WO2016072037A1 - Av信号送受信システム、シンク機器、av信号送受信方法、およびav信号受信方法 - Google Patents
Av信号送受信システム、シンク機器、av信号送受信方法、およびav信号受信方法 Download PDFInfo
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- WO2016072037A1 WO2016072037A1 PCT/JP2015/004084 JP2015004084W WO2016072037A1 WO 2016072037 A1 WO2016072037 A1 WO 2016072037A1 JP 2015004084 W JP2015004084 W JP 2015004084W WO 2016072037 A1 WO2016072037 A1 WO 2016072037A1
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- edid
- hdmi
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- sink device
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- 238000000034 method Methods 0.000 title claims description 9
- 230000008054 signal transmission Effects 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000008520 organization Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 16
- 230000008859 change Effects 0.000 description 7
- 230000004044 response Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
Definitions
- the present disclosure relates to a system and method for transmitting and receiving AV signals between a source device and a sink device.
- Non-Patent Document an AV signal transmission / reception system for transmitting / receiving an AV signal between a source device and a sink device connected to each other via an HDMI (registered trademark) (High-Definition Multimedia Interface) cable has been proposed (Non-Patent Document). 1).
- the source device reads the capability of the sink device from the sink device and transmits an AV signal corresponding to the capability to the sink device.
- the sink device can reproduce video or audio with image quality or sound quality according to its capability.
- the present disclosure provides an AV signal transmission / reception system and the like that can appropriately receive an AV signal.
- An AV signal transmission / reception system is an AV signal transmission / reception system including a source device and a sink device connected to the source device via an HDMI (registered trademark) (High-Definition Multimedia Interface) cable.
- the source device reads an EDID (Extended Display Identification Data), which is data indicating the capability of the sink device, from the sink device via the HDMI (registered trademark) cable, and analyzes the read EDID
- An analyzing unit that transmits the AV signal to the sink device via the HDMI (registered trademark) cable, and commands the transmitting unit to transmit the AV signal according to the analysis result of the EDID.
- a control unit that instructs the reading unit to read out the EDID in response to an HPD (Hot Plug Detect) signal received from the sink device via the HDMI (registered trademark) cable. Controls the receiving unit that receives the AV signal via the HDMI (registered trademark) cable, the memory that holds the EDID, the rewriting unit that rewrites the EDID held in the memory, and the output of the HPD signal Determining whether the received AV signal is an HDMI (registered trademark) signal conforming to the HDMI (registered trademark) standard or a DVI signal conforming to the DVI (Digital Visual Interface) standard, and the DVI signal If the EDID stored in the memory is With instructs the rewriter the example, and a determination processing section that the output of the HPD signal indicating that it is possible to the EDID read rewritten instructs the HPD control unit.
- HPD Hot Plug Detect
- the AV signal transmission / reception system can appropriately receive an AV signal.
- FIG. 1 is a configuration diagram illustrating a configuration of an AV signal transmission / reception system according to an embodiment.
- FIG. 2 is a block diagram illustrating the configuration of each of the source device and the sink device in the embodiment.
- FIG. 3 is a diagram illustrating a configuration of an HDMI (registered trademark) signal transmitted via the TMDS line in the embodiment.
- FIG. 4 is a diagram illustrating in detail data transmitted in the Control, Data Island, and Video Data included in the TMDS period in the embodiment.
- FIG. 5 is a diagram showing a configuration of EDID in the embodiment.
- FIG. 6 is a diagram for explaining an example of rewriting of EDID in the embodiment.
- FIG. 7 is a diagram for explaining another example of rewriting of EDID in the embodiment.
- FIG. 8 is a sequence diagram of the AV signal transmission / reception system according to the embodiment.
- FIG. 9 is a flowchart illustrating the processing operation of the sink device according to the embodiment.
- the present inventor has found that the following problems arise with respect to the AV signal transmission / reception system of Non-Patent Document 1 described in the “Background Art” column.
- the source device uses an EDID (Extended Display Identification Data) in the sink device and a DDC line in the HDMI (registered trademark) cable. read out.
- This EDID is data composed of a plurality of data blocks indicating the capability of the sink device. For example, EDID indicates whether resolution 1080p is possible, whether 4K resolution is possible, whether 3D display is possible, whether 5.1ch audio is possible, and the like.
- the source device determines the format of the video and audio to be transmitted based on the read EDID. For example, the source device determines the video format to be 3840 ⁇ 2160 / 60P / YCbCr 4: 4: 4/8 bit-depth. Alternatively, the source device determines the audio format to be LPCM (Linear Pulse Code Modulation) 2ch or the like.
- LPCM Linear Pulse Code Modulation
- the source device transmits an AV signal indicating at least one of video and audio in the determined format to the sink device.
- the source device transmits the signal property, which is information related to the above-described video and audio formats, to the sink device using the InfoFrame packet configuration in the blanking period.
- the sink device reproduces and displays the received AV signal while referring to the InfoFrame information.
- the processor that analyzes the contents of the read EDID may not be able to correctly analyze some data blocks in the EDID.
- the cause is an analysis error or a bug in the source device.
- the source device may transmit an AV signal different from the expected due to an analysis error or the like.
- a display quality problem occurs in the sink device.
- a DVI format signal (DVI signal) that does not include sound may be sent to the sink device as an AV signal.
- the pixel encoding format is YCbCr
- an AV signal to which InfoFrame information as if it is RGB may be transmitted to the sink device.
- the sink device determines whether the received AV signal is an HDMI (registered trademark) signal conforming to the HDMI (registered trademark) standard or a DVI signal conforming to the DVI standard. If the sink device determines that the signal is a DVI signal, the sink device rewrites the EDID held in the memory and outputs an HPD signal indicating that the rewritten EDID can be read.
- HDMI registered trademark
- DVI digital versatile interface
- FIG. 1 is a configuration diagram showing a configuration of an AV signal transmission / reception system according to the present embodiment.
- the AV signal transmitting / receiving system 10 includes a source device 200 and a sink device 100 connected to the source device 200 via an HDMI (registered trademark) (High-Definition Multimedia Interface) cable 300.
- HDMI registered trademark
- HDMI High-Definition Multimedia Interface
- the source device 200 is, for example, a recording / playback apparatus, a personal computer, a DVD player, a BD recorder, or the like, holds AV data indicating at least one of video and audio, and transmits the AV data as an AV signal.
- the sink device 100 is, for example, a TV or a projector, and receives an AV signal and transmits at least one of video and audio indicated by the AV signal.
- the source device 200 reads out the EDID (Extended Display Identification Data) of the sink device 100 ((1) in FIG. 1), and transmits an AV signal corresponding to the EDID to the sink device 100 ((2) in FIG. 1).
- EDID Extended Display Identification Data
- the sink device 100 rewrites EDID (Extended Display Identification Data) according to whether the AV signal transmitted from the source device 200 is an HDMI (registered trademark) signal or a DVI signal ((3) in FIG. 1). Then, the source device 200 rereads the rewritten EDID from the sink device 100 ((4) in FIG. 1).
- EDID Extended Display Identification Data
- the source device 200 cannot correctly analyze the EDID, for example, and transmits the AV signal as the DVI signal, the EDID is rewritten and re-read. That is, the EDID is rewritten by the sink device 100, and the rereading of the rewritten EDID is executed by the source device 200.
- the source device 200 can correctly analyze the rewritten EDID, the source device 200 can transmit an AV signal as an AV signal instead of a DVI signal.
- the sink device 100 can appropriately receive the AV signal.
- FIG. 2 is a block diagram showing the configuration of each of the source device 200 and the sink device 100 in the present embodiment.
- the source device 200 includes an AV signal transmission unit 210, a control unit 220, an EDID reading unit 230, and an EDID analysis unit 240.
- the AV signal transmission unit 210 transmits an AV signal to the sink device 100 via a TMDS (Transition Minimized Differential Signaling) line included in the HDMI (registered trademark) cable 300 in response to a transmission command from the control unit 220.
- TMDS Transition Minimized Differential Signaling
- the EDID reading unit 230 accesses the memory 140 of the sink device 100 via a DDC (Display Data Channel) line included in the HDMI (registered trademark) cable 300 in response to a read command from the control unit 220. Then, the EDID reading unit 230 reads the EDID indicating the capability of the sink device 100 stored in the memory 140 via the DDC line.
- DDC Display Data Channel
- the EDID analysis unit 240 analyzes the EDID read by the EDID reading unit 230 and notifies the control unit 220 of the analysis result.
- the control unit 220 instructs the AV signal transmission unit 210 to transmit an AV signal according to the analysis result of the EDID. This command is performed when the control unit 220 outputs the above-described transmission command to the AV signal transmission unit 210.
- control unit 220 may change the format of the AV signal transmitted from the AV signal transmission unit 210 according to the analysis result.
- the format is a format of an HDMI (registered trademark) signal conforming to the HDMI (registered trademark) standard, or a format of a DVI signal conforming to the DVI (Digital Visual Interface) standard.
- control unit 220 causes the AV signal to be transmitted as an HDMI (registered trademark) signal from the AV signal transmission unit 210 or the AV signal to be transmitted as a DVI signal from the AV signal transmission unit 210 according to the analysis result. There is.
- control unit 220 monitors the output level of the HPD signal received from the sink device 100 via the HPD (Hot Plug Detect) line included in the HDMI (registered trademark) cable 300.
- HPD Hot Plug Detect
- the control unit 220 instructs the EDID reading unit 230 to read EDID. This command is performed when the control unit 220 outputs the above-described reading command to the EDID reading unit 230.
- the sink device 100 includes an AV signal receiving unit 110, a determination processing unit 120, a rewriting unit 130, a memory 140, and an HPD control unit 150.
- the AV signal receiving unit 110 receives the AV signal transmitted from the source device 200 via the TMDS line of the HDMI (registered trademark) cable 300.
- the memory 140 is an EDID ROM (Read Only Memory) and holds the EDID.
- the rewriting unit 130 rewrites the EDID held in the memory 140.
- the HPD control unit 150 controls the output of the HPD signal.
- the determination processing unit 120 is configured as a TMDS decoder, for example, and the AV signal received by the AV signal receiving unit 110 is an HDMI (registered trademark) signal conforming to the HDMI (registered trademark) standard or a DVI conforming to the DVI standard. Determine if it is a signal.
- the determination processing unit 120 determines that the AV signal is a DVI signal
- the determination processing unit 120 instructs the rewriting unit 130 to rewrite the EDID held in the memory 140. This instruction is performed when the determination processing unit 120 outputs an EDID rewrite signal to the rewrite unit 130. Further, in this case, the determination processing unit 120 instructs the HPD control unit 150 to output an HPD signal indicating that the rewritten EDID can be read. This instruction is performed by the determination processing unit 120 outputting an HPD control signal to the HPD control unit 150.
- the determination processing unit 120 reproduces a video based on the AV signal and causes the display unit 161 to display the video.
- the AV signal is an HDMI (registered trademark) signal
- the determination processing unit 120 reproduces video and audio based on the AV signal, displays the video on the display unit 161, and outputs audio from the speaker 162. Is output.
- FIG. 3 is a diagram showing a configuration of an HDMI (registered trademark) signal transmitted via the TMDS line.
- An AV signal conforming to the HDMI (registered trademark) standard, that is, an HDMI (registered trademark) signal is transmitted in a TMDS period.
- This TMDS period includes Control, Data Island, and Video Data.
- Video signals are transmitted to Video Data
- control signals are transmitted to Control
- audio signals are transmitted to Data Island.
- FIG. 4 is a diagram illustrating in detail the data transmitted in the Control, Data Island, and Video Data included in the TMDS period.
- an audio signal (Audio Samples) is transmitted to Data Island, and AVI InfoFrame, which is a signal indicating an aspect of the AV signal, is transmitted.
- AVI is an abbreviation for Auxiliary Video information.
- a signal consisting of, for example, 10 bits called a Guard Band for indicating the boundary of the Data Island is transmitted.
- the determination processing unit 120 determines that the AV signal is an HDMI (registered trademark) signal. if the signal belonging to Data Island is not included in the AV signal, the determination processing unit 120 determines that the AV signal is a DVI signal. Alternatively, if the AV signal includes a Guard Band that is a signal arranged before or after a signal belonging to Data Island defined by the HDMI (registered trademark) standard, the determination processing unit 120 determines that the AV signal is the HDMI signal. It is determined that the signal is a (registered trademark) signal.
- the determination processing unit 120 determines that the AV signal is a DVI signal.
- the determination processing unit 120 belongs to the Data Island defined by the HDMI (registered trademark) standard, and if the AVI InfoFrame that is a signal indicating the aspect of the AV signal is included in the AV signal, the AV signal is included in the HDMI signal. It is determined that the signal is a (registered trademark) signal.
- the determination processing unit 120 determines that the AV signal is a DVI signal.
- FIG. 5 is a diagram showing the configuration of EDID.
- EDID consists of a 128-byte basic block (Block 0) and a 128-byte extension block (Block 1).
- the extension block includes a plurality of data blocks. Specifically, these data blocks are a Video Data Block and a Vendor-Specific Data Block (VSDB).
- Video Data Block indicates a video format and the like, and includes an SVD (Short Video Descriptor) list composed of a plurality of bytes.
- VSDB indicates the capability of the sink device 100 defined by the vendor.
- head information 1-byte information (hereinafter referred to as head information) indicating the type and data size of the data block is included.
- the head information is composed of 8 bits, and the head 3 bits thereof indicate the type of data block (Tag Code). Further, 5 bits following the first 3 bits indicate the data size of a portion (hereinafter referred to as subsequent information) following the first information in the data block.
- the head information indicated by “67” includes the head 3 bits “011” and the 5 bits “00111” following the head 3 bits.
- the leading 3 bits “011” indicate that the type of the data block including the leading information is VSDB.
- the 5 bits “00111” following the first 3 bits indicate that there are 7 bytes of subsequent information included in the VSDB.
- the head information indicated by “65” includes the head 3 bits “011” and the 5 bits “00101” following the head 3 bits.
- the leading 3 bits “011” indicate that the type of the data block including the leading information is VSDB.
- 5 bits “00101” following the 3 bits indicate that there are 5 bytes of subsequent information included in the VSDB.
- the EDID may include a plurality of VSDBs so as to include the first VSDB including the head information “67” and the second VSDB including the head information “65”.
- the first 3 bytes (24 bits) of the subsequent information in the VSDB indicate a code for identifying the vendor (hereinafter referred to as a vendor code).
- This vendor code is an IEEE OUI (Organizationally Unique Identifier), for example, 0x000C03.
- Such vendor codes are subject to change even when assigned to the same vendor.
- the vendor code “0xAAAAAAA” assigned to a predetermined vendor is changed to the vendor code “0xBBBBBBB”.
- the EDID includes a plurality of VSDBs having different vendor codes.
- the first VSDB is the old VSDB before the change
- the second VSDB is the new VSDB after the change.
- the subsequent information is analyzed based on the vendor code. Therefore, when the vendor device is changed to a new vendor code, the source device 200 can correctly analyze the subsequent information of the old first VSDB before the change, but correctly correct the subsequent information of the new second VSDB. It may not be possible to analyze.
- the source device 200 that cannot correctly analyze the subsequent information may transmit the AV signal as the DVI signal.
- FIG. 6 is a diagram for explaining an example of rewriting of EDID.
- the rewriting unit 130 When rewriting the EDID, the rewriting unit 130 according to the present embodiment deletes the second VSDB having the new vendor code from the first VSDB and the second VSDB included in the EDID, for example, as shown in FIG. To do. Thereby, since the second VSDB having the new vendor code is not included in the EDID, the source device 200 can correctly analyze the EDID. As a result, the source device 200 can transmit the AV signal corresponding to the result of the correct analysis with respect to the first VSDB, that is, the HDMI (registered trademark) signal, to the sink device 100.
- the HDMI registered trademark
- the rewriting unit 130 switches the order of the first VSDB and the second VSDB included in the EDID. That is, the rewriting unit 130 changes the order of the first VSDB and the second VSDB in the order of the second VSDB and the first VSDB.
- the source device 200 sequentially analyzes a plurality of data blocks included in the EDID in the order in which they are arranged in the EDID. At this time, when the source device 200 sequentially analyzes a plurality of data blocks of the same type, if the latest data block is analyzed, only the analysis result at that time remains, and the analysis result of the previous data block is discarded. There is.
- the source device 200 discards the analysis result for the second VSDB. . That is, the result of erroneous analysis for the second VSDB having the new vendor code is discarded. In other words, the source device 200 holds only the analysis result of the first VSDB having the old vendor code, that is, the correctly analyzed result. Therefore, the source device 200 can transmit the AV signal corresponding to the result of the correct analysis with respect to the first VSDB, that is, the HDMI (registered trademark) signal, to the sink device 100.
- the HDMI registered trademark
- the rewriting unit 130 when rewriting the EDID, the rewriting unit 130 further adds the first VSDB to the EDID. In other words, the rewrite unit 130 writes the first VSDB after the second VSDB to the EDID in which the second VSDB is written following the first VSDB.
- the source device 200 discards the analysis result for the second VSDB, and holds only the analysis result of the first VSDB, that is, the result of correct analysis. Therefore, the source device 200 can transmit the AV signal corresponding to the result of the correct analysis with respect to the first VSDB, that is, the HDMI (registered trademark) signal, to the sink device 100.
- the rewriting unit 130 rewrites a part of the EDID, but may rewrite the EDID itself.
- FIG. 7 is a diagram for explaining another example of rewriting of EDID.
- the area of data read by the source device 200 is the 0th to 255th bytes of the recording area of the memory 140. That is, the source device 200 does not read data in the area after the 256th byte of the memory 140. Therefore, the memory 140 holds the read EDID in the area from the 0th byte to the 255th byte in the recording area, and holds the first EDID and the second EDID in the area after the 256th byte. You may keep it.
- the first EDID is an EDID including a first VSDB and a second VSDB
- the second EDID is an EDID including only the first VSDB among the first VSDB and the second VSDB. It is.
- the order of the first VSDB and the second VSDB included in the first EDID and the second EDID is different.
- the first EDID is an EDID including these VSDBs in the order of the first VSDB and the second VSDB
- the second EDID is the first VSDB, the second VSDB, and the first VSDB. EDID including these VSDBs in this order.
- the rewriting unit 130 when rewriting the EDID, the rewriting unit 130 according to the present embodiment overwrites the read target EDID with either one of the first EDID and the second EDID, thereby reading the read target EDID.
- the read target EDID is the first EDID or the second EDID.
- the rewrite unit 130 rewrites the read target EDID that is the first EDID to the second EDID.
- the rewriting unit 130 when the read target EDID is the second EDID, the rewriting unit 130 rewrites the read target EDID that is the second EDID to the first EDID.
- the rewrite unit 130 can return the rewritten read target EDID to the EDID before rewriting (first EDID or second EDID). Returning such rewritten EDID to the EDID before rewriting may be performed at any timing. Further, the rewritten EDID may be maintained without returning to the EDID before rewriting.
- FIG. 8 is a sequence diagram of AV signal transmission / reception system 10 in the present embodiment.
- step S101 when the sink device 100 is connected to the source device 200 via the HDMI (registered trademark) cable 300, the sink device 100 switches the output level of the HPD signal from Low to High (step S101).
- step S102 When recognizing that the output level of the HPD signal has changed from Low to High, the source device 200 accesses the memory 140 of the sink device 100 (step S102). Then, the source device 200 reads out the EDID held in the memory 140 (step S103).
- step S103 is a reading step in which the source device 200 reads EDID, which is data indicating the capability of the sink device 100, from the sink device 100 via the HDMI (registered trademark) cable 300.
- step S104 the source device 200 analyzes the read EDID.
- step S104 is an analysis step in which the source device 200 analyzes the read EDID.
- the source device 200 transmits the AV signal as a DVI signal to the sink device 100 (step S105).
- step S105 is a transmission step in which the source device 200 transmits an AV signal corresponding to the EDID analysis result to the sink device 100 via the HDMI (registered trademark) cable 300.
- step S106 When receiving the AV signal from the source device 200, the sink device 100 determines that the AV signal is a DVI signal (step S106).
- This step S106 includes a reception step and a determination step.
- the sink device 100 receives an AV signal via the HDMI (registered trademark) cable 300.
- the determination step the sink device 100 determines whether the received AV signal is an HDMI (registered trademark) signal compliant with the HDMI (registered trademark) standard or a DVI signal compliant with the DVI standard.
- the sink device 100 determines that the AV signal is a DVI signal.
- the sink device 100 starts playback of the video based on the received DVI signal. Then, when a predetermined period has elapsed from the determination in step S106, the sink device 100 rewrites the EDID (the above-described read target EDID) held in the memory 140 (step S107). Note that this step S107 is a rewriting step of rewriting the already read EDID held in the memory of the sink device 100 when the sink device 100 determines that the AV signal is a DVI signal.
- the sink device 100 changes the output level of the HPD signal. That is, the sink device 100 returns the output level of the HPD signal from High to Low, and further switches the Low to High (step S108).
- the sink device 100 outputs an HPD (Hot Plug Detect) signal indicating that the rewritten EDID can be read to the source device 200 via the HDMI (registered trademark) cable 300. It is a control step.
- an HPD signal indicating that the rewritten EDID can be read is output to the source device 200.
- the source device 200 When the source device 200 recognizes that the output level of the HPD signal has changed from Low to High, the source device 200 accesses the memory 140 of the sink device 100 (step S109). Then, the source device 200 reads the EDID held in the memory 140, that is, the rewritten read target EDID (step S110).
- the source device 200 analyzes the read EDID (step S111).
- the source device 200 transmits the AV signal as an HDMI (registered trademark) signal to the sink device 100 (step S112).
- the sink device 100 determines that the AV signal is an HDMI (registered trademark) signal, and reproduces at least one of video and audio based on the AV signal (Ste S113). That is, the sink device 100 changes the video playback based on the DVI signal to video or audio playback based on the HDMI (registered trademark) signal.
- HDMI registered trademark
- FIG. 9 is a flowchart showing the processing operation of the sink device 100 in the present embodiment.
- the sink device 100 first switches the output level of the HPD signal from Low to High (step S201). Then, the sink device 100 receives the AV signal via the HDMI (registered trademark) cable 300 (reception step S202). At this time, the sink device 100 determines whether the received AV signal is an HDMI (registered trademark) signal or a DVI signal (determination step S203). Here, when the sink device 100 determines that the received AV signal is an HDMI (registered trademark) signal (HDMI (registered trademark) in determination step S203), based on the AV signal, the sink device 100 determines whether the received AV signal is video or audio. At least one of them is reproduced (step S208).
- HDMI registered trademark
- DVI DVI signal
- the sink device 100 determines that the received AV signal is a DVI signal (DVI in determination step S203).
- the sink device 100 reproduces video based on the DVI signal (step S204).
- the sink device 100 determines whether or not a predetermined period (predetermined period) has elapsed since it was determined that the AV signal is a DVI signal (step S205). If it is determined that the predetermined period has not elapsed (No in step S205), the sink device 100 continues to play the video based on the DVI signal until the predetermined period elapses (step S204).
- predetermined period a predetermined period
- the sink device 100 rewrites the EDID (rewrite step S206). Then, the sink device 100 returns the output level of the HPD signal from High to Low, and further switches the output level from Low to High (HPD control step S207).
- the AV signal transmission / reception system 10 includes the source device 200 and the sink device 100 connected to the source device 200 via the HDMI (registered trademark) cable 300.
- the source device 200 includes an EDID reading unit 230, an EDID analysis unit 240, an AV signal transmission unit 210, and a control unit 220.
- the EDID reading unit 230 reads EDID that is data indicating the capability of the sink device 100 from the sink device 100 via the HDMI (registered trademark) cable 300.
- the EDID analysis unit 240 analyzes the read EDID.
- the AV signal transmission unit 210 transmits the AV signal to the sink device 100 via the HDMI (registered trademark) cable 300.
- the control unit 220 instructs the AV signal transmission unit 210 to transmit an AV signal according to the analysis result of the EDID. Further, the control unit 220 instructs the EDID reading unit 230 to read out EDID in accordance with the HPD signal received from the sink device 100 via the HDMI (registered trademark) cable 300.
- the sink device 100 includes an AV signal receiving unit 110, a memory 140, a rewriting unit 130, an HPD control unit 150, and a determination processing unit 120.
- the AV signal receiving unit 110 receives an AV signal via the HDMI (registered trademark) cable 300.
- the memory 140 holds EDID.
- the rewriting unit 130 rewrites the EDID held in the memory 140.
- the HPD control unit 150 controls the output of the HPD signal.
- the determination processing unit 120 determines whether the received AV signal is an HDMI (registered trademark) signal conforming to the HDMI (registered trademark) standard or a DVI signal conforming to the DVI standard. If the determination processing unit 120 determines that the AV signal is a DVI signal, the determination processing unit 120 instructs the rewriting unit 130 to rewrite the EDID held in the memory 140. Further, the determination processing unit 120 instructs the HPD control unit 150 to output an HPD signal indicating that the rewritten EDID can be read.
- HDMI registered trademark
- DVI signal conforming to the DVI standard a DVI signal conforming to the DVI standard. If the determination processing unit 120 determines that the AV signal is a DVI signal, the determination processing unit 120 instructs the rewriting unit 130 to rewrite the EDID held in the memory 140. Further, the determination processing unit 120 instructs the HPD control unit 150 to output an HPD signal indicating that the rewritten EDID can be read.
- the source device 200 cannot correctly analyze the EDID, for example, and transmits the AV signal as the DVI signal, the EDID is rewritten and reread. That is, the EDID is rewritten by the sink device 100, and the rereading of the rewritten EDID is executed by the source device 200.
- the source device 200 can correctly analyze the rewritten EDID, the source device 200 can transmit an AV signal as an HDMI (registered trademark) signal instead of a DVI signal.
- the sink device 100 can appropriately receive the AV signal.
- the determination processing unit 120 determines that the AV signal is an HDMI (registered trademark) signal. On the other hand, if the signal belonging to Data Island is not included in the AV signal, the determination processing unit 120 determines that the AV signal is a DVI signal.
- the sink device 100 can appropriately determine whether the AV signal is an HDMI (registered trademark) signal or a DVI signal.
- the determination processing unit 120 includes the AV signal. It is determined that the signal is an HDMI (registered trademark) signal. On the other hand, if the Guard Band is not included in the AV signal, the determination processing unit 120 may determine that the AV signal is a DVI signal.
- the determination processing unit 120 includes an AVI InfoFrame that is a signal belonging to Data Island defined by the HDMI (registered trademark) standard and that indicates a video mode indicated by the AV signal. Then, it is determined that the AV signal is an HDMI (registered trademark) signal. On the other hand, if the AVI InfoFrame is not included in the AV signal, the determination processing unit 120 may determine that the AV signal is a DVI signal.
- the memory 140 may hold a read target EDID that is an EDID read by the source device 200 and may hold the first and second EDIDs.
- the first EDID has only one VSDB defined by the HDMI (registered trademark) standard and including a code for identifying a predetermined organization.
- the second EDID has a plurality of VSDBs each including a different code for identifying a predetermined organization.
- the rewriting unit 130 rewrites the read target EDID indicating the same content as one of the first and second EDIDs to the other of the first and second EDIDs.
- the reading target EDID can be rewritten to the first EDID or rewritten to the second EDID. That is, the read EDID can be switched between the first EDID and the second EDID.
- the rewriting unit 130 may rewrite the read target EDID indicating the same content as the second EDID to the first EDID.
- the read target EDID having two VSDBs can be switched to the first EDID having only one VSDB, so that an EDID analysis error by the source device 200 can be suppressed, and the sink device 100 appropriately transmits the AV signal. Can be received. Further, the second EDID is written in the memory as the initial value of the reading target EDID. Therefore, if the application capability of the source device 200 is high, the source device 200 can transmit, for example, an AV signal corresponding to the latest capability or function of the sink device 100 to the sink device 100.
- the first EDID may have a plurality of VSDBs defined by the HDMI (registered trademark) standard and including different codes for identifying predetermined institutions.
- the second EDID has a plurality of VSDBs arranged in an order different from the order of the plurality of VSDBs arranged in the first EDID. Then, the rewrite unit 130 rewrites the read target EDID indicating the same content as one of the first and second EDIDs to the other of the first and second EDIDs.
- the reading target EDID can be rewritten to the first EDID or rewritten to the second EDID. That is, the read EDID can be switched between the first EDID and the second EDID. Further, by switching to any one of the EDIDs, an EDID analysis error by the source device 200 can be suppressed, and the sink device 100 can appropriately receive the AV signal.
- the determination processing unit 120 determines whether the AV signal is a DVI signal, the determination processing unit 120 determines whether a predetermined period has elapsed since the determination, and determines that the predetermined period has elapsed.
- the rewriting unit 130 may be instructed to rewrite EDID.
- the sink device 100 displays an image based on the DVI signal.
- the EDID is rewritten and re-read immediately after it is determined that the AV signal is a DVI signal
- the displayed video is immediately switched to a video based on the HDMI (registered trademark) signal. It will change. Therefore, the viewer of the sink device 100 is uncomfortable. Therefore, as described above, when a predetermined period has elapsed from the determination, the EDID can be rewritten to reduce the sense of discomfort and to make the source device 200 operate stably. it can.
- the determination processing unit 120 may cause the HPD control unit 150 to lower the level of the output HPD signal from High to Low and then increase it again to High. . As a result, the determination processing unit 120 causes the HPD control unit 150 to output to the source device 200 an HPD signal indicating that the rewritten EDID can be read.
- the source device 200 can be urged to reread the EDID by changing the level of the HPD signal, the AV signal based on the rewritten EDID can be easily transmitted from the source device 200.
- each of the sink device 100 and the source device 200 in the present embodiment may be configured by an integrated circuit, a microprocessor, or a microcomputer.
- a unit including the control unit 220, the EDID reading unit 230, and the EDID analysis unit 240 is configured by a microprocessor.
- a unit including the determination processing unit 120, the rewriting unit 130, and the HPD control unit 150 is configured by a microprocessor.
- the processing operations of the sink device 100 and the source device 200 may be realized by a microprocessor reading and executing a computer program.
- the present disclosure is applicable to an AV signal transmission / reception system that can appropriately receive an AV signal.
- the present disclosure is applicable to an AV signal transmission / reception system including a source device such as a DVD player or a BD recorder and a sink device such as a TV.
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Abstract
Description
[1.概要]
図1は、本実施の形態におけるAV信号送受信システムの構成を示す構成図である。
以下、本実施の形態におけるAV信号送受信システムについて詳細に説明する。
図8は、本実施の形態におけるAV信号送受信システム10のシーケンス図である。
以上のように、AV信号送受信システム10は、ソース機器200と、HDMI(登録商標)ケーブル300を介してソース機器200に接続されたシンク機器100とを含む。ソース機器200は、EDID読出部230と、EDID解析部240と、AV信号送信部210と、制御部220とを備える。EDID読出部230は、シンク機器100の能力を示すデータであるEDIDを、HDMI(登録商標)ケーブル300を介してシンク機器100から読み出す。EDID解析部240は、読み出されたEDIDを解析する。AV信号送信部210は、HDMI(登録商標)ケーブル300を介してAV信号をシンク機器100に送信する。制御部220は、EDIDの解析結果に応じたAV信号の送信をAV信号送信部210に命令する。さらに、制御部220は、シンク機器100からHDMI(登録商標)ケーブル300を介して受信されるHPD信号に応じて、EDIDの読み出しをEDID読出部230に命令する。また、シンク機器100は、AV信号受信部110と、メモリ140と、書換部130と、HPD制御部150と、判定処理部120とを備える。AV信号受信部110は、HDMI(登録商標)ケーブル300を介してAV信号を受信する。メモリ140は、EDIDを保持する。書換部130は、メモリ140に保持されているEDIDを書き換える。HPD制御部150は、HPD信号の出力を制御する。判定処理部120は、受信されたAV信号がHDMI(登録商標)規格に準拠したHDMI(登録商標)信号か、DVI規格に準拠したDVI信号かを判定する。そして、判定処理部120は、AV信号がDVI信号と判定した場合、メモリ140に保持されているEDIDの書き換えを書換部130に命令する。さらに、判定処理部120は、書き換えられたEDIDの読み出しが可能であることを示すHPD信号の出力をHPD制御部150に命令する。
100 シンク機器
110 AV信号受信部
120 判定処理部
130 書換部
140 メモリ
150 HPD制御部
200 ソース機器
210 AV信号送信部
220 制御部
230 EDID読出部
240 EDID解析部
300 HDMI(登録商標)ケーブル
Claims (12)
- ソース機器と、HDMI(登録商標)(High-Definition Multimedia Interface)ケーブルを介して前記ソース機器に接続されたシンク機器とを含むAV信号送受信システムであって、
前記ソース機器は、
前記シンク機器の能力を示すデータであるEDID(Extended Display Identification Data)を、前記HDMI(登録商標)ケーブルを介して前記シンク機器から読み出す読出部と、
読み出された前記EDIDを解析する解析部と、
前記HDMI(登録商標)ケーブルを介してAV信号を前記シンク機器に送信する送信部と、
前記EDIDの解析結果に応じたAV信号の送信を前記送信部に命令するとともに、前記シンク機器から前記HDMI(登録商標)ケーブルを介して受信されるHPD(Hot Plug Detect)信号に応じて、前記EDIDの読み出しを前記読出部に命令する制御部とを備え、
前記シンク機器は、
前記HDMI(登録商標)ケーブルを介して前記AV信号を受信する受信部と、
前記EDIDを保持するメモリと、
前記メモリに保持されている前記EDIDを書き換える書換部と、
前記HPD信号の出力を制御するHPD制御部と、
受信された前記AV信号がHDMI(登録商標)規格に準拠したHDMI(登録商標)信号か、DVI(Digital Visual Interface)規格に準拠したDVI信号かを判定し、前記DVI信号と判定した場合、前記メモリに保持されている前記EDIDの書き換えを前記書換部に命令するとともに、書き換えられた前記EDIDの読み出しが可能であることを示す前記HPD信号の出力を前記HPD制御部に命令する判定処理部とを備える
AV信号送受信システム。 - 前記判定処理部は、
HDMI(登録商標)規格によって規定されるData Islandに属する信号が、前記AV信号に含まれていれば、前記AV信号がHDMI(登録商標)信号であると判定し、前記Data Islandに属する信号が含まれていなければ、前記AV信号がDVI信号であると判定する
請求項1に記載のAV信号送受信システム。 - 前記判定処理部は、
HDMI(登録商標)規格によって規定されるData Islandに属する信号の前または後に配置される信号であるGuard Bandが、前記AV信号に含まれていれば、前記AV信号がHDMI(登録商標)信号であると判定し、前記Guard Bandが含まれていなければ、前記AV信号がDVI信号であると判定する
請求項1に記載のAV信号送受信システム。 - 前記判定処理部は、
HDMI(登録商標)規格によって規定されるData Islandに属する信号であって、前記AV信号によって示される映像の態様を示す信号であるAVI InfoFrameが、前記AV信号に含まれていれば、前記AV信号がHDMI(登録商標)信号であると判定し、前記AVI InfoFrameが含まれていなければ、前記AV信号がDVI信号であると判定する
請求項1に記載のAV信号送受信システム。 - 前記メモリは、
前記ソース機器によって読み出される前記EDIDである読出対象EDIDを保持するとともに、
HDMI(登録商標)規格によって規定された、所定の機関を識別するためのコードを含むVSDB(Vendor-Specific Data Block)を1つのみ有する第1のEDIDと、それぞれ所定の機関を識別するための互いに異なるコードを含む複数のVSDBを有する第2のEDIDとを保持し、
前記書換部は、
前記第1および第2のEDIDのうちの何れか一方と同一内容を示す前記読出対象EDIDを、前記第1および第2のEDIDのうちの他方に書き換える
請求項1~4の何れか1項に記載のAV信号送受信システム。 - 前記書換部は、
前記第2のEDIDと同一内容を示す前記読出対象EDIDを、前記第1のEDIDに書き換える
請求項5に記載のAV信号送受信システム。 - 前記メモリは、
前記ソース機器によって読み出される前記EDIDである読出対象EDIDを保持するとともに、
HDMI(登録商標)規格によって規定された、それぞれ所定の機関を識別するための互いに異なるコードを含む複数のVSDB(Vendor-Specific Data Block)を有する第1のEDIDと、前記第1のEDIDにおいて配置される前記複数のVSDBの順番と異なる順番に配置された前記複数のVSDBを有する第2のEDIDとを保持し、
前記書換部は、
前記第1および第2のEDIDのうちの何れか一方と同一内容を示す前記読出対象EDIDを、前記第1および第2のEDIDのうちの他方に書き換える
請求項1~4の何れか1項に記載のAV信号送受信システム。 - 前記判定処理部は、
前記AV信号がDVI信号であると判定した場合、当該判定から予め定められた期間が経過したか否を判別し、前記予め定められた期間が経過したと判別したときに、前記書換部に対して前記EDIDの書き換えを命令する
請求項1~7の何れか1項に記載のAV信号送受信システム。 - 前記判定処理部は、
前記AV信号がDVI信号であると判定した場合、出力される前記HPD信号のレベルをHighからLowに下げて再びHighに上げることを前記HPD制御部に実行させることによって、書き換えられた前記EDIDの読み出しが可能であることを示す前記HPD信号を、前記HPD制御部から前記ソース機器に出力させる
請求項1~8の何れか1項に記載のAV信号送受信システム。 - HDMI(登録商標)(High-Definition Multimedia Interface)ケーブルを介してソース機器に接続されるシンク機器であって、
前記ソース機器から送信されたAV信号を、前記HDMI(登録商標)ケーブルを介して受信する受信部と、
前記シンク機器の能力を示すデータであるEDID(Extended Display Identification Data)を保持するメモリと、
前記メモリに保持されている前記EDIDを書き換える書換部と、
HPD(Hot Plug Detect)信号の前記HDMI(登録商標)ケーブルを介した前記ソース機器への出力を制御するHPD制御部と、
受信された前記AV信号がHDMI(登録商標)規格に準拠したHDMI(登録商標)信号か、DVI(Digital Visual Interface)規格に準拠したDVI信号かを判定し、前記DVI信号と判定した場合、前記メモリに保持されている前記EDIDの書き換えを前記書換部に命令するとともに、書き換えられた前記EDIDの読み出しが可能であることを示す前記HPD信号の出力を前記HPD制御部に命令する判定処理部とを備える
シンク機器。 - ソース機器と、HDMI(登録商標)(High-Definition Multimedia Interface)ケーブルを介して前記ソース機器に接続されたシンク機器との間でAV信号を送受信するAV信号送受信方法であって、
前記ソース機器が、前記シンク機器の能力を示すデータであるEDID(Extended Display Identification Data)を、前記HDMI(登録商標)ケーブルを介して前記シンク機器から読み出す読出ステップと、
前記ソース機器が、読み出された前記EDIDを解析する解析ステップと、
前記ソース機器が、前記EDIDの解析結果に応じたAV信号を、前記HDMI(登録商標)ケーブルを介して前記シンク機器に送信する送信ステップと、
前記シンク機器が、前記HDMI(登録商標)ケーブルを介して前記AV信号を受信する受信ステップと、
前記シンク機器が、受信された前記AV信号がHDMI(登録商標)規格に準拠したHDMI(登録商標)信号か、DVI(Digital Visual Interface)規格に準拠したDVI信号かを判定する判定ステップと、
前記シンク機器が、前記AV信号が前記DVI信号であると判定した場合、前記シンク機器のメモリに保持されている既に読み出された前記EDIDを書き換える書換ステップと、
前記シンク機器が、書き換えられた前記EDIDの読み出しが可能であることを示すHPD(Hot Plug Detect)信号を、前記HDMI(登録商標)ケーブルを介して前記ソース機器に出力するHPD制御ステップと、
を含むAV信号送受信方法。 - HDMI(登録商標)(High-Definition Multimedia Interface)ケーブルを介して、ソース機器からAV信号を受信するAV信号受信方法であって、
前記HDMI(登録商標)ケーブルを介して前記AV信号を受信する受信ステップと、
受信された前記AV信号がHDMI(登録商標)規格に準拠したHDMI(登録商標)信号か、DVI(Digital Visual Interface)規格に準拠したDVI信号かを判定する判定ステップと、
前記AV信号が前記DVI信号であると判定した場合、メモリに保持されている既に読み出されたEDID(Extended Display Identification Data)を書き換える書換ステップと、
書き換えられた前記EDIDの読み出しが可能であることを示すHPD(Hot Plug Detect)信号を、前記HDMI(登録商標)ケーブルを介して前記ソース機器に出力するHPD制御ステップと、
を含むAV信号受信方法。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009033446A (ja) * | 2007-07-26 | 2009-02-12 | Toshiba Corp | 映像処理装置及び映像処理方法 |
JP2010028552A (ja) * | 2008-07-22 | 2010-02-04 | Sony Corp | 情報処理装置および方法、並びにプログラム |
JP2010154241A (ja) * | 2008-12-25 | 2010-07-08 | Canon Inc | 通信装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US9179117B2 (en) | 2012-07-02 | 2015-11-03 | Kabushiki Kaisha Toshiba | Image processing apparatus |
JP2014011734A (ja) | 2012-07-02 | 2014-01-20 | Toshiba Corp | 映像処理装置 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009033446A (ja) * | 2007-07-26 | 2009-02-12 | Toshiba Corp | 映像処理装置及び映像処理方法 |
JP2010028552A (ja) * | 2008-07-22 | 2010-02-04 | Sony Corp | 情報処理装置および方法、並びにプログラム |
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US20170280184A1 (en) | 2017-09-28 |
JPWO2016072037A1 (ja) | 2017-08-17 |
EP3217677B1 (en) | 2020-04-29 |
EP3217677A1 (en) | 2017-09-13 |
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JP6447934B2 (ja) | 2019-01-09 |
US9832506B2 (en) | 2017-11-28 |
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