WO2019044232A1 - Image signal supply device, display system, image signal supply method, control program, and recording medium - Google Patents

Image signal supply device, display system, image signal supply method, control program, and recording medium Download PDF

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Publication number
WO2019044232A1
WO2019044232A1 PCT/JP2018/026950 JP2018026950W WO2019044232A1 WO 2019044232 A1 WO2019044232 A1 WO 2019044232A1 JP 2018026950 W JP2018026950 W JP 2018026950W WO 2019044232 A1 WO2019044232 A1 WO 2019044232A1
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Prior art keywords
image signal
cable
cables
signal supply
video
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PCT/JP2018/026950
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French (fr)
Japanese (ja)
Inventor
神田　貴史
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シャープ株式会社
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Publication of WO2019044232A1 publication Critical patent/WO2019044232A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • 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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/4425—Monitoring of client processing errors or hardware failure

Definitions

  • the present invention relates to an image signal supply device, a display system, an image signal supply method, a control program, and a recording medium.
  • Patent Document 1 a plurality of video signal transmission paths are provided, and when one of the video signal transmission paths is interrupted, a normal video is displayed using only the signals related to the remaining video signal transmission paths. A method is disclosed.
  • Patent Document 1 is an invention that converts a combination of left and right images and frames relating to a stereoscopic video. Therefore, even if the method disclosed in Patent Document 1 is used, the above problem is not solved.
  • One aspect of the present invention has been made in view of the above problems, and in the case of supplying an image signal related to each of a plurality of partial areas constituting a display area of a display screen using a plurality of cables, connection state It is an object of the present invention to realize an image signal supply device that prevents the occurrence of a missing image when there is a cable that does not exist in the above.
  • an image signal supply device concerning one mode of the present invention uses a plurality of cables to a display device, and each of a plurality of partial fields which constitute a display field of the display screen concerned.
  • a cable state detection unit for detecting whether or not each of the plurality of cables is connected, and the cable state detection unit is at least one of the plurality of cables when supplying an image (video) signal relating to
  • An image signal supply unit for supplying an image signal to be displayed over the entire display area with respect to the cables other than the cables not in the connection state among the plurality of cables when it is detected that Prepare.
  • FIG. 1 is a functional block diagram showing a display system 1 according to Embodiment 1.
  • 5 is a flowchart showing the flow of processing according to the first embodiment. It is a figure which shows the example which displays 8K imaging
  • FIG. 7 is a functional block diagram showing a display system 1a according to a first modification of the first embodiment. 7 is a flowchart showing the flow of processing according to the second embodiment. It is a figure which shows the example which displays 4 K imaging
  • HDMI standard assumed to be mainly used in the present invention will be supplemented.
  • HDMI High-Definition Multimedia Interface
  • HPD Hot Plug Detect
  • Embodiment 1 Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 5.
  • any one of the 4K video signals is not properly transmitted.
  • a process of up-converting another 4K image and displaying it on the display unit in this case will be described.
  • FIG. 1 is a functional block diagram showing a display system 1 according to the present embodiment.
  • the display system 1 includes an image signal supply device 2 and a television receiver 3.
  • the image signal supply device 2 includes the HDMI 2.0 transmission ports 10A to 10D, a control unit 20, and a storage unit 30.
  • the control unit 20 includes a cable state detection unit 21 and an image signal supply unit 22.
  • the television receiver 3 includes a tuner 4 and a display device 5.
  • the display device 5 includes the HDMI 2.0 reception ports 11A to 11D, a control unit 40, a video processing unit 50, a storage unit 60, and a display unit 70.
  • the HDMI 2.0 transmission ports 10A to 10D are each capable of outputting a 3840 ⁇ 2160 resolution called 4K video via an HDMI 2.0 compatible cable.
  • the HDMI 2.0 transmission ports 10A to 10D included in the image signal supply device 2 and the HDMI 2.0 reception ports 11A to 11D included in the display device 5 are respectively connected by an HDMI (2.0 compatible) cable.
  • the control unit 20 is a control circuit that controls the entire image signal supply device 2, and also functions as the cable state detection unit 21 and the image signal supply unit 22.
  • the cable state detection unit 21 detects whether or not the connection state can be appropriately communicated with the display device 5 by each HDMI cable connected to the HDMI 2.0 transmission ports 10A to 10D, using the HPD function of the HDMI described above Do.
  • the image signal supply unit 22 transmits video signals to the HDMI 2.0 transmission ports 10A to 10D.
  • the storage unit 30 holds various data and the like. It is assumed that each 4K video data forming the 8K video is initially stored in the storage unit 30.
  • the image signal conversion unit 31 generates a 4K video having the same content as the 8K video.
  • the control unit 40 is a control circuit that controls the entire display device 5.
  • the image processing unit 50 is a control circuit that integrates four 4K images input to the HDMI 2.0 reception ports 11A to 11D included in the display device 5 into one 8K image, and also functions as an image converter Do.
  • the control unit 40 may function as the video processing unit 50.
  • the storage unit 60 holds various video data and the like.
  • the display unit 70 is a display panel that displays a moving image, and has a resolution of 7680 ⁇ 4320 that reproduces an 8K image.
  • FIG. 2 is a flowchart showing the flow of processing according to the present embodiment.
  • S101 the above-described HPD function is used to determine whether the cable status detection unit 21 can appropriately transmit data from the HDMI 2.0 transmission ports 10A to 10D to the corresponding HDMI 2.0 reception ports 11A to 11D. Use the judgment.
  • step S102 If the data can be properly transmitted, the process proceeds to step S102. If the data can not be properly transmitted between at least one of the ports due to disconnection of the cable connecting the ports, the process proceeds to step S103. (S102)
  • the image signal supply unit 22 causes the HDMI 2.0 transmission ports 10A to 10D to transmit signals related to each 4K image forming the 8K image stored in the storage unit 30.
  • the HDMI 2.0 reception ports 11A to 11D respectively receive the 4K video signal.
  • the control unit 40 stores data related to the 4K video signal in the storage unit 60.
  • the image processing unit 50 integrates the four 4K images into one 8K image.
  • FIG. 3 is a diagram showing an example of displaying the 8K video on the display unit 70. As shown in FIG. 3
  • the control unit 40 refers to the data stored in the storage unit 60 and causes the display unit 70 to display the 8K video as shown in FIG. 3.
  • the cable status detection unit 21 monitors the HDMI 2.0 transmission ports 10A to 10D at predetermined unit time intervals.
  • the image signal conversion unit 31 refers to the 8K video (each 4K video that is a partial video constituting the above) stored in the storage unit 30 and stores the 4K video having the same content as the 8K video on the storage unit 30.
  • the generated 4K video is stored in the storage unit 30.
  • the 8K video signal is converted into a 4K video signal to be displayed over the entire display area of the display unit 70 using only a cable other than the cable which is not in the connected state.
  • the image signal conversion unit 31 when the image signal conversion unit 31 generates an image signal to be displayed in the entire display area by using only a cable other than the cable which is not in the connection state with reference to the image signal regarding each of the plurality of partial areas. It may be expressed.
  • the storage unit 30 initially holds data related to 4K video having the same content as the 8K video, the data may naturally be used for the subsequent processing.
  • the image signal supply unit 22 can properly communicate the 4K image signal having the same content as the 8K image stored in the storage unit 30 as an image signal to be displayed on the entire display area of the display unit 70.
  • Transmission ports 10A to 10D are supplied from any port (cable) to stop transmission of the video signal from other than the above ports.
  • the port automatically selects, for example, a port with a lower number.
  • the HDMI 2.0 reception port (11A, 11B, 11C or 11D) corresponding to the above HDMI 2.0 transmission port (10A, 10B, 10C or 10D) receives the 4K video signal.
  • the control unit 40 stores data related to the 4K video signal in the storage unit 60.
  • the video processing unit 50 up-converts the 4K video signal into a size that allows the entire display area of the display unit 70 to be reproduced.
  • FIG. 4 is a diagram showing an example in which the 4K video is displayed on the entire display area of the display unit 70. As shown in FIG. Further, FIG. 4 shows that the HDMI cable related to transmission of the video signal related to the partial video B is disconnected. The control unit 40 causes the display unit 70 to display the 4K video as shown in FIG.
  • FIG. 5 is a diagram showing video reproduction in which a part of the display area is missing.
  • FIG. 6 is a functional block diagram showing a display system 1a according to the present modification.
  • the image signal supply device 2a includes a plurality of video transmission ports 12A and 12B, etc., instead of the HDMI 2.0 transmission ports 10A to 10D included in the image signal supply device 2 shown in FIG.
  • the display device 5a includes a plurality of video reception ports 13A and 13B, etc., instead of the HDMI 2.0 reception ports 11A to 11D included in the display device 5.
  • the cable connecting between the ports is a standard cable conforming to the port.
  • the display unit 70a included in the display device 5a is not limited to the resolution of 7680 ⁇ 4320 for reproducing 8K video.
  • the resolution of the display unit 70a is equal to the resolution of the display area constituted by all the partial video signals of the resolution that can be transmitted from the video transmission port.
  • the storage unit 30 stores partial video data constituting an entire video having the same resolution as the display area of the display unit 70a.
  • the image signal conversion unit 31 refers to each of the partial video data stored in the storage unit 30 and that constitutes the entire video equal to the resolution of the display area of the display unit 70a.
  • Video data of the same content as the entire video equal to the resolution of the display area 70a, and video data of a resolution that can be transmitted from any one of the video transmission port 12A or 12B, etc. are stored in the storage unit 30.
  • the storage unit 30 is video data of the same content as the whole video equal to the resolution of the display area of the display unit 70a from the beginning, and has a resolution that can be transmitted from any one of the video transmission port 12A or 12B. When the video data is held, the data may of course be used for the subsequent processing.
  • the video signal supply unit 22 transmits each partial video stored in the storage unit 30 from the video transmission ports 12A and 12B and the like, and the control unit 40 stores the video data in the storage unit 60.
  • the video processing unit 50 integrates the video data into a video having a resolution equal to the resolution of the display unit 70a.
  • the control unit 40 refers to the data relating to the video stored in the storage unit 60, and causes the display unit 70a to display the video.
  • the image signal supply unit 22 displays the display unit.
  • a video signal having the same content as the video is transmitted from any port (cable) of any of the video transmission ports 12A and 12B etc. which can be appropriately communicated, and transmission of the video signal from other than the above port is performed. Stop it.
  • the port automatically selects, for example, a port with a lower number.
  • the video reception port 13A or 13B or the like corresponding to the above video transmission port 12A or 12B or the like receives the video signal.
  • the control unit 40 stores data related to the video signal in the storage unit 60.
  • the video processing unit 50 up-converts the video signal into a size that can be reproduced over the entire display area of the display unit 70a.
  • the control unit 40 refers to the data stored in the storage unit 60, and causes the display unit 70a to display the above video.
  • the port (cable) through which the image signal supply unit 22 transmits a 4K video signal having the same content as the 8K video stored in the storage unit 30 is a port set by the user in advance. Good.
  • step S103 of the first embodiment the port (cable) to which the image signal supply unit 22 transmits the 4K video signal having the same content as the 8K video stored in the storage unit 30 is also all ports in the connected state. Good.
  • FIG. 7 is a flow chart showing the flow of processing according to this embodiment.
  • S101 the above-described HPD function is used to determine whether the cable status detection unit 21 can appropriately transmit data from the HDMI 2.0 transmission ports 10A to 10D to the corresponding HDMI 2.0 reception ports 11A to 11D. Use the judgment.
  • step S102 If the data can be properly transmitted, the process proceeds to step S102. If the data can not be properly transmitted between at least any of the ports due to disconnection of the cable connecting the ports, the process proceeds to step S103 '. (S102)
  • the image signal supply unit 22 causes the HDMI 2.0 transmission ports 10A to 10D to transmit the 4K image signals (data) that make up the 8K image stored in the storage unit 30, respectively.
  • the HDMI 2.0 reception ports 11A to 11D respectively receive the 4K video signal.
  • the control unit 40 stores the 4K video signal in the storage unit 60.
  • the image processing unit 50 integrates the four 4K images into one 8K image.
  • FIG. 3 is a view showing an example of displaying the 4K video on the display unit 70. As shown in FIG. 3
  • the control unit 40 causes the display unit 70 to display the 8K video as shown in FIG. 3 with reference to the data related to the 8K video stored in the storage unit 60.
  • the cable status detection unit 21 monitors the HDMI 2.0 transmission ports 10A to 10D at predetermined unit time intervals.
  • the image signal conversion unit 31 refers to the 8K video (each 4K video that is a partial video constituting the above) stored in the storage unit 30 and stores the 4K video having the same content as the 8K video on the storage unit 30.
  • the generated 4K video is stored in the storage unit 30.
  • the 8K video signal is converted into a 4K video signal to be displayed over the entire display area of the display unit 70 using only a cable other than the cable which is not in the connected state.
  • the image signal conversion unit 31 when the image signal conversion unit 31 generates an image signal to be displayed in the entire display area by using only a cable other than the cable which is not in the connection state with reference to the image signal regarding each of the plurality of partial areas. It may be expressed.
  • the storage unit 30 initially holds data related to 4K video having the same content as the 8K video, the data may naturally be used for the subsequent processing.
  • the image signal supply unit 22 can not appropriately transmit the 4K image signal having the same content as the 8K image stored in the storage unit 30 and the data as an image signal to be displayed on the entire display area of the display unit 70.
  • a notification for display concerning ports in a state is supplied from any port (cable) of the HDMI 2.0 transmission ports 10A to 10D.
  • the port automatically selects, for example, a port with a lower number.
  • the HDMI 2.0 reception port (11A, 11B, 11C or 11D) corresponding to the HDMI 2.0 transmission port (10A, 10B, 10C or 10D) receives the 4K video signal and the notification for display.
  • the control unit 40 stores data related to the 4K video signal and the notification for display in the storage unit 60.
  • the video processing unit 50 up-converts the 4K video into a size that allows the entire display area of the display unit 70 to be reproduced.
  • FIG. 8 is a view showing an example of displaying the 4K video and the warning of the cable state on the display unit 70. As shown in FIG.
  • the control unit 40 refers to the data relating to the 4K video stored in the storage unit 60, and causes the display unit 70 to display the 4K video as shown in FIG.
  • the control unit 40 also causes the display unit 70 to superimpose the 4K video image for a predetermined period of time on the fact that communication is not properly performed between the ports.
  • step S104 branching is performed depending on whether or not the disconnected cable has been re-connected (or the broken cable has been replaced) in step S103.
  • step S101 When the cable is re-inserted, the process proceeds to step S101, and when the cable is not re-inserted, the process proceeds to step S103 ′.
  • the same effect as that of the first embodiment can be obtained, and the user can easily confirm that the 4K video is displayed on the display screen instead of the 8K video, so that the convenience of the user can be improved. Play a contributing effect.
  • control block in particular, the cable state detection unit 21 and the image signal supply unit 22 of the image signal supply device (2 or 2a) may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like. It may be realized by software.
  • the image signal supply device (2 or 2a) includes a computer that executes instructions of a program that is software that implements each function.
  • the computer includes, for example, at least one processor (control device) and at least one computer readable storage medium storing the program. Then, in the computer, the processor reads the program from the recording medium and executes the program to achieve the object of the present invention.
  • a CPU Central Processing Unit
  • the processor reads the program from the recording medium and executes the program to achieve the object of the present invention.
  • a CPU Central Processing Unit
  • the processor can be used as the processor.
  • a recording medium a tape, a disk, a card, a semiconductor memory, a programmable logic circuit or the like can be used besides “a non-temporary tangible medium”, for example, a ROM (Read Only Memory).
  • a RAM Random Access Memory
  • the program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program.
  • any transmission medium communication network, broadcast wave, etc.
  • one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.
  • the image signal supply device (2 or 2a) configures a display area of the display unit (70 or 70a) using a plurality of cables with respect to the display unit (70 or 70a)
  • a cable state detection unit (21) for supplying an image signal concerning each of a plurality of partial areas, and detecting whether or not each of the plurality of cables is in a connection state;
  • the cable state detection unit 21 detects that at least one of the plurality of cables is not in the connection state, the entire display area is obtained with respect to cables other than the cables in the connection state among the plurality of cables.
  • an image signal supply unit 22 that supplies an image signal to be displayed on the display.
  • the image signal supply device (2 or 2a) according to aspect 2 of the present invention further includes the image signal conversion unit 31 in the above aspect 1, and the cable state detection unit 21 is configured to When it is detected that at least one of the plurality of cables is not in the connected state, the image signal related to each of the plurality of partial areas is referred to, and only the cables other than the cables not in the connected state are used. It may be converted to an image signal for display.
  • the cable state detection unit 21 detects that at least one of the plurality of cables is not connected. In this case, any cable in a connected state may be automatically selected as a cable for supplying an image signal to be displayed in the entire display area.
  • the cable state detection unit 21 detects that at least one of the plurality of cables is not connected.
  • the cable may be selected by the user in advance as a cable for supplying an image signal to be displayed in the entire display area.
  • the image signal supply device (2 or 2a) according to aspect 5 of the present invention may be configured to select all the cables in the continuous state in aspect 1 or 2 described above.
  • the cable state detection unit 21 is at least one of the plurality of cables. If it is detected that the cable is not in the connected state, a notification may be supplied to the effect that the cable is not in the connected state.
  • the image signal supply device (2 or 2a) according to aspect 7 of the present invention may have a configuration in which the cable is a cable according to the HDMI standard in any one of the above aspects 1 to 6.
  • An image signal related to each of a plurality of partial areas supplied by the image signal supply device (2 or 2a) and the plurality of partial areas supplied by the image signal supply device (2 or 2a) according to aspect 8 of the present invention A display system (1 or 1a) comprising the display device (5 or 5a) according to any one of the aspects 1 to 7, and the image signal supply device (2 or 2a) according to any one of the aspects 1 to 7.
  • the image signal related to each of the plurality of partial regions supplied by the image signal supply device (2 or 2a) may be input, and the display device (5 or 5a) constituting the display region may be provided.
  • An image signal supply method is an image signal supply method for supplying an image signal relating to each of a plurality of partial areas constituting a display area using a plurality of cables, comprising: Among the plurality of cables, when it is detected that at least one of the plurality of cables is not in the connection state in the cable state detection step of detecting whether each is in the connection state and the cable state detection step An image signal supply step of supplying an image signal to be displayed over the entire display area to a cable other than the cable which is not in the connected state.
  • a control program according to aspect 10 of the present invention is a control program for causing a computer to function as an image signal supply device (2 or 2a) according to any one of the aspects 1 to 7 above, May be configured to function as the image signal supply device (2 or 2a).
  • the recording medium according to aspect 11 of the present invention may be a computer readable recording medium having the control program according to aspect 10 recorded thereon.
  • the image signal supply device (2 or 2a) may be realized by a computer, and in this case, each unit (software element) which the computer comprises in the image signal supply device (2 or 2a) A control program of an image signal supply device (2 or 2a) which causes the computer to realize the above image signal supply device (2 or 2a) by operating as a computer, and a computer readable recording medium recording the same. It falls in the category.

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  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

The present invention prevents omission in a video. An image signal supply device (2 or 2a) is provided with: a cable state detection unit (21) that detects whether a plurality of cables are each in a connected state; and an image signal supply unit (22) that supplies, when the cable state detection unit (21) detects that at least any of the plurality of cables are not in the connected state, an image signal for display on an entire display region to the cables that are among the plurality of cables and that are other than the cables which are not in the connected state.

Description

画像信号供給装置、表示システム、画像信号供給方法、制御プログラム及び記録媒体Image signal supply apparatus, display system, image signal supply method, control program and recording medium
　本発明は、画像信号供給装置、表示システム、画像信号供給方法、制御プログラム及び記録媒体に関する。 The present invention relates to an image signal supply device, a display system, an image signal supply method, a control program, and a recording medium.
　近年、８Ｋ映像と呼ばれる７６８０×４３２０の解像度を有する映像の表示に係る機器類が存在する。 In recent years, there are devices related to displaying an image having a resolution of 7680 × 4320 called 8K image.
　ＳＴＢ（Set Top Box）等の画像信号供給装置から表示装置に対し８Ｋ映像を出力する場合には、例えばＨＤＭＩ（登録商標）２．１規格のケーブルが必要であるが、上記規格のケーブルは普及の過渡期にある。その為、上記出力を行う場合には、４Ｋ映像（３８４０×２１６０）を出力可能なＨＤＭＩ２．０規格のケーブル４本を使用する構成が顕著である。 In the case of outputting 8K video to a display device from an image signal supply device such as STB (Set Top Box), a cable of HDMI (registered trademark) 2.1 standard, for example, is required, but the cable of the above standard is widespread In the transition period of Therefore, when the above output is performed, the configuration using four HDMI 2.0 standard cables capable of outputting 4K video (3840 × 2160) is remarkable.
　下記の特許文献１では、複数の映像信号伝送路を持ち、上記映像信号伝送路の何れかが遮断された場合に、残りの映像信号伝送路に係る信号のみを用いて正常な映像を表示する方法が開示されている。 In Patent Document 1 below, a plurality of video signal transmission paths are provided, and when one of the video signal transmission paths is interrupted, a normal video is displayed using only the signals related to the remaining video signal transmission paths. A method is disclosed.
日本国特許公報「特開２００７－３０６１３０号公報」（２００７年１１月２２日公開）Japanese patent publication "Japanese Patent Application Laid-Open No. 2007-306130" (released on November 22, 2007)
　しかしながら、上記のような従来技術は、上記４本のケーブルのうち、１本でも抜けた状態又は断線状態になると、対応する表示画面の箇所には映像が表示されない（所謂歯抜け映像となる）為、映像品位が大きく低下するという問題がある。上記特許文献１に開示された方法は、立体映像に係る左右映像とフレームの組み合わせを変換する発明であるので、特許文献１において開示された方法を用いても上記の問題は解決されない。 However, in the prior art as described above, when at least one of the four cables is disconnected or disconnected, no image is displayed on the corresponding display screen (a so-called missing image). Therefore, there is a problem that the video quality is greatly reduced. The method disclosed in Patent Document 1 is an invention that converts a combination of left and right images and frames relating to a stereoscopic video. Therefore, even if the method disclosed in Patent Document 1 is used, the above problem is not solved.
　本発明の一態様は、上記の課題を鑑みてなされたものであり、複数のケーブルを用いて表示画面の表示領域を構成する複数の部分領域の各々に関する画像信号を供給する場合において、接続状態に無いケーブルが存在した場合に、歯抜け映像となることを防止する画像信号供給装置を実現することを目的とする。 One aspect of the present invention has been made in view of the above problems, and in the case of supplying an image signal related to each of a plurality of partial areas constituting a display area of a display screen using a plurality of cables, connection state It is an object of the present invention to realize an image signal supply device that prevents the occurrence of a missing image when there is a cable that does not exist in the above.
　上記の課題を解決するために、本発明の一態様に係る画像信号供給装置は、表示装置に対して、複数のケーブルを用いて、当該表示画面の表示領域を構成する複数の部分領域の各々に関する画像（映像）信号を供給する場合において、前記複数のケーブルの各々が接続状態にあるか否かを検知するケーブル状態検知部と、前記ケーブル状態検知部が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、前記複数のケーブルのうち、当該接続状態にないケーブル以外のケーブルに対して、表示領域全体に表示するための画像信号を供給する画像信号供給部とを備える。 In order to solve the above-mentioned subject, an image signal supply device concerning one mode of the present invention uses a plurality of cables to a display device, and each of a plurality of partial fields which constitute a display field of the display screen concerned. A cable state detection unit for detecting whether or not each of the plurality of cables is connected, and the cable state detection unit is at least one of the plurality of cables when supplying an image (video) signal relating to An image signal supply unit for supplying an image signal to be displayed over the entire display area with respect to the cables other than the cables not in the connection state among the plurality of cables when it is detected that Prepare.
　本発明の一態様によれば、複数のケーブルを用いて表示画面の表示領域を構成する複数の部分領域の各々に関する画像信号を供給する場合において、接続状態に無いケーブルが存在した場合に、所謂歯抜け映像となることを防止する画像信号供給装置を実現できる。 According to one aspect of the present invention, in the case of supplying an image signal relating to each of a plurality of partial areas constituting a display area of a display screen using a plurality of cables, so-called when there is a cable not in a connected state. It is possible to realize an image signal supply device that prevents the occurrence of a toothless image.
実施形態１に係る表示システム１を示す機能ブロック図である。FIG. 1 is a functional block diagram showing a display system 1 according to Embodiment 1. 実施形態１に係る処理の流れを示すフローチャートである。5 is a flowchart showing the flow of processing according to the first embodiment. ８Ｋ映像を表示画面に表示する例を示す１図である。It is a figure which shows the example which displays 8K imaging | video on a display screen. ４Ｋ映像を表示画面の表示領域全体に表示する例を示す図である。It is a figure which shows the example which displays 4 K imaging | video on the whole display area of a display screen. 表示領域の一部が欠落した映像再生を示す図である。It is a figure which shows the image reproduction | regeneration which a part of display area dropped. 実施形態１の変形例１に係る表示システム１ａを示す機能ブロック図である。FIG. 7 is a functional block diagram showing a display system 1a according to a first modification of the first embodiment. 実施形態２に係る処理の流れを示すフローチャートである。7 is a flowchart showing the flow of processing according to the second embodiment. ４Ｋ映像と、ケーブル状態の警告を表示画面に表示する例を示す図である。It is a figure which shows the example which displays 4 K imaging | video and the warning of a cable state on a display screen.
　本発明の実施形態について図１～図８に基づいて説明すれば以下の通りである。 The embodiment of the present invention is described below with reference to FIGS. 1 to 8.
　各実施形態の説明に先立って、本願発明で主に使用を想定しているＨＤＭＩ規格について補足する。 Prior to the description of each embodiment, the HDMI standard assumed to be mainly used in the present invention will be supplemented.
　ＨＤＭＩ（High-Definition Multimedia Interface）とは、デジタル機器どうしを接続するインターフェイスであり、映像だけでなく音声及び制御信号も併せて伝送できるケーブル規格である。ＨＤＭＩはＨＰＤ（Hot Plug Detect）機能と呼ばれる、ケーブルによる当該接続先の機器が適切に通信できる接続状態にあるか否かを検知することができる機能を有する。 HDMI (High-Definition Multimedia Interface) is an interface for connecting digital devices, and is a cable standard that can transmit not only video but also audio and control signals. The HDMI has a function called HPD (Hot Plug Detect) function, which can detect whether or not the device connected with the cable can properly communicate with the device.
　〔実施形態１〕
　以下、本発明の一実施形態について、図１～図５に基づいて説明する。 Embodiment 1
Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 5.
　本実施形態においては、画像信号供給装置から８Ｋ映像を構成する４Ｋ映像信号４つを送信し、表示装置において８Ｋ映像を再生する場合において、上記４Ｋ映像信号の何れかが適切に送信されなくなった場合に、他の４Ｋ映像をアップコンバートして表示部に表示する処理について説明する。 In the present embodiment, when the 4K video signals constituting the 8K video are transmitted from the video signal supply device and the 8K video is reproduced on the display device, any one of the 4K video signals is not properly transmitted. A process of up-converting another 4K image and displaying it on the display unit in this case will be described.
　〔１．表示システム１の構成〕
　図１に基づいて本実施形態の構成について説明する。 [1. Configuration of Display System 1]
The configuration of the present embodiment will be described based on FIG.
　図１は、本実施形態に係る表示システム１を示す機能ブロック図である。 FIG. 1 is a functional block diagram showing a display system 1 according to the present embodiment.
　図１に示す通り、表示システム１は画像信号供給装置２とテレビジョン受像機３とを備えている。画像信号供給装置２は、ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄ、制御部２０、及び記憶部３０を備えている。制御部２０は、ケーブル状態検知部２１及び画像信号供給部２２を備えている。 As shown in FIG. 1, the display system 1 includes an image signal supply device 2 and a television receiver 3. The image signal supply device 2 includes the HDMI 2.0 transmission ports 10A to 10D, a control unit 20, and a storage unit 30. The control unit 20 includes a cable state detection unit 21 and an image signal supply unit 22.
　テレビジョン受像機３は、チューナー４と表示装置５とを備えている。表示装置５は、ＨＤＭＩ２．０受信ポート１１Ａ～１１Ｄ、制御部４０、映像処理部５０、記憶部６０、及び表示部７０を備えている。 The television receiver 3 includes a tuner 4 and a display device 5. The display device 5 includes the HDMI 2.0 reception ports 11A to 11D, a control unit 40, a video processing unit 50, a storage unit 60, and a display unit 70.
　ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄは、ＨＤＭＩ２．０対応ケーブルを介して、４Ｋ映像と呼ばれる３８４０×２１６０の解像度の出力がそれぞれ可能である。 The HDMI 2.0 transmission ports 10A to 10D are each capable of outputting a 3840 × 2160 resolution called 4K video via an HDMI 2.0 compatible cable.
　画像信号供給装置２が備えるＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄと表示装置５が備えるＨＤＭＩ２．０受信ポート１１Ａ～１１ＤとはＨＤＭＩ（２．０対応）ケーブルによりそれぞれ接続されている。 The HDMI 2.0 transmission ports 10A to 10D included in the image signal supply device 2 and the HDMI 2.0 reception ports 11A to 11D included in the display device 5 are respectively connected by an HDMI (2.0 compatible) cable.
　制御部２０は、画像信号供給装置２全体を統括する制御回路であり、ケーブル状態検知部２１及び画像信号供給部２２としても機能する。ケーブル状態検知部２１は、上述したＨＤＭＩのＨＰＤ機能を用い、ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄに接続された各ＨＤＭＩケーブルによって表示装置５と適切に通信できる接続できる状態にあるか否かを検知する。画像信号供給部２２は、ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄにそれぞれ映像信号を送信させる。記憶部３０は、各種データ等を保持する。８Ｋ映像を構成する各４Ｋ映像データが、当初記憶部３０に格納されているものとする。画像信号変換部３１は、上記８Ｋ映像と同様の内容の４Ｋ映像を生成する。 The control unit 20 is a control circuit that controls the entire image signal supply device 2, and also functions as the cable state detection unit 21 and the image signal supply unit 22. The cable state detection unit 21 detects whether or not the connection state can be appropriately communicated with the display device 5 by each HDMI cable connected to the HDMI 2.0 transmission ports 10A to 10D, using the HPD function of the HDMI described above Do. The image signal supply unit 22 transmits video signals to the HDMI 2.0 transmission ports 10A to 10D. The storage unit 30 holds various data and the like. It is assumed that each 4K video data forming the 8K video is initially stored in the storage unit 30. The image signal conversion unit 31 generates a 4K video having the same content as the 8K video.
　制御部４０は、表示装置５全体を統括する制御回路である。 The control unit 40 is a control circuit that controls the entire display device 5.
　映像処理部５０は、表示装置５が備えるＨＤＭＩ２．０受信ポート１１Ａ～１１Ｄにそれぞれ入力された４つの４Ｋ映像を１つの８Ｋ映像に統合する制御回路であって、その他、映像のコンバータとしても機能する。なお、制御部４０が映像処理部５０として機能する構成であってもよい。 The image processing unit 50 is a control circuit that integrates four 4K images input to the HDMI 2.0 reception ports 11A to 11D included in the display device 5 into one 8K image, and also functions as an image converter Do. The control unit 40 may function as the video processing unit 50.
　記憶部６０は、各種映像データ等を保持する。表示部７０は、動画像を表示する表示パネルであって、８Ｋ映像を再生する７６８０×４３２０の解像度を有する。 The storage unit 60 holds various video data and the like. The display unit 70 is a display panel that displays a moving image, and has a resolution of 7680 × 4320 that reproduces an 8K image.
　〔２．処理の流れ〕
　以下、表示システム１における処理の流れについて図１～図５に基づいてステップごとに説明する。 [2. Flow of processing]
Hereinafter, the flow of processing in the display system 1 will be described step by step based on FIG. 1 to FIG.
　図２は、本実施形態に係る処理の流れを示すフローチャートである。
（Ｓ１０１）
　本ステップでは、ケーブル状態検知部２１が、ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄ全てから対応するＨＤＭＩ２．０受信ポート１１Ａ～１１Ｄへ適切にデータが送信できる状態であるか否かを上記のＨＰＤ機能を用いて判定を行う。 FIG. 2 is a flowchart showing the flow of processing according to the present embodiment.
(S101)
In this step, the above-described HPD function is used to determine whether the cable status detection unit 21 can appropriately transmit data from the HDMI 2.0 transmission ports 10A to 10D to the corresponding HDMI 2.0 reception ports 11A to 11D. Use the judgment.
　適切にデータが送信できる状態であればステップＳ１０２へ、ポート間を繋ぐケーブルの断線等により、少なくとも何れかのポート間においてデータが適切に送信できない状態であればステップＳ１０３へ遷移する。
（Ｓ１０２）
　画像信号供給部２２は、記憶部３０に格納されている８Ｋ映像を構成する各４Ｋ映像に係る信号をＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄからそれぞれ送信させる。 If the data can be properly transmitted, the process proceeds to step S102. If the data can not be properly transmitted between at least one of the ports due to disconnection of the cable connecting the ports, the process proceeds to step S103.
(S102)
The image signal supply unit 22 causes the HDMI 2.0 transmission ports 10A to 10D to transmit signals related to each 4K image forming the 8K image stored in the storage unit 30.
　ＨＤＭＩ２．０受信ポート１１Ａ～１１Ｄは上記４Ｋ映像信号をそれぞれ受信する。制御部４０は上記４Ｋ映像信号に係るデータを記憶部６０に格納する。 The HDMI 2.0 reception ports 11A to 11D respectively receive the 4K video signal. The control unit 40 stores data related to the 4K video signal in the storage unit 60.
　映像処理部５０は４つの上記４Ｋ映像を１つの８Ｋ映像に統合する。 The image processing unit 50 integrates the four 4K images into one 8K image.
　図３は、上記８Ｋ映像を表示部７０に表示する例を示す図である。 FIG. 3 is a diagram showing an example of displaying the 8K video on the display unit 70. As shown in FIG.
　制御部４０は、記憶部６０に格納された当該データを参照して、図３のように上記８Ｋ映像を表示部７０に表示させる。 The control unit 40 refers to the data stored in the storage unit 60 and causes the display unit 70 to display the 8K video as shown in FIG. 3.
　ケーブル状態検知部２１は、所定の単位時間ごとに、ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄを監視する。 The cable status detection unit 21 monitors the HDMI 2.0 transmission ports 10A to 10D at predetermined unit time intervals.
　ケーブル状態検知部２１による判定のため、再度ステップＳ１０１へ遷移する。
（Ｓ１０３）
　画像信号変換部３１は、記憶部３０に格納されている上記８Ｋ映像（を構成する部分映像である各４Ｋ映像）を参照し、上記８Ｋ映像と同様の内容の４Ｋ映像を記憶部３０上に生成し、生成した４Ｋ映像を記憶部３０に格納する。換言すると、上記８Ｋ映像信号を、接続状態にないケーブル以外のケーブルのみを用いて表示部７０の表示領域全体に表示するための４Ｋ映像信号に変換する。或いは、画像信号変換部３１は、前記複数の部分領域の各々に関する画像信号を参照して、前記接続状態にないケーブル以外のケーブルのみを用いて表示領域全体に表示するための画像信号を生成すると表現してもよい。なお、当初から記憶部３０が、上記８Ｋ映像と同様の内容の４Ｋ映像に係るデータを保持していた場合は当然に当該データを以降の処理に用いても構わない。 In order to make a determination by the cable state detection unit 21, the process transitions to step S101 again.
(S103)
The image signal conversion unit 31 refers to the 8K video (each 4K video that is a partial video constituting the above) stored in the storage unit 30 and stores the 4K video having the same content as the 8K video on the storage unit 30. The generated 4K video is stored in the storage unit 30. In other words, the 8K video signal is converted into a 4K video signal to be displayed over the entire display area of the display unit 70 using only a cable other than the cable which is not in the connected state. Alternatively, when the image signal conversion unit 31 generates an image signal to be displayed in the entire display area by using only a cable other than the cable which is not in the connection state with reference to the image signal regarding each of the plurality of partial areas. It may be expressed. When the storage unit 30 initially holds data related to 4K video having the same content as the 8K video, the data may naturally be used for the subsequent processing.
　画像信号供給部２２は、表示部７０の表示領域全体に表示するための画像信号として、記憶部３０に格納されている上記８Ｋ映像と同様の内容の４Ｋ映像信号を、適切に通信可能なＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄのうち、何れかのポート（ケーブル）から供給させ、上記ポート以外からの当該映像信号の送信を停止させる。上記ポートは例えば数字の若いポートを優先して自動選択する。 The image signal supply unit 22 can properly communicate the 4K image signal having the same content as the 8K image stored in the storage unit 30 as an image signal to be displayed on the entire display area of the display unit 70. .0 Transmission ports 10A to 10D are supplied from any port (cable) to stop transmission of the video signal from other than the above ports. The port automatically selects, for example, a port with a lower number.
　上記のＨＤＭＩ２．０送信ポート（１０Ａ、１０Ｂ、１０Ｃ又は１０Ｄ）と対応するＨＤＭＩ２．０受信ポート（１１Ａ、１１Ｂ、１１Ｃ又は１１Ｄ）は、上記４Ｋ映像信号を受信する。制御部４０は上記４Ｋ映像信号に係るデータを記憶部６０に格納する。 The HDMI 2.0 reception port (11A, 11B, 11C or 11D) corresponding to the above HDMI 2.0 transmission port (10A, 10B, 10C or 10D) receives the 4K video signal. The control unit 40 stores data related to the 4K video signal in the storage unit 60.
　映像処理部５０は、上記４Ｋ映像信号を表示部７０の表示領域全体に再生できる大きさにアップコンバートする。 The video processing unit 50 up-converts the 4K video signal into a size that allows the entire display area of the display unit 70 to be reproduced.
　図４は、上記４Ｋ映像を表示部７０の表示領域全体に表示する例を示す図である。また、図４は、部分映像Ｂに係る映像信号の送信に係るＨＤＭＩケーブルが抜けていることを示している。制御部４０は、図４のように上記４Ｋ映像を表示部７０に表示させる。 FIG. 4 is a diagram showing an example in which the 4K video is displayed on the entire display area of the display unit 70. As shown in FIG. Further, FIG. 4 shows that the HDMI cable related to transmission of the video signal related to the partial video B is disconnected. The control unit 40 causes the display unit 70 to display the 4K video as shown in FIG.
　なお、適切にデータを送信できないポート（ケーブル）の状態を復旧させた場合の処理については、後述する実施形態２において説明する。 A process in the case where the state of the port (cable) which can not transmit data appropriately is restored will be described in a second embodiment described later.
　図５は、表示領域の一部が欠落した映像再生を示す図である。 FIG. 5 is a diagram showing video reproduction in which a part of the display area is missing.
　上記の構成によれば、正常に送受信が行えないポート又はＨＤＭＩケーブルが存在した場合においても、表示画面が歯抜け映像となることを防止する効果を奏する。 According to the above configuration, even in the case where there is a port or an HDMI cable that can not perform normal transmission and reception, it is possible to prevent the display screen from becoming a missing image.
　［変形例１］
　本変形例では、実施形態１を更に一般化した構成について図６に基づいて説明する。 [Modification 1]
In this modification, a configuration in which the first embodiment is further generalized will be described based on FIG.
　図６は、本変形例に係る表示システム１ａを示す機能ブロック図である。図６に示すように、画像信号供給装置２ａは、図１に示す画像信号供給装置２が備えるＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄに替わり、複数の映像送信ポート１２Ａ及び１２Ｂ等を備えている。また、表示装置５ａは、表示装置５が備えているＨＤＭＩ２．０受信ポート１１Ａ～１１Ｄに替わり、複数の映像受信ポート１３Ａ及び１３Ｂ等をそれぞれ備えている。 FIG. 6 is a functional block diagram showing a display system 1a according to the present modification. As shown in FIG. 6, the image signal supply device 2a includes a plurality of video transmission ports 12A and 12B, etc., instead of the HDMI 2.0 transmission ports 10A to 10D included in the image signal supply device 2 shown in FIG. Further, the display device 5a includes a plurality of video reception ports 13A and 13B, etc., instead of the HDMI 2.0 reception ports 11A to 11D included in the display device 5.
　上記構成において、各ポート間を接続するケーブルは、上記ポートに準拠した規格のケーブルである。 In the above configuration, the cable connecting between the ports is a standard cable conforming to the port.
　また、表示装置５ａが備える表示部７０ａは、８Ｋ映像を再生する７６８０×４３２０の解像度であることに限定されない。ただし、表示部７０ａの解像度は、上記映像送信ポートから送信可能な解像度の部分映像信号全てにより構成される表示領域の解像度と等しい。 In addition, the display unit 70a included in the display device 5a is not limited to the resolution of 7680 × 4320 for reproducing 8K video. However, the resolution of the display unit 70a is equal to the resolution of the display area constituted by all the partial video signals of the resolution that can be transmitted from the video transmission port.
　当初、記憶部３０には、表示部７０ａの表示領域の解像度と等しい全体映像を構成する各部分映像データが格納されている。 At the beginning, the storage unit 30 stores partial video data constituting an entire video having the same resolution as the display area of the display unit 70a.
　上記の構成において、実施形態１に相当する処理を行う。即ち、画像信号変換部３１は、記憶部３０に格納されている各部分映像データであって、表示部７０ａの表示領域の解像度と等しい全体映像を構成する各部分映像データを参照し、表示部７０ａの表示領域の解像度と等しい全体映像と同様の内容の映像データであって、映像送信ポート１２Ａ又は１２Ｂ等のうち何れか１箇所から送信可能な解像度の映像データを生成し、生成した映像データを記憶部３０に格納する。なお当初から記憶部３０が、表示部７０ａの表示領域の解像度と等しい全体映像と同様の内容の映像データであって、映像送信ポート１２Ａ又は１２Ｂ等のうち何れか１箇所から送信可能な解像度の映像データを保持していた場合は当然に当該データを以降の処理に用いても構わない。 In the above configuration, the process corresponding to the first embodiment is performed. That is, the image signal conversion unit 31 refers to each of the partial video data stored in the storage unit 30 and that constitutes the entire video equal to the resolution of the display area of the display unit 70a. Video data of the same content as the entire video equal to the resolution of the display area 70a, and video data of a resolution that can be transmitted from any one of the video transmission port 12A or 12B, etc. Are stored in the storage unit 30. Note that the storage unit 30 is video data of the same content as the whole video equal to the resolution of the display area of the display unit 70a from the beginning, and has a resolution that can be transmitted from any one of the video transmission port 12A or 12B. When the video data is held, the data may of course be used for the subsequent processing.
　画像信号供給部２２は、記憶部３０に格納されている各部分映像を、映像送信ポート１２Ａ及び１２Ｂ等からそれぞれ送信し、制御部４０は上記映像データを記憶部６０に格納する。映像処理部５０は、上記映像データを表示部７０ａの解像度と等しい解像度の映像に統合する。制御部４０は、記憶部６０に格納された当該映像に係るデータを参照して、上記映像を表示部７０ａに表示させる。 The video signal supply unit 22 transmits each partial video stored in the storage unit 30 from the video transmission ports 12A and 12B and the like, and the control unit 40 stores the video data in the storage unit 60. The video processing unit 50 integrates the video data into a video having a resolution equal to the resolution of the display unit 70a. The control unit 40 refers to the data relating to the video stored in the storage unit 60, and causes the display unit 70a to display the video.
　上記の映像再生において、ケーブル状態検知部２１が、何れかの映像送信ポート１２Ａ又は１２Ｂ等から当該映像データが適切に送信されなくなったことを検知した場合は、画像信号供給部２２は、表示部７０ａの表示領域全体に表示するための画像信号として、記憶部３０に格納されている映像送信ポート１２Ａ又は１２Ｂ等のうち何れか１箇所から送信可能な解像度であって上記表示領域に再生する全体映像と同様の内容の映像信号を、適切に通信可能な何れかの映像送信ポート１２Ａ又は１２Ｂ等のうち、何れかのポート（ケーブル）から送信させ、上記ポート以外からの当該映像信号の送信を停止させる。上記ポートは例えば数字の若いポートを優先して自動選択する。 In the video reproduction described above, when the cable status detection unit 21 detects that the video data is not properly transmitted from any of the video transmission ports 12A or 12B or the like, the image signal supply unit 22 displays the display unit. An image signal to be displayed on the entire display area 70a, a resolution that can be transmitted from any one of the video transmission port 12A or 12B or the like stored in the storage unit 30 and reproduced in the display area as a whole A video signal having the same content as the video is transmitted from any port (cable) of any of the video transmission ports 12A and 12B etc. which can be appropriately communicated, and transmission of the video signal from other than the above port is performed. Stop it. The port automatically selects, for example, a port with a lower number.
　上記の映像送信ポート１２Ａ又は１２Ｂ等と対応する映像受信ポート１３Ａ又は１３Ｂ等は、上記映像信号を受信する。制御部４０は上記映像信号に係るデータを記憶部６０に格納する。 The video reception port 13A or 13B or the like corresponding to the above video transmission port 12A or 12B or the like receives the video signal. The control unit 40 stores data related to the video signal in the storage unit 60.
　映像処理部５０は、上記映像信号を表示部７０ａの表示領域全体に再生できる大きさにアップコンバートする。制御部４０は、記憶部６０に格納された当該データを参照し、上記の映像を表示部７０ａに表示させる。 The video processing unit 50 up-converts the video signal into a size that can be reproduced over the entire display area of the display unit 70a. The control unit 40 refers to the data stored in the storage unit 60, and causes the display unit 70a to display the above video.
　上記の構成よれば、ＨＤＭＩ２．０ケーブルを用いて、４つの４Ｋ映像から８Ｋ映像を構成する場合以外の場合においても、表示画面が歯抜け映像となることを防止する効果を奏する。 According to the above configuration, even in the case other than the case where 8K video images are configured from four 4K video images using an HDMI 2.0 cable, an effect of preventing the display screen from being a toothless video image is exhibited.
　［変形例２］
　実施形態１のステップＳ１０３において、画像信号供給部２２が、記憶部３０に格納されている８Ｋ映像と同様の内容の４Ｋ映像信号を送信させるポート（ケーブル）は、ユーザが事前に設定したポートでもよい。 [Modification 2]
In step S103 of the first embodiment, the port (cable) through which the image signal supply unit 22 transmits a 4K video signal having the same content as the 8K video stored in the storage unit 30 is a port set by the user in advance. Good.
　上記の構成においても実施形態１と同様な効果を奏する。 Also in the above configuration, the same effects as in the first embodiment can be obtained.
　［変形例３］
　実施形態１のステップＳ１０３において、画像信号供給部２２が、記憶部３０に格納されている８Ｋ映像と同様の内容の４Ｋ映像信号を送信させるポート（ケーブル）は、接続状態にある全てのポートでもよい。 [Modification 3]
In step S103 of the first embodiment, the port (cable) to which the image signal supply unit 22 transmits the 4K video signal having the same content as the 8K video stored in the storage unit 30 is also all ports in the connected state. Good.
　上記の構成においても実施形態１と同様な効果を奏する。 Also in the above configuration, the same effects as in the first embodiment can be obtained.
　なお、上記の変形例１～３は後述の実施形態にも適用可能である。 The above-described first to third modifications are also applicable to the embodiments described later.
　〔実施形態２〕
　本発明の他の実施形態について、図１、図３、図７及び図８に基づいて説明する。 Second Embodiment
Another embodiment of the present invention will be described based on FIG. 1, FIG. 3, FIG. 7 and FIG.
　本実施形態では、ユーザによるコンテンツ視聴中に、画像信号供給装置と表示装置５との何れかのポート間において適切に通信できなくなった場合に、当該状態を画面に表示する構成について説明する。 In the present embodiment, when the user can not appropriately communicate between any port of the image signal supply device and the display device 5 while viewing the content by the user, a configuration for displaying the state on the screen will be described.
　［１．表示システム１の構成］
　本実施形態においても実施形態１の場合と同様に、図１に示す構成を用いる。
［２．処理の流れ］
　以下、表示システム１における処理の流れについて図７及び図８に基づいてステップごとに説明する。 [1. Configuration of Display System 1]
Also in the present embodiment, as in the case of the first embodiment, the configuration shown in FIG. 1 is used.
[2. Processing flow]
Hereinafter, the flow of processing in the display system 1 will be described step by step based on FIGS. 7 and 8.
　図７は本実施形態に係る処理の流れを示すフローチャートである。
（Ｓ１０１）
　本ステップでは、ケーブル状態検知部２１が、ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄ全てから対応するＨＤＭＩ２．０受信ポート１１Ａ～１１Ｄへ適切にデータが送信できる状態であるか否かを上記のＨＰＤ機能を用いて判定を行う。 FIG. 7 is a flow chart showing the flow of processing according to this embodiment.
(S101)
In this step, the above-described HPD function is used to determine whether the cable status detection unit 21 can appropriately transmit data from the HDMI 2.0 transmission ports 10A to 10D to the corresponding HDMI 2.0 reception ports 11A to 11D. Use the judgment.
　適切にデータが送信できる状態であればステップＳ１０２へ、ポート間を繋ぐケーブルの断線などにより、少なくとも何れかのポート間においてデータが適切に送信できない状態であればステップＳ１０３’へ遷移する。
（Ｓ１０２）
　画像信号供給部２２は、記憶部３０に格納されている８Ｋ映像を構成する各４Ｋ映像信号（データ）をＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄからそれぞれ送信させる。 If the data can be properly transmitted, the process proceeds to step S102. If the data can not be properly transmitted between at least any of the ports due to disconnection of the cable connecting the ports, the process proceeds to step S103 '.
(S102)
The image signal supply unit 22 causes the HDMI 2.0 transmission ports 10A to 10D to transmit the 4K image signals (data) that make up the 8K image stored in the storage unit 30, respectively.
　ＨＤＭＩ２．０受信ポート１１Ａ～１１Ｄは上記４Ｋ映像信号をそれぞれ受信する。制御部４０は上記４Ｋ映像信号を記憶部６０に格納する。 The HDMI 2.0 reception ports 11A to 11D respectively receive the 4K video signal. The control unit 40 stores the 4K video signal in the storage unit 60.
　映像処理部５０は４つの上記４Ｋ映像を１つの８Ｋ映像に統合する。 The image processing unit 50 integrates the four 4K images into one 8K image.
　図３は、上記４Ｋ映像を表示部７０に表示する例を示す図である。 FIG. 3 is a view showing an example of displaying the 4K video on the display unit 70. As shown in FIG.
　制御部４０は、記憶部６０に格納された当該８Ｋ映像に係るデータを参照して、図３のように上記８Ｋ映像を表示部７０に表示させる。 The control unit 40 causes the display unit 70 to display the 8K video as shown in FIG. 3 with reference to the data related to the 8K video stored in the storage unit 60.
　ケーブル状態検知部２１は、所定の単位時間ごとに、ＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄを監視する。 The cable status detection unit 21 monitors the HDMI 2.0 transmission ports 10A to 10D at predetermined unit time intervals.
　ケーブル状態検知部２１による判定のため、再度ステップＳ１０１へ遷移する。
（Ｓ１０３’）
　画像信号変換部３１は、記憶部３０に格納されている上記８Ｋ映像（を構成する部分映像である各４Ｋ映像）を参照し、上記８Ｋ映像と同様の内容の４Ｋ映像を記憶部３０上に生成し、生成した４Ｋ映像を記憶部３０に格納する。換言すると、上記８Ｋ映像信号を、接続状態にないケーブル以外のケーブルのみを用いて表示部７０の表示領域全体に表示するための４Ｋ映像信号に変換する。或いは、画像信号変換部３１は、前記複数の部分領域の各々に関する画像信号を参照して、前記接続状態にないケーブル以外のケーブルのみを用いて表示領域全体に表示するための画像信号を生成すると表現してもよい。なお、当初から記憶部３０が、上記８Ｋ映像と同様の内容の４Ｋ映像に係るデータを保持していた場合は当然に当該データを以降の処理に用いても構わない。 In order to make a determination by the cable state detection unit 21, the process transitions to step S101 again.
(S103 ')
The image signal conversion unit 31 refers to the 8K video (each 4K video that is a partial video constituting the above) stored in the storage unit 30 and stores the 4K video having the same content as the 8K video on the storage unit 30. The generated 4K video is stored in the storage unit 30. In other words, the 8K video signal is converted into a 4K video signal to be displayed over the entire display area of the display unit 70 using only a cable other than the cable which is not in the connected state. Alternatively, when the image signal conversion unit 31 generates an image signal to be displayed in the entire display area by using only a cable other than the cable which is not in the connection state with reference to the image signal regarding each of the plurality of partial areas. It may be expressed. When the storage unit 30 initially holds data related to 4K video having the same content as the 8K video, the data may naturally be used for the subsequent processing.
　画像信号供給部２２は、表示部７０の表示領域全体に表示するための画像信号として、記憶部３０に格納されている上記８Ｋ映像と同様の内容の４Ｋ映像信号と、データが適切に送信できない状態にあるポート間に関する表示用通知とをＨＤＭＩ２．０送信ポート１０Ａ～１０Ｄのうち、何れかのポート（ケーブル）から供給させる。上記ポートは例えば数字の若いポートを優先して自動選択する。 The image signal supply unit 22 can not appropriately transmit the 4K image signal having the same content as the 8K image stored in the storage unit 30 and the data as an image signal to be displayed on the entire display area of the display unit 70. A notification for display concerning ports in a state is supplied from any port (cable) of the HDMI 2.0 transmission ports 10A to 10D. The port automatically selects, for example, a port with a lower number.
　上記のＨＤＭＩ２．０送信ポート（１０Ａ、１０Ｂ、１０Ｃ又は１０Ｄ）と対応するＨＤＭＩ２．０受信ポート（１１Ａ、１１Ｂ、１１Ｃ又は１１Ｄ）は、上記４Ｋ映像信号と上記表示用通知とを受信する。制御部４０は上記４Ｋ映像信号と上記表示用通知とに係るデータを記憶部６０に格納する。 The HDMI 2.0 reception port (11A, 11B, 11C or 11D) corresponding to the HDMI 2.0 transmission port (10A, 10B, 10C or 10D) receives the 4K video signal and the notification for display. The control unit 40 stores data related to the 4K video signal and the notification for display in the storage unit 60.
　映像処理部５０は、上記の４Ｋ映像を表示部７０の表示領域全体に再生できる大きさにアップコンバートする。 The video processing unit 50 up-converts the 4K video into a size that allows the entire display area of the display unit 70 to be reproduced.
　図８は、上記４Ｋ映像と、ケーブル状態の警告を表示部７０に表示する例を示す図である。 FIG. 8 is a view showing an example of displaying the 4K video and the warning of the cable state on the display unit 70. As shown in FIG.
　制御部４０は、記憶部６０に格納された当該４Ｋ映像に係るデータを参照し、図８のように上記４Ｋ映像を表示部７０に表示させる。また、制御部４０は、当該ポート間において適切に通信が行われていない旨についても、所定の時間、上記４Ｋ映像に重畳して表示部７０に表示させる。 The control unit 40 refers to the data relating to the 4K video stored in the storage unit 60, and causes the display unit 70 to display the 4K video as shown in FIG. The control unit 40 also causes the display unit 70 to superimpose the 4K video image for a predetermined period of time on the fact that communication is not properly performed between the ports.
　次いでステップＳ１０４に遷移する。
（Ｓ１０４）
　本ステップにおいては、ステップＳ１０３において抜けているケーブルを差しなおした（又は断線したケーブルを交換した）か否かによる分岐を行う。 Next, the process proceeds to step S104.
(S104)
In this step, branching is performed depending on whether or not the disconnected cable has been re-connected (or the broken cable has been replaced) in step S103.
　当該ケーブルを差しなおした場合は、ステップＳ１０１へ、当該ケーブルを差しなおしていない場合はステップＳ１０３’へ遷移する、
　上記の構成によれば、実施形態１と同様な効果を奏すると共に、ユーザは、８Ｋ映像ではなく４Ｋ映像が表示画面に表示されていることが容易に確認できるので、ユーザの利便性の向上に寄与する効果を奏する。 When the cable is re-inserted, the process proceeds to step S101, and when the cable is not re-inserted, the process proceeds to step S103 ′.
According to the above configuration, the same effect as that of the first embodiment can be obtained, and the user can easily confirm that the 4K video is displayed on the display screen instead of the 8K video, so that the convenience of the user can be improved. Play a contributing effect.
　〔ソフトウェアによる実現例〕
　画像信号供給装置（２又は２ａ）の制御ブロック（特にケーブル状態検知部２１及び画像信号供給部２２）は、集積回路（ＩＣチップ）等に形成された論理回路（ハードウェア）によって実現してもよいし、ソフトウェアによって実現してもよい。 [Example of software implementation]
The control block (in particular, the cable state detection unit 21 and the image signal supply unit 22) of the image signal supply device (2 or 2a) may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like. It may be realized by software.
　後者の場合、画像信号供給装置（２又は２ａ）は、各機能を実現するソフトウェアであるプログラムの命令を実行するコンピュータを備えている。このコンピュータは、例えば少なくとも１つのプロセッサ（制御装置）を備えていると共に、上記プログラムを記憶したコンピュータ読み取り可能な少なくとも１つの記録媒体を備えている。そして、上記コンピュータにおいて、上記プロセッサが上記プログラムを上記記録媒体から読み取って実行することにより、本発明の目的が達成される。上記プロセッサとしては、例えばＣＰＵ（Central Processing Unit）を用いることができる。上記記録媒体としては、「一時的でない有形の媒体」、例えば、ＲＯＭ（Read Only Memory）等の他、テープ、ディスク、カード、半導体メモリ、プログラマブルな論理回路などを用いることができる。また、上記プログラムを展開するＲＡＭ（Random Access Memory）などをさらに備えていてもよい。また、上記プログラムは、該プログラムを伝送可能な任意の伝送媒体（通信ネットワークや放送波等）を介して上記コンピュータに供給されてもよい。なお、本発明の一態様は、上記プログラムが電子的な伝送によって具現化された、搬送波に埋め込まれたデータ信号の形態でも実現され得る。 In the latter case, the image signal supply device (2 or 2a) includes a computer that executes instructions of a program that is software that implements each function. The computer includes, for example, at least one processor (control device) and at least one computer readable storage medium storing the program. Then, in the computer, the processor reads the program from the recording medium and executes the program to achieve the object of the present invention. For example, a CPU (Central Processing Unit) can be used as the processor. As the above-mentioned recording medium, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit or the like can be used besides “a non-temporary tangible medium”, for example, a ROM (Read Only Memory). In addition, a RAM (Random Access Memory) or the like for developing the program may be further provided. The program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. Note that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.
　〔まとめ〕
　本発明の態様１に係る画像信号供給装置（２又は２ａ）は、表示部（７０又は７０ａ）に対して、複数のケーブルを用いて、上記表示部（７０又は７０ａ）の表示領域を構成する複数の部分領域の各々に関する画像信号を供給する、画像信号供給装置（２又は２ａ）であって、上記複数のケーブルの各々が接続状態にあるか否かを検知するケーブル状態検知部２１と、上記ケーブル状態検知部２１が、上記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、上記複数のケーブルのうち、上記接続状態にないケーブル以外のケーブルに対して、表示領域全体に表示するための画像信号を供給する画像信号供給部２２と、を備えている構成である。 [Summary]
The image signal supply device (2 or 2a) according to aspect 1 of the present invention configures a display area of the display unit (70 or 70a) using a plurality of cables with respect to the display unit (70 or 70a) A cable state detection unit (21) for supplying an image signal concerning each of a plurality of partial areas, and detecting whether or not each of the plurality of cables is in a connection state; When the cable state detection unit 21 detects that at least one of the plurality of cables is not in the connection state, the entire display area is obtained with respect to cables other than the cables in the connection state among the plurality of cables. And an image signal supply unit 22 that supplies an image signal to be displayed on the display.
　上記の構成によれば、正常に送受信が行えないポート又はケーブルが存在した場合においても、表示画面が歯抜け映像となることを防止する効果を奏する。 According to the above configuration, even in the case where there is a port or a cable that can not perform normal transmission and reception, it is possible to prevent the display screen from becoming a missing image.
　本発明の態様２に係る画像信号供給装置（２又は２ａ）は、上記の態様１において、画像信号変換部３１を更に備え、前記画像信号変換部３１は、前記ケーブル状態検知部２１が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、前記複数の部分領域の各々に関する画像信号を参照して、前記接続状態にないケーブル以外のケーブルのみを用いて表示領域全体に表示するための画像信号に変換する構成としてもよい。 The image signal supply device (2 or 2a) according to aspect 2 of the present invention further includes the image signal conversion unit 31 in the above aspect 1, and the cable state detection unit 21 is configured to When it is detected that at least one of the plurality of cables is not in the connected state, the image signal related to each of the plurality of partial areas is referred to, and only the cables other than the cables not in the connected state are used. It may be converted to an image signal for display.
　上記の構成によれば、当初から記憶部３０が、上記８Ｋ映像と同様の内容の４Ｋ映像に係るデータを保持していない場合においても、態様１と同様な効果を奏する。 According to the above configuration, even in the case where the storage unit 30 does not hold data relating to 4K video having the same content as the 8K video from the beginning, the same effect as in aspect 1 is achieved.
　本発明の態様３に係る、画像信号供給装置（２又は２ａ）は、上記の態様１又は２において、上記ケーブル状態検知部２１が、上記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、表示領域全体に表示するための画像信号を供給するケーブルとして、接続状態にある何れかのケーブルを自動選択する構成としてもよい。 In the image signal supply device (2 or 2a) according to aspect 3 of the present invention, in the above aspect 1 or 2, the cable state detection unit 21 detects that at least one of the plurality of cables is not connected. In this case, any cable in a connected state may be automatically selected as a cable for supplying an image signal to be displayed in the entire display area.
　本発明の態様４に係る、画像信号供給装置（２又は２ａ）は、上記の態様１又は２において、上記ケーブル状態検知部２１が、上記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、表示領域全体に表示するための画像信号を供給するケーブルとして、ユーザが事前に設定したケーブルを選択する構成としてもよい。 In the image signal supply device (2 or 2a) according to aspect 4 of the present invention, in the above aspect 1 or 2, the cable state detection unit 21 detects that at least one of the plurality of cables is not connected. In this case, the cable may be selected by the user in advance as a cable for supplying an image signal to be displayed in the entire display area.
　本発明の態様５に係る、画像信号供給装置（２又は２ａ）は、上記の態様１又は２において、続状態にある全てのケーブルを選択する構成としてもよい。 The image signal supply device (2 or 2a) according to aspect 5 of the present invention may be configured to select all the cables in the continuous state in aspect 1 or 2 described above.
　本発明の態様６に係る、画像信号供給装置（２又は２ａ）は、上記の態様１から５までの何れか１態様において、上記ケーブル状態検知部２１が、上記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、上記ケーブルが接続状態にない旨の通知を供給する構成としてもよい。 In the image signal supply device (2 or 2a) according to aspect 6 of the present invention, in any one of the aspects 1 to 5 above, the cable state detection unit 21 is at least one of the plurality of cables. If it is detected that the cable is not in the connected state, a notification may be supplied to the effect that the cable is not in the connected state.
　上記の構成によれば、態様１と同様の効果を奏すると共に、ユーザは、当該ポート間における通信が適切になされていないことが容易に確認できるので、ユーザの利便性の向上に寄与する効果を奏する。 According to the above configuration, the same effect as in aspect 1 can be obtained, and the user can easily confirm that the communication between the ports is not properly performed. Play.
　本発明の態様７に係る、画像信号供給装置（２又は２ａ）は、上記の態様１から６までの何れか１態様において、上記ケーブルとはＨＤＭＩ規格のケーブルである構成としてもよい。 The image signal supply device (2 or 2a) according to aspect 7 of the present invention may have a configuration in which the cable is a cable according to the HDMI standard in any one of the above aspects 1 to 6.
　上記の構成によれば、ＨＤＭＩ規格のケーブルを用いた構成においても、態様１と同様な効果を奏する。 According to the above configuration, even in the configuration using the cable of the HDMI standard, the same effect as that of the aspect 1 is obtained.
　本発明の態様８に係る、画像信号供給装置（２又は２ａ）と、上記、画像信号供給装置（２又は２ａ）が供給する複数の部分領域の各々に関する画像信号を入力し、表示領域を構成する表示装置（５又は５ａ）と、を備えることを特徴とする表示システム（１又は１ａ）は、態様１から７までの何れか１態様に記載の、画像信号供給装置（２又は２ａ）と、上記、画像信号供給装置（２又は２ａ）が供給する複数の部分領域の各々に関する画像信号を入力し、表示領域を構成する表示装置（５又は５ａ）と、を備える構成としてもよい。 An image signal related to each of a plurality of partial areas supplied by the image signal supply device (2 or 2a) and the plurality of partial areas supplied by the image signal supply device (2 or 2a) according to aspect 8 of the present invention A display system (1 or 1a) comprising the display device (5 or 5a) according to any one of the aspects 1 to 7, and the image signal supply device (2 or 2a) according to any one of the aspects 1 to 7. The image signal related to each of the plurality of partial regions supplied by the image signal supply device (2 or 2a) may be input, and the display device (5 or 5a) constituting the display region may be provided.
　上記の構成によれば、態様１の効果を奏する表示システム（１又は１ａ）を実現できる。 According to the above configuration, it is possible to realize the display system (1 or 1a) that achieves the effect of aspect 1.
　本発明の態様９に係る画像信号供給方法は、複数のケーブルを用いて、表示領域を構成する複数の部分領域の各々に関する画像信号を供給する画像信号供給方法であって、上記複数のケーブルの各々が接続状態にあるか否かを検知するケーブル状態検知ステップと、上記ケーブル状態検知ステップにおいて、上記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、上記複数のケーブルのうち、上記接続状態にないケーブル以外のケーブルに対して、表示領域全体に表示するための画像信号を供給する画像信号供給ステップと、を含んでいる方法である。 An image signal supply method according to a ninth aspect of the present invention is an image signal supply method for supplying an image signal relating to each of a plurality of partial areas constituting a display area using a plurality of cables, comprising: Among the plurality of cables, when it is detected that at least one of the plurality of cables is not in the connection state in the cable state detection step of detecting whether each is in the connection state and the cable state detection step An image signal supply step of supplying an image signal to be displayed over the entire display area to a cable other than the cable which is not in the connected state.
　上記の方法によれば、態様１と同様な効果を奏する。 According to the above method, the same effect as that of aspect 1 is achieved.
　本発明の態様１０に係る制御プログラムは、上記の態様１から７までの何れか１態様に係る、画像信号供給装置（２又は２ａ）としてコンピュータを機能させるための制御プログラムであって、上記コンピュータを上記、画像信号供給装置（２又は２ａ）して機能させる構成としてもよい。 A control program according to aspect 10 of the present invention is a control program for causing a computer to function as an image signal supply device (2 or 2a) according to any one of the aspects 1 to 7 above, May be configured to function as the image signal supply device (2 or 2a).
　本発明の態様１１に係る記録媒体は、態様１０に係る制御プログラムを記録したコンピュータ読み取り可能な記録媒体であってもよい。 The recording medium according to aspect 11 of the present invention may be a computer readable recording medium having the control program according to aspect 10 recorded thereon.
　本発明の各態様に係る画像信号供給装置（２又は２ａ）は、コンピュータによって実現してもよく、この場合には、コンピュータを上記画像信号供給装置（２又は２ａ）が備える各部（ソフトウェア要素）として動作させることにより上記画像信号供給装置（２又は２ａ）をコンピュータにて実現させる画像信号供給装置（２又は２ａ）の制御プログラム、及びそれを記録したコンピュータ読み取り可能な記録媒体も、本発明の範疇に入る。 The image signal supply device (2 or 2a) according to each aspect of the present invention may be realized by a computer, and in this case, each unit (software element) which the computer comprises in the image signal supply device (2 or 2a) A control program of an image signal supply device (2 or 2a) which causes the computer to realize the above image signal supply device (2 or 2a) by operating as a computer, and a computer readable recording medium recording the same. It falls in the category.
　本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。さらに、各実施形態にそれぞれ開示された技術的手段を組み合わせることにより、新しい技術的特徴を形成することができる。 The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.
　１、１ａ　表示システム
　２、２ａ　画像信号供給装置
　３　テレビジョン受像機
　４　チューナー
　５、５ａ　表示装置
　１０、４０　制御部
　１０Ａ～１０Ｄ　ＨＤＭＩ２．０送信ポート
　１１Ａ～１１Ｄ　ＨＤＭＩ２．０受信ポート
　１２Ａ、１２Ｂ　映像送信ポート
　１３Ａ、１３Ｂ　映像受信ポート
　２１　ケーブル状態検知部
　２２　画像信号供給部
　３０、６０　記憶部
　３１　画像信号変換部
　５０　映像処理部
　７０、７０ａ　表示部 1, 1a Display System 2, 2a Image Signal Supply Device 3 Television Receiver 4 Tuner 5, 5a Display Device 10, 40 Control Unit 10A to 10D HDMI 2.0 Transmission Port 11A to 11D HDMI 2.0 Reception Port 12A, 12B Image Transmission Port 13A, 13B Image receiving port 21 Cable status detection unit 22 Image signal supply unit 30, 60 Storage unit 31 Image signal conversion unit 50 Image processing unit 70, 70a Display unit

Claims (11)

  1. 　表示部に対して、複数のケーブルを用いて、前記表示部の表示領域を構成する複数の部分領域の各々に関する画像信号を供給する画像信号供給装置であって、
    　前記複数のケーブルの各々が接続状態にあるか否かを検知するケーブル状態検知部と、
    　前記ケーブル状態検知部が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、前記複数のケーブルのうち、前記接続状態にないケーブル以外のケーブルに対して、表示領域全体に表示するための画像信号を供給する画像信号供給部と、
    を備えていることを特徴とする画像信号供給装置。     An image signal supply device for supplying an image signal regarding each of a plurality of partial areas constituting a display area of the display unit to a display unit using a plurality of cables,
    A cable state detection unit that detects whether each of the plurality of cables is in a connected state;
    When the cable state detection unit detects that at least one of the plurality of cables is not in the connection state, the entire display area is selected for the cables other than the cables in the connection state among the plurality of cables. An image signal supply unit that supplies an image signal to be displayed;
    An image signal supply apparatus comprising:
  2. 　画像信号変換部を更に備え、
    　前記画像信号変換部は、
    　前記ケーブル状態検知部が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、
    　前記複数の部分領域の各々に関する画像信号を参照して、前記接続状態にないケーブル以外のケーブルのみを用いて表示領域全体に表示するための画像信号を生成することを特徴とする請求項１に記載の画像信号供給装置。     It further comprises an image signal converter,
    The image signal conversion unit
    When the cable state detection unit detects that at least one of the plurality of cables is not in the connection state,
    The image signal to be displayed over the entire display area is generated using only a cable other than the cable which is not in the connected state, with reference to the image signal related to each of the plurality of partial areas. Image signal supply apparatus as described.
  3. 　前記ケーブル状態検知部が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、表示領域全体に表示するための画像信号を供給するケーブルとして、接続状態にある何れかのケーブルを自動選択することを特徴とする請求項１又は２に記載の画像信号供給装置。 Any of the cables in a connected state as a cable for supplying an image signal to be displayed on the entire display area when the cable state detection unit detects that at least one of the plurality of cables is not in a connected state. The image signal supply device according to claim 1 or 2, wherein the image signal is automatically selected.
  4. 　前記ケーブル状態検知部が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、表示領域全体に表示するための画像信号を供給するケーブルとして、ユーザが事前に設定したケーブルを選択することを特徴とする請求項１又は２に記載の画像信号供給装置。 When the cable state detection unit detects that at least one of the plurality of cables is not in a connected state, a cable previously set by the user is used as a cable for supplying an image signal to be displayed over the entire display area. The image signal supply device according to claim 1 or 2, wherein selection is made.
  5. 　前記ケーブル状態検知部が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、表示領域全体に表示するための画像信号を供給するケーブルとして、接続状態にある全てのケーブルを選択することを特徴とする請求項１又は２に記載の画像信号供給装置。 When the cable state detection unit detects that at least one of the plurality of cables is not in the connection state, all the cables in the connection state are provided as cables for supplying an image signal to be displayed over the entire display area. The image signal supply device according to claim 1 or 2, wherein selection is made.
  6. 　前記ケーブル状態検知部が、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、前記ケーブルが接続状態にない旨の表示用通知を供給することを特徴とする請求項１から５までの何れか１項に記載の画像信号供給装置。 The cable state detection unit supplies a notification for display indicating that the cable is not in the connection state when detecting that at least one of the plurality of cables is not in the connection state. 5. The image signal supply device according to any one of the items 1 to 5.
  7. 　前記ケーブルとは、ＨＤＭＩ規格のケーブルであることを特徴とする請求項１から６までの何れか１項に記載の画像信号供給装置。 The image signal supply device according to any one of claims 1 to 6, wherein the cable is a cable according to the HDMI standard.
  8. 　請求項１から７までの何れか１項に記載の画像信号供給装置と、
    　前記画像信号供給装置が供給する複数の部分領域の各々に関する画像信号を入力し、表示領域を構成する表示装置と、
    を備えることを特徴とする表示システム。     An image signal supply device according to any one of claims 1 to 7;
    A display device configured to receive an image signal related to each of a plurality of partial regions supplied by the image signal supply device, and to configure a display region;
    A display system comprising:
  9. 　複数のケーブルを用いて、表示領域を構成する複数の部分領域の各々に関する画像信号を供給する画像信号供給方法であって、
    　前記複数のケーブルの各々が接続状態にあるか否かを検知するケーブル状態検知ステップと、
    　前記ケーブル状態検知ステップにおいて、前記複数のケーブルの少なくとも何れかが接続状態にないと検知した場合に、前記複数のケーブルのうち、前記接続状態にないケーブル以外のケーブルに対して、表示領域全体に表示するための画像信号を供給する画像信号供給ステップと、
    を含んでいることを特徴とする画像信号供給方法。     What is claimed is: 1. A method of supplying an image signal using a plurality of cables to supply an image signal regarding each of a plurality of partial areas constituting a display area, comprising:
    A cable state detection step of detecting whether each of the plurality of cables is in a connected state;
    In the cable state detection step, when it is detected that at least one of the plurality of cables is not in the connection state, the entire display area is selected for the cables other than the cables in the connection state among the plurality of cables. An image signal supply step of supplying an image signal to be displayed;
    A method of supplying an image signal, comprising:
  10. 　請求項１から７までの何れか１項に記載の画像信号供給装置としてコンピュータを機能させるための制御プログラムであって、前記ケーブル状態検知部及び前記画像信号供給部としてコンピュータを機能させるための制御プログラム。 A control program for causing a computer to function as the image signal supply device according to any one of claims 1 to 7, the control for causing a computer to function as the cable state detection unit and the image signal supply unit. program.
  11. 　請求項１０に記載の制御プログラムを記載したコンピュータ読み取り可能な記録媒体。 A computer readable recording medium in which the control program according to claim 10 is written.
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