HK1073889A - Eyewear with exchangeable temple housing bluetooth enabled apparatus - Google Patents

Description

Glasses with replaceable support with built-in Bluetooth equipment

RELATED APPLICATIONS

Is free of

Technical Field

The present invention relates to a wireless communication eyewear apparatus having a replaceable carrier. More particularly, the present invention relates to eyewear that includes a transceiver that is capable of communicating using short-range wireless communication techniques.

Background

A user may purchase a number of conventional wearable personal devices, including eyeglasses, which have electrical input-output devices. Some of these devices provide wireless communication using radio or infrared frequencies. For example, US 6,091,832 discloses a wearable personal device that includes an audio transducer that can be used as an audio input or output device. The audio input or output signal is provided by a wireless system.

US patent 6,091,546 discloses an eyeglass interface system comprising a display device and one or more audio and/or video devices mounted on an eyeglass frame. The display device is mounted on a stand and provides an image for viewing by a user. The audio or video device is mounted on another stand and communicates with the display device. The audio or video means may comprise a camera means and/or an audio input or output means, such as a microphone and/or a loudspeaker. The application devices include a hands-free telephone, a hands-free pager, a hands-free time display, a hands-free blood pressure meter or vital signs monitoring device, a hands-free voice conference or a hands-free monitoring system. Application techniques may include voice recognition techniques using infrared links, Radio Frequency (RF) links, or fiber optic cables, and/or GPS techniques.

Further, a personal display device built into the eyeglass frame is disclosed on the website of inViso corporation and can be found at the following URL address:http：//www.inviso.com. The glasses of inViso are designed in the shape of sunglasses with a built-in personal display device that provides the wearer with a view of his/her computer screen. The view shown is the same as that provided by a 19 inch desktop monitor over a distance of 2.5 feet. However, in order to display the contents of the computer screen on the personal display device, it is necessary to connect the glasses of inViso to the computer.

Disclosure of Invention

Conventional devices are limited to handling one-to-one communication and cannot form an ad hoc network consisting of more than two devices. Conventional audio devices do not work well in noisy radio environments, are bulky and consume high power. It is therefore desirable to provide a wireless communication device that is capable of forming a particular network using a plurality of devices. It is also desirable to provide a device that is low cost, small, and consumes less power. It is also desirable to provide a device that can operate in a very noisy radio environment and be audible under harsh conditions.

The present invention overcomes the disadvantages of conventional devices and provides a wireless network formed by connecting eyeglasses to a computer, bracelet and telephone. The glasses have a transceiver mounted on the stand. The computer, bracelet and telephone also have similar transceivers mounted thereon. Other devices having similar transceivers, such as radios, CD players, hand-held global positioning satellites, and heart rate monitors, may also be connected to the transceivers. The transceiver is preferably a miniature, inexpensive short-range transceiver operating in the globally available unlicensed radio band 2.45 gigahertz (GHz). The transceiver conforms to the bluetooth standard recommended by the bluetooth special interest group. Bluetooth is an open specification technology, which is available from bluetooth SIG, inc, or downloaded from the following URL address:http：//www.Bluetooth.com. A copy of the bluetooth radio specification is appended to this specification, the entire contents of which are incorporated herein by reference. The transceiver is capable of supporting data rates up to 721 kbits/sec and three voice channels. The transceiver is operable at least two power levels: a low power level covering a distance of about ten meters and a high power level. High power levels cover a distance of one hundred meters and can operate even in very noisy radio environments and can be heard in harsh conditions. The transceivers limit their output power exactly to the power actually required. If the receiving device is only on a short range, the transceiver modifies its signal to fit the particular range. Also, the radio automatically switches to when traffic is reduced or stoppedA low power mode. The power consumption of a bluetooth device is less than three percent of the power consumption of a mobile phone.

The present invention provides eyewear having interchangeable holders with built-in transceivers that are supported by short-range wireless networking technology and allow the eyewear provided to form a short-range ad hoc network with other devices equipped with similar transceivers.

The eyeglasses include a frame to which are attached two supports. The bracket is connected to the frame at the hinge. The cradle has a male portion of one connector, such as an one-eighth inch audio connector, therein. The recess of the link is integral with the hinge. The bracket is mounted on the frame when the male portion is inserted into the female portion. The rack may be removed by disconnecting the connectors and then a rack having different equipment therein may be inserted in place of the removed rack.

In addition to having a transceiver built in, each of the housings of the glasses provided may have other communication devices, such as audio devices, cameras, speakers, microphones, display devices such as liquid crystals, or alarm devices, molded simultaneously within them. A battery for powering the transceiver and other simultaneously molded devices may also be simultaneously molded in a cradle and connected to a simultaneously molded device and transceiver by a simultaneously molded conductor.

In another embodiment, for example, glasses worn by an adult include a distance warning display that monitors movement of a child. In this embodiment, a device is worn by a child, preferably in the form of a bracelet equipped with its own short-range transceiver. The transceivers in the glasses and the bracelet form a short-range wireless network, wherein the glasses and the bracelet communicate with each other using signals conforming to the above-mentioned bluetooth standard. A transceiver in the eyewear is configured to initiate an alarm when the distance between the bracelet and the eyewear exceeds a predetermined distance.

Other features and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the invention, given by way of example only and with reference to the accompanying drawings.

Brief description of the drawings

A more complete understanding of the present invention may be obtained when the following description of the preferred embodiments is read in conjunction with the following drawings, in which:

FIG. 1 is a schematic diagram of a short-range wireless network formed by connecting an eyewear constructed in accordance with the present invention to a computer, bracelet and wireless telephone;

FIG. 2a is a schematic view of the eyeglasses of FIG. 1 illustrating removable holders of the eyeglasses and their connection to the eyeglass frame;

FIG. 2b is the hinged section with the male connector portion extended prior to molding in the stent;

figure 2c illustrates the hinge moulded within the bracket;

figure 2d illustrates the spatial relationship of the pin of the hinging section and the male connector part;

figure 2e illustrates the hinge, connector and circuitry such as a bluetooth PCB before moulding in the cradle;

FIG. 2f illustrates the spatial relationship of the components of FIG. 2c within the eyewear;

FIG. 3 is a flow chart of a network of the present invention glasses and various communication devices such as mobile phones or two-way radios;

FIG. 4 is a flow chart of a network of the present invention glasses and various audio playback devices such as an MP3 player;

FIG. 5 is a flow chart of a network of eyeglasses including a camera mounted on its frame and various video devices such as Personal Digital Assistants (PDAs) or portable computers;

FIG. 6 is a flow chart of a network of eyeglasses including a camera mounted on a stand thereof and various video devices such as Personal Digital Assistants (PDAs) or portable computers;

FIG. 7 is a flow chart of a network of the present invention glasses and teleconferencing apparatus;

FIG. 8 is a schematic view of different eyewear components molded simultaneously within the frame and the holder of the eyewear;

FIG. 9 is a side view of eyewear with a transceiver and a pair of removable audio speakers mounted;

FIG. 10 is a rear view of the eyewear of FIG. 8 with one speaker removed from its support;

FIG. 11 is a front view of the eyeglasses with a digital camera mounted on the frame of the eyeglasses and a pair of speakers mounted on the stand; and

fig. 12 is a schematic diagram of eyeglasses including a microphone mounted on its stand and a teleconferencing apparatus in communication with the eyeglasses.

Detailed Description

Fig. 1 illustrates the general concept of a preferred embodiment of the present invention. According to this embodiment, a wireless network 10 is formed by connecting glasses 12 with a computer 14, a bracelet 17 and a telephone 16. The glasses 12 have a transceiver 18 mounted on one of the housings of the glasses 12 (shown on the housing 19). The computer 14, bracelet 17 and telephone 16 all have similar transceivers (not shown) mounted on them. When the user of the glasses 12 comes within a predetermined distance from the devices, the glasses and the transceivers of the devices begin to communicate with each other, thereby establishing an ad hoc short-range wireless network 10.

Transceiver 18 is a miniature, inexpensive, and short-range transceiver operating in the globally available unlicensed radio band 2.45 gigahertz (GHz). Transceiver 18 conform to the bluetooth standard. Bluetooth is an open specification technology, which is available from bluetooth SIG, inc, or downloaded from the following URL address:http：//www.Bluetooth.com. A copy of the bluetooth radio specification is appended to this specification, the entire contents of which are incorporated herein by reference. The transceiver 18 is capable of supporting data rates up to 721 kbits/sec and three voice channels. The transceiver may operate at a low power level covering a range of about ten meters and a high power level covering a range of about one hundred meters. Transceiver 18 includes a chip 22 with software controls that allow a user to preset transceiver 18 with which to communicate. Bluetooth technology allows the transceiver to operate even in very noisy radio environments and to be audible in harsh conditions, such as in a thunderstorm rain.

The connection between the glasses 12, including the transceiver 18, and one or more other arbitrary devices forms a short-range wireless network 10 known as a piconet (piconet). Any device within the piconet network that includes a transceiver may be configured as a master and the remaining devices will be slaves. A different device may be configured as a master at a different time, transitioning the previous master to a slave of the newly configured master. Multiple piconetworks may be established and specifically linked to each other, and a slave device within one piconetwork may act as a master device within another piconetwork. The clocks of all devices in the piconetwork are synchronized with the clock of the master device. Full duplex data rates in a multi-piconet network structure consisting of ten fully loaded independent piconets may exceed 6 mbits/sec.

Transceivers 18 and other devices limit their output power to exactly the power actually needed. If the receiving device is only within a short range, the transceiver modifies its signal to accommodate the particular range. Also, when traffic is reduced or stopped, the radio automatically switches to a low power mode. The low power mode is interrupted with a very short signal in order to verify the established connection. A bluetooth device may have four modes of operation within one connection state. These four modes are local (part), hold (hold), seek (sniff), and active (active) in order of increasing power consumption. Thus, the power consumption of a bluetooth device is less than three percent of the power consumption of a mobile phone.

Figure 2a shows a schematic view of the spectacles 12 of figure 1. The eyeglasses 12 include a frame 24 and attached to the frame 24 are two supports 19 and 20. The brackets 19 and 20 are connected to the frame 24 by hinges 26 and 28, respectively. Although the hinges 26 and 28 are illustrated as being adjacent to and separate from the connector portions of the eyeglasses, it should be understood that this is for illustrative purposes only. As further discussed with reference to fig. 2b-2f, in a preferred embodiment of the invention, each hinge is integral with a portion (male or female) of the respective connector. The brackets 19 and 20 each have a male portion 30 of a connector 34, such as an one-eighth inch audio connector, therein. The recess 32 of the connector 34 is integral with the hinges 26 and 28. As is well known to those skilled in the art, the mounting locations of the male part 30 and the female part 32 may be interchanged, such as illustrated in fig. 2b-2 f. When the male part 30 is inserted into the female part 32, the bracket 20 is mounted on the frame 24. The bracket 19 is also mounted on the frame 24 in a similar manner. The brackets 19 and 20 can be removed by disconnecting the connection, into which different brackets with different equipment can be inserted instead of the brackets 19 or 20. When mounted to the frame 24, the brackets 19 and 20 substantially conceal the hinges 26 and 28, thereby providing an aesthetically pleasing appearance to the eyewear 12. Swab, entitled "interchangeable Eyeglass frame assembly with Quick connect attachment" (patent application serial No. 09/532,427), filed in greggt. swab, describes a frame assembly with Quick connect attachments for Quick mounting and dismounting of the frame assembly from the frame.

The frame 24 has pads 42 and 44 located near the hinges 28 and 26, respectively. Brackets 20 and 19 also have pads 46 and 48 that contact pads 42 and 44, respectively, when brackets 20 and 19 are in the open position. These pads, when contacted, form an electrical path, thereby initiating the electrical circuit of device 36. Alternatively, switch 50 may be on either bracket 19 or 20 to activate the circuit.

The hinge portion, which allows an electrically conductive connection between the two brackets and the frame, enables sharing of functions between the left and right brackets. It also enables the battery and circuitry such as a bluetooth PCB to be located on opposite sides to accommodate more circuitry and their functions, and to balance weight and volume. The hinge enables two mono or stereo speakers and can accommodate USB devices such as digital cameras.

Figure 2b illustrates an embodiment with the hinge portion (26 or 28) having the protruding male connector portion 32 prior to molding in the brackets 19 and 20. Figure 2c illustrates the hinge molded in the stent. Figure 2d illustrates the spatial relationship of the pin 50 of the hinge and the male connector portion 32. Figure 2e illustrates the hinge, connector 34 and circuitry 90 such as a bluetooth PCB before moulding in the cradle. Figure 2f illustrates the spatial relationship of the components of figure 2c within the eyewear.

The holder 20 has simultaneously molded into its body a device 36. The device 36 may be, for example, an audio device, a camera, a speaker, a microphone, and a display device such as a liquid crystal or an alert device. The device includes circuitry that operates within an electronic package, such as a bluetooth module with a PCB. The battery 38 may be simultaneously molded within the cradle 20 or 19 and connected to the simultaneously molded device 36 by the simultaneously molded conductor 40.

Other devices having their own transceivers similar to the transceiver 18, such as radios, CD players, hand-held gps systems, and heart rate monitors, may also be connected to the glasses 12. As shown in the flow chart of fig. 3, in one embodiment of the invention, the eyeglasses 12, including the transceiver 18, battery 52, microphone 54 and speaker 56 molded within one of its housings, are connected to a mobile phone, heart rate monitor or two-way radio, represented in this flow chart by a block 66. All of these connected devices are equipped with their own transceivers 68 similar to the transceiver 18, each powered by a battery 72. Because mobile phones, heart rate monitors, and two-way radios are typically battery operated, no other power source is required to power the transceiver 68. A signal, such as audio information generated by the wearer of the glasses 12, is transmitted via the microphone 54 and the transceiver 18 to the transceiver 68 associated with the targeted receiving device, which performs a desired operation upon receipt of the signal, such as the subsequent transmission of the received audio information. A similar embodiment of the present invention is illustrated in fig. 7 and 12, wherein the eyeglasses 12 are used with a teleconferencing apparatus 78. Thus, the transceiver 18 of the glasses 12 is connected to the transceiver 80 of the teleconferencing apparatus 78 to transmit/receive communication signals. This embodiment of the present invention may also be used with a digital camera, as will be described more fully below, for video conferencing.

In another embodiment of the invention, as shown in the flow chart of fig. 4, the eyeglasses 12 may be connected to various audio playback devices, such as an MP3 audio player 58, by connecting the eyeglasses transceiver 18 to the MP3 player transceiver 70. In this embodiment, one speaker is mounted on each of the frames of the eyeglasses 12, i.e., the left speaker 60 is mounted on the left frame 19 and the right speaker 62 is mounted on the right frame 20. Preferably, only one speaker (left speaker 60 in fig. 4) is connected directly to the transceiver 18, and then the other speaker (right speaker 62 in fig. 4) is connected to the first speaker through the conductor connections of the two brackets and the frame. Similar to the previous embodiment, the MP3 player 58 is equipped with its own transceiver 70 capable of exchanging signals with the transceiver 18. In operation, when the MP3 player plays previously stored music or any other audio signal that has been stored, the transceiver 70 feeds this signal to the transceiver 18, which transmits it to the speakers 60 and 62. This embodiment of the invention is further illustrated in fig. 9 and 19, showing the eyeglasses 12 as including a transceiver 18 molded within the left brace 19, a left speaker 60 removably mounted on the left brace 19, and a right speaker 62 removably mounted on the right brace 20. The left support 19, frame 24 and right support 20 form a conductive link connecting the right speaker 62 to the left speaker 60.

As shown in the flow chart of fig. 5, various video or photographable devices 74, such as a portable computer, Personal Digital Assistant (PDA), mobile phone, or other device, may also be connected to the eyewear 12. In this embodiment, a small digital camera 64 is mounted on the frame 24 of the eyeglasses 12, such as illustrated in FIG. 11. The camera 64 is preferably capable of taking digital still pictures as well as video images and transmitting them to one or more transceivers 76 of the connected devices 74 via the transceiver 18. If the camera 64 is provided with software, such software may be stored in a connected device 74, such as a portable computer. The camera 64 may then be controlled by sending commands issued by the portable computer to the glasses 'transceiver 18 via the portable computer's transceiver 76, which in turn communicates the commands to the camera for execution. This embodiment may be particularly useful if used with the child's alarm system described below. In the described embodiment, electrically conductive connections of the two brackets and the frame are necessary in order to transmit and receive signals to and from the connected devices. However, if such a connection is not desired, the camera 64 may be located in the same cradle as the transceiver 18, such as the cradle 19. Thus, the electrical connection link between the camera and the transceiver can be implemented within a single cradle, as shown in the flow chart of fig. 6.

Fig. 8 illustrates possible combinations of the spectacle parts described in the previous embodiments. As mentioned above, the eyeglasses comprise a frame 24 and two supports: a left bracket 19 and a right bracket 20. The frame 24 preferably houses a camera 64 for capturing video and still images. The right support 20 preferably houses a removable right speaker 62. The left stand 19 preferably houses a removable left speaker 60, microphone 54, transceiver 18 and battery 52. When the eyeglasses 12 are open, as shown in fig. 8, the conductive connections between all of the components are closed, thereby enabling the battery 52 to power all of the components located on the frame and the opposite side support.

In another embodiment, the eyewear 12, worn by an adult for example, includes a distance alarm monitor that monitors the movement of a child. In this embodiment, a device is worn by a child, preferably in the form of a bracelet fitted with its own short-range transceiver (see fig. 1). The transceiver 18 in the glasses and the transceiver 17 in the bracelet form a short-range wireless network, wherein the glasses and the bracelet communicate with each other using signals conforming to the bluetooth standard described above. The transceiver 18 in the glasses 12 is configured to initiate an alarm when the distance between the bracelet 17 and the glasses 18 exceeds a predetermined distance. The alert signal may be, for example, a visual alert signal such as a red light, an audio alert signal such as an audible beep, or a vibratory alert signal. Of course, the functions of the glasses and bracelet may be interchanged, i.e. a monitored adult wears the bracelet comprising a distance alarm monitor, while a child wears glasses comprising its own transceiver. Alternatively, two pairs of glasses may be provided, one with an alarm monitor and a control transceiver to be worn by an adult and the other with a controlled transceiver to be worn by a child.

The invention also includes a method of making the eyewear. The eyewear is manufactured in a process that establishes the electrical components contained throughout the frame and the holder. To provide electrical power to the various components, the electrical components and conductors discussed above are embedded within the frame and frame portions. In one approach, some or all of the components, including the conductors, are molded simultaneously within the frame and the bracket. This is an in-process method in which these components are inserted into the rack and frame tooling. The molding operation is initiated and plastic material is injected into the interior of the tool so that the components are permanently disposed within the rigid carrier and frame.

Alternatively, the manufacturing method may be to fit some or all of the components, including the conductors, within the parts that make up the frame and the frame. These parts that make up the frame and the frame are designed and injection molded to facilitate the insertion and assembly of the mechanical and electrical components. In addition, a combined method of simultaneously molding and assembling parts may also be used, thereby maximizing efficiency.

Although preferred embodiments of the present invention have been described, it will be obvious to those skilled in the art that changes and modifications may be made therein without departing from the invention in its broader aspects and, therefore, the appended claims are to encompass within their scope all such changes and modifications as fall within the true spirit and scope of this invention.

Bluetooth specification 1.1A edition-radio frequency specification

Directory

1 range … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … 10

2 band and channel setting … … … … … … … … … … … … … … … … … … … … … … … … … … 11

3 transmitter characteristics … … … … … … … … … … … … … … … … … … … … … … … … … … … … 12

3.1 modulation characteristics … … … … … … … … … … … … … … … … … … … … … … … … … … … … 13

3.2 spurious emission … … … … … … … … … … … … … … … … … … … … … … … … … … … … … 13

3.2.1 in-band spurious emissions … … … … … … … … … … … … … … … … … … … … … … … … … … 13

3.2.2 out-of-band spurious emissions … … … … … … … … … … … … … … … … … … … … … … … … … … 14

3.3 radio frequency Fault tolerance … … … … … … … … … … … … … … … … … … … … … … … … … … … … 14

4 receiver characteristics … … … … … … … … … … … … … … … … … … … … … … … … … … … … 16

4.1 actual sensitivity level … … … … … … … … … … … … … … … … … … … … … … … … … … 16

4.2 interference performance … … … … … … … … … … … … … … … … … … … … … … … … … … … … 16

4.3 out-of-band obstruction … … … … … … … … … … … … … … … … … … … … … … … … … … … … 17

4.4 Intermodulation characteristics … … … … … … … … … … … … … … … … … … … … … … … … … … … … 17

4.5 maximum available level … … … … … … … … … … … … … … … … … … … … … … … … … … 18

4.6 spurious emissions … … … … … … … … … … … … … … … … … … … … … … … … … … … … … 18

4.7 receiver Signal Strength flag (optional) … … … … … … … … … … … … … … … … … … … … 18

4.8 reference Signal definition … … … … … … … … … … … … … … … … … … … … … … … … … … 18

5 appendix A … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … 20

6 appendix B … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … 22

1 range

The bluetooth transceiver operates in the 2.4GHz ISM band. This specification specifies the requirements of a bluetooth transceiver operating on the unregistered band.

These requirements are defined for two reasons:

providing compatibility between radios used within the system;

define system quality.

The bluetooth transceiver should comply with the stated requirements under the operating conditions specified in annex a and annex B. The radio parameters have to be measured according to the methods described in the radio frequency test specification.

This specification is based on regulations established in europe, japan, and north america. The standard files listed below are for information only and may be changed or revised at any time.

Europe (except france and spain):

the permission standard is as follows: european Telecommunications standards institute, ETSI

File: ETS 300-

A license agency: national type licensing organization

France:

the permission standard is as follows: la reselection en France pos les acquisition information fontinutantant dans La bande de frequencies 2.4GHz 'RLAN-radio local area network'.

File: SP/DGPT/ATAS/23, ETS 300-

A license agency: direction general des places telecommunications

Note: a new R & TTE EU directive will be executed in 3 months of 2000, thus affecting the manufacturing declaration of product consistency and free circulation within the european union.

Spain:

the permission standard is as follows: supplemento Del nuler 164 Del Boletin Oficial Delestado (published 91, 7 and 10 days, revised 93, 6 and 25 days)

File: ETS 300 + 328, ETS 300 + 826

A license agency: cuadro Nacional De Atributucion De Frecusias

In Japan:

the permission standard is as follows: radio association of industry and commerce, ARIB

File: RCR STD-33A

A license agency: postal and telecommunication sector, MPT

Note: the rules in japan are being revised, and the second quarter in 1999 will determine the revision.

North america:

the permission standard is as follows: federal communications Commission, FCC, USA

File: CFR47, part fifteen, sections 15.205, 15.209 and 15.247

The permission standard is as follows: industrial Canada, IC, Canada

File: GL36

A license agency: FCC (USA), Industrial Canada (Canada)

Frequency band and channel setup

The bluetooth system operates in the 2.4GHz ISM (industrial scientific and medical) band. In most countries around the world, this band ranges from 2400-2483.5 MHz. However, some countries have a national limit in this frequency band. In order to comply with these national restrictions, special frequency hopping algorithms must be specified for these countries. It should be noted that products using a reduced frequency band will not work with products using the entire frequency band. Therefore, products using reduced bands must be considered local versions for one market. The bluetooth SIG has initiated an activity to overcome these difficulties and achieve full coordination of the bands.

Region of land	Specified range	Radio frequency channel
			The United states, Europe and most other countries	2.400-2.4835GHz	f＝2402+kMHz，k＝0，...，78

Table 2.1: frequency band of operation

Note 1: the bluetooth specification includes a special frequency hopping pattern to provide compliance with national restrictions such as france. The frequency range of france is 2.4465-2.4835GHZ and the corresponding video channels are f 2454+ khz, k 0, …, 22.

The channel spacing is 1 MHz. In order to comply with the out-of-band regulations of each country, guard bands are used on the upper and lower band edges.

Region of land	Lower guard band	Upper guard band
			The United states, Europe and most other countries	2MHz	3.5MHz

Table 2.2: guard bands

3 transmitter characteristics

The requirements described in this section are given in terms of power levels on the antenna connector of the device. If the device has no connector, a reference antenna with a gain of 0dBi is assumed.

Due to the difficulty in measuring accuracy in radiometry, systems comprising an integral antenna preferably provide a temporary antenna connector during the calibration process.

If a transmit antenna with a directional gain greater than 0dBi is used, the applicable paragraphs in ETSI 300328 and FCC part 15 must be supplemented.

The device is divided into three power levels.

Power class	Maximum output power (Pmax)	Nominal output power	Minimum output power1)	Power control
					1	100mW(20dBm)	N/A	1mW(0dBm)	Pmin < +4dBm to Pmax can be selected: pmin2)To Pmax
2	2.5mW(4dBm)	1mW(0dBm)	0.25mW(-6dBm)	And (3) optional: pmin2)To Pmax
					3	1mW(0dbm)	N/A	N/A	And (3) optional: pmin2)To Pmax

Table 3.1: power level

Note 1: minimum output power at maximum power setting.

Note 2: the lower power limit Pmin < -30dBm is proposed but is not mandatory and can be chosen according to the needs of the application.

A device at a first power level requires a power control. Power control is used to limit the transmit power above 0 dBm. Power control performance below 0dBm is optional and can be used to optimize power consumption and overall interference level. The power step should constitute a monotonic sequence with a maximum step of 8dB and a minimum step of 2 dB. A first class of device with a maximum transmit power of +20dBm must be able to control its transmit power below 4dBm or lower.

Power control capable devices use LMP commands (see link manager protocol) to optimize output power within a link. By measuring RSSI and reporting back whether power should be increased or decreased.

It should be noted that if the receiving side of a connection does not support the messages necessary for transmit side power control (i.e., RSSI measurements and related messages), packets cannot be transmitted from one device to another using the first power level. In this case, the transmitter should comply with the specifications of the second level or third level transmitter.

It should also be noted that if a device of the first class is paging or querying another device that is in close proximity, the input power may be greater than required in the 4.5 maximum available level. This may result in the listening device not being able to respond to it. Therefore, it is useful to use transmissions according to the second or third power class for paging and inquiry.

3.1 modulation characteristics

The modulation is GFSK (gaussian frequency shift keying) with BT ═ 0.5. The modulation index must be between 0.28 and 0.35. A binary 1 is represented by a positive frequency offset and a binary 0 is represented by a negative frequency offset. The symbol timing should be better than ± 20 ppm.

FIG. 3.1: figure 3-1 actual transmit modulation

For each transmit channel, the minimum frequency offset (Fmin ═ { Fmin +, Fmin- }) corresponding to 1010 sequences should be no less than ± 80% of the frequency offset (fd) corresponding to 00001111 sequences.

Further, the minimum offset should be no less than 115 kHz. The symbol rate of the transmitted data is 1 Ms/s.

The zero crossing error is the time difference between the ideal symbol period and the measured zero crossing time. It should be less than 1/8 for one symbol period.

3.2 spurious emission

Measuring in-band and out-of-band spurious emissions using a frequency hopping transmitter that hops at a single frequency; this means that the synthesizer must change the frequency between the receive and transmit time slots, but always return to the same transmit frequency.

In the united states, FCC parts 15.247, 15.249, 15.205, and 15.209 are applicable regulations. In Japan, RCR STD-33 is available, and in Europe, ETSI 300328.

3.2.1 in-band spurious emission

In the ISM band, the transmitter should pass a frequency given in Table 3.2And (4) a spectrum cover. The spectrum must comply with the FCC 20dB bandwidth regulations and should be measured accordingly. In addition to the FCC requirements, adjacent channel powers of adjacent channels whose channel numbers differ by 2 or more are defined. This adjacent channel power is defined as the sum of the powers measured in the 1MHz channel. The transmit power should be measured within the 100kHz bandwidth using the maximum hold value. The transmitter transmits on channel M and measures the adjacent channel power on channel number N. The transmitter sends a pseudo-random data pattern throughout the test.

Frequency offset	Transmitting power
		±550kHz|M-N|＝2|M-N|≥3	-20dBc-20dBm-40dbm

Table 3.2: emission spectrum cover

Note: if the output power is below 0dBm, the FCC's relative 20dB requirement overrules the absolute adjacent channel power requirement described in the above table, whenever appropriate.

Exceptions to the frequency band of up to three 1MHz bandwidths are allowed, with the band centered at a frequency that is an integer multiple of 1 MHz. However, they must conform to an absolute value of-20 dBm.

3.2.2 out-of-band spurious emissions

The measured power should be measured within a bandwidth of 100 kHz.

Frequency band	Mode of operation	Idle mode
			30MHz-1GHz1GHz-12.75GHz1.8GHz-1.9GHz5.15GHz-5.3GHz	-36dBm-30dBm-47dBm-47dBm	-57dBm-47dBm-47dBm-47dBm

TABLE 3.3 out-of-band spurious emission requirements

3.3 radio frequency fault tolerance

The accuracy of the transmitted initial center frequency must be at F_cWithin ± 75 kHz. The initial frequency accuracy is defined as the frequency accuracy before any information is transmitted. Note that the frequency drift requirement is not included within ± 75 kHz.

The transmitter center frequency drift within a packet is specified in table 3.4. Different packets are defined in the baseband specification.

Packet type	Frequency drift
		Maximum drift rate for a packet of one slot and a packet of three slots and a packet of five slots	±25kHz±40kHz±40kHz400Hz/μs

TABLE 3.4 frequency drift within one packet

Note 1: the maximum drift rate is allowed anywhere within a packet.

4 receiver characteristics

To measure bit error rate performance; the device must have a "loop back" function. The device sends the decoded information back. This functionality is specified in the test mode specification.

The reference sensitivity level mentioned in this chapter is equal to-70 dBm.

4.1 actual sensitivity level

The actual sensitivity level is defined as the input level that meets a raw Bit Error Rate (BER) of 0.1%. The requirement of a bluetooth receiver is a practical sensitivity level of-70 dBm or better. Along with any bluetooth transmitter that conforms to the transmitter specification specified in section 3 on page 21, the receiver must achieve a sensitivity level of-70 dBm.

4.2 interference Performance

The interference performance on the co-channel and adjacent 1MHz and 2MHz was measured using a useful signal that was 10dB higher than the interference sensitivity level. At all other frequencies, the useful signal should be 3dB higher than the interference sensitivity level. If the frequency of an interfering signal lies outside the bands 2400-. The interfering signal should be bluetooth modulated (see section 4.8 on page 28). BER should be ≦ 0.1%. The signal-to-noise ratio should be:

require that	Signal to noise ratio
		Co-channel interference, C/ICo-channelAdjacent (1MHz) interference, C/I1MHzAdjacent (2MHz) interference, C/I2MHzAdjacent (greater than or equal to 3MHz) interference, C/I greater than or equal to3MHzImage frequency interference2)3)，C/IMirror imageAdjacent (1MHz) interference to in-band image frequency, C/IMirror +/-1 MHz	11dB1)0dB1-30dB-40dB-9dB1-20dB1

Table 4.1: interference performance

Note 1: these specifications are experimental and will remain unchanged for 18 months after release of the bluetooth specification version 1.0. After a three year convergence period following the start of the release of the bluetooth specification version 1.0, the implementation will have to conform to the final specification. During the fusion period, the device must achieve +14dB of co-channel interference impedance, +4dB of ACI (@1MHz) impedance, -6dB of image frequency interference impedance, and-16 dB of ACI impedance to the in-band image frequency.

Note 2: in-band image frequencies.

Note 3: if the mirror frequency ≠ nx 1MHz, the mirror reference frequency is defined as the closest nx 1MHz frequency.

Note 4: if the two adjacent channel specifications of table 4.1 are applicable to the same channel, a more relaxed specification may be applied.

These specifications will only be tested using a receiver that hops on one frequency at nominal temperature conditions, which means that the synthesizer must change frequency between receive and transmit time slots, but always return to the same receive frequency.

The unsatisfactory frequency is referred to as the spurious response frequency. Five spurious response frequencies are allowed at frequencies ≧ 2MHz from the desired signal. At these spurious response frequencies, a relaxed interference requirement C/I of-17 dB must be met.

4.3 out-of-band occlusion

The out-of-band blocking is measured using a useful signal that is 3dB higher than the interference sensitivity level. The interfering signal should be a continuous waveform signal. BER should be ≦ 0.1%. The out-of-band blockage must meet the following requirements:

frequency of interference signal	Interference signal power level
		30MHz-2000MHz2000-2399MHz2500-3000MHz3000MHz-12.75GHz	-10dBm-27dBm-27dBm-10dBm

Table 4.2: out-of-band blocking requirements

24 exceptions are allowed, which are based on a given receive channel frequency and are centered around a frequency that is an integer multiple of 1 MHz. At 19 of these pseudo response frequencies, a relaxed power level of-50 dBm of the interfering signal can be used to achieve a 0.1% BER, and at the remaining 5 pseudo response frequencies, the power level is arbitrary.

4.4 Intermodulation characteristics

The interference sensitivity performance should be satisfied under the following conditions, BER ═ 0.1%.

At frequency f₀The power level of the upper wanted signal is 6dB higher than the interference sensitive level.

At f₁The power level of the static sine wave signal at (c) is-39 dBm.

At f₂The power level of the bluetooth modulated signal above (see section 4.8 on page 28) is-39 dBm.

Thus, f₀＝2f₁-f₂And | f₂-f₁1MHz, where n may be 3, 4 or 5. The system must comply with one of three alternative standards.

4.5 maximum available level

The maximum usable input level that the receiver should use should be better than-20 dBm. The BER should be less than or equal to 0.1% at-20 dBm input power.

4.6 spurious emission

The spurious emissions of the bluetooth receiver should not exceed:

frequency band	Require that
		30MHz-1GHz1GHz-12.75GHz	-57dBm-47dBm

Table 4.3: out-of-band spurious emission

The measured power should be measured within a bandwidth of 100 kHz.

4.7 receiver Signal Strength flag (optional)

A transceiver wishing to support a power controlled link must be able to measure the strength of the received signal and determine whether a transmitter on the other side of the link should increase or decrease its output power level. This is made possible by the Receiver Signal Strength Indicator (RSSI).

The RSSI measurement compares the received signal power to two threshold levels, which define the optimum received power range. The lower threshold level corresponds to a received power between-56 dBm and 6dBm above the actual sensitivity of the receiver. The upper threshold level is 20dB higher than the lower threshold level with an accuracy of ± 6dB (see fig. 4.1 on page 16).

FIG. 4.1: dynamic range and accuracy of RSSI

4.8 reference Signal definition

Defining a bluetooth modulated interferer as:

modulation-GFSK

The modulation index is 0.32 plus or minus 1 percent

BT＝0.5±1％

Bit rate 1 Mbps. + -. 1ppm

Modulation data PRBS9 for useful signals

Modulated data for interference signal PRBS15

The frequency accuracy is better than + -1 ppm.

5 appendix A

5.1 Nominal Test Conditions (NTC)

5.1.1 nominal temperature

The nominal temperature conditions for the test should be +15 to +35 ℃. When testing under such conditions is not feasible, a note describing the ambient temperature should be recorded. The actual values during the test should be recorded in the test report.

5.1.2 nominal Power supply

5.1.2.1 Main Voltage

The nominal test voltage at which the device will be connected to the mains supply should be the nominal mains voltage. The nominal voltage should be the design assertion voltage or any of a plurality of assertion voltages of the device. The frequency of the test power supply corresponding to the ac mains should be within 2% of the nominal frequency.

5.1.2.2 lead-acid Battery Power supply for use on vehicles

When the radio is powered by an alternator-fed lead-acid battery power supply standardized within the vehicle, then the nominal test voltage should be 1.1 times the nominal voltage of the battery (6V, 12V, etc.).

5.1.2.3 other sources

For power from other power sources or other types of batteries (primary or secondary), the nominal test voltage should be the voltage declared by the device manufacturer. It should be recorded in the test report.

5.2 Limit test conditions

5.2.1 limiting temperature

The limiting temperature range is defined as the maximum temperature range given by the combination of:

minimum temperature range of 0 ℃ to +35 ℃;

manufacturer stated product operating temperature range.

This limit temperature range and the stated operating temperature range should be recorded in the test report.

5.2.2 Limit supply Voltage

When the device under test is designed to be used as part of and powered by another system or another device, testing need not be performed at the limit supply voltages specified below. In this case, the limit values of the host system or the host device should be applied. The appropriate limit should be declared by the manufacturer and recorded in the test report.

5.2.2.1 Main Voltage

The ultimate test voltage for a device to be connected to an ac mains supply should be ± 10% of the nominal mains voltage.

5.2.2.2 lead-acid Battery Power supply for use on vehicles

When the radio is powered by an alternator-fed lead-acid battery power supply standardized on the vehicle, then the limit test voltage should be 1.3 and 0.9 times the nominal voltage of the battery (6V, 12V, etc.).

5.2.2.3 Power supply Using other types of batteries

The lower limit test voltage for a device with a power supply using the following type of battery should be:

a) lechance, alkaline or lithium batteries: 0.85 times the nominal voltage of the battery;

b) mercury or nickel cadmium cells: 0.9 times the nominal voltage of the cell.

In both cases, the upper limit test voltage should be 1.15 times the nominal voltage of the cell.

5.2.2.4 other sources of power

For devices that use other power sources or can be powered by multiple power sources (primary or secondary), the limit test voltage should be the voltage that the manufacturer should declare. These limit test voltages should be recorded in the test report.

6 appendix B

The radio parameters should be tested under the following conditions:

parameter(s)	Temperature of	Power supply
			Intermodulation characteristic intermodulation signal strength mark of in-band spurious emission out-of-band spurious emission sensitivity interference performance of output power control modulation index initial carrier frequency accuracy carrier frequency drift	ETCNTCETCETCETCETCETCETCNTCNTCNTCNTCNTC	ETCNTCETCETCETCETCETCETCNTCNTCNTCNTCNTC

ETC-Limit test Condition

NTC-nominal test conditions

Claims (32)

1. An eyewear, comprising:

a transceiver for short-range wireless communication, said transceiver being capable of forming an ad hoc wireless network with a plurality of devices.

2. The eyewear of claim 1 wherein the communication between the transceiver and the device uses signals conforming to the bluetooth standard.

3. The eyewear of claim 1 wherein any of said transceivers and said devices may be configured as a master or slave in a master-slave configuration.

4. The eyewear of claim 1 wherein the device is a mobile device.

5. The eyewear of claim 4 wherein said mobile device is selected from the group consisting of: telephones, computers, radios, compact disc players, cameras, distance alarms, heart rate monitors, and hand-held global positioning satellite systems.

6. The eyewear of claim 4 wherein said device is located within a distance of one hundred meters or less.

7. The eyewear of claim 1 wherein said transceiver automatically varies the output power to adjust the transmission range to exactly the desired range.

8. The eyewear of claim 1 wherein said transceiver and said device each have a clock that is automatically synchronized with one of said clocks that is a designated master clock.

9. The eyewear of claim 1 wherein said transceiver can communicate only with those devices that are pre-set to communicate with said transceiver.

10. The eyewear of claim 1 wherein said transceiver is operable in a noisy radio environment and is audible under harsh conditions.

11. The eyewear of claim 1 further comprising:

a frame; and

at least one bracket removably mounted on the frame.

12. The eyewear of claim 11 further comprising:

a device mounted on the support.

13. The eyewear of claim 11 wherein said device is selected from the group consisting of: audio equipment including speakers and microphones, cameras, display devices, distance alarms and ear microphones (ear bud).

14. The eyewear of claim 1 further comprising:

a device mounted on the support.

15. The eyewear of claim 14 wherein said device is selected from the group consisting of: audio devices including speakers and microphones, cameras, display devices, distance alarms, and headsets.

16. The eyewear of claim 11 further comprising:

a hinge connecting the frame and the bracket;

a first shim positioned on the frame; and

a second gasket on the bracket;

wherein the first and second pads contact each other when the stand is in the open position, thereby establishing an electrical connection.

17. The eyewear of claim 11 further comprising:

a hinge portion;

a connector having a male portion and a female portion, wherein said hinge portion is connected to said frame and said female portion, and said bracket is connected to said male portion so as to mount said bracket to said frame when said male portion is engaged with said female portion to substantially conceal said connector and said hinge portion.

18. The eyewear of claim 11 further comprising

A hinge portion;

a connector having a male portion and a female portion, wherein the hinge portion is connected to the frame and the male portion, and the bracket is connected to the female portion such that mounting the bracket to the frame when the male portion is engaged with the female portion substantially conceals the connector and the hinge portion.

19. The eyewear of claim 17 further comprising:

a switch, said switch located on said support.

20. The eyewear of claim 12, wherein at least a portion of the device is embedded within the support.

21. The eyewear of claim 20 further comprising:

a conductor embedded within the cradle and the frame, the conductor establishing electrical connections between different components of the device.

22. A distance alarm system comprising:

an eyeglass; and

a transceiver mounted on said eyewear for short-range wireless communication; and

a device, said device and said transceiver capable of forming an ad hoc wireless network and generating an alert signal when a predetermined distance is exceeded between said device and said eyewear.

23. The distance alarm system of claim 22 wherein said distance at which the alarm signal is generated is set by a user.

24. The distance alarm system of claim 22 wherein the communication between said transceiver and said device uses signals conforming to the bluetooth standard.

25. The distance alarm system of claim 22 wherein said generated alarm signal is one of a visual, vibratory and audio alarm signal.

26. A method of manufacturing eyewear comprising:

a mold frame;

molding a bracket;

simultaneously molding equipment components within the frame; and

a hinge is used to connect the frame and the bracket.

27. The method of claim 26, further comprising:

simultaneously molding conductors within the frame and the bracket, the conductors establishing electrical connections between the bracket and the frame or the components within the bracket.

28. The method of claim 26, further comprising:

a connector is provided between the hinge portion and the bracket, a convex portion of the connector being a part of the bracket and a concave portion of the connector being a part of the hinge portion, so that the bracket is mounted on the frame when the convex portion and the concave portion are connected.

29. A method of generating an alarm signal, comprising:

providing eyewear including a transceiver for short-range wireless communication;

providing a device comprising a second transceiver for short-range wireless communication;

an ad hoc wireless network is formed between the device and the eyewear and an alarm signal is generated when a predetermined distance is exceeded between the device and the eyewear.

30. The method of claim 29, further comprising:

the communication between the glasses and the device uses signals conforming to the bluetooth standard.

31. An eyewear, comprising:

a frame;

at least two hinged parts; and

at least two brackets, wherein the hinge removably connects the brackets to the frame and a second bracket may be substituted for each of the brackets.

32. The eyewear of claim 31, wherein said second support has molded therein simultaneously a device selected from the group consisting of: audio devices including speakers and microphones, cameras, display devices, distance alarms, and headsets.