BRPI1009169B1 - PROTECTIVE COVERAGE AND SYSTEM FOR REMOVABLY FIXING A PROTECTIVE COVERAGE TO A TABLET COMPUTER - Google Patents

Abstract

accessory device with magnetic union. a magnetic joining mechanism and method are described. the magnetic joining mechanism can be used to remotely join at least two objects in a preferred configuration without fasteners and without external intervention. the magnetic coupling mechanism can be used to remotely connect an accessory device to an electronic device. the accessory device can be used to extend the utility functionality of the electronic device.

Description

[0001] Divided from PI 1004908-8 deposited on December 20, 2010.

Field of the Modalities Described

[0002] The modalities described refer, in general, to portable electronic devices. More particularly, the present embodiments describe various removable joining techniques well suited for portable electronic devices.

Description of the related technique

[0003] Recent advances in portable computing include the introduction of handheld electronic devices and computing platforms along the lines of the iPad ™ tablet manufactured by Apple Inc. of Cupertino, CA. These handheld computing devices can be configured such that a substantial portion of the electronic device takes the form of a display used to present visual content with little space available for a joining mechanism that can be used to attach an accessory device.

[0004] Conventional joining techniques generally rely on mechanical fasteners that typically require at least one externally accessible joining feature on the electronic device to fit with a corresponding joining feature on the accessory device. The presence of the external bonding feature can detract from the overall look and feel of the handheld computing device as well as add unwanted weight and complexity, as well as degrade the appearance of the handheld computing device.

[0005] Therefore, a mechanism for remotely joining at least two objects is desired.

SUMMARY OF THE MODALITIES DESCRIBED

[0006] This document describes several modalities that refer to a system, method and apparatus for remotely joining an accessory to an electronic device.

[0007] An accessory unit includes at least one accessory body and a magnetic assembly hingedly connected to the accessory body. The magnetic assembly includes at least a first plurality of magnetic elements arranged adjacent to each other in a first order of relative size along a first line and arranged according to a first polarity pattern of alternating magnetic polarities, and a second plurality of elements magnets arranged adjacent to each other in a second order of relative size along the first line and according to a second polarity pattern of alternating magnetic polarities.

[0008] A magnetic joining method suitable for use with an accessory unit can be performed by providing a magnetic assembly where the magnetic assembly includes at least a first plurality of magnetic elements arranged adjacent to each other in a first order of relative size over a first line and arranged according to a first polarity pattern of alternating magnetic polarities and a second plurality of magnetic elements arranged adjacent to each other in a second order of relative size along the first line and according to a second polarity pattern of polarities alternating magnetic strips, in which the first and the second pluralities of magnetic elements cooperate to form a first magnetic sequence. In the described mode, the method can be carried out by placing the magnetic assembly in sequence in proximity to a host unit, causing the creation of a first magnetic surface by the host unit, the first magnetic surface being suitable for the magnetic union and magnetically joining the accessory unit and the host unit on an engaging surface corresponding to the magnetic surface.

[0009] An accessory unit in another embodiment includes at least one accessory body having a first magnetic element and a second magnetic element hingedly connected to the accessory body, wherein the second magnetic element magnetically links the accessory unit hingedly to a first portion of a unit host and where the first magnetic element cooperates with the second magnetic element to magnetically attach the accessory body to a second portion of the host unit, where the first and second magnetic elements are independent of each other.

[00010] Other aspects and advantages of the invention will be evident from the following detailed description taken in conjunction with the accompanying drawings that illustrate, by way of example, the principles of the described modalities.

BRIEF DESCRIPTION OF THE DRAWINGS

[00011] The invention will be easily understood by the following detailed description together with the accompanying drawings, in which similar reference numerals indicate similar structural elements and in which:

[00012] Figure 1 is a simplified block diagram of an article and an electronic device that can be remotely joined together in a desired and repeatable manner.

[00013] Figure 2A is a simplified perspective view of an article that can be remotely joined in an electronic device through a lateral magnetic union system, according to a described modality.

[00014] Figure 2B shows the article and the electronic device of figure 2A joined according to the lateral magnetic union system.

[00015] Figure 3A is a simplified perspective view of an article that can be remotely joined in an electronic device through a superior magnetic union system according to a described modality.

[00016] Figure 3B shows the article and the electronic device of figure 3A magnetically joined together to form a cooperating system using the upper magnetic union system.

[00017] Figure 4A is a simplified perspective view of an article that can be remotely joined in an electronic device through the upper and side magnetic joining systems.

[00018] Figure 4B shows a cooperative system of the attached article and electronic device shown in figure 4A in a closed configuration.

[00019] Figure 4C shows the cooperating system of figure 4B in an open configuration.

[00020] Figure 5 shows a top perspective view of an electronic device according to the described modalities.

[00021] Figure 6 shows another modality of a magnetic union feature.

[00022] Figure 7A shows an electronic device in proximity to another object in the form of an accessory device having a magnetic joining feature.

[00023] Figure 7B shows a graphical representation of the magnetic interaction between the electronic device and the accessory device of figure 7A according to the described modalities.

[00024] Figure 7C shows a graphical representation of a cooperating system formed by the magnetic union of the accessory device and the electronic device as shown in figures 7A and 7B.

[00025] Figure 8A shows a modality of a joining feature in an electronic device.

[00026] Figure 8B shows a modality of a joining feature in an accessory device corresponding to the joining feature shown in figure 8A.

[00027] Figure 9A shows a feature of joining the representative device in an inactive state.

[00028] Figure 9B shows the bonding feature of the device representative of figure 9A activated by another magnetic bonding feature.

[00029] Figure 9C shows the magnetic union feature in the inactive state in the presence of the magnetically active object.

[00030] Figure 10 shows an implementation of a device joining feature that uses a leaf spring arrangement as a retention mechanism.

[00031] Figure 11A shows a modality of a magnetic union system switched in an inactive state and an associated magnetic union system.

[00032] Figure 11B shows the switched magnetic union feature of figure 11A activated by the associated magnetic union system.

[00033] Figure 12 shows a change position for the keyed magnetic union feature shown in figure 11A.

[00034] Figure 13 shows a graph summarizing the magnetic joining force against the relative position of the switched magnetic joining feature.

[00035] Figures 14 and 15 show various modalities of the magnetic elements used in the switched magnetic union feature.

[00036] Figure 16A shows a first perspective view of the electronic device in the form of a tablet device and the accessory device in the form of a protective cover.

[00037] Figure 16B shows a second perspective view of the electronic device in the form of a tablet device and the accessory device in the form of a protective cover.

[00038] Figure 17A shows a closed configuration of the cooperating system formed by the tablet device and protective cover shown in figures 16A and 16B.

[00039] Figure 17B shows an open configuration of the cooperating system shown in figure 17A.

[00040] Figure 18 shows a top view of a segmented coverage set modality.

[00041] Figures 19A - 19C show a detailed view of an extension of the hinge according to the described modalities.

[00042] Figure 20A shows a side view of the segmented cover set shown in figure 18 joined on a tablet device.

[00043] Figures 20B - 20C show section views of the segmented cover assembly and tablet device of figure 20A.

[00044] Figure 21A shows a side sectional view of an embodiment of the hinge extension of figures 19A - 19C magnetically joined in a housing having a curved surface.

[00045] Figure 21B shows a side sectional view of another embodiment of the hinge extension magnetically joined in a housing having a flat surface.

[00046] Figures 22A and 22B show sectional and perspective views of an artifact used to assemble the hinge extension according to the described modalities.

[00047] Figure 23 shows a side view of a segmented cover configured to support a tablet device in a keyboard state.

[00048] Figures 24A and 24B show side and perspective views, respectively, of the segmented coverage configured to support a tablet device in a display state.

[00049] Figures 25A - 25B show the segmented coverage set configured as various modes of a suspended device.

[00050] Figures 26A and 26B show rear and front views, respectively, of a tablet device having a front and rear image capture device maintained by the holder.

[00051] Figures 27A - 27C show a cooperative system of a segmented coverage and tablet device configured to activate only uncovered portions of a display in a peeking mode.

[00052] Figures 28A - 28D show several exploded views of portions of a pivot hinge assembly according to the described modalities.

[00053] Figure 29 shows an exploded view of an upper cover set according to the described modalities.

[00054] Figure 30 is a sectional view of the top cover set shown in figure 29 in place on a tablet device showing the relationship between a magnet embedded in the top cover set and a magnetically sensitive circuit on the tablet device.

[00055] Figure 31A shows a sectional view of an extension of the magnetically engaged hinge with a feature of joining the corresponding device in an active state according to the described modalities.

[00056] Figure 31B shows a sectional view of the attachment feature of the device of Figure 31A in an inactive state.

[00057] Figures 32 - 33 show perspective views of a device joining feature incorporating a leaf spring as a retention mechanism according to the described modalities.

[00058] Figure 34 shows a flow chart detailing a magnetic union process according to the described modalities.

[00059] Figure 35 shows a flow chart detailing a process to activate a magnetic union feature coded according to the described modalities.

[00060] Figure 36 shows a flowchart detailing a process for formation starting a magnetic union according to the described modalities.

[00061] Figure 37 shows a flow chart detailing a process for a peeking operation according to the described modalities.

[00062] Figure 38 shows a flow chart detailing a process for assembling a hinge extension according to the described modalities.

[00063] Figure 39 shows a flow chart detailing the process to determine a configuration of the magnetic elements in a magnetic cell used in a magnetic union system according to the described modalities.

[00064] Figure 40 is a block diagram of an array of functional modules used by a portable media device.

[00065] Figure 41 is a block diagram of an electronic device suitable for use with the described modalities.

DETAILED DESCRIPTION OF THE SELECTED MODALITIES

[00066] Reference will now be made in detail to the representative modalities illustrated in the accompanying drawings. It should be understood that the following descriptions are not intended to limit the modalities to a preferred modality. On the contrary, it is designed to cover alternatives, modifications and equivalents as they may be included within the spirit and scope of the modalities described as defined by the embodiments.

[00067] The following description generally refers to a mechanism that can be used to join at least two properly configured objects. In one embodiment, this can be accomplished without using conventional fasteners. Each of the objects can include a bonding feature arranged to provide a magnetic field having appropriate properties. When the bonding features are placed in close proximity to each other, the magnetic fields can interact cooperatively based on their respective properties, resulting in the objects magnetically joining in a desired and repeatable manner. For example, due at least in part to the cooperative nature of the interaction of magnetic fields, objects can come together in a predetermined position and relative orientation without external intervention. For example, cooperative magnetic interaction can result in objects aligning and self-centering in a desired orientation.

[00068] Objects can remain in a magnetically bonded state if and until a release force of sufficient magnitude is applied that exceeds the general net attractive magnetic force. In some cases, however, it may be desirable to separate the objects serially (along the lines of a zipper) in which case the release force only needs to be of sufficient magnitude to overcome the net magnetic attractive force of a pair of magnetic elements of one time. Connectors, such as mechanical fasteners, are not necessary to join objects together. In addition, to prevent undue interference with the magnetic interaction between the magnetic bonding resources, at least a portion of the objects in the vicinity of the magnetic bonding resources may be formed from magnetically inactive materials, such as plastics or non-ferrous metals, such as aluminum or non-magnetic stainless steel.

[00069] Objects can take many forms and perform many functions. When magnetically joined together, objects can communicate and interact to form a cooperative system. The cooperative system can perform operations and provide functions that cannot be provided by the separate objects individually. In another embodiment, at least one device can be used as an accessory device. The accessory device can be magnetically attached to at least one electronic device. The accessory device can provide services and functions that can be used to increase the operability of the electronic device (s). For example, the accessory device may take the form of a protective cover that can be attached magnetically to the electronic device. The protective cover can provide protection for certain aspects (such as a display) of the electronic device while improving the overall appearance and impression of the electronic device. The magnetic coupling mechanism used to magnetically attach the accessory and the electronic device can ensure that the cover can only bond on the electronic device in a specific orientation. In addition, the magnetic coupling mechanism can also ensure proper alignment and positioning of the protective cover and the electronic device.

[00070] The protective cover may include at least one hinge portion. The hinge portion can be magnetically joined to the electronic device using a magnetic joining feature. The hinge portion can be pivotally connected to a tab that can be placed over a portion of the electronic device to be protected. The protective cover can include electronic circuits or other elements (passive or active) that can cooperate with the electronic elements in the electronic device. As part of this cooperation, signals can be passed between the protective cover and the electronic device that can be used, for example, to modify the operations of the electronic device, operations of the electronic circuits or elements of the protective cover and so on.

[00071] As an example, the electronic device can include a magnetically sensitive circuit, such as a Hall Effect sensor and as such it can detect the presence of a magnetic field. The Hall Effect sensor can respond to the presence (or absence) of the magnetic field by generating a signal. The signal can be used to change the operating state of the electronic device. Thus, the protective cover may include a magnetic element, such as a permanent magnet, having a magnetic field that can cause the Hall Effect sensor to generate the signal. The magnetic element can be positioned on the protective cover at a location that triggers the Hall Effect sensor to generate the signal when the cover is placed on or in proximity to a surface of the electronic device. The signal may indicate that the protective cover is in a predetermined position in relation to the electronic device which may result in a change in the operating state of the electronic device. For example, with the protective cover portion having the magnetic element in close proximity to the Hall Effect sensor, the magnetic field of the magnetic element can cause the Hall Effect sensor to generate a signal. The signal can be used, in turn, to change the operating state to one consistent with the display of the electronic device being completely covered. On the other hand, when the portion of the protective cover having the magnetic element is removed to the point where the Hall Effect sensor no longer responds to the magnetic field of the magnetic element, then the Hall Effect sensor can generate another signal. The other signal can result in the electronic device entering a different operating state consistent with at least a portion of the display being uncovered and visible.

[00072] These and other modalities are discussed below with reference to figures 1 - 40. However, those skilled in the art will easily find that the detailed description provided here with respect to these figures is for explanatory purposes only and should not be construed as limiting. For the remainder of this discussion, a first and a second object, each properly configured to magnetically join according to the described modalities will be described. It should be noted, however, that any number and type of properly configured objects can be magnetically joined together in a precise and repeatable manner. In particular, for simplicity and clarity, for the remainder of this discussion, it is assumed that the first object takes the form of an electronic device and in particular a handheld electronic device.

[00073] Figure 1 is a simplified block diagram of article 10 and electronic device 12 that can be remotely joined in a desired and repeatable manner. More specifically, article 10 and electronic device 12 can come together in a predetermined position and relative orientation without external intervention and without the use of mechanical fasteners. The article 10 and the electronic device 12 can remain joined if and until a release force is applied that exceeds the engagement between them. In some cases, however, it may be desirable to separate the article 10 and the electronic device 12 serially (along the lines of a zipper) in which case, a release force can be applied that can undo the engagement between the article 10 and the electronic device 12 around a joining component at once. For example, a joining component may include a suitably associated pair of magnetic elements, one in article 10 and a second in electronic device 12.

[00074] Electronic device 12 can take many forms. For example, electronic device 12 may take the form of a portable electronic device. In some examples, the portable electronic device may include housing 15. Housing 15 may enclose and provide support for the components of the portable electronic device. The housing 15 can also provide support for at least one large and prominent display which occupies a substantial portion of the front face of the portable electronic device. The display can be used to display visual content. Visual content can include static images, visuals, text data, as well as graphic data that can include icons used as part of a graphical user interface, or GUI.

[00075] In some cases, at least a portion of the display may be touch sensitive. By touch-sensitive it is planned that during a touch event, an object (such as a finger, pen and so on) can be placed in contact with or in proximity to an upper surface of the dial. The particulars of the touch event (location, pressure, duration and so on) can be used to provide information for the portable electronic device for processing. In some embodiments, in addition to or in place of the information being provided for the portable electronic device, the information can be provided by the portable electronic device in a tactile manner using, for example, haptic actuators. It should be noted, however, that this configuration is by way of example and not by way of limitation since the electronic device can be widely varied. In one example, the portable electronic device is a tablet computer such as, for example, the iPad ™ manufactured by Apple Inc. of Cupertino, CA.

[00076] Article 10 can be widely varied and can take many forms such as, for example, an accessory or electronic device equipment 12. As an accessory, Article 10 can be configured as a cover, a platform, a dock, a hanger, an input / output device, and so on. In a particularly useful form, article 10 may take the form of a protective cover which may include an element, such as a tab, which may be positioned over the display of the portable electronic device. Like the electronic device 12, the article 10 can also include the housing 17 which can wrap and provide support for the components of the article 10.

[00077] Either or both, article 10 and electronic device 12 may include bonding features. For example, article 10 can include joining system 13 and electronic device 12 can include corresponding matching system 14. Connection system 13 can cooperate with corresponding joining system 14 to join article 10 and the electronic device 12 in a redeemable way. When joined together, the article 10 and the electronic device 12 can operate as a single operation unit. On the other hand, in separate mode, the article 10 and the electronic device 12 can act separately, and if desired, as two individual parts. The joint systems 13 and 14 can be configured in such a way that the article 10 and the electronic device 12 can be joined in a desired and repeatable manner. In other words, the joint systems 13 and 14 can repeatedly align the article 10 and the electronic device 12 together, such that they are consistently in a predetermined position with respect to each other.

[00078] The bonding resources can be widely varied. The coupling can be provided by several types of couplings including mechanical, electrical, static, magnetic, friction and / or similar. In one embodiment, the union cannot be seen from the outside of the article and / or the electronic device. For example, the article and the device may not include external visible bonding features that adversely affect the appearance and impression or ornamental appearance (eg, spring fasteners, latch, etc.), but preferably bonding features that cannot be seen from the outside of the article or device and thus do not affect the appearance and impression or ornamental appearance of the article or device. For example, the bonding features can be provided by attraction surfaces that do not disturb the external surfaces of the article or device. In one embodiment, at least a portion of the bonding features uses magnetic attraction to provide some or all of the bonding strength.

[00079] Bonding systems can include one or more bonding features. If multiple resources are used, the way in which they are established may be the same or different. For example, in an implementation, a first bond feature uses a first bond while a second bond feature uses a second bond that is different from the first bond. For example, the first coupling means can use a friction coupling while the second coupling means can use magnetism. In another implementation, a first bonding feature uses a first bonding means while a second bonding feature uses the same or similar bonding means. For example, the first and the second joining means can be provided by magnets. Although the means of joining may be similar, it should be noted that the configuration of the resources may differ depending on the needs of the system. In addition, any number and configuration of bonding means can be used.

[00080] In the illustrated embodiment, the joint systems 13 and 14 each include at least a first set of corresponding joint resources 13a / 14a and a second set of corresponding joint resources 13b / 14b. The bonding feature 13a can cooperate with the corresponding bonding feature 14a to bond the article 10 and the electronic device in a redeemable manner. In a particular implementation, this is accomplished with magnetic attraction. In addition, the bonding feature 13b may cooperate with the corresponding bonding feature 14b to further bond the article 10 and the electronic device in a redeemable manner. In a particular implementation, this is accomplished with magnetic attraction. For example, the bonding features 13a / 14a can be provided in a first location while the bonding features 13b / 14b can be provided in a second location.

[00081] In a specific example, the bonding feature 14a may, in cooperation with the bonding feature 13a, the electronic device 12 in article 10. In another example, the bonding feature 13b can secure the article 10 of the electronic device 12 using the bonding feature 14b. It should be noted that the joint systems 13 and 14 in this example can be separated or they can cooperate to produce the joint. If they cooperate, the bonding resources 14a and 14b correspond with or fit with one or more bonding resources 13a and 13b. In any case, the bonding features in any of these examples can be accomplished through mechanics, static, suction, magnetic bonding and / or the like.

[00082] The placement of bonding systems and bonding resources within bonding systems can vary widely. With respect to the electronic device 12, the joining system 14 can be placed in the front, back, top, bottom and / or sides. The coupling resources 14a and 14b can be placed at any location within the coupling system 14. Thus, the coupling resources 14a and 14b can be placed anywhere in relation to the housing and / or the display. In one example, the coupling features 14a and 14b can provide the engagement along one or more sides of the housing (for example, top, bottom, left, right). In another example, the coupling features 14a and 14b can provide the coupling at the rear of the electronic device 12. In yet another example, the coupling features 14a and 14b can provide the coupling at the front (for example, where, if present, a dial is located) of the electronic device 12. In some cases, a combination of bonding features may be located in different regions of the electronic device 12, for example, on the sides and front. In one embodiment, the joint system 14 including the joint resources 14a and 14b does not disturb the surfaces of the electronic device 12. Similarly, the joint system 13 and in particular the joint resources 13a and 13b do not disturb the surfaces of the article 10. .

[00083] According to a modality, the bonding features may include magnetic elements. The magnetic elements can be configured to assist in positioning the article 10 in relation to the electronic device 12 in a corresponding arrangement. The magnetic elements can also help to secure the article 10 and the electronic device 12 in a corresponding latch. It should be noted that the engagement of the article 10 and the electronic device 12 can be reversed by applying an appropriate release force that allows the article 10 and the electronic device 12 to separate back into individual objects. However, the magnetic elements may allow the article 10 and the electronic device 12 to subsequently return the corresponding coupling without the requirement for fasteners of any kind, mechanical or otherwise. In this way, the magnetic elements provide a repeatable and consistent engagement between the article 10 and the electronic device 12.

[00084] Article 10 and electronic device 12 may also include components 16 and 18, respectively. Components 16 and 18 typically depend on the configuration of article 10 and electronic device 12 and can be, for example, mechanical or structural components used to provide support or they can be operational / functional components that can provide a specific set of operations / functions . The components can be dedicated to their respective devices or they can be configured to mate with aspects of the corresponding item or device (for example, wired or wirelessly). Examples of structural components may include frames, walls, fasteners, hardeners, movement mechanisms (hinge), etc. Examples of operational components may include processors, memory, batteries, antennas, circuitry, sensors, displays, inputs, and so on. Depending on your desired configuration, the components can be external (that is, exposed on the surface) and / or internal (for example, embedded in the housing).

[00085] Figures 2A and 2B are seen in simplified perspective of article 20 which can be remotely joined in the electronic device 22 by means of a magnetic union system, according to a described mode. Article 20 and electronic device 22 can generally correspond with those discussed with respect to figure 1. In one embodiment, the magnetic union system can be personified as a magnetic surface 24 (shown by dashed or shaded lines) and more particularly as a magnetic surface 24 on the sides of the electronic device 22. The magnetic surface 24 can provide a magnetic field that can cooperate with a corresponding bonding feature in article 20 when placed in proximity to each other. The magnetic field can establish a net magnetic attractive force that can pull the article 20 and the electronic device 22 together to the corresponding engagement along the engagement surface 26, as shown in figure 2B.

[00086] In other words, the magnetic field provided by the magnetic surface 24 may have properties such that the net magnetic attractive force between the article 20 and the electronic device 22 is substantially perpendicular to the engaging surface 26. Furthermore, the magnetic field can result in the net magnetic attractive force between the article 20 and the electronic device 22 being applied uniformly across the engaging surface 26. In order to release the article 20 and the electronic device 22, a release force can be applied to the two objects joined in order to overcome the net magnetic attractive force provided by the magnetic union system.

[00087] It should also be verified that although only one side wall is shown, in some cases, different side walls and possibly a combination of side walls can be used depending on the needs of the joining interface. It should be noted that the use of magnetic joints excludes the need for mechanical joints, such as fasteners. Furthermore, the lack of mechanical joints and the uniformity of the overall magnetic attractive force can leave the surfaces of the article 20 and the electronic device 22 unchanged helping to create an appearance of unity by which the article 20 and the electronic device 22 may appear as a single, unified entity. Uniformity in appearance can improve the overall aesthetic appeal of both Article 20 and the electronic device 22.

[00088] In one embodiment, a magnetic surface can be created by embedding magnetically attractive elements in the form of the magnetic union feature within the side walls of the electronic device 22 and / or article 20. That is, the magnetically attractive elements can be arranged within the article 20 and electronic device 22 such as, for example, inside the housing of the electronic device 22. In this configuration, the housing can be formed of non-magnetic material such as plastic or non-ferrous metal such as aluminum. In this way, the lines of the magnetic force can be configured to work through the housing walls. The magnetic bonding features do not disturb the physical appearance of the external surfaces of article 20 and electronic device 22. The magnetically attractive elements in article 20 and electronic device 22 can be arranged to produce magnetic fields that can cooperate with each other to generate a magnetic attractive force which joins article 20 and electronic device 22 together in the corresponding coupling. The magnetic attractive force being configured to generate a normal magnetic attraction force at the engaging surface 26 between the electronic device 22 and the article 20.

[00089] The magnetic attractive force between corresponding magnetic elements in article 20 and the electronic device 22 can also be applied uniformly across the engaging surface 26. The uniformity of the general magnetic attractive force across the engaging surface 26 can be a result the uniformity of the separation distance between corresponding magnetic elements in article 20 and electronic device 22. Uniformity can also be a result of the consistency of the density of the magnetic flux between corresponding magnetic elements in article 20 and electronic device 22. The uniformity of the liquid magnetic union it can be facilitated by the surfaces of article 20 and electronic device 22, each forming a well-matched fit. For example, one surface can be flat or have a concave geometry while the other surface can have a convex geometry as associated. In this way, by firm adjustment, the separation distance between each of the corresponding magnetic elements in article 20 and electronic device 22 can be reduced to a minimum. The conformity of the surface shapes can also improve the overall appearance and impression of the article 20 and the electronic device 22 by reducing or eliminating the appearance of a joint on the coupling surface 26. This seamless quality can provide an illusion of a single entity when the article 20 and electronic device 22 are joined.

[00090] In addition to improving the overall appearance and impression, the consistency of the separation distance between the magnetic elements can make the bonding force between the article 20 and the electronic device 22 uniform across the engagement surface 26. In this way, the latching force can be evenly distributed across the latching surface 26 preventing warping, weaknesses and so on that could otherwise affect the overall integrity of the latch between the article 20 and the electronic device 22.

[00091] Figures 3A and 3B are seen in simplified perspective of article 30 which can be remotely joined in an electronic device 32 through the magnetic union system 34 and corresponding union system 36. It should be noted that this particular modality is similar to the modality described in figures 2A, 2B, except that the magnetic surfaces that were previously located on the side walls are now located on one side of the electronic device 32 and, optionally, an opposite face in article 30. For example, in the case of a electronic device including a display, the magnetic elements of the magnetic union system 34 can be embedded behind the surface of the display.

[00092] Figure 3B shows article 30 and electronic device 32 magnetically joined together to form cooperating system 38. As part of system 38, electronic device 32 and article 30 can cooperate with each other to provide resources not available by article 30 or electronic device 32 separately. For example, Article 30 can take the form of a cover that can provide protective features. In one embodiment, the protective cover can be used to support and protect the electronic device 32 while being transported or stored (for example, covering the display surface). Due to the removable nature of the magnetic coupling between the magnetic coupling systems 34 and 36, the article 30 can be easily separated when the electronic device 32 is to be used and subsequently rejoined when desired.

[00093] The placement of the magnetic elements can be such that only certain magnetically sensitive elements within the electronic device 32 are affected by the magnetic field generated by the embedded magnetic elements. For example, a Hall Effect sensor can be used to detect whether or not article 30 is magnetically attached to and covering all or a portion of the display of electronic device 32 using the magnetic field generated by a magnetic element located in article 30. On the other hand On the other hand, a magnetically sensitive element in the electronic device 32, such as a compass that has an external magnetic field (i.e., such as the one provided by the earth), need not be unduly affected by the lines of the magnetic field generated by the embedded magnetic elements. Therefore, the magnetic elements can be limited to those locations on the electronic device 32 positioned away from the magnetically sensitive elements such as the compass.

[00094] Figures 4A and 4C are seen in simplified perspective of article 40 which can be remeasurably joined in electronic device 42 via a magnetic system 44. This modality is similar to that shown in figures 2A, 2B and 3A, 3B in that the magnetic system 44 can include multiple magnetically attractive elements and that the article 40 and the electronic device 42 generally correspond with those mentioned in the previous figures. For example, a set of magnetically attractive magnetic elements 44a can be placed in relation to one side of the article 40 and electronic device 42 while a second set of magnetically attractive elements 44b can be placed in relation to a face of the article 40 and electronic device 42 As shown in figure 4B, the cooperating system 46 can be formed by placing the article 40 and electronic device 42 in close proximity to each other such that the magnetic elements 44a on the sides of the article 40 and electronic device 42 attract magnetically beyond the elements magnets 44b located on the face of the electronic device 42 and article 40. The general magnetic attraction generated on the side and face may be sufficient to retain the article 40 and the electronic device 42 in a corresponding engagement to form the cooperating system 46.

[00095] In one embodiment, as shown in figure 4C, the cooperating system 46 is presented in an open configuration in which the article 40 is used as a cover for the electronic device 42 that can be opened and closed. That is, article 40 can act as a protective cover for electronic device 42. In this embodiment, article 40 can include gasket 48 which joins along the side of electronic device 42 and flap 50 which joins on the front face of the device electronic 42 and more particularly, on the upper face 52. The upper face 52 can correspond with a dial. In an implementation, the flap 50 can move in relation to the joint 48. The movement can be varied widely. In one example, the flap 50 can pivot in relation to the joint 48. The pivot can be varied widely. In one example, the pivot can be enabled by a hinge mechanism. In another example, the pivot can be enabled by a fold. In addition, the flap can be rigid, semi-rigid or flexible. In this way, article 40 can form an open configuration where the flap 50 is positioned away from the electronic device 42 (the display 52 can be seen) and a closed configuration where the flap 50 is positioned adjacent to the electronic device 42 (the display 52 is covered as represented by the closed modality of figure 4B).

[00096] In one embodiment, the joint 48 is only located on one side while the flap 50 is only located on the upper face 52. In doing so, the other surfaces of the electronic device 42 are left exposed. As a result, the beauty of the electronic device can stand out while the article is joined on the electronic device. In addition, this can provide better access for I / O and connectivity-related functionality (for example, buttons, connectors, etc.).

[00097] Although the purpose of the magnetic elements is similar, that is, to attach the article to the electronic device, it must be verified that these mechanisms can vary widely. In some cases, magnetic fields can be configured differently. For example, the side-mounted magnetic surface can provide a first magnetic force and the forward-facing magnetic surface can provide a second magnetic force that is different from the first magnetic force. This may be partly due to different fastening requirements, as well as different surface areas, that is, available space, and their effect on the internal components of the electronic device. In one example, the magnetic surface mounted on the side provides a greater clamping force to secure the article to the electronic device, that is, it is the primary clamping force while the forward facing magnetic surface is the secondary clamping force.

[00098] In one example, the flap 50 includes multiple sections that are semi-rigid and curved in relation to each other in order to make the flap movable and flexible. In one embodiment, the flap 50 can be folded into one or more different configurations and in some cases it can be maintained in these configurations using a magnetic system similar to that described above. These and other modalities will be described in more detail below. Furthermore, it should be verified that the described modalities are not limited to covers and that other configurations can be used including, for example, as an accessory device used as a suspension device, as a support mechanism for the electronic device to improve the display visualization and as a support mechanism for inserting touch events into a touch sensitive portion of the display, and so on.

[00099] The electronic device and the article can take many forms. For the remainder of this discussion, the electronic device is described in terms of a portable handheld computing device. Thus, figure 5 shows a top perspective view of the electronic device 100 according to the described modalities. The electronic device 100 can process data and more particularly media data, such as audio, visuals, images, etc. For example, the electronic device 100 can generally correspond with a device that can function as a smart phone, a music player, a game player, a visual player, a personal digital assistant (PDA), a tablet computer and similar. Electronic device 100 may also be hand held. With respect to being hand held, the electronic device 100 can be held in one hand while being operated by the other hand (i.e., without a reference surface such as a precise table). Therefore, electronic device 100 can be held in one hand while operational input commands can be provided by the other hand. Operational input commands may include operating a volume key, a holding key, or entering a touch-sensitive surface such as a touch-sensitive display device or a touch-sensitive base.

[000100] Electronic device 100 may include housing 102. In some embodiments, housing 102 may take the form of a one-piece housing formed from any number of materials such as plastic or non-magnetic metal that can be forged, molded or otherwise transformed into a desired shape. In those cases where the electronic device 100 has a metal housing and incorporates radio frequency (RF) based functionality, a portion of the housing 102 may include materials transparent to the radio, such as ceramic or plastic. Housing 102 can be configured to include various internal components. For example, housing 102 can include and support various structural and electrical components (including integrated circuit chips) to provide computing operations for electronic device 100. Integrated circuits can take the form of chips, chip sets or modules, any one of which can be mounted on the surface of a printed circuit board, or PCB, or other support structure. For example, a main logic board (MLB) can have integrated circuits mounted on it that can include at least one microprocessor, semiconductor memory (such as FLASH) and several support circuits and so on. Housing 102 may include opening 104 for placing internal components and, when necessary, can be sized to accommodate the display assembly to display visual content, the display assembly being covered and protected by protective layer 106. In some cases, the housing assembly The display can be touch sensitive allowing tactile inputs that can be used to provide control signals for the electronic device 100. In some cases, the display assembly can be a large, prominent display area that covers most of the real estate in the front of the electronic device.

[000101] Electronic device 100 may include a magnetic joining system that can be used to magnetically attach electronic device 100 to at least one other properly configured object. The magnetic union system may include several magnetic union features distributed within and in some cases connected in housing 102. For example, the magnetic union system may include first magnetic union feature 108 and second magnetic union feature 110 located on different sides of the electronic device 100. In particular, the first magnetic coupling feature 108 can be located in proximity to the side wall 102a of the housing 102. The second magnetic coupling feature 110 can be located inside the opening 104 near the side wall 102b of the housing 102. In such embodiments where electronic device 100 includes a cover glass display substantially filling aperture 104, the second coupling feature 110 can be placed below the cover glass.

[000102] The placement of the first magnetic union feature 108 on the side wall 102a can facilitate the use of the magnetic union feature 108 to magnetically join the electronic device 100 to another suitably configured object such as another electronic device or an accessory device. Thus, without loss of generality, the first magnetic union feature 108 will be referred to hereinafter as the device 108 joint feature.

[000103] The placement of the second magnetic union feature 110, on the other hand, can facilitate the use of the second magnetic union feature 110 to secure aspects of another device joined to the electronic device 100 through the union feature of device 108. This In this way, the general connection between the other device and the electronic device 100 can be firmer than the connection via the first connection feature 108 only. Thus, and again without loss of generality, the second resource of union 110 will be referred to hereinafter as a resource of firm union.

[000104] Although not expressly shown, it is understood that the various magnetic joining features of the magnetic joining system can be located at any appropriate location in the housing 102. For example, magnetic joining features can be located on an inner lower surface of the housing 102 or along sides 102c and 102d of housing 102.

[000105] As shown in figure 6, the bonding feature of device 108 and the bonding feature 110 can each include one or more magnetic elements. In one example, the bonding feature of device 108 can multiply magnetic elements that can magnetically interact with each other to provide magnetic field 112 (only a portion of which is shown). In other words, the properties (shape, field strength and so on) of the magnetic field 112 can be based on the interaction of the magnetic fields generated by each of the magnetic elements. In this way, the properties of magnetic field 112 can be altered simply by organizing the properties (i.e., physical layout, relative size and constituent magnetic polarities) of each of the magnetic elements. For example, each of the magnetic elements can be of varying sizes and can be arranged along a geometric axis. In this way, the magnetic properties of each of the plurality of magnetic elements can act together to establish the general properties of the magnetic field 112.

[000106] In some cases, the portion of magnetic field 112 that is used in the magnetic union between the bonding feature of device 108 and another device can be increased with the use of a magnetic lead (not shown). The magnetic tap may be formed of magnetically active material, such as steel or iron, and be placed in a position that causes lines in the magnetic field that would otherwise be directed away from the joining region to at least partially redirect to the union region. The redirection of the lines in the magnetic field can have the effect of increasing the average density of the magnetic flux in the joining region.

[000107] The bonding feature of device 108 can operate in an active state as well as in an inactive state. The density of the magnetic flux B112 can equal or exceed the threshold of the density of the magnetic flux Blimiar inside the outer surface of the housing 102, but not in the inactive state. In other words, the density of the magnetic flux B112 of the magnetic field 112 on an outer surface of the housing 102 is less than the threshold of the density of the magnetic flux Blimiar. The Blimiar magnetic flux density threshold representing a magnetic flux value below which magnetically sensitive devices (such as a magnetic stripe on a credit card) can remain substantially unchanged. In addition, the presence of a magnetically active material (such as steel) in the region outside the electronic device 100 will not, by itself, trigger the bonding feature of device 108 to transition from the inactive state to the active state.

[000108] As mentioned above, when the bonding feature of device 108 is inactive, the magnetic flux density B112 of magnetic field 112 on the outer surface of side 102a of housing 102 is less than the threshold of magnetic flux density Blimiar. More particularly, with respect to the joining feature of device 108, the density of the magnetic flux B112 can vary as a function of the distance x (i.e., B = B112 (x)) from the magnetic elements. Therefore, when the bonding feature of device 112 is inactive, the magnetic flux density B112 (x) can satisfy equation (1). B112 (x = x0 + t) <Blimiar, Equation (1) where t is the thickness of housing 102 on side 102a and x0 is the distance from the inside of side 102a to the magnetic elements.

[000109] When the bonding feature of device 108 is inactive, any leakage of the magnetic flux in the nearby region outside electronic device 100 (ie, B112 (x> x0 + t)) is low enough that there is little likelihood that devices magnetically sensitive in the near region are adversely affected. However, it should be noted that even in the inactive state, magnetic field 112 can have a flux value of magnet B112 (x = x0 + t) that satisfies equation (1) and still be high enough to interact with the magnetic field of another device placed in relatively close proximity to it. In this way, the other magnetic union feature appropriately configured in the other device can be used to activate the magnetic union feature of device 108 even though equation (1) is satisfied.

[000110] The properties of magnetic field 112 may include at least field strength, magnetic polarity and so on. The properties of the magnetic field 112 can be based on the combination of the magnetic fields of each of the magnetic elements included in the magnetic union feature 108. The combined magnetic fields can form in the aggregate magnetic field 112. For example, the magnetic elements can be arranged in such a way that the combination of the respective magnetic fields results in magnetic field 112 having desirable magnetic field properties (such as field strength). For example, the combination of an array of magnetic elements can result in magnetic field 112 having characteristics (such as polarity and intensity) that are, in most cases, symmetrical around a particular geometric axis (such as a geometric centerline) .

[000111] On the other hand, the magnetic elements can be arranged in such a way that the combination of the magnetic fields of the magnetic elements can result in the magnetic field 112 having at least one property that is antisymmetric around the center line. For example, a magnetic element on one side of the center line can be positioned with a north magnetic pole pointing upwards while a corresponding magnetic element on the other side of the center line can be arranged with the south magnetic pole pointing upwards. Therefore, the magnetic properties of the magnetic field 112 can be adjusted in any manner deemed appropriate to provide a desired corresponding engagement. For example, the magnetic properties of the magnetic field 112 can be modified by arranging the magnetic elements in such a way that the magnetic field 112 can interact cooperatively with another magnetic field (from another magnetic union system, for example). The cooperative interaction between the two magnetic fields can result in the two objects being magnetically joined together in a well-defined, precise and repeatable manner.

[000112] The properties of the 112 magnetic field can be stable. As stable, it is planned that the properties of the magnetic field can remain essentially unchanged for an extended period of time. Therefore, a stable version of magnetic field 112 can be created using magnetic elements having properties that are essentially constant (or almost constant) over an extended period of time or at least any changes in one component are compensated for by a corresponding change in another component. . The magnetic elements can be physically arranged in a fixed configuration or at least substantially fixed with respect to the other magnetic elements. For example, each of the magnetic elements can have fixed sizes and polarities arranged in a specific order with respect to each other providing the desired properties (shape, intensity, polarity, etc.) of the 112 magnetic field. Therefore, depending on the properties and of the nature of the magnetic elements, the shape of the magnetic field 112 can remain substantially unchanged over the extended period of time (such as the expected operating duration of the electronic device 100).

[000113] In some embodiments, however, the properties of magnetic field 112 can be varied by modifying a magnetic or other physical property of at least one of the magnetic elements. When at least one magnetic element has magnetic properties (for example, a polarity or field strength) that can be modified, the resulting magnetic field can also be modified. Thus, in some embodiments, at least one of the magnetic elements can be characterized as having dynamic magnetic properties. By dynamics it is planned that at least one magnetic property, such as polarity, can be modified. In this way, the properties of the magnetic field of the resulting magnetic field can also vary. The resulting magnetic field, in turn, can alter the magnetic characteristics of the 112 magnetic field which, in turn, can change how the magnetic union system causes objects to come together magnetically (alignment, orientation, centering and so on) ). An electromagnet is an example of such a magnetic element whose magnetic properties can be modified as desired. Other examples include a malleable non-magnetic substrate impregnated with magnetic dopant (such as magnetite). In this way, the malleable substrate can be formed into a physical form that can affect the nature of the magnetic field produced by the magnetic doping material.

[000114] With reference now to the other aspects of the magnetic coupling system, the tight coupling feature 110 may include one or more of the magnetic elements 116. When a plurality of magnetic elements is used, the arrangement of the plurality of magnetic elements 116 can be widely varied and can magnetically interact with a cooperating resource on another device. In one embodiment, the plurality of magnetic elements 116 associated with the fastening device 110 can help to secure at least a portion of another device otherwise connected to the electronic device 100 by means of the bonding device of the device 108.

[000115] At least some of the plurality of the magnetic elements 116 can have a fixed size and polarity (along the lines of a single bar magnet) while the other of the plurality of the magnetic elements 116 can have magnetic properties that can vary ( such as an electromagnet) while yet another can be formed to provide specific magnetic characteristics. For example, at least one of the plurality of magnetic elements 116 can be positioned and formed (if necessary) to interact with a magnetically responsive circuit included in the other device. Therefore, the magnetically responsive circuit can respond to the presence (or absence) of a particular magnetic element (s) of the firm feature 110. An example of the magnetically responsive circuit is described above with respect to the sensor of Hall Effect 118.

[000116] It should be noted that the magnetic field generated by the magnetic elements 116 should not extend much that magnetically sensitive circuits within the electronic device 100 (such as the Hall Effect sensor 118) are adversely affected. This is particularly important since the magnetic field is generally not contained within housing 102 since at least a portion of the magnetic field must extend in the z direction in order to interact with the magnetically active portion of the other devices. Therefore, the magnetic field at {x, y} needs to be limited in extent to avoid magnetically sensitive circuits, such as the Hall Effect sensor 118 and compass 120.

[000117] In a particular implementation, the magnetic elements of the bonding feature of device 108 can be grouped into distinct magnetic regions. In this way, the magnetic fields of the magnetic regions can overlap to form the 112 magnetic field. The magnetic regions can include several magnetic elements that can be arranged in groups represented by magnetic elements 126 and 128. By grouping the magnetic element in separate magnetic regions, the ability of the magnetic coupling system to provide a magnetic field having desired characteristics can be substantially improved. Magnetic elements 126 and 128 can interact to form magnetic field 112. In one embodiment, the interaction can take the form of the combination of magnetic properties of each of the magnetic elements 126 and 128. In some cases, the arrangement of the magnetic elements 126 and 128 can be interrelated in order to provide the magnetic field 112 with desired characteristics. For example, the magnetic elements 126 and 128 can be arranged in such a relative manner to each other that the magnetic field 112 is antisymmetric (or symmetrical) around a horizontal center line of the magnetic coupling feature 108. In another embodiment, the field Magnetic 112 can be antisymmetric (or symmetrical) around a vertical centerline of the joint feature 108. In yet another embodiment, magnetic field 112 can be antisymmetric (or symmetrical) both horizontally and vertically.

[000118] Figure 7A shows the electronic device 100 in proximity to the object 200 having the magnetic union feature 202. The magnetic union feature 202 of the object 200 can include magnetic elements, each generating an individual magnetic field that can interact with the other to form a resulting magnetic field in the aggregate. The resulting magnetic field can have magnetic characteristics (such as field strength and shape) that can interact with the magnetic field 112 of the electronic device 100 to join the electronic device 100 and the object 200 in a well-defined, precise and repeatable manner without fasteners without requiring external assistance. It should be noted that the magnetic field 208 can be approximately 2500 Gauss while the magnetic field 112 can be of the order of approximately 1400 Gauss when the bonding feature of device 108 is inactive.

[000119] Object 200 can take many forms including an accessory, peripheral, electronic device or the like. In one embodiment, object 200 can take the form of an electronic device along the lines of electronic device 100. In this way, electronic device 100 and electronic device 200 can be magnetically joined together using the device 108 splicing feature. and 202 magnetic coupling feature to form a cooperative electronic system. The cooperative electronic system can be one in which the electronic elements in the electronic device 100 and corresponding electronic elements in the electronic device 200 cooperate with each other to perform functions that cannot be performed by any of the electronic devices separately. In one embodiment, information can be passed between electronic devices 100 and 200.

[000120] More specifically, the magnetic coupling feature 202 can include at least magnetic elements 204 and 206, each of which can generate magnetic fields that cooperate with each other to provide magnetic field 208 (only a portion of which is shown) . The properties of magnetic field 208 can be based on the interaction of each of the plurality of magnetic elements 204 and 206. In this way, magnetic field 208 can have properties based on the physical layout, relative size and magnetic polarities that make up each of the plurality of magnetic elements 204 and 206. For example, magnetic elements 204 and 206 can be arranged along a central line and have magnetic properties that overlap to provide magnetic field 208 with desired properties. The density of the magnetic flux B208 of the magnetic field 208 of the object 200 can vary as a function of the distance x (i.e., B = B208 (x)) of the magnetic elements 204 and 206.

[000121] When object 200 takes the form of an electronic device, such as electronic device 100, then the density of the magnetic flux B208 satisfies equation (1). However, when the object 200 takes the form of an accessory device, then unlike the magnetic flux density B112 of the electronic device 100, which satisfies equation (1), the magnetic flux density B208 (x) of the accessory device 200 can satisfy equation (2). B208 (x = x1 + s)> Blimiar Equation (2) where s is the thickness of the housing 212 on side 212a and x1 is the interior separation distance.

[000122] In this way, accessory device 200 can magnetically interact with electronic device 100 more removed from electronic device 100 than would otherwise be possible. Therefore, accessory device 200 can be placed close to, but not necessarily contiguous with, electronic device 100 so that electronic device 100 and object 200 are magnetically joined in a well-defined, predictable and repeatable manner.

[000123] In addition to the magnetic coupling feature 202, the accessory device 200 may further include the magnetic coupling feature 216 which can be used to interact with the tight coupling feature 110. The magnetic coupling feature 216 can include a variety of components magnetically active. Some of the magnetic elements may take the form of magnetic elements arranged to interact cooperatively with corresponding magnetic elements in the tight bond feature 110. The other of the magnetic element may be more passive in nature in that they provide a mechanism for completing the magnetic circuit with elements magnetically active in the bonding feature 110. An example of a magnetically passive element is a ferromagnetic material, such as iron or steel, which can interact with a magnetic element actively providing an associated magnetic field. In this way, the ferromagnetic material can interact with the magnetic field to complete a magnetic circuit between the passive element in the bonding feature 216 and the active element in the bonding feature 110.

[000124] Figure 7B shows that accessory device 200 can be used to provide support functions and services for electronic device 100. By allowing a portion of magnetic field 208 having the density of magnetic flux B208 to satisfy equation (2) extending to the region 214, the Fluid magnetic attractive force between the bonding feature of device 108 and the bonding feature of accessory 202 can be created where the Fluid net attractive force satisfies equation (3a) and equation (3b). Fluid = (Ltotai). B2 / μo Equation (3a) B / B0 = f (xsep) Equation (3b) where Ltotal is the total surface area of the magnetic elements B is the density of the total magnetic flux (B208 + B112) xsep is the separation distance between the magnetic elements B0 is the density of the magnetic flux on the surface of the magnetic regions.

[000125] The net magnetic attraction force Fnet due to the interaction of magnetic field 208 and magnetic field 112, the bonding feature 202 can be used to activate the bonding feature of device 108. Furthermore, when the bonding feature of the device 108 is activated, the magnetic flux density B112 now satisfies equation (4). B112 (x = x0 + t)> Blimiar Equation (4) in the active state.

[000126] This increase in the density of the magnetic flux B112 in region 214 can result in a substantial increase in the net attractive magnetic force between the accessory device 200 and the electronic device 100. Furthermore, since the net attractive force varies with the density of the total magnetic flux B (B208 + B112) and the density of flux B in general can vary inversely with the separation distance (that is, equation 3 (b)), when the electronic device 100 and the accessory device 200 are approach and the separation distance xsep decreases to a limiting value consistent with the physical contact of the electronic device 100 and accessory device 200, the increase in the net liquid attractive force can increase sharply in a relatively short time. This pronounced increase in the net attractive force Net can cause the devices to quickly fit into what can be referred to as "fit in place" as shown in figure 7C showing the cooperating system 300 in the form of the electronic device 100 magnetically attached to the accessory device 200 along the engaging surface 218. It should be noted that in a representative embodiment, the magnetic elements in the bonding feature of device 108 can be magnets of type N52 while the magnetic elements in the bonding feature 216 can be magnets of type N35. Furthermore, the net magnetic attractive force can be in the range of approximately 10 newtons to at least 20 newtons where it may require approximately 3 newtons to activate the device 108 splicing feature.

onde Fneti é a força atrativa magnética líquida para cada um dos n componentes. Em uma modalidade, a força atrativa magnética líquida Fneti é substancialmente perpendicular a essa porção da superfície de engate 218 interceptada pelo campo magnético 112 e campo magnético 208.[000127] The FLID general magnetic attractive force between the device 100 and the device 200 on the engaging surface 218 can be derived as the sum of all the net magnetic attractive forces Fneti for all the actively coupled magnetic elements. In other words, the general FLIQUID net magnetic attractive force satisfies equation (5).

where Fneti is the net magnetic attractive force for each of the n components. In one embodiment, the net magnetic attractive force Fneti is substantially perpendicular to that portion of the engaging surface 218 intercepted by magnetic field 112 and magnetic field 208.

[000128] In order to ensure that the overall FLUID magnetic coupling force is uniform across the engagement surface between the device 100 and the device 200, the separation distances between each corresponding magnetic element in the coupling resources 108 and 202 are well controlled. The separation distance can be well controlled, for example, by forming the magnetic elements to match the shape of the devices. For example, if device 100 has a keyed (curved) housing, the magnetic elements in device 100 can be formed to match the curved shape. In addition, the magnetic elements can be formed in such a way that the magnetic vectors of corresponding magnetic elements align. In this way, the magnitude and direction of the net magnetic attractive force can be controlled as desired.

[000129] One result of the alignment of the magnetic vectors is that the direction of the net magnetic force between each magnetic element can be well controlled. Furthermore, by reducing the separation distance between corresponding magnetic elements to a minimum, the net attractive magnetic force Fneti between each magnetic element can be maximized. In addition, by maintaining a substantially uniform separation distance between the various magnetic elements, a correspondingly uniform magnetic bonding force can be provided along the engagement surface 218. Furthermore, by appropriately adjusting the corresponding magnetic vectors, Fluid can be applied normally on the hitch surface.

[000130] In addition to minimizing the separation distance between corresponding magnetic elements, the density of the magnetic flux between the corresponding magnetic elements can be increased using magnetic leads. A magnetic derivation formed of magnetically active material, such as iron or steel, can be placed on or near a magnetic element having the effect of directing the magnetic flux lines in a desired direction. In this way, for example, the magnetic flux lines that would otherwise propagate in a distant direction from a corresponding magnetic element can be partially redirected to a desired direction, such as to a region of magnetic union between the devices, thereby increasing the density of the general magnetic flux. Therefore, increasing the density of the magnetic flux available between the magnetic elements can result in a substantial increase in the net magnetic attractive force.

[000131] Figure 8A shows one embodiment of the bonding feature 110. In particular, the bonding feature 110 can be part of housing 102. In particular, the bonding feature can include magnetic elements 402 that can be mounted on the edge 404 of the housing 102. The magnetic elements 402 can be varied widely. For example, the magnetic elements 402 can be spatially arranged as a formation on the edge 404 to be used to join and secure at least a portion of an accessory device to a particular aspect of the electronic device 100. For example, when the accessory device adopts the In the form of a flap, the magnetic elements 402 can be used to magnetically secure the flap to the electronic device 100 to cover at least a portion of a display. The size and shape of the formation can also vary widely. In the embodiment shown in figure 8A, the formation can be rectangular and sized to cover a substantial portion of the edge 404.

[000132] Figure 8B shows a plurality of magnetic elements 410 that can be incorporated into an accessory device as part of the bonding feature 216. Some, but not all of the plurality of magnetic elements 410 can correspond with magnetic elements 402 and be used to magnetically attach accessory 200 to electronic device 100. In another embodiment, all or most of the plurality of magnetic elements 410 can be used to secure portions of accessory device 200 to form other support structures that can be used in conjunction with the electronic device 100. In one embodiment, the magnetic element 414 can be used to activate a magnetically sensitive circuit, such as the Hall Effect sensor 118.

[000133] Figures 9A - 9C show a representative magnetic union feature 500 according to a described embodiment. The magnetic coupling feature 500 may correspond, for example, with the coupling feature of device 108 shown in figure 6 and figures 7A - 7C. In the inactive state, the magnetic elements within the magnetic union feature 500 can be positioned away from the housing 102 to minimize the lines of the magnetic field that propagate through 102. On the other hand, in the active state, the magnetic elements can move towards the housing 102 in order to increase the number of magnetic field lines that propagate through housing 102, thereby satisfying equation (2).

[000134] The way in which the magnetic elements move can be widely varied. For example, the magnetic elements can rotate, articulate, move, slide or the like. In one example, the magnetic elements can be positioned within a channel that allows the magnetic elements to slide from a first position corresponding to the inactive state to a second position corresponding to the active state.

[000135] In the particular embodiment shown in figures 9A - 9C, the coupling feature 500 can include the magnetic element 502 having magnetic properties that can remain stable over a period of time. For example, it may be desired that the properties of the magnetic union remain stable through the expected operating duration of the electronic device 100. In this way, the magnetic field formed by the interaction of the magnetic fields of each of the magnets will also remain stable. The stability of the magnetic field can result in a very repeatable bonding process. This repeatability is particularly useful when the electronic device 100 goes through numerous and repeated cycles of joining (joining / separating) with other appropriately configured objects such as the accessory device 200 which requires consistently accurate placement.

[000136] In the representative embodiment shown, the magnetic element 502 can take many forms. For example, the magnetic element 502 can take the form of several magnets arranged in a specific order and configuration having stable magnetic properties (such as polarity and intrinsic magnetic intensity). However, in order to satisfy equation (1) when the magnetic union feature 500 is inactive, the magnetic element 502 must remain at least at a distance x = (x0 + t) from the outside of housing 102. In other words, the In order to satisfy equation (1), the dimensions of the coupling feature of the device 500 need to consider at least the magnetic properties and physical layout of the magnetic element 502.

[000137] In this way, the magnetic element 502 can be joined to the retention mechanism 504 arranged to exert the Fretention retention force. The Fretention holding force can be used to hold the magnetic element 502 in a position within the joining feature of the device 500 resulting in little or no leakage of the magnetic flux outside the electronic device 100 (i.e., equation (1) is satisfied ) when the device 500 splicing feature is inactive. In one embodiment, the retention mechanism 504 can take the form of a spring arranged to provide the retention force Fretenção according to equation (6): Fretenção - K. ΔX Equation (6) where K is the spring constant of the retention mechanism 504 and Δx is the spring displacement from equilibrium.

[000138] For example, figure 9B shows the representative magnetic union feature 500 in an active state. By the appropriate configuration of the magnetic element 502 and those in the accessory attachment feature 204, the magnetic interaction resulting from the magnetic field of the magnetic element 502 and that generated by the accessory attachment feature 204 can create a net attractive magnetic force at least as large as that required to activate the 500 magnetic coupling feature. In other words, the net attractive magnetic force can have at least that magnitude of the Fact activation force that satisfies equation (7), thereby overcoming the Fretention holding force causing the magnetic element 502 moves from the inactive position (ie, x - 0) to the active position (ie, x - x0), Fact - F retention (ΔX - Xo) Equation (7).

[000139] However, only another magnetic union feature that generates a magnetic field having properties that "match" the magnetic field properties of magnetic element 502 can activate the magnetic union feature 500. Therefore, as shown in figure 9C, the presence of the object 506 formed of the magnetically active material (such as steel) located on the outer surface of the housing 102 (that is, x = x0 + t) cannot activate the magnetic union feature 500. More specifically, in one embodiment, the attractive force The net magnetic generated between object 506 and the magnetic union feature 500 is less than 2 NT, while the activation force FACT can be of the order of approximately 3 NT.

[000140] More specifically, in order to transition from the inactive to the active state, the magnetic force created between the magnetic element 502 and the object 506 must be greater than the activation force Fact. However, since the magnetic flux density of the magnetic field generated by the magnetic element 502 on the outer surface of the housing 102 is less than Blimiar, any magnetic force generated between the object 506 and the magnetic element 502 is substantially less than Fretenção and, therefore, it fails to satisfy equation (7). Therefore, the magnetic element 502 remains fixed in place at approximately x = 0 and the magnetic union feature 500 cannot undergo the transition from the inactive to the active state.

[000141] It should be noted that the spring can be varied widely. For example, it can vary depending on the type of movement. Examples include tension, compression, twist, sheets and the like. In a particular implementation, leaf springs are used.

[000142] It should also be noted that in some embodiments, the magnetic element 502 can be fixed in such a way that no spring is required. In these modalities, although equation (1) may not be satisfied, it can nevertheless be a practical provision.

[000143] Figure 10 shows an embodiment of the device 600 joining device according to an embodiment of the present invention. The joining feature 600 can correspond with the element 208 in figure 6 and figures 7A - 7C. This modality is similar to the modality shown in figures 9A - 9C, except that instead of a single mechanism, multiple mechanisms and more particularly a pair of mechanisms in the form of magnetic element 602 and magnetic element 604 are used. In particular, Figure 10 shows the bonding feature of the device 600 in the active state. More specifically, the spring 606 joined to the magnetic element 602 and the spring 608 joined to the magnetic element 604 are each extended by the distance Δx.

[000144] In this system, the two mechanisms cooperate to form the magnetic field. They can move independently or they can be connected and move as a unit. Spring forces and magnetic forces can vary. For example, the system can be symmetrical or asymmetric. The arrangement of the magnetic elements can be similar or different. Again being symmetrical or asymmetric. The configuration may depend on the needs of the system.

[000145] The magnetic joining system can take many forms, each of which provides a repeatable and precise magnetic joining mechanism that can be used to join multiple properly configured objects.

[000146] Figures 11A - 11B show a specific implementation of the device coupling facility 108 in the form of the device coupling facility 700 according to an embodiment. The bonding feature of the device can correspond with the element 108 shown in figure 6 and figures 7A - 7C. In some cases, the attachment feature of device 700 can be used in conjunction with springs 606 and 608, as shown in figure 10. As shown in figure 11A, the attachment feature of device 700. In particular, the attachment feature of the device 700 is shown in the inactive state having magnetic elements in the form of the magnetic assembly 702 which can be contained within a housing. In this way, a retention mechanism (not shown) joined to the magnetic assembly 702 can exert the associated retention force Fretenção. The Fretention holding force can be used to hold the magnetic assembly 702 in a position consistent with the joining feature of the device 700 being in an inactive state (i.e., satisfying equation (1)).

[000147] The magnetic set 702 can each include individual magnets. In the described embodiment, the individual magnets can be arranged in a structure in which the polarities of the magnets can be oriented to form a coded magnetic structure. The encoded magnetic structure can be formed from a sequence of magnetic polarities and in some cases magnetic intensity. In other words, the sequence of magnetic polarities can be represented, for example, as {+1, +1, -1, +1, -1, +1, -1, -1}. For this particular example, "+1" indicates the direction and intensity of the magnet. Therefore, a positive sign "+" may indicate that the corresponding magnet is aligned with a magnetic vector in a particular direction, a negative sign "- 'may indicate a magnetic vector in an opposite direction and" 1 "indicates the intensity of a unitary magnet.

[000148] When a plurality of magnets of the same polarity are placed close together, the magnetic fields of each of the plurality of magnets can combine, such that the plurality of magnets can be considered equivalent to a single magnet, the only magnet having the combined properties of the plurality of magnets. For example, the encoded magnetic sequence {+1, +1, -1, +1, -1, +1, -1, -1} representing eight individual magnets can be considered equivalent to the encoded magnetic sequence {+2, - 1, +1, -1, +1, -2} personified as a formation of six individual magnets. In one embodiment, the magnets in a first and last position can have the same magnetic intensity as the other magnets in the formation, plus twice their respective size. On the other hand, the magnets in the first and last position can be approximately the same size as the other magnets, but have twice the magnetic intensity of the other magnets. In any case, the equivalence of the magnetic properties can provide a more compact coded sequence of magnets. The smaller size can help reduce weight, as well as preserve the amount of valuable internal real estate needed to house the magnetic union feature. In addition, since the magnetic flux density is directly related to that area through which the magnetic field lines propagate, when the area through which a given magnetic flux propagates decreases, the resulting magnetic flux density increases.

[000149] In one embodiment, the magnetic assembly 702 may include individual magnets 712a, 712b and 712c having relative sizes of 2L, 1L and 1L, respectively, where "L" represents a unitary length. It should be noted that as discussed above, a magnet having a relative size of "2L" can be personified as a single magnet having a physical length of "2L", two magnets side by side, each having a "1L" length with magnetic poles aligned with each other, or a magnet of unitary length L having twice the magnetic intensity of the other magnets. Thus, for the remainder of this discussion, with respect to the terms 2L and 1L, "L" can represent a unit length and the relative intensity of the magnet can be represented by the associated digit. For example, a magnet having a relative magnetic intensity of "1" but a length of "2L" can be considered equivalent to a magnet having a relative intensity of "2" and a length of "1L". In this way, both the relative magnetic intensities and the orientation can be used to form the encoded magnetic structure.

[000150] For example, magnet 712a can have an overall length of approximately twice that of magnets 712b or 712c. On the other hand, magnet 712a can be the same length as magnets 712b and 712c, but have an inherent magnetic intensity twice that of magnets 712b and 712c. In yet another embodiment, magnet 712a can be an equivalent magnet formed of two (or more) constituent magnets having their respective polarities aligned.

[000151] In one embodiment, magnets 712a, b, c can be separated from each other by a predetermined distance. For example, in an implementation, magnets can be spaced equidistant from each other. This spacing is based, of course, on the desired magnetic properties of the generated magnetic field. In another embodiment, these magnets having anti-aligned polarities can be magnetically joined together. In this way, the magnetic bond formed between the adjacent magnets can be used to maintain the integrity of the sequence of the magnets in the magnetic assembly. However, those magnets having aligned polarities must be held together by an externally applied force to overcome the repulsive magnetic force generated between the two aligned magnets.

[000152] In addition to the size and positioning, the magnetic polarities of the 712a, b, c magnets can be selected based on the desired properties of the generated magnetic field. In the embodiment shown, however, the magnetic elements are magnetically coupled to each other end to end, thereby reducing the amount of space required and increasing the density of the magnetic flux by reducing the general region in which the lines of the magnetic field are propagated.

[000153] In particular, the magnetic set 702 may have a set of specific magnetic polarity patterns in which each of the magnets 712a, b, c is oriented in such a way that its magnet poles N or S are aligned (or anti-aligned) in a particular way. For example, the magnets in the magnetic assembly 702 can be arranged to form the first encoded magnetic structure {+1, -1, +1} in which the magnetic poles of the magnets 712a, b, c are aligned according to the first pattern of magnetic polarity (P1, P2, P1} whereby it is planned that the magnetic pole of magnet 712a is anti-aligned with respect to magnet 712b which, in turn, is anti-aligned with magnet 712c.

[000154] Magnetic assembly 702 may also include individual magnets 714a, b, c and have relative sizes of 1L, 1L and 2L, respectively. In addition, magnets 714a, b, c can be arranged to have their respective magnetic poles aligned according to the second magnetic polarity pattern {P2, P1, P2} which is the inverse (or complement) of the first polarity pattern magnetic {P1, P2, P1}. In terms of the encoded magnetic structure, magnets 714a, b, c can be aligned according to the second encoded magnetic sequence {-1, +1, -1} which is the inverse, or complement, of the first encoded magnetic structure {+ 1, -1, +1}. This antisymmetric relationship between magnets 712a, b, c and 714a, b, c provides a magnetic field that is antisymmetric with respect to the center line 716.

[000155] Figures 11A and 11B also show a specific implementation of accessory attachment feature 800 which can, for example, correspond with element 202 shown in figure 6 and figures 7A-7C. 802 magnetic assemblies can include several magnetic elements. The magnetic elements can be arranged in such a way that the combined magnetic field matches the magnetic field of the magnetic assembly 702.

[000156] Magnetic assembly 802 may include magnets 802a, 802b and 802c, each being approximately the same size as the corresponding magnet 712a, 712b and 712c in magnetic assembly 702. However, in order to maximize the net attraction force Fnet and to conduct the magnetic interaction between the magnetic fields to the desired balance, the magnets 802a, b, c are aligned based on the second magnetic polarity pattern {P2, P1, P2}. The magnetic assembly 802 may also include magnets 804a, 804b and 804c, each being approximately the same size as the corresponding magnets 714a, 714b and 714c. Furthermore, according to the general objective of magnetic interaction between magnetic fields for balance in the desired configuration of the devices, magnets 804a, b, c can be aligned according to the first magnetic polarity pattern {P1, P2, P1}.

[000157] Figure 11B shows the joining feature of the device 700 in the active state due to the magnetic interaction between the magnetic assemblies 702 and 802. In particular, since the arrangement of the magnetic elements between the joining feature 700 and those in the accessory union 800 "equals", so the magnetic interaction between the magnetic fields can induce the movement of the magnetic assemblies 702 from the inactive state (ie, x = 0) to the active state (ie, x = x0).

[000158] Figure 12 illustrates a sequence of positions of relative change for the magnetic structure of the magnetic assembly 702 and the structure of the complementary magnet of the magnetic assembly 802. The magnetic assembly 702 is shown as encoded with the encoded magnetic sequence {+2, -1, +1, -1, +1, -2}. The 802 magnetic array is shown as encoded with the complementary encoded magnetic sequence {-2, +1, -1, +1, -1, +2}. For this example, the magnets can have the same intensity (or amplitude) of magnetic field or substantially the same, that for the purpose of this example a unit of 1 is provided (where A = attraction, R = repulsion, A = -R, A = 1, R = -1). In this example, magnetic sets 702 and 802 are moved relative to each other by "1L" in length at one time (note that antisymmetry around the center line 716 of the encoded magnetic sequence allows the results of a shift to the left to reflect the results of a shift on the right, so only a shift on the right is shown).

[000159] For each relative alignment, the number of magnets that repel more the number of magnets they attract are calculated, where each alignment has a total force according to a function of the magnetic force based on the intensities of the magnetic field of the magnets. In other words, the total magnetic force between the first and second magnet structures can be determined as the sum from left to right along the structure of the individual forces, at each magnet position, each magnet or pair of magnets interacting with its corresponding magnet directly opposite the opposite magnet structure. Where only one magnet exists, the corresponding magnet is zero and the force is zero. Where two magnets exist, the force is R for equal poles or A for opposite poles for each unitary magnet.

[000160] The total magnetic force can be calculated for each of the figures and shown with each figure along with the relative change value. Thus, the use of a specific encoded magnetic sequence {+2, -1, +1, -1, +1, -2} can result in the net attractive magnetic force Fnet ranging from -3 (ie 3R) to + 8 (ie, + 8A) where the peak occurs when the magnetic sets 702 and 802 are aligned, such that their respective codes are also aligned. It should be noted that the free net magnetic force of the peak can vary from -3 to +4. As such, the net magnetic force can cause the 702 magnetic assemblies to generally repel unless they are aligned, such that each of their magnets is correlated with a complementary magnet (that is, a south pole of the magnet aligns with another north pole of the magnet or vice versa). In other words, the magnetic assemblies 702 and 802 correlate highly when they are aligned such that they are substantially reflected.

[000161] It should also be noted that when the magnetic sets 702 and 802 are 180 ° out of phase (that is, somewhat similar as the top-to-bottom misalignment also referred to as upside down) the net magnetic force generated can be of the order of 8R. Therefore, it is highly unlikely that devices being magnetically joined together using the 702 and 802 magnetic assemblies can be joined upside down.

[000162] Figure 13 illustrates graph 900 of the FLUID function (L). The FLUID function (L) describes the FLUID liquid magnetic force as a function of the displacement (L) of the change shown in figure 12 for magnet structures encoded in magnetic assembly 702 and magnetic assembly 802. It should be noted that the symmetrical nature of the magnetic structures encoded in the magnetic assemblies 702 and 802 around the center line 716 provides that the FLUID function (L) is also antisymmetric around the center line 716. In this way, the results in figure 12 can be marked on the right side of the center line 716 and reflected around center line 716 to fill the left side of graph 900.

[000163] As shown in figure 13, the FLUID function (L) has a maximum global value when the magnetic sets 702 and 802 correlate in a position corresponding to the center line 716. In other words, the FLID function (L = 0 ) reaches a maximum (i.e., 8A) when all magnetic elements in magnetic assemblies 702 and 802 having opposite polarities align. Any other configuration (ie FLUID (L ^ O) results in FLUID liquid magnetic force being less than the maximum global value (of 8A). It should also be noted, however, that the FLUID (L) function has at least two local maximum values (ie FLUID (L = ± 3)) that allows a weak union between the magnetic assemblies 702 and 802. However, a strong durable union can only occur when the magnetic union feature of the device 700 associated with the assembly magnetic 702 is properly activated, therefore, by establishing the FACT activation force that satisfies equation (8), a "false activation" of the magnetic union feature of device 700 or a weak union between magnetic assemblies 702 and 802 can be avoided FLID (L = local maximums) <FACT <FLID (L = global maximum) Equation (8).

[000164] It should also be noted that the activation force FACT is related to the holding force Fretenção through equation (6). In this way, equation (6) and equation (8) in view of the FLUID function (L) can be used to determine a suitable value for the spring constant k.

[000165] Figures 14 and 15 show other modalities where the magnetic elements can be arranged vertically and horizontally. In addition, the magnetic elements can be sized to have polarities that also extend both horizontally and vertically. For example, arrangement 1000 shows two lines of magnetic elements where each magnetic element extends the height H in the vertical direction. In the arrangement shown, each vertically arranged magnetic element has the same magnetic polarity forming the equivalent magnetic structure 1002. In other words, both arrangement 1000 and arrangement 1002 can both be characterized as having the encoded magnetic sequence {+ 2, -2, + 2, -2, + 2, -2}.

[000166] Figure 15 shows a top view of the magnetic formation configured as a two-dimensional encoded magnetic sequence 1004 according to the described modalities. The two-dimensional encoded magnetic sequence 1004 can be used to extend the combined magnetic field over an area that extends in both the x and y directions. This extended area can result in a general increase in the available area to propagate the lines of the magnetic field which can result in an increase in the magnetic flux and a proportional increase in the net magnetic attractive force. In addition to providing an improved magnetic union, the two-dimensional encoded magnetic sequence 1004 can approximate non-integer values of magnetic properties, such as magnetic intensity. For example, with the magnetic array 1004, the magnetic fields of the various components can combine to approximate the encoded magnetic sequence {+ 1,5,1,5, + 1,5, -1,5, + 1,5, -1 , 5}. In addition, a two-dimensional encoded magnetic sequence 1004 can assist in providing vertical alignment in addition to horizontal alignment.

[000167] For the remainder of this discussion, various modalities of accessory device 200 are discussed.

[000168] In one embodiment, accessory device 200 may include various protective elements that can be used to protect certain aspects of electronic device 100. For example, accessory device 200 may take the form of a protective cover. The protective cover may include a tab hingedly connected to a hinge assembly. The hinge assembly can, in turn, be coupled to the electronic device 100 via the accessory attachment feature 202. In this way, the flap portion can be used as a protective cover to protect aspects of the electronic device 100, such as a display. The flap can be formed from various materials such as plastic, cloth and so on. The flap can be segmented in such a way that a segment of the flap can be raised to expose a corresponding portion of the display. The tab may also include a functional element that can cooperate with a corresponding functional element in the electronic device 100. In this way, manipulation of the tab may result in a change in the operation of the electronic device 100.

[000169] The tab may include magnetic material that can be used to activate a magnetically sensitive circuit in the electronic device 100 based, for example, on the Hall Effect. The magnetically sensitive circuit can respond by generating a signal that can be used, in turn, to change the operating state of the electronic device 100. Since the cover can be easily attached directly to the tablet device housing without fasteners, the cover can essentially match the shape of the electronic device 100. In this way, the coverage will not depreciate or otherwise obscure the appearance and impression of the electronic device 100.

[000170] In one embodiment, accessory device 200 can be used to increase the overall functionality of electronic device 100. For example, accessory device 200 can be configured to act as a suspending device. When magnetically attached to electronic device 100, accessory device 200 can be used to suspend electronic device 100. In this way, electronic device 100 can be used as a display to present visual content, such as art, films, photos and so on. onwards on a wall or suspended from a ceiling. As a suspending apparatus, accessory device 200 can be used to suspend electronic device 100 from a wall or ceiling. The electronic device 100 can be easily removed by simply exerting sufficient release force to overcome the FLUID liquid magnetic attractive force. Accessory device 200 can be left in place and used to reattach electronic device 100 (or another device) at a later time.

[000171] In one embodiment, accessory device 200 may also take the form of a clamping mechanism for joining objects that are not themselves equipped to join magnetically in electronic device 100. For example, accessory device 200 can be configured to carry a pen or other such input device. The pen can be used to provide inputs to the electronic device. In some cases, accessory device 200 may provide a signal to electronic device 100 indicating the presence of the pen. The signal can cause the electronic device 100 to enter a pen recognition state, for example. More particularly, when accessory device 200 is magnetically joined to electronic device 100, electronic device 100 can activate the pen input state in order to recognize pen type inputs. When the accessory device 200 is removed, the electronic device 100 can disable the input state of the pen. In this way, the pen can be conveniently joined / separated from the electronic device 100 when necessary.

[000172] Accessory device 200 can take the form of a holder that can be used to increase the functionality of electronic device 100. For example, accessory device 200 can be configured to act as a display platform on which a display device electronic 100 can be viewed at a comfortable viewing angle such as 75 °. In other words, when placed on a horizontal surface, such as a table or desk, accessory device 200 can support electronic device 100 in such a way that the visual content shown on the display can be viewed at approximately a viewing angle of approximately 75 °.

[000173] Accessory device 200 may also take the form of a holder which can be used to increase the functionality of electronic device 100 in a keyboard state. In the keyboard state, accessory device 200 can be used to present a touch base surface at an angle that is ergonomically suitable. In this way, touch input events can be applied (on a virtual keyboard, for example) at an angle that does not overload the wrist, hands, arms, etc. of user.

[000174] The remainder of this discussion will describe particular modalities of the devices that can use the magnetic union system. In particular, figure 16A and figure 16B show the electronic device 100 shown in terms of the tablet device 1100 and the accessory device 200 is shown as the cover assembly 1200, each in top perspective views. These elements can generally correspond with any of those previously mentioned. In particular, figures 16A and 16B show two perspective views of the tablet device 1100 and cover assembly 1200 in the open configuration. For example, figure 16A shows the joining feature of device 108 included in the tablet device 1100 and its relationship to the tablet device 1100. Figure 16B, on the other hand, is the view shown in figure 16A rotated approximately 180 ° to provide a second view of the joint feature 202 and its relationship to the cover assembly 1200.

[000175] The 1100 tablet device can take the form of a tablet computing device, such as the iPad ™ manufactured by Apple Inc. of Cupertino, CA. Referring now to Figure 16A, the tablet device 1100 may include housing 1102 which can engage and support the bonding feature of device 108. In order not to interfere with the magnetic field generated by the bonding feature of device 108, at least that portion of housing 1102 closest to the attachment feature of device 108 may be formed of any number of non-magnetic materials, such as plastic or non-magnetic metal, such as aluminum. The housing 1102 may also internally wrap and support various structural and electrical components (including integrated circuit chips and other circuitry) to provide computing operations for the 1100 tablet device. The housing 1102 may include the opening 1104 for placing the internal components and can be dimensioned to accommodate a set of display or system suitable to equip a user with at least the visual content, for example, through a display. In some cases, the display set may include touch-sensitive capabilities providing the user with the ability to produce tactile inputs on the 1100 tablet device using touch inputs. The dial assembly may be formed of several layers including a topmost layer taking the form of transparent cover glass 1106 formed of polycarbonate or other suitable plastic or highly polished glass. With the use of highly polished glass, cover glass 1106 can take the form of cover glass 1106 substantially by filling aperture 1104.

[000176] Although not shown, the display assembly underlying the 1106 cover glass can be used to display images using any suitable display technology, such as LCD, LED, OLED, electronics or e-paints and so on. The dial assembly can be placed and secured inside the cavity using a variety of mechanisms. In one embodiment, the dial assembly is fitted into the cavity. It can be placed flush with the adjacent portion of the housing. In this way, the display can present visual content that can include visual, static images, as well as icons such as the graphical user interface (GUI) that can provide information to the user (eg text, objects, graphics), as well how to receive inputs provided by the user. In some cases, the displayed icons can be moved by a user to a more convenient location on the display.

[000177] In some embodiments, a display mask can be applied to, or incorporated into or under the 1106 cover glass. The display mask can be used to accentuate an unmasked portion of the display used to present visual content and can be used to make the bonding feature of device 108 and the bonding feature 110 less obvious.

[000178] The 1100 tablet device can include several ports that can be used to pass information between the 1100 tablet device and the external environment. In particular, data port 1108 can facilitate data and power transfer while speakers 1110 can be used to produce audio content. The home button 1112 can be used to provide an input signal that can be used by a processor included in the 1100 tablet device. The processor can use the home button 1112 signal to change the operating state of the 1100 tablet device. For example, the home button 1112 can be used to restore a currently active page displayed by the display assembly.

[000179] In one embodiment, accessory device 200 can take the shape of cover set 1200. Cover set 1200 can have a look and feel that complements those of the tablet device 1100 adding to the overall look and feel of the tablet device 1100. The cover assembly 1200 is shown in figures 16A and 16B joined on the tablet device 1100 in an open configuration in which the cover glass 1106 is fully visible. The cover assembly 1200 can include the flap 1202. In one embodiment, the flap 1202 can be of a size and shape according to the glass of the cover 1106. The flap 1202 can be pivotally connected to the accessory fitting 202 by means of a hinge assembly (not shown). The magnetic bonding force between the bonding feature 202 and the bonding feature of device 108 can keep the cover assembly 1200 and the tablet device 1100 in proper orientation and placement in front of the flap 1202 and cover glass 1106. By appropriate orientation, it is planned that the cover assembly 1200 can only properly join on the tablet device 1100 having the flap 1202 and the cover glass 1106 aligned in a corresponding engagement. The corresponding arrangement between the cover glass 1106 and the flap 1202 is such that the flap 1202 covers substantially all of the cover glass 1106 when the flap 1202 is brought into contact with the cover glass 1106 as shown in figure 17A below.

[000180] Figures 17A and 17B show the cover assembly 1200 and the tablet device 1100 magnetically joined together. Figure 17A shows a closed configuration in which the cover glass 1106 is fully covered by and in contact with the flap 1202. Cover assembly 1200 can pivot around hinge assembly 1204 of the closed configuration of figure 17A for an open configuration of figure 17B. In the closed configuration, the inner layer 1206 of the cover assembly 1200 can come in direct contact with the glass of the cover 1106. In one embodiment, the inner layer 1206 can be formed of material that can passively clean the glass of the cover 1106. Cleaning passive through the inner layer 1206 of the cover glass 1106 can be carried out by moving these portions of the inner layer 1206 in contact with the cover glass 1106. In a particular embodiment, the inner layer 1206 can be formed of a microfiber material.

[000181] In order to transition from the closed to the open configuration, the Fliberation release force can be applied to the 1202 flap. The Fliberation release force can overcome the magnetic attractive force between the bonding feature 216 on the 1202 flap and the joint 110 on the tablet device 1100. Therefore, the cover assembly 1200 can be attached to the tablet device 1100 until the release force Fliberation is applied to the flap 1202. In this way, the flap 1202 can be used to protect the glass cover 1106. For example, cover assembly 1200 can be magnetically attached to the tablet device 1100. Flap 1202 can then be placed over and magnetically attached to the cover glass 1106 by the magnetic interaction between the magnetic bonding features 110 and 216 The flap 1202 can be separated from the cover glass 1106 by applying the Fliberation release force directly to the flap 1202. The Fliberation release force can overcome the magnetic attraction between the magnetic coupling features 110 and 216. Therefore, the flap 1202 can then move away from the glass of the cover 1106 unimpeded.

[000182] In order to maintain a good magnetic bond between the flap 1202 and the magnetic bond feature 110, the flap 1202 can include several magnetic elements. Some of the magnetic elements in the flap 1202 may interact with corresponding magnetic elements in the magnetic joint feature 110. The net magnetic attractive force generated between the magnetic elements may be strong enough to prevent the inadvertent release of flap 1202 from the cover glass 1106 during normal handling. The net magnetic attractive force, however, can be overcome by the Fliberation release force.

[000183] Figure 18 shows a top view of a specific modality of the cover set 1200 in the form of the segmented cover set 1300. The segmented cover set 1300 can include the body 1302. The body 1302 can have a size and shape of according to the cover glass 1106 of the tablet 1100. The body 1302 can be formed of a single piece of folding or flexible material. The body 1302 can also be divided into segments separated by a folding region. In this way, the segments can be folded with respect to each other in the folding regions. In one embodiment, the body 1302 can be formed of layers of material joined together to form a laminated structure. Each layer can take the form of a single piece of material that can have a size and shape in accordance with the 1302 body. Each layer can also have a size and shape that corresponds to only a portion of the 1302 body. For example, a layer of rigid or semi-rigid material of approximately the same size and shape as a segment may be joined to or otherwise associated with the segment. In another example, a layer of rigid or semi-rigid material having a size and shape according to the body 1302 can be used to provide the segmented cover set 1300 as a set with a resilient foundation. It should be noted that the layers can each be formed of materials having desired properties. For example, a layer of the segmented cover assembly 1300 that comes into contact with delicate surfaces, such as glass, may be formed of a soft material that will ruin or otherwise damage the delicate surface. In another embodiment, a material such as microfiber can be used that can passively clean the delicate surface. On the other hand, a layer that is exposed to the external environment can be formed of a more robust and durable material, such as plastic or leather.

[000184] In a specific embodiment, the segmented body 1302 can be divided into several segments 1304 - 1310 interspersed with thinner folding portions 1312. Each of the segments 1304 - 1310 can include one or more inserts disposed therein. For example, the segments can include a cavity region where the inserts are placed or alternatively the inserts can be embedded in the segments (for example, insert molding). If cavities are used, the region of the cavity may be of a size and shape to accommodate the corresponding inserts. The inserts can have various shapes, but are more typically formed to match the general appearance of the segmented body 1302 (e.g., rectangular). The inserts can be used to provide structural support for the segmented body 1302. That is, the inserts can provide hardness for the cover assembly. In some cases, the inserts may be referred to as hardeners. As such, the cover assembly is relatively rigid, except along the folding regions that are thinner and do not include inserts (for example, allow folding) making the 1300 segmented cover assembly more robust and easier to handle. In one embodiment, segments 1304, 1306 and 1310 can be related to segment 1308 in size in the proportion of approximately 0.72 to 1 meaning that segments 1304, 1306 and 1310 are dimensioned in width to be approximately 72% of width from segment 1308. In this way, a triangle having appropriate angles can be formed (ie, approximately 75% for the display platform and approximately 11% for the keyboard platform discussed below).

[000185] Segments 1306, 1308 and 1310 can include inserts 1314, 1316 and 1318, respectively (shown in the form of dotted lines). Inserts 1314 - 1318 can be formed of rigid or semi-rigid material adding resilience to the 1302 body. Examples of materials that can be used include plastics, fiberglass, carbon fiber composites, metals and so on. The segment 1304 can include insert 1320 also formed of resilient material, such as plastic, but also arranged to accommodate the magnetic elements 1322, some of which can interact with the magnetic elements in the tablet device 1100 and more specifically the joint feature 110.

[000186] Due to the ability of the segmented body 1302 to bend and more particularly of the various segments to bend with respect to each other, most of the magnetic elements 1322 can be used to interact magnetically with the magnetically active insert 1324 embedded in the insert 1318. By connection of both the active insert 1324 and the magnetic elements 1322, various support structures can be formed, some of which can be triangular in shape. The triangular support structures can assist in the use of the 1100 tablet device. For example, a triangular support structure can be used to support the 1100 tablet device in such a way that the visual content can be presented at a desirable viewing angle from approximately 75 ° from the horizontal. However, in order to be able to properly fold segmented coverage 1300, segment 1308 can be sized to be slightly larger than segments 1304, 1306 and 1310 (which are generally the same size). In this way, segments can form a triangle having two equal sides and a third longer side, the triangle having an interior angle of approximately 75 °.

[000187] An attempt to form at least one triangular support structure may include the folding of segment 1304 with respect to segments 1306 - 1310 in such a way that most of the magnetic elements 1322 embedded in the insert 1320 magnetically attract the magnetically active insert 1324 In this way, segment 1304 and segment 1310 can be magnetically joined to form a triangular support structure having the appropriate dimensions. The triangular support structure can be used as a platform on which the 1100 tablet device can be placed, such that the visual content can be displayed at approximately 75 °. In another example, the segmented cover 1300 can be folded to form a triangular support structure that can be used as a keyboard support. The segmented cover 1300 can also be folded to form a triangular support structure that can be used to suspend the tablet device 1100 from a horizontal support piece (such as a ceiling) or a vertical support piece (such as a Wall).

[000188] The cover assembly 1300 can be pivoted to the accessory connection feature 202 by means of a hinge assembly. The hinge assembly can provide one or more pivots to allow the cover to bend over the device while the cover assembly is joined to the device through the magnets. In the illustrated embodiment, the hinge assembly may include first hinge portion (also referred to as first end ear) 1328 and a second hinge portion (or second end ear) 1330 disposed opposite the first end ear. The first end ear 1328 can be rigidly connected to the second end ear 1330 via connecting rod 1332 (shown in the form of a dotted line) embedded in a segmented portion of the body 1302. The longitudinal geometric axis of connecting rod 1332 can act as pivot line 1333 around which the segmented body can articulate in relation to the hinge assembly. The connecting rod 1332 can be formed of metal or plastic strong enough to rigidly support the cover assembly 1300, as well as any objects, such as the tablet device 1100, magnetically joined in the magnetic joint feature 202.

[000189] In order to prevent metal-to-metal contact, the first end ear 1328 and the second end ear 1330 may each have protective layers 1336 and 1338, respectively, attached to them. The protective layers (also referred to as dampers) 1336 and 1338 can prevent direct contact between the first end ear 1328 and the second end ear 1330 with housing 1102. This is particularly important when the end ears 1328, 1330 and the housing 1102 are formed of metal. The presence of 1336 and 1338 dampers can prevent metal-to-metal contact between the end ears and housing 1102, thereby eliminating the chance of substantial wear and tear at the point of contact that can degrade the overall appearance and impression of the device of 1100 tablet.

[000190] In order to maintain their protective qualities, the 1336 and 1338 bumpers can be formed of material that is resilient, durable and resists the disfiguring finish on the outer surface of the 1100 tablet device. This is particularly important due to the tight tolerances required for good magnetic bonding and the number of bonding cycles expected during the operating life of the 1100 tablet device. In this way, shock absorbers 1336 and 1338 can be formed from soft plastic, cloth or paper that can be joined at the end ears using any suitable adhesive. It should also be noted that in some cases, shock absorbers can be removed and replaced with new ones when necessary.

[000191] The first end ear 1328 and the second end ear 1330 can be magnetically connected to the electronic device by means of the hinge extension 1340 which is configured to articulate with respect to the end ears. The articulation can be performed using hinge columns 1342 (a portion of which can be exposed). The hinge columns 1342 can pivot the hinge extension 1340 on both the first end ear 1328 and the second end ear 1330. The hinge extension 1304 may include magnetic elements. The magnetic elements can be arranged to magnetically join the hinge extension 1340 into a magnetic joining feature having an associated arrangement of magnetic elements in the electronic device. In order to hold the magnetic elements in place within the hinge extension 1340, hinge columns 1342 can be used to secure the magnetic elements located at both ends of the hinge extension 1340 reducing the likelihood that the magnetic elements in the hinge extension 1340 move continuously with the potential to break the magnetic union between the 1340 hinge extension and the magnetic union feature on the electronic device.

[000192] In order to ensure that there is no interference between the magnetic elements in the 1340 hinge extension and the corresponding magnetic elements in the electronic device, the 1340 hinge extension can be formed of magnetically inactive material, such as plastic or non-magnetic metal, such as aluminum. When the extension of hinge 1340 is formed of magnetically inactive metal, such as aluminum, metal-to-metal contact between the extension of hinge 1340 and housing 1102 of electronic device 1100 can be prevented with the use of protective layer 1344. The layer protective 1344 can be applied to the surface of the hinge extension 1340 which faces housing 1102 when the hinge extension 1340 and the electronic device 1100 are magnetically joined together. Protective layer 1344 (also referred to as tag 1344) can be formed of many materials that will not ruin the finish of housing 1102. Such materials can include, for example, paper, cloth, plastic and so on.

[000193] Figures 19A and 19B show a more detailed view of the two hinge extension modes 1340. More specifically, figure 19A shows the hinge extension mode 1400 where magnetically inert spacers are used to separate and secure the magnetic elements. In particular, the hinge extension 1400 can enclose and support the magnetic elements 1402 used by the magnetic joint feature 202 to magnetically join the segmented cover assembly 1300 on the tablet device 1100. The magnetic elements 1402 can be arranged in a specific configuration that matches corresponding magnetic elements in the bonding feature of device 108 on the tablet device 1100. In this way, the segmented cover set 1300 and the tablet device 1100 can join together precisely and repeatedly.

[000194] In order to keep the magnetic coupling repeatable and stable over an extended period of time, the magnetic elements 1402 can remain in a stable configuration. In other words, the magnetic elements 1402 in the hinge extension 1400 must remain in their relative positions and polarities in front of the corresponding magnetic elements in the magnetic union system on the tablet 1100 for an extended period of time. This is particularly important when repeated bonding cycles are expected to occur over an expected operating life of the 1300 cover assembly and / or 1100 tablet device.

[000195] Therefore, in order to guarantee the integrity of the magnetic coupling during the course of many joining cycles, the configuration of the magnetic elements 1402 can remain essentially fixed with respect to each other and the corresponding magnetic elements in the connection feature of the device 108. Therefore, in order to ensure that the physical layout of the magnetic elements 1402 remains essentially fixed, filling material 1404 can be inserted between the various magnetic elements in the extension of the hinge 1400. The filling material 1404 can be non-magnetic material such as plastic . The filling material 1404 can be formed to fit tightly in the spaces of the interstices between the magnetic elements. In this way, the magnetic elements 1402 remain in a fixed and stable configuration for an extended period of time.

[000196] On the other hand, figure 19B shows another modality of hinge extension 1340 in the form of hinge extension 1410 that uses the mutual magnetic attraction between the physically adjacent magnetic elements to fix the magnetic elements in place. In this way, the number of component parts is reduced. In addition, due to the reduced area absorbed by the magnetic elements 1402, the density of the corresponding magnetic flux can be increased. However, end caps 1412 can be used to secure these magnetic elements located at either end of the hinge extension 1410. End caps 1412 may be required to overcome a liquid magnetic repulsive force when the magnetic elements at either end of the hinge extension 1410 have aligned polarities. In addition to end caps 1412, an alternative embodiment can provide centrally located spacer 1414. Centrally located spacer 1414 can be formed of magnetically inert material and be used to hold magnetic elements 1402 in place.

[000197] Figure 19C shows that portion of the hinge extension 1340 that forms part of the engaging surface when the segmented cover assembly 1300 is magnetically joined in the tablet device 1100. In particular, the label 1344 is shown joined in the hinge extension 1340 using adhesive, such as glue. It should be noted that the tag 1344 is arranged to match the shape of that portion of housing 1102 which also forms part of the engaging surface. In this way, the separation distance between corresponding magnetic elements can be minimized.

[000198] Figure 20A shows a representative side view of the segmented cover assembly 1300 magnetically attached to the 1100 tablet device. Figure 20B shows representative section views of the segmented cover assembly 1300 / tablet device 1100 along the shown AA line. in figure 18. Figure 20B shows a covered configuration and figure 20C shows a folded back configuration that fully exposes the protective layer 1106 of the tablet device 1100.

[000199] Figure 21A shows a side view of section 1500 of the extension of hinge 1340 magnetically joined in housing 1102 having a curved shape. In this embodiment, housing 1102 can be curved in shape and is formed of non-magnetic material such as aluminum. Magnetic element 1502 can be incorporated into the bonding feature of device 108 on tablet device 1102. In some embodiments, in order to prevent metal-to-metal contact, in those embodiments in which magnetic element 1502 is metal, a protective film can be joined to an engagement surface of the magnetic element 1502 which prevents the magnetic element 1502 from contacting the housing 1102 directly. The protective film can be thin enough to be neglected when considering the strength of the magnetic engagement between corresponding magnetic elements. The protective film may be unnecessary if the magnetic element 1502 is not formed of metal or if that portion of the housing 1102 which contacts the magnetic element 1502 is not metal.

[000200] The magnetic element 1502 can interact magnetically with the corresponding magnetic element 1504 on the extension of the hinge 1340. The magnetic element 1504 can have a thickness of approximately 2 mm. The magnetic interaction can create the FLUID liquid magnetic attractive force by satisfying equation (3a) in which the separation distance xsep is approximately equal to the total thickness t of housing 1102 and thickness "l" of tag 1344. The thickness "l" can be of the order of approximately 0.2 mm. Therefore, in order to minimize the xsep separation distance (and thereby increase FLUID), the magnetic element 1502 can be formed to match the inner surface 1506 of housing 1102. In addition, label 1344 and magnetic element 1504 can each be formed to match the outer surface 1508 of housing 1102. In this way, the distance between magnetic element 1502 and magnetic element 1504 can be reduced to approximately the thickness t of housing 1102 and the thickness l of the label. 1344.

[000201] In order to further improve the FLUID liquid attractive magnetic force between the magnetic elements 1502 and 1504, the magnetic derivation 1510 can be glued to and surround that portion of the magnetic element 1504 facing away from the housing 1102. The magnetic derivation 1510 can be formed of magnetically active material, such as steel or iron. The magnetically active material can redirect the magnetic flux lines that would otherwise be directed away from the magnetic element 1502 to the housing 1102, thereby increasing the density of the total magnetic flux BTOTAL between the magnetic element 1502 and the magnetic element 1504 resulting in a proportional increase in the net liquid magnetic attractive force. The magnetic branch 1510 can be glued, in turn, to the housing 1512 of the hinge extension 1340. It should be noted that in order to ensure that only the label 1344 contacts the outer surface 1508 of the housing 1102 (to avoid contact of the metal with the metal), the label 1344 is projected (that is, protrudes) from the housing 1512 of the extension of the hinge 1340 by approximately the distance "d". Nominally, the distance d can be on the order of approximately 0.1 mm.

[000202] Since the FLUID liquid magnetic force depends in part on the separation distance between the cooperating magnetic elements, the overall integrity of the magnetic union between the magnetic union system on the 1100 tablet device and the magnetic elements on the 1340 hinge extension can be affected by the actual separation distance between the cooperating magnetic elements, as well as the consistency of the separation distance along the length L of the hinge extension 1340. In order to provide a highly correlated magnetic attractive force along the extension of the hinge 1340, the separation distances between the magnetic elements in the 1340 hinge extension and those of the magnetic union system on the 1100 tablet device are well controlled.

[000203] Figure 21B shows the section view 1550 of the extension of hinge 1340 magnetically joined in housing 1102 having a flat surface. In this arrangement, tag 1344 and magnet 1554 can each conform to the flat shape of housing 1102.

[000204] In order to ensure the consistency of the net magnetic attractive force along the length L of the hinge extension 1340, the components of the hinge extension 1340 can be assembled using the artifact 1600 shown in section in figure 22A and in perspective view in figure 22B. Artifact 1600 can have surface 1602 that conforms to the shape of the outer surface of housing 1102. In order to mount the hinge extension 1340 in a manner that ensures consistent magnetic attractive force along the length L of the hinge extension 1340 (as well as providing an aesthetically pleasing appearance), tag 1344 can be temporarily joined to surface 1602 of artifact 1600. Since surface 1602 substantially conforms to the shape of outer surface 1508, tag 1344 will have a shape that is also in shape according to the shape of the outer surface 1508. In one embodiment, a partial vacuum can be created within the artifact 1600 which causes the label 1344 to join on the surface 1602 under suction. In this way, the extension of the mounted hinge can be separated from the surface 1602 simply by removing the partial vacuum.

[000205] After tag 1344 is affixed to surface 1602 of artifact 1600, magnetic element 1504 can be placed in direct contact with and joined to tag 1344 using any appropriate adhesive. In order to reduce the separation distance as much as possible, the magnetic element 1504 can have a shape that conforms to that of both labels 1344 and surface 1602. In this way, the conformal modeling of both label 1344 and the element magnetic 1504 guarantees a minimum separation distance between the magnetic elements 1506 and 1502. The magnetic element 1504 can then be glued to the magnetic branch 1510 formed of magnetically active materials such as steel to focus the magnetic flux to the magnetic element 1502. The branch metal 1510 can then be enveloped by and glued to the hinge extension housing 1512 leaving approximately d = 0.1 mm from the label 1344 protruding from the housing 1512.

[000206] In addition to providing protection for the 1100 tablet device, the 1300 segmented cover set can be manipulated to form useful support structures. In this way, figures 23 to 26 show useful provisions of the cover set 1300 according to the described modalities.

[000207] For example, as shown in figure 23, the segmented cover assembly 1300 can be folded such that the magnetically active portion of the insert 1324 interacts magnetically with the magnetic elements 1322. It should be noted that the magnetic force used to maintain the structure 1700 triangular support is in the range of 5 - 10 newtons (NT). In this way, the 1700 triangular support structure can be prevented from opening inadvertently. The 1700 triangular support structure can be formed to be used in many ways to enlarge the 1100 tablet device. For example, the 1700 triangular support structure can be used to support the 1100 tablet device in such a way that the surface sensitive to touch 1702 is positioned in relation to a support surface at an ergonomically advantageous angle. In this way, the use of the 1702 touch-sensitive surface can be a pleasant experience for the user. This is particularly relevant in those situations where the touch sensitive surface is used over an extended period of time. For example, a virtual keyboard can be displayed on the 1702 touch sensitive surface. The virtual keyboard can be used to enter data into the 1100 tablet device. By using the 1700 triangular support structure to support the 1100 tablet device at the ergonomically pleasing angle , the harmful effects of repetitive movements can be reduced or even eliminated.

[000208] Figures 24A and 24B show another folded implementation of the segmented cover assembly 1300 in which the triangular support structure 1700 can be used to support the tablet device 1100 in a viewing state. By visualization state, it is planned that the visual content (visual aids, still life, animation, etc.) can be presented at a pleasant angle for the observer, approximately 75 ° from the horizontal. In this "rest" state, visual content can be presented for easy viewing. A visible area of the 1100 tablet device can be displayed at an angle of approximately 75 ° which has been found to be within a range of viewing angles considered optimal for a good viewing experience.

[000209] Figures 25A-25B show the segmented cover set 1300 folded in various suspension modes. For suspension modalities, it is planned that by folding the segmented cover assembly 1300 into an appropriate triangular shape, the tablet device 1100 can be suspended from above as shown in figure 26A in the form of the suspension 1900. The suspension 1900 can be used to suspend the 1100 tablet device from above. For example, the 1900 hanger can be suspended directly from the ceiling using a support piece such as a rod. The hanger 1900 can be created simply by folding the segmented cover assembly 1300 in a first direction until embedded magnets 1322 magnetically engage the magnetically active insert 1324 which can be formed of steel or iron. The magnetic circuit formed by engaging the embedded magnets 1322 and magnetically active insert 1324 can provide sufficient support to safely suspend the tablet device 1100 from any horizontally aligned support structure.

[000210] Figure 25B shows modalities of suspender suitable for suspending the tablet device 1100 from a vertically aligned support structure such as a wall. In particular, the hanger 1910 can be mechanically joined to a wall or other vertical support structure. The 1910 hanger can then be used to suspend the 1100 tablet device along the lines of a wall bezel. In this way, the 1100 tablet device can be used to present visual content along the lines of a visual display for visual content, or wall hanging for still images such as photos, artwork and so on.

[000211] Figures 26A - 26B show the arrangement 2000 where the triangular support structure 1700 can be used as a handle. Again by folding the segmented cover assembly 1300, such that segmented portions interact to form the triangular support structure that can be used as a handle. As such, the 1100 tablet device can be held as one would hold a book for viewing. The body of the segmented cover assembly 1300 can provide convenient holding aspects that can be used to more securely hold the 1700 triangular support structure when used to hold the 1100 tablet device like a book.

[000212] In those cases where the 1100 tablet device includes image capture devices, such as a forward facing camera 2002 and rear facing camera 2004, the visual content can be presented by the 1100 tablet device. In this way, the structure 1700 triangular support can be used as a carrier along the lines of a camera grip. As such, the 1700 triangular support structure can provide a convenient and effective mechanism to assist in the image capture process. For example, when used to capture images, the 1100 tablet device can be held securely through the 1700 triangular support structure and the rear-facing camera 2004 can be pointed at an object. The image of the object can then be displayed by the tablet device 1100 on the display shown in figure 25B. In this way, both the 2002 forward facing camera and / or the 2204 rear facing camera can be used to capture still images or video such as in a video conversation or simply watching a video presentation. As part of a video conversation, a video conversation participant can easily continue a video conversation while using the 1700 triangular support structure to hold the 1100 tablet device.

[000213] Figures 27A - 27C show the configuration 2100 of the cover assembly 1300 and tablet device 1100 illustrating what is referred to as a mode of peeking operation of the tablet device 1100. More particularly, when the segment 1304 is lifted from the glass cover 1106, sensors on the tablet device 1100 can detect that segment 1304 and only that segment has been lifted from the glass layer 1106. Once detected, the tablet device 1100 can activate only the exposed portion 2102 of the display. For example, the 1100 tablet device can use a Hall Effect sensor to detect that segment 1304 has been lifted from glass cover 1106. Additional sensors, such as optical sensors, can then detect whether only segment 1304 has been lifted or if segments additional issues have been raised.

[000214] As shown in figure 27B, when the tablet device 1100 determines that only segment 1304 is lifted, then the tablet device 1100 may change the operating state to the "lurking" state in which only the exposed portion 2102 of the display actively displays visual content in the form of icons 2104. Therefore, information in the form of visual content, such as time of day, notes and so on can be displayed for viewing on only that visible portion of the display. After the sensors detect that the segment 1304 has been placed back in the glass layer 1106, the tablet 1100 can return to the previous operational state, such as a standby state. In addition, in another mode, when an icon arranged to respond to a touch is displayed, then that portion of a touch-sensitive layer corresponding to the visible portion of the display can also be activated.

[000215] In addition, as shown in figure 27C, when additional segments are lifted from the cover glass 1106 to further expose the second portion 2106 of the cover glass 1106, the second portion 2106 of the display can be activated. In this way, in the "extended" peeking mode, additional visual information, such as icons 2108, can be displayed in the activated portions of the display. It should be noted that as the segments are lifted from the cover glass 1106, additional segments of the display can be activated. In this way, an extended way of respecting can be provided.

[000216] Alternatively, the 1100 tablet device can respond to signals from the Hall Effect sensors (s) simply by energizing the display when the flap is moved away from the display and turning off (standby) when the display is covered by the flap. In one embodiment, a subset of magnetic elements 1322 can be used in conjunction with corresponding magnetic elements 402 in the joint feature 110 to secure the cover assembly 1300 to the tablet device 1100 on the cover glass 1106. In addition, at least the magnet 1326 can be used to magnetically activate the sensitive circuit 404. For example, when segmented cover 1300 is placed over tablet device 1100 on cover glass 1106, the magnetic field of magnet 1326 can be detected by the magnetically sensitive circuit 404 which it can take the form of a Hall Effect sensor. The detection of the magnetic field can cause the Hall Effect 118 sensor to generate a signal that can result in a change in the operating state of the 1100 tablet device.

[000217] For example, when the Hall Effect sensor 118 detects that the segmented cover 1300 is in contact with the cover glass 1106 indicating that the display is not visible, then the signal sent by the Hall Effect sensor 118 can be interpreted by a processor on the 1100 tablet device to change the current operating state to the standby state. On the other hand, when the segment 1304 is lifted from the cover glass 1106, the Hall Effect sensor 118 can respond to the removal of the magnetic field from the magnetic 1326 by sending another signal to the processor. The processor can interpret this signal again by changing the current operating state. The change may include changing the operating state from the standby state to an active state. In another modality, the processor can interpret the signal sent by the Hall Effect sensor 118 in conjunction with other sensors by changing the operating status of the 1100 tablet device to the lurking mode in which only that portion of the display is exposed by raising segment 1304 is enabled and able to display visual content and / or receive (or send) tactile entries.

[000218] In some cases, when the segment 1306 is lifted from the cover glass 1106 at the same time that the Hall Effect sensor 118 indicates that the 1304 segment is also lifted, the presence of the sensors in addition to the Hall Effect sensor 118 can cause the processor to enter an extended lurking mode in which additional display features corresponding to the additional exposed portion of the display are also activated. For example, if the tablet device 1100 includes other sensors (such as optical sensors) that can detect the presence of a particular segment, then the signals from the Hall Effect sensor 118 in combination with other sensor signals can provide an indication for the processor that a particular portion or portions of the display assembly are currently visible and can thus be enabled to display visual content.

[000219] Figure 28A shows the cover set 2200 according to a particular modality. Cover assembly 2200 may include segmented cover 2202 joined to pivoting assembly 2204 shown in an exploded view. The pivoting assembly 2204 can include end ears 2206 and 2208 hingedly connected to each other by means of hinge extension 2210 and connecting rod 2212 (which can be wrapped within sleeve 2214 which can in turn be connected to or wrapped within segmented cover 2202 and not seen). In this way, at least two pivot lines 2216 and 2218 can be provided to pivot end ears 2206 and 2208, hinge extension 2210 and connecting rod 2212. For example, hinge extension 2210 (and end ears 2206 and 2208 ) can pivot around pivot line 2216, while connecting rod 2212 (and end ears 2206 and 2208) can pivot around pivot line 2218. It should be noted that connecting rod 2212 and hinge extension 2210 can pivot independently one on the other. The articulation can occur at the same time or at different times providing the pivoting assembly 2204 with at least four independent directions of axial rotation.

[000220] In order to prevent metal-to-metal contact when the hinge extension 2210 is magnetically coupled to the tablet 1100, the label 2220 can be affixed to an external surface of the hinge extension 2210 and dampers 2222 can be affixed to a surface of the end ears 2206 and 2208. Tag 2220 and buffer 2222 may be formed of material that can suffer repeated contact with housing 102 without ruining or otherwise damaging the appearance of housing 102. Thus, label 2220 and shock absorbers 2222 can be formed of paper, cloth, plastic and adhered to the hinge extension 2210 and end ears 2206 and 2208 using an adhesive, such as glue. In some cases, the adhesive may have properties that provide easy replacement of the 2220 tag and / or 2222 buffers when necessary.

[000221] Figure 28B shows an assembled embodiment of pivot assembly 2204 showing pivot line 2216 around which end ears 2206, 2208 and connecting rod 2212 (in sleeve 2214) can rotate in two axial directions (ie, in the direction clockwise and counterclockwise). It should be noted that the end ears 2206, 2208 and the hinge extension 2210 can rotate in two axial directions (that is, clockwise and counterclockwise) with respect to the pivot line 2218. In this way, the end ears 2206 and 2208 can rotate around pivot line 2216 and pivot line 2218 with a total of four axial directions.

[000222] Figure 28C shows the hinge extension 2210 illustrating in more detail the end pins 2224 and 2226 that can be used to mount the hinge extension 2210 on the end ear 2206 and end ear 2208, respectively. Although not visible in this figure, end pins 2224 and 2226 can still be used in conjunction with internal plugs to secure the end unit magnetic elements embedded within the hinge extension 2210. This is particularly useful in those situations where the encoded magnetic sequence of Magnetic elements incorporated within the hinge extension 2210 cause the single end magnetic elements to magnetically repel the adjacent magnetic element.

[000223] Figure 28D shows an exploded view of the hinge extension 2210 according to the described modalities. The 2228 magnetic elements can be configured as an encoded magnetic structure in which individual magnetic elements can be arranged in a specific pattern of magnetic polarity, intensity, size and so on. In the modality shown, those magnets close to each other having anti-aligned polarity can count on their mutual magnetic attraction to maintain their position with the encoded magnetic structure. However, magnetic elements placed close together with aligned magnetic polarity may require an external force to overcome the mutual magnetic repulsive force in order to maintain their position within the encoded magnetic structure. For example, the magnetic elements 2228-1 and 2228-2 can each be formed of two magnets having aligned magnetic poles. In this situation, each of the two magnets that form the magnetic element 2228-1 (and 2228-2), for example, will have magnetic poles that are aligned and, therefore, will generate a liquid magnetic repulsive force between them. Therefore, an externally applied constraint can be applied using, for example, plugs 2232-1 and 2232-2, respectively. The magnetic attractive force provided by magnets 2228-3 and 2228-4 (which are anti-aligned with respect to magnets 2228-1 and 2228-2, respectively) can help to stabilize the encoded magnetic structure involved within the extension of the hinge 2210. The spacer 2234 formed of magnetically inert material can be used to provide additional physical integrity for the encoded magnetic structure formed by the 2228 magnetic elements.

[000224] In order to improve the overall net magnetic attractive force, the magnetic derivation 2236 formed of the magnetically active material such as steel can be adhesively joined at a rear end of the magnetic elements 2228. Placement of the posterior end of the 2236 derivation can help redirect magnetic field lines that would otherwise propagate away from the engaging surface between hinge extension 2210 and housing 1102. By deviating the magnetic field lines back to the engaging surface, the density of the magnetic flux provided by the magnetic elements 2228 on the engagement surface it can be increased proportionally resulting in an increased net magnetic attractive force between the magnetic elements 2228 and the corresponding magnetic components within the housing 1102.

[000225] As previously discussed, the label 2220 can be bonded adhesively to the magnetic elements 2228 (and spacer 2234, if present) which in turn can be bonded together in the magnetic tap 2236. The magnetic tap 2236 can be taped together in the opening 2238 on the extension of hinge 2210 leaving the label 2220 projected for approximately a distance "d" which can be in the order of approximately 0.1 - 0.2 mm preventing the contact of the metal in the metal between the extension of the hinge 2210 and the housing 1102.

[000226] It should be noted that in the keyboard layout and the display layout, the hinge extension 2210 may experience a shear force due to the placement of the 1100 tablet device on an angled support surface. The shear force can be counteracted by the attractive net magnetic force generated between the extension of the hinge 2210 and the bonding feature of the 1100 tablet device.

[000227] Figure 29 shows an exploded view of the segmented cover 2202. The bottom layer 2250 can come in direct contact with a protected surface, such as a cover glass for a dial. The bottom layer 2250 can be formed of a material that can passively clean the protected surface. The material can be, for example, a microfiber material. The lower layer 2250 can be joined to the reinforcement layer 2252 formed from the resilient material, such as plastic. Reinforcement layer 2252 can in turn be adhesively joined to inserts 2254 to form a laminate structure including adhesive layer 2256, laminated material 2258 and insert 2254. Some of the inserts 2254 can accommodate embedded components. For example, insert 2254-1 can accommodate magnets 2260, some of which can cooperate with the corresponding joint feature 110 built into the tablet device 1100 to secure segmented cover 2202 on the tablet device 1100. At least one magnet 2260- 1 can be positioned and sized to interact with a magnetically sensitive circuit (such as a Hall Effect sensor) embedded within the 1100 tablet device. It should be noted that while some of the 2260 magnets are specifically allocated to interact only with the bonding feature 110, substantially all magnets 2260 can interact magnetically with the magnetically active plate 2262 embedded in segment 2254-2 used to form various triangular support structures. In this way, a strong magnetic force can be generated providing a stable foundation for the triangular support structure.

[000228] An additional laminate structure can be formed of adhesive layer (s) 2256, laminate material 2258 and top layer 2264. In some embodiments, an intermediate layer of material can be provided having an interlaced structure which can assist in the union of the upper layer 2264. The upper layer 2264 can be formed of many materials, such as plastic, leather and so on preserving the overall appearance and impression of the 1100 tablet device. In order to provide additional structural support, the upper layer 2264 may have edges reinforced by reinforcement bars 2266 which may be formed of plastic or other rigid or semi-rigid material.

[000229] Figure 30 shows a partial sectional view of the segmented cover 2200 shown in figure 29 placed in position on the cover layer 1106 of the tablet device 1100. Of particular note is the relative positioning of the 2260-1 magnet and sensor. Hall Effect 118. Thus, when segmented coverage 2200 is placed over cover layer 1106, the magnetic field of magnet 2260-1 can interact with the Hall Effect sensor 118 which can respond by generating a signal. The signal can be processed, in turn, in such a way that the operating status of the tablet device 1100 can change according to the presence of the cover 2200. On the other hand, removing the cover 2200 can cause the operational state revert to the previous operational state or another operational state such as lurking mode. It should be noted that the density of the magnetic field between the magnetic element 2260-1 and the Hall Effect sensor 118 can be of the order of approximately 500 Gauss. However, in these modalities where the cover 2202 is moved to the rear of the housing 1102, the density of the magnetic flux in the Hall Effect sensor 118 can be of the order of approximately 5 Gauss.

[000230] Figure 31A shows the sectional view of the hinge extension 2210 in active engagement with the joining feature of the device 2300 incorporated in the tablet device 1100. In particular, the magnetic joining feature 2300 includes at least the magnetic element 2302 forming a magnetic circuit with the magnetic element 2228 (which is part of the encoded magnetic structure incorporated in the extension of the hinge 2210). The magnetic derivation 2304 can be used to redirect the magnetic field lines that propagate from the magnetic element 2302 in a different direction from that of the magnetic element 2228. In this way, the density of the magnetic flux on the engaging surface 2306 can be increased proportionally, shape by increasing the liquid net magnetic attractive force. The magnetic coupling feature 2300 can be incorporated into cylinder 2308 in housing 1102 dimensioned to accommodate both magnetic element 2302 and branch 2304. In the described embodiment, cylinder 2308 can provide support for magnetic element 2302 and branch 2304. The cylinder 2308 it can also direct the movement of the magnetic element 2302 and lead 2304 when the magnetic union feature 2300 transits between the active state and the inactive states.

[000231] In order to ensure that the FLUID net attractive force is applied substantially normal to the engagement surface 2306, the magnetization of the magnetic element 2228 and the magnet element 2302 can be configured, such that their respective magnetization vectors substantially align . By magnetization it is planned that the magnets can be manufactured having magnetic domains that are substantially aligned in the same direction. By aligning the magnetization vectors M1 and M2 of the magnetic element 2302 and magnetic element 2228, respectively, the FLUID liquid magnetic force can be generated substantially normal to the engaging surface 2306.

[000232] Figure 31B shows the magnetic union feature 2300 in an inactive state. When in the inactive state, the magnetic union feature 2300 is located at least at a distance x0 from the outer surface of the housing 1102 in order to satisfy equation (1). Therefore, cylinder 2308 needs to be able to accommodate the movement of magnetic element 2302 and derivation 2304 from x = 0 in the inactive state to approximately x = x0 in the active state.

[000233] Figure 32 shows a representation of an embodiment of the coupling device of the device 108 in the form of the coupling resource 2400. In particular, the coupling 2400 may include magnetic elements 2402 / branch 2404 joined to the spring in leaves 2406. The spring in sheets 2406 can be fastened directly to branch 2404 by means of fasteners 2408 and end supports 2410 by means of fasteners 2412. End supports 2410 can be joined in a support structure, such as a housing to provide support for the resource coupling 2400. In one embodiment, alignment columns 2414 can be used during assembly to provide alignment for both end supports 2410 and the leaf spring 2406. Figure 33 shows a close view of the interface of the support structure 2410 / spring in leaves 2406.

[000234] Figure 34 shows a flow chart detailing a 2500 process according to the described modalities. The process can start at 2502 by providing a first magnetic union feature encoded in an inactive state. In 2504, using a second magnetic union feature to activate the first encoded magnetic union feature. In 2506, causing a magnetic field of the first activated magnetic union to interact with a magnetic field of the second magnetic union feature. In 2508, generating a net magnetic bonding force according to the interaction of the magnetic fields. In 2510, magnetically connecting the first and second magnetic bonding features according to the net magnetic bonding strength.

[000235] Figure 35 shows a flow chart detailing the 2600 process according to the described modalities. The 2600 process can start at 2602 by providing a magnetic union feature encoded in an inactive state. In the inactive state, the density of the magnetic flux at a predetermined distance for magnetic elements in the encoded magnetic union feature is less than a threshold value. In 2604, an external magnetic field is received at the encoded magnetic union feature. In 2606, if it is determined that the external magnetic field corresponds with the magnetic elements that correlate with the magnetic elements in the encoded magnetic union feature, then in 2608, the encoded magnetic union feature is activated, otherwise, the 2600 process ends.

[000236] Figure 36 shows a flow chart detailing the 2700 process according to the described modalities. The 2700 process can begin in 2702 by placing an electronic device having a first and an accessory having second encoded magnetic coupling capabilities in close proximity to each other. In 2704, if the magnetic elements in the first and second encoded magnetic union features correlate, then in 2706, the first encoded magnetic union feature is activated. When the first encoded magnetic union feature is activated, then the density of the magnetic flux from a magnetic field generated by the first encoded magnetic union feature increases to a value above a threshold. The interaction of the magnetic field between the magnetic elements in the first and second magnetic bonding features causes the electronic device and the accessory to magnetically unite in 2708.

[000237] Figure 37 shows a flowchart detailing a process in the 2800 lurking mode according to the described modalities. The 2800 process can start at 2802 by determining whether a first portion of a dial is uncovered. By discovery it is planned that the visual content presented in the first portion can be seen. When it is determined that the first portion of the display is uncovered, then in 2804, only that portion of the display that was considered to be uncovered can present the visual content. In other words, a set of icons or other visual content can be displayed in the uncovered portion of the display, where the rest of the display can remain blank or off. Next in 2806, the visual content is displayed by the activated portion of the display. Next in 2808, a determination is made as to whether a second portion of the display is uncovered, the second portion being different from the first portion. When it is determined that the second portion of the display is uncovered, then a second portion of the display is activated in 2810. The visual content is then displayed in the second portion activated in 2812.

[000238] Figure 38 shows a flowchart detailing the 2900 process to form a magnetic cell incorporated in the extension of the hinge 1340 according to the described modalities. The 2900 process for forming the magnetic cell incorporated in the extension of the hinge 1340 can start in 2902 providing an artifact. The artifact having a shape according to the outer shape of the housing that defines the electronic device on which the hinge extension will magnetically join. The artifact can also be connected to a vacuum source that can be used to subsequently secure a protective film at 2904. The protective film can be used to provide protection against metal-to-metal contact between the hinge extension and the housing. electronic device. The protective film (also referred to as a label) can be formed of resilient material and have a length consistent with that of the hinge extension. After the label has been attached to the artifact using a vacuum, the label takes the shape of the outline of the artifact and thus the shape of the housing of the electronic device.

[000239] In 2906, a magnet is attached to the label on a first surface formed to conform to the artifact (and the housing). In one embodiment, the label and magnet can be glued together using adhesive. In another embodiment, the label may have an internal adhesive layer impregnated with glue that can bond the label on the magnet with the cure. In 2908, a magnetic lead is glued to the magnet and label assembly. The magnetic tap may be formed of magnetically active material such as steel. The magnetic tap can interact with these lines of the magnet's magnetic field initially directed away from the engaging surface between the housing and the hinge extension. The magnetic tap can interact with the magnetic field lines by redirecting at least some of the magnetic field lines in one direction towards the magnet and the engaging surface. The redirected magnetic field lines can increase the density of the magnetic flux on the coupling surface, thereby increasing the net attractive magnetic force between the magnetic elements in the electronic device and the extension of the hinge.

[000240] In 2910, a hinge extension housing can be glued to the magnetic tap. The hinge extension housing can be used to support and protect the magnetic elements used to magnetically attach the hinge extension to the electronic device. It should be noted that after joining the hinge extension casing, the label is projected from the hinge extension casing so it is planned that the label protrudes at a distance "d" from the hinge extension casing. In this way, there is no contact between the metal hinge extension housing and the metal housing of the electronic device.

[000241] Figure 39 shows a flow chart detailing the 3000 process to determine a configuration of the magnetic elements in a magnetic cell used in a magnetic union system according to the described modalities. The process 3000 begins in 3002 providing a first plurality of magnetic elements according to a first configuration. In 3004, a second plurality of the magnetic elements according to a second configuration is provided. By first and second configurations, what is planned is that the first and second pluralities of magnetic elements can be arranged in any manner deemed appropriate. For example, the first and second configurations can relate to a physical size, a magnetic polarity, a magnetic intensity, a relative position with respect to other magnetic elements, and so on. Then, in 3006, a net magnetic force is created in a modality by positioning each of the first and second pluralities of magnetic elements with respect to each other. In doing so, those corresponding magnetic elements having the same polarity will generate a negative (repulsive) magnetic force whereas those corresponding magnetic elements having opposite polarities will generate a positive (attractive) magnetic force. In 3008, the total value of the net magnetic force for each corresponding first and second plurality of magnetic elements is determined. As mentioned above, since some magnetic elements can generate a negative magnetic force while others a positive magnetic force for the same position, the total value of the net magnetic force can be positive, negative or zero (indicating that the positive and negative magnetic forces cancel themselves not producing the general net magnetic force).

[000242] In 3010, the difference between a global maximum net total magnetic force and the first local maximum net total magnetic force is determined. For example, as shown in figure 13, the global maximum corresponds to a total net magnetic force of approximately 8A ("A" being a unitary magnetic attractive force where "8A" is equivalent to "+8" where "+" indicates attractive force ). Furthermore, a first local maximum net total value is approximately 4A and a second local maximum net total value is approximately 1A. In order to avoid a "false activation" that can result in a weak magnetic attraction, the difference between the global maximum net total magnetic force and the first local maximum net total magnetic force may indicate a probability that the magnetic union system will balance in the force global maximum net total magnetic force (representing the strongest net magnetic attraction) and the first local maximum net total magnetic force (representing a weak net magnetic attraction).

[000243] Therefore, if in 3012, the difference is acceptable (meaning that the global maximum is the probable equilibrium point), then the 3000 process for, otherwise, the configuration of the magnetic elements is changed in 3014 and the control is passed directly to 3006 for further evaluation.

[000244] Figure 40 is a block diagram of an arrangement 3100 of the functional modules used by an electronic device. The electronic device can be, for example, the tablet device 1100. The provision 3100 includes an electronic device 3102 that is capable of releasing media to a user of the portable media device, but also storing and retrieving data with respect to data storage 3104. The 3100 layout also includes a 3106 graphical user interface (GUI) manager. The 3106 GUI manager operates to control the information being provided for and displayed on a display device. The 3100 arrangement also includes a 3108 communication module that facilitates communication between the portable media device and an accessory device. In addition, the 3100 arrangement includes a 3110 accessory manager that operates to authenticate and acquire data from an accessory device that can be attached to the portable media device.

[000245] Figure 41 is a block diagram of an electronic device 3150 suitable for use with the described modalities. Electronic device 3150 illustrates the circuitry of a representative computing device. The 3150 electronic device includes a 3152 processor that belongs to a microprocessor or controller to control the overall operation of the 3150 electronic device. The 3150 electronic device stores the media data pertaining to the media items in a 3154 file system and a 3156 cache. The 3154 file system is typically a storage disk or a plurality of disks. The 3154 file system typically provides high capacity storage capacity for the 3150 electronic device. However, since the access time for the 3154 file system is relatively slow, the 3150 electronic device can also include a 3156 cache. The cache 3156 is, for example, random access memory (RAM) provided by semiconductor memory. The access time for the 3156 cache is substantially shorter than for the 3154 file system. However, the 3156 cache does not have the large storage capacity of the 3154 file system. In addition, the 3154 file system, when active, consumes more power than the 3156 cache. Power consumption is often a concern when the 3150 electronic device is a portable media device that is powered by a 3174 battery. The 3150 electronic device may also include a 3170 RAM and memory read (ROM) 3172. ROM 3172 can store programs, utilities or processes to be executed in a non-volatile manner. RAM 3170 provides storage for volatile data, just as for the 3156 cache.

[000246] The 3150 electronic device also includes a user input device that allows a 3150 electronic device user to interact with the 3150 electronic device. For example, the 3158 user input device can take a variety of forms, such as one button, key base, dialer, touch screen, audio input interface, image / visual capture input interface, input in the form of sensor data, etc. In addition, the electronic device 3150 includes a display 3160 (screen display) that can be controlled by the processor 3152 to display the information to the user. A 3166 data bus can facilitate data transfer between at least the 3154 file system, the 3156 cache, the 3152 processor and the CODEC 3163.

[000247] In one embodiment, the 3150 electronic device serves to store a plurality of media items (for example, songs, "podcasts" etc.) in the 3154 file system. When a user wants the electronic device to play an item of private media, a list of available media items is displayed on the 3160 display. Then, using the 3158 user input device, a user can select one of the available media items. The 3152 processor, upon receiving a selection from a particular media item, provides the media data (for example, audio file) for the particular media item to an encoder / decoder (CODEC) 3163. CODEC 3163 then produces signals analog outputs to a 3164 speaker. The 3164 speaker can be a speaker internal to the 3150 electronic device or external to the 3150 electronic device. For example, headsets or headphones that connect to the 3150 electronic device would be considered an external speaker.

[000248] The 3150 electronic device also includes a 3161 network / bus interface that couples to a 3162 data connection. The 3162 data connection allows the 3150 electronic device to dock with a host computer or accessory devices. The 3162 data connection can be provided via a wired connection or a wireless connection. In the case of a wireless connection, the 3161 network / bus interface can include a wireless transceiver. Media items (media assets) can belong to one or more different types of media content. In one embodiment, the media items are audio tracks (for example, songs, audio books and "podcasts"). In another modality, the media items are images (for example, photos). However, in other modalities, media items can be any combination of audio, graphic or visual content. The 3176 sensor can take the form of the circuitry to detect any number of stimuli. For example, the 3176 sensor may include a Hall Effect sensor responsive to the external magnetic field, an audio sensor, a light sensor, such as a photometer and so on.

[000249] Figure 39 is a block diagram of an array 3000 of the functional modules used by an electronic device. The electronic device can be, for example, the 1100 tablet device. The provision 3000 includes an electronic device 3002 that is capable of releasing media to a user of the portable media device, but also storing and retrieving data with respect to data storage 3004. The provision 3000 also includes a 3006 graphical user interface (GUI) manager. The 3006 GUI manager operates to control the information being provided for and displayed on a display device. The 3000 arrangement also includes a communication module 3008 that facilitates communication between the portable media device and an accessory device. In addition, the provision 3000 includes an accessory manager 3010 that operates to authenticate and acquire data from an accessory device that can be attached to the portable media device.

[000250] Figure 40 is a block diagram of an electronic device 3050 suitable for use with the described modalities. Electronic device 3050 illustrates the circuitry of a representative computing device. The 3050 electronic device includes a 3052 processor that belongs to a microprocessor or controller to control the overall operation of the 3050 electronic device. The 3050 electronic device stores the media data pertaining to the media items in a 3054 file system and a 3056 cache. The 3054 file system is typically a storage disk or a plurality of disks. The 3054 file system typically provides high capacity storage capacity for the 3050 electronic device. However, since the access time for the 3054 file system is relatively slow, the 3050 electronic device can also include a 3056 cache. The cache 3056 is, for example, random access memory (RAM) provided by semiconductor memory. The access time for the 3056 cache is substantially shorter than for the 3054 file system. However, the 3056 cache does not have the large storage capacity of the 3054 file system. In addition, the 3054 file system, when active, consumes more power than the 3056 cache. Power consumption is often a concern when the 3050 electronic device is a portable media device that is powered by a 3074 battery. The 3050 electronic device may also include a 3070 RAM and memory read (ROM) 3072. ROM 3072 can store programs, utilities or processes to be executed in a non-volatile manner. RAM 3070 provides volatile data storage, just as for the 3056 cache.

[000251] The 3050 electronic device also includes a 3058 user input device that allows a 3050 electronic device user to interact with the 3050 electronic device. For example, the 3058 user input device can take a variety of forms, such as such as a button, key base, dialer, touch screen, audio input interface, image / visual capture input interface, input in the form of sensor data, etc. In addition, the electronic device 3050 includes a display 3060 (screen display) that can be controlled by the processor 3052 to display the information to the user. A 3066 data bus can facilitate data transfer between at least the 3054 file system, the 3056 cache, the 3052 processor, and the CODEC 3063.

[000252] In one embodiment, the electronic device 3050 serves to store a plurality of media items (for example, songs, "podcasts" (NT: a multimedia file, such as a radio program or music video, which can downloaded from the internet and played on an mp3 or similar piece of equipment), etc.) in the 3054 file system. When a user wants the electronic device to play a particular media item, a list of available media items is displayed on the display 3060. Then, using the 3058 user input device, a user can select one of the available media items. The 3052 processor, upon receiving a selection from a particular media item, provides the media data (for example, audio file) for the particular media item to a 3063 encoder / decoder (CODEC). CODEC 3063 then produces signals analog outputs to a 3064 speaker. The 3064 speaker can be a speaker internal to the 3050 electronic device or external to the 3050 electronic device. For example, headsets or headphones that connect to the 3050 electronic device would be considered an external speaker.

[000253] The 3050 electronic device also includes a 3061 network / bus interface that couples to a 3062 data connection. The 3062 data connection allows the 3050 electronic device to dock with a host computer or accessory devices. The 3062 data connection can be provided via a wired connection or a wireless connection. In the case of a wireless connection, the 3061 network / bus interface can include a wireless transceiver. Media items (media assets) can belong to one or more different types of media content. In one embodiment, the media items are audio tracks (for example, songs, audio books and "podcasts"). In another modality, the media items are images (for example, photos). However, in other modalities, media items can be any combination of audio, graphic or visual content. The 3076 sensor can take the form of the circuitry to detect any number of stimuli. For example, the 3076 sensor may include a Hall Effect sensor responsive to the external magnetic field, an audio sensor, a light sensor, such as a photometer and so on.

[000254] The magnetic union feature can be used to magnetically join at least two objects. Objects can take many forms and perform many functions. When magnetically joined together, objects can communicate and interact to form a cooperative system. The cooperative system can perform operations and provide functions that cannot be provided by the separate objects individually. For example, at least a first object and a second object can be magnetically joined together, such that the first object can be configured to provide a support mechanism for the second object. The support mechanism can be mechanical in nature. For example, the first object can take the form of a platform that can be used to support the second object on a work surface such as a table. In another example, the first object may take the form of a suspension device. As such, the first object can be used to suspend the second object which can then be used as a display to display visual content such as a visual resource, still images such as an image, illustrations and so on. The support mechanism can also be used as a handle to conveniently hold or hold the second object. This arrangement can be particularly useful when the second object can present visual content such as images (still or visual), text (as in an e-book) or have image capture capabilities in which case the second object can be used as an image capture device such as a photographic or visual camera and the first object can be configured to act as a support, such as a tripod or grip.

[000255] The modalities described can take many forms. For example, the union can occur between a first and a second object where the first object and the second object can take the form of electronic devices. Electronic devices can be magnetically joined together to form a cooperative electronic system in which electronic devices can communicate. As part of this communication, information can be passed between the first and second electronic devices. The information can be processed in whole or in part on the first or second electronic device depending on the nature of the processing. In this way, the cooperative electronic system can take advantage of the synergistic effect of having multiple electronic devices magnetically united and in communication with each other. In an implementation, communication can be performed wirelessly using any suitable wireless communication protocol, such as Bluetooth (BT), GSM, CDMA, WiFi and so on.

[000256] The cooperative electronic system can take the form of a formation of electronic devices. In one embodiment, the formation of electronic devices can act as a single, unified display (along the lines of a mosaic). In another embodiment, the formation of electronic devices can provide a single or a set of functions (such as a virtual keyboard). In yet another embodiment, at least one of the electronic devices can take the form of a power supply device that can be joined to the electronic device using the magnetic union feature. The power supply device may use a mechanical connection, such as a power port, or in some cases, a magnetically based charging mechanism to supply current to the electronic device. The current can be used to charge a battery if necessary while providing power to operate the cooperative electronics. The power provided can be passed from one device to another as in a bucket brigade to level the power distribution and battery charge levels in the cooperative electronics.

[000257] The accessory unit includes an accessory body and a magnetic assembly hingedly connected to the accessory body which includes a first plurality of magnetic elements arranged adjacent to each other in a first order of relative size along a first line and arranged according to a first polarity pattern of alternating magnetic polarities and a second plurality of magnetic elements arranged adjacent to each other in a second order of relative size along the first line and according to a second polarity pattern of alternating magnetic polarities, in which the magnetic assembly it is arranged to magnetically attach the accessory unit to a first part of a host unit. The first and second orders of size and the first and second polarity patterns are complementary to each other. The first polarity pattern is {P1, P2, P1} and where the second polarity pattern is {P2, P1, P2}, where P1 is a first polarity and P2 is an opposite polarity. The first order of relative size is {2L, 1L, 1L} and where the second order of relative size is {1L, 1L, 2L}, where 1L is an effective length of the unit magnet and 2L is approximately twice the length effective of the unitary magnet. A 2L magnetic element comprises a configuration of a first 1L magnetic element having the first P1 polarity adjacent to a second 1L magnet having the first P1 polarity, wherein the first 1L magnet and the adjacent 1L second magnet are held together against a mutual repulsive magnetic force by an externally applied force. The magnetic assembly further comprises a housing having a front opening and a magnetic lead included in the housing and joined in a rear portion of the first and second pluralities of magnetic elements, the magnetic lead arranged to redirect at least some lines of the magnetic field away from the side rear of the housing and to the front opening, thereby increasing the density of the magnetic flux between the first and the second pluralities of magnetic elements and a corresponding magnetic element in the host unit. A first end plug is inserted into a first end of the magnetic lead and a second end plug is inserted into a second end of the magnetic lead, where the first and second end plugs provide the externally applied force used to maintain the configuration of the 2L magnetic element, where adjacent magnetic elements having opposite magnet polarities are held together by a mutually attractive magnetic force.

[000258] The magnetic assembly also includes a first end ear hingedly connected at one end of the housing, a second end ear hingedly connected at an opposite end of the housing, where the first and second end ears and the housing hinge to the around a first pivot line, a rigid connecting rod connecting the first and second end ears and a collar sized to accommodate the rigid connecting rod, the collar and the rigid connecting rod inserted into an opening in the accessory body, the rigid connecting rod forming a second line pivot different from the first pivot line around which the first and second end ears and the housing articulate. The accessory body comprises a segmented flap portion having a plurality of segments where an outermost segmented portion includes a first magnetic element that cooperates with the magnetic assembly to magnetically join the segmented flap portion to a second part of the host unit separate from the first part , wherein the segmented flap portion has a size and shape according to the second part of the host unit. The first magnetic element comprises: a plurality of magnetic components. The second part of the host unit is a display device having a topmost protective layer.

[000259] A method of forming an accessory unit, which comprises: providing an accessory body; provide a pivoting magnetic assembly and connect the pivoting magnetic assembly to the accessory body comprising: a first plurality of magnetic elements arranged adjacent to each other in a first order of relative size along a first line and arranged according to a first polarity pattern of alternating magnetic polarities and a second plurality of magnetic elements arranged adjacent to each other in a second order of relative size along the first line and according to a second polarity pattern of alternating magnetic polarities, in which the magnetic assembly is arranged to magnetically join the accessory unit in a first part of a host unit. The first and second size orders and the first and second polarity patterns are complementary to each other, the first polarity pattern is {P1, P2, P1} and the second polarity pattern is {P2, P1, P2 }, where P1 is a first polarity and P2 is an opposite polarity and the first order of relative size is {2L, 1L, 1L} and where the second order of relative size is {1L, 1L, 2L}, where 1L is an effective length of the unitary magnet and 2L is approximately twice the effective length of the unitary magnet and a magnetic element of 2L comprises a configuration of a first magnetic element of 1L having the first polarity P1 adjacent to a second magnet of 1L having the first polarity P1, in which the first 1L magnet and the second adjacent 1L magnet are held together against a mutual repulsive magnetic force by an externally applied force.

[000260] The formation of the magnetic assembly providing a housing having a frontal opening, including a magnetic derivation in the housing, joining the magnetic derivation in a rear portion of the first and second pluralities of magnetic elements, the magnetic derivation arranged to redirect at least some lines from the magnetic field away from the rear side of the housing and towards the front opening, thereby increasing the density of the magnetic flux between the first and the second pluralities of magnetic elements and a corresponding magnetic element in the host unit.

[000261] At least one of the plurality of magnetic components not used to magnetically link the accessory unit in the host unit is detected by a sensor in the host unit when the segmented flap portion is on top of the uppermost protective layer. The sensor causes a change in the operating state of the host unit according to the position of the segmented flap portion in relation to the protective layer and the segmented flap portion is formed of leather or polyurethane.

[000262] The various aspects, modalities, implementations or characteristics of the described modalities can be used separately or in any combination. Various aspects of the described modalities can be implemented by software, hardware or a combination of hardware and software. The described modalities can also be personified as computer-readable code in a non-transitory computer-readable medium. The computer-readable medium is defined as any data storage device that can store data that can then be read by a computer system. Examples of the computer-readable medium include reading memory, random access memory, CD-ROMs, DVDs, magnetic tape and optical data storage devices. The computer-readable medium can also be distributed through computer systems coupled in a network so that the computer-readable code is stored and executed in a distributed mode.

[000263] The preceding description, for purposes of explanation, used specific nomenclature to provide a complete understanding of the described modalities. However, it will be evident to someone skilled in the art that specific details are not necessary in order to practice the described modalities. Thus, the preceding descriptions of the specific modalities described here are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit modalities to the precise forms revealed. It will be evident to someone skilled in the art that many modifications and variations are possible in view of the above teachings.

[000264] The advantages of the described modalities are numerous. Different aspects, modalities or implementations can produce one or more of the following advantages. Many aspects and advantages of the present modalities are evident from the written description and thus, it is planned by the embodiments to cover all such aspects and advantages of the invention. Furthermore, since numerous modifications and changes will easily occur for those skilled in the art, the modalities should not be limited to the exact construction and operation as illustrated and described. Therefore, all suitable and equivalent modifications can be considered to be within the scope of the invention.

Claims (11)

1. Protective cover (1200) characterized by the fact that it is suitable to be removably attached to a tablet computer (1100) having a display having a higher layer (1106) and configured to present visual content, the protective cover (1200 ) comprising: a flap (1202) comprising an inner layer (1206), the flap (1202) having a size and shape according to the uppermost layer (1106) which is pivotally attachable to the tablet computer (1100) in one hinge portion (1328, 1330), the flap (1202) protecting the topmost layer (1106) when the inner layer (1206) of the flap (1202) comes in direct contact with the topmost layer (1106) of the display in a closed configuration; a magnetic element (414, 2260-1) in an additional portion of the flap (1304) which is opposite the hinge portion (1328, 1330) and detectable through the uppermost layer (1106) by a sensor (118) carried by the computer tablet (1100) when the flap (1202) is in the closed configuration and not otherwise detected, and the detection of the magnetic element (414, 2260-1) by the sensor (118) causes the tablet computer (1100 ) operate according to the closed configuration, and a magnetic coupling feature (216) in the additional portion of the flap (1304) and separate from the magnetic element (414, 2260-1) and usable to secure the inner layer (1206) of the flap (1202) to the topmost layer (1106) of the tablet computer (1100) in the closed configuration by magnetic fastening through the topmost layer (1106) of the tablet computer (1100) with a magnetic union feature (110) carried by the computer of tablet (1100). 2. Protective cover (1200) according to claim 1, characterized in that the hinge portion (1328, 1330) includes a hinge portion magnetic element (1324) capable of forming a magnetic connection with the magnetic element (1324) carried by the additional portion of the flap (1304). Protective cover (1200) according to claim 2, characterized by the fact that the magnetic connection between the magnetic element of the hinge portion (1324) and the magnetic element (1324) carried by the additional portion of the flap (1304) magnetically attaches the additional portion of the flap (1304) and the hinge portion (1328, 1330) to a triangular support structure. 4. Protective cover (1200) according to claim 3, characterized by the fact that the triangular support structure is capable of supporting the tablet computer (1100) at an angle to a support surface. 5. System (46) for removably securing a protective cover (1200) to a tablet computer (1100) characterized by the fact that it comprises: the protective cover (1200) as defined in any one of claims 1 to 4; and a tablet computer (1100). 6. System (46) according to claim 5, characterized by the fact that the tablet computer (1100) comprises a responsive circuit magnetically configured to detect a magnetic field. 7. System (46), according to claim 6, characterized by the fact that the magnetically responsive circuit comprises a Hall Effect sensor (HFX) (118). 8. System (46), according to claim 7, characterized by the fact that the HFX sensor (118) detects the magnetic element (414, 2260-1) carried by the additional portion of the flap (1200), and the responsive circuit it is magnetically configured to cause the tablet computer (1100) to enter a sleep state. 9. System (46) according to claim 7, characterized by the fact that the HFX sensor (118) is configured to respond to the additional portion of the flap (1304) that moves from the closed configuration to an open configuration and the circuit magnetically responsive causes the tablet (1100) to enter an active state other than the sleep state. 10. System (46), according to claim 5, characterized by the fact that the flap (1202) includes independently foldable sections, so that, in a peek mode, a first segment corresponding to the additional portion of the flap (1304) is folded away from the topmost layer (1106) regardless of a remaining portion of the flap that remains in contact with the topmost layer (1106), so that an optical sensor carried by the tablet computer is able to detect whether the another portion of the flap (1304) is folded away from the topmost layer (1106) of the display or if additional parts of the flap (1202) are folded. 11. System (46) according to claim 10, characterized in that, in the peeked mode, only a portion (2102) of the display that is made visible by the first segment (1304) of the flap that is folded is operable for display visual content.

Images