TWM607874U - Projection system and projection display system - Google Patents

Abstract

A projection system suitable for a projection screen includes a projection device including a projection unit and a shooting unit, a signal output unit suitable for being arranged on the projection screen, and a processing unit. When the projection unit projects an image, the processing unit generates image position data indicating the position of the image according to a photographing result generated by the photographing unit, and generates image position data according to a plurality of wireless signals output by the signal output unit A projection screen position data indicating the position of the projection screen, the processing unit generates a calibration data according to the comparison result between the image position data and the projection screen position data, and adjusts at least one related data according to the calibration data The setting parameters of the projection unit are used to reduce the size or position difference between the image and the projection screen.

Description

Projection system and projection display system

The present invention relates to a projection system, in particular to a projection system that uses wireless signals to correct the projected image. The present invention also relates to a projection display system including the projection system.

In modern society, projection devices are often used in teaching, speeches, conferences, briefings and other occasions. Projecting various information on the projection screen by the projection device can not only effectively assist the speaker in delivering the message, but also make it easier for the audience to understand the content of the speaker.

When using a projection device, it is necessary to ensure that the image projected by the projection device matches the projection screen. More specifically, the position and size of the projected image must match the projection screen as much as possible to obtain the best projection effect. However, once the relative positional relationship between the projection device and the projection screen changes, the projected image and the projection screen will no longer match each other. At this time, the user must re-adjust the placement or settings of the projection device Parameters, and cause inconvenience in use.

One of the objectives of the present invention is to provide a projection system that can improve the inconvenience of the prior art.

The new projection system is suitable for a projection screen, and the projection system includes a projection device, a signal output unit and a processing unit. The projection device includes a projection unit, a photographing unit and a signal receiving unit. The signal output unit is suitable for being arranged on the projection screen. The processing unit is electrically connected to the projection unit, the photographing unit, and the signal receiving unit. In the case that the projection unit projects an image toward the projection screen, the processing unit obtains a shooting result generated by the shooting unit and presents the image from the shooting unit, and generates an indication of the image according to the shooting result The image location data of the location. The signal receiving unit receives a plurality of wireless signals output by the signal output unit, and the processing unit generates a projection screen position data indicating the position of the projection screen according to the wireless signals. The processing unit generates a calibration data according to the comparison result between the image position data and the projection screen position data, the calibration data indicates the difference of at least one of the size and the position between the image and the projection screen, the The processing unit adjusts at least one setting parameter related to the projection unit according to the calibration data to reduce the difference in at least one of the size and position between the image and the projection screen.

In some implementations of the projection system of the present invention, the signal output unit includes a plurality of signal transmitters, and the signal transmitters are adapted to be respectively arranged at a plurality of corner areas of the projection screen. The image position data includes a plurality of image position coordinates, and the image position coordinates respectively correspond to a plurality of vertices of the image. The wireless signals are respectively output by the signal transmitters, the projection screen position data includes a plurality of projection screen position coordinates corresponding to the signal transmitters, and each projection screen position coordinate is determined by the processing unit according to the corresponding The strength and direction of the wireless signal output by the signal transmitter are calculated.

In some embodiments of the new projection system, the projection screen is a touch-sensitive projection screen, and after the processing unit adjusts the at least one setting parameter according to the calibration data, the image is projected on the projection unit In the case of, the processing unit executes the specific processing program when it receives a touch operation data from the projection screen and determines that the touch operation data indicates a specific processing program related to the image.

In some embodiments of the new projection system, before the processing unit generates the image position data and the projection screen position data, the processing unit also generates the image and controls the projection unit to project the image. After the processing unit adjusts the at least one setting parameter according to the calibration data, the image presents a user operation interface, and the processing unit is based on a touch operation position and a touch operation contained in the touch operation data. The operation type is used to determine whether the touch operation data indicates the specific processing program related to the user operation interface, and when the specific processing program is executed, the processing unit also determines the execution process and execution result of the specific processing program At least one of is present in the image to be projected by the projection unit.

Another object of the present invention is to provide a projection display system including the projection system.

The new projection display system includes a projection device, a projection screen, a signal output unit and a processing unit. The projection device includes a projection unit, a photographing unit and a signal receiving unit. The signal output unit is used to be arranged on the projection screen. The processing unit is electrically connected to the projection unit, the photographing unit, and the signal receiving unit. In the case that the projection unit projects an image toward the projection screen, the processing unit obtains a shooting result generated by the shooting unit and presents the image from the shooting unit, and generates an indication of the image according to the shooting result The image location data of the location. The signal receiving unit receives a plurality of wireless signals output by the signal output unit, and the processing unit generates a projection screen position data indicating the position of the projection screen according to the wireless signals. The processing unit generates a calibration data according to the comparison result between the image position data and the projection screen position data, the calibration data indicates the difference of at least one of the size and the position between the image and the projection screen, the The processing unit adjusts at least one setting parameter related to the projection unit according to the calibration data to reduce the difference in at least one of the size and position between the image and the projection screen.

In some implementation aspects of the new projection display system, the projection screen is a touch-sensitive projection screen, and the projection screen can be operated in a transparent state that allows light to pass through and an opaque state that can reflect light. Switch between.

In some implementation aspects of the projection display system of the present invention, the signal output unit includes a plurality of signal transmitters, and the signal transmitters are respectively arranged at a plurality of corner areas of the projection screen. The image position data includes a plurality of image position coordinates, and the image position coordinates respectively correspond to a plurality of vertices of the image. The wireless signals are respectively output by the signal transmitters, the projection screen position data includes a plurality of projection screen position coordinates corresponding to the signal transmitters, and each projection screen position coordinate is determined by the processing unit according to the corresponding The strength and direction of the wireless signal output by the signal transmitter are calculated.

In some implementation aspects of the new projection display system, the projection screen is a touch-sensitive projection screen, and after the processing unit adjusts the at least one setting parameter according to the calibration data, the projection unit projects the In the case of an image, the processing unit executes the specific processing procedure when it receives a touch operation data from the projection screen and determines that the touch operation data indicates a specific processing procedure related to the image.

In some implementation aspects of the new projection display system, before the processing unit generates the image position data and the projection screen position data, the processing unit also generates the image and controls the projection unit to project the image. After the processing unit adjusts the at least one setting parameter according to the calibration data, the image presents a user operation interface, and the processing unit is based on a touch operation position and a touch operation contained in the touch operation data. The operation type is used to determine whether the touch operation data indicates the specific processing program related to the user operation interface, and when the specific processing program is executed, the processing unit also determines the execution process and execution result of the specific processing program At least one of is present in the image to be projected by the projection unit.

The effect of the present invention is that the processing unit of the projection system can generate the correction data according to the image position data and the projection screen position data, and automatically adjust the setting parameters of the projection device according to the correction data to reduce the projected output The difference in at least one of the size and position between the image and the projection screen, so that even if the relative position relationship between the projection device and the projection screen changes, the projection system can correct the projected image by itself, It does not need to be manually adjusted by the user, so it can indeed overcome the inconvenience of the prior art.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers. Moreover, the "electrical connection" mentioned in this patent specification generally refers to a wired electrical connection between multiple electronic devices/devices/components connected through conductive materials, and a radio connection through wireless communication technology for wireless signal transmission. . Furthermore, the "electrical connection" mentioned in this patent specification also generally refers to the "direct electrical connection" formed by the direct connection between two electronic equipment/devices/components, and the “direct electrical connection” between two electronic equipment/devices/components. "Indirect electrical connection" formed by connecting other electronic equipment/devices/components.

1, a first embodiment of the new projection display system 1 includes a projection device 11, a projection screen 12, a signal output unit 13, and a processing unit 14. The projection device 11 includes a projection unit 111, A photographing unit 112, a signal receiving unit 113, and a storage unit 114.

In this embodiment, the projection unit 111 is implemented as a projection lens, the photographing unit 112 is implemented as a photographing lens, the signal receiving unit 113 is implemented as a wireless signal receiver, and the storage unit 114 For example, it is implemented as an internal memory of the projection device 11.

In more detail, the signal receiving unit 113 can be implemented as an infrared receiver in this embodiment. However, in other embodiments, the signal receiving unit 113 can also be implemented as Bluetooth, Wi-Fi, ZigBee or other types of wireless signal receivers are not limited to this embodiment. In addition, the projection unit 111, the photographing unit 112, and the signal receiving unit 113 are, for example, disposed on the same side (for example, the front side of the body) of a body (not shown) of the projection device 11 and all face in the same direction. . More specifically, if the direction the projection unit 111 faces is taken as a projection direction, the photographing unit 112 and the signal receiving unit 113 are also disposed on the body facing the projection direction, so that the projection The unit 111 can project in the projection direction, the photographing unit 112 can photograph in the projection direction, and the signal receiving unit 113 can receive wireless signals in the projection direction.

The storage unit 114 is installed with an operating system, for example, and stores a plurality of setting parameters related to the projection unit 111. More specifically, the operating system may be, for example, an open operating system (such as an Android system, but not limited to this) that uses a graphical user interface (Graphical User Interface). On the other hand, the setting parameters are, for example, used to set the projection mode of the projection unit 111, and can be used to adjust the position, angle, size, shape, etc. of the image projected by the projection unit 111, more specifically, for example Such setting parameters may include, for example, an image horizontal offset setting parameter, an image vertical offset setting parameter, an image rotation angle setting parameter, a projection focal length setting parameter, an image size setting parameter, and a trapezoidal image correction setting parameter , One barrel type image correction setting parameter, one grid type image correction setting parameter, but not limited to this.

In this embodiment, the projection screen 12 is implemented as a touch-sensitive projection screen that is rectangular in shape and is realized by, for example, Smart Glass. More specifically, the projection screen 12 of this embodiment includes, for example, a touch screen. The control panel 121 and a touch signal processor 122 electrically connected to the touch panel 121, and the touch panel 121 may, for example, use capacitive touch technology, resistive touch technology, infrared touch technology or acoustic wave type What is achieved by touch technology, but not limited to this. Furthermore, in this embodiment, the projection screen 12 further includes, for example, a dimming film layer. The dimming film layer may also be referred to as a polymer dispersed liquid crystal (PDLC) layer, and For example, it is made of polymer liquid crystal materials. With the dimming film layer, the projection screen 12 can be operated by the user to switch between a transparent state that allows light to pass through and an opaque state that can reflect light (that is, not let light pass). In more detail, when the light-adjustable film layer is energized, the polymer liquid crystals of the light-adjustable film layer will be arranged in a specific direction in order to allow light to pass through, whereby the projection screen 12 will be in the transparent On the other hand, when the light-adjusting film layer is not energized, the polymer liquid crystals of the light-adjusting film layer are arranged in disorder, so that light cannot pass through, so that the projection screen 12 will be in the opaque state It is suitable for being projected. Moreover, in a further implementation aspect, by adjusting the energization degree of the dimming film layer, the projection screen 12 can be further placed in a translucent state between the transparent state and the opaque state. But it is not limited to this.

It is supplemented that, in a simplified embodiment, the projection screen 12 can be implemented as a combination of a projection screen and a plurality of sensing elements (such as electrodes, not shown in the figure), more specifically, these The sensing element is arranged on the projection screen and used for sensing touch operation, thereby achieving the integration of the projection screen and the sensing element to provide a touch sensing function. In addition, in some embodiments, the projection screen 12 can also be implemented as a general projection screen, and does not necessarily need to include the touch panel 121 and the dimming film layer in the above-mentioned embodiments. In other words, the projection screen 12 does not necessarily have a touch sensing function and a function of switching between a transparent state and an opaque state. In short, the specific implementation aspect of the projection screen 12 is not limited to this embodiment.

The signal output unit 13 includes a plurality of signal transmitters 131, and the signal transmitters 131, for example, are respectively arranged at a plurality of corner areas of the projection screen 12, and are used for outputting a plurality of signal receiving units. 113 wireless signal received. More specifically, in this embodiment, the number of the signal transmitters 131 is, for example, four, and the four signal transmitters 131 are, for example, respectively disposed at the four corner regions of the projection screen 12, that is, The four apexes of the projection screen 12 are located. On the other hand, in accordance with the implementation aspect (infrared receiver) of the signal receiving unit 113 in this embodiment, the four signal transmitters 131 are respectively implemented as four infrared transmitters in this embodiment, for example. . However, it should be understood that in other embodiments, the signal transmitters 131 can also cooperate with the signal receiving unit 113 to be implemented as transmitters of other types of wireless signals (such as the aforementioned Bluetooth, Wi-Fi or ZigBee). ), but not limited to this embodiment. On the other hand, in a similar implementation aspect, the number of the signal transmitters 131 can also be, for example, two, and the two signal transmitters 131 are, for example, respectively disposed on two diagonals of the projection screen 12. In other similar implementations, the number of the signal transmitters 131 can also be three, five or more. In general, the signal output unit 13 only needs to have two The signal transmitter 131 can be implemented by being installed in two corner areas of the projection screen 12 that are diagonal to each other, so the specific implementation of the signal output unit 13 is not limited to this embodiment.

The processing unit 14 is electrically connected to the projection unit 111, the photographing unit 112, the signal receiving unit 113, the storage unit 114, the signal transmitters 131 of the signal output unit 13, and the touch signal processing of the projection screen 12 Maker 122, but not limited to this. More specifically, in this embodiment, the processing unit 14 is, for example, implemented as a central processing unit arranged inside the body of the projection device 11, and the processing unit 14 can be run and installed in the storage unit 114 According to the setting parameters, the projection unit 111 is controlled to perform projection. In other words, in this embodiment, the processing unit 14 is included in the projection device 11, for example, as shown in FIG. 1, but it is not limited to this.

It is supplemented that the projection device 11, the signal output unit 13, and the processing unit 14 are collectively used as a projection system 10 included in the projection display system 1 in this embodiment, and the processing unit 14 is used in this embodiment. In the example, for example, the projection unit 111, the shooting unit 112, the signal receiving unit 113, and the storage unit 114 are electrically connected in a wired manner, and the signal transmitters 131 and the touch signal processing are electrically connected in a wireless manner. Maker 122, but not limited to this.

Referring to FIGS. 1 and 2 at the same time, the following exemplarily describes in detail how the projection system 10 of this embodiment implements a projection method. It should be understood that the premise that the projection method is implemented is that the projection device 11 and the projection screen 12 are arranged opposite to each other, that is, the projection unit 111, the photographing unit 112 and the signal receiving of the projection device 11 The units 113 all face the projection screen 12. In addition, during the implementation of the projection method of this embodiment, the projection screen 12 is adapted to be switched to the opaque state.

First, in step S1, the processing unit 14 generates an image, and controls the projection unit 111 to project the image. Since the projection unit 111 projects toward the projection screen 12, at least a part of the image can be projected on the projection screen 12. However, in order to facilitate the description of the subsequent steps of the projection method, it is assumed here that the position of the image and The projection screen 12 is offset. It is supplemented that step S1 is used as a projection step of this embodiment, and can be automatically executed by the processing unit 14 when the projection device 11 is turned on, and the image can be presented in step S1, for example A splash screen, but not limited to this. Then, the flow proceeds to step S2.

In step S2, when the projection unit 111 projects the image toward the projection screen 12, the processing unit 14 controls the photographing unit 112 to shoot, and obtains a photographing result from the photographing unit 112. Specifically, the shooting result is produced by the shooting unit 112 and the image projected by the projection unit 111 is presented. Then, the flow proceeds to step S3.

In step S3, the processing unit 14 generates an image location data indicating the location of the image according to the shooting result. In this embodiment, the image position data includes, for example, four image position coordinates, the four image position coordinates, for example, respectively correspond to the four vertices of the projected image, and each image position coordinate indicates, for example, The position of the vertex corresponding to itself.

In more detail, the processing unit 14 generates the image location data by, for example, first performing image recognition on the shooting result, so as to identify the edge of the image in the shooting result according to changes in color and contrast of light and dark, and then The four vertices of the image in the shooting result are identified, and then the four image position coordinates corresponding to the four vertices are calculated. Moreover, in this embodiment, each image position coordinate can be, for example, a two-dimensional coordinate. However, in other embodiments, each image position coordinate can also be implemented as a three-dimensional coordinate, instead of using this embodiment. Is limited.

It is supplemented that the image position coordinates are, for example, calculated by the processing unit 14 using a preset reference point as the origin of the coordinate system, and the reference point may, for example, represent the position of the photographing unit 112. Or it can also represent the position of the signal receiving unit 113, but it is not limited to this. In addition, in a similar implementation aspect, the image position data may also include only two image position coordinates, and the two image position coordinates, for example, correspond to two diagonal vertices of the image, and the other In a similar implementation aspect, the image position coordinates can also be, for example, three or other numbers. In general, the image position data only needs to include at least two image position coordinates corresponding to the two vertices of the image that are diagonal to each other. It can be implemented, so the specific implementation of the image location data is not limited to this embodiment. In addition, step S2 and step S3 are, for example, collectively used as an image positioning step in this embodiment.

After the processing unit 14 generates the image location data, the flow proceeds to step S4.

In step S4, the processing unit 14 controls the signal transmitters 131 of the signal output unit 13 to respectively output a plurality of wireless signals for the signal receiving unit 113 to receive, and the signal receiving unit 113 receives the signal According to the wireless signals respectively output by the signal transmitter 131, the processing unit 14 generates a projection screen position data indicating the position of the projection screen 12 according to the wireless signals.

In this embodiment, the projection screen position data includes, for example, four projection screen position coordinates corresponding to the four signal transmitters 131, and each projection screen position coordinate can be, for example, a three-dimensional coordinate, and for example, the The processing unit 14 calculates according to the intensity and direction of the wireless signal output by the corresponding signal transmitter 131. In particular, the position coordinates of the projection screens are, for example, also calculated by the processing unit 14 using the preset reference point as the origin of the coordinate system. In other words, the position coordinates of the projection screens and the images The reference points of the position coordinates (that is, the origin of the coordinate system) are the same as each other.

It is added that in similar implementations, the number of position coordinates of the projection screen is not limited to four, but is consistent with the number of signal transmitters 131. Therefore, the specific position data of the projection screen is not limited to four. The implementation aspect is not limited to this embodiment. Moreover, in other embodiments, the position coordinates of each projection screen may also be, for example, a two-dimensional coordinate. Further, the signal output unit 13 is not limited to being controlled by the processing unit 14, but may also output the wireless signals in an independent manner. More specifically, the signal output unit 13 may be used, for example, It is not limited to this embodiment that the wireless signals are output separately by operation, or the wireless signals are output automatically when the power is supplied. In addition, step S4 is, for example, a projection screen positioning step in this embodiment.

After the processing unit 14 generates the projection screen position data, the flow proceeds to step S5.

In step S5, the processing unit 14 compares the image location data with the projection screen location data, and generates a correction data based on the comparison result between the image location data and the projection screen location data. In this embodiment, the calibration data indicates, for example, the size and position difference between the image projected by the projection unit 111 and the projection screen 12. However, in other embodiments, the calibration data may also be Only one of the size difference and the position difference between the image and the projection screen 12 is indicated, and is not limited to this embodiment.

More specifically, in step S5, the processing unit 14 compares the image position coordinates of the image position data with the projection screen position coordinates, respectively. In particular, since the image is projected on the projection screen 12, the distance between the projection device 11 and the image and the distance between the projection device 11 and the projection screen 12 can be regarded as the same as each other. In other words, for the projection device 11, the image and the depth of the projection screen 12 are the same as each other. Therefore, if the projection direction of the projection unit 111 is taken as the Z-axis direction in the three-dimensional space, the processing unit 14 in this step, for example, compares the image position coordinates with the projection screen position coordinates in the X-axis direction and The position difference in the Y-axis direction. In other words, the processing unit 14 is equivalent to comparing the projected image with the projection screen 12 on the XY plane defined by the X-axis and Y-axis. , Angle difference and area difference. Thereby, the processing unit 14 can calculate a horizontal offset distance, a vertical offset distance, a rotation offset angle, and an area difference ratio between the image and the projection screen 12, and the correction The data in this embodiment includes, for example, a pair of horizontal correction amounts corresponding to the offset distance in the horizontal direction, a pair of vertical correction amounts corresponding to the offset distance in the vertical direction, a pair of rotation correction angles corresponding to the rotation offset angle, and a The zoom correction magnification corresponding to the area difference ratio, but not limited to this.

After the processing unit 14 generates the correction data, the flow proceeds to step S6.

In step S6, the processing unit 14 adjusts at least one of the setting parameters according to the calibration data to reduce at least one of the size difference and the position difference between the image and the projection screen 12. For example, assuming that the horizontal correction amount of the correction data indicates a 1 unit distance to the right, the processing unit 14 adjusts the setting parameters, for example, including adding the current value of the image horizontal offset setting parameter. One. For another example, assuming that the rotation correction angle of the correction data indicates a counterclockwise rotation of 2 unit angles, the processing unit 14 adjusts the setting parameters may include, for example, subtracting the current value of the image rotation angle setting parameter. two. For another example, assuming that the zoom correction magnification of the correction data indicates 108%, the processing unit 14 adjusts the setting parameters, for example, including multiplying the current value of the image size setting parameter by 1.08, but not Limit this.

It is added that when the aspect ratio of the image is the same as that of the projection screen 12 (for example, both are 16:9), the processing unit 14 adjusts the setting parameters to make the image as much as possible. The size and position of is exactly the same as that of the projection screen 12. However, if the aspect ratio of the image is different from that of the projection screen 12 (for example, the image is 4:3 but the projection screen 12 is 16:9), the processing unit 14 may, for example, make the On the premise that one of the length and width of the image does not exceed the projection screen 12, the other of the length and width of the image is made to be as consistent with the projection screen 12 as possible. In other words, the processing unit 14 does not exceed the projection screen 12. Under the premise that the aspect ratio of the image is changed and the image does not exceed the scope of the projection screen 12, the image is enlarged on the projection screen 12 as much as possible. Alternatively, the processing unit 14 may first adjust the aspect ratio of the image to be consistent with the projection screen 12, and then adjust the size and position of the image to be exactly the same as the projection screen 12, but this is not the case. limit.

In addition, step S5 and step S6 are, for example, collectively used as an image correction step in this embodiment.

After the processing unit 14 completes the adjustment of the setting parameters according to the calibration data, the flow proceeds to step S7.

In step S7, when the projection unit 111 continues to project the image, when the processing unit 14 receives a touch operation data from the projection screen 12, the processing unit 14 determines whether the touch operation data is Indicate a specific processing program related to the image, and when the processing unit 14 determines that the result is yes, the processing unit 14 executes the specific processing program, and compares the execution process and execution result of the specific processing program among them At least one is present in the image to be projected by the projection unit 111.

In more detail, in this embodiment, the touch operation data is, for example, generated by the touch signal processor 122 of the projection screen 12 according to the touch operation on the touch panel 121, and the touch The signal processor 122 provides the touch operation data to the processing unit 14 in a wireless communication manner, for example. In addition, the touch operation data includes, for example, a touch operation position and a touch operation type. The touch operation position includes, for example, one or more touch coordinates, and the touch operation type indicates, for example, a single One of, but not limited to, one of a tap touch operation, a double tap touch operation, a long press touch operation, a sliding touch operation, a drag touch operation, and a zoom touch operation.

On the other hand, in step S7, the image, for example, presents a user operation interface included in the operating system, and the specific processing procedure, for example, corresponds to the user operation interface presented by the image. Moreover, when the processing unit 14 receives the touch operation data, the processing unit 14 determines whether the touch operation data indicates the corresponding user operation interface according to the touch operation position and the touch operation type, for example. The specific handler. More specifically, the processing unit 14 determines whether there is a virtual object (such as a button) in the position indicated by the touch operation position in the user operation interface, and if the result of the determination is yes, then determine Whether the type of touch operation matches the operation mode supported by the virtual object, but it is not limited to this.

For example, suppose the processing unit 14 determines that the touch operation data indicates that a button in the user operation interface (for example, a button with a function of "close window") is pressed, then the processing unit 14 The specific processing program executed is, for example, hiding a window corresponding to the button in the screen. For another example, if the processing unit 14 determines that the touch operation data indicates that a picture in the user operation interface is swiped to the left, the specific processing procedure executed by the processing unit 14 is, for example, The next picture of the picture is presented in the picture. It should be understood that the mechanism by which the processing unit 14 executes the corresponding specific processing procedure according to the touch operation data is similar to the operation mechanism of the existing touch electronic device 15, so it will not be repeated here.

In addition, step S7 is, for example, used as a touch operation processing step in this embodiment. Through the touch operation processing step, the user can directly perform a touch operation on the projection screen 12 to achieve the effect of interacting with the projection screen 12. It is supplemented that the arrangement of multiple sensing elements (such as electrodes, not shown in the figure) included in the touch panel 121 (such as the length, width, number, and spacing of the sensing elements) is Corresponding to the size specifications of the projection screen 12, and the coordinate system used by the touch signal processor 122 to calculate the touch operation position of the touch operation data is the same as that used by the processing unit 14 to calculate the projection screen position data The coordinates used in the position coordinates of the projection screens are related to each other and can be mapped and matched with each other. In this way, after the image correction step (that is, step S5 and step S6) is performed, not only the size and position of the image projected by the projection device 11 are matched to the projection screen 12, but the touch signal processor 122 The calculated touch operation position can also be correctly matched with the size specification of the projection screen 12, whereby the touch operation data can be correctly judged and processed by the processing unit 14, and accurate touch operation can be realized. Control operation function, in this way, the user can smoothly use the projected image to perform touch operations.

It is worth mentioning that if the user wants to use the projected image to give a presentation or speech, the user can directly control the content presented by the image by touching the projection screen 12, without the need to control The image is specially used to operate other devices (such as a computer). In this way, the projection screen 12 can make the user's presentation or speech more smoothly. On the other hand, compared to the touch-sensitive liquid crystal screen in the prior art, since the color liquid crystal display panel is expensive to manufacture, this embodiment can effectively save costs when a large-size screen is required.

The above is an example description of the projection method of the first embodiment of the new type. It is added that although the projection method of this embodiment first performs the image positioning step (that is, step S2 and step S3), and then performs the projection screen positioning step (that is, step S4), however, in actual implementation In the aspect, the execution sequence of the image positioning step and the projection screen positioning step may also be the opposite of this embodiment, or be performed simultaneously through multiplexing, and is not limited to this embodiment. On the other hand, in a simplified embodiment where the projection screen 12 is implemented as a general projection screen (that is, it does not have the touch sensing function), the projection method does not include the touch operation processing step (that is, it does not include the step S7).

The present invention also provides a second embodiment of the projection display system 1, and the main difference between the second embodiment and the first embodiment lies in the specific implementation of the processing unit 14. 3, in the second embodiment, the processing unit 14 is, for example, implemented as a central processing unit included in an electronic device 15, and can communicate with the projection device 11 via a wireless network, for example. 115 communicate with each other. More specifically, in the second embodiment, the electronic device 15 may be, for example, a notebook computer, a desktop computer, a tablet computer, or a smart phone, and the electronic device 15 may be installed in the electronic device 15 for example. The application program of the projection device 11 is remotely controlled, whereby the user can operate the electronic device 15 to enable the projection system 10 to implement the projection method.

Moreover, in an implementation similar to the second embodiment, the processing unit 14 may also include the central processing unit of the electronic device 15 and the central processing unit 115 of the projection device 11, that is, the projection method Steps S1 to S7 in the above may be performed by the electronic device 15 and the projection device 11 in a joint division of labor. For example, step S1 to step S6 can be executed by the central processing unit 115 of the projection device 11, and step S7 can be executed by the central processing unit of the electronic device 15. However, the electronic device 15 and The division of labor of the projection device 11 can be changed freely, and is not limited to this example.

In summary, the processing unit 14 of the projection system 10 can generate the correction data according to the image position data and the projection screen position data, and automatically adjust the setting parameters of the projection device 11 according to the correction data to reduce the size of the projection device. The difference in at least one of the size and position between the projected image and the projection screen 12, so that even if the relative positional relationship between the projection device 11 and the projection screen 12 changes, the projection system 10 can correct itself The projected image does not need to be manually adjusted by the user, so it can indeed achieve the purpose of costing the new model.

However, the above are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

1: Projection display system 10: Projection system 11: Projection device 111: Projection unit 112: Shooting unit 113: signal receiving unit 114: storage unit 115: central processing unit 12: Projection screen 121: Touch Panel 122: Touch signal processor 13: Signal output unit 131: Signal transmitter 14: processing unit 15: Electronic device S1~S7: steps

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, among which: Fig. 1 is a block diagram of a first embodiment of the new projection display system; Fig. 2 is a flowchart illustrating how to implement a projection method in the first embodiment; and FIG. 3 is a block diagram of a second embodiment of the projection display system of the present invention.

1: Projection display system

10: Projection system

11: Projection device

111: Projection unit

112: Shooting unit

113: signal receiving unit

114: storage unit

12: Projection screen

121: Touch Panel

122: Touch signal processor

13: Signal output unit

131: Signal transmitter

14: processing unit

Claims (9)

A projection system suitable for a projection screen. The projection system includes: A projection device including a projection unit, a photographing unit and a signal receiving unit; A signal output unit adapted to be installed on the projection screen; and A processing unit electrically connected to the projection unit, the photographing unit and the signal receiving unit; wherein: In the case that the projection unit projects an image toward the projection screen, the processing unit obtains a shooting result generated by the shooting unit and presents the image from the shooting unit, and generates an indication of the image according to the shooting result Image location data of the location; The signal receiving unit receives a plurality of wireless signals output by the signal output unit, and the processing unit generates a projection screen position data indicating the position of the projection screen according to the wireless signals; The processing unit generates a calibration data according to the comparison result between the image position data and the projection screen position data, the calibration data indicates the difference of at least one of the size and the position between the image and the projection screen, the The processing unit adjusts at least one setting parameter related to the projection unit according to the calibration data to reduce the difference in at least one of the size and position between the image and the projection screen. The projection system according to claim 1, wherein: The signal output unit includes a plurality of signal transmitters, and the signal transmitters are adapted to be respectively arranged at a plurality of corner areas of the projection screen; The image position data includes a plurality of image position coordinates, and the image position coordinates respectively correspond to a plurality of vertices of the image; and The wireless signals are respectively output by the signal transmitters, the projection screen position data includes a plurality of projection screen position coordinates corresponding to the signal transmitters, and each projection screen position coordinate is determined by the processing unit according to the corresponding The strength and direction of the wireless signal output by the signal transmitter are calculated. The projection system according to claim 1, wherein the projection screen is a touch-sensitive projection screen, and after the processing unit adjusts the at least one setting parameter according to the calibration data, the image is projected on the projection unit In the case of, the processing unit executes the specific processing program when it receives a touch operation data from the projection screen and determines that the touch operation data indicates a specific processing program related to the image. The projection system according to claim 3, wherein: Before the processing unit generates the image position data and the projection screen position data, the processing unit also generates the image and controls the projection unit to project the image; After the processing unit adjusts the at least one setting parameter according to the calibration data, the image presents a user operation interface, and the processing unit is based on a touch operation position and a touch operation contained in the touch operation data. The operation type is used to determine whether the touch operation data indicates the specific processing program related to the user operation interface, and when the specific processing program is executed, the processing unit also determines the execution process and execution result of the specific processing program At least one of is present in the image to be projected by the projection unit. A projection display system, including: A projection device including a projection unit, a photographing unit and a signal receiving unit; A projection screen A signal output unit for setting on the projection screen; and A processing unit electrically connected to the projection unit, the photographing unit and the signal receiving unit; wherein: In the case that the projection unit projects an image toward the projection screen, the processing unit obtains a shooting result generated by the shooting unit and presents the image from the shooting unit, and generates an indication of the image according to the shooting result Image location data of the location; The signal receiving unit receives a plurality of wireless signals output by the signal output unit, and the processing unit generates a projection screen position data indicating the position of the projection screen according to the wireless signals; The processing unit generates a calibration data according to the comparison result between the image position data and the projection screen position data, the calibration data indicates the difference of at least one of the size and the position between the image and the projection screen, the The processing unit adjusts at least one setting parameter related to the projection unit according to the calibration data to reduce the difference in at least one of the size and position between the image and the projection screen. The projection display system according to claim 5, wherein the projection screen is a touch-sensitive projection screen, and the projection screen can be operated in a transparent state that allows light to pass through and an opaque state that can reflect light Switch between. The projection display system according to claim 5, wherein: The signal output unit includes a plurality of signal transmitters, and the signal transmitters are respectively arranged at a plurality of corner areas of the projection screen; The image position data includes a plurality of image position coordinates, and the image position coordinates respectively correspond to a plurality of vertices of the image; and The wireless signals are respectively output by the signal transmitters, the projection screen position data includes a plurality of projection screen position coordinates corresponding to the signal transmitters, and each projection screen position coordinate is determined by the processing unit according to the corresponding The strength and direction of the wireless signal output by the signal transmitter are calculated. The projection display system according to claim 5, wherein the projection screen is a touch-sensitive projection screen, and after the processing unit adjusts the at least one setting parameter according to the calibration data, the projection unit projects the In the case of an image, the processing unit executes the specific processing procedure when it receives a touch operation data from the projection screen and determines that the touch operation data indicates a specific processing procedure related to the image. The projection display system according to claim 8, wherein: Before the processing unit generates the image position data and the projection screen position data, the processing unit also generates the image and controls the projection unit to project the image; After the processing unit adjusts the at least one setting parameter according to the calibration data, the image presents a user operation interface, and the processing unit is based on a touch operation position and a touch operation contained in the touch operation data. The operation type is used to determine whether the touch operation data indicates the specific processing program related to the user operation interface, and when the specific processing program is executed, the processing unit also determines the execution process and execution result of the specific processing program At least one of is present in the image to be projected by the projection unit.

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