JP2012022325A - Image display system, image supply device, image display device, control method, and control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display system with enhanced convenience.SOLUTION: An image display system comprises an image supply device 20 and N (N representing an integer equal to or larger than 1) pieces of image display devices 30 that display an image supplied from the image supply device. Each of the image display devices 30 comprises a first display that displays a first identification image for use in identifying the image display device. The image supply device comprises: a second display 40; a device determination/selection part that displays, on the second display, N pieces of second identification images corresponding to the first identification image for use in identifying the N pieces of the image display devices and determines or selects destination image display devices using the N pieces of the second identification images; and an image supply part that supplies images to the determined or selected destination image display devices.

Description

  The present invention relates to image display control in an image supply device and an image display device.

  When giving a presentation, there is a case where it is desired to display only a screen of a specific window on the external monitor instead of the full screen displayed on the display device. On the other hand, a technique for outputting only an image of a window selected by a mouse pointer from a plurality of windows displayed on a display device to an external monitor is known (Patent Document 1).

JP 2000-339130 A

  However, conventionally, when one or more image display devices can be simultaneously connected to the image supply device, determination or selection of an image display device that displays an image, or correspondence between an image and an image display device There was a problem that was difficult.

  SUMMARY OF THE INVENTION An object of the present invention is to solve at least one of the above-described problems and improve the convenience of operation in determining or selecting an image display device.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1]
An image display system comprising: an image supply device; and N (N is an integer greater than or equal to 1) image display devices that display images supplied from the image supply device. A first display unit configured to display a first identification image used to identify the display device, wherein the image supply device corresponds to the second display unit, the first identification image, and the N N second identification images used for identifying the image display devices are displayed on the second display unit, and a destination image display device using the N second identification images An image display system comprising: a device determination / selection unit that executes determination or selection of an image; and an image supply unit that supplies an image to the image display device that is determined or selected.
According to this application example, since the identification image is used when the supply destination image display device is determined or selected, the determination or selection of the image display device can be facilitated, and the convenience of operation of the image display system can be improved. Become.

[Application Example 2]
In the image display system according to Application Example 1, the apparatus determination / selection unit supplies M images (M is an integer of 1 or more) to be supplied in addition to the N second identification images. By displaying the candidate image on the second display unit and associating the supply candidate image with the second identification image, it is possible to determine or select an image to be supplied to the supply destination image display device. An image display system that performs.
According to this application example, the image display device can be easily associated with the supplied image, and the convenience of operation in determining or selecting the image display device can be improved.

[Application Example 3]
The image display system according to Application Example 1 or Application Example 2, wherein the first identification image and the second identification image are the same.
According to this application example, it is not necessary to associate the first identification image with the second identification image.

[Application Example 4]
In the image display system according to any one of Application Examples 1 to 3, each image display device further includes a first storage unit that stores the first identification image, and the image supply device includes the first display unit. An image display system that acquires the identification image of each from each image display device and displays it as the second identification image.
According to this application example, the image supply device does not need to store the identification image in advance.

[Application Example 5]
In the image display system according to Application Example 4, the image supply device performs identification so that the first identification image does not overlap with the image display device when a plurality of acquired first identification images overlap. An image display system including a management unit that issues an image change instruction.
According to this application example, the first identification images do not overlap.

[Application Example 6]
In the image display system according to any one of Application Examples 1 to 3, the image supply device further includes a storage unit that stores the N second identification images, and each image display device includes the second display image. An identification display image is acquired from the image supply device and displayed as the first identification image.
According to this application example, since the image supply device supplies the identification image, the identification image does not overlap.

[Application Example 7]
In the image display system according to any one of Application Examples 1 to 6, the device determination / selection unit displays an image of a next supply destination when a plurality of image display devices are determined or selected as the supply destination. An image display system that collectively presents the plurality of image display devices as candidates for the determination or selection when the device is determined or selected.
According to this application example, once the image display device is determined / selected, it is possible to save the trouble of determining / selecting the supply destination image display device for the second and subsequent times.

[Application Example 8]
An image supply device that supplies an image to N (N is an integer of 1 or more) image display devices, and includes a display unit and N identification images used to identify the N image display devices. An apparatus determination / selection unit for determining or selecting the supply destination image display apparatus using the N identification images and displaying the determined / selected supply destination image on the display unit; An image supply apparatus comprising: an image supply unit that supplies an image to the apparatus.
According to this application example, since the identification image is used when determining or selecting the supply destination image display device or when determining or selecting the supply destination image display device, the determination or selection of the image display device is facilitated. Convenience in operation of the image display apparatus can be improved.

[Application Example 9]
An image display device comprising: a storage unit that stores an identification image; and a display unit that acquires the identification image from the storage unit and displays the identification image.
According to this application example, since the identification image is held by the image display device, the identification image can be easily displayed, and the identification property of the image display device can be improved.

[Application Example 10]
The image display device according to Application Example 9, wherein the storage unit stores a plurality of identification images, and includes a selection unit that selects an arbitrary identification image from the storage unit.
According to this application example, when a plurality of total image display devices are used, there is a possibility that the identification images may overlap. However, since the image display device has a plurality of identification images, It is possible to eliminate duplication of identification images and improve the identification of the image display device.

[Application Example 11]
The image display device according to Application Example 9 or Application Example 10, including an acquisition unit that acquires the identification image from outside.
According to this application example, since the image display apparatus can acquire the identification image from the outside, it is possible to further improve the identification of the image display apparatus.

  The present invention can be realized in various forms, and stores, for example, an image display control method, an image display control program, and an image display control program in addition to an image display system, an image supply device, and an image display device. It can be realized in various forms such as a storage medium.

It is explanatory drawing which shows schematic structure of the image supply system containing the image supply apparatus which concerns on a 1st Example. FIG. 3 is a functional block diagram schematically illustrating an internal configuration of the image supply apparatus according to the first embodiment. It is explanatory drawing which shows an example of a structure of the identification image management file F1. It is a functional block diagram which shows typically the internal structure of the image display apparatus used in a 1st Example. It is explanatory drawing which shows an example of a structure of the identification image management file F34. It is a flowchart which shows operation | movement of an image display apparatus. It is a flowchart which shows operation | movement of an image supply apparatus. It is a flowchart which shows operation | movement of an image supply apparatus. It is explanatory drawing which shows the screen displayed on the display for display 40 during acquiring projector information I33. 5 is an explanatory diagram showing a selection screen of the image display device 30. FIG. It is explanatory drawing which shows the whole image supply system at the time of image display apparatus selection. It is explanatory drawing which shows the state by which the image display apparatus was selected. It is explanatory drawing which shows an example of the correspondence of window storage area A1-A3 which stores the image data for a display, the storage area for projector supply, and SPJ1-SPJ3. It is explanatory drawing which shows an operation screen. It is explanatory drawing which shows the image display system at the time of selection completion. 5 is an explanatory diagram illustrating an example of an association operation between content and an image display device 30. FIG. 5 is an explanatory diagram illustrating an example of an association operation between content and an image display device 30. FIG. It is explanatory drawing which shows the image display system which is displaying the image on an image display apparatus. It is explanatory drawing which shows the image display system which is each displaying the window on the two image display apparatuses 30 (PJ1, PJ3). 7 is a flowchart of operations of the image display device 30 and the image supply device 20 in the second embodiment. 12 is a flowchart of operations of the image display device 30 and the image supply device 20 in the third embodiment. It is a flowchart which shows operation | movement of the image supply apparatus in a 4th Example. It is explanatory drawing which shows the supply scheduled destination display apparatus or group selection screen.

  Hereinafter, an image supply system according to the present invention will be described based on examples with reference to the drawings.

First embodiment:
FIG. 1 is an explanatory diagram showing a schematic configuration of an image supply system including an image supply apparatus according to the first embodiment. The image supply system 10 includes an image supply device 20 and an image display device 30. The image supply system 10 is also referred to as an image display system 10, and the image supply apparatus 20 is also referred to as an image transfer apparatus. A plurality of image display devices 30 are connected to the image supply device 20. The image supply device 20 and the image display device 30 are connected via, for example, a wireless local area network (LAN).

・ Configuration of image supply device:
FIG. 2 is a functional block diagram schematically illustrating the internal configuration of the image supply apparatus according to the first embodiment. The image supply device 20 is a personal computer, for example, and is connected to an input device 41 such as a display 40 for display, a keyboard, and a mouse. The image supply apparatus 20 includes a central processing unit (CPU) 200, a random access memory (RAM) 210, a hard disk drive (HDD) 220, a drawing memory (VRAM) 230, and an input / output interface 240. The CPU 200, RAM 210, HDD 220, VRAM 230, and input / output interface 240 are connected via a common bus 250 so that bidirectional communication is possible.

  The CPU 200 is a logic circuit that executes various arithmetic processes. For example, the CPU 200 loads and executes various programs and modules stored in the HDD 220 in the RAM 210. The RAM 210 is a volatile memory, and temporarily stores calculation results of the CPU 200 and display image data to be supplied to the image display device 30. The VRAM 230 is a memory for expanding and temporarily buffering display image data drawn based on the data, and generally allows reading and writing of data at a higher speed than the RAM 210.

  The HDD 220 is a magnetic disk storage device that stores the image supply program P1 and the identification image management program P2. Note that a nonvolatile semiconductor memory may be provided instead of the HDD 220. The image supply program P1 stored in the HDD 220 includes a window selection module M1, a projector designation module M2, a storage control module M3, a display image data generation module M4, an image processing module M5, a communication control module M6, and a projector information acquisition module M7. And a connected projector management module M8 and a display control module M9. The identification image management program P2 includes an identification image management file F1 and an identification image file F2. Each module implements various functions by being executed by the CPU 200.

  The image supply program P1 is a program for supplying an image displayed on the display 40 connected to the image supply apparatus 20 to an external image output device. More specifically, the image supply program P1 in the present embodiment can supply a plurality of contents displayed on the display for display 40 to each image output device in units of contents. Here, the content is a display screen provided in application units, each document creation screen in word processor software, each presentation screen in presentation software, a playback screen for playing streamed video content, and still image editing Includes screens and display screens. The content also includes a so-called desktop screen displayed as the background of the display 40 for display. Note that these contents are also referred to as windows when Windows (registered trademark) is used as an operating system.

  The window selection module M1 is a module that is executed to select a desired window from a plurality of windows displayed on the display 40 for display. Specifically, the window selected from the plurality of windows by the operator via the input device 41 is specified. For example, by assigning a unique number to a window (open window) displayed on the display 40, each window can be identified and the selected window can be specified. Note that there may be one window displayed on the display 40 for display. In this case, the window selection module M1 specifies the window determined by the operator via the input device 41.

  The projector designation module M2 is a module for designating the image display device 30 that outputs the window selected by the window selection module M1.

  The storage control module M3 is a module for associating the selected window with the designated image display device 30 and storing them in the RAM 210 or the HDD 220. The storage control module M3 also depends on the number of windows at least part of which are displayed on the display 40, the number of image display devices 30 connected to the image supply device 20, and the maximum resolution of the display 40. Thus, a window storage area (content storage area) for storing window display image data and a projector supply storage area for storing image data to be sent to the image display device 30 are secured in advance on the RAM 210. It should be noted that at least one of a window storage area corresponding to the number of windows and a projector supply storage area corresponding to the number of image display devices 30 may be secured in the RAM 210 or the HDD 220.

  The display image data generation module M4 is a module for generating display image data for each window displayed on the display 40 for display. The display image data generation module M4 is a window that exists on the display 40 for display, in other words, a window that is hidden behind another window, and a part of the display image data generation module M4 protrudes from the display screen of the display 40 for display. The display image data can be generated for all the windows even for the windows that do not exist. In this process, for example, not only in the window being operated (active window) but also in other windows, display image data is once drawn on the VRAM 230 at the time of selection, and the drawn display image data is stored in the RAM 210. This is realized by storing in a predetermined position. In this case, whenever a window other than the active window is selected, the display of the other window can be updated by executing the drawing process for the other window. Alternatively, when the capacity of the VRAM 230 is large, display image data for a plurality of windows may be stored on the VRAM 230.

  The image processing module M5 is a module for executing various image processing on the display image data supplied to the image display device 30. Image processing executed by the image processing module M5 includes, for example, image processing such as resolution conversion processing, sharpness, luminance adjustment, and color balance. Further, in this embodiment, the image display apparatus 30 transmits the image to the image display device 30 in accordance with various operations on the layout display window displayed in the layout display area on the display 40, for example, movement and deformation (resizing). For changing the image data for display. Specifically, the projection position of the image projected by the image display device 30 is moved in response to the movement operation on the layout display window, and the image projected by the image display device 30 in response to the deformation operation on the layout display window. Deform.

  The communication control module M6 controls transmission of connection information to the image display device 30, connection establishment, and transmission of display image data, or the input / output interface 240 for receiving projector information I33 from the image display device 30. It is a module that controls

  The projector information acquisition module M7 is a module for acquiring projector information I33 (see FIG. 4) from the image display device 30. The projector information I33 includes, for example, the maximum resolution supported by the image display device 30, the color profile (eg, ICC profile) of the image display device 30, identification information for specifying the image display device 30, and other information of the image display device 30. Contains information about image playback characteristics.

  The connected projector management module M8 is a module for managing the number of image display devices 30 connected to the image supply device 20, that is, the attachment / detachment of the image display device 30 with respect to the image supply device 20.

  The display control module M9 is a module for displaying an image using display image data on the display 40 and displaying a layout display area and a layout display window in a predetermined area on the display 40. is there. The display control module M9 also changes the display of the layout display window based on an operation on the layout display window, for example, movement or deformation (resizing). The display control module M9 also changes the size of the window displayed on the display 40 when the operation on the layout display window is transformed (resized). Further, the display control module M9 displays a plurality of layout display areas for the layout display window of the window that protrudes from the display display 40, and includes a plurality of areas including the portion that protrudes from the display display 40 screen. It is displayed over the layout display area.

  The identification image management program P2 manages the association between the image display device 30 and the identification image using the identification image management file F1 and the identification image file F2. FIG. 3 is an explanatory diagram showing an example of the configuration of the identification image management file F1. The identification image management file F1 stores an association between an identification image and an identification color for each image display device 30. The identification image file F2 stores identification image data. In this embodiment, the identification image file F2 stores image data of “sunflower”, “apple”, “broccoli”, and “grape”, but any image can be used as long as it can be distinguished from other images. .

  The input / output interface 240 shown in FIG. 2 exchanges signals between the image supply device 20 and an external device, for example, the image display device 30, for example, wirelessly, and includes transmission / reception including, for example, an antenna and a switch for switching between transmission and reception. A part. By providing the transmission / reception unit, an antenna access point (AP) function or a station (STA) function for transmitting and receiving transmission / reception signals is realized. The input / output interface 240 also receives an input signal from the input device 41 such as a keyboard and a mouse, and outputs display image data to the display 40.

  The device determination / selection unit is realized using, for example, a projector designation module M2, a storage control module M3, a projector information acquisition module M7, a connected projector management module M8, a display control module M9, and an identification image management program P2. When the window and the image display device 30 are associated with each other, the window selection module M1 is also used as the device determination / selection unit. The image supply unit is realized using, for example, a display image data generation module M4, an image processing module M5, and a communication control module M6.

・ Configuration of image display device:
FIG. 4 is a functional block diagram schematically showing the internal configuration of the image display apparatus used in the first embodiment. The image display device 30 is, for example, a projector. As shown in FIG. 4, the image display device 30 includes a central processing unit (CPU) 300, a random access memory (RAM) 310, a nonvolatile memory (ROM) 320, a drawing memory (VRAM) 330, an image display unit 340, An optical system 350, an input / output interface 360, and an operation unit 380 are provided. The CPU 300, RAM 310, EPROM 320, VRAM 330, image display unit 340, input / output interface 360, and operation unit 380 are connected via a common bus 370 so that bidirectional communication is possible.

  The CPU 300 is a logic circuit that executes various arithmetic processes. For example, various programs and modules stored in the EPROM 320 are expanded on the RAM 310 and executed. The RAM 310 is a volatile memory and temporarily stores the calculation result of the CPU 300. The VRAM 330 is a memory for temporarily buffering drawing data drawn based on display image data.

  The EPROM 320 is a semiconductor memory that stores the projector information transmission module M31, the drawing module M32, the projector information I33, the identification image management file F34, and the identification image file F35. Instead of EPROM 320, a magnetic disk storage device may be used.

  The projector information transmission module M31 is a module for transmitting stored projector information to the image supply device 20. For example, when the connection between the image display apparatus 30 and the image supply apparatus 20 is established, the stored projector information I33 is acquired, and the projector information I33 is transmitted to the image supply apparatus 20 via the input / output interface 360. Send.

  The drawing module M <b> 32 analyzes the display image data received from the image supply device 20 via the input / output interface 360 and draws it on the VRAM 330. Specifically, the drawing module M32 analyzes the received display image data, acquires information such as the number of colors, size (vertical and horizontal), coordinates, and image format, and uses the acquired information on the VRAM 330. For example, pixel values are arranged by a bitmap method.

  FIG. 5 is an explanatory diagram showing an example of the configuration of the identification image management file F34. The identification image management file F34 stores a list of identification images and identification colors, and a flag indicating which identification image is used as a default identification image. The identification image file F35 stores identification image data. In this embodiment, the identification image file F35 stores image data of “sunflower”, “apple”, “broccoli”, and “grape”, and the image of “sunflower” is the default image. The default identification image is set to be different for each image display device 30. However, when the default identification image is duplicated, the default identification image is determined by an operation at the operation unit 380 or an instruction from the image supply device 20. It is possible to change the image.

  The image display unit 340 is used to generate an image for projection using the drawing data stored in the VRAM 330. The image display unit 340 may be of any type, for example, an image display unit that modulates light from an RGB light source using a liquid crystal panel, an image display that modulates using a digital micromirror device (DMD) or reflective liquid crystal. Or the like can be used.

  The optical system 350 includes a plurality of lenses, and is used to project an image generated by the image display unit 340 onto a projection surface with a desired size.

  The operation unit 380 is used when the image display device 30 is operated manually or when various settings are set / changed. Here, the various settings include, for example, settings of a network and which identification image is set as a default identification image.

・ Operation of the image display device:
FIG. 6 is a flowchart showing the operation of the image display apparatus. When the image supply program P1 of the image supply device 20 is activated, a request for projector information I33 is sent from the image supply device 20. In step S <b> 120, the CPU 300 transmits projector information I <b> 33 to the image supply device 20. Specifically, in each image display device 30, the CPU 300 executes the projector information transmission module M <b> 31, acquires the projector information I <b> 33 from the ROM 320, and transmits it to the image supply device 20. The projector information I33 includes information indicating which identification image the image display device 30 uses as a default identification image.

  In step S <b> 150, the CPU 300 projects an identification image on the screen 50 using the image display unit 340 and the optical system 350. As a result, the user can know which identification image corresponds to which image display device 30.

  In step S160, when display data is received from the image supply device 20, in step S170, the CPU 300 projects the display data on the screen using the image display unit 340 and the optical system 350. If no display data is sent from the image supply device 20 in step S180, the CPU 300 projects an identification image on the screen using the image display unit 340 and the optical system 350 in step S190.

Operation of the image supply device:
7 and 8 are flowcharts showing the operation of the image supply apparatus. When the image supply program P1 is started in step S210, in step S230, the CPU 200 receives the projector information I33 from the image display device 30, and uses each projector information I33 acquired from each image display device 30 to use each image display device 30. The maximum supported resolution, color profile, identification information, and other image reproduction characteristics are stored in the HDD 220 in association with each image display device 30. As described above, the projector information I33 includes information indicating which identification image the image display device 30 uses. In step S240, the CPU 200 determines whether or not the identification images sent from the different image display devices 30 are duplicated. If the identification images are duplicated, the CPU 200 displays to change the identification image in step S250. Display on the display 40.

  FIG. 9 is an explanatory diagram showing a screen displayed on the display 40 during acquisition of the projector information I33. In the projector information acquisition screen 500, an indicator 502 and a connection button 504 are displayed. When the projector information I33 is received from the image display device 30, the CPU 200 displays a selection screen for the image display device 30 in step S260.

  FIG. 10 is an explanatory diagram showing a selection screen of the image display device 30. The selection screen 510 displays selection fields 512 to 515 showing all the image display devices 30 that have received the projector information I33, a mouse cursor 524, and a connection button 504. The selection fields 512 to 515 are provided with an identification image display field 516, a device name display field 518, an IP address display field 520, and a radio wave intensity display field 522.

  FIG. 11 is an explanatory diagram showing an overall view of the image supply system when the image display device is selected. A selection screen 510 shown in FIG. 10 is displayed on the display 40 for display, and a projected image from each image display device 30 is displayed on the screen 50. Here, four identification images are displayed on the selection screen 510 corresponding to the four image display devices 30, whereas the screen 50 corresponds to the image display devices 30 of PJ1 to PJ3. Three identification images are displayed. This is because the selection screen 510 identifies all the image display devices 30 (PJ1 to PJ4) detected (received the projector information I33) including the image display devices 30 (PJ4) arranged in different conference rooms. This is because an image is displayed. The identification image displayed in the identification image display field 516 is the same image as the image projected from the corresponding image display device 30. Therefore, according to the present embodiment, since the user can select the image display device 30 using the identification image displayed in the identification image display field 516, the determination or selection of the image display device 30 is easy, and image supply is possible. The convenience of operation of the system 10 can be improved. In step S <b> 270, the CPU 200 detects selection of the image display device 30.

  FIG. 12 is an explanatory diagram showing a state in which the image display device is selected. In this figure, among the selection columns 512 to 515, the selection columns 512 to 514 are highlighted, and three image display devices 30 corresponding to these selection columns 512 to 514 are selected. The CPU 200 can detect the selection of the image display device 30 by detecting a click with the mouse cursor 524 on the selection fields 512 to 514. When the connection button 504 is clicked with the mouse cursor 524, the connection with the selected image display device 30 is completed.

  The CPU 200 executes the connected projector management module M8, specifies the number of image display devices 30 connected to the input / output interface 240, executes the storage control module M3, and executes the storage control module M3. A storage area for supplying projectors according to the number is secured on the RAM 210 or the HDD 220 (step S280). The CPU 200 executes the storage control module M3 to secure a window storage area corresponding to the number of windows on the RAM 210 (step S290).

  FIG. 13 is an explanatory diagram showing an example of the correspondence between the window storage areas A1 to A3 for storing display image data and the projector supply storage areas SPJ1 to SPJ3. In the example of FIG. 13, projector supply storage areas SPJ1 to SPJ3 are secured (assigned) to the image display device 30 (PJ1 to PJ3), respectively. The number of the image display devices 30 is specified by, for example, the CPU 200 detecting the number of wireless ports to which the image display device 30 is connected based on detection of connection establishment in wireless communication. Note that the storage areas for projector supply SPJ1 to SPJ3 and the window storage areas A1 to A3 for storing display image data do not necessarily have to be continuous. The projector supply storage areas SPJ1 to SPJ3 have a capacity corresponding to the resolution of the primary display (desktop screen) of the display 40 for display.

  For example, in Windows (registered trademark), each window is managed by a number called a handle, and is displayed (opened) on the display 40 by the CPU 200 executing the API function “EnumWindows”. ) You can get the handles of all windows. Therefore, the CPU 200 secures a plurality of window storage areas necessary for storing all the windows in the RAM 210 in accordance with the acquired number of handles. In addition, the capacity | capacitance according to the resolution of the desktop screen (primary display) of the display 40 is ensured as the capacity | capacitance of each window storage area.

  In step S300 of FIG. 8, the CPU 200 displays an operation screen 530. FIG. 14 is an explanatory diagram showing an operation screen. FIG. 15 is an explanatory diagram showing the image display system when selection is completed. As shown in FIG. 14, a small screen 532-536 and a desktop window 540 are displayed on the operation screen 530. The number of small screens 532 to 536 corresponds to the number of selected image display devices 30. The image displayed on the small screens 532 to 536 is the same image as the identification image projected by the image display device 30 as shown in FIG. 15. For example, the corresponding image from the identification image file F 2 is displayed on the small screen of the VRAM 230. Displayed by writing to addresses corresponding to 532-536. The desktop window 540 reduces and displays the entire desktop screen before starting the screen supply program P1.

  The CPU 200 executes the display image data generation module M4 to generate (capture) display image data for all windows displayed on the display 40. In the example of FIG. 14, two windows 545 and 550 are displayed in the desktop window 540. These two windows 545 and 550 can be said to be contents provided by the application. When a part of the window protrudes from the desktop window 540, the protruding part is not displayed on the desktop window 540, but display image data for the entire window including the protruding part is generated. Further, the protruding portion includes both a case where the position of the window is offset and a case where the entire window does not fit in the desktop window 540. In the former case, the generated display image data can be stored in one window storage area. In the latter case, the generated display image data is stored across a plurality of window storage areas. Is done.

  For example, when the operating system is Windows (registered trademark), display image data corresponding to all windows displayed on the display 40 is generated by forming a layered window. The CPU 200 uses the handle of each window acquired previously, and the layered setting API “WS_EX_LAYERED” is used for the current window style acquired by “GetWindowLong” and “GetWindowLong” which are API functions for acquiring the setting value of the current window. Each of the windows is formed into a layered window by sequentially executing an API function “SetWindowLong” for registering “OR” and an API function “SetLayeredWindowAttributes” for setting the layered parameter of the designated window. In each layered window, the entire window is captured, that is, display image data corresponding to the entire window is generated.

  The display image data generation module M4 generates display image data by expanding (drawing) display image data based on application data corresponding to each window. Each of the generated display image data is sequentially stored in the window storage area previously secured on the RAM 210. In the example of FIG. 13, display image data for the desktop window 540 is stored in the first window storage area A1, and display image data for the windows 550 and 545 are stored in the second and third window storage areas A2 and A3, respectively. ing. In this embodiment, the storage control module M3 manages the window storage areas A1 to A3 using the coordinates (X, Y). For example, a window (display image data for display) on the display screen of the display 40 for display. ) Is managed with reference to the upper left coordinates. In addition, the projection position of the image with respect to the projection frame when projected corresponds to the storage position of the display image data stored in each window storage area, and by specifying the coordinates in each window storage area, The position of the projected image can be specified. Each pixel data constituting the display image data can also be specified using coordinates applied to the window storage area.

  In step S310, the CPU 200 detects selection of content, and in step S320, the CPU 200 executes the projector designation module M2 and detects selection of the image display device 30 that is the content supply destination.

  16 and 17 are explanatory diagrams showing an example of the association operation between the content and the image display device 30. FIG. When the mouse cursor 524 is clicked on the title bar 547 of the window 545, the window 545 is selected, and as shown in FIG. 16, arrows 570 for the small screens 532-536 corresponding to the displayable image display device 30 are displayed. Is displayed. As shown in FIG. 17, when the mouse cursor 524 is dragged and dropped onto the previous small screen indicated by the arrow 570, for example, the small screen 532, the CPU 200 executes the storage control module M <b> 3 to execute the window 545 and the small screen 532. Is associated with the image display device 30 corresponding to. Specifically, the CPU 200 executes the storage control module M3, stores a window storage area for storing display image data corresponding to the selected window, a projector supply storage area corresponding to the designated image display device, Is associated.

  In step S330, the CPU 200 sends the contents of the selected window 545 to the selected image display device 30. Specifically, the CPU 200 executes the storage control module M3 to supply projector image data, which is a storage area for supplying the display image data of the window 545 stored in the window storage area to the image display device 30 (PJ1). Copy or move to a storage area. The association between each image display device 30 (PJ1 to PJ3) and each storage area is, for example, the port number to which each image display device 30 (PJ1 to PJ3) is connected, or each image display device 30 (PJ1). To PJ3) can be realized by associating the MAC address of the communication control module with coordinate information defining each storage area.

  When the association between the selected window and the designated image display device is completed, the CPU 200 executes the image processing module M5 and performs image processing on display image data as necessary. In the present embodiment, image processing for display image data is executed on each projector supply storage area, SPJ1 to SPJ3. In the image processing, for example, resolution conversion processing, image quality adjustment processing such as sharpness, luminance adjustment, and color balance, and display image data composition processing using the projector information I33 are executed. When it is requested to project a plurality of windows onto one image display device 30 by the synthesis process, display image data according to the image displayed on the display 40 is displayed on the image display device 30. Can be supplied.

  The CPU 200 further executes the communication control module M6, and each image display device 30 (PJ1) corresponding to the image data for display stored in each of the projector supply storage areas SPJ1 to SPJ3 subjected to image processing. To PJ3). Note that after the association between the window and the image display device 30 is completed, generation of window display image data on the display 40 for display and transmission of display image data to each of the image display devices 30 (PJ1 to PJ3). Are repeatedly executed at a predetermined timing. Alternatively, when the content is content that does not involve time transition, generation of display image data of the corresponding window and display on each image display device 30 (PJ1 to PJ3) at the timing when the window becomes active. The image data may be transmitted. Thereby, even after the window and the image display device 30 are associated with each other, it is possible to always project an image corresponding to the latest window.

  FIG. 18 is an explanatory diagram showing an image display system displaying an image on the image display device. The contents (FIG. 14) displayed in the window 545 are displayed on the small screen 532 and the projection screen of the image display device 30 (PJ1). Note that identification images are displayed on the projection screens of the small screens 534 and 536 and the image display device 30 (PJ2, PJ3).

  FIG. 19 is an explanatory diagram showing an image display system displaying windows on two image display devices 30 (PJ1, PJ3). The content displayed in the window 545 (FIG. 14) is displayed on the small screen 532 and the projection screen of the image display device 30 (PJ1), and the content displayed in the window 550 is the small screen 536 and the image display device 30. (PJ3) is displayed on the projection screen. As described above, it is also possible to supply images of a plurality of windows to a plurality of image display devices 30.

  As described above, according to the present embodiment, since the image display device 30 can be selected using the identification image, the determination or selection of the image display device 30 is facilitated, and the operation of the image supply system 10 is convenient. It becomes possible to improve the nature. The identification image displayed on the image display device 30 and the identification image displayed on the display 40 of the image supply device 20 are preferably the same image, but may be different as long as they are corresponding images. Good.

  Also, the timing (FIGS. 10 to 12) for determining / selecting the supply destination image display device that supplies the image to be displayed, and the image that actually supplies the image from the selected supply destination image display device It is only necessary to be able to determine / select an image display device using an identification image at least one of timings (FIGS. 14 to 17) for selecting a supply device.

  In the present embodiment, when the identification images corresponding to the image display device 30 overlap, the image supply device 20 changes the identification image corresponding to the image display device 30, so that the identification images do not overlap.

Second embodiment:
In the first embodiment, the identification image is displayed on the image supply device 20 based on the projector information I33 received from the image display device 30. In the second embodiment, the image supply device 20 stores the identification image in advance, the image display device 30 receives the identification image from the image supply device 20, and the image display device 30 and the image supply device 20 are automatically connected. Is different. FIG. 20 is an operation flowchart of the image display apparatus and the image supply apparatus in the second embodiment. First, the operation of the image supply device 20 will be described. When projector information I33 is received in step S230, connection information is transmitted to the image display device 30 in step S235 to establish a connection. In step S <b> 410, the CPU 200 of the image supply device 20 determines an identification image to be sent to each image display device 30. The identification image is different for each image display device 30. In step S <b> 420, the CPU 200 sends an identification image to each image display device 30. Subsequent operations are the same as those in the first embodiment. Next, the operation of the image display device 30 will be described. In step S130, when connection information is received, connection with the image supply apparatus 20 is established. When the identification image is received in step S510, the CPU 300 of the image display device 30 stores the identification image in the RAM 310 in step S520. In step S <b> 150, the CPU 300 displays the identification image on the screen 50. Subsequent operations are the same as those in the first embodiment.

  In this way, the image supply device 20 may be configured to store the identification image in advance. This eliminates the need for the image display device 30 to inquire the image supply device 20 as to whether or not the identification images are duplicated.

Third embodiment:
FIG. 21 is a flowchart of the operations of the image display device 30 and the image supply device 20 in the third embodiment. The third embodiment is different in that the image supply device 30 stores the identification image in advance, and the image supply device 20 receives the identification image from the image display device 30. First, the operation of the image supply device 20 will be described. When receiving the projector information I33 in step S230, the image supply device 20 transmits connection information to the image display device 30 and establishes connection in step S235. In step S710, an identification image is received. In step S720, it is determined whether the identification images are duplicated. If they are duplicated, an identification image change instruction is sent to the image display device 30 in step S730. On the other hand, when the image display device 30 receives the request for the projector information I33, the CPU 300 transmits the projector information I33 in step S120. Next, in step S610, the CPU 300 sends the identification image to the image supply device 20. In step S620, upon receiving an instruction to change the identification image, in step S630, the CPU 300 changes the identification image, and returns to step S610 to send the identification image to the image supply device 20.

  In this way, the image display device 30 may be configured to store the identification image in advance. In this way, it is not necessary to store the same identification image in both the image display device 30 and the image supply device 20. In the second and third embodiments, the image display device 30 to actually project an image is selected from the image display devices 30 displayed in the selection fields 512 to 514, and the connection button 504 is selected. When clicked, the connection with the selected image display device 30 is completed by disconnecting the connection with the image display device 30 (PJ4) not selected in the selection field 515.

Fourth embodiment:
FIG. 22 is a flowchart showing the operation of the image supply apparatus in the fourth embodiment. In the fourth embodiment, in the first to third embodiments, when the image display devices 30 to be supplied are determined, they can be collectively (grouped), and can be handled collectively from the second time. It is comprised as follows. When projector information I33 is received in step S230, CPU 200 causes display display 40 to display a screen for selecting a supply destination display device or group in step S810.

  FIG. 23 is an explanatory diagram showing a selection screen for a scheduled supply destination display device or group. The selection screen 510 includes group selection fields 580 and 582 and a group creation button 584 in addition to the configuration of the selection screen of the first embodiment. The group selection field 580 includes an identification image display area 581 indicating the image display devices 30 included in the group.

  In step S820, CPU 200 detects selection of image display device 30 or selection of a group. This selection is executed by clicking on the selection columns 512 to 515 or the group selection columns 580 and 582, as in the first embodiment. In step S830, CPU 200 determines whether a group has been selected. When the group is selected, the CPU 200 shifts the processing to step S280 and displays the operation screen 530 on the display 40 for display. If the image display device 30 is selected instead of the group, it is determined in step S840 whether a group including the same image display device has been created. If it has been created, the CPU 200 shifts the processing to step S280 to display the operation screen 530 on the display 40 for display. If not created, in step S850, CPU 200 creates a new group. The created group is displayed in the group selection column from the next time. For example, when a group creation button is selected with some of the selection columns 512 to 515 selected, the CPU 300 creates a group including the selected image display device 30. Also good. In addition, when a group creation button is selected in a state where some of the selection columns 512 to 515 and one of the group selection columns 580 and 582 are selected, the CPU 300 selects a group corresponding to the selected group selection column. May be changed to the selected image display device 30.

  As described above, according to the fourth embodiment, once selected image display devices are grouped and handled, and after the second time, a plurality of image display devices can be collectively displayed as candidates for determination or selection. Therefore, it is possible to improve the operational convenience of the image supply system 10.

・ Modification:
In this embodiment, an image including a pattern such as “sunflower” is used as the identification image. It is possible to use simple graphic images and single color images. Also, the identification image can be newly added / modified. In the first embodiment, the identification image is sent to confirm the duplication. However, an identification code that can identify the identification image may be sent.

  In this embodiment, the image supply device 20 and the image display device are connected using a wireless LAN. For example, a connection using a wired LAN, a universal serial bus (USB), a cable CV, or the like is used. Also good.

  The embodiments of the present invention have been described above based on some examples. However, the above-described embodiments of the present invention are for facilitating the understanding of the present invention and limit the present invention. It is not a thing. The present invention can be changed and improved without departing from the spirit and scope of the claims, and it is needless to say that the present invention includes equivalents thereof.

    DESCRIPTION OF SYMBOLS 10 ... Image display system, 20 ... Image supply apparatus, 30 ... Image display apparatus, 40 ... Display for display, 41 ... Input device, 50 ... Screen, 200 ... CPU, 210 ... RAM, 220 ... Hard disk, 230 ... VRAM, 240 ... I / O interface, 250 ... Bus, 300 ... CPU, 310 ... RAM, 320 ... ROM, 330 ... VRAM, 340 ... Image display unit, 350 ... Optical system, 360 ... I / O interface, 370 ... Bus, 380 ... Operation unit , 500 ... Projector information acquisition screen, 502 ... Indicator, 504 ... Connect button, 510 ... Selection screen, 512 to 515 ... Selection field, 516 ... Identification image display field, 518 ... Device name display field, 520 ... IP address display field, 522 ... Radio field intensity display field, 524 ... Mouse cursor, 530 ... Operation screen, 32 to 536 ... small screen, 540 ... desktop window, 545 ... window, 547 ... title bar, 550 ... window, 570 ... arrow, 580, 582 ... group selection field, 581 ... identification image display area, 584 ... group creation button, A1 to A3 ... window storage area, F1 ... identification image management file, F2 ... identification image file, F34 ... identification image management file, F35 ... identification image file, I33 ... projector information, M1 ... window selection module, M2 ... projector designation module M3 ... Storage control module, M4 ... Display image data generation module, M5 ... Image processing module, M6 ... Communication control module, M7 ... Projector information acquisition module, M8 ... Connected projector management module, M9 ... Display control module M31 ... projector information transmitting module, M32 ... drawing module, P1 ... image supply program, P2 ... identification image management program, SPJ1~SPJ3 ... projector supply storage area

Claims (13)

An image display system comprising: an image supply device; and N (N is an integer of 1 or more) image display devices that display images supplied from the image supply device,
Each image display device
A first display unit for displaying a first identification image used for identifying the image display device;
The image supply device includes:
A second display;
N second identification images corresponding to the first identification image and used for identifying the N image display devices are displayed on the second display unit, and the N second identification images are displayed. An apparatus determination / selection unit for determining or selecting an image display apparatus as a supply destination using the identification image;
An image supply unit for supplying an image to the image display device of the supply destination determined or selected;
An image display system comprising: The image display system according to claim 1,
The apparatus determination / selection unit displays M (M is an integer of 1 or more) images to be supplied as supply candidate images on the second display unit in addition to the N second identification images. An image display system that determines or selects an image to be supplied with the image display apparatus as the supply destination by associating the supply candidate image with the second identification image. The image display system according to claim 1 or 2,
The image display system, wherein the first identification image and the second identification image are the same. The image display system according to any one of claims 1 to 3, further comprising:
Each image display device includes a first storage unit that stores the first identification image,
The image supply device is an image display system in which the first identification image is acquired from each image display device and displayed as the second identification image. The image display system according to claim 4,
The image supply device includes:
An image display system comprising a management unit that instructs the image display device to change an identification image so that the first identification image does not overlap when a plurality of acquired first identification images overlap. The image display system according to any one of claims 1 to 3, further comprising:
The image supply device includes a storage unit that stores the N second identification images,
Each image display device acquires the second identification image from the image supply device, and displays it as the first identification image. The image display system according to any one of claims 1 to 6,
The apparatus determination / selection unit determines the plurality of image display apparatuses when a next supply destination image display apparatus is determined or selected when a plurality of image display apparatuses are determined or selected as supply destinations. Or the image display system which presents collectively as a candidate for selection. An image supply device that supplies images to N (N is an integer of 1 or more) image display devices,
A display unit;
N identification images used for identifying the N image display devices are displayed on the display unit, and the supply destination image display device is determined or selected using the N identification images. A device determination / selection unit for
An image supply unit for supplying an image to the determined / selected supply destination image display device;
An image supply apparatus comprising: A storage unit for storing the identification image;
A display unit for acquiring the identification image from the storage unit and displaying the identification image;
An image display device comprising: The image display device according to claim 9,
The storage unit stores a plurality of the identification images, and includes a selection unit that selects an arbitrary identification image from the storage unit. The image display device according to claim 9 or 10,
An image display device comprising: an acquisition unit that acquires the identification image from outside. A method for controlling supply of images between an image supply device and N (N is an integer of 1 or more) image display devices that display images supplied from the image supply device,
Displaying a second identification image corresponding to the first identification image displayed on the image display device on the image supply device;
In response to determination or selection of the second identification image, determination or selection of an image display device to which an image is supplied from the image supply device is performed.
A control method of supplying an image to the image display device of the supply destination determined or selected. A program for controlling supply of images between an image supply device and N (N is an integer of 1 or more) image display devices that display images supplied from the image supply device,
Displaying a second identification image corresponding to the first identification image displayed on the image display device on the image supply device;
In response to determination or selection of the second identification image, determination or selection of an image display device to which an image is supplied from the image supply device is performed.
A control program for realizing a function of supplying an image to the determined or selected image display apparatus of a supply destination.

Images