WO2011115130A1 - Dispositif d'affichage, récepteur de télévision, procédé de fourniture de signal audio, système de fourniture de signal audio, programme et support d'enregistrement - Google Patents

Dispositif d'affichage, récepteur de télévision, procédé de fourniture de signal audio, système de fourniture de signal audio, programme et support d'enregistrement Download PDF

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Publication number
WO2011115130A1
WO2011115130A1 PCT/JP2011/056092 JP2011056092W WO2011115130A1 WO 2011115130 A1 WO2011115130 A1 WO 2011115130A1 JP 2011056092 W JP2011056092 W JP 2011056092W WO 2011115130 A1 WO2011115130 A1 WO 2011115130A1
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WIPO (PCT)
Prior art keywords
audio signal
audio
display device
format
format information
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PCT/JP2011/056092
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English (en)
Japanese (ja)
Inventor
滋 大久保
竜也 吉田
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シャープ株式会社
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Publication of WO2011115130A1 publication Critical patent/WO2011115130A1/fr

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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
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
    • 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
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4131—Peripherals receiving signals from specially adapted client devices home appliance, e.g. lighting, air conditioning system, metering devices
    • 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
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44227—Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4516—Management of client data or end-user data involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal

Definitions

  • the present invention mainly relates to a display device that supplies an audio signal to a signal supply device and an audio signal supply method in such a display device.
  • Digital TV can display high-definition images of digitally broadcast programs.
  • many digital televisions support HDMI (High-Definition Multimedia Interface).
  • HDMI is an interface that can transmit uncompressed digital video and audio data.
  • the source device acquires information on the format recorded in the EDID (Extended display identification data) memory of the sink device from the sink device.
  • EDID Extended display identification data
  • a high-definition video format such as “1920x1280” or “1280x720” is recorded in the EDID memory, so an HDMI-compatible player (for example, BD (Blu-ray Disc))
  • BD Blu-ray Disc
  • the player can surround output the sound of the content recorded in surround from the surround speaker via the AV amplifier by connecting to the AV amplifier compatible with HDMI.
  • HDMI-compatible AV amplifiers generally support surround output
  • the EDID of the AV amplifier includes multi-channel L-PCM, DTS-HD, etc. in addition to stereo formats such as 2ch ⁇ ⁇ ⁇ L-PCM. This is because the format is recorded.
  • Patent Document 1 detects a format supported by all sink devices connected to itself (that is, a format recorded in the EDID of any sink device), and includes information indicating the detected format.
  • a source device that transmits to each sink device is disclosed.
  • Patent Document 2 discloses a data receiving device that, when receiving data in a format that does not conform, causes the data transmitting device to transmit data in a conforming format. Further, Patent Document 3 compares a video format supported by the video output device with a video format supported by the video output device, and outputs video data of the video format having the highest resolution among the video formats supported by both.
  • a display device that can be transmitted to a computer is disclosed.
  • a digital TV is a sink device and a system is configured in which an AV amplifier and a player are source devices directly connected to the TV.
  • the content video to be played back by the player is displayed on the digital TV.
  • the System Audio Control function defined by the HDMI CEC standard it is possible to output the audio of the content from a speaker connected to the AV amplifier.
  • Japanese Patent Publication Japanese Unexamined Patent Publication No. 2009-213121 (published on September 17, 2009)” Japanese Patent Publication “Japanese Patent Laid-Open No. 2008-160653 (published July 10, 2008)” Japanese Patent Publication “Japanese Laid-Open Patent Publication No. 2010-14979 (published on January 21, 2010)”
  • the present invention has been made in view of the above problems, and an object of the present invention is to process an audio signal processing device in a display device connected to a signal supply device such as a player and an audio signal processing device such as an AV amplifier. It is to realize a display device capable of supplying an audio signal of a proper format from a signal supply device regardless of whether or not it can process the audio signal of that format.
  • a display device is connected to a signal supply device that supplies a video signal and an audio signal, and an audio signal processing device that processes the audio signal supplied from the signal supply device.
  • a display device for displaying the video represented by the video signal, the acquisition means for acquiring from the audio signal processing device format information indicating the format of the audio signal that can be processed by the audio signal processing device; And rewriting means for rewriting the format information read by the signal supply device to the format information acquired by the acquisition means in order to determine the format of the audio signal to be supplied.
  • the display device causes the signal supply device to supply the display device with the format information indicating the format of the audio signal that can be processed by the audio signal processing device.
  • the format of the audio signal is determined to be a format that can be processed by the audio signal processing apparatus.
  • an audio signal processing device for example, an AV amplifier
  • the display device supplies a signal regardless of whether or not it can process the surround audio signal.
  • a device eg, a player
  • an audio signal supply method includes a signal supply device that supplies a video signal and an audio signal, and an audio signal processing device that processes the audio signal supplied from the signal supply device.
  • a display device connected to display a video represented by the video signal is an audio signal supply method for supplying an audio signal to the signal supply device, wherein the format indicates an audio signal format that can be processed by the audio signal processing device.
  • the acquisition step of acquiring information from the audio signal processing device and the format information read by the signal supply device to determine the format of the audio signal supplied to the display device are the format information acquired in the acquisition step. And a rewriting process for rewriting.
  • the audio signal supply method according to the present invention has the same effects as the display device according to the present invention.
  • an audio signal in a format that can be processed by the audio signal processing device in a display device connected to a signal supply device such as a player and an audio signal processing device such as an AV amplifier, an audio signal in a format that can be processed by the audio signal processing device. Regardless of whether or not the device itself can process the audio signal in that format, it is possible to supply the signal from the signal supply device.
  • FIG. 2 is a diagram showing a configuration of a system in which the television shown in FIG. 1 is a sink device, an AV amplifier is a repeater device, and a player and a recorder are source devices.
  • FIG. 1 is a flowchart showing a process in which the television shown in FIG. 1 acquires format information indicating a format (audio format) of an audio signal that can be processed by an AV amplifier and notifies the player of the format information.
  • FIG. FIG. 6B is a flowchart showing the operation when the audio output destination is changed by the user.
  • FIG. 2 is a diagram showing a configuration of a system in which the television shown in FIG. 1 is a repeater device, an AV amplifier is a sink device, and a player and a recorder are source devices.
  • An AV system 1 (audio signal supply system) according to an embodiment of the present invention will be described below with reference to FIGS.
  • FIG. 2 is a block diagram showing the system configuration of the AV system 1.
  • the AV system 1 includes a television 10 (display device), an AV amplifier 20, a player 30, a speaker 40, and a recorder 50.
  • the television 10, the AV amplifier 20, and the recorder 50 are connected by an HDMI cable so that the television 10 becomes a sink device, the AV amplifier 20 becomes a repeater device, and the recorder 50 becomes a source device.
  • the TV 10 and the AV amplifier 20 are connected by a digital audio cable that transmits the SPDIF format, and an audio signal output from the TV 10 to the AV amplifier 20 passes through the digital audio cable.
  • the television 10 and the player 30 are connected by an HDMI cable so that the television 10 becomes a sink device and the player 30 becomes a source device.
  • the AV amplifier 20 is connected to the speaker 40 by a speaker cable.
  • the television 10 (display device) will be specifically described with reference to FIGS. 1, 3, and 4.
  • the television 10 includes a plurality of HDMI I / Fs (interfaces) as described below.
  • the television 10 supports HDMI CEC, but does not support surround sound output. Furthermore, the television 10 sets whether the television 10 itself processes the audio signal and outputs the sound from the speaker 115, or the HDMI connected audio device processes the audio signal and outputs the sound from the speaker 40 (hereinafter, referred to as “audio”). , Referred to as “audio output destination setting”).
  • FIG. 1 is a block diagram showing the configuration of the television 10.
  • the television 10 of this embodiment includes a microcomputer unit 110, a CEC processing unit 101, a video processing unit 102, an audio processing unit 103, an HDMI receiver 104, an HDMI switch 105, a memory 111, and EDID memories 112a and 112b.
  • the CEC processing unit 101 transmits an “audio format request command” to the audio device (the AV amplifier 20 in FIG. 1) and receives an “audio format compatible command”.
  • the “audio format request command” is a vendor-specific CEC command that requests to return a format of an audio signal that can be processed by the audio device.
  • the “audio format compatible command” is a vendor-specific CEC command for transmitting to the sink device the format of an audio signal that can be processed by the audio device that has received the “audio format compatible command”.
  • Video processing unit 102 The video processing unit 102 converts the video signal of the program content received by the broadcast receiving unit (not shown) and the video signal input from the HDMI receiver 104 into a video signal that can be input to the panel 114.
  • the audio processing unit 103 performs processing for converting the audio signal of the program content received by the broadcast receiving unit and the audio signal input from the HDMI receiver 104 into an audio signal that can be input to the speaker 115 according to the audio output destination setting. Or is directly supplied to the AV amplifier 20 via the SPDIF / I / F 121 without performing the processing.
  • HDMI receiver 104 receives the TMDS signal from the HDMI switch 105 and outputs a video signal to the video processing unit 102 and an audio signal to the audio processing unit 103.
  • the HDMI switch 105 switches the TMDS signal supplied to the HDMI receiver 104 to either a TMDS signal input from the HDMI / I / F 112a or a TMDS signal input from the HDMI / I / F 112b.
  • the memory 111 stores format information indicating the format of an audio signal that can be processed by the television 10 or format information indicating the format of an audio signal that can be processed by an audio device connected to the TV 10 via HDMI. Hold.
  • the EDID memory 112a is a memory that holds EDID data referred to by an external HDMI device (player 30 in FIG. 1) connected through the HDMI / I / F 122a.
  • the EDID memory 112b is a memory that holds EDID data referred to by an external HDMI device (AV amplifier 20 in FIG. 1) connected through the HDMI / I / F 122b.
  • Remote control receiver 113 Remote control operation from a remote control receiving unit 113, a remote control (not shown) (for example, an operation that causes the television 10 to process audio signals and output audio from the speaker 115, an operation that causes the AV amplifier 20 to process audio signals and output from the speaker 40, video A signal corresponding to the input switching operation) is received.
  • a remote control for example, an operation that causes the television 10 to process audio signals and output audio from the speaker 115, an operation that causes the AV amplifier 20 to process audio signals and output from the speaker 40, video A signal corresponding to the input switching operation
  • the panel 114 displays a video based on the video signal input from the video processing unit 102.
  • the speaker 115 is a stereo speaker that outputs stereo sound based on the 2-channel audio signal input from the audio processing unit 103.
  • the SPDIF / I / F121 is an SPDIF terminal for SPDIF connection with an audio device (in FIG. 1, the AV amplifier 20) having an SPDIF input terminal.
  • HDMI I / F 122a is an HDMI terminal for HDMI connection with an external source device (player 30 in FIG. 1).
  • HDMI I / F 122b is an HDMI terminal for HDMI connection with an external source device (the AV amplifier 20 in FIG. 1).
  • the microcomputer unit 110 is a CPU (Central Processing Unit) that controls each unit of the television 10.
  • the microcomputer unit 110 records format information indicating the audio format included in the audio format compatible command received by the CEC processing unit 101 from the audio device (the AV amplifier 20 in FIG. 1) in the memory 111. Further, the microcomputer unit 110 uses the format information recorded in the memory 111 to store one of the EDID data stored in the EDID memory (EDID memory 112a in FIG. 1) other than the EDID memory to be referred to by the audio device. Rewrite the part.
  • the AV amplifier 20 is an audio device compatible with HDMI CEC, and is an amplifier that amplifies an input audio signal.
  • the AV amplifier 20 supports audio signals of AC-3, DTS, AAC, and many other formats. That is, the AV amplifier 20 can output the surround sound from the surround speaker system connected to the AV amplifier 20 in response to the sound signal of the surround sound format.
  • the AV amplifier 20 when receiving the audio format request command, includes format information indicating all audio formats that can be processed by the AV amplifier 20 in the audio format compatible command and returns it to the transmission source of the audio format request command.
  • the audio format request command includes a parameter indicating one or more audio formats
  • the player 30 is a player capable of playing back video content recorded on an optical disc, and specific examples include a BD player and a DVD player.
  • the player 30 determines that the connected HDMI device can process the multi-channel audio format, the player 30 outputs the video signal and the multi-channel audio signal to the HDMI device when the video content is reproduced. It has become.
  • the speaker 40 is a surround speaker system capable of outputting surround sound.
  • the recorder 50 is a recorder that incorporates a recording medium such as an HDD (hard disk drive), and can record the program content received by the broadcast receiving unit on a recording medium such as the HDD and reproduce it.
  • a recording medium such as an HDD (hard disk drive)
  • the recorder 50 determines that the connected HDMI device can process the multi-channel audio format, when the video content is reproduced, the recorder 50 outputs the video signal and the multi-channel audio signal to the HDMI device. It has become.
  • FIG. 3A is a flowchart showing an operation performed when the television 10 is activated.
  • the microcomputer unit 110 determines whether or not a CEC-compatible audio device is HDMI-connected to each HDMI I / F (S101).
  • the HDMI-connected audio device (herein referred to as “target audio device”)
  • the CEC processing unit 101 is requested to transmit an audio format request command to.
  • the AV amplifier 20 is HDMI-connected to the HDMI I / F 122b as shown in FIG. 1, the CEC processing unit 101 is requested to transmit an audio format request command to the AV amplifier 20.
  • the CEC processing unit 101 transmits an audio format request command to the target audio device based on the request from the microcomputer unit 110 (S102).
  • the microcomputer unit 110 S102
  • the CEC processing unit 101 waits for a certain period until an audio format compatible command is received (S103).
  • the CEC processing unit 101 When the audio format compatible command is received (YES in S103), the CEC processing unit 101 outputs format information indicating the audio format included in the received audio format compatible command to the microcomputer unit 110, and the microcomputer unit 110 receives the input.
  • the format information is stored in the memory 111 (S104).
  • the CEC processing unit 101 notifies the microcomputer unit 110 that it has not received, and the microcomputer unit 110 is information indicating the 2ch L-PCM format. Is stored in the memory 111 (S105).
  • the microcomputer unit 110 is set to output audio from an external speaker (that is, set to output audio from the speaker 40 by causing the AV amplifier 20 to process the audio signal). It is determined whether or not (S106).
  • the microcomputer unit 110 displays an EDID memory other than the EDID memory referred to by the target audio device (EDID memory 112a in FIG. 1). For, a part of the stored EDID data is rewritten. That is, the microcomputer unit 110 extracts the format information indicating the audio format that can output the audio signal from the SPDIF from the format information indicating the audio format stored in the memory 111. Then, the microcomputer unit 110 replaces the data portion related to the audio format in the EDID data with the extracted format information (S107).
  • the microcomputer unit 110 rewrites the data portion related to the audio format in the EDID data with the format information indicating the 2-channel audio format (audio format in which the television 10 can output audio from the speaker 115) (S108).
  • the microcomputer unit 110 detects that the player 30 is HDMI-connected via the HDMI / I / F 122a, the microcomputer unit 110 transmits the EDID data recorded in the EDID memory 112a to the player 30 (S109). ).
  • FIG. 3B is a flowchart illustrating an operation performed by the television 10 when the audio output destination setting is changed.
  • the microcomputer unit 110 is set to output sound from an external speaker in the sound output destination setting (that is, set to listen to sound using the AV amplifier 20). It is determined whether or not (S121).
  • the microcomputer unit 110 displays an EDID memory other than the EDID memory referenced by the target audio device (EDID memory 112a in FIG. 1). For, a part of the stored EDID data is rewritten. That is, the microcomputer unit 110 extracts the format information indicating the audio format that can output the audio signal from the SPDIF from the format information indicating the audio format stored in the memory 111. Then, the microcomputer unit 110 replaces the data portion related to the audio format in the EDID data with the extracted format information (S122).
  • the microcomputer unit 110 detects that the player 30 is HDMI-connected via the HDMI / I / F 122a, the microcomputer unit 110 transmits the EDID data recorded in the EDID memory 112a to the player 30 (S124). ).
  • the operation of the television 10 has been described above.
  • the “audio format that can output an audio signal from SPDIF” in S107 and S122 is set in advance when the television 10 is manufactured.
  • 4 (a) and 4 (b) show examples of EDID data before rewriting and EDID data after rewriting in S107 and S122, respectively, in hexadecimal notation.
  • the 9A byte from the beginning of the EDID data indicates the identifier of the start of the audio data block and the number of bytes of data indicating the audio format.
  • the identifier of the start of the audio data block is “001” of the first 3 bits, and the number of bytes of data indicating the audio format is “00011” (in the case of FIG. 4A) and “01100” (see FIG. 4). 4 (b)).
  • the portion from the 9th byte to the 9th byte from the beginning of the EDID data (the portion surrounded by a dotted line) is the data portion indicating the audio format, and the television 10 can process it.
  • a possible audio format Linear ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ PCM (maximum number of channels: 2, supported audio frequency: 32 kHz, 44.1 kHz, 48 kHz, quantization bit number: 16 bits, 20 bits, 24 bits) is shown.
  • the microcomputer unit 110 includes format information indicating an audio format (Linear PCM, AC-3, DTS, AAC) that can output an audio signal from the SPDIF / I / F 121 among the format information indicating the audio format stored in the memory 111 ( The voice format portion of the EDID data is replaced by a total of 12 bytes). That is, the microcomputer unit 110 moves the byte data after the 9E byte to the 9th byte and stores format information indicating each audio format in the portion from the 9B byte to the A6 byte. Further, the 9A byte data indicating the audio data block start identifier and the number of bytes of the audio format data is changed from “23” to “2C”.
  • format information indicating an audio format Linear PCM, AC-3, DTS, AAC
  • the 3 bytes from the 9th byte to the 9th byte are Linear PCM (maximum number of channels: 2, supported audio frequencies: 32 kHz, 44.1 kHz, 48 kHz, quantization bit number: 16 bits, 20 bits, 24 bits).
  • the 3 bytes from the 9E byte to the A0 byte indicate AC-3 (maximum number of channels: 6, supported audio frequencies: 32 kHz, 44.1 kHz, 48 kHz, maximum bit rate: 640 kbps).
  • the 3 bytes from the A1 byte to the A3 byte indicate DTS (maximum number of channels: 6, supported audio frequencies: 32 kHz, 44.1 kHz, 48 kHz, maximum bit rate: 1536 kbps).
  • the 3 bytes from the A4 byte to the A6 byte indicate AAC (maximum number of channels: 6, supported audio frequencies: 32 kHz, 44.1 kHz, 48 kHz, maximum bit rate: 640 kbps).
  • the player 30 refers to the data from the 9th byte to the A6th byte of the received EDID data in FIG.
  • the audio format to be determined is determined.
  • the player 30 determines that the television 10 can process the multi-channel audio format (that is, the TV 10 cannot process multi-channel audio from the speaker 115).
  • the player 30 outputs a multi-channel audio signal to the television 10 when reproducing the content recorded in surround.
  • the operation of the entire AV system 1 after the player 30 starts playing the content will be described.
  • the video input on the television 10 is switched to the player 30 by the remote control operation (that is, the HDMI switch 105 outputs the TMDS signal sent from the player 30 via the HDMI / I / F 122a to the HDMI receiver 104. It has become).
  • the audio output destination setting is set to output audio from the external speaker 40 by remote control operation.
  • the player 30 When the player 30 starts reproducing the content, the player 30 outputs a TMDS signal including a video signal and a multi-channel audio signal to the television 10.
  • the HDMI switch 105 of the television 10 outputs the TMDS signal sent from the player 30 via the HDMI / I / F 122a to the HDMI receiver 104.
  • the HDMI receiver 104 separates the input TMDS signal into a video signal and an audio signal, and outputs the video signal to the video processing unit 102 and the audio signal to the audio processing unit 103.
  • the video processing unit 102 displays a video on the panel 114 based on the input video signal.
  • the audio processing unit 103 outputs the audio signal to the AV amplifier 20 via the SPDIF / I / F 121 because the audio output destination setting is an external speaker.
  • the AV amplifier 20 to which the multi-channel audio signal is input outputs surround sound from the connected speaker 40.
  • the CEC processing unit 101 receives the format information indicating the format in which the AV amplifier 20 can process the audio signal through the CEC line.
  • the microcomputer unit 110 extracts an audio format capable of outputting an audio signal from the SPDIF / I / F 121 through the digital audio cable from the audio format indicated by the format information received by the CEC processing unit 101. Further, the microcomputer unit 110 rewrites the portion of the EDID data in the EDID memory 122a where the format information indicating the audio format is recorded with the format information indicating the extracted audio format.
  • the player 30 that has read the EDID data in which the format information has been rewritten supplies the television 10 with a video signal and an audio signal in a format that can be processed by the AV amplifier 20.
  • the audio signal in a format that can be processed by the AV amplifier 20 can be processed by the television 10 itself. It can be supplied from the player 30 regardless of whether or not.
  • the AV system 1 is a system in which the TV 10 is a sink device, the AV amplifier 20 is a repeater device, and the player 30 and the recorder 50 are source devices. It is not limited. That is, an AV system as shown in FIG. 5 may be configured as a modification of the AV system 1 according to the present embodiment.
  • FIG. 5 is a block diagram showing a configuration of an AV system according to a modification of the present embodiment.
  • the AV system 1 ' is a system in which the TV 10 is a repeater device, the AV amplifier 20 is a sink device, and the player 30 and the recorder 50 are source devices.
  • the player 30 is connected to one of the two HDMI I / Fs (that is, HDMI input terminals) 122a and 122b of the television 10, and the recorder 50 is connected to the other 122b. Are to be connected.
  • the AV amplifier 20 is connected to another HDMI I / F (that is, HDMI output terminal) (not shown) of the television 10.
  • the microcomputer unit 110 receives the EDID data recorded in the EDID memory of the AV amplifier 20 from the AV amplifier 20.
  • the EDID data includes format information indicating all audio formats that can be processed by the AV amplifier 20.
  • the microcomputer unit 110 stores the input EDID data in the memory 111.
  • the television 10 performs the same processing as S106 to S109 already described.
  • the microcomputer unit 110 rewrites a part of the stored EDID data for all the EDID memories (EDID memories 112a and 112b in FIG. 1). That is, the microcomputer unit 110 replaces the data portion related to the audio format in the EDID data with the format information indicating the audio format included in the EDID data stored in the memory 111.
  • the microcomputer unit 110 when the microcomputer unit 110 detects that the player 30 is HDMI-connected via the HDMI / I / F 122a, the microcomputer unit 110 transmits the EDID data recorded in the EDID memory 112a to the player 30.
  • the microcomputer unit 110 detects that the recorder 50 is HDMI-connected via the HDMI / I / F 122b, the microcomputer unit 110 transmits the EDID data recorded in the EDID memory 112b to the recorder 50.
  • the player 30 and the recorder 50 connected to one and the other of the two HDMI input terminals respectively, from the television 10 to audio format information indicating all audio formats that can be processed by the AV amplifier 20.
  • EDID data in which data relating to is rewritten is received. Therefore, the player 30 and the recorder 50 output an audio signal in an audio format that can be processed by the AV amplifier 20 to the television 10.
  • the television 10 outputs the audio signal from the HDMI output terminal to the AV amplifier 20.
  • the AV amplifier 20 is connected regardless of the audio format supported by the television 10, regardless of which of the audio formats supported by the television 10 is played back by the player 30 or the recorder 50.
  • the audio of the content can be output in a surround manner from the speaker 40.
  • the audio format for surround recording of the content reproduced by the player 30 and the recorder 50 may be any audio format supported by the AV amplifier 20.
  • the AV amplifier 20 can output the audio of the content reproduced by the player 30 or the recorder 50 from the speaker 40 even if the audio format of the content is not an audio format that can output an audio signal from SPDIF. .
  • the audio signal transmitted from the television 10 to the AV amplifier 20 passes through the HDMI cable. Therefore, the present invention can be implemented even when a television that does not include the SPDIF terminal is used instead of the television 10.
  • the microcomputer unit 110 of the television 10 may periodically monitor whether the target audio device (AV amplifier 20) is HDMI-connected.
  • the microcomputer unit 110 may perform the following processing when the HDMI connection of the target audio device is detected but no longer detected. In other words, the microcomputer unit 110 uses the format information indicating the two-channel audio format that can be processed by the television 10 for the EDID memory other than the EDID memory referred to by the target audio device, so that the data related to the audio format among the EDID data. The part may be rewritten. At this time, the microcomputer unit 110 may automatically change the audio output destination setting to a setting for outputting from the speaker 115 of the television 10.
  • the process of periodically monitoring whether the target audio device (AV amplifier 20) is HDMI-connected may be more specifically the following process. That is, the microcomputer unit 110 may transmit a command for controlling the target audio device such as volume control to the target audio device. If the microcomputer unit 110 determines that the target audio device is HDMI-connected when a response to the command is received within a certain time, and the microcomputer unit 110 does not receive a response to the command within the certain time, It may be determined that the audio device is not HDMI-connected.
  • a trigger for the television 10 to switch an audio output destination from the external speaker 40 to the speaker 115 or from the speaker 115 to the external speaker 40 is a user.
  • both the change of the audio output destination setting due to and the detection that the target audio device is connected or disconnected exist.
  • the CEC processing unit 101 transmits the audio format request command without specifying a parameter in S102.
  • the parameter may be specified.
  • the CEC processing unit 101 may transmit an audio format request command using as parameters all audio formats that can output audio signals from SPDIF.
  • the audio format indicated by the information stored in the memory 111 is an audio format that can output an audio signal from SPDIF. Therefore, in S107, the microcomputer unit 110 replaces the data portion related to the audio format in the EDID data by the information itself stored in the memory 111.
  • the audio format request command and the audio format support command are assumed to be vendor-specific CEC commands, but have functions corresponding to the audio format request command and the audio format support command among the standard commands specified in the HDMI standard. You can use commands instead.
  • the television 10 does not necessarily have to output an audio signal to the AV amplifier 20 via the SPDIF / I / F 121. That is, an audio signal may be output to the AV amplifier 20 via the HDMI / I / F 122b using an ARC (Audio Return Channel) function defined in the HDMI standard.
  • ARC Audio Return Channel
  • the display device is a television
  • the display device is not limited to the television, and may be a display.
  • the display may be with or without speakers. If the speaker is speakerless, the AV amplifier 20 may not be able to output surround sound from the speaker. In this case, there are the following advantages.
  • the audio of the content to be reproduced by the player 30 cannot be output at all using the AV amplifier.
  • the present invention is implemented in the form of a speakerless display, the audio of content to be played back by the player 30 can be output using an AV amplifier.
  • the AV amplifier and the external speaker of the television 10 are separate devices.
  • the external speaker of the television 10 may be a speaker built in the AV amplifier.
  • the television 10 and the AV amplifier 20 are connected by the HDMI cable, and the television 10 and the player 30 are connected by the HDMI cable.
  • the television 10 and the AV amplifier 20 may be configured to be connected by wireless HDMI, or the television 10 and the player 30 may be configured to be connected by wireless HDMI. That is, when a signal is transmitted by a transmission method compliant with the HDMI standard, the transmission path may be wired or wireless. Further, instead of the wireless HDMI, it may be connected through a digital communication channel via another digital communication interface such as a digital communication interface compliant with a standard other than the HDMI standard.
  • each block included in the television 10 may be configured by hardware logic. Alternatively, it may be realized by software using a CPU (Central Processing Unit) as follows.
  • CPU Central Processing Unit
  • the program code (execution format program, intermediate code program, source program) of the control program for realizing each function of the television 10 may be recorded so as to be readable by the computer.
  • the television 10 or CPU or MPU
  • the television 10 may read and execute the program code recorded on the supplied recording medium.
  • the recording medium for supplying the program code to the television 10 is, for example, a tape system such as a magnetic tape or a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, or a CD-ROM / MO / MD / DVD / CD-R.
  • a card system such as an IC card (including a memory card) / optical card, a semiconductor memory system such as a mask ROM / EPROM / EEPROM / flash ROM, or the like.
  • the program code is supplied to the television 10 via the communication network.
  • the communication network is not limited to a specific type or form as long as it can supply program codes to the television 10.
  • the Internet intranet, extranet, LAN, ISDN, VAN, CATV communication network, mobile communication network, satellite communication network, etc. may be used.
  • the transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type.
  • wired communication such as IEEE 1394, USB (Universal Serial Bus), power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared such as IrDA or remote control, Bluetooth (registered trademark), 802. 11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, etc.
  • the present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.
  • the display device accepts an instruction to process an audio signal supplied from the signal supply device, and to which of the audio signal processing device and the audio signal processing device process the audio signal.
  • An instruction receiving unit and when the instruction received by the instruction receiving unit is an instruction to cause the audio signal processing unit to process, the rewriting unit reads the format information read by the signal supply device. It is desirable to rewrite the format information representing an audio signal that can be processed by the display device.
  • the display device when the display device receives an instruction to process the audio signal by the audio signal processing means included in the display device itself, the display device outputs the format information representing the audio signal that can be processed by the display device. Let the feeding device read. That is, the format of the audio signal supplied to the display device is a format of the audio signal that can be processed by the display device.
  • the display device has an additional effect that the audio signal can be processed by both the audio signal processing means and the audio output processing device provided in the display device.
  • the display device further includes detection means for detecting that the audio signal processing device is connected to the display device, and the acquisition means detects that the audio signal processing device is connected to the display device.
  • the means detects the format information is acquired and recorded in the storage unit.
  • the instruction receiving unit receives an instruction to cause the audio signal processing unit to process, the signal supply unit It is desirable to rewrite the format information read by the apparatus with the format information recorded in the storage unit.
  • the display device further includes second detection means for detecting that the connection between the display device and the audio signal processing device has been disconnected, and when the second detection means detects disconnection,
  • the rewriting means rewrites the format information read by the signal supply device into format information representing an audio signal that can be processed by the display device.
  • the display device is in a state in which the audio signal processing device cannot process the audio signal because the connection between the display device and the audio signal processing device is disconnected,
  • the audio signal processing means of the display device processes the audio signal
  • the audio signal that can be processed by the display device is supplied from the signal supply device. Therefore, the display device has the further effect that even in the above case, the audio signal processing means provided therein can reliably process the audio signal.
  • the display device is connected to the audio signal processing device via a digital communication channel, and an audio signal supplied to the audio signal processing device is supplied via the digital communication channel.
  • the digital communication channel is preferably a communication channel through which a signal is transmitted by a transmission method compliant with the HDMI standard. Further, in the display device, the digital communication channel is an HDMI cable. Is desirable.
  • the display device has an additional effect that information can be transmitted to and from the audio signal processing device through one HDMI cable.
  • the display device is connected to the audio signal processing device via a digital audio cable, and the display device is selected from the formats indicated by the format information acquired by the acquisition unit from the audio signal processing device.
  • the apparatus further comprises extraction means for extracting a format capable of supplying an audio signal via the digital audio cable, and the rewriting means is format information indicating the format extracted by the extraction means with respect to the format information read by the signal supply apparatus. It is desirable to rewrite to
  • the display device is connected to the audio signal processing device via a digital audio cable, and the acquisition means is an audio signal format that can be processed by the audio signal processing device. It is desirable to obtain from the audio signal processing device format information indicating a format in which an audio signal can be supplied via the digital audio cable.
  • the audio signal processing device and the display device have a digital audio terminal, and the digital audio terminal of the display device and the digital audio terminal of the audio signal processing device are connected by a digital audio cable.
  • the present invention may also be an audio signal supply system including the display device, the signal supply device connected to the display device, and the audio signal processing device connected to the display device. realizable.
  • the present invention can be realized as a television receiver including the respective units included in the display device.
  • a program for operating a computer as a display device the program characterized by causing the computer to function as each of the above-mentioned means, and a computer-readable recording on which the program is recorded Media are also included in the scope of the present invention.
  • the present invention can be widely applied to televisions and displays having two or more HDMI terminals.
  • TV display device
  • CEC processing unit acquisition means
  • Audio processing unit audio signal processing means
  • Microcomputer unit writing means, detecting means, extracting means, second detecting means
  • Memory storage
  • 112a storage
  • 112b EDID memory storage
  • Remote control receiving unit instruction receiving unit
  • Speaker 121 SPDIF / I / F 122a, 122b HDMI / I / F 20
  • AV amplifier audio signal processor
  • player signal supply device

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Television Receiver Circuits (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Stereophonic System (AREA)

Abstract

La télévision (10) décrite comprend : une unité de traitement CEC (101) qui acquiert des informations de format indiquant des formats de signal audio qu'un amplificateur AV (20) peut traiter à partir de l'amplificateur (20); et une unité centrale à microprocesseur (110) qui enregistre les informations de format acquises dans une mémoire EDID (112a). L'unité centrale à microprocesseur (110) amène des données EDID incluant les informations de format enregistrées dans la mémoire EDID (112a) à être lues par un lecteur (30), et fournit un signal audio reçu à partir du lecteur (30) vers l'amplificateur (20).
PCT/JP2011/056092 2010-03-15 2011-03-15 Dispositif d'affichage, récepteur de télévision, procédé de fourniture de signal audio, système de fourniture de signal audio, programme et support d'enregistrement WO2011115130A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2010058521 2010-03-15
JP2010-058521 2010-03-15
JP2011-056858 2011-03-15
JP2011056858A JP2011217366A (ja) 2010-03-15 2011-03-15 表示装置、テレビジョン受像機、音声信号供給方法、音声信号供給システム、プログラムおよび記録媒体

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JP6009824B2 (ja) 2012-05-29 2016-10-19 株式会社東芝 電子機器、制御方法およびプログラム
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JP2008301454A (ja) * 2007-06-04 2008-12-11 Toshiba Corp オーディオデータ中継装置
WO2009016999A1 (fr) * 2007-07-30 2009-02-05 Sony Corporation Système de transmission/réception de données, dispositif de relais de données, dispositif de réception de données, procédé de relais de données et procédé de réception de données
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CN114205336A (zh) * 2020-09-01 2022-03-18 华为技术有限公司 跨设备音频播放方法、移动终端、电子设备及存储介质

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