JP2015087457A - Image display system, projector, and multi-screen display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve picture quality in the case of performing multi-screen display.SOLUTION: In a main projector, an image division/distribution part 11 divides an image based on an input image signal into a first region to be projected by the main projector and a second region to be projected by a sub-projector, and outputs a first image signal showing the first region, and supplies a second image signal showing the second region to the sub-projector. A display part 15 forms an image of the first region based on the first image signal. In the sub-projector, the display part 15 forms an image of the second region based on the second image signal. A CPU part 10 of each of both projectors adjusts the size of each of the divided images formed at their mutual display parts 15 to make equal the resolutions of image forming regions. The CPU part 10 of the sub-projector controls a projection part 16 to project the image of the second region in the same projection size as that of the image of the first region.

Description

  The present invention relates to a multi-screen display technique for displaying a single large screen by connecting projection images from a plurality of projectors.

  Patent Document 1 describes an image display system that performs multi-screen display. FIG. 1 shows an outline of the image display system.

  Referring to FIG. 1, the image display system includes two projectors 101 and 102, an image signal generator 103, and an image signal distributor 104.

  The image signal generator 103 includes a personal computer or the like, and supplies an image signal S0 such as a video signal to the image signal distributor 104.

  The image signal distributor 104 generates two image signals S1 and S2 from the image signal S0 supplied from the image signal generator 103, supplies the image signal S1 to the projector 101, and supplies the image signal S2 to the projector 102. . Here, the image signals S1 and S2 are signals of the same image as the image signal S0.

  The projectors 101 and 102 are arranged side by side, and their panel resolutions are the same. For example, each of the projectors 101 and 102 includes a display device such as a liquid crystal panel having a panel resolution of XGA (1024 dots × 768 lines), and projects an image formed by the display device onto the screen 100.

  In the projector 101, the display device forms a partial image including a predetermined region of the image based on the image signal S 1, and this partial image is projected on the screen 100 as an XGA image 105. If the resolution of the partial image is different from XGA, the resolution of the partial image is converted so as to conform to XGA.

  In the projector 102, the display device forms a partial image including a predetermined region of the image based on the image signal S 2, and the partial image is projected on the screen 100 as an XGA image 106. If the resolution of the partial image is different from XGA, the resolution of the partial image is converted so as to conform to XGA.

  The images 105 and 106 correspond to left and right images when the original image based on the image signal S0 is divided into two in the horizontal direction, and have the same resolution and aspect ratio. An image 107 corresponding to the original image is obtained by connecting the images 105 and 106 on the screen 100 after aligning the widths in the vertical direction.

  In the above image system, three or more projectors may be used. In this case, the image signal distributor 104 distributes the image signal to each projector. However, the panel resolution of each projector is the same.

JP 2006-109168 A

In the image display system disclosed in Patent Document 1, as the projector 101, when the mutual panel resolution use different projectors, the resolution and aspect ratio of the image 105 and 106 projected by the projector 101 and 102 each other physician Therefore, there is a problem that the image quality at the time of multi-screen display is deteriorated.

  For example, a projector having a display device with a panel resolution of XGA (1024 dots × 768 lines) is used as the projector 101, and a projector having a display device with a panel resolution of WXGA (1280 dots × 800 lines) is used as the projector 102. The following problems arise when the projectors 101 and 102 project a partial image obtained by dividing the image of 2048 dots × 768 lines into left and right parts.

  In the projector 101, the resolution of the partial image is XGA, which matches the panel resolution (XGA) of the display device. Therefore, an XGA partial image is formed on the display device without resolution conversion, and an XGA image 105 is projected. The aspect ratio of the XGA image 105 is 4: 3.

  On the other hand, in the projector 102, the resolution of the partial image is XGA, which is different from the panel resolution (WXGA) of the display device. Therefore, the resolution of the partial image is converted so as to conform to WXGA. With this resolution conversion, a WXGA partial image is formed on the display device, and a WXGA image 106 is projected. The aspect ratio of the WXGA image 106 is 16:10.

  As described above, the resolution and aspect ratio of the image 105 projected by the projector 101 are different from the resolution and aspect ratio of the image 106 projected by the projector 102. When images 105 and 106 having different resolutions and aspect ratios are connected with the same width in the vertical direction to form one image 107, the boundary between the images 105 and 106 depends on the difference in resolution and aspect ratio. May be observed, or the subject straddling the images 105 and 106 may be uncomfortable.

  Further, in the image display system described in Patent Document 1, the image signal distributor 104 for distributing the image signal to each projector is necessary in addition to the projector, so that the system becomes large-scale. There is also.

  An object of the present invention is to solve the above-described problems and improve the image quality when performing multi-screen display using a plurality of projectors having different panel resolutions. Image display system, projector, and multi-screen display It is to provide a method.

To achieve the above object, according to one aspect of the present invention, the image processing apparatus includes a first projector that receives an image signal and at least one second projector that communicates with the first projector. An image display system in which the entire image is displayed by projecting a partial image of an image based on a signal by the first and second projectors,
The first projector is
A divided image signal indicating a divided image obtained by dividing an image based on the image signal is generated according to the number of the first projector and the second projector, and the corresponding divided image signal is supplied to the second projector. An image segmentation / distribution unit;
A first image forming unit that includes a first panel unit having a first panel resolution and that forms a divided image based on the divided image signal generated by the image dividing / distributing unit on the first panel unit. When,
A first projection unit that projects an image formed by the first panel unit;
A first control unit that controls an image forming operation in the first image forming unit,
The second projector is
A second image forming unit that includes a second panel unit having a second panel resolution, and forms a divided image based on the divided image signal supplied from the image dividing / distributing unit on the second panel unit; ,
A part of the lens is movable, and the projection position and the projection size of the image are changed according to the movement direction and the movement amount of the lens, and the image formed by the second panel unit is projected. A second projection unit that
A second control unit that controls an image forming operation in the second image forming unit and a projection operation in the second projection unit;
Each of the first and second control units adjusts the size of the divided image formed on each panel unit according to the first and second panel resolutions of the first and second panel units. The resolution of the image forming area where the image is formed is equal, and the second control unit is configured to equalize the size of the projection image by moving the lens of the second projection unit. An image display system is provided.

According to another aspect of the present invention, a partial image of an image based on an image signal received from an external device is projected, and the projected partial image and the partial image of the image projected by another projector are used to generate the image. A projector that displays the whole image,
An image division / distribution unit that generates a divided image signal indicating a divided image obtained by dividing an image based on the image signal according to the number of the projectors and other projectors, and supplies the corresponding divided image signal to the other projector When,
An image forming unit that includes a panel unit, and forms a divided image based on the divided image signal generated by the image dividing / distributing unit in the panel unit;
A projection unit that projects an image formed by the panel unit;
A control unit for controlling an image forming operation in the image forming unit,
The control unit adjusts the size of the divided image formed on the panel unit according to the panel resolution of the panel unit and the panel resolution of the other projector, and the panel unit of the panel unit and the other projector. A projector is provided in which the resolution of the image forming area in which each image is formed is equal.

According to still another aspect of the present invention, communication is performed with another projector that receives an image signal, and a partial image of the image based on the image signal is projected. The projected partial image and the other projector A projector that displays the entire image by a partial image of the image projected by
A receiving unit that receives a corresponding divided image signal among divided image signals indicating divided images obtained by dividing the image based on the image signal according to the number of the projectors and the other projectors from the other projector;
An image forming unit that includes a panel unit, and forms a divided image by the divided image signal received by the receiving unit at the panel unit;
A projection unit configured to project an image formed by the panel unit, wherein a part of the lens is movable, and a projection position and a projection size of the image are changed according to a movement direction and a movement amount of the lens. When,
A control unit that controls an image forming operation in the image forming unit and a projection operation in the projection unit;
The control unit adjusts the size of the divided image formed on the panel unit according to the panel resolution of the panel unit and the panel resolution of the other projector, and the panel unit of the panel unit and the other projector. A projector is provided in which the resolutions of the image forming areas in which the respective images are formed are made equal, and the sizes of the projected images are made equal by moving the lens of the second projection unit.

According to another aspect of the present invention, an image based on the image signal includes a first projector that receives an image signal and at least one second projector that communicates with the first projector. Is a multi-screen display method performed in an image display system in which the entire image is displayed by projecting the partial image of the first and second projectors,
The first projector includes an image dividing / distributing unit, a first image forming unit including a first panel unit having a first panel resolution, a first projection unit, and a first control unit. The second projector includes a second image forming unit having a second panel unit having a second panel resolution, a part of the lens is movable, and the second projector can move according to a moving direction and a moving amount of the lens. A second projection unit and a second control unit configured to change a projection position and a projection size of the image;
The image division / distribution unit generates a divided image signal indicating a divided image obtained by dividing an image based on the image signal in accordance with the number of the first projector and the second projector, and outputs the corresponding divided image signal. Supplying the second projector;
The first image forming unit forms a divided image based on the corresponding divided image signal generated by the image dividing / distributing unit on the first panel unit,
The first projection unit projects an image formed by the first panel unit;
The second image forming unit forms a divided image based on the corresponding divided image signal generated by the image dividing / distributing unit on the second panel unit,
The second projection unit projects an image formed by the second panel unit;
Each of the first and second control units adjusts the size of the divided image formed on each panel unit according to the first and second panel resolutions of the first and second panel units. And the resolution of the image forming area where the image is formed is equal,
A multi-screen display method is provided in which the second control unit moves the lens of the second projection unit to equalize the size of the projected image.

  According to the present invention, it is possible to improve the image quality when multi-screen display is performed using a plurality of projectors having different panel resolutions.

It is a schematic diagram which shows the outline | summary of the image display system which performs the multi-screen display which is a related technique of this invention. It is a block diagram which shows the structure of the image display system of one Embodiment of this invention. It is a block diagram which shows the basic composition of the projector which comprises the image display system shown in FIG. FIG. 3 is a flowchart showing one procedure of main / sub determination performed in the image display system shown in FIG. 2. FIG. 3 is a flowchart showing a procedure of a multi-screen display operation performed by a main projector of the image display system shown in FIG. 3 is a flowchart showing a procedure of a multi-screen display operation performed by a sub projector of the image display system shown in FIG. It is a schematic diagram for demonstrating the image display system which is other embodiment of this invention. It is a schematic diagram which shows the projection image (XGA) projected by the main projector in the image display system shown in FIG. 7, and the projection image (WXGA) projected by a sub projector. It is a figure for demonstrating the preparation procedure of the lens control information performed with the sub projector in the image display system shown in FIG. 8 shows an example of a multi-screen displayed by the image display system shown in FIG. It is a schematic diagram which shows an example of the image signal supplied from a video supply apparatus. It is a schematic diagram which shows an example of the image signal regarding the image projected with a main projector. It is a schematic diagram which shows an example of the image signal regarding the image projected with a sub projector. It is a schematic diagram which shows another example of the multiscreen displayed with the image display system shown in FIG.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 2 is a block diagram showing the configuration of the image display system according to the embodiment of the present invention.

  Referring to FIG. 2, the image display system includes projectors 1 and 2 that can communicate with each other, and performs a multi-screen display by connecting projection images from the projectors 1 and 2.

  One of the projectors 1 and 2 is a main projector, and the other is a sub projector. In the example of FIG. 2, the projector 1 is a main projector and the projector 2 is a sub projector.

  Although the basic configurations of the projectors 1 and 2 are the same, the panel resolutions of the display units (display panels) are different.

  FIG. 3 shows a basic configuration of projectors used as the projectors 1 and 2.

  Referring to FIG. 3, the projector includes a CPU (Central Circuit Unit) unit 10, an image division / distribution unit 11, a resolution conversion unit 12, a panel drive unit 13, an optical unit 14, an optical unit control unit 17, a communication unit 18, and a storage. Unit 19, video input terminal 21, video output terminal 22, operation unit 23, and system bus 20.

  The optical unit 14 includes a display unit 15 that forms an image, and a projection unit 16 that projects an image formed by the display unit 15.

  The display unit 15 includes a light source, a display element such as a liquid crystal panel or a DMD (Digital Micromirror Device), an illumination optical system for irradiating the display element with light from the light source, and the like. Since these configurations are well known as the configuration of the projector, a detailed description thereof is omitted here.

  The projection unit 16 includes an adjustment unit that can adjust the projection position and the projection size of an image without moving the projector body. Examples of the adjusting means include a lens shift mechanism and a zoom focus mechanism.

  The lens shift mechanism is a mechanism that moves a part of the projection lens including a plurality of lenses in a direction intersecting the optical axis of the projection lens. According to this lens shift mechanism, the projection position of the image changes according to the moving direction and moving amount of the lens.

  The zoom focus mechanism is a mechanism that moves at least a part of the projection lens back and forth along the optical axis. According to this zoom focus mechanism, the projection size of the image changes according to the moving direction and moving amount of the lens, and the focus can be adjusted.

  The image division / distribution unit 11, the resolution conversion unit 12, the panel drive unit 13, the optical unit control unit 17, the communication unit 18, the storage unit 19, and the operation unit 23 are each connected to the CPU unit 10 via the system bus 20. .

  The storage unit 19 includes storage means for storing a program and data necessary for operating the projector. The storage means may be, for example, a semiconductor memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory).

  The CPU unit 10 operates according to a program stored in the storage unit 19, and in accordance with an instruction signal from the operation unit 23, the image division / distribution unit 11, the resolution conversion unit 12, the panel drive unit 13, and the optical unit control unit 17. And controls the operation of the communication unit 18. The CPU unit 10 refers to data stored in the storage unit 19 and stores necessary data in the storage unit 19.

  The communication unit 18 communicates with an external device (for example, a video supply device such as a personal computer or another projector). Various communication such as communication using a communication cable such as RS232C, communication using a wireless local area network (LAN) or display data channel command interface (DDC / CI) can be applied to the mutual communication.

  The operation unit 23 receives an input operation by the user and supplies an instruction signal corresponding to the input operation to the CPU unit 10. The operation unit 23 includes a plurality of operation keys, setting buttons for setting various modes, and the like. The operation unit 23 may include an external device such as a remote controller. The setting buttons include setting buttons such as a normal display mode and a multi-screen display mode.

  The normal display mode is a mode for displaying an image by a projector alone. The multi-screen display mode is a mode in which a multi-screen display is performed by connecting a projection image of the own projector and a projection image of another projector.

  When the multi-screen display button is pressed, the CPU unit 10 determines whether the projector is a main projector or a sub projector. For example, the CPU unit 10 acquires identification information of the device from a device connected to the video input terminal 21, and determines whether the device is a video supply device or a projector based on the identification information. When the identification information indicates a video supply device, it is determined that the own projector is a main projector, and when the identification information indicates a projector, it is determined that the own projector is a sub projector. Identification information of the video supply device and the projector is given in advance. If the device indicated by the identification information is neither a video supply device nor a projector, the CPU unit 10 may cause the display unit 15 to form an image including a message to that effect. Also, for example, when the identification information indicates a projector, it is determined that the own projector is a sub projector, and in other cases, for example, when the identification information cannot be obtained, it is determined that the own projector is a main projector. May be.

  The video input terminal 21 is supplied with an image signal S0 from an external video supply device or another projector. The video supply device is, for example, a personal computer or a video device.

  The image segmentation / distribution unit 11 operates in accordance with a control signal from the CPU unit 10 and receives the image signal S0 via the video input terminal 21.

  In the normal display mode, the image dividing / distributing unit 11 outputs the image signal S0 as it is as the image signals S1 and S2.

  In the case of the multi-screen display mode, when the projector is the main projector, the image dividing / distributing unit 11 outputs an image based on the image signal S0 as a first area (divided image) projected by the main projector. The image is divided into a second area (divided image) projected by the sub projector, the image signal S1 indicating the first area is supplied to the resolution converter 12, and the image signal S2 indicating the second area is output as a video. Supply to terminal 22. The first and second areas have the same resolution.

  The number of areas for dividing the image of the image signal S0 is determined by the number of projectors constituting the image display system. Information indicating the number of areas and the correspondence between areas and projectors is designated by the user when performing multi-screen display or in advance.

  For example, in the main projector, when the user presses a multi-screen display button for performing multi-screen display, the CPU unit 10 causes the display unit 15 to form a setting screen for setting information necessary for multi-screen display. The user can input information necessary for multi-screen display using the operation unit 23 while viewing the setting screen projected on the screen. Here, the information necessary for multi-screen display includes, for example, the number of areas and information on the correspondence between the areas and the projectors. In the example of FIG. 3, since the number of projectors is 2, the number of areas is 2.

  In the case of the multi-screen display mode, when the own projector is a sub projector, the image dividing / distributing unit 11 receives the image signal S2 output from the main projector as the image signal S0 via the video input terminal 21. . The image dividing / distributing unit 11 supplies the received image signal S0 as it is to the resolution converting unit 12 as the image signal S1.

  The resolution conversion unit 12 operates in accordance with a control signal from the CPU unit 10, and in the normal display mode, the resolution of the image based on the image signal S1 from the image division / distribution unit 11 is optimal for image formation on the display unit 15. (The resolution is converted to match the panel resolution of the display unit 15). In the multi-screen display mode, a control signal indicating that resolution conversion is not performed is supplied from the CPU unit 10 to the resolution conversion unit 12. In accordance with the control signal, the resolution conversion unit 12 outputs the image signal S1 from the image division / distribution unit 11 as it is without converting the resolution.

  The panel drive unit 13 drives the display unit 15 based on the image signal S1 from the resolution conversion unit 12. A display unit including the display unit 15 and the panel driving unit 13 may be used as the display unit.

  The optical unit control unit 17 controls the optical unit 14 in accordance with a control signal from the CPU unit 10, and includes a lens shift control unit 17 a that controls the lens shift mechanism of the projection unit 16 and a zoom focus mechanism of the projection unit 16. A zoom focus control unit 17b for controlling the zoom lens.

  The user can specify the shift amount (movement amount) and the shift direction (movement direction) of the lens shift mechanism by using operation keys (for example, direction keys) of the operation unit 23. Here, the shift direction is a direction that intersects the optical axis of the projection lens. The shift amount and the shift direction of the lens are designated on the basis of the state where the center of the lens coincides with the optical axis of the projection lens.

  The operation unit 23 supplies an instruction signal indicating the designated shift amount and shift direction to the CPU unit 10. Based on the instruction signal from the operation unit 23, the CPU unit 10 notifies the lens shift control unit 17a of the shift amount and the shift direction. The lens shift control unit 17a controls the lens shift mechanism based on the shift amount and the shift direction notified by the CPU unit 10.

  Further, the user can operate the zoom focus mechanism using the operation buttons (for example, zoom operation buttons and focus buttons) of the operation unit 23. The operation unit 23 supplies an instruction signal indicating the movement amount and the movement direction of the lens to the CPU unit 10 in accordance with a user operation. Here, the moving direction of the lens is a direction along the optical axis of the projection lens, and the front (projection side) or the rear (panel side) can be designated as the moving direction. The movement amount of the lens indicates the movement amount of the lens forward and backward from the reference position.

  Based on the instruction signal from the operation unit 23, the CPU unit 10 notifies the zoom focus control unit 17 b of the movement amount and the movement direction. The zoom focus control unit 17b controls the zoom focus mechanism based on the movement amount and the movement direction notified by the CPU unit 10.

  The CPU unit 10 causes the storage unit 19 to store setting values indicating the shift amount and the shift direction of the lens shift mechanism and the setting values indicating the movement amount and the moving direction of the zoom focus mechanism, respectively. May be notified to the lens shift control unit 17a or the zoom focus control unit 17b.

  For example, for a plurality of resolutions, for each resolution, a lens control information table storing each setting value of the shift amount and the shift direction of the lens shift mechanism, and each setting value of the movement amount and the movement direction of the zoom focus mechanism, You may hold | maintain in the memory | storage part 19. FIG.

  The CPU unit 10 may perform the above control (control of the lens shift control unit 17a and the zoom focus control unit 17b) instead of the optical unit control unit 17. In this case, the optical unit control unit 17 is configured by a part of the functions of the CPU unit 10.

  In addition, various setting screen information is stored in the storage unit 19, and the CPU unit 10 reads necessary setting screen information from the storage unit 19 in response to an instruction signal from the operation unit 23, and the read setting screen information. May be formed on the display unit 15 via the panel drive unit 13. In this case, when the user performs an operation of inputting or selecting information for each item on the setting screen on the operation unit 23, the operation unit 23 supplies an instruction signal corresponding to the operation to the CPU unit 10, and the CPU The unit 10 may store the setting information in the storage unit 19 based on the instruction signal from the operation unit 23.

Next, the operation of the image display system of this embodiment will be specifically described.
(1) Arrangement / Connection of Projector Refer to FIG. 2 and FIG.

The user arranges the projectors 1 and 2 at predetermined positions for performing multi-screen display. Then, the user connects the output terminal of the video supply device to the video input terminal 21 of the projector 1, and connects the video input terminal 21 of the projector 2 to the video output terminal 22 of the projector 1. Thereafter, the user turns on the power of the video supply device and the main projectors 1 and 2, and establishes communication connection between the communication unit 18 of the projector 1 and the communication unit 18 of the projector 2.
(2) Main / Sub Determination After the above setting, the user presses the multi-screen display button of the operation unit 23 in each of the projectors 1 and 2 in order to perform multi-screen display.

  In each of the projectors 1 and 2, the CPU unit 10 determines whether the own projector is a main projector or a sub projector.

  FIG. 4 shows a procedure of main / sub determination.

  The CPU unit 10 acquires identification information from the device connected to the video input terminal 21 (step S10).

  Next, the CPU unit 10 determines whether or not the identification information acquired in step S10 indicates a video supply device (step S11).

  When the determination result of step S11 is “Yes”, the CPU unit 10 determines that the projector is the main projector (step S12).

  When the determination result of step S11 is “No”, the CPU unit 10 determines whether or not the identification information acquired in step S10 indicates a projector (step S13).

  When the determination result in step S13 is “Yes”, the CPU unit 10 determines that the projector is a sub projector (step S14).

  If the determination result in step S13 is “No”, the main / sub determination is terminated. At this time, the CPU unit 10 may form an image including a predetermined message on the display unit 15.

  The main / sub determination is not limited to the determination procedure shown in FIG. The main / sub determination may be performed based on information input by the user.

  For example, an item for setting information necessary for main / sub determination may be provided as one of the items on the setting screen for setting information necessary for multi-screen display. In this case, the CPU unit 10 forms the setting screen on the display unit 15, and the user inputs necessary information for each item on the setting screen using the operation unit 23. Then, the CPU unit 10 performs main / sub determination based on information input by the user.

(3) Multi-screen display After the main / sub determination described above, a multi-screen display operation is performed in each of the projectors 1 and 2.

  FIG. 5 shows a procedure of the multi-screen display operation performed by the main projector, and FIG. 6 shows a procedure of the multi-screen display operation performed by the sub projector. Note that information necessary for multi-screen display is set in advance.

  In the following description, in order to avoid confusion, the projector 1 is described as a main projector 1 and the projector 2 is described as a sub projector 2. In addition, in each configuration illustrated in FIG. 3, a configuration in which “_1” is added to the code is a configuration of the main projector 1, and a configuration in which “_2” is added to the code is the configuration of the sub projector 2.

  First, the multi-screen display operation of the main projector 1 will be described with reference to FIGS.

  The CPU unit 10_1 shifts the operation mode of the main projector 1 to the multi-screen display mode (step S20). Then, the image division / distribution unit 11_1 determines whether or not the resolution of the image signal S0_1 supplied to the video input terminal 21_1 is higher than the panel resolution of the display unit 15_1 (Step S21).

  The determination in step S21 may be performed by the CPU unit 10_1. In this case, the image division / distribution unit 11_1 notifies the CPU unit 10_1 of the resolution of the image signal S0_1 supplied to the video input terminal 21_1, and the CPU unit 10_1 has the resolution notified from the image division / distribution unit 11_1. It is determined whether or not the panel resolution of the display unit 15_1 is higher.

  When the determination result of step S21 is “No”, the CPU unit 10_1 shifts the operation mode of the main projector 1 to the normal display mode (step S22).

  When the determination result of step S21 is “Yes”, the CPU unit 10_1 acquires the panel resolution information of the display unit 15_2 from the sub projector 2 via the communication unit 18_1 (step S23). Then, the CPU unit 10_1 compares the panel resolution of the display unit 15_1 of the main projector 1 with the panel resolution of the display unit 15_2 of the sub projector 2 (step S24).

  In the comparison in step S23, when the panel resolution of the display unit 15_1 is lower than the panel resolution of the display unit 15_2, the CPU unit 10_1 performs image division processing based on the panel resolution of the display unit 15_1 on the image division / distribution unit 11_1. (Step S25).

  In the image division processing based on the panel resolution of the display unit 15_1, the CPU unit 10_1 uses the resolution of the area when dividing the image based on the image signal S0_1 into a plurality of areas so as to match the panel resolution of the display unit 15_1. To decide. The resolution suitable for the panel resolution of the display portion 15_1 indicates a resolution suitable for image formation in the display portion 15_1. The CPU unit 10_1 supplies image division information including information on the number of areas, area resolution, and area / projector correspondence to the image division / distribution unit 11_1.

  The image division / distribution unit 11_1 divides an image based on the image signal S0_1 into a plurality of areas based on the image division information. Here, since the number of projectors is 2 and the number of areas is 2, the image division / distribution unit 11_1 uses the first area and the sub projectors that project an image based on the image signal S0_1. The image is divided into the second area to be projected, the image signal S1_1 indicating the first area is supplied to the resolution converter 12, and the image signal S2_1 indicating the second area is supplied to the video output terminal 22_1. The resolutions of the first and second areas are resolutions that match the panel resolution of the display unit 15_1, and are both the same.

  In the comparison in step S23, when the panel resolution of the display unit 15_1 is higher than the panel resolution of the display unit 15_2, the CPU unit 10_1 performs image division processing based on the panel resolution of the display unit 15_2 on the image division / distribution unit 11_1. (Step S26).

  In the image division processing based on the panel resolution of the display unit 15_2, the CPU unit 10_1 determines the resolution of the area when dividing the image based on the image signal S0_1 into a plurality of areas so as to match the panel resolution of the display unit 15_2. To decide. The resolution suitable for the panel resolution of the display unit 15_2 indicates a resolution suitable for image formation in the display unit 15_2. The CPU unit 10_1 supplies image division information including information on the number of areas, area resolution, and area / projector correspondence to the image division / distribution unit 11_1.

  The image division / distribution unit 11_1 divides an image based on the image signal S0_1 into a plurality of areas based on the image division information. Here, since the number of projectors is two and the number of areas is two, the image division / distribution unit 11_1 outputs an image based on the image signal S0_1 to the first area and the sub-projector projected by the main projector. The image signal S1_1 indicating the first area is supplied to the resolution converter 12, and the image signal S2_1 indicating the second area is supplied to the video output terminal 22. The resolutions of the first and second areas are resolutions that match the panel resolution of the display unit 15_2 and are the same.

  After the image division processing in step S25 or S26, the CPU unit 10_1 supplies the image signal S1_1 output from the image division / distribution unit 11_1 to the panel drive unit 13_1 as it is without performing resolution conversion in the resolution conversion unit 12_1. . The panel drive unit 13_1 causes the display unit 15_1 to form an image of the first area based on the image signal S1_1. And projection part 16_1 projects the picture of the 1st area formed in display part 15_1 on a screen (Step S27).

  Next, the multi-screen display operation of the sub projector 2 will be described with reference to FIGS. 4 and 6.

  The CPU unit 10_2 shifts the operation mode of the sub projector 2 to the multi-screen display mode (step S30). Thereafter, the image dividing / distributing unit 11_2 receives the image signal S2_1 indicating the image of the second area output from the main projector 1 as the image signal S0_2 via the video input terminal 21_2 (step S31). Then, according to the control signal from the CPU unit 10_2, the image dividing / distributing unit 11_2 supplies the image signal S0_2 (second area) as the image signal S1_2 to the resolution converting unit 12_2 as it is, and further, the image signal S0_2 (second area). ) Is notified to the CPU unit 10_2.

  Next, the CPU unit 10_2 searches the lens control information table held in the storage unit 19_2 (step S32), and determines whether there is a setting value corresponding to the resolution of the image signal S0_2 (second area). Determination is made (step S33).

  When the determination result of step S33 is “Yes”, the CPU unit 10_2 acquires a corresponding set value from the lens control information table and supplies the set value to the optical unit control unit 17_2. Then, the optical unit control unit 17_2 controls the lens shift function and the zoom focus function of the projection unit 16_2 based on the set value from the CPU unit 10_2 (step S34).

  Before or after the processing of steps S32 to S34, or in parallel with the processing of steps S32 to S34, the CPU 10_2 converts the image signal S1_2 output from the image dividing / distributing unit 11_2 to the resolution by the resolution converting unit 12_2. Without conversion, it is directly supplied to the panel drive unit 13_2. Then, the panel drive unit 13_2 causes the display unit 15_2 to form an image of the second area based on the image signal S1_2.

  Next, the projection unit 16_2 projects the image of the second area formed by the display unit 15_2 to a predetermined position on the screen with the same size as the image of the first area projected by the main projector 1. (Step S35).

  When the determination result in step S33 is “No”, the CPU unit 10_2 determines the lens control information (the lens movement amount and the movement direction of each of the lens shift mechanism and the zoom focus mechanism) for the resolution of the image in the second area. Is registered in the lens control information table (step S36).

  In the lens control information registration process, the CPU unit 10_2 first instructs the optical unit control unit 17_2 to set the lens shift mechanism and the zoom focus mechanism to the initial states, and the optical unit control unit 17_2 performs the lens shift mechanism and the zoom function. Set each focus mechanism to the initial state.

  Here, the initial state of the lens shift mechanism indicates a state in which the optical axis of the moving lens coincides with the optical axis of the projection lens. When the image projection position is adjusted by the lens shift mechanism, the movement amount and movement direction (shift direction) of the lens are detected based on this state.

  In addition, the initial state of the zoom focus mechanism indicates a state in which focus is achieved at a predetermined magnification. When the projection size of the image is adjusted by the zoom focus mechanism, the moving amount and moving direction of the lens are detected based on this state.

  Next, the user uses the operation unit 23_2 to project the image of the second area at a predetermined position adjacent to the image of the first area projected from the main projector 1, and The lens shift mechanism and the zoom focus mechanism are operated so that the size (vertical width) of the image in the vertical direction matches the size (vertical width) of the image in the first area in the vertical direction.

  After the above operation, the CPU unit 10_2 acquires values indicating the amount and direction of movement of the lens from the initial state for each of the lens shift mechanism and the zoom focus mechanism, and uses the acquired value as the resolution of the image of the second area. It stores in the lens control information table together with the resolution identification information shown. Here, the value indicating the movement amount and the movement direction of the lens from the initial state can be acquired based on the rotation direction and the rotation amount of the lens motor, for example.

  When executing the lens control information registration process, the CPU 10_2 may cause the display unit 15_2 to display a message indicating an operation procedure for registering the lens control information via the panel driving unit 13_2. .

  After the lens control information registration in step S36, the search in step S32 is executed.

  In the above-described multi-screen display operation, when the first and second area images (divided images) are formed on the display portions 15_1 and 15_2, the CPU portion 10_1 and the CPU portion 10_2 are connected to the panel of the display portion 15_1. Depending on the resolution and the panel resolution of the display unit 15_2, the size of the divided images formed on the display units 15_1 and 15_2 may be adjusted so that the resolutions of the image forming regions where the images are formed are equal. Good. Thereby, it can respond to the image signal S0 of various resolutions.

  In the image display system of the present embodiment, the number of projectors may be three or more. For example, in the configuration shown in FIG. 3, two or more video projectors 22 can be connected to the main projector by providing two or more video output terminals 22. In this case, the user further inputs information indicating the output terminal / projector correspondence as information necessary for multi-screen display. In the image division processing in step S25 or S26 of FIG. 5, the CPU unit 10 obtains image division information including information on the number of areas, area resolution, area / projector correspondence, and output terminal / projector correspondence. The image is supplied to the image division / distribution unit 11.

  The image division / distribution unit 11 refers to the image division information, generates a divided image signal indicating a divided image obtained by dividing the image based on the image signal S0 in accordance with the number of projectors, and outputs the corresponding divided image signal to each sub-image signal. You may supply to a projector. For example, the image division / distribution unit 11 supplies the image signal S1 indicating the first area projected by the main projector to the resolution conversion unit 12, and indicates each second area projected by each sub projector. The image signal S2 is supplied to the corresponding video output terminal 22.

  According to the image display system of the present embodiment described above, the panel resolution of the projector 1 is different from the panel resolution of the projector 2, but the images of the first and second areas (divided images) obtained by dividing the image of the image signal S0. Have the same resolution. The images in the first and second areas are formed on the display portions 15_1 and 15_2 without resolution conversion. Under the control of the CPU units 10_1 and 10_2, the size and position of the images (divided images) of the first and second areas formed on the display units 15_1 and 15_2 are adjusted, and the resolutions of the respective image forming regions match. . Therefore, the resolution of the image of the first area projected by the projection unit 16_1 matches the resolution of the image of the second area projected by the projection unit 16_2, and the aspect ratios of these projection images also match. Therefore, in the multi-screen display using the images of the first and second areas, the boundary between the image of the first area and the image of the second area is not observed, and the first and second areas are not observed. There is no sense of incongruity in the subject straddling the image. As described above, according to the image display system of the present embodiment, the image quality when the multi-screen display is performed is improved as compared with the image display system shown in FIG.

  Further, according to the image display system of the present embodiment, the following effects can also be obtained.

  The panel resolution of the projector varies. For example, in addition to the above-mentioned XGA and WXGA, SVGA (800 dots × 600 lines), SXGA (1400 dots × 1050 lines), 1080P (1920 dots × 1080 lines), WUXGA (1920) There is a panel resolution such as (dot × 1200 lines). Some users may want to purchase a plurality of projectors with different resolutions in configuring an image display system in consideration of convenience and price when using a projector alone.

  However, in the image display system shown in FIG. 1, there is a restriction that a plurality of projectors having the same panel resolution is used. Therefore, the user cannot freely select projectors having different panel resolutions. This gives a disadvantageous condition to the user in terms of convenience and price.

  In the image display system according to the present embodiment, since projectors having different panel resolutions can be used, the user can freely select projectors having different panel resolutions in consideration of convenience and price.

  Further, as compared with the image display system shown in FIG. 1, the image signal distributor 104 for distributing the image signal to each projector is unnecessary, so that the system can be reduced in size and simplified.

(Other embodiments)
FIG. 7 is a schematic diagram for explaining an image display system according to another embodiment of the present invention.

  Referring to FIG. 7, the image display system includes a main projector 4 having an XGA panel resolution and a sub-projector 5 having a WXGA panel resolution. When viewed from the screen 8 side, the sub projector 5 is disposed on the left side of the main projector 4.

  Both the main projector 4 and the sub projector 5 have a configuration as shown in FIG. In the following description, for each configuration shown in FIG. 3, a configuration in which “_1” is added to the reference sign is the configuration of the main projector 4, and a configuration in which “_2” is added to the reference sign is the configuration of the sub projector 5.

  The video supply device 3 supplies the image signal S0_1 to the video input terminal 21_1 of the main projector 4. Here, an image signal indicating an image having a resolution of 1792 dots × 768 lines is used as the image signal S0_1.

  In the main projector 4, the image division / distribution unit 11 </ b> _ <b> 1 is an XGA image that is projected by the sub-projector 5 and a first area that is an XGA image that is projected by the main projector 4. Divide into second areas. Then, the image dividing / distributing unit 11_1 supplies the image signal S1_1 indicating the image of the first area to the panel driving unit 13_1 via the resolution converting unit 12_1, and the image signal S2_1 indicating the image of the second area. , And supplied to the sub projector 5 through the video output terminal 22_1.

  The panel driving unit 13_1 forms the first area image (XGA) based on the image signal S1_1 on the display unit 15_1, and the projection unit 16_1 uses the first area image (XGA) formed on the display unit 15_1. ) Is projected on the screen 8 as the projected image 6.

  On the other hand, in the sub projector 5, the image signal S2_1 from the main projector 4 is supplied to the video input terminal 21_2 as the image signal S0_2. The image dividing / distributing unit 11_2 supplies the image signal S0_2 as it is to the panel driving unit 13_2 as the image signal S1_2.

  The panel drive unit 13_2 forms the second area image (XGA) based on the image signal S1_2 on the display unit 15_2, and the projection unit 16_2 uses the second area image (XGA) formed on the display unit 15_2. ) Is projected onto the screen 8 as the projected image 7.

  The optical unit control unit 17_2 controls the projection unit 16_2 to project the projection image 7 with the same projection size as the projection image 6 projected by the projection unit 16_1 and adjacent to the projection image 6.

  Below, the control method of the projection part 16_2 by the optical unit control part 17_2 is demonstrated.

  First, both the main projector 4 and the sub projector 5 are set to the normal display mode, and the XGA image signal S0_1 is supplied from the video supply device to the video input terminal 21_1 of the main projector 4.

  In the main projector 4, the image dividing / distributing unit 11_1 distributes the image signal S0_1 into two image signals S1_1 and S2_1. The image signals S1_1 and S2_1 are the same as the image signal S0_1.

  The image signal S1_1 is supplied to the panel driver 13_1 without resolution conversion by the resolution converter 12_1. The panel drive unit 13_1 forms an image (XGA) of the image signal S1_1 on the display unit 15_1. Then, the projection unit 16_1 projects the image (XGA) formed on the display unit 15_1.

  On the other hand, the image signal S1_2 is supplied as an image signal S0_2 to the video input terminal 21_2 of the sub projector 5 via the video output terminal 22_1.

  In the sub projector 5, the image dividing / distributing unit 11_1 supplies the image signal S0_2 as it is to the resolution converting unit 12_2 as the image signal S1_2. The resolution conversion unit 12_2 converts the image (XGA) of the image signal S1_2 into a resolution (WXGA) optimal for image formation on the display unit 15_2, and supplies the converted image to the panel drive unit 13_2.

  The panel drive unit 13_2 causes the display unit 15_2 to form an image (WXGA) of the image signal S1_2 whose resolution has been converted. Then, the projection unit 16_2 projects the image (WXGA) formed on the display unit 15_2.

  The user moves the main projector 4 and the sub projector 5 so that the projection image (XGA) from the main projector 4 and the projection image (WXGA) from the sub projector 5 have the same vertical width and are adjacent to each other. Manipulate. In this operation, the user rotates or moves the respective housings of the main projector 4 and the sub projector 5, and adjusts the projection size and the projection position of each projection image using a lens shift mechanism and a zoom focus mechanism.

  FIG. 8 schematically shows a projection image (XGA) from the main projector 4 and a projection image (WXGA) from the sub projector 5. In this example, an XGA projection image 6 from the main projector 4 and a WXGA projection image 7 from the sub projector 5 are arranged adjacent to each other. The vertical widths of the projection images 6 and 7 are the same. That is, a horizontally long screen is formed by the projected images 6 and 7.

  In the state shown in FIG. 8, the reference value of the moving amount and moving direction of the lens of the lens shift mechanism and the zoom focus mechanism in the projection unit 16_2 of the sub projector 5 is acquired. And the lens control information in case the projection part 16_2 of the sub projector 5 projects the image (XGA) of a 2nd area as the projection image 7 is produced.

  FIG. 9 is a diagram for explaining a procedure for creating lens control information. A partial diagram (a) shown in the upper part of the drawing is a schematic diagram showing a projection image before adjustment, and a lower part (b) ) Is a schematic diagram showing a projection image after adjustment.

  For example, the user causes the operation unit 23_2 of the sub projector 5 to supply the XGA image signal S1_2 output from the image division / distribution unit 11_1 to the panel drive unit 13_2 without resolution conversion by the resolution conversion unit 12_2. The predetermined operation is performed.

  In response to the predetermined operation, the CPU unit 10_2 supplies the XGA image signal S1_2 output from the image dividing / distributing unit 11_1 to the panel driving unit 13_2 without performing resolution conversion by the resolution converting unit 12_2. Then, the panel drive unit 13_2 forms an image (XGA) of the image signal S1_2 on the display unit 15_2. At this time, in order to make the center of the image (XGA) coincide with the center position of the panel, as shown in FIG. 9A, an offset of 128 dots in the horizontal direction and 16 lines in the vertical direction is applied. This offset is performed by the CPU unit 10_2 controlling the image forming operation in the display unit 15_2 via the panel driving unit 13_2.

  In the example shown in FIG. 9A, the projection size of the projection image 7 is smaller by 128 dots in each of the left and right in the horizontal direction and 16 lines in the vertical direction than in the state shown in FIG. Only small. For this reason, the projection size of the projection image 7 is smaller than that of the projection image 6, and the projection image 7 is not adjacent to the projection image 6.

  The user operates the lens shift function and the zoom focus function of the projection unit 16_2 using the operation unit 23_2. Specifically, as shown in FIG. 9B, the lens shift function so that the projection size of the projection image 7 matches the projection size of the projection image 6 and the projection image 7 is adjacent to the right side of the projection image 6. Operate the zoom focus function.

  In the state shown in FIG. 9B, the setting values of the moving direction and the moving amount of the lens shift function and zoom focus function of the projection unit 16_2 are stored as lens control information in the lens control information table of the storage unit 19_2. . At this time, resolution identification information indicating XGA is given to the lens control information.

  When performing multi-screen display, in the sub-projector 5, the CPU unit 10_2 displays the image (XGA) of the second area based on the image signal S1_2 on the display unit 15_2 without resolution conversion, and further in the storage unit 19_2. The lens control information to which the XGA resolution identification information is held (setting values of the movement amount and the movement method) is supplied to the optical unit control unit 17. And the optical unit control part 17 controls the projection part 16_2 based on the lens control information. Thus, as shown in FIG. 9B, the XGA projection image 7 projected from the sub projector 5 is adjacent to the XGA projection image 6 projected by the main projector 4, and the projection image 7 The projection size matches the projection size of the projection image 6.

  FIG. 10 shows an example of a multi-screen of the image display system of this embodiment. According to the image display system of the present embodiment, by performing multi-screen display in the state shown in FIG. 9B, a multi-screen having a resolution of 2048 dots × 768 lines as shown in FIG. 10 is displayed. be able to.

  Next, the operation of the image division / distribution unit 11_1 of the main projector 4 will be specifically described.

  The image dividing / distributing unit 11_1 receives the image signal S0_1 from the video supply device 3. FIG. 11 shows an example of the image signal S0_1 supplied from the video supply device 3.

  In FIG. 11, an image of 1792 dots × 768 lines is schematically shown in the upper part of the drawing, and a data enable signal (DE) and a vertical synchronization signal indicating the image of 1792 dots × 768 lines are shown in the lower part of the drawing. And a horizontal sync signal.

  The image signal S0_1 includes the Data enable signal (DE) and the synchronization signal indicating the vertical synchronization and the horizontal synchronization shown in FIG. In the present embodiment, the sub projector 5 is arranged on the left side of the main projector 4 when viewed from the screen 8 side. Therefore, the image dividing / distributing unit 11_1 divides the image of the image signal S0_1 into the first and second areas in the horizontal direction, and the image signal S1_1 indicating the first area and the image signal S2_1 indicating the second area. Is output.

  FIG. 12 shows an example of the image signal S1_1, and FIG. 13 shows an example of the image signal S2_1.

  In FIG. 12, an image of 896 dots × 768 lines is schematically shown in the upper part of the drawing, and a data enable signal (DE) and a vertical synchronization signal indicating the image of 896 dots × 768 lines are shown in the lower part of the drawing. And a horizontal sync signal. Here, the upper image is an image of the left area when the image of the image signal S0_1 shown in FIG. 11 is divided into two areas on the left and right.

  In FIG. 13, an image of 896 dots × 768 lines is schematically shown in the upper part of the drawing, and a data enable signal (DE) and a vertical synchronization signal indicating the image of 896 dots × 768 lines are shown in the lower part of the drawing. And a horizontal sync signal. Here, the upper image is an image of the right area when the image of the image signal S0_1 shown in FIG. 11 is divided into two areas on the left and right.

  The image division / distribution unit 11_1 receives the image signal S0_1 including the Data enable signal (DE) and the vertical synchronization and horizontal synchronization synchronization signals illustrated in FIG. 11 from the video supply device 3, and illustrated in FIG. An image signal S1_1 including a Data enable signal (DE) and vertical and horizontal synchronization signals, and an image signal S2_1 including a Data enable signal (DE) and vertical and horizontal synchronization signals shown in FIG. Is output.

  In the present embodiment, the main projector 4 and the sub-projector 5 are arranged side by side, and the maximum screen resolution when performing multi-screen display is 2048 dots × 768 lines.

  In the main projector 4, when the center of the image (896 dots × 768 lines) of the image signal S1_1 shown in FIG. 12 is aligned with the panel center of the display unit 15_1, the width of the projected image in the horizontal direction (left-right direction) is maximized. It is narrower by 64 dots on both the left and right sides.

  Similarly, in the sub projector 5, when the center of the image (896 dots × 768 lines) of the image signal S2_1 shown in FIG. 13 is aligned with the panel center of the display unit 15_2, the width of the projected image in the horizontal direction (left-right direction) is It is narrower by 64 dots on the left and right sides than the maximum display.

  For this reason, when the image of the image signal S1_1 shown in FIG. 12 is projected as it is by the main projector 4, and the image based on the image signal S2_1 shown in FIG. A gap having a width of 128 dots (= 64 dots × 2) is generated. In order to eliminate this gap, the screen position is adjusted in each of the main projector 4 and the sub projector 5.

  For example, in the main projector 4, the CPU unit 10_1 adjusts the screen position by controlling the image forming operation in the display unit 15_1 via the panel driving unit 13_1. In the sub projector 5, the CPU unit 10_2 controls the panel driving unit 13_2. The screen position is adjusted by controlling the image forming operation in the display unit 15_2 through the control unit. Specifically, the following screen position adjustment is performed.

  In the main projector 4, the screen position is adjusted at the falling edge of the Data enable signal (DE). For example, the CPU unit 10_1 sets the falling edge of the Data enable signal (DE) at the 1024th dot for the image signal S1_1.

  On the other hand, the sub projector 5 adjusts the screen position at the rising edge of the Data enable signal (DE). For example, the CPU unit 10_2 sets the rising edge of the Data enable signal (DE) at the first dot for the image signal S2_1.

  By adjusting the screen position, a 1792 dot × 768 line screen as shown in FIG. 14 can be obtained. In this screen, the projection image from the main projector 4 and the projection image from the sub-projector 5 are connected without a gap, and the horizontal width is larger than that of the above-mentioned maximum display screen (2048 dots × 768 lines). It is narrower by 128 dots on the left and right.

  In the present embodiment, the resolution of the image signal S0 supplied from the video supply device 3 is not limited to the resolution of 1792 dots × 768 lines shown in FIG.

  The resolution of the image signal S0 may be, for example, a resolution of 1366 dots × 768 lines, 1440 dots × 900 lines, 1600 dots × 900 lines, 2048 dots × 1536 lines, 2880 dots × 1600 lines, and the like.

  When the resolution of the image signal S0 is 1366 dots × 768 lines, the width of 1366 dots may be divided into two by 683 dots in the horizontal direction.

  When the resolution of the image signal S0 is 1440 dots × 900 lines, the width of 1440 dots is divided into two by 720 dots in the horizontal direction, and 900 lines may be converted into 768 lines in the vertical direction.

  When the resolution of the image signal S0 is 1600 dots × 900 lines, the width of 1600 dots in the horizontal direction is divided into two by 800 dots, and the 900 lines may be converted into 768 lines in the vertical direction.

  When the resolution of the image signal S0 is 2048 dots × 1536 lines, the width of the 2048 dots is divided into 1024 dots in the horizontal direction, and 1536 lines may be converted to 768 lines in the vertical direction.

  The above-described embodiment described above is an example of the present invention, and changes that can be understood by those skilled in the art can be applied to the configuration and operation without departing from the spirit of the invention.

  For example, the image display system can be configured to perform n × m multi-screen display. In this case, n × m projectors are used, one of which is a main projector and the other is a sub projector. The correspondence between each screen and each projector is set in advance.

  When two or more sub projectors are used, the panel resolutions of the sub projectors may be different from each other, and the panel resolutions of some of the sub projectors may be the same as the panel resolution of the main projector.

  In the sub projector, the image dividing / distributing unit may be replaced with a receiving unit in the configuration illustrated in FIG. 3. In this case, the receiving unit supplies the image signal S0 to the resolution conversion unit 12 as the image signal S1.

Moreover, although this invention can take a form like the following additional remarks 1-8, it is not limited to these forms.
[Appendix 1]
A first projector that receives an image signal and at least one second projector that communicates with the first projector, and a partial image of an image based on the image signal is represented by the first and second projectors. An image display system in which the entire image is displayed by projection by a projector,
The first projector is
A divided image signal indicating a divided image obtained by dividing an image based on the image signal is generated according to the number of the first projector and the second projector, and the corresponding divided image signal is supplied to the second projector. An image segmentation / distribution unit;
A first image forming unit that includes a first panel unit having a first panel resolution and that forms a divided image based on the divided image signal generated by the image dividing / distributing unit on the first panel unit. When,
A first projection unit that projects an image formed by the first panel unit;
A first control unit that controls an image forming operation in the first image forming unit,
The second projector is
A second image forming unit that includes a second panel unit having a second panel resolution, and forms a divided image based on the divided image signal supplied from the image dividing / distributing unit on the second panel unit; ,
A part of the lens is movable, and the projection position and the projection size of the image are changed according to the movement direction and the movement amount of the lens, and the image formed by the second panel unit is projected. A second projection unit that
A second control unit that controls an image forming operation in the second image forming unit and a projection operation in the second projection unit;
Each of the first and second control units adjusts the size of the divided image formed on each panel unit according to the first and second panel resolutions of the first and second panel units. The resolution of the image forming area where the image is formed is equal, and the second control unit is configured to equalize the size of the projection image by moving the lens of the second projection unit. Image display system.
[Appendix 2]
The first control unit acquires information indicating the second panel resolution from the second projector, and when the panel resolution indicated by the information is higher than the first panel resolution, the image division is performed. The image display system according to appendix 1, wherein the resolution of the divided image signal generated by the distribution unit is set to a resolution that matches the first panel resolution.
[Appendix 3]
The first control unit acquires information indicating the second panel resolution from the second projector, and when the panel resolution indicated by the information is lower than the first panel resolution, the image division is performed. The image display system according to appendix 1 or 2, wherein the resolution of the divided image signal generated by the distribution unit is set to a resolution that matches the second panel resolution.
[Appendix 4]
The image display system according to any one of appendices 1 to 3, wherein the image dividing / distributing unit outputs the divided image signal only when the resolution of the image signal is higher than the first panel resolution.
[Appendix 5]
The second projector further includes a table storing lens control information for moving the lens for each of a plurality of different resolutions,
The second control unit acquires lens control information corresponding to the resolution of the divided image signal supplied from the image division / distribution unit from the table, and the second projection unit according to the lens control information The image display system according to any one of appendices 1 to 4, wherein the lens is moved.
[Appendix 6]
A projector that projects a partial image of an image based on an image signal received from an external device and displays the entire image by the projected partial image and a partial image of the image projected by another projector,
An image division / distribution unit that generates a divided image signal indicating a divided image obtained by dividing an image based on the image signal according to the number of the projectors and other projectors, and supplies the corresponding divided image signal to the other projector When,
An image forming unit that includes a panel unit, and forms a divided image based on the divided image signal generated by the image dividing / distributing unit in the panel unit;
A projection unit that projects an image formed by the panel unit;
A control unit for controlling an image forming operation in the image forming unit,
The control unit adjusts the size of the divided image formed on the panel unit according to the panel resolution of the panel unit and the panel resolution of the other projector, and the panel unit of the panel unit and the other projector. A projector in which the resolution of the image forming area where each image is formed is equal.
[Appendix 7]
It communicates with other projectors that receive the image signal, projects a partial image of the image based on the image signal, and the projected image and the partial image of the image projected by the other projector Is a projector that displays
A receiving unit that receives a corresponding divided image signal among divided image signals indicating divided images obtained by dividing the image based on the image signal according to the number of the projectors and the other projectors from the other projector;
An image forming unit that includes a panel unit, and forms a divided image by the divided image signal received by the receiving unit at the panel unit;
A projection unit configured to project an image formed by the panel unit, wherein a part of the lens is movable, and a projection position and a projection size of the image are changed according to a movement direction and a movement amount of the lens. When,
A control unit that controls an image forming operation in the image forming unit and a projection operation in the projection unit;
The control unit adjusts the size of the divided image formed on the panel unit according to the panel resolution of the panel unit and the panel resolution of the other projector, and the panel unit of the panel unit and the other projector. A projector in which the resolutions of the image forming areas in which the respective images are formed are equal, and the size of the projected image is equalized by moving the lens of the second projection unit.
[Appendix 8]
A first projector that receives an image signal and at least one second projector that communicates with the first projector, and a partial image of an image based on the image signal is represented by the first and second projectors. A multi-screen display method performed in an image display system in which the entire image is displayed by projection by a projector,
The first projector includes an image dividing / distributing unit, a first image forming unit including a first panel unit having a first panel resolution, a first projection unit, and a first control unit. The second projector includes a second image forming unit having a second panel unit having a second panel resolution, a part of the lens is movable, and the second projector can move according to a moving direction and a moving amount of the lens. A second projection unit and a second control unit configured to change a projection position and a projection size of the image;
The image division / distribution unit generates a divided image signal indicating a divided image obtained by dividing an image based on the image signal in accordance with the number of the first projector and the second projector, and outputs the corresponding divided image signal. Supplying the second projector;
The first image forming unit forms a divided image based on the corresponding divided image signal generated by the image dividing / distributing unit on the first panel unit,
The first projection unit projects an image formed by the first panel unit;
The second image forming unit forms a divided image based on the corresponding divided image signal generated by the image dividing / distributing unit on the second panel unit,
The second projection unit projects an image formed by the second panel unit;
Each of the first and second control units adjusts the size of the divided image formed on each panel unit according to the first and second panel resolutions of the first and second panel units. And the resolution of the image forming area where the image is formed is equal,
The multi-screen display method, wherein the second control unit moves the lens of the second projection unit to equalize the size of the projection image.

  In the above-described image display systems 1 to 5, the first and second projectors correspond to the projectors 1 and 2 shown in FIG.

  The first image forming unit corresponds to an image forming unit including the resolution conversion unit 12_1, the panel drive 13_1, and the display unit 15_1 of the projector 1, and the second image forming unit is a resolution of the projector 2 described above. This corresponds to an image forming unit including a conversion unit 12_2, a panel drive 13_2, and a display unit 15_2.

  The first control unit corresponds to the CPU unit 10_1 of the projector 1 described above, and the second control unit corresponds to the CPU unit 10_2 of the projector 2 described above.

  Further, the projector of appendix 6 corresponds to the projector 1, and the projector of appendix 7 corresponds to the projector 2.

DESCRIPTION OF SYMBOLS 1, 2 Projector 10 CPU part 11 Image division | distribution part 12 Resolution conversion part 13 Panel drive part 14 Optical unit 15 Display part 16 Projection part 17 Optical unit control part 17a Lens shift control part 17b Zoom focus control part 18 Communication part 19 Memory | storage 20 System bus 21 Video input terminal 22 Video output terminal 23 Operation unit

Claims (8)

A first projector that receives an image signal and at least one second projector that communicates with the first projector, and a partial image of an image based on the image signal is represented by the first and second projectors. An image display system in which the entire image is displayed by projection by a projector,
The first projector is
A divided image signal indicating a divided image obtained by dividing an image based on the image signal is generated according to the number of the first projector and the second projector, and the corresponding divided image signal is supplied to the second projector. An image segmentation / distribution unit;
A first image forming unit that includes a first panel unit having a first panel resolution and that forms a divided image based on the divided image signal generated by the image dividing / distributing unit on the first panel unit. When,
A first projection unit that projects an image formed by the first panel unit;
A first control unit that controls an image forming operation in the first image forming unit,
The second projector is
A second image forming unit that includes a second panel unit having a second panel resolution, and forms a divided image based on the divided image signal supplied from the image dividing / distributing unit on the second panel unit; ,
A part of the lens is movable, and the projection position and the projection size of the image are changed according to the movement direction and the movement amount of the lens, and the image formed by the second panel unit is projected. A second projection unit that
A second control unit that controls an image forming operation in the second image forming unit and a projection operation in the second projection unit;
Each of the first and second control units adjusts the size of the divided image formed on each panel unit according to the first and second panel resolutions of the first and second panel units. The resolution of the image forming area where the image is formed is equal, and the second control unit is configured to equalize the size of the projection image by moving the lens of the second projection unit. Image display system.   The first control unit acquires information indicating the second panel resolution from the second projector, and when the panel resolution indicated by the information is higher than the first panel resolution, the image division is performed. The image display system according to claim 1, wherein a resolution of the divided image signal generated by the distribution unit is set to a resolution compatible with the first panel resolution.   The first control unit acquires information indicating the second panel resolution from the second projector, and when the panel resolution indicated by the information is lower than the first panel resolution, the image division is performed. The image display system according to claim 1 or 2, wherein a resolution of the divided image signal generated by the distribution unit is set to a resolution that matches the second panel resolution.   4. The image display system according to claim 1, wherein the image dividing / distributing unit outputs the divided image signal only when the resolution of the image signal is larger than the first panel resolution. 5. . The second projector further includes a table storing lens control information for moving the lens for each of a plurality of different resolutions,
The second control unit acquires lens control information corresponding to the resolution of the divided image signal supplied from the image division / distribution unit from the table, and the second projection unit according to the lens control information The image display system according to claim 1, wherein the lens is moved. A projector that projects a partial image of an image based on an image signal received from an external device and displays the entire image by the projected partial image and a partial image of the image projected by another projector,
An image division / distribution unit that generates a divided image signal indicating a divided image obtained by dividing an image based on the image signal according to the number of the projectors and other projectors, and supplies the corresponding divided image signal to the other projector When,
An image forming unit that includes a panel unit, and forms a divided image based on the divided image signal generated by the image dividing / distributing unit in the panel unit;
A projection unit that projects an image formed by the panel unit;
A control unit for controlling an image forming operation in the image forming unit,
The control unit adjusts the size of the divided image formed on the panel unit according to the panel resolution of the panel unit and the panel resolution of the other projector, and the panel unit of the panel unit and the other projector. A projector in which the resolution of the image forming area where each image is formed is equal. It communicates with other projectors that receive the image signal, projects a partial image of the image based on the image signal, and the projected image and the partial image of the image projected by the other projector Is a projector that displays
A receiving unit that receives a corresponding divided image signal among divided image signals indicating divided images obtained by dividing the image based on the image signal according to the number of the projectors and the other projectors from the other projector;
An image forming unit that includes a panel unit, and forms a divided image by the divided image signal received by the receiving unit at the panel unit;
A projection unit configured to project an image formed by the panel unit, wherein a part of the lens is movable, and a projection position and a projection size of the image are changed according to a movement direction and a movement amount of the lens. When,
A control unit that controls an image forming operation in the image forming unit and a projection operation in the projection unit;
The control unit adjusts the size of the divided image formed on the panel unit according to the panel resolution of the panel unit and the panel resolution of the other projector, and the panel unit of the panel unit and the other projector. A projector in which the resolutions of the image forming areas in which the respective images are formed are equal, and the size of the projected image is equalized by moving the lens of the second projection unit. A first projector that receives an image signal and at least one second projector that communicates with the first projector, and a partial image of an image based on the image signal is represented by the first and second projectors. A multi-screen display method performed in an image display system in which the entire image is displayed by projection by a projector,
The first projector includes an image dividing / distributing unit, a first image forming unit including a first panel unit having a first panel resolution, a first projection unit, and a first control unit. The second projector includes a second image forming unit having a second panel unit having a second panel resolution, a part of the lens is movable, and the second projector can move according to a moving direction and a moving amount of the lens. A second projection unit and a second control unit configured to change a projection position and a projection size of the image;
The image division / distribution unit generates a divided image signal indicating a divided image obtained by dividing an image based on the image signal in accordance with the number of the first projector and the second projector, and outputs the corresponding divided image signal. Supplying the second projector;
The first image forming unit forms a divided image based on the corresponding divided image signal generated by the image dividing / distributing unit on the first panel unit,
The first projection unit projects an image formed by the first panel unit;
The second image forming unit forms a divided image based on the corresponding divided image signal generated by the image dividing / distributing unit on the second panel unit,
The second projection unit projects an image formed by the second panel unit;
Each of the first and second control units adjusts the size of the divided image formed on each panel unit according to the first and second panel resolutions of the first and second panel units. And the resolution of the image forming area where the image is formed is equal,
The multi-screen display method, wherein the second control unit moves the lens of the second projection unit to equalize the size of the projection image.

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