WO2022244338A1 - 映像信号処理装置、映像信号処理方法、映像信号出力装置およびマルチディスプレイシステム - Google Patents
映像信号処理装置、映像信号処理方法、映像信号出力装置およびマルチディスプレイシステム Download PDFInfo
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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
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/006—Details of the interface to the display terminal
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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
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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
- 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
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- 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
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- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
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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]
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- G09G2370/042—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller for monitor identification
Definitions
- the present technology relates to a video signal processing device, a video signal processing method, a video signal output device, and a multi-display system, and more specifically, a video signal processing device that extracts a plurality of video streams from a multi-stream and transmits each to a corresponding display device. etc.
- Patent Document 1 discloses a control method for multi-display display using a multi-stream transmission function of DisplayPort.
- the multi-stream signal transmitted from the source device is processed using information such as resolution on the sink device side within the prescribed definition of DisplayPort, thereby realizing multi-display display.
- the sink device processes signals with a resolution that it can reproduce in the transmitted multistream so that it can be displayed, and for signals that are not compatible, Output directly to the device.
- the purpose of this technology is to make it possible to supply an appropriate video stream to each of multiple display devices according to the type of multi-display display.
- the concept of this technology is an information receiving unit that receives performance information from each of the plurality of display devices; an information transmission unit that generates multi-stream information based on performance information of the plurality of display devices and information on types of multi-display display realized by the plurality of display devices and transmits the multi-stream information to a video signal output device; a multi-stream receiving unit for receiving a multi-stream including video streams for each of the plurality of display devices generated based on the multi-stream information from the video signal output device;
- the video signal processing device includes a video stream transmission unit that extracts the plurality of video streams from the multistream and transmits each of the plurality of video streams to corresponding display devices among the plurality of display devices.
- the performance information is received from each of the plurality of display devices by the information receiving unit.
- the information transmission unit generates multi-stream information based on the performance information of the plurality of display devices and information on the type of multi-display display realized by the plurality of display devices, and transmits the multi-stream information to the video signal output device.
- the type of multi-display display may include at least one of arbitrary arrangement, preset arrangement, planar arrangement, circumferential arrangement and spherical arrangement.
- the multi-stream information may include information on the number of multiple display devices and information on the type of multi-display display. This enables the video signal output device to appropriately generate video streams for each of the plurality of display devices according to the type of multi-display display.
- the multi-stream information may include stream identification information and arrangement position information corresponding to each of a plurality of display devices.
- the video signal output device can generate a video stream for each of the plurality of display devices in accordance with the arrangement position, and appropriately include stream identification information indicating which display device the video stream corresponds to. becomes possible.
- the multi-stream information may include information on the pixel position at the upper left corner of the screen corresponding to each of a plurality of display devices.
- the video signal output device appropriately generates video streams for each of the plurality of display devices according to the arrangement positions and resolutions of the plurality of display devices. It becomes possible to
- the multi-stream information includes information on the screen center angle and information on the occupied viewing angle corresponding to each of the plurality of display devices.
- the video signal output device appropriately generates video streams for each of the plurality of display devices in accordance with the arrangement positions of the plurality of display devices. It becomes possible to
- the multi-stream information includes information on the center angle in the horizontal direction of the screen, information on the center angle in the vertical direction of the screen, and information on the horizontal direction of the screen, corresponding to each of the plurality of display devices. It may include information of occupied viewing angle in direction or portrait.
- the video signal output device can appropriately generate video streams for each of the plurality of display devices according to the arrangement positions of the plurality of display devices. becomes possible.
- the multi-stream information may include video format information corresponding to each of a plurality of display devices. This enables the video signal output device to generate a video stream for each of a plurality of display devices at a resolution and frame rate suitable for each display device.
- a multi-stream receiving unit receives a multi-stream including video streams for each of a plurality of display devices generated based on multi-stream information from the video signal output device. Then, a plurality of video streams are extracted from the multi-stream by the video stream transmission unit, and each of the video streams is transmitted to the corresponding display device among the plurality of display devices.
- each video stream included in the multistream may include stream identification information indicating which display device it corresponds to. This makes it possible to easily know which display device each video stream extracted from the multistream corresponds to.
- performance information is received from each of a plurality of display devices, and multi-stream information is generated based on the performance information of the plurality of display devices and information on the type of multi-display display realized by the plurality of display devices. and transmit it to a video signal output device, receive from the video signal output device a multistream including video streams for each of a plurality of display devices generated based on the multistream information, and receive a plurality of video streams from the multistream , and transmits each of them to a corresponding display device among the plurality of display devices. Therefore, it is possible to supply an appropriate video stream corresponding to the type of multi-display display to each of the plurality of display devices.
- Another concept of this technology is a procedure for receiving performance information from each of a plurality of display devices; a step of generating multi-stream information based on performance information of the plurality of display devices and information on types of multi-display display realized by the plurality of display devices and transmitting the multi-stream information to a video signal output device; receiving, from the video signal output device, a multistream including video streams for each of the plurality of display devices generated based on the multistream information;
- the video signal processing method has a procedure of extracting the plurality of video streams from the multi-stream and transmitting each of the plurality of video streams to corresponding display devices among the plurality of display devices.
- Multi-stream information generated based on performance information of the plurality of display devices and information on types of multi-display display realized by the plurality of display devices is received from a video signal processing device to which a plurality of display devices are connected.
- an information receiving unit for The video signal output device includes a multi-stream transmission unit that generates a multi-stream including video streams for each of the plurality of display devices based on the multi-stream information and transmits the multi-stream to the video signal processing device.
- Another concept of this technology is an information receiving unit that receives performance information from each of the plurality of display devices; generating a video stream for each of the plurality of display devices based on performance information of the plurality of display devices and information on a type of multi-display display realized by the plurality of display devices, and displaying each of the video streams on the plurality of displays;
- a video signal output device comprising a video stream transmission unit for transmitting to a corresponding display device in the device.
- a video signal output device and a plurality of display devices are connected via a video signal processing device,
- the video signal processing device is receiving performance information from each of the plurality of display devices; generating multi-stream information based on performance information of the plurality of display devices and information on types of multi-display display realized by the plurality of display devices, and transmitting the multi-stream information to the video signal output device; receiving from the video signal output device a multistream including video streams for each of the plurality of display devices generated based on the multistream information;
- the multi-display system extracts the plurality of video streams from the multi-stream and transmits each to a corresponding display device among the plurality of display devices.
- FIG. 1 is a block diagram showing a configuration example of a multi-display system
- FIG. 1 is a diagram showing a configuration example of an HDMI system including a data transmission unit (HDMI transmission unit) of a source device and a data reception unit (HDMI reception unit) of a sink device
- FIG. FIG. 4 is a diagram showing an example of link rates and the number of lanes corresponding to each link
- FIG. 10 is a diagram showing a structural example of an EDID extension block as a newly defined information block when using an EDID
- FIG. 10 is a diagram showing a structural example of a newly defined SCDCS information block when using SCDCS data
- FIG. 10 is a diagram showing an example structure of 10-byte “Monitor Location Info” information
- FIG. 1 is a block diagram showing a configuration example of a multi-display system
- FIG. 1 is a diagram showing a configuration example of an HDMI system including a data transmission unit (HDMI transmission unit) of a source device and a data reception unit (
- FIG. 10 is a diagram showing an example of the correspondence relationship between the value of “Type” and the type of multi-display display;
- FIG. 10 is a diagram showing a structure example of information portions of “Type”, “ID”, and “Params” in 10-byte “Monitor Location Info” information when the type of multi-display display is arbitrary arrangement.
- FIG. 10 is a diagram showing a structure example of information portions of “Type”, “ID”, and “Params” in 10-byte “Monitor Location Info” information when the type of multi-display display is preset arrangement.
- FIG. 10 is a diagram showing an example of the correspondence relationship between the value of “Type” and the type of preset arrangement;
- FIG. 4 is a diagram for explaining types of preset arrangement;
- FIG. 4 is a diagram for explaining types of preset arrangement
- FIG. FIG. 10 is a diagram showing an example structure of information portions of “Type”, “ID”, and “Params” in 10-byte “Monitor Location Info” information when the type of multi-display display is planar layout. It is a figure which shows the specific example of planar arrangement.
- FIG. 10 is a diagram showing information of X position and Y position for "ID" 1 to 3;
- FIG. 10 is a diagram showing a structure example of information portions of “Type”, “ID”, and “Params” in 10-byte “Monitor Location Info” information when the type of multi-display display is circumferential surface arrangement.
- FIG. 10 is a diagram showing an example structure of information portions of “Type”, “ID”, and “Params” in 10-byte “Monitor Location Info” information when the type of multi-display display is circumferential surface arrangement.
- FIG. 10 is a diagram showing an arrangement configuration example of display devices when the type of multi-display display is a circumferential surface arrangement
- FIG. 10 is a diagram showing an arrangement configuration example of display devices when the type of multi-display display is a circumferential surface arrangement
- FIG. 10 is a diagram showing information on the screen center angle ⁇ and the occupied viewing angle ⁇ for "ID" 1 to 3
- FIG. 10 is a diagram showing a structure example of information portions of “Type”, “ID”, and “Params” in 10-byte “Monitor Location Info” information when the type of multi-display display is spherical arrangement.
- FIG. 10 is a diagram showing an arrangement configuration example of display devices when the type of multi-display display is a circumferential surface arrangement
- FIG. 10 is a diagram showing an arrangement configuration example of display devices when the type of multi-display display is a circumferential surface arrangement
- FIG. 10 is a diagram showing information on the screen center angle ⁇ and the occupied viewing angle ⁇ for "ID
- FIG. 3 is a diagram conceptually showing a screen horizontal center angle ⁇ , a screen vertical center angle ⁇ , and a horizontal occupied viewing angle ⁇ when a display device is arranged on a spherical surface.
- FIG. 3 is a diagram conceptually showing a screen horizontal center angle ⁇ , a screen vertical center angle ⁇ , and a horizontal occupied viewing angle ⁇ when a display device is arranged on a spherical surface. It is a figure which shows the structural example of an info frame (InfoFrame).
- FIG. 4 is a diagram showing an operation sequence of a multi-display system; 1 is a block diagram showing a configuration example of a video signal output device and a video signal processing device; FIG.
- FIG. 2 is a block diagram showing a configuration example of a display device 200;
- FIG. To explain an example in which the type of multi-display display is a preset layout, and the type of preset layout is a "four-split screen" in which four display devices are arranged horizontally in a square grid shape. is a diagram.
- FIG. 4 is a diagram for explaining “Monitor Location Info” information corresponding to each display device included in multi-stream information generated by a video signal processing device;
- FIG. 10 is a diagram showing a structural example of an EDID extension block containing "Monitor Location Info" information corresponding to four display devices 200;
- FIG. 4 is a diagram showing an example structure of an info frame (InfoFrame) inserted into a video stream for a display device (Sink 1) generated by a video signal output device;
- FIG. 3 is a diagram showing an example structure of an info frame (InfoFrame) inserted into a video stream for a display device (Sink 2) generated by a video signal output device;
- FIG. 4 is a diagram showing an example structure of an info frame (InfoFrame) inserted into a video stream for a display device (Sink 3) generated by a video signal output device;
- FIG. 4 is a diagram showing an example structure of an info frame (InfoFrame) inserted into a video stream for a display device (Sink 4) generated by a video signal output device;
- FIG. 10 is a diagram showing an example of a use case in the case of performing processing to have a relationship with a position where a display device is arranged as audio processing in a video signal output device;
- FIG. 10 is a diagram showing another example of a use case in the case of performing processing to have a relationship with the position where the display device is arranged as audio processing in the video signal output device.
- FIG. 1 shows a configuration example of a multi-display system 10.
- This multi-display system 10 includes a video signal output device (sink device) 100, a plurality of display devices (sink devices) 200, and a video signal processing device ( converter device) 300.
- the video signal output device 100 and the video signal processing device 300 are connected via an HDMI (High-Definition Multimedia Interface) cable 400 .
- the video signal processing device 300 and the plurality of display devices 200 are connected via HDMI cables 500, respectively.
- the HDMI cables 400 and 500 each constitute a transmission line.
- HDMI High-Definition Multimedia Interface
- the video signal output device 100 has one HDMI output terminal (HDMI terminal) 101 .
- the video signal processing device 300 also has one HDMI input terminal (HDMI terminal) 301 and a plurality of HDMI output terminals (HDMI terminals) 302-1 to 302-N.
- the display device 200 also has one HDMI input terminal (HDMI terminal) 201 .
- the HDMI output terminal 101 of the video signal output device 100 is connected to the HDMI input terminal 301 of the video signal processing device 300 via the HDMI cable 400 . Also, the HDMI input terminals 201 of the plurality of display devices 200, 200, . . . are connected to the plurality of HDMI output terminals 302-1, 302-2, . ⁇ It is connected to the.
- FIG. 2 shows a configuration example of an HDMI system including a data transmission unit (HDMI transmission unit) 602 of a source device and a data reception unit (HDMI reception unit) 702 of a sink device.
- HDMI transmission unit data transmission unit
- HDMI reception unit data reception unit
- the data transmission unit 602 transmits an effective image interval (hereinafter also referred to as an active video interval as appropriate), which is an interval from one vertical synchronizing signal to the next vertical synchronizing signal excluding the horizontal blanking interval and the vertical blanking interval. ), a differential signal corresponding to pixel data of an uncompressed image for one screen is unidirectionally transmitted to the data receiving unit 702 through a plurality of channels, and in a horizontal blanking interval or a vertical blanking interval, Differential signals corresponding to at least audio data, control data, and other auxiliary data accompanying images are transmitted unidirectionally to the data receiving unit 702 through a plurality of channels.
- an effective image interval hereinafter also referred to as an active video interval as appropriate
- the data transmission unit 602 has an HDMI transmitter (HDMI Transmitter) 621.
- the HDMI transmitter 621 converts, for example, uncompressed image pixel data into corresponding differential signals, and is connected via the HDMI cable 800 with three TMDS channels #0, #1, #2, which are multiple channels. serially transmitted in one direction to the data receiving unit 702.
- the HDMI transmitter 621 converts the audio data accompanying the uncompressed image, necessary control data and other auxiliary data, etc. into corresponding differential signals, and outputs them to the three TMDS channels #0, #1, .
- the data is serially transmitted in one direction to the data receiving unit 702 connected via the HDMI cable 800 at #2.
- the HDMI transmitter 621 transmits a pixel clock synchronized with the pixel data transmitted by the three TMDS channels #0, #1, and #2 to the data receiver 702 connected via the HDMI cable 800 through the TMDS clock channel.
- 10-bit pixel data is transmitted during one pixel clock.
- TMDS coding is 8-bit/10-bit conversion coding that converts 8-bit data into 10-bit data, and by reducing the number of transition points compared with the previous data, adverse effects such as unnecessary radiation are suppressed.
- the coding maintains the DC balance on the top. Therefore, since the coding run length cannot be theoretically guaranteed, DC coupling and separate transmission of the clock are essential.
- the data receiving section 702 receives differential signals corresponding to pixel data transmitted unidirectionally from the data transmitting section 602 through a plurality of channels during the active video period, In the section, differential signals corresponding to voice data and control data transmitted in one direction from the data transmission unit 602 are received in a plurality of channels.
- the data receiving unit 702 has an HDMI receiver (HDMI Receiver) 721 .
- the HDMI receiver 721 receives differential signals corresponding to pixel data transmitted in one direction from the data transmission unit 602 connected via the HDMI cable 800 on TMDS channels #0, #1, and #2, Differential signals corresponding to audio data and control data are also received in synchronization with the pixel clock transmitted from the data transmission section 602 through the TMDS clock channel.
- the TMDS channels #0, #1, and #2 transmit image data, audio data, and control data
- the TMDS clock channel transmits the pixel clock. and HDMI 2.0 compatible.
- transmission using FRL lanes #0, #1, #2, and #3 is performed.
- the TMDS clock channel in FIG. 2 would be FRL lane #3.
- FRL Character coding is 16-bit/18-bit conversion coding that converts 16-bit data to 18-bit data, is coding that maintains DC balance, and is capable of clock extraction. is.
- FIG. 3 shows an example of link rates and the number of lanes corresponding to each link.
- link rates identified by "1" (binary 0001) and “2" (binary 0010) three lanes #0 to #2 of the four lanes #0 to #3 are used. In this case, lane #3 becomes an inactive lane.
- the active lane means a lane that transmits data.
- link rates identified by "3" (binary 0011), "4" (binary 0100), "5" (binary 0101) and “6” (binary 0110) four lanes #0 to #3 make use of everything.
- the bit rate per lane is 3 Gbps at the link rate identified by "1" (binary 0001). Also, for link rates identified by "2" (binary 0010) and “3" (binary 0011), the bit rate per lane is 6 Gbps. Also, at the link rate identified by "4" (binary 0100), the bit rate per lane is 8 Gbps. Also, at the link rate identified by "5" (binary 0101), the bit rate per lane is 10 Gbps. Further, for link rates identified as "6" (binary 0110), the bit rate per lane is 12 Gbps.
- the transmission channel of the HDMI system composed of the data transmission unit 602 of the source device and the data reception unit 702 of the sink device includes a transmission channel called DDC (Display Data Channel).
- the DDC is composed of two signal lines (not shown) included in the HDMI cable 800 and performs IIC (Inter-Integrated Circuit) communication between the data transmission section 602 and the data reception section 702 .
- the data transmission unit 602 has an IIC master block 622.
- the data receiving section 702 also has a memory section 722 .
- the memory unit 722 includes an EDID ROM (Extended Display Identification Data ROM) 731, an SCDC (Status and Control Data Channel) register unit 732, and the like.
- an EDID which is information about the configuration and possible functions (Configuration/capability) of the sink device, is set and read by the IIC master block 622 through the DDC to the source device side. This allows the source device to know the configuration and possible capabilities of the sink device.
- the EDID ROM 731 is realized by, for example, a rewritable memory such as an EEPROM (Electrically Erasable Programmable Read-Only Memory) or flash memory, but it can also be realized by a RAM (Random Access Memory) or any other storage medium. Also, the above EDID is sometimes called Enhanced-EDID (E-EDID).
- SCDC Status and Control Data Channel
- SCDC corresponds to a point-to-point communication protocol in which data is exchanged between a source device and a sink device.
- This SCDC is defined after HDMI 2.0.
- the SCDC register section 732 consists of a group of registers that store SCDCS (SCDC Structure).
- the source device can read and write SCDCS data stored in the SCDC register unit 732 by the IIC master block 622 through the DDC.
- the SCDCS data includes data regarding the current link status, data controlling the operation of the source device, and the like.
- the HDMI cable 800 includes a CEC (Consumer Electronics Control) line, an HPD (Hot Plug Detect) line, a reserve line, a power supply line, and the like.
- the CEC line is used for two-way communication of control data between the source device and the sink device.
- the HPD line is used, for example, by the source device to detect connection of the sink device.
- the multiple display devices 200 connected to the video processing device 300 constitute a multi-display.
- the number of display devices 200 and their arrangement state correspond to the type of multi-display display.
- the types of multi-display display include arbitrary layout, preset layout, planar layout, circumferential surface layout, spherical layout, and the like.
- arbitrarily arranged means that the screens of the plurality of display devices 200 are independent and have no relationship.
- the preset layout means that the layout of the screens composed of the plurality of display devices 200 is a preset screen layout.
- planar arrangement means that when screens configured by a plurality of display devices 200 are combined to create a single flat screen, constituent elements such as the size of each screen can be freely set.
- Circumferential surface arrangement means a case where a plurality of display devices 200 are arranged on a circumferential surface to create a panoramic screen.
- the spherical arrangement means a case where a plurality of display devices 200 are arranged on a spherical surface to create a celestial screen.
- the video signal processing device 300 receives capability information from each of the plurality of display devices 200 .
- This performance information is sent from the display device 200 to the video signal processing device 300 using EDID.
- This performance information also includes information such as resolution and frame rate.
- the video signal processing device 300 generates multi-stream information based on performance information sent from the plurality of display devices 200 and information on the type of multi-display display realized by the plurality of display devices 200. and transmits it to the video signal output device 100 .
- This multi-stream information includes information on the type of multi-display display, information on the HDMI output terminal of the video signal processing device 300 to which the display device 200 is connected corresponding to each of the plurality of display devices 200, and information on the display.
- Information on the arrangement position in the multi-display display of the device 200, generation information of the video stream for the display device 200, and the like are included.
- the type of multi-display display is set by user operation, for example.
- the user arranges the required number of display devices 200 in predetermined positions according to the type of multi-display display to be realized, connects each of them to the video signal processing device 300, and connects them to the video signal processing device 300.
- the video signal processing device 300 has a correspondence relationship between each HDMI output terminal to which a plurality of display devices 200 are connected and the arrangement position in the multi-display display of the display device 200 connected to the HDMI output terminal. have information on This correspondence relationship is such that when a video stream is transmitted from the video signal processing device 300 to each of the plurality of display devices 200, each display device 200 receives a video stream corresponding to the arrangement position of the display device 200 in the multi-display display. Required for correct transmission. Although the detailed description is omitted, this correspondence relationship is set by, for example, user operation or other methods.
- the video signal processing device 300 sends the multi-stream information to the video signal output device 100 using EDID or SCDCS data.
- FIG. 4 shows a structural example of an EDID extension block as a newly defined information block when using EDID.
- the 0th byte (BP0) and the 1st byte constitute a header.
- 1-byte "Number of Monitors" information is placed in the second byte. This information indicates the number N of display devices 200 that constitute the multi-display.
- “MonitorLocInfo[]” information of N*10 bytes is placed from the 3rd byte to the (3+N*10-1)th byte. 10-byte information of "Monitor Location Info” corresponding to each of the N display devices 200 is arranged in the information of "MonitorLocInfo[]".
- This "Monitor Location Info” information includes video format information, multi-display display type information, arrangement position information in multi-display display, information on connected HDMI output terminals, information for generating video streams, etc. included.
- 1-byte “Checksum” information is arranged in the 127th byte.
- FIG. 5 shows an example structure of a newly defined SCDCS information block when using SCDCS data.
- 1-byte "Number of Monitors” information is located at the byte of offset 0x5B.
- N*10 bytes of "MonitorLocInfo[]” information are arranged in bytes from offset 0x5C to (0x5B+N*10).
- Fig. 6 shows an example structure of 10-byte "Monitor Location Info” information.
- 1-byte "VideoMode (VIC)” information is placed in the 0th byte.
- This information is VIC (Video Identification Code), for example, and indicates the video format such as the resolution and frame rate handled by the target display device 200 .
- the video signal output device 100 identifies the format of the video stream based on this information when generating the video stream for the target display device 200 .
- Type information is located in the first byte. This information indicates the type of multi-display display.
- FIG. 7 shows an example of the correspondence between the value of "Type” and the type of multi-display display.
- "250” indicates that the type of multi-display display is planar layout. Also, “252” indicates that the type of multi-display display is circumferential surface arrangement. Also, “254" indicates that the type of multi-display display is spherical arrangement.
- ID information is arranged in the second byte. This information indicates the identifier of the arrangement position in the multi-display display of the target display device 200 .
- the correspondence relationship between the arrangement positions of the plurality of display devices 200 and their identifiers in the multi-display display is set in advance.
- "Params” information is located in the 3rd to 8th bytes. This information indicates information for generating a video stream for the target display device 200, and differs depending on the value of "Type", that is, the type of multi-display display.
- StreamID information is located in the 9th byte. This information corresponds to the HDMI output terminal of the video signal processing device 300 to which the target display device 200 is connected, and indicates the identifier of the video stream for the target display device 200 .
- the screens of the plurality of display devices 200 may display images of different applications, images of different contents, or images of different channels. Note that even when different images are displayed on the screens of a plurality of display devices 200, specifying the display position of each image corresponds to the preset arrangement.
- Figure 8 shows an example of the structure of the information part of "Type", “ID”, and “Params” in the 10-byte “Monitor Location Info” information (see Figure 6) when the type of multi-display display is arbitrary arrangement. showing.
- the value of "Type” of the first byte is “0”, indicating that the type of multi-display display is arbitrary arrangement.
- the arrangement positions of the plurality of display devices 200 are arbitrary, and the information of the second byte "ID” has no particular meaning.
- this preset layout means that the layout of the screens composed of the plurality of display devices 200 is a preset screen layout.
- a stereoscopic image may be generated by transmitting a standard planar arrangement pattern or right-eye and left-eye information in separate image streams.
- Figure 9 shows an example of the structure of the information part of "Type", “ID”, and “Params” in the 10-byte “Monitor Location Info” information (see Figure 6) when the type of multi-display display is the preset layout. showing.
- the value of "Type” in the first byte is one of "1 to 249" depending on the type of preset arrangement.
- the second byte “ID” indicates the arrangement position in the multi-display display of the target display device 200 .
- FIG. 10 shows an example of the correspondence between the "Type” value and the type of preset arrangement.
- “20” indicates that the type of preset layout is “two screens horizontal” in which two display devices 200 are horizontally arranged side by side as shown in FIG. 11(a). ing.
- the identifier "ID" of the arrangement position of the two display devices 200 is defined as “1" for the left and “2" for the right, for example, as shown in the figure.
- "21” indicates that the type of preset arrangement is "two screens horizontal v" in which two display devices 200 are vertically arranged side by side in the horizontal direction as shown in FIG. 11(b). indicates that there is Here, “v” indicates that the display device 200 is vertically placed. This also applies to the following.
- the identifier "ID" of the arrangement position of the two display devices 200 is defined as “1" for the left and “2" for the right, for example, as shown in the figure.
- "22” indicates that the type of preset arrangement is "two screens vertical” in which two display devices 200 are horizontally arranged and vertically arranged as shown in FIG. 11(c). It is shown that.
- the identifier "ID" of the arrangement position of the two display devices 200 is defined as “1" at the bottom and “2" at the top, as shown in the drawing.
- "30” indicates that the type of preset arrangement is "three screens horizontal” in which three display devices 200 are horizontally arranged and arranged horizontally, as shown in FIG. 11(e). It is shown that.
- the identifiers “ID” of the arrangement positions of the three display devices 200 are defined as “1” for the left, “2” for the center, and “3” for the right, as shown in the drawing.
- "31” indicates that the type of preset layout is "three screens horizontal v" in which three display devices 200 are vertically arranged and horizontally arranged as shown in FIG. 11(f). indicates that there is In this case, the identifiers “ID” of the arrangement positions of the three display devices 200 are defined as “1” for the left, “2” for the center, and “3” for the right, as shown in the drawing.
- "32” indicates that the type of preset layout is "three screens vertical” in which three display devices 200 are horizontally arranged and vertically arranged as shown in FIG. 11(g). It is shown that.
- the identifiers "ID" of the arrangement positions of the three display devices 200 are defined as, for example, "1" at the bottom, "2" at the center, and "3" at the top, as shown in the drawing.
- "40” indicates that the type of preset arrangement is "four screen projections” in which four display devices 200 are arranged horizontally in a convex shape as shown in FIG. 12(a). indicates that there is In this case, the identifiers "ID" of the arrangement positions of the four display devices 200 are, for example, "1" at the bottom center, "2" at the bottom right, “3” at the bottom left, and "4" at the top, as shown in the figure. is defined as
- "41” is a type of preset layout "4 screen convex v" in which four display devices 200 are arranged vertically in a convex shape as shown in FIG. 12(b). It shows that In this case, the identifiers "ID" of the arrangement positions of the four display devices 200 are, for example, "1" at the bottom center, "2" at the bottom right, “3” at the bottom left, and "4" at the top, as shown in the figure. is defined as
- "42” indicates that the type of preset arrangement is a "four-split screen" in which four display devices 200 are horizontally arranged and arranged in a square grid shape, as shown in FIG. 12(c). indicates that there is In this case, the identifiers “ID” of the arrangement positions of the four display devices 200 are defined as “1” at the upper left, “2” at the upper right, “3” at the lower left, and “4” at the lower right, as shown in the figure. be done.
- "43” is a type of preset layout, as shown in FIG. 12(d), "four split screen v” in which four display devices 200 are arranged vertically in a square grid shape. It shows that In this case, the identifiers “ID” of the arrangement positions of the four display devices 200 are defined as “1” at the upper left, “2” at the upper right, “3” at the lower left, and “4” at the lower right, as shown in the figure. be done.
- identifier "ID" of the arrangement position of the two display devices 200 is defined as “1" for the left eye and “2" for the right eye.
- FIG. 10 shows the types of preset layouts for up to four display devices 200, the types of preset layouts are not limited to this, and a detailed description thereof will be omitted. Types of preset arrangements made up of other numbers of display devices 200 are also conceivable.
- this planar arrangement is used when combining screens composed of a plurality of display devices 200 to create a single planar screen, and when constituent elements such as the size of each screen can be freely set. means.
- the screen sizes and resolutions of the plurality of display devices 200 can be freely set, and the information is arranged in the information portion of "Params".
- Figure 13 shows an example structure of the information part of "Type", "ID”, and “Params” in the 10-byte “Monitor Location Info” information (see Figure 6) when the type of multi-display display is flat layout. showing.
- the value of "Type” of the first byte is "250", indicating that the type of multi-display display is planar layout.
- FIG. 14 shows a specific example of planar arrangement.
- This example is an example of creating one flat screen by combining one 4KUHD screen and two 2KHD screens that are half the size of the 4KUHD screen.
- the main information and two sub-information may be displayed at the same time.
- the main screen it is conceivable to use the main screen to display live sports video, one sub-screen to display video from another camera, and the other sub-screen to display player data information.
- FIG. 15 shows the X position and Y position information for "ID" 1 to 3 in the specific example of the planar layout of FIG.
- the X position and Y position for "ID" of 2 and 3 are calculated by shifting the position of the 4K image from the coordinate position on the upper left of the screen for "ID" of 1. Also, if there is a frame portion between the screens where the video is not displayed, the number of pixels of the frame portion is added as a margin.
- parenthesized numerical values are UHD: 200.
- HD Shows the X position and Y position when creating a margin of 100.
- this circumferential surface arrangement means the case where a plurality of display devices 200 are arranged on the circumferential surface to create a panoramic screen.
- Fig. 16 shows the structure of the information part of "Type", “ID”, and “Params” in the 10-byte “Monitor Location Info” information (see Fig. 6) when the type of multi-display display is circumferential surface arrangement. shows an example.
- the value of "Type” in the first byte is "252", indicating that the type of multi-display display is circumferential surface arrangement.
- a plurality of display devices 200 are used to create a circumferential surface to create a panoramic screen.
- the screen center angle ⁇ at each display position 200 is the deviation angle of the screen formed by the display device 200 from the center screen.
- the occupied viewing angle ⁇ of each display device 200 indicates the horizontal viewing angle of the screen formed by the display device.
- FIG. 17 and 18 show an arrangement configuration example of the display device 200 when the type of multi-display display is the circumferential surface arrangement.
- three display devices 200 are arranged along the circumferential surface.
- nine display devices 200 can express 360 degrees of the circumferential surface, and three display devices 200 are actually arranged along the circumferential surface.
- the screen formed by each display device 200 can display a viewing angle of 40 degrees.
- FIG. 19 shows information of the screen center angle ⁇ and the occupied viewing angle ⁇ for “ID” 1 to 3 in the circumferential surface arrangement examples of FIGS. 17 and 18 .
- This circular surface arrangement can be used for games that use panoramic screens, such as racing games.
- the display device 200 placed in the center displays the front image
- the two display devices 200 placed on the left and right display the images of the fields of view shifted to the left and right from the center.
- This spherical arrangement means the case where a plurality of display devices 200 are arranged on a spherical surface to create a celestial screen, as described above.
- Fig. 20 shows an example structure of the information part of "Type", "ID”, and “Params” in the 10-byte “Monitor Location Info” information (see Fig. 6) when the type of multi-display display is spherical arrangement. showing.
- the value of "Type” of the first byte is "254", indicating that the type of multi-display display is spherical arrangement.
- ID in the second byte indicates the arrangement position in the multi-display display of the target display device 200.
- the information of the screen horizontal center angle ⁇ is arranged in the 2nd to 3rd bytes, and the screen vertical center angle is arranged in the 4th to 5th bytes.
- Information on the angle ⁇ is arranged, and information on the laterally occupied viewing angle ⁇ is arranged in the sixth to seventh bytes.
- the vertical occupied viewing angle can be obtained by multiplying the horizontal occupied viewing angle ⁇ by 9/16 because the aspect ratio of the screen of the display device 200 is 16:9. It is also conceivable to arrange the vertical occupied viewing angle instead of the horizontal occupied viewing angle ⁇ in the information portion of “Params” of the 2nd to 7th bytes. 21 and 22 conceptually show the screen horizontal center angle ⁇ , the screen vertical center angle ⁇ , and the horizontal occupied viewing angle ⁇ when the display device 200 is arranged on a spherical surface.
- this spherical arrangement can be developed into an entertainment display system that reproduces video content in the shape of a celestial sphere.
- the video signal output device 100 generates video streams for each of the plurality of display devices 200 based on the multi-stream information received from the video signal processing device 300 .
- the video stream for each of the plurality of display devices 200 corresponds to the type of multi-display display indicated by the multi-stream information, and is generated in the video format handled by each display device 200.
- the video signal output device 100 then generates a multistream including video streams for each of the plurality of display devices 200 and transmits the multistream to the video signal processing device 300 .
- the video signal output device 100 transmits this multi-stream to the video signal processing device 300 using, for example, an FRL (Fixed Rate Link) packet structure.
- FRL Fixed Rate Link
- identifiers necessary for identifying a plurality of video streams are newly defined. As a specific example, if a 4-bit identifier is defined in the Reserved area of the Map Type of FRL, it is possible to multiplex up to 16 streams.
- each video stream included in the multistream includes information indicating which display device 200 the video stream corresponds to. This information is inserted into the video stream using, for example, InfoFrame or EMP (Extended Metadata Packet).
- FIG. 23 shows an example structure of an InfoFrame.
- the 1st to 3rd bytes are the header portion of the infoframe, in which the infoframe type, version number, and data byte length information are arranged.
- the 3rd byte to the 11th byte are the data byte portion of the info frame, in which 9 bytes of "Monitor Location Info" information are arranged.
- Type information is located in the third byte.
- Information of "ID” is arranged in the fourth byte.
- "Params” information is arranged in the 5th to 10th bytes.
- Information of "StreamID” is arranged in the 11th byte. Although detailed explanation is omitted, each of these pieces of information is the information of "Monitor Location Info" (see FIG. 6) that constitutes the multi-stream information sent from the video signal processing device 300 to the video signal output device 100 as described above. is the same as the information contained in
- the "StreamID" information corresponds to the HDMI output terminal of the video signal processing device 300 to which the target display device 200 is connected. 200.
- the video signal processing device 300 extracts a plurality of video streams from the multistream sent from the video signal output device 100 and transmits each to the corresponding display device 200 among the plurality of display devices 200. do.
- each video stream is sent to the corresponding display device 200 by being output to the HDMI output terminal corresponding to "StreamID" in the infoframe (InfoFrame) inserted therein.
- the plurality of display devices 200 each display video based on the video stream sent from the video signal processing device 300 .
- the multiple display devices 200 perform multi-display display of the type set by the video signal processing device 300 .
- FIG. 24 shows the operation sequence of the multi-display system 10 shown in FIG.
- the video signal processing device 300 acquires capability information from each of the plurality of display devices 200 .
- the video signal processing device 300 reads the EDID including the performance information through the DDC line as the HPD signal changes from low to high when the display device 200 is connected.
- multi-stream Generate information is generated as EDID or SCDCS data. That is, an EDID extension block containing multi-stream information (see FIG. 4) or an information block of SCDCS data containing multi-stream information (see FIG. 5) is generated.
- the video signal output device 100 acquires multi-stream information from the video signal processing device 300 .
- the video signal output device 100 When the video signal processing device 300 generates an EDID extension block containing multi-stream information, the video signal output device 100 generates the EDID extension block as the HPD signal changes from low to high. Read its EDID extension block through the DDC line.
- the video signal output device 100 receives a Read request from the video signal processing device 300 after generating the information block of the SCDCS data. is issued, read the information block of the SCDCS data through the DDC line.
- the video signal output device 100 generates video streams for each of the plurality of display devices 200 based on the multi-stream information.
- the video stream for each of the plurality of display devices 200 corresponds to the type of multi-display display indicated by the multi-stream information, and is generated in the video format handled by each display device 200.
- Information indicating which display device 200 the video stream corresponds to, for example, "StreamID" information is inserted into each video stream. This information is inserted using, for example, an infoframe (see FIG. 23).
- the video signal output device 100 generates a multistream including video streams for each of the plurality of display devices 200 and transmits the multistream to the video signal processing device 300 .
- the video signal output device 100 transmits this multistream to the video signal processing device 300 using, for example, the FRL packet structure.
- the video signal processing device 300 extracts video streams for each of the plurality of display devices 200 from the multistream.
- the video signal processing device 300 transmits the plurality of video streams extracted from the multistream to the corresponding display devices 200 respectively.
- each video stream is sent to the corresponding display device 200 by being output to the HDMI output terminal corresponding to "StreamID" in the info frame, for example.
- each of the display devices 200 displays video based on the video stream sent from the video signal processing device 300 .
- the multiple display devices 200 perform multi-display display of the type set by the video signal processing device 300 .
- FIG. 25 shows a configuration example of the video signal output device 100 and the video signal processing device 300.
- the video signal processing device 300 has four HDMI output terminals 302-1 to 302-4, to which the display device 200 is connected. Note that even when four HDMI output terminals 302-1 to 302-4 are provided, the display device 200 may not be connected to all of them depending on the type of multi-display display.
- the video signal processing device 100 has an HDMI output terminal 101 , an HDMI transmission section (HDMI Tx) 102 , a control section 103 , a signal source 104 , a decoding section 105 and an information transmission section 106 .
- the video signal processing device 300 also includes an HDMI input terminal 301, an HDMI receiving section (HDMI Rx) 303, four HDMI output terminals 302-1 to 302-4, and four HDMI transmitting sections (HDMI Tx) 304- 1 to 304-4, a control section 305, a signal processing section 306, and a selection section 307.
- HDMI Rx HDMI receiving section
- HDMI Tx HDMI transmitting sections
- the control unit 305 of the video signal processing device 300 performs multi-streaming based on the capability information of each display device 200 and the type of multi-display display acquired through the HDMI transmission units (HDMI Tx) 304-1 to 304-4. Information is generated, and an EDID extension block (see FIG. 4) containing this multi-stream information or an SCDCS data information block (see FIG. 5) containing multi-stream information is generated.
- HDMI transmission units HDMI Tx
- SCDCS data information block see FIG. 5
- the control unit 305 of the video signal output device 100 reads an EDID extension block containing multi-stream information or an information block of SCDCS data from the video signal processing device 300 through the HDMI transmission unit (HDMI Tx) 102 to acquire multi-stream information.
- HDMI transmission unit (HDMI Tx) 102 HDMI transmission unit
- the video signal output device 100 Under the control of the control unit 103, the video signal output device 100 generates video streams for the four display devices 200 based on the multi-stream information, and transmits the multi-stream including these video streams to the HDMI transmission unit. (HDMI Tx) 102 to the video signal processing device 300 .
- HDMI transmission unit HDMI Tx
- compressed data corresponding to the type of multi-display display is read from the signal source 104 , decoded by the decoding unit 105 and supplied to the information transmission unit 106 .
- the information transmission unit 106 generates video streams for the four display devices 200 based on the multi-stream information.
- an info frame including information indicating which display device 200 the video stream corresponds to, for example, "StreamID" information is inserted into each video stream.
- the information transmission unit 106 generates a multi-stream including video streams for the four display devices 200, and this multi-stream is transmitted to the video signal processing device 300 via the HDMI transmission unit (HDMI Tx) 102.
- HDMI transmission unit (HDMI Tx) 102 HDMI transmission unit
- the video signal processing device 300 Under the control of the control unit 305, the video signal processing device 300 extracts video streams for the four display devices 200 from the multistream received by the HDMI receiving unit 303, and transmits the video streams to the corresponding display devices 200 respectively.
- the multistream received by the HDMI receiving unit 303 is supplied to the signal processing unit 306, and video streams for the four display devices 200 are extracted from this multistream.
- Each video stream extracted by the signal processing unit 306 is sent to the selection unit 307 .
- the selection unit 307 outputs each video stream to the HDMI output terminal corresponding to the “StreamID” in the infoframe, and thus transmits to the corresponding display device 200 .
- FIG. 26 shows a configuration example of the display device 200.
- the display device 200 has an HDMI input terminal 201 , an HDMI receiving section (HDMI Rx) 202 , a control section 203 , a signal processing section 204 and a display section 205 .
- HDMI Rx HDMI receiving section
- control section 203 control section
- signal processing section 204 signal processing section
- display section 205 display section
- the control unit 203 controls the operation of each unit of the display device 200 .
- a video stream received by the HDMI receiving unit 202 from the video signal processing device 300 is sent to the signal processing unit 204 .
- processing such as scaling and contour enhancement is performed on the video stream to obtain a display video signal.
- the display unit 205 performs video display based on the display video signal obtained by the signal processing unit 204 .
- the display unit 205 is composed of, for example, an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), or the like.
- the type of multi-display display is a preset layout
- the type of preset layout is four display devices 200 arranged horizontally in a square grid shape.
- An example of a "four-split screen" (see FIG. 10) will be described.
- FIG. 27(b) shows the value of the identifier ID of each layout position of the four display devices 200 whose preset layout type is "4-split screen" and which are laid out in a square grid pattern.
- a display device (Sink 3) 200 placed at the position is connected.
- the "Monitor Location Info" information corresponding to each display device 200 included in the multi-stream information generated by the video signal processing device 300 is as shown in FIG.
- VideoMode VIC118
- VCMOS complementary metal-oxide-semiconductor
- VOC118 is an example and is not limited to this.
- FIG. 29 shows a structural example of an EDID extension block containing "Monitor Location Info" information corresponding to the four display devices 200 in FIG.
- FIG. 30 shows an example structure of an info frame (InfoFrame) inserted into a video stream generated by the video signal output device 100 for the display device (Sink 1) 200.
- this video stream is displayed at the position of "3" in the multi-display display of "4-split screen". It becomes possible to confirm that the video stream is intended for the device 200 .
- FIG. 31 shows an example structure of an info frame (InfoFrame) inserted into a video stream generated by the video signal output device 100 for the display device (Sink 2) 200.
- FIG. 32 shows an example structure of an info frame (InfoFrame) inserted into a video stream generated by the video signal output device 100 for the display device (Sink 3) 200.
- info frame InfoFrame
- FIG. 33 shows an example structure of an info frame (InfoFrame) inserted into a video stream generated by the video signal output device 100 for the display device (Sink 4) 200.
- Audio processing during multi-stream transmission Audio processing during multi-stream transmission will be described.
- the audio processing includes (1) independent processing without association with the position where the display device 200 that reproduces the audio is arranged, and (2) display that reproduces the audio in the same manner as video. Both processes that relate to the location where the device 200 is located are possible.
- the plurality of display devices 200 constituting the multi-display system 10
- One of the display devices 200 selected by the user outputs audio.
- the multi-display system 10 is configured. The display device 200 that receives the one audio out of the plurality of display devices 200 outputs the audio.
- each of the plurality of display devices 200 that constitute the multi-display system 10 outputs audio sent together with the video stream from its own speaker.
- the sound (sound) generated by the target object displayed on the screen of each display device 200 comes out.
- FIG. 34 shows an image diagram of a use case.
- nine display devices 200 are arranged in a grid pattern, and each display device 200 has a speaker 220 for outputting sound.
- the speaker 220 of the display device 200 outputs the sound of the volcano.
- the sound of the dinosaur is output from the speaker 220 of the display device 200 .
- FIG. 35 shows an image diagram of another use case.
- nine display devices 200 are arranged in a grid pattern, and each display device 200 has a speaker 220 for outputting sound.
- the video signal processing device 300 receives performance information from each of the plurality of display devices 200, multi-stream information is generated based on the information of the type of multi-display display realized by and is transmitted to the video signal output device 100, and from the video signal output device 100, a plurality of display devices generated based on the multi-stream information 200 , extracts multiple video streams from the multistream and transmits each to a corresponding one of the multiple display devices 200 . Therefore, an appropriate video stream corresponding to the type of multi-display display can be supplied to each of the plurality of display devices 200, and multi-display display corresponding to the type of multi-display display can be satisfactorily realized.
- the video signal output device receives performance information from each of the plurality of display devices, and based on the performance information of the plurality of display devices and information on the type of multi-display display realized by the plurality of display devices, displays a plurality of It is configured to generate a video stream for each of the display devices and send each to a corresponding display device of the plurality of display devices.
- the present technology can also have the following configuration.
- an information receiving unit that receives performance information from each of a plurality of display devices; an information transmission unit that generates multi-stream information based on performance information of the plurality of display devices and information on types of multi-display display realized by the plurality of display devices and transmits the multi-stream information to a video signal output device; a multi-stream receiving unit for receiving a multi-stream including video streams for each of the plurality of display devices generated based on the multi-stream information from the video signal output device;
- a video signal processing apparatus comprising a video stream transmission unit that extracts the plurality of video streams from the multistream and transmits each of the plurality of video streams to corresponding display devices among the plurality of display devices.
- the type of multi-display display includes at least one of an arbitrary layout, a preset layout, a planar layout, a circumferential layout, and a spherical layout.
- the multi-stream information includes information on the number of the plurality of display devices and information on the type of multi-display display.
- the multi-stream information includes stream identification information and arrangement position information corresponding to each of the plurality of display devices.
- the type of multi-display display is a planar layout
- the multi-stream information includes information on the pixel position of the upper left corner of the screen corresponding to each of the plurality of display devices.
- the multi-stream information includes information on the screen center angle and information on the occupied viewing angle corresponding to each of the plurality of display devices.
- the multi-stream information includes information on the center angle in the horizontal direction of the screen, information on the center angle in the vertical direction of the screen, corresponding to each of the plurality of display devices. and the information of the horizontal or vertical occupied viewing angle.
- each video stream included in the multistream includes stream identification information indicating which display device it corresponds to.
- (10) a procedure for receiving performance information from each of a plurality of display devices; a step of generating multi-stream information based on performance information of the plurality of display devices and information on types of multi-display display realized by the plurality of display devices and transmitting the multi-stream information to a video signal output device; receiving, from the video signal output device, a multistream including video streams for each of the plurality of display devices generated based on the multistream information;
- a video signal processing method comprising extracting the plurality of video streams from the multistream and transmitting each of the plurality of video streams to a corresponding display device among the plurality of display devices.
- a video signal output device comprising a multi-stream transmission unit that generates a multi-stream including video streams for each of the plurality of display devices based on the multi-stream information and transmits the multi-stream to the video signal processing device.
- an information receiving unit that receives performance information from each of a plurality of display devices; generating a video stream for each of the plurality of display devices based on performance information of the plurality of display devices and information on a type of multi-display display realized by the plurality of display devices, and displaying each of the video streams on the plurality of displays;
- a video signal output device comprising a video stream transmitter for transmission to a corresponding display device in the device.
- a video signal output device and a plurality of display devices are connected via a video signal processing device,
- the video signal processing device is receiving performance information from each of the plurality of display devices; generating multi-stream information based on performance information of the plurality of display devices and information on types of multi-display display realized by the plurality of display devices, and transmitting the multi-stream information to the video signal output device; receiving from the video signal output device a multistream including video streams for each of the plurality of display devices generated based on the multistream information;
- a multi-display system for retrieving the plurality of video streams from the multi-stream and transmitting each to a corresponding one of the plurality of display devices.
- Multi-display system 100 Video signal output device (source device) DESCRIPTION OF SYMBOLS 101... HDMI output terminal 102... HDMI transmission part 103... Control part 104... Signal source 105... Decoding part 106... Information transmission part 200... Display apparatus (sink apparatus) 201...HDMI input terminal 202...HDMI receiving unit 203...control unit 204...signal processing unit 205...display unit 300...video signal processing device (converter device) 301 HDMI input terminal 302-1 to 302-N HDMI output terminal 303 HDMI receiver 304-1 to 304-4 HDMI transmitter 305 controller 306 Signal processing unit 307 Selection unit 400, 500 HDMI cable 602 Data transmission unit (HDMI transmission unit) of source device 621... HDMI transmitter 622... IIC master block 702... Data receiving unit (HDMI receiving unit) of sink device 721...HDMI receiver 722...memory section 731...EDID ROM 732 SCDC register unit 800 HDMI cable
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Abstract
Description
複数の表示装置からそれぞれの性能情報を受信する情報受信部と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して映像信号出力装置に送信する情報送信部と、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信するマルチストリーム受信部と、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する映像ストリーム送信部を備える
映像信号処理装置にある。
複数の表示装置からそれぞれの性能情報を受信する手順と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して映像信号出力装置に送信する手順と、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信する手順と、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する手順を有する
映像信号処理方法にある。
複数の表示装置が接続された映像信号処理装置から、前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいて生成されたマルチストリーム情報を受信する情報受信部と、
前記マルチストリーム情報に基づいて前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを生成して前記映像信号処理装置に送信するマルチストリーム送信部を備える
映像信号出力装置にある。
複数の表示装置からそれぞれの性能情報を受信する情報受信部と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいて前記複数の表示装置のそれぞれのための映像ストリームを生成してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する映像ストリーム送信部を備える
映像信号出力装置にある。
映像信号出力装置と複数の表示装置が映像信号処理装置を介して接続されて構成され、
前記映像信号処理装置は、
前記複数の表示装置からそれぞれの性能情報を受信し、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して前記映像信号出力装置に送信し、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信し、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する
マルチディスプレイシステムにある。
1.実施の形態
2.変形例
[マルチディスプレイシステムの構成例]
図1は、マルチディスプレイシステム10の構成例を示している。このマルチディスプレイシステム10は、映像信号出力装置(シンク機器)100と、複数の表示装置(シンク機器)200と、映像信号出力装置100とシンク機器200との間に介在された映像信号処理装置(コンバータ機器)300を有している。
図2は、ソース機器のデータ送信部(HDMI送信部)602とシンク機器のデータ受信部(HDMI受信部)702で構成されるHDMIシステムの構成例を示している。
図25は、映像信号出力装置100および映像信号処理装置300の構成例を示している。この例では、映像信号処理装置300が4つのHDMI出端子302-1~302-4を備え、それぞれに表示装置200が接続されている。なお、4つのHDMI出端子302-1~302-4を備えている場合であっても、マルチディスプレイ表示の種類によっては、その全てに表示装置200が接続されない場合もある。
マルチディスプレイ表示の具体例におけるマルチストリーム情報等の詳細について説明する。ここでは、図27(a)に示すように、マルチディスプレイ表示の種類がプリセット配置であって、そのプリセット配置の種類が4台の表示装置200がそれぞれ横置きの状態で田の字状に配置された「4分割画面」(図10参照)である例について説明する。図27(b)は、プリセット配置の種類が「4分割画面」であって田の字状に配置される4台の表示装置200のそれぞれの配置位置の識別子IDの値を示している。
マルチストリーム伝送時の音声処理について説明する。この場合の音声処理としては、(1)その音声を再生する表示装置200が配置される位置と関連性を持たせないで独立して処理、(2)映像と同様にその音声を再生する表示装置200が配置される位置と関連性を持たせる処理、のどちらも可能である。
なお、上述実施の形態においては、映像信号出力装置100と、映像信号処理装置300と、複数の表示装置200で構成されるマルチディスプレイシステム10の例を示した。しかし、このマルチディスプレイシステム10と同様にマルチディスプレイ表示の種類に応じたマルチディスプレイ表示を良好に実現できるマルチディスプレイシステムを、映像信号出力装置と複数の表示装置で構成することも考えられる。
(1)複数の表示装置からそれぞれの性能情報を受信する情報受信部と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して映像信号出力装置に送信する情報送信部と、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信するマルチストリーム受信部と、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する映像ストリーム送信部を備える
映像信号処理装置。
(2)前記マルチディスプレイ表示の種類は、任意配置、プリセット配置、平面配置、円周面配置または球面配置の少なくともいずれかを含む
前記(1)に記載の映像信号処理装置。
(3)前記マルチストリーム情報は、前記複数の表示装置の個数の情報と前記マルチディスプレイ表示の種類の情報を含む
前記(1)または(2)に記載の映像信号処理装置。
(4)前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、ストリーム識別情報と配置位置情報を含む
前記(3)に記載の映像信号処理装置。
(5)前記マルチディスプレイ表示の種類が平面配置である場合、前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、画面左上端のピクセル位置の情報を含む
前記(3)または(4)に記載の映像信号処理装置。
(6)前記マルチディスプレイ表示の種類が円周面配置である場合、前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、画面中央角度の情報および占有視野角の情報を含む
前記(3)または(4)に記載の映像信号処理装置。
(7)前記マルチディスプレイ表示の種類が球面配置である場合、前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、画面横方向中央角度の情報、画面縦方向中央角度の情報、および横方向または縦方向の占有視野角の情報を含む
前記(3)または(4)に記載の映像信号処理装置。
(8)前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、ビデオフォーマットの情報を含む
前記(3)から(7)のいずれかに記載の映像信号処理装置。
(9)前記マルチストリームに含まれる各映像ストリームは、どの表示装置に対応するかを示すストリーム識別情報を含む
前記(1)から(8)のいずれかに記載の映像信号処理装置。
(10)複数の表示装置からそれぞれの性能情報を受信する手順と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して映像信号出力装置に送信する手順と、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信する手順と、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する手順を有する
映像信号処理方法。
(11)複数の表示装置が接続された映像信号処理装置から、前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいて生成されたマルチストリーム情報を受信する情報受信部と、
前記マルチストリーム情報に基づいて前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを生成して前記映像信号処理装置に送信するマルチストリーム送信部を備える
映像信号出力装置。
(12)複数の表示装置からそれぞれの性能情報を受信する情報受信部と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいて前記複数の表示装置のそれぞれのための映像ストリームを生成してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する映像ストリーム送信部を備える
映像信号出力装置。
(13)映像信号出力装置と複数の表示装置が映像信号処理装置を介して接続されて構成され、
前記映像信号処理装置は、
前記複数の表示装置からそれぞれの性能情報を受信し、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して前記映像信号出力装置に送信し、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信し、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する
マルチディスプレイシステム。
100・・・映像信号出力装置(ソース機器)
101・・・HDMI出力端子
102・・・HDMI送信部
103・・・制御部
104・・・信号源
105・・・復号部
106・・・情報送信部
200・・・表示装置(シンク機器)
201・・・HDMI入力端子
202・・・HDMI受信部
203・・・制御部
204・・・信号処理部
205・・・表示部
300・・・映像信号処理装置(コンバータ機器)
301・・・HDMI入力端子
302-1~302-N・・・HDMI出力端子
303・・・HDMI受信部
304-1~304-4・・・HDMI送信部
305・・・制御部
306・・・信号処理部
307・・・選択部
400,500・・・HDMIケーブル
602・・・ソース機器のデータ送信部(HDMI送信部)
621・・・HDMIトランスミッタ
622・・・IICマスターブロック
702・・・シンク機器のデータ受信部(HDMI受信部)
721・・・HDMIレシーバ
722・・・メモリ部
731・・・EDID ROM
732・・・SCDCレジスタ部
800・・・HDMIケーブル
Claims (13)
- 複数の表示装置からそれぞれの性能情報を受信する情報受信部と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して映像信号出力装置に送信する情報送信部と、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信するマルチストリーム受信部と、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する映像ストリーム送信部を備える
映像信号処理装置。 - 前記マルチディスプレイ表示の種類は、任意配置、プリセット配置、平面配置、円周面配置または球面配置の少なくともいずれかを含む
請求項1に記載の映像信号処理装置。 - 前記マルチストリーム情報は、前記複数の表示装置の個数の情報と前記マルチディスプレイ表示の種類の情報を含む
請求項1に記載の映像信号処理装置。 - 前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、ストリーム識別情報と配置位置情報を含む
請求項3に記載の映像信号処理装置。 - 前記マルチディスプレイ表示の種類が平面配置である場合、前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、画面左上端のピクセル位置の情報を含む
請求項3に記載の映像信号処理装置。 - 前記マルチディスプレイ表示の種類が円周面配置である場合、前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、画面中央角度の情報および占有視野角の情報を含む
請求項3に記載の映像信号処理装置。 - 前記マルチディスプレイ表示の種類が球面配置である場合、前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、画面横方向中央角度の情報、画面縦方向中央角度の情報、および横方向または縦方向の占有視野角の情報を含む
請求項3に記載の映像信号処理装置。 - 前記マルチストリーム情報は、前記複数の表示装置のそれぞれに対応して、ビデオフォーマットの情報を含む
請求項3に記載の映像信号処理装置。 - 前記マルチストリームに含まれる各映像ストリームは、どの表示装置に対応するかを示すストリーム識別情報を含む
請求項1に記載の映像信号処理装置。 - 複数の表示装置からそれぞれの性能情報を受信する手順と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して映像信号出力装置に送信する手順と、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信する手順と、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する手順を有する
映像信号処理方法。 - 複数の表示装置が接続された映像信号処理装置から、前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいて生成されたマルチストリーム情報を受信する情報受信部と、
前記マルチストリーム情報に基づいて前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを生成して前記映像信号処理装置に送信するマルチストリーム送信部を備える
映像信号出力装置。 - 複数の表示装置からそれぞれの性能情報を受信する情報受信部と、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいて前記複数の表示装置のそれぞれのための映像ストリームを生成してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する映像ストリーム送信部を備える
映像信号出力装置。 - 映像信号出力装置と複数の表示装置が映像信号処理装置を介して接続されて構成され、
前記映像信号処理装置は、
前記複数の表示装置からそれぞれの性能情報を受信し、
前記複数の表示装置の性能情報と前記複数の表示装置で実現されるマルチディスプレイ表示の種類の情報に基づいてマルチストリーム情報を生成して前記映像信号出力装置に送信し、
前記映像信号出力装置から、前記マルチストリーム情報に基づいて生成された前記複数の表示装置のそれぞれのための映像ストリームを含むマルチストリームを受信し、
前記マルチストリームから前記複数の映像ストリームを取り出してそれぞれを前記複数の表示装置の中の対応する表示装置に送信する
マルチディスプレイシステム。
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