WO2012081091A1 - Multi screen display control device, multi screen display control method, and multi screen display control program - Google Patents

Multi screen display control device, multi screen display control method, and multi screen display control program Download PDF

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Publication number
WO2012081091A1
WO2012081091A1 PCT/JP2010/072544 JP2010072544W WO2012081091A1 WO 2012081091 A1 WO2012081091 A1 WO 2012081091A1 JP 2010072544 W JP2010072544 W JP 2010072544W WO 2012081091 A1 WO2012081091 A1 WO 2012081091A1
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WIPO (PCT)
Prior art keywords
display
screen
image
expansion rate
display control
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PCT/JP2010/072544
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French (fr)
Japanese (ja)
Inventor
好功 小泉
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Ｎｅｃディスプレイソリューションズ株式会社
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Priority to PCT/JP2010/072544 priority Critical patent/WO2012081091A1/en
Publication of WO2012081091A1 publication Critical patent/WO2012081091A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
    • H04N21/440272—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA for performing aspect ratio conversion

Definitions

  • the present invention relates to a multi-screen display control device, a multi-screen display control method, and a multi-screen display control program for controlling display on a multi-screen composed of a plurality of screens of a plurality of display devices.
  • an upscaling method in which an image defined with an aspect ratio of 4: 3 is changed to a wide display defined with an aspect ratio of 16: 9.
  • this upscaling method there is a method of displaying by changing the expansion ratio between the center of the screen and the outside of the image.
  • the expansion rate at the center of the screen is set to the same magnification, and the expansion rate is increased as it approaches the outside of the screen (see, for example, Patent Document 1). Accordingly, it is possible to avoid an important subject that is often displayed at the center of the screen from being displayed in an extended manner, and to display an upscaled image by effectively using the wide screen.
  • the method described in Patent Document 1 described above is a method for controlling display on a single display device. Therefore, there is a problem that the above method cannot be applied to a multi-screen display device (multi-display) that displays a single image by arranging a plurality of display screens of a plurality of display devices as one screen. For example, when four rectangular display screens of four display devices constitute one rectangular screen (multi-screen), the center of the multi-screen does not coincide with the center of each display device. For this reason, even if the expansion ratio between the center of the screen and the outside of the screen of each display device is changed, the display cannot be displayed without changing the magnification of the center of one image displayed on the multi-screen. For this reason, when a multi-screen is displayed by the method described in Patent Document 1, the display magnification of the central portion of the entire multi-screen is not equal, and an image that can be displayed on one display device is displayed. I can't.
  • the present invention has been made in consideration of such circumstances and has been made to solve the above-described problem.
  • the object of the present invention is to provide a case where a plurality of display screens by a plurality of display devices constitute one multi-screen.
  • Multi-screen display control device, multi-screen display control method, and multi-screen display control capable of making the display magnification of the central portion of the image constant when displaying an image having an aspect ratio different from the multi-screen aspect ratio on the multi-screen To provide a program.
  • a multi-screen display control device includes an input unit that inputs a video signal indicating a display image to be displayed on a multi-screen configured by a plurality of display screens of a plurality of display devices; Information indicating an expansion rate of each pixel determined in advance according to a position in the multi-screen, wherein a first expansion rate of pixels at an end portion in the multi-screen is defined as 1 or more, and the multi A storage unit that stores expansion rate information that defines a second expansion rate of a pixel at a central portion in the screen as a constant value smaller than the first expansion rate, and the number of display screens with reference to the storage unit.
  • the expansion ratio corresponding to the position of the divided image in the multi-screen is obtained, and the display image is transferred to the display device based on the expansion ratio.
  • a multi-screen display control method includes a step of inputting a video signal indicating a display image to be displayed on a multi-screen configured by a plurality of display screens of a plurality of display devices; Information indicating the expansion rate of each pixel determined in advance according to the position in the multi-screen, wherein the first expansion rate of the pixel at the end portion in the multi-screen is defined as 1 or more, and the multi-screen A step of storing expansion rate information defining a second expansion rate of the central pixel in the inside as a constant value smaller than the first expansion rate, and referring to the storage unit according to the number of display screens For the divided image obtained by dividing the display image, the expansion rate corresponding to the position of the divided image in the multi-screen is obtained, and the display image is displayed on the display device based on the expansion rate. Characterized in that it comprises the steps of: displaying on.
  • a multi-screen display control program is an input for inputting a video signal indicating a display image to be displayed on a multi-screen configured by a plurality of display screens of a plurality of display devices.
  • Storage means for storing expansion rate information that defines a second expansion rate of the central pixel in the multi-screen as a constant value smaller than the first expansion rate, referring to the storage unit, and the display screen
  • the expansion rate corresponding to the position of the divided image in the multi-screen is obtained, and the expansion rate is calculated based on the expansion rate.
  • Characterized in that the shown image is a program for functioning as display control means for displaying on said display device.
  • the display of the center portion of the image is displayed.
  • the magnification can be made constant.
  • FIG. 1 is a diagram illustrating an example of a configuration of a multi-screen display control apparatus 100 according to the present embodiment.
  • the multi-screen display control device 100 performs a display control on a plurality of display devices by combining a plurality of display devices and displaying a multi-screen that forms one screen by the plurality of screens.
  • one screen configured by combining the plurality of screens is referred to as a multi-screen.
  • FIG. 2 is a diagram illustrating an example of a combination of a plurality of screens constituting a multi-screen that is controlled by the multi-screen display control apparatus 100.
  • the multi-screen 200 shown in FIG. 2 is composed of four display screens 211 to 214 by four display devices 201 to 204.
  • two display screens 211 to 214 are arranged in the vertical direction and in the horizontal direction.
  • Each of the display devices 201 to 204 is assigned unique identification information (hereinafter referred to as a display ID).
  • These display devices 201 to 204 are connected in series with each other. In other words, they are connected in a daisy chain manner. These display devices 201 to 204 are sequentially connected such that one output terminal is connected to the other input terminal. Each of the display devices 201 to 204 assigns a display ID indicating the next order of display IDs assigned to itself to the other display display device by connecting its output terminal to the other input terminal.
  • the display device 201 assigns the display ID 1 that is the initial value of the display ID and also to the display device 202. Assign display ID 2.
  • the display device 202 assigns a display ID 3 to the display device 203.
  • the display device 203 assigns a display ID 4 to the display device 204. That is, display IDs 1 to 4 are assigned to the display devices 201 to 204, respectively.
  • position information indicating the position on the multi-screen is determined in advance according to the number of display screens 201 to 204 constituting the multi-screen 200.
  • the display screen 211 is located on the screen (upper left screen) in the ⁇ x direction and the + y direction of the multi-screen 200, and is assigned display ID1.
  • Information indicating the upper left screen is pre-assigned to the display ID 1 as arrangement position information indicating the arrangement position on the multi-screen 200.
  • the display screen 212 is located on the screen in the + x direction and the + y direction (upper right screen) of the multi-screen 200, and is assigned display ID2.
  • Information indicating the upper right screen is pre-assigned to the display ID 2 as the arrangement position information indicating the arrangement position on the multi-screen 200.
  • the display screen 213 is positioned on the screen in the + x direction and the ⁇ y direction (lower right screen) of the multi-screen 200, and the display ID 3 is assigned.
  • Information indicating the lower right screen is pre-assigned to the display ID 3 as the arrangement position information indicating the arrangement position on the multi-screen 200.
  • the display device 204 has its display screen 214 positioned on the screen in the ⁇ x direction and ⁇ y direction (lower left screen) of the multi-screen 200, and is assigned display ID4.
  • Information indicating that the screen is the lower left screen is assigned to the display ID 4 in advance as the position information indicating the position on the multi-screen 200.
  • FIG. 3 is a diagram illustrating an example of a configuration of a plurality of pixels constituting the multi-screen 200 according to the present embodiment.
  • the multi-screen 200 according to the present embodiment is a screen configured by m ⁇ n pixels, in which the length of the x-axis is longer than the length of the y-axis. is there. That is, m> n.
  • the multi-screen 200 includes four display screens 211 to 214 of the display devices 201 to 204. Note that the number of pixels (hereinafter referred to as display pixels) in each of the display screens 211 to 214 is the same, and the aspect ratio in the vertical and horizontal directions is also the same.
  • the display screen 211 is located on the screen in the ⁇ x direction and the + y direction of the multi-screen 200.
  • the coordinates of the display pixels at the four vertices of the display screen 211 are P11 (0, n), P12 (m / 2-1, n), P13 (m / 2-1, n / 2 + 1), P14 (0, n / 2 + 1).
  • the display screen 212 is located on the screen in the + x direction and the + y direction of the multi-screen 200.
  • the coordinates of the display pixels at the four vertices of the display screen 212 are P21 (m / 2 + 1, n), P22 (m, n), P23 (m, n / 2 + 1), P24 (m / 2 + 1, n / 2 + 1). It is.
  • the display screen 213 is positioned on the screen of the multi screen 200 in the + x direction and the ⁇ y direction.
  • the coordinates of the display pixels at the four vertices of the display screen 213 are P31 (m / 2 + 1, n / 2-1), P32 (m, n / 2-1), P33 (m, 0), P34 (m / 2 + 1,0).
  • the display screen 214 is positioned on the screen in the ⁇ x direction and ⁇ y direction of the multi-screen 200.
  • the coordinates of the display pixels at the four vertices of the display screen 214 are P41 (0, n / 2-1), P42 (m / 2-1, n / 2-1), P43 (m / 2-1, 0). ), P44 (0, 0).
  • FIGS. 4A and 4B are diagrams illustrating an example of an image displayed on the multi-screen 200.
  • FIG. FIG. 4A shows a display image 300 that is an example of an image displayed on the multi-screen 200.
  • FIG. 4B shows an image obtained by dividing the display image 300 into four.
  • the display image 300 is an image composed of pixels of P ⁇ Q, in which the length of the x-axis is longer than the length of the y-axis. That is, P> Q.
  • the display image 300 is an image in which a flower image is displayed in the center, and a background image is displayed around the flower.
  • the aspect ratio P: Q of the display image 300 is different from the aspect ratio m: n of the multi-screen 200.
  • the aspect ratio P: Q is 4: 3
  • the aspect ratio m: n is 16: 9.
  • the plurality of pixels constituting the display image 300 are hereinafter referred to as video pixels.
  • the display image 300 is composed of four divided images 301 to 304.
  • FIG. 5 is a diagram illustrating an example of the configuration of video pixels in the display image 300 according to the present embodiment.
  • the divided image 301 is located in the ⁇ x direction and the + y direction of the display image 300.
  • the coordinates of the video pixels at the four vertices of this divided image 301 are P51 (0, Q), P52 (P / 2-1, Q), P53 (P / 2-1, Q / 2 + 1), P54 (0, Q / 2 + 1).
  • the divided image 302 is located in the + x direction and the + y direction of the display image 300.
  • the coordinates of the video pixels at the four vertices of this divided image 302 are P61 (P / 2 + 1, Q), P62 (P, Q), P63 (P, Q / 2 + 1), P64 (P / 2 + 1, Q / 2 + 1). It is.
  • the divided image 303 is located in the + x direction and the ⁇ y direction of the display image 300.
  • the coordinates of the video pixels at the four vertices of this divided image 303 are P71 (P / 2 + 1, Q / 2-1), P72 (P, Q / 2-1), P73 (P, 0), P74 (P / 2 + 1,0).
  • the divided image 304 is located in the ⁇ x direction and the ⁇ y direction of the display image 300.
  • the coordinates of the video pixels at the four vertices of this divided image 304 are P81 (0, Q / 2-1), P82 (P / 2-1, Q / 2-1), P83 (P / 2-1, 0). ), P84 (0, 0).
  • the multi-screen display control apparatus 100 includes a connection interface 101, a control unit 102, an input unit 103, a signal dividing unit 104, a storage unit 105, a decompression control unit 1006, a signal processing unit 107, and a display unit 108.
  • a configuration including the connection interface 101, the control unit 102, the signal division unit 104, the storage unit 105, the expansion control unit 1006, and the signal processing unit 107 is referred to as a display control unit 109.
  • the display unit 108 is a general term for the display devices 201 to 204.
  • the connection interface 101 is connected to a plurality of display devices 201-204.
  • the connection interface 101 inputs information indicating the display IDs 1 to 4 from the display devices 201 to 204, and outputs information indicating the display ID (hereinafter referred to as display identification information) to the control unit 102.
  • the control unit 102 inputs display identification information from the connection interface 101, counts the number of display devices 201 to 204 that configure the multi-screen 200 based on the display identification information, and displays the display device 201 that configures the multi-screen 200. Screen number information indicating the number of ⁇ 204 is acquired.
  • the control unit 102 outputs the display identification information and the screen number information to the signal dividing unit 104.
  • the input unit 104 inputs a video signal and outputs it to the signal dividing unit 104 and the signal processing unit 107.
  • This video signal is a signal for displaying a video on the display unit 108 (display devices 201 to 204), and includes, for example, numerical values of RGB color coordinates, a white balance value, a gamma value and the like constituting the video.
  • the color coordinates are not limited to this, and may be color coordinates such as CYM, CYMK, HSI, HSV, YCbCr, YUV, and YIQ.
  • the video signal includes information indicating the size of the image (vertical size ⁇ horizontal size) and the number of pixels.
  • the display image indicated by the video signal is an image as shown in FIG. 4A.
  • the input unit 104 inputs a video signal S10 representing an image as shown in FIG. 4A.
  • the signal dividing unit 104 inputs screen number information and display identification information from the control unit 102 and also receives a video signal from the input unit 103.
  • the signal dividing unit 104 divides the display image 300 indicated by the video signal S10 with an image size corresponding to a plurality of display images constituting the multi-screen 200 based on the screen number information.
  • the signal dividing unit 104 divides the display image indicated by the video signal S10 into four so that the areas are equal.
  • the display image indicated by the video signal S10 is divided into divided images 301 to 304 (see FIG. 4B).
  • the signal dividing unit 104 acquires position information indicating the positions of the divided images 301 to 304 on the multi-screen 200 that is determined in advance according to the display identification information based on the screen number information and the display identification information.
  • the signal dividing unit 104 refers to the position information table indicating the position information associated with the display identification information for each screen number information, and based on the screen number information and the display identification information input from the control unit 102. , Get location information.
  • the position information table includes, as position information, information indicating the upper left screen and information indicating the upper right screen in the display IDs 1 to 4 of the display identification information.
  • 11 is a table that associates information indicating a lower right screen and information indicating a lower left screen.
  • This position information table is stored in the storage unit 105.
  • the signal dividing unit 104 indicates that the divided images 301 to 304 are information indicating that it is an upper left screen, information indicating that it is an upper right screen, and a lower right screen as position information.
  • the information indicating that the information indicating the lower left screen is associated is output to the decompression control unit 1006.
  • the storage unit 105 stores expansion rate information indicating the distribution of the expansion rate determined in advance for each of the divided images 301 to 304.
  • the expansion rate of each divided image is determined in advance according to the number of divisions of the multi-screen and the position of the divided image in the multi-screen.
  • the expansion rate information will be described with reference to FIG.
  • FIG. 6 is a diagram conceptually showing a predetermined expansion rate for each divided image. As shown in FIG. 6, the expansion rate in the multi-screen 200 changes in the y-axis direction over the x-axis.
  • the expansion rate at the center of the screen is “1”, the expansion rate at both ends of the screen is maximized, and the expansion rate increases from the center toward both ends.
  • the expansion rate in the + x-axis direction is small and the expansion rate in the -x-axis direction is large.
  • the expansion rate in the + x-axis direction is large and the expansion rate in the -x-axis direction is small.
  • This is information in which an expansion rate is associated with each.
  • the expansion rate information corresponding to the divided image 301 and the divided image 304 includes an expansion rate T4 for a divided area of 0 ⁇ x ⁇ 50 and an expansion rate T3 for a divided area of 50 ⁇ x ⁇ 60.
  • the expansion rate T2 is associated with the divided area 60 ⁇ x ⁇ 80
  • the expansion rate information corresponding to the divided image 302 and the divided image 303 includes an expansion rate T1 for a divided area of 0 ⁇ x ⁇ 20 and an expansion rate T2 for a divided area of 20 ⁇ x ⁇ 40.
  • the expansion rate T3 is associated with the divided area of 40 ⁇ x ⁇ 50
  • the decompression control unit 1006 refers to the storage unit 105 to determine the pixel decompression rate of each divided image based on the video signal divided according to the divided image and the position information, and to decompress the video pixel in the video signal.
  • the display setting information indicating the rate and the display ID of the displayed display screen is output to the signal processing unit 107.
  • the signal processing unit 107 processes the video signal input from the input unit 103 based on the display setting information input from the expansion control unit 1006, and changes the expansion rate of the video pixel according to the position of the multi-screen 200.
  • S10 ′ is output to the display unit.
  • the signal processing unit 107 divides the video signal S10 into video signals S11 to S14 corresponding to the display devices 201 to 204 according to the number of screens constituting the multi-screen 200 based on the display setting information. .
  • the signal processing unit 107 outputs the video signals S11 ′ to S14 ′ in which the expansion ratios of the video pixels included in the video signals S11 to S14 are changed to the display unit 108 based on the display setting information. That is, the signal processing unit 107 outputs the video signals S11 ′ to S14 ′ to the display devices 201 to 204, respectively.
  • the display unit 108 is a general term for the display devices 201 to 204 as described above, and displays video based on the video signal input from the signal processing unit 107.
  • the display devices 201 to 204 receive the video signals S11 ′ to S14 ′ and display images based on the video signals S11 ′ to S14 ′.
  • FIG. 7 is a flowchart illustrating an example of the multi-screen display control method according to the present embodiment.
  • Step ST1 multi-screen setting is performed in the multi-screen display control device 100. That is, the display devices 201 to 204 are connected in order, and the display IDs 1 to 4 are assigned to them. The display IDs 1 to 4 are stored in a storage unit built in each of the display devices 201 to 204.
  • display identification information indicating the display IDs 1 to 4 is input from the display devices 201 to 204 to the control unit 102. To do.
  • Step ST2 The control unit 102 counts the number of display devices 201 to 204 constituting the multi-screen 200 based on the display identification information input from the connection interface 101, and displays screen number information indicating the number of display devices constituting the multi-screen. Acquired and output to the signal dividing unit 104 together with the display identification information. In the present embodiment, the control unit 102 acquires information indicating “4” as the screen number information, and outputs the information to the signal dividing unit 104. On the other hand, the input unit 103 receives the video signal S10 and outputs it to the signal dividing unit 104 and the signal processing unit 107.
  • the signal dividing unit 104 divides the display image 300 indicated by the video signal S10 based on the number indicated by the input screen number information so that the areas of the divided images are equal.
  • the signal dividing unit 104 divides the display image 300 indicated by the video signal S10 into four so that the areas are equal.
  • the display image 300 indicated by the video signal is divided into divided images 301 to 304 (see FIG. 4B).
  • the signal dividing unit 104 acquires video pixel information for specifying video pixels constituting each of the divided images 301 to 304, and associates them with the corresponding display IDs 1 to 4, respectively. That is, the signal dividing unit 104 uses the coordinates ⁇ P51 (0, Q), P52 (P / 2-1, Q) of the video pixels at the four vertices as the video pixel information for specifying the video pixels constituting the divided image 301. , P53 (P / 2-1, Q / 2 + 1), P54 (0, Q / 2 + 1) ⁇ are acquired, and information in which the display ID 1 is associated with this video pixel information is output to the expansion control unit 106. .
  • the signal dividing unit 104 uses the coordinates of the video pixels at the four vertices ⁇ P61 (P / 2 + 1, Q), P62 (P, Q) as video pixel information for specifying the video pixels constituting the divided image 302. , P63 (P, Q / 2 + 1), P64 (P / 2 + 1, Q / 2 + 1) ⁇ is acquired, and information in which the display ID 2 is associated with the video pixel information is output to the expansion control unit 106.
  • the signal dividing unit 104 uses the coordinates of the video pixels at four vertices ⁇ P71 (P / 2 + 1, Q / 2-1), P72 (P, Q / 2-1), P73 (P, 0), P74 (P / 2 + 1, 0) ⁇ are acquired, and information in which the display ID 3 is associated with this video pixel information is output to the expansion control unit l06.
  • the signal dividing unit 103 uses the coordinates of the video pixels at the four vertices ⁇ P81 (0, Q / 2-1), P82 (P / 2-1, 1) as video pixel information for specifying the video pixels constituting the divided image 304.
  • Q / 2-1), P83 (P / 2-1, 0), P84 (0, 0) ⁇ is acquired, and information in which the display ID 4 is associated with this video pixel information is sent to the expansion control unit 1006. Output.
  • the signal dividing unit 104 refers to the position information table indicating the position information associated with the display identification information for each screen number information, and based on the screen number information and the display identification information input from the control unit 102, Position information indicating the positions of the display screens 211 to 214 in the multi-screen 200, that is, the positions of the divided images 301 to 304 in the display image 300 is acquired.
  • the signal dividing unit 104 refers to the position information table, and the divided images 301 to 304 associated with the display IDs 1 to 4 of the display identification information are respectively displayed as position information on the upper left screen.
  • the signal dividing unit 104 is information that associates display ID1 with position information that indicates the upper left screen, information that associates display ID2 with position information that indicates the upper right screen, and is the lower right screen.
  • the information in which the display ID 3 is associated with the position information indicating, and the information in which the display ID 4 is associated with the position information indicating the lower left screen are output to the decompression control unit 106.
  • the expansion control unit 1006 refers to the storage unit 105 and determines the expansion rate of the video pixels constituting each of the divided images 301 to 304 based on the position information associated with the display IDs 1 to 4. In other words, the expansion control unit 1006 uses the expansion rate information indicating the distribution of the change in the expansion rate in each of the divided images 301 to 304 that is determined in advance according to the position in the multi-screen 200, for each of the divided images 301 to 304. The expansion ratios T1 to T4 for each divided area are determined.
  • the expansion control unit 1006 determines the expansion rate T1 to T4 of each video pixel for each divided area of each divided image 301 to 304 based on the position information associated with the display IDs 1 to 4, and each video pixel. Display setting information in which the expansion rate is associated with T1 to T4 is output to the signal processing unit 107.
  • Step ST4 The signal processing unit 107 processes the video signal input from the input unit 103 based on the display setting information input from the expansion control unit 1006, and changes the expansion rate of the video pixel according to the position of the multi-screen 200.
  • S10 ′ is output to the display unit. That is, for example, the signal processing unit 107 divides the video signal S10 into video signals S11 to S14 corresponding to the display devices 201 to 204 according to the number of screens constituting the multi-screen 200 based on the display setting information. .
  • the signal processing unit 107 determines the expansion rate of the video pixels included in the video signals S11 to S14 based on the display setting information, and outputs the video signals S11 ′ to S14 ′ having the determined expansion rate to the display unit 108. To do. That is, the signal processing unit 107 outputs the video signals S11 ′ to S14 ′ to the display devices 201 to 204, respectively, based on the display ID.
  • Step ST5 The display devices 201 to 204 receive the video signals S11 ′ to S14 ′ and display images based on the video signals S11 ′ to S14 ′.
  • the expansion ratio of the central portion of the display image 300 can be set to “1”. Can be constant. Further, the display image 300 can be displayed according to the size of the multi-screen 200 by enlarging and displaying the images at both ends of the display image 300.
  • FIGS. 8 and 9 are diagrams showing a comparison between a display image displayed on a multi-screen by a display control device not according to the present invention and a display image displayed on a multi-screen by the multi-screen display control device 100 according to the present invention. It is.
  • a black non-display portion is formed (see image 801 in FIG. 8).
  • the expansion ratio of the video pixels is uniformly set to 1 or more, the display image may be stretched and an accurate image may not be displayed (see image 802 in FIG. 8).
  • the display control device not according to the present invention sets the expansion rate to “1” at the center of each of the display devices 901 to 904, and sets the expansion rate toward both ends of each of the display devices 901 to 904.
  • the image extends in the central portion of the multi-screen. For this reason, the image of the central portion of the multi-screen cannot be displayed accurately.
  • the display image 300 is displayed in accordance with the size of the multi-screen 200 by expanding and displaying the images at both ends of the display image 300.
  • the image displayed in the central portion can be displayed accurately.
  • the operation process in each configuration of the multi-screen display control apparatus 100 described above can be used as a program to be executed by a computer or a computer-readable recording medium as the program, and is read and executed by the computer system.
  • the “computer system” here includes a CPU, various memories, an OS, and hardware such as peripheral devices. Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
  • the “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.
  • the “computer-readable recording medium” refers to a volatile memory (for example, DRAM (Dynamic) in a computer system serving as a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. Randam Access Memory)) that holds a program for a certain period of time is also included.
  • the program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium.
  • the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
  • the program may be for realizing a part of the functions described above. Furthermore, what can implement
  • DESCRIPTION OF SYMBOLS 100 Multi-screen display control apparatus, 101 ... Connection interface part, 102 ... Control part, 103 ... Input part, 104 ... Signal division part, 105 ... Memory

Abstract

A multi screen display control device is provided with: an input unit (103) that receives as input an image signal of a display image to be displayed on a multi screen configured from a plurality of display screens of a plurality of display devices; a storage unit (105) that stores elongation rate information that is information indicating the elongation rate of each pixel which is predetermined according to the position in the multi screen, defining a first elongation rate of pixels at the end sections inside the multi screen to be one or greater, and defining a second elongation rate for pixels at the center section in the multi screen to be a fixed value smaller than the first elongation rate; and a display control unit (109) that references the storage unit, and with respect to the partitioned image which is partitioned from the display image according to the number of display screens, determines the elongation rate corresponding to the position of the partitioned image inside the multi screen, and displays the display image on the display device on the basis of the elongation rate.

Description

多画面表示制御装置、多画面表示制御方法、および多画面表示制御プログラムMulti-screen display control device, multi-screen display control method, and multi-screen display control program
　本発明は、複数の表示装置の複数の画面により構成されるマルチ画面への表示を制御する多画面表示制御装置、多画面表示制御方法、および多画面表示制御プログラムに関する。 The present invention relates to a multi-screen display control device, a multi-screen display control method, and a multi-screen display control program for controlling display on a multi-screen composed of a plurality of screens of a plurality of display devices.
　表示装置の表示方法として、アスペクト比４：３と規定されている画像を、アスペクト比１６：９と規定されているワイド表示にするアップスケーリング方法がある。このアップスケーリング方法の一例としては、画面中央と画像外側の伸張率を変えて表示する方法がある。
　この表示方法として、画面中央の伸張率を等倍にし、画面外側に近づくにしたがって伸張率を上げていくという方法である（例えば、特許文献１参照）。これにより、画面中央に表示されていることが多い重要な被写体が、間延びして表示されることを回避するとともに、ワイド画面を有効に使用してアップスケーリングした画を表示することができる。 As a display method of the display device, there is an upscaling method in which an image defined with an aspect ratio of 4: 3 is changed to a wide display defined with an aspect ratio of 16: 9. As an example of this upscaling method, there is a method of displaying by changing the expansion ratio between the center of the screen and the outside of the image.
As this display method, the expansion rate at the center of the screen is set to the same magnification, and the expansion rate is increased as it approaches the outside of the screen (see, for example, Patent Document 1). Accordingly, it is possible to avoid an important subject that is often displayed at the center of the screen from being displayed in an extended manner, and to display an upscaled image by effectively using the wide screen.
特開２００３－１８９２６６号公報JP 2003-189266 A
　しかしながら、上述の特許文献１に記載の方法は、１台の表示装置における表示を制御する方法である。よって、複数台の表示装置の複数の表示画面を並べ１つの画面として、１つの画像を表示する多画面表示装置（マルチディスプレイ）には上述の方法を適用することができない問題がある。
　例えば、４台の表示装置の４つの矩形状の表示画面が１つの矩形状の画面（マルチ画面）を構成する場合、このマルチ画面の中央は、各表示装置の中央と一致しない。このため、各表示装置の画面中央と画面外側との伸張率を変更したとしても、マルチ画面に表示する１つの画像の画像中央の倍率を変更せずに表示することはできない。このため、上述の特許文献１に記載の方法によりマルチ画面の表示した場合、マルチ画面全体の中央部分の表示倍率が等倍にならず、１台の表示装置において表示するような画像を表示することができない。 However, the method described in Patent Document 1 described above is a method for controlling display on a single display device. Therefore, there is a problem that the above method cannot be applied to a multi-screen display device (multi-display) that displays a single image by arranging a plurality of display screens of a plurality of display devices as one screen.
For example, when four rectangular display screens of four display devices constitute one rectangular screen (multi-screen), the center of the multi-screen does not coincide with the center of each display device. For this reason, even if the expansion ratio between the center of the screen and the outside of the screen of each display device is changed, the display cannot be displayed without changing the magnification of the center of one image displayed on the multi-screen. For this reason, when a multi-screen is displayed by the method described in Patent Document 1, the display magnification of the central portion of the entire multi-screen is not equal, and an image that can be displayed on one display device is displayed. I can't.
　本発明は、このような事情を考慮し、上記の問題を解決すべくなされたものであって、その目的は、複数台の表示装置による複数の表示画面が１つのマルチ画面を構成する場合において、マルチ画面のアスペクト比と異なるアスペクト比の画像をマルチ画面に表示す際、画像中央部分の表示倍率を一定にすることができる多画面表示制御装置、多画面表示制御方法、および多画面表示制御プログラムを提供することにある。 The present invention has been made in consideration of such circumstances and has been made to solve the above-described problem. The object of the present invention is to provide a case where a plurality of display screens by a plurality of display devices constitute one multi-screen. Multi-screen display control device, multi-screen display control method, and multi-screen display control capable of making the display magnification of the central portion of the image constant when displaying an image having an aspect ratio different from the multi-screen aspect ratio on the multi-screen To provide a program.
　上記問題を解決するために、本発明に係る多画面表示制御装置は、複数の表示装置の複数の表示画面により構成されるマルチ画面に表示させる表示画像を示す映像信号を入力する入力部と、前記マルチ画面内における位置に応じて予め決められている各画素の伸張率を示す情報であって、前記マルチ画面内における端部分の画素の第１伸張率を１以上と規定するとともに、前記マルチ画面内における中央部分の画素の第２伸張率を前記第１の伸張率よりも小さい一定値と規定する伸張率情報を記憶する記憶部と、前記記憶部を参照して、前記表示画面の数に応じて前記表示画像が分割された分割画像に対して、前記マルチ画面内における当該分割画像の位置に対応する前記伸張率を求め、当該伸張率に基づき前記表示画像を前記表示装置に表示させる表示制御部とを備えることを特徴とする。 In order to solve the above problem, a multi-screen display control device according to the present invention includes an input unit that inputs a video signal indicating a display image to be displayed on a multi-screen configured by a plurality of display screens of a plurality of display devices; Information indicating an expansion rate of each pixel determined in advance according to a position in the multi-screen, wherein a first expansion rate of pixels at an end portion in the multi-screen is defined as 1 or more, and the multi A storage unit that stores expansion rate information that defines a second expansion rate of a pixel at a central portion in the screen as a constant value smaller than the first expansion rate, and the number of display screens with reference to the storage unit. In response to the divided image obtained by dividing the display image, the expansion ratio corresponding to the position of the divided image in the multi-screen is obtained, and the display image is transferred to the display device based on the expansion ratio. Characterized in that it comprises a display control unit that presents.
　上記問題を解決するために、本発明に係る多画面表示制御方法は、複数の表示装置の複数の表示画面により構成されるマルチ画面に表示させる表示画像を示す映像信号を入力するステップと、前記マルチ画面内における位置に応じて予め決められている各画素の伸張率を示す情報であって、前記マルチ画面内における端部分の画素の第１伸張率を１以上と規定するとともに、前記マルチ画面内における中央部分の画素の第２伸張率を前記第１の伸張率よりも小さい一定値と規定する伸張率情報を記憶するステップと、前記記憶部を参照して、前記表示画面の数に応じて前記表示画像が分割された分割画像に対して、前記マルチ画面内における当該分割画像の位置に対応する前記伸張率を求め、当該伸張率に基づき前記表示画像を前記表示装置に表示させるステップと、を備えることを特徴とする。 In order to solve the above problem, a multi-screen display control method according to the present invention includes a step of inputting a video signal indicating a display image to be displayed on a multi-screen configured by a plurality of display screens of a plurality of display devices; Information indicating the expansion rate of each pixel determined in advance according to the position in the multi-screen, wherein the first expansion rate of the pixel at the end portion in the multi-screen is defined as 1 or more, and the multi-screen A step of storing expansion rate information defining a second expansion rate of the central pixel in the inside as a constant value smaller than the first expansion rate, and referring to the storage unit according to the number of display screens For the divided image obtained by dividing the display image, the expansion rate corresponding to the position of the divided image in the multi-screen is obtained, and the display image is displayed on the display device based on the expansion rate. Characterized in that it comprises the steps of: displaying on.
　上記問題を解決するために、本発明に係る多画面表示制御プログラムは、コンピュータを、複数の表示装置の複数の表示画面により構成されるマルチ画面に表示させる表示画像を示す映像信号を入力する入力部手段、前記マルチ画面内における位置に応じて予め決められている各画素の伸張率を示す情報であって、前記マルチ画面内における端部分の画素の第１伸張率を１以上と規定するとともに、前記マルチ画面内における中央部分の画素の第２伸張率を前記第１の伸張率よりも小さい一定値と規定する伸張率情報を記憶する記憶手段、前記記憶部を参照して、前記表示画面の数に応じて前記表示画像が分割された分割画像に対して、前記マルチ画面内における当該分割画像の位置に対応する前記伸張率を求め、当該伸張率に基づき前記表示画像を前記表示装置に表示させる表示制御手段として機能させるためのプログラムであることを特徴とする。 In order to solve the above problem, a multi-screen display control program according to the present invention is an input for inputting a video signal indicating a display image to be displayed on a multi-screen configured by a plurality of display screens of a plurality of display devices. Information indicating an expansion rate of each pixel determined in advance according to a position in the multi-screen, wherein the first expansion rate of the pixel at the end portion in the multi-screen is defined as 1 or more. , Storage means for storing expansion rate information that defines a second expansion rate of the central pixel in the multi-screen as a constant value smaller than the first expansion rate, referring to the storage unit, and the display screen For the divided image obtained by dividing the display image according to the number of images, the expansion rate corresponding to the position of the divided image in the multi-screen is obtained, and the expansion rate is calculated based on the expansion rate. Characterized in that the shown image is a program for functioning as display control means for displaying on said display device.
　本発明によると、複数台の表示装置による複数の表示画面が１つのマルチ画面を構成する場合において、マルチ画面のアスペクト比と異なるアスペクト比の画像をマルチ画面に表示す際、画像中央部分の表示倍率を一定にすることができる。 According to the present invention, when a plurality of display screens by a plurality of display devices constitute one multi-screen, when an image having an aspect ratio different from the aspect ratio of the multi-screen is displayed on the multi-screen, the display of the center portion of the image is displayed. The magnification can be made constant.
本実施形態に係る多画面表示制御装置の構成の一例を示すブロック図である。It is a block diagram which shows an example of a structure of the multiscreen display control apparatus which concerns on this embodiment. 本実施形態に係るマルチ画面を構成する複数の画面の組み合わせの一例を示す図である。It is a figure which shows an example of the combination of the some screen which comprises the multiscreen which concerns on this embodiment. 本実施形態に係るマルチ画面を構成する複数の画素の構成の一例を示す図である。It is a figure which shows an example of a structure of the some pixel which comprises the multiscreen which concerns on this embodiment. 本実施形態に係るマルチ画面に表示される表示画像の一例を示す図である。It is a figure which shows an example of the display image displayed on the multiscreen which concerns on this embodiment. 本実施形態に係るマルチ画面に表示される表示画像の一例を示す図である。It is a figure which shows an example of the display image displayed on the multiscreen which concerns on this embodiment. 本実施形態に係る表示画像における画素の構成の一例を示す図である。It is a figure which shows an example of a structure of the pixel in the display image which concerns on this embodiment. 本実施形態に係る分割画像ごとに予め決められている伸張率を概念的に示す図である。It is a figure which shows notionally the expansion rate predetermined for every divided image which concerns on this embodiment. 本実施形態に係る多画面表示制御方法の一例を示すフローチャートである。It is a flowchart which shows an example of the multiscreen display control method which concerns on this embodiment. 本発明によらない画像表示例と本発明に係る画像表示例を説明するための図である。It is a figure for demonstrating the image display example which is not based on this invention, and the image display example which concerns on this invention. 本発明によらない画像表示例と本発明に係る画像表示例を説明するための図である。It is a figure for demonstrating the image display example which is not based on this invention, and the image display example which concerns on this invention.
［第１実施形態］
　次に、発明を実施するための一形態について図面を参照して詳細に説明する。
　図１は、本実施形態に係る多画面表示制御装置１００の構成の一例を示す図である。この多画面表示制御装置１００は、複数の表示装置を組み合わせて、その複数の画面により１つの画面を構成するマルチ画面への表示制御を複数の表示装置に対する行う。本実施形態において、この複数の画面を組み合わせることにより構成される１つの画面を、マルチ画面という。 [First Embodiment]
Next, an embodiment for carrying out the invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating an example of a configuration of a multi-screen display control apparatus 100 according to the present embodiment. The multi-screen display control device 100 performs a display control on a plurality of display devices by combining a plurality of display devices and displaying a multi-screen that forms one screen by the plurality of screens. In the present embodiment, one screen configured by combining the plurality of screens is referred to as a multi-screen.
　このマルチ画面を構成する複数の表示画面の組み合わせの一例について、図２を参照して説明する。図２は、多画面表示制御装置１００が表示制御するマルチ画面を構成する複数の画面の組み合わせの例を示す図である。
　図２に示すマルチ画面２００は、４台の表示装置２０１～２０４による４面の表示画面２１１～２１４から構成されている。このマルチ画面２００では、縦に２つ、横に２つの表示画面２１１～２１４が並べられている。これら表示装置２０１～２０４には、それぞれ固有の識別情報（以下、表示ＩＤという）が割り当てられる。 An example of a combination of a plurality of display screens constituting this multi-screen will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a combination of a plurality of screens constituting a multi-screen that is controlled by the multi-screen display control apparatus 100.
The multi-screen 200 shown in FIG. 2 is composed of four display screens 211 to 214 by four display devices 201 to 204. In the multi-screen 200, two display screens 211 to 214 are arranged in the vertical direction and in the horizontal direction. Each of the display devices 201 to 204 is assigned unique identification information (hereinafter referred to as a display ID).
　これら表示装置２０１～２０４は、互いに直列的に接続されている。つまり、デイジーチェーン式に接続されている。これら表示装置２０１～２０４は、一方の出力端子が他方の入力端子に接続されるように、順次接続される。表示装置２０１～２０４は、自身の出力端子が他方の入力端子と接続されることで、自身に割り当てられている表示ＩＤの次の順番を示す表示ＩＤを、他方の表示表示装置に割り当てる。 These display devices 201 to 204 are connected in series with each other. In other words, they are connected in a daisy chain manner. These display devices 201 to 204 are sequentially connected such that one output terminal is connected to the other input terminal. Each of the display devices 201 to 204 assigns a display ID indicating the next order of display IDs assigned to itself to the other display display device by connecting its output terminal to the other input terminal.
　本実施形態において、表示装置２０１の出力端子と表示装置２０２の入力端子が最初に接続されると、表示装置２０１は、表示ＩＤの初期値である表示ＩＤ１を割り当てるとともに、表示装置２０２に対して表示ＩＤ２を割り当てる。同様にして、表示装置２０２の出力端子と表示装置２０３の入力端子が次に接続されると、表示装置２０２は、表示装置２０３に対して表示ＩＤ３を割り当てる。また、表示装置２０３の出力端子と表示装置２０４の入力端子が次に接続されると、表示装置２０３は、表示装置２０４に対して表示ＩＤ４を割り当てる。
　つまり、表示装置２０１～２０４には、それぞれ、表示ＩＤ１～４が割り当てられる。また、表示ＩＤ１～４には、マルチ画面２００を構成する表示画面２０１～２０４の数に応じて、マルチ画面における位置を示す位置情報が予め決められている。 In the present embodiment, when the output terminal of the display device 201 and the input terminal of the display device 202 are first connected, the display device 201 assigns the display ID 1 that is the initial value of the display ID and also to the display device 202. Assign display ID 2. Similarly, when the output terminal of the display device 202 and the input terminal of the display device 203 are next connected, the display device 202 assigns a display ID 3 to the display device 203. When the output terminal of the display device 203 and the input terminal of the display device 204 are next connected, the display device 203 assigns a display ID 4 to the display device 204.
That is, display IDs 1 to 4 are assigned to the display devices 201 to 204, respectively. For the display IDs 1 to 4, position information indicating the position on the multi-screen is determined in advance according to the number of display screens 201 to 204 constituting the multi-screen 200.
　表示装置２０１は、その表示画面２１１が、マルチ画面２００の－ｘ方向かつ＋ｙ方向の画面（左上画面）に位置されており、表示ＩＤ１が割り当てられている。この表示ＩＤ１には、マルチ画面２００における配置位置を示す配置位置情報として、左上画面であることを示す情報が予め割り当てられている。
　表示装置２０２は、その表示画面２１２が、マルチ画面２００の＋ｘ方向かつ＋ｙ方向の画面（右上画面）に位置されており、表示ＩＤ２が割り当てられている。この表示ＩＤ２には、マルチ画面２００における配置位置を示す配置位置情報として、右上画面であることを示す情報が予め割り当てられている。
　表示装置２０３は、その表示画面２１３が、マルチ画面２００の＋ｘ方向かつ－ｙ方向の画面（右下画面）に位置されており、表示ＩＤ３が割り当てられている。この表示ＩＤ３には、マルチ画面２００における配置位置を示す配置位置情報として、右下画面であることを示す情報が予め割り当てられている。
　表示装置２０４は、その表示画面２１４が、マルチ画面２００の－ｘ方向かつ－ｙ方向の画面（左下画面）に位置されており、表示ＩＤ４が割り当てられている。この表示ＩＤ４には、マルチ画面２００における配置位置を示す配置位置情報として、左下画面であることを示す情報が予め割り当てられている。 In the display device 201, the display screen 211 is located on the screen (upper left screen) in the −x direction and the + y direction of the multi-screen 200, and is assigned display ID1. Information indicating the upper left screen is pre-assigned to the display ID 1 as arrangement position information indicating the arrangement position on the multi-screen 200.
In the display device 202, the display screen 212 is located on the screen in the + x direction and the + y direction (upper right screen) of the multi-screen 200, and is assigned display ID2. Information indicating the upper right screen is pre-assigned to the display ID 2 as the arrangement position information indicating the arrangement position on the multi-screen 200.
In the display device 203, the display screen 213 is positioned on the screen in the + x direction and the −y direction (lower right screen) of the multi-screen 200, and the display ID 3 is assigned. Information indicating the lower right screen is pre-assigned to the display ID 3 as the arrangement position information indicating the arrangement position on the multi-screen 200.
The display device 204 has its display screen 214 positioned on the screen in the −x direction and −y direction (lower left screen) of the multi-screen 200, and is assigned display ID4. Information indicating that the screen is the lower left screen is assigned to the display ID 4 in advance as the position information indicating the position on the multi-screen 200.
　次に、これら表示画面２１１～２１４により構成されるマルチ画面２００を構成する画素の一例について、図３を参照して説明する。図３は、本実施形態に係るマルチ画面２００を構成する複数の画素の構成の一例を示す図である。
　図３に示す通り、本実施形態に係るマルチ画面２００は、ｘ軸の長さの方が、ｙ軸の長さに比べて長い長方形であって、ｍ×ｎのピクセルにより構成される画面である。つまり、ｍ＞ｎである。
　このマルチ画面２００は、表示装置２０１～２０４の４つの表示画面２１１～２１４により構成されている。なお、それぞれの表示画面２１１～２１４における画素（以下、ディスプレイ画素）の数がそれぞれ同じであり、縦と横のアスペクト比も同じである。 Next, an example of the pixels constituting the multi-screen 200 constituted by the display screens 211 to 214 will be described with reference to FIG. FIG. 3 is a diagram illustrating an example of a configuration of a plurality of pixels constituting the multi-screen 200 according to the present embodiment.
As illustrated in FIG. 3, the multi-screen 200 according to the present embodiment is a screen configured by m × n pixels, in which the length of the x-axis is longer than the length of the y-axis. is there. That is, m> n.
The multi-screen 200 includes four display screens 211 to 214 of the display devices 201 to 204. Note that the number of pixels (hereinafter referred to as display pixels) in each of the display screens 211 to 214 is the same, and the aspect ratio in the vertical and horizontal directions is also the same.
　表示画面２１１は、マルチ画面２００の－ｘ方向かつ＋ｙ方向の画面に位置されている。この表示画面２１１の４つ頂点のディスプレイ画素の座標は、Ｐ１１（０，ｎ）、Ｐ１２（ｍ／２－１，ｎ）、Ｐ１３（ｍ／２－１，ｎ／２＋１）、Ｐ１４（０，ｎ／２＋１）である。
　表示画面２１２は、マルチ画面２００の＋ｘ方向かつ＋ｙ方向の画面に位置されている。この表示画面２１２の４つ頂点のディスプレイ画素の座標は、Ｐ２１（ｍ／２＋１，ｎ）、Ｐ２２（ｍ，ｎ）、Ｐ２３（ｍ，ｎ／２＋１）、Ｐ２４（ｍ／２＋１，ｎ／２＋１）である。
　表示画面２１３は、マルチ画面２００の＋ｘ方向かつ－ｙ方向の画面に位置されている。この表示画面２１３の４つ頂点のディスプレイ画素の座標は、Ｐ３１（ｍ／２＋１，ｎ／２－１）、Ｐ３２（ｍ，ｎ／２－１）、Ｐ３３（ｍ，０）、Ｐ３４（ｍ／２＋１，０）である。
　表示画面２１４は、マルチ画面２００の－ｘ方向かつ－ｙ方向の画面に位置されている。この表示画面２１４の４つ頂点のディスプレイ画素の座標は、Ｐ４１（０，ｎ／２－１）、Ｐ４２（ｍ／２－１，ｎ／２－１）、Ｐ４３（ｍ／２－１，０）、Ｐ４４（０，０）である。 The display screen 211 is located on the screen in the −x direction and the + y direction of the multi-screen 200. The coordinates of the display pixels at the four vertices of the display screen 211 are P11 (0, n), P12 (m / 2-1, n), P13 (m / 2-1, n / 2 + 1), P14 (0, n / 2 + 1).
The display screen 212 is located on the screen in the + x direction and the + y direction of the multi-screen 200. The coordinates of the display pixels at the four vertices of the display screen 212 are P21 (m / 2 + 1, n), P22 (m, n), P23 (m, n / 2 + 1), P24 (m / 2 + 1, n / 2 + 1). It is.
The display screen 213 is positioned on the screen of the multi screen 200 in the + x direction and the −y direction. The coordinates of the display pixels at the four vertices of the display screen 213 are P31 (m / 2 + 1, n / 2-1), P32 (m, n / 2-1), P33 (m, 0), P34 (m / 2 + 1,0).
The display screen 214 is positioned on the screen in the −x direction and −y direction of the multi-screen 200. The coordinates of the display pixels at the four vertices of the display screen 214 are P41 (0, n / 2-1), P42 (m / 2-1, n / 2-1), P43 (m / 2-1, 0). ), P44 (0, 0).
　次に、このマルチ画面２００に表示される画像の一例について、図４Ａおよび図４Ｂを参照して説明する。図４Ａおよび図４Ｂは、マルチ画面２００に表示される画像の一例を示す図である。図４Ａには、マルチ画面２００に表示される画像の一例である表示画像３００を示す。図４Ｂには、この表示画像３００を４分割した画像を示す。
　図４Ａに示す通り、表示画像３００は、ｘ軸の長さの方が、ｙ軸の長さに比べて長い長方形であって、Ｐ×Ｑのピクセルにより構成される画像である。つまり、Ｐ＞Ｑである。
　表示画像３００には、中央に花の画が表わされる画像であり、その花の周辺には、背景画像が表わされている。
　また、表示画像３００のアスペクト比Ｐ：Ｑは、マルチ画面２００のアスペクト比ｍ：ｎと異なる。本実施形態において、アスペクト比Ｐ：Ｑは４：３であり、アスペクト比ｍ：ｎは１６：９である。なお、表示画像３００を構成する複数の画素を、以下、映像画素という。
　図４Ｂに示す通り、表示画像３００を面積が均等になるように４分割した場合、表示画像３００は、４つの分割画像３０１～３０４により構成される。 Next, an example of an image displayed on the multi-screen 200 will be described with reference to FIGS. 4A and 4B. 4A and 4B are diagrams illustrating an example of an image displayed on the multi-screen 200. FIG. FIG. 4A shows a display image 300 that is an example of an image displayed on the multi-screen 200. FIG. 4B shows an image obtained by dividing the display image 300 into four.
As shown in FIG. 4A, the display image 300 is an image composed of pixels of P × Q, in which the length of the x-axis is longer than the length of the y-axis. That is, P> Q.
The display image 300 is an image in which a flower image is displayed in the center, and a background image is displayed around the flower.
Further, the aspect ratio P: Q of the display image 300 is different from the aspect ratio m: n of the multi-screen 200. In this embodiment, the aspect ratio P: Q is 4: 3, and the aspect ratio m: n is 16: 9. The plurality of pixels constituting the display image 300 are hereinafter referred to as video pixels.
As shown in FIG. 4B, when the display image 300 is divided into four so that the area is equal, the display image 300 is composed of four divided images 301 to 304.
　次に、図５を参照して、分割画像３０１～３０４について詳細に説明する。図５は、本実施形態に係る表示画像３００における映像画素の構成の一例を示す図である。
　分割画像３０１は、表示画像３００の－ｘ方向かつ＋ｙ方向に位置されている。
この分割画像３０１の４つ頂点の映像画素の座標は、Ｐ５１（０，Ｑ）、Ｐ５２（Ｐ／２－１，Ｑ）、Ｐ５３（Ｐ／２－１，Ｑ／２＋１）、Ｐ５４（０，Ｑ／２＋１）である。
　分割画像３０２は、表示画像３００の＋ｘ方向かつ＋ｙ方向に位置されている。
この分割画像３０２の４つ頂点の映像画素の座標は、Ｐ６１（Ｐ／２＋１，Ｑ）、Ｐ６２（Ｐ，Ｑ）、Ｐ６３（Ｐ，Ｑ／２＋１）、Ｐ６４（Ｐ／２＋１，Ｑ／２＋１）である。
　分割画像３０３は、表示画像３００の＋ｘ方向かつ－ｙ方向に位置されている。
この分割画像３０３の４つ頂点の映像画素の座標は、Ｐ７１（Ｐ／２＋１，Ｑ／２－１）、Ｐ７２（Ｐ，Ｑ／２－１）、Ｐ７３（Ｐ，０）、Ｐ７４（Ｐ／２＋１，０）である。
　分割画像３０４は、表示画像３００の－ｘ方向かつ－ｙ方向に位置されている。
この分割画像３０４の４つ頂点の映像画素の座標は、Ｐ８１（０，Ｑ／２－１）、Ｐ８２（Ｐ／２－１，Ｑ／２－１）、Ｐ８３（Ｐ／２－１，０）、Ｐ８４（０，０）である。 Next, the divided images 301 to 304 will be described in detail with reference to FIG. FIG. 5 is a diagram illustrating an example of the configuration of video pixels in the display image 300 according to the present embodiment.
The divided image 301 is located in the −x direction and the + y direction of the display image 300.
The coordinates of the video pixels at the four vertices of this divided image 301 are P51 (0, Q), P52 (P / 2-1, Q), P53 (P / 2-1, Q / 2 + 1), P54 (0, Q / 2 + 1).
The divided image 302 is located in the + x direction and the + y direction of the display image 300.
The coordinates of the video pixels at the four vertices of this divided image 302 are P61 (P / 2 + 1, Q), P62 (P, Q), P63 (P, Q / 2 + 1), P64 (P / 2 + 1, Q / 2 + 1). It is.
The divided image 303 is located in the + x direction and the −y direction of the display image 300.
The coordinates of the video pixels at the four vertices of this divided image 303 are P71 (P / 2 + 1, Q / 2-1), P72 (P, Q / 2-1), P73 (P, 0), P74 (P / 2 + 1,0).
The divided image 304 is located in the −x direction and the −y direction of the display image 300.
The coordinates of the video pixels at the four vertices of this divided image 304 are P81 (0, Q / 2-1), P82 (P / 2-1, Q / 2-1), P83 (P / 2-1, 0). ), P84 (0, 0).
　図１に戻って、多画面表示制御装置１００の構成について詳細に説明する。多画面表示制御装置１００は、接続インターフェース１０１と、制御部１０２と、入力部１０３と、信号分割部１０４と、記憶部１０５と、伸張制御部ｌ０６と、信号処理部１０７と、表示部１０８とを備える。接続インターフェース１０１と、制御部１０２と、信号分割部１０４と、記憶部１０５と、伸張制御部ｌ０６と、信号処理部１０７と、を備える構成を、表示制御部１０９という。なお、表示部１０８は、表示装置２０１～２０４の総称である。 Referring back to FIG. 1, the configuration of the multi-screen display control device 100 will be described in detail. The multi-screen display control apparatus 100 includes a connection interface 101, a control unit 102, an input unit 103, a signal dividing unit 104, a storage unit 105, a decompression control unit 1006, a signal processing unit 107, and a display unit 108. Is provided. A configuration including the connection interface 101, the control unit 102, the signal division unit 104, the storage unit 105, the expansion control unit 1006, and the signal processing unit 107 is referred to as a display control unit 109. The display unit 108 is a general term for the display devices 201 to 204.
　接続インターフェース１０１は、複数の表示装置２０１～２０４と接続されている。この接続インターフェース１０１は、各表示装置２０１～２０４から、それぞれ、表示ＩＤ１～４を示す情報を入力し、この表示ＩＤを示す情報（以下、表示識別情報という）を制御部１０２に出力する。 The connection interface 101 is connected to a plurality of display devices 201-204. The connection interface 101 inputs information indicating the display IDs 1 to 4 from the display devices 201 to 204, and outputs information indicating the display ID (hereinafter referred to as display identification information) to the control unit 102.
　制御部１０２は、表示識別情報を接続インターフェース１０１から入力し、この表示識別情報に基づき、マルチ画面２００を構成する表示装置２０１～２０４の数をカウントして、マルチ画面２００を構成する表示装置２０１～２０４の数を示す画面数情報を取得する。この制御部１０２は、この表示識別情報と画面数情報を、信号分割部１０４に出力する。 The control unit 102 inputs display identification information from the connection interface 101, counts the number of display devices 201 to 204 that configure the multi-screen 200 based on the display identification information, and displays the display device 201 that configures the multi-screen 200. Screen number information indicating the number of ~ 204 is acquired. The control unit 102 outputs the display identification information and the screen number information to the signal dividing unit 104.
　入力部１０４は、映像信号を入力し、信号分割部１０４と信号処理部１０７に出力する。この映像信号は、表示部１０８（表示装置２０１～２０４）に映像を表示させるための信号であり、例えば、映像を構成するＲＧＢ色座標の数値や、ホワイトバランス値、ガンマ値等を含む。なお、色座標は、これに限られず、ＣＹＭ，ＣＹＭＫ，ＨＳＩ，ＨＳＶ，ＹＣｂＣｒ，ＹＵＶ，ＹＩＱ等の色座標であってもよい。また、映像信号は、画像のサイズ（縦寸×横寸）と画素数を示す情報を含む。本実施形態において、映像信号が示す表示画像は、図４Ａに示すような画像である。
　本実施形態において、入力部１０４は、図４Ａに示すような画像を表わす映像信号Ｓ１０を入力する。 The input unit 104 inputs a video signal and outputs it to the signal dividing unit 104 and the signal processing unit 107. This video signal is a signal for displaying a video on the display unit 108 (display devices 201 to 204), and includes, for example, numerical values of RGB color coordinates, a white balance value, a gamma value and the like constituting the video. The color coordinates are not limited to this, and may be color coordinates such as CYM, CYMK, HSI, HSV, YCbCr, YUV, and YIQ. The video signal includes information indicating the size of the image (vertical size × horizontal size) and the number of pixels. In the present embodiment, the display image indicated by the video signal is an image as shown in FIG. 4A.
In the present embodiment, the input unit 104 inputs a video signal S10 representing an image as shown in FIG. 4A.
　信号分割部１０４は、制御部１０２から画面数情報と表示識別情報を入力するとともに、入力部１０３から映像信号を入力する。
　この信号分割部１０４は、画面数情報に基づき、マルチ画面２００を構成する複数の表示画像に応じた画像サイズで、映像信号Ｓ１０が示す表示画像３００を分割する。本実施形態の場合、画面数情報は表示画面が４つであることを示すため、信号分割部１０４は、映像信号Ｓ１０が示す表示画像を面積が均等になるように４分割する。これにより、映像信号Ｓ１０が示す表示画像は、分割画像３０１～３０４に分割される（図４Ｂ参照）。 The signal dividing unit 104 inputs screen number information and display identification information from the control unit 102 and also receives a video signal from the input unit 103.
The signal dividing unit 104 divides the display image 300 indicated by the video signal S10 with an image size corresponding to a plurality of display images constituting the multi-screen 200 based on the screen number information. In the present embodiment, since the screen number information indicates that there are four display screens, the signal dividing unit 104 divides the display image indicated by the video signal S10 into four so that the areas are equal. Thus, the display image indicated by the video signal S10 is divided into divided images 301 to 304 (see FIG. 4B).
　また、信号分割部１０４は、表示識別情報に応じて予め決められているマルチ画面２００における分割画像３０１～３０４の位置を示す位置情報を、画面数情報と表示識別情報に基づき取得する。この信号分割部１０４は、例えば、画面数情報ごとに、表示識別情報に対応付けられた位置情報を示す位置情報テーブルを参照して、制御部１０２から入力する画面数情報と表示識別情報に基づき、位置情報を取得する。この位置情報テーブルは、例えば、画面数情報が４である場合、表示識別情報の表示ＩＤ１～４に、それぞれ、位置情報として、左上画面であることを示す情報、右上画面であることを示す情報、右下画面であることを示す情報、左下画面であることを示す情報を対応付けるテーブルである。この位置情報テーブルは、記憶部１０５に保存されている。
　本実施形態において、信号分割部１０４は、分割画像３０１～３０４に対し、それぞれ、位置情報として、左上画面であることを示す情報、右上画面であることを示す情報、右下画面であることを示す情報、左下画面であることを示す情報を対応付けた情報を、伸張制御部ｌ０６に出力する。 Further, the signal dividing unit 104 acquires position information indicating the positions of the divided images 301 to 304 on the multi-screen 200 that is determined in advance according to the display identification information based on the screen number information and the display identification information. For example, the signal dividing unit 104 refers to the position information table indicating the position information associated with the display identification information for each screen number information, and based on the screen number information and the display identification information input from the control unit 102. , Get location information. For example, when the screen number information is 4, the position information table includes, as position information, information indicating the upper left screen and information indicating the upper right screen in the display IDs 1 to 4 of the display identification information. FIG. 11 is a table that associates information indicating a lower right screen and information indicating a lower left screen. This position information table is stored in the storage unit 105.
In this embodiment, the signal dividing unit 104 indicates that the divided images 301 to 304 are information indicating that it is an upper left screen, information indicating that it is an upper right screen, and a lower right screen as position information. The information indicating that the information indicating the lower left screen is associated is output to the decompression control unit 1006.
　記憶部１０５は、分割画像３０１～３０４ごとに予め決められている伸張率の分布を示す伸張率情報を記憶する。この伸張率は、マルチ画面の分割数とマルチ画面内における分割画像の位置に応じて、各分割画像の伸張率が予め決められている。
　ここで、図６を参照して、伸張率情報について説明する。図６は、分割画像ごとに予め決められている伸張率を概念的に示す図である。
　図６に示す通り、マルチ画面２００における伸張率は、ｘ軸にわたって、ｙ軸方向の伸張率が変化する。画面中央の伸張率を「１」とし、画面両端の伸張率を最大として、中央から両端に向かってその伸張率が増大している。
　つまり、マルチ画面２００を構成する分割画像３０１と分割画像３０４については、＋ｘ軸方向の伸張率が小さく－ｘ軸方向の伸張率が大きくなる。一方、分割画像３０２と分割画像３０３については、＋ｘ軸方向の伸張率が大きく－ｘ軸方向の伸張率が小さくなる。 The storage unit 105 stores expansion rate information indicating the distribution of the expansion rate determined in advance for each of the divided images 301 to 304. The expansion rate of each divided image is determined in advance according to the number of divisions of the multi-screen and the position of the divided image in the multi-screen.
Here, the expansion rate information will be described with reference to FIG. FIG. 6 is a diagram conceptually showing a predetermined expansion rate for each divided image.
As shown in FIG. 6, the expansion rate in the multi-screen 200 changes in the y-axis direction over the x-axis. The expansion rate at the center of the screen is “1”, the expansion rate at both ends of the screen is maximized, and the expansion rate increases from the center toward both ends.
That is, for the divided images 301 and 304 constituting the multi-screen 200, the expansion rate in the + x-axis direction is small and the expansion rate in the -x-axis direction is large. On the other hand, for the divided image 302 and the divided image 303, the expansion rate in the + x-axis direction is large and the expansion rate in the -x-axis direction is small.
　この伸張率情報は、例えば、分割画像内のおけるｘ方向の長さの相対的長さを１００としたとき、各分割領域内をｘ＝０～１００の任意の数値で分割した複数の分割エリア毎に伸張率が対応付けられた情報である。
　例えば、分割画像３０１と分割画像３０４に対応する伸張率情報としては、０≦ｘ＜５０の分割エリアに対しては伸張率Ｔ４が、５０≦ｘ＜６０の分割エリアに対しては伸張率Ｔ３が、６０≦ｘ＜８０の分割エリアに対しては伸張率Ｔ２が、８０≦ｘ≦１００の分割エリアに対しては伸張率Ｔ１が、それぞれ対応付けられている。なお、伸張率Ｔ１＝１であり、伸張率Ｔ１＜Ｔ２＜Ｔ３＜Ｔ４の関係が成立つ。 This expansion rate information is, for example, a plurality of divided areas obtained by dividing each divided area by an arbitrary numerical value of x = 0 to 100, where the relative length of the length in the x direction in the divided image is 100. This is information in which an expansion rate is associated with each.
For example, the expansion rate information corresponding to the divided image 301 and the divided image 304 includes an expansion rate T4 for a divided area of 0 ≦ x <50 and an expansion rate T3 for a divided area of 50 ≦ x <60. However, the expansion rate T2 is associated with the divided area 60 ≦ x <80, and the expansion rate T1 is associated with the divided area 80 ≦ x ≦ 100. Note that the expansion rate T1 = 1 and the relationship of expansion rate T1 <T2 <T3 <T4 is established.
　一方、分割画像３０２と分割画像３０３に対応する伸張率情報としては、０≦ｘ＜２０の分割エリアに対しては伸張率Ｔ１が、２０≦ｘ＜４０の分割エリアに対しては伸張率Ｔ２が、４０≦ｘ＜５０の分割エリアに対しては伸張率Ｔ３が、５０≦ｘ≦１００の分割エリアに対しては伸張率Ｔ４が、それぞれ対応付けられている。なお、伸張率Ｔ１＝１であり、伸張率Ｔ１＜Ｔ２＜Ｔ３＜Ｔ４の関係が成立つ。 On the other hand, the expansion rate information corresponding to the divided image 302 and the divided image 303 includes an expansion rate T1 for a divided area of 0 ≦ x <20 and an expansion rate T2 for a divided area of 20 ≦ x <40. However, the expansion rate T3 is associated with the divided area of 40 ≦ x <50, and the expansion rate T4 is associated with the divided area of 50 ≦ x ≦ 100. Note that the expansion rate T1 = 1 and the relationship of expansion rate T1 <T2 <T3 <T4 is established.
　伸張制御部ｌ０６は、記憶部１０５を参照して、分割画像に応じて分割された映像信号と位置情報に基づき、各分割画像の画素の伸張率を決定して、映像信号における映像画素の伸張率と表示される表示画面の表示ＩＤを示す表示設定情報を信号処理部１０７に出力する。 The decompression control unit 1006 refers to the storage unit 105 to determine the pixel decompression rate of each divided image based on the video signal divided according to the divided image and the position information, and to decompress the video pixel in the video signal. The display setting information indicating the rate and the display ID of the displayed display screen is output to the signal processing unit 107.
　信号処理部１０７は、伸張制御部ｌ０６から入力する表示設定情報に基づき、入力部１０３から入力する映像信号を処理して、マルチ画面２００の位置に応じて映像画素の伸張率を変更した映像信号Ｓ１０´を表示部１０８に出力する。この信号処理部１０７は、例えば、表示設定情報に基づき、マルチ画面２００を構成する画面の数に応じて、映像信号Ｓ１０を、各表示装置２０１～２０４に対応する映像信号Ｓ１１～Ｓ１４に分割する。この信号処理部１０７は、表示設定情報に基づき、この映像信号Ｓ１１～Ｓ１４に含まれる映像画素の伸張率を変更した映像信号Ｓ１１´～Ｓ１４´を表示部１０８に出力する。つまり、信号処理部１０７は、映像信号Ｓ１１´～Ｓ１４´を、それぞれ、表示装置２０１～２０４に出力する。 The signal processing unit 107 processes the video signal input from the input unit 103 based on the display setting information input from the expansion control unit 1006, and changes the expansion rate of the video pixel according to the position of the multi-screen 200. S10 ′ is output to the display unit. For example, the signal processing unit 107 divides the video signal S10 into video signals S11 to S14 corresponding to the display devices 201 to 204 according to the number of screens constituting the multi-screen 200 based on the display setting information. . The signal processing unit 107 outputs the video signals S11 ′ to S14 ′ in which the expansion ratios of the video pixels included in the video signals S11 to S14 are changed to the display unit 108 based on the display setting information. That is, the signal processing unit 107 outputs the video signals S11 ′ to S14 ′ to the display devices 201 to 204, respectively.
　表示部１０８は、上述の通り表示装置２０１～２０４の総称であり、信号処理部１０７から入力する映像信号に基づく映像を表示する。
　本実施形態において、表示装置２０１～２０４は、映像信号Ｓ１１´～Ｓ１４´が入力され、この映像信号Ｓ１１´～Ｓ１４´に基づく画像を表示する。 The display unit 108 is a general term for the display devices 201 to 204 as described above, and displays video based on the video signal input from the signal processing unit 107.
In the present embodiment, the display devices 201 to 204 receive the video signals S11 ′ to S14 ′ and display images based on the video signals S11 ′ to S14 ′.
　次に、図７を参照して、本実施形態に係る多画面表示制御方法の一例について説明する。図７は、本実施形態に係る多画面表示制御方法の一例を示すフローチャートである。
（ステップＳＴ１）
　図７に示す通り、まず、多画面表示制御装置１００におけるマルチ画面設定が行われる。つまり、表示装置２０１～２０４が、順番に接続され、それぞれに表示ＩＤ１～４が割り当てられる。この表示ＩＤ１～４は、各表示装置２０１～２０４に内蔵される記憶部に記憶される。次いで、接続インターフェース１０１を介して、多画面表示制御装置１００と表示装置２０１～２０４がそれぞれ接続されると、各表示装置２０１～２０４から表示ＩＤ１～４を示す表示識別情報が制御部１０２に入力する。 Next, an example of the multi-screen display control method according to the present embodiment will be described with reference to FIG. FIG. 7 is a flowchart illustrating an example of the multi-screen display control method according to the present embodiment.
(Step ST1)
As shown in FIG. 7, first, multi-screen setting is performed in the multi-screen display control device 100. That is, the display devices 201 to 204 are connected in order, and the display IDs 1 to 4 are assigned to them. The display IDs 1 to 4 are stored in a storage unit built in each of the display devices 201 to 204. Next, when the multi-screen display control device 100 and the display devices 201 to 204 are connected via the connection interface 101, display identification information indicating the display IDs 1 to 4 is input from the display devices 201 to 204 to the control unit 102. To do.
（ステップＳＴ２）
　制御部１０２は、接続インターフェース１０１から入力する表示識別情報に基づき、マルチ画面２００を構成する表示装置２０１～２０４の数をカウントして、マルチ画面を構成する表示装置の数を示す画面数情報を取得し、表示識別情報とともに、信号分割部１０４に出力する。本実施形態において、制御部１０２は、画面数情報として、「４」を示す情報を取得し、信号分割部１０４に出力する。
　一方、入力部１０３は、映像信号Ｓ１０を入力して、信号分割部１０４と信号処理部１０７に出力する。 (Step ST2)
The control unit 102 counts the number of display devices 201 to 204 constituting the multi-screen 200 based on the display identification information input from the connection interface 101, and displays screen number information indicating the number of display devices constituting the multi-screen. Acquired and output to the signal dividing unit 104 together with the display identification information. In the present embodiment, the control unit 102 acquires information indicating “4” as the screen number information, and outputs the information to the signal dividing unit 104.
On the other hand, the input unit 103 receives the video signal S10 and outputs it to the signal dividing unit 104 and the signal processing unit 107.
　そして、信号分割部１０４は、入力する画面数情報が示す数に基づき、映像信号Ｓ１０が示す表示画像３００を、分割した画像の面積が等しくなるように分割する。本実施形態において、画面数情報は表示画面が４つであることを示すため、信号分割部１０４は、映像信号Ｓ１０が示す表示画像３００を面積が均等になるように４分割する。これにより、映像信号が示す表示画像３００は、分割画像３０１～３０４に分割される（図４Ｂ参照）。 Then, the signal dividing unit 104 divides the display image 300 indicated by the video signal S10 based on the number indicated by the input screen number information so that the areas of the divided images are equal. In the present embodiment, since the screen number information indicates that there are four display screens, the signal dividing unit 104 divides the display image 300 indicated by the video signal S10 into four so that the areas are equal. Thus, the display image 300 indicated by the video signal is divided into divided images 301 to 304 (see FIG. 4B).
　ここで、信号分割部１０４は、各分割画像３０１～３０４を構成する映像画素を特定する映像画素情報を取得し、それぞれ対応する表示ＩＤ１～４に対応付ける。つまり、信号分割部１０４は、分割画像３０１を構成する映像画素を特定する映像画素情報として、４つ頂点の映像画素の座標｛Ｐ５１（０，Ｑ）、Ｐ５２（Ｐ／２－１，Ｑ）、Ｐ５３（Ｐ／２－１，Ｑ／２＋１）、Ｐ５４（０，Ｑ／２＋１）｝を示す情報を取得し、この映像画素情報に表示ＩＤ１を対応付けた情報を伸張制御部ｌ０６に出力する。
　同様にして、信号分割部１０４は、分割画像３０２を構成する映像画素を特定する映像画素情報として、４つ頂点の映像画素の座標｛Ｐ６１（Ｐ／２＋１，Ｑ）、Ｐ６２（Ｐ，Ｑ）、Ｐ６３（Ｐ，Ｑ／２＋１）、Ｐ６４（Ｐ／２＋１，Ｑ／２＋１）｝を示す情報を取得し、この映像画素情報に表示ＩＤ２を対応付けた情報を伸張制御部ｌ０６に出力する。信号分割部１０４は、分割画像３０３を構成する映像画素を特定する映像画素情報として、４つ頂点の映像画素の座標｛Ｐ７１（Ｐ／２＋１，Ｑ／２－１）、Ｐ７２（Ｐ，Ｑ／２－１）、Ｐ７３（Ｐ，０）、Ｐ７４（Ｐ／２＋１，０）｝を示す情報を取得し、この映像画素情報に表示ＩＤ３を対応付けた情報を伸張制御部ｌ０６に出力する。信号分割部１０３は、分割画像３０４を構成する映像画素を特定する映像画素情報として、４つ頂点の映像画素の座標｛Ｐ８１（０，Ｑ／２－１）、Ｐ８２（Ｐ／２－１，Ｑ／２－１）、Ｐ８３（Ｐ／２－１，０）、Ｐ８４（０，０）｝を示す情報を取得し、この映像画素情報に表示ＩＤ４を対応付けた情報を伸張制御部ｌ０６に出力する。 Here, the signal dividing unit 104 acquires video pixel information for specifying video pixels constituting each of the divided images 301 to 304, and associates them with the corresponding display IDs 1 to 4, respectively. That is, the signal dividing unit 104 uses the coordinates {P51 (0, Q), P52 (P / 2-1, Q) of the video pixels at the four vertices as the video pixel information for specifying the video pixels constituting the divided image 301. , P53 (P / 2-1, Q / 2 + 1), P54 (0, Q / 2 + 1)} are acquired, and information in which the display ID 1 is associated with this video pixel information is output to the expansion control unit 106. .
Similarly, the signal dividing unit 104 uses the coordinates of the video pixels at the four vertices {P61 (P / 2 + 1, Q), P62 (P, Q) as video pixel information for specifying the video pixels constituting the divided image 302. , P63 (P, Q / 2 + 1), P64 (P / 2 + 1, Q / 2 + 1)} is acquired, and information in which the display ID 2 is associated with the video pixel information is output to the expansion control unit 106. The signal dividing unit 104 uses the coordinates of the video pixels at four vertices {P71 (P / 2 + 1, Q / 2-1), P72 (P, Q / 2-1), P73 (P, 0), P74 (P / 2 + 1, 0)} are acquired, and information in which the display ID 3 is associated with this video pixel information is output to the expansion control unit l06. The signal dividing unit 103 uses the coordinates of the video pixels at the four vertices {P81 (0, Q / 2-1), P82 (P / 2-1, 1) as video pixel information for specifying the video pixels constituting the divided image 304. Q / 2-1), P83 (P / 2-1, 0), P84 (0, 0)} is acquired, and information in which the display ID 4 is associated with this video pixel information is sent to the expansion control unit 1006. Output.
　次いで、信号分割部１０４は、画面数情報ごとに、表示識別情報に対応付けられた位置情報を示す位置情報テーブルを参照して、制御部１０２から入力する画面数情報と表示識別情報に基づき、マルチ画面２００内における各表示画面２１１～２１４の位置、つまり、表示画像３００内における分割画像３０１～３０４の位置を示す位置情報を取得する。
　本実施形態において、信号分割部１０４は、位置情報テーブルを参照して、表示識別情報の表示ＩＤ１～４と対応付けられている分割画像３０１～３０４に対し、それぞれ、位置情報として、左上画面であることを示す情報、右上画面であることを示す情報、右下画面であることを示す情報、左下画面であることを示す情報を対応付けた情報を得る。そして、信号分割部１０４は、左上画面であることを示す位置情報に表示ＩＤ１を対応付けた情報、右上画面であることを示す位置情報に表示ＩＤ２を対応付けた情報、右下画面であることを示す位置情報に表示ＩＤ３を対応付けた情報、左下画面であることを示す位置情報に表示ＩＤ４を対応付けた情報を、それぞれ、伸張制御部ｌ０６に出力する。 Next, the signal dividing unit 104 refers to the position information table indicating the position information associated with the display identification information for each screen number information, and based on the screen number information and the display identification information input from the control unit 102, Position information indicating the positions of the display screens 211 to 214 in the multi-screen 200, that is, the positions of the divided images 301 to 304 in the display image 300 is acquired.
In the present embodiment, the signal dividing unit 104 refers to the position information table, and the divided images 301 to 304 associated with the display IDs 1 to 4 of the display identification information are respectively displayed as position information on the upper left screen. Information indicating that there is information, information indicating that it is the upper right screen, information indicating that it is the lower right screen, and information indicating that it is the lower left screen is obtained. The signal dividing unit 104 is information that associates display ID1 with position information that indicates the upper left screen, information that associates display ID2 with position information that indicates the upper right screen, and is the lower right screen. The information in which the display ID 3 is associated with the position information indicating, and the information in which the display ID 4 is associated with the position information indicating the lower left screen are output to the decompression control unit 106.
（ステップＳＴ３）
　伸張制御部ｌ０６は、記憶部１０５を参照して、表示ＩＤ１～４が対応付けられた位置情報に基づき、各分割画像３０１～３０４を構成する映像画素の伸張率を決定する。つまり、伸張制御部ｌ０６は、マルチ画面２００内における位置に応じて予め決められている各分割画像３０１～３０４における伸張率の変化の分布を示す伸張率情報に基づき、各分割画像３０１～３０４の分割エリア毎の伸張率Ｔ１～Ｔ４を決定する。
　そして、伸張制御部ｌ０６は、表示ＩＤ１～４が対応付けられた位置情報に基づき、各分割画像３０１～３０４の分割エリア毎に、各映像画素の伸張率Ｔ１～Ｔ４を決定し、各映像画素Ｔ１～４に伸張率を対応付けた表示設定情報を信号処理部１０７に出力する。 (Step ST3)
The expansion control unit 1006 refers to the storage unit 105 and determines the expansion rate of the video pixels constituting each of the divided images 301 to 304 based on the position information associated with the display IDs 1 to 4. In other words, the expansion control unit 1006 uses the expansion rate information indicating the distribution of the change in the expansion rate in each of the divided images 301 to 304 that is determined in advance according to the position in the multi-screen 200, for each of the divided images 301 to 304. The expansion ratios T1 to T4 for each divided area are determined.
Then, the expansion control unit 1006 determines the expansion rate T1 to T4 of each video pixel for each divided area of each divided image 301 to 304 based on the position information associated with the display IDs 1 to 4, and each video pixel. Display setting information in which the expansion rate is associated with T1 to T4 is output to the signal processing unit 107.
（ステップＳＴ４）
　信号処理部１０７は、伸張制御部ｌ０６から入力する表示設定情報に基づき、入力部１０３から入力する映像信号を処理して、マルチ画面２００の位置に応じて映像画素の伸張率を変更した映像信号Ｓ１０´を表示部１０８に出力する。
　つまり、信号処理部１０７は、例えば、表示設定情報に基づき、マルチ画面２００を構成する画面の数に応じて、各表示装置２０１～２０４に対応する映像信号Ｓ１１～Ｓ１４に映像信号Ｓ１０を分割する。この信号処理部１０７は、表示設定情報に基づき、この映像信号Ｓ１１～Ｓ１４に含まれる映像画素の伸張率を決定し、決定された伸張率の映像信号Ｓ１１´～Ｓ１４´を表示部１０８に出力する。つまり、信号処理部１０７は、映像信号Ｓ１１´～Ｓ１４´を、表示ＩＤに基づき、それぞれ、表示装置２０１～２０４に出力する。 (Step ST4)
The signal processing unit 107 processes the video signal input from the input unit 103 based on the display setting information input from the expansion control unit 1006, and changes the expansion rate of the video pixel according to the position of the multi-screen 200. S10 ′ is output to the display unit.
That is, for example, the signal processing unit 107 divides the video signal S10 into video signals S11 to S14 corresponding to the display devices 201 to 204 according to the number of screens constituting the multi-screen 200 based on the display setting information. . The signal processing unit 107 determines the expansion rate of the video pixels included in the video signals S11 to S14 based on the display setting information, and outputs the video signals S11 ′ to S14 ′ having the determined expansion rate to the display unit 108. To do. That is, the signal processing unit 107 outputs the video signals S11 ′ to S14 ′ to the display devices 201 to 204, respectively, based on the display ID.
（ステップＳＴ５）
　表示装置２０１～２０４は、映像信号Ｓ１１´～Ｓ１４´が入力され、この映像信号Ｓ１１´～Ｓ１４´に基づく画像を表示する。 (Step ST5)
The display devices 201 to 204 receive the video signals S11 ′ to S14 ′ and display images based on the video signals S11 ′ to S14 ′.
　これにより、マルチ画面２００のアスペクト比と表示画像３００のアスペクト比が異なる場合であっても、表示画像３００の中央部分の伸張率を「１」とすることができるため、中央部分の表示倍率を一定にすることができる。また、表示画像３００の両端部分の画像を引き伸ばして表示することにより、表示画像３００をマルチ画面２００のサイズに合わせて表示することができる。 As a result, even when the aspect ratio of the multi-screen 200 and the aspect ratio of the display image 300 are different, the expansion ratio of the central portion of the display image 300 can be set to “1”. Can be constant. Further, the display image 300 can be displayed according to the size of the multi-screen 200 by enlarging and displaying the images at both ends of the display image 300.
　ここで、図８、９を参照して、本発明によらない場合を例に、本発明の効果について説明する。図８、９は、本発明によらない表示制御装置によってマルチ画面に表示された表示画像と、本発明に係る多画面表示制御装置１００によってマルチ画面に表示された表示画像との比較を示す図である。 Here, the effects of the present invention will be described with reference to FIGS. 8 and 9, taking as an example a case not according to the present invention. 8 and 9 are diagrams showing a comparison between a display image displayed on a multi-screen by a display control device not according to the present invention and a display image displayed on a multi-screen by the multi-screen display control device 100 according to the present invention. It is.
　図８に示す通り、本発明によらない表示制御装置によって、映像画素の伸張率＝１で画像をマルチ画面に表示した場合、黒い無表示部分が形成されてしまう（図８の画像８０１参照）。また、映像画素の伸張率を均一に１以上にした場合、表示画像がのびてしまい、正確な画像が表示されないおそれがある（図８の画像８０２参照）。 As shown in FIG. 8, when an image is displayed on a multi-screen with a video pixel expansion rate = 1 by a display control device not according to the present invention, a black non-display portion is formed (see image 801 in FIG. 8). . Further, when the expansion ratio of the video pixels is uniformly set to 1 or more, the display image may be stretched and an accurate image may not be displayed (see image 802 in FIG. 8).
　また、図９に示す通り、本発明によらない表示制御装置によって、各表示装置９０１～９０４の中央において伸張率＝「１」とし、各表示装置９０１～９０４の両端部に向かって伸張率を増大させた場合、マルチ画面の中央部分において画像がのびてしまう。このため、マルチ画面の中央部分の画像を、正確に表示できない。 Further, as shown in FIG. 9, the display control device not according to the present invention sets the expansion rate to “1” at the center of each of the display devices 901 to 904, and sets the expansion rate toward both ends of each of the display devices 901 to 904. When it is increased, the image extends in the central portion of the multi-screen. For this reason, the image of the central portion of the multi-screen cannot be displayed accurately.
　これに比べて、本実施形態に係る多画面表示制御装置１００によれば、表示画像３００の両端部分の画像を引き伸ばして表示することにより、表示画像３００をマルチ画面２００のサイズに合わせて表示することができるとともに、中央部分に表示されている画像を正確に表示することができる。 In contrast, according to the multi-screen display control apparatus 100 according to the present embodiment, the display image 300 is displayed in accordance with the size of the multi-screen 200 by expanding and displaying the images at both ends of the display image 300. In addition, the image displayed in the central portion can be displayed accurately.
　また、上述の多画面表示制御装置１００の各構成における動作の過程は、コンピュータに実行させるためのプログラムや、このプログラムとしてコンピュータ読み取り可能な記録媒体として利用可能であり、コンピュータシステムが読み出して実行することによって、上記処理が行われる。なお、ここでいう「コンピュータシステム」とは、ＣＰＵ及び各種メモリやＯＳ、周辺機器等のハードウェアを含むものである。
　また、「コンピュータシステム」は、ＷＷＷシステムを利用している場合であれば、ホームページ提供環境（あるいは表示環境）も含むものとする。
　また、「コンピュータ読み取り可能な記録媒体」とは、フレキシブルディスク、光磁気ディスク、ＲＯＭ、フラッシュメモリー等の書き込み可能な不揮発性メモリ、ＣＤ－ＲＯＭ等の可搬媒体、コンピュータシステムに内蔵されるハードディスク等の記憶装置のことをいう。 The operation process in each configuration of the multi-screen display control apparatus 100 described above can be used as a program to be executed by a computer or a computer-readable recording medium as the program, and is read and executed by the computer system. Thus, the above process is performed. The “computer system” here includes a CPU, various memories, an OS, and hardware such as peripheral devices.
Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.
　さらに「コンピュータ読み取り可能な記録媒体」とは、インターネット等のネットワークや電話回線等の通信回線を介してプログラムが送信された場合のサーバやクライアントとなるコンピュータシステム内部の揮発性メモリ（例えばＤＲＡＭ（Ｄｙｎａｍｉｃ　Ｒａｎｄａｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ））のように、一定時間プログラムを保持しているものも含むものとする。
　また、上記プログラムは、このプログラムを記憶装置等に記憶したコンピュータシステムから、伝送媒体を介して、あるいは、伝送媒体中の伝送波により他のコンピュータシステムに伝送されてもよい。ここで、プログラムを伝送する「伝送媒体」は、インターネット等のネットワーク（通信網）や電話回線等の通信回線（通信線）のように情報を伝送する機能を有する媒体のことをいう。
　また、上記プログラムは、前述した機能の一部を実現するためのものであっても良い。さらに、前述した機能をコンピュータシステムに既に記録されているプログラムとの組合せで実現できるもの、いわゆる差分ファイル（差分プログラム）であっても良い。 Further, the “computer-readable recording medium” refers to a volatile memory (for example, DRAM (Dynamic) in a computer system serving as a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. Randam Access Memory)) that holds a program for a certain period of time is also included.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.
　１００・・・多画面表示制御装置、１０１・・・接続インターフェース部、１０２・・・制御部、１０３・・・入力部、１０４・・・信号分割部、１０５・・・記憶部、１０６・・・伸張制御部、１０７・・・信号処理部、２００・・・マルチ画面、２０１～２０４・・・表示装置、２１１～２１４・・・表示画面、３００・・・表示画像、３０１～３０４・・・分割画像 DESCRIPTION OF SYMBOLS 100 ... Multi-screen display control apparatus, 101 ... Connection interface part, 102 ... Control part, 103 ... Input part, 104 ... Signal division part, 105 ... Memory | storage part, 106 ... Decompression control unit 107... Signal processing unit 200... Multi screen 201 to 204... Display device 211 to 214 Display screen 300 Display image 301 to 304・ Split image

Claims (3)

  1. 　複数の表示装置の複数の表示画面により構成されるマルチ画面に表示させる表示画像を示す映像信号を入力する入力部と、
    　前記マルチ画面内における位置に応じて予め決められている各画素の伸張率を示す情報であって、前記マルチ画面内における端部分の画素の第１伸張率を１以上と規定するとともに、前記マルチ画面内における中央部分の画素の第２伸張率を前記第１の伸張率よりも小さい一定値と規定する伸張率情報を記憶する記憶部と、
    　前記記憶部を参照して、前記表示画面の数に応じて前記表示画像が分割された分割画像に対して、前記マルチ画面内における当該分割画像の位置に対応する前記伸張率を求め、当該伸張率に基づき前記表示画像を前記表示装置に表示させる表示制御部と
    　を備えることを特徴とする多画面表示制御装置。     An input unit for inputting a video signal indicating a display image to be displayed on a multi-screen configured by a plurality of display screens of a plurality of display devices;
    Information indicating an expansion rate of each pixel determined in advance according to a position in the multi-screen, wherein a first expansion rate of pixels at an end portion in the multi-screen is defined as 1 or more, and the multi A storage unit that stores expansion rate information that defines a second expansion rate of a pixel at a central portion in the screen as a constant value smaller than the first expansion rate;
    Referring to the storage unit, for the divided image obtained by dividing the display image according to the number of the display screens, the expansion rate corresponding to the position of the divided image in the multi-screen is obtained, and the expansion is performed. A multi-screen display control device comprising: a display control unit configured to display the display image on the display device based on a rate.
  2. 　複数の表示装置の複数の表示画面により構成されるマルチ画面に表示させる表示画像を示す映像信号を入力するステップと、
    　前記マルチ画面内における位置に応じて予め決められている各画素の伸張率を示す情報であって、前記マルチ画面内における端部分の画素の第１伸張率を１以上と規定するとともに、前記マルチ画面内における中央部分の画素の第２伸張率を前記第１の伸張率よりも小さい一定値と規定する伸張率情報を記憶するステップと、
    　前記記憶部を参照して、前記表示画面の数に応じて前記表示画像が分割された分割画像に対して、前記マルチ画面内における当該分割画像の位置に対応する前記伸張率を求め、当該伸張率に基づき前記表示画像を前記表示装置に表示させるステップと
    　を備えることを特徴とする多画面表示制御方法。     Inputting a video signal indicating a display image to be displayed on a multi-screen composed of a plurality of display screens of a plurality of display devices;
    Information indicating an expansion rate of each pixel determined in advance according to a position in the multi-screen, wherein a first expansion rate of pixels at an end portion in the multi-screen is defined as 1 or more, and the multi Storing expansion rate information defining a second expansion rate of a central pixel in the screen as a constant value smaller than the first expansion rate;
    Referring to the storage unit, for the divided image obtained by dividing the display image according to the number of the display screens, the expansion rate corresponding to the position of the divided image in the multi-screen is obtained, and the expansion is performed. And a step of displaying the display image on the display device based on a rate.
  3. 　コンピュータを、
    　複数の表示装置の複数の表示画面により構成されるマルチ画面に表示させる表示画像を示す映像信号を入力する入力部手段、
    　前記マルチ画面内における位置に応じて予め決められている各画素の伸張率を示す情報であって、前記マルチ画面内における端部分の画素の第１伸張率を１以上と規定するとともに、前記マルチ画面内における中央部分の画素の第２伸張率を前記第１の伸張率よりも小さい一定値と規定する伸張率情報を記憶する記憶手段、
    　前記記憶部を参照して、前記表示画面の数に応じて前記表示画像が分割された分割画像に対して、前記マルチ画面内における当該分割画像の位置に対応する前記伸張率を求め、当該伸張率に基づき前記表示画像を前記表示装置に表示させる表示制御手段
    　として機能させるための多画面表示制御プログラム。     Computer
    Input unit for inputting a video signal indicating a display image to be displayed on a multi-screen composed of a plurality of display screens of a plurality of display devices;
    Information indicating an expansion rate of each pixel determined in advance according to a position in the multi-screen, wherein a first expansion rate of pixels at an end portion in the multi-screen is defined as 1 or more, and the multi Storage means for storing expansion rate information defining a second expansion rate of a central pixel in the screen as a constant value smaller than the first expansion rate;
    Referring to the storage unit, for the divided image obtained by dividing the display image according to the number of the display screens, the expansion rate corresponding to the position of the divided image in the multi-screen is obtained, and the expansion is performed. A multi-screen display control program for functioning as display control means for displaying the display image on the display device based on a rate.
PCT/JP2010/072544 2010-12-15 2010-12-15 Multi screen display control device, multi screen display control method, and multi screen display control program WO2012081091A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002112061A (en) * 2000-09-27 2002-04-12 Toshiba Corp Television receiver
JP2002258808A (en) * 2001-03-02 2002-09-11 Matsushita Electric Ind Co Ltd Liquid crystal display
JP2006042134A (en) * 2004-07-29 2006-02-09 Sony Corp Information processor, information processing method, program, and recording medium
JP2007164060A (en) * 2005-12-16 2007-06-28 Sharp Corp Multi-screen display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002112061A (en) * 2000-09-27 2002-04-12 Toshiba Corp Television receiver
JP2002258808A (en) * 2001-03-02 2002-09-11 Matsushita Electric Ind Co Ltd Liquid crystal display
JP2006042134A (en) * 2004-07-29 2006-02-09 Sony Corp Information processor, information processing method, program, and recording medium
JP2007164060A (en) * 2005-12-16 2007-06-28 Sharp Corp Multi-screen display device

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