WO2011115130A1 - Display device, television receiver, audio signal supply method, audio signal supply system, program, and recording medium - Google Patents

Display device, television receiver, audio signal supply method, audio signal supply system, program, and recording medium 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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French (fr)
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/en

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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

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

Abstract

The disclosed television (10) is provided with: a CEC processing unit (101) that acquires format information indicating audio signal formats that an AV amplifier (20) can process from the amplifier (20); and a microcomputer unit (110) that records the acquired format information to EDID memory (112a). The microcomputer unit (110) causes EDID data including the format information recorded to the EDID memory (112a) to be read to a player (30), and supplies an audio signal input from the player (30) to the amplifier (20).

Description

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Display device, television receiver, audio signal supply method, audio signal supply system, program, and recording medium
　本発明は、主に、信号供給装置に音声信号を供給させる表示装置およびそのような表示装置における音声信号供給方法に関する。 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.
　近年、デジタル放送を受信可能なデジタルテレビが急速に普及している。 In recent years, digital television capable of receiving digital broadcasts has been rapidly spreading.
　デジタルテレビは、デジタル放送される番組の映像を高精細に表示することができる。また、高精細な映像を表示可能であるという特性を生かすために、デジタルテレビにはＨＤＭＩ（High-Definition Multimedia Interface）に対応しているものも多い。 Digital TV can display high-definition images of digitally broadcast programs. In addition, in order to take advantage of the characteristic of being able to display high-definition video, many digital televisions support HDMI (High-Definition Multimedia Interface).
　ＨＤＭＩは、非圧縮デジタル形式の映像データや音声データを伝送することが可能なインターフェースである。ＨＤＭＩのデータ伝送においては、ソース機器は、シンク機器のＥＤＩＤ（Extended display identification data）メモリに記録されているフォーマットの情報をシンク機器から取得するようになっている。これにより、例えば、ＨＤＭＩ対応のデジタルテレビでは、ＥＤＩＤメモリに”1920x1280”や”1280x720”などの高精細な映像フォーマットが記録されているので、ＨＤＭＩ対応のプレーヤ（例えば、BD（Blu-ray Disc）プレーヤ）と接続することにより、プレーヤが再生するコンテンツの映像を高精細に表示することができる。 HDMI is an interface that can transmit uncompressed digital video and audio data. In the HDMI data transmission, 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. As a result, for example, in an HDMI-compatible digital TV, 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)) By connecting to a player, it is possible to display a video of content reproduced by the player with high definition.
　また、プレーヤは、ＨＤＭＩ対応のＡＶアンプと接続することにより、サラウンド録音されたコンテンツの音声を、ＡＶアンプを介してサラウンドスピーカからサラウンド出力することができる。これは、ＨＤＭＩ対応のＡＶアンプは一般にサラウンド出力に対応しており、ＡＶアンプのＥＤＩＤには、2ch L-PCMのようなステレオフォーマット以外にマルチチャンネルL-PCM,DTS-HD等のマルチチャンネルのフォーマットが記録されているからである。 In addition, 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. This is because HDMI-compatible AV amplifiers generally support surround output, and the EDID of the AV amplifier includes multi-channel L-PCM, DTS-HD, etc. in addition to stereo formats such as 2ch よ う な L-PCM. This is because the format is recorded.
　ところで、「ソース機器からシンク機器に伝送可能なデータのフォーマットはシンク機器のＥＤＩＤとして記録されているフォーマットになることが多い」というＨＤＭＩのデータ伝送の特性に鑑みて、様々な発明がなされている。 By the way, various inventions have been made in view of the characteristics of HDMI data transmission that “the format of data that can be transmitted from the source device to the sink device is often the format recorded as the EDID of the sink device”. .
　例えば、特許文献１には、自身に接続されている全てのシンク機器がサポートするフォーマット（すなわち、いずれのシンク機器のＥＤＩＤにも記録されているフォーマット）を検出し、検出したフォーマットを示す情報を各シンク機器に送信するソース機器が開示されている。 For example, 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.
　また、特許文献２には、適合していないフォーマットのデータを受信したときに、適合するフォーマットのデータをデータ送信装置に送信させるデータ受信装置が開示されている。さらに、特許文献３には、映像出力装置がサポートする映像フォーマットと自身がサポートする映像フォーマットとを比較し、両者が共にサポートする映像フォーマットのうち最も解像度が高い映像フォーマットの映像データを映像出力装置に送信させることが可能な表示装置が開示されている。 Also, 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.
　以下、デジタルテレビがシンク機器となり、ＡＶアンプおよびプレーヤがそれぞれテレビに直接接続されたソース機器となるシステムを構成した場合について考える。 Hereinafter, a case will be considered where 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.
　このシステムでは、プレーヤで再生するコンテンツの映像をデジタルテレビに表示する。また、ＨＤＭＩのＣＥＣ規格にて規定されているSystem Audio Control機能を用いることにより、コンテンツの音声をＡＶアンプに接続されたスピーカから出力することが可能である。この場合、デジタル音声ケーブルを通じて入力されたＳＰＤＩＦフォーマットの音声データに基づいて音声を出力することも可能であるし、ＡＲＣ（Audio Return Channel）によりＨＤＭＩケーブルを通じて入力されたＳＰＤＩＦフォーマットの音声データに基づいて音声を出力することも可能である。 In this system, the content video to be played back by the player is displayed on the digital TV. Also, by using 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. In this case, it is also possible to output audio based on SPDIF format audio data input via a digital audio cable, or based on SPDIF format audio data input via an HDMI cable by ARC (Audio Return Channel). It is also possible to output sound.
日本国特許公開公報「特開２００９－２１３１２１号公報（２００９年９月１７日公開）」Japanese Patent Publication “Japanese Unexamined Patent Publication No. 2009-213121 (published on September 17, 2009)” 日本国特許公開公報「特開２００８－１６０６５３号公報（２００８年７月１０日公開）」Japanese Patent Publication “Japanese Patent Laid-Open No. 2008-160653 (published July 10, 2008)” 日本国特許公開公報「特開２０１０－１４９７９号公報（２０１０年１月２１日公開）」Japanese Patent Publication “Japanese Laid-Open Patent Publication No. 2010-14979 (published on January 21, 2010)”
　しかしながら、特許文献１～３に開示された技術を用いたとしても、デジタルテレビがシンク機器となり、サラウンドに対応したＡＶアンプとプレーヤとがそれぞれテレビに直接接続されたソース機器となるシステムを構成して、サラウンド録音されたコンテンツをプレーヤに再生させた場合に、一度テレビを通したコンテンツの音声はＡＶアンプのサラウンドスピーカからサラウンド出力させることができないという問題がある。これは、デジタルテレビ自体は一般にサラウンド音声の出力に対応していない（すなわち、デジタルテレビのＥＤＩＤメモリにはマルチチャンネルの音声信号のフォーマットを示すフォーマット情報が記録されていない）からである。 However, even if the techniques disclosed in Patent Documents 1 to 3 are used, a digital TV becomes a sink device, and a system in which a surround-compatible AV amplifier and player are source devices directly connected to the TV is configured. Thus, when the content recorded in surround is played back by the player, there is a problem that the sound of the content once passed through the television cannot be output in a surround manner from the surround speakers of the AV amplifier. This is because the digital television itself generally does not support surround sound output (that is, format information indicating the format of a multi-channel audio signal is not recorded in the EDID memory of the digital television).
　本発明は、上記課題に鑑みてなされたものであり、その目的は、プレーヤなどの信号供給装置とＡＶアンプなどの音声信号処理装置とに接続される表示装置において、音声信号処理装置が処理可能なフォーマットの音声信号を、自身がそのフォーマットの音声信号を処理可能であるか否かに関わらず、信号供給装置から供給させることができる表示装置を実現することにある。 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.
　本発明に係る表示装置は、上記課題を解決するために、映像信号および音声信号を供給する信号供給装置と、上記信号供給装置から供給された音声信号を処理する音声信号処理装置とに接続され、上記映像信号の表わす映像を表示する表示装置であって、上記音声信号処理装置が処理可能な音声信号のフォーマットを示すフォーマット情報を上記音声信号処理装置から取得する取得手段と、上記表示装置に供給する音声信号のフォーマットを決定するために上記信号供給装置により読み出されるフォーマット情報を、上記取得手段が取得したフォーマット情報に書き換える書換手段と、を備えている、ことを特徴としている。 In order to solve the above problems, a display device according to the present invention 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.
　上記の構成によれば、表示装置は、音声信号処理装置が処理することが可能な音声信号のフォーマットを示すフォーマット情報を信号供給装置に読み出させることにより、信号供給装置が表示装置に供給する音声信号のフォーマットを、音声信号処理装置が処理することが可能なフォーマットに決定させる。これにより、音声信号処理装置が処理することが可能なフォーマットの音声信号を、信号供給装置から取得して音声信号処理装置に提供することが可能になる。 According to the above configuration, 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. As a result, an audio signal in a format that can be processed by the audio signal processing device can be obtained from the signal supply device and provided to the audio signal processing device.
　したがって、例えば、音声信号処理装置（例えば、ＡＶアンプ）がサラウンド音声信号を処理可能なものであれば、表示装置は、自身がサラウンド音声信号を処理可能であるか否かに関わらず、信号供給装置（例えば、プレーヤ）にサラウンド音声信号を供給させ、これを音声信号処理装置に提供することが可能になる。 Therefore, for example, if an audio signal processing device (for example, an AV amplifier) can process a surround audio signal, the display device supplies a signal regardless of whether or not it can process the surround audio signal. A device (eg, a player) can be supplied with a surround sound signal and provided to the sound signal processing device.
　本発明に係る音声信号供給方法は、上記課題を解決するために、映像信号および音声信号を供給する信号供給装置と、上記信号供給装置から供給された音声信号を処理する音声信号処理装置とに接続され、上記映像信号の表わす映像を表示する表示装置が、上記信号供給装置に音声信号を供給させる音声信号供給方法であって、上記音声信号処理装置が処理可能な音声信号のフォーマットを示すフォーマット情報を上記音声信号処理装置から取得する取得工程と、上記表示装置に供給する音声信号のフォーマットを決定するために上記信号供給装置により読み出されるフォーマット情報を、上記取得工程にて取得したフォーマット情報に書き換える書換工程と、を含んでいる、ことを特徴としている。 In order to solve the above problems, an audio signal supply method according to the present invention 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.
　上記の構成に依れば、本発明に係る音声信号供給方法は、本発明に係る表示装置と同様の作用効果を奏する。 According to the above configuration, the audio signal supply method according to the present invention has the same effects as the display device according to the present invention.
　以上のように、本発明に係る表示装置は、プレーヤなどの信号供給装置とＡＶアンプなどの音声信号処理装置とに接続される表示装置において、音声信号処理装置が処理可能なフォーマットの音声信号を、自身がそのフォーマットの音声信号を処理可能であるか否かに関わらず、信号供給装置から供給させることができるという効果を奏する。 As described above, in the display device according to the present invention, 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.
本発明の実施形態に係るテレビの構成を示すブロック図である。It is a block diagram which shows the structure of the television which concerns on embodiment of this invention. 図１に示すテレビをシンク機器とし、ＡＶアンプをリピータ機器、プレーヤおよびレコーダをソース機器とするシステムの構成を示した図である。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. 図１に示すテレビが、ＡＶアンプが処理可能な音声信号のフォーマット（音声フォーマット）を示すフォーマット情報を取得して、プレーヤに通知する処理を示すフローチャートであり、（ａ）は、テレビの起動時の動作を示すフローチャートであり、（ｂ）は、ユーザーにより音声の出力先が変更された際の動作を示すフローチャートである。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. （ａ）はテレビから音声を出力する設定になっている場合にテレビからプレーヤに送信するＥＤＩＤデータを１６進表現で示した図であり、（ｂ）は外部のスピーカから音声を出力する設定になっている場合にテレビからプレーヤに送信するＥＤＩＤデータを１６進表現で示した図である。(A) is the figure which showed the EDID data transmitted to a player from a television when it is set to output sound from a television in hexadecimal representation, and (b) is a setting to output sound from an external speaker. It is the figure which showed the EDID data transmitted from a television to a player in hexadecimal representation. 図１に示すテレビをリピータ機器とし、ＡＶアンプをシンク機器、プレーヤおよびレコーダをソース機器とするシステムの構成を示した図である。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.
　本発明の一実施形態に係るＡＶシステム１（音声信号供給システム）について、図１～図４を参照しながら以下に説明する。 An AV system 1 (audio signal supply system) according to an embodiment of the present invention will be described below with reference to FIGS.
　図２は、ＡＶシステム１のシステム構成を示すブロック図である。図２に示すように、ＡＶシステム１は、テレビ１０（表示装置）、ＡＶアンプ２０、プレーヤ３０、スピーカ４０、およびレコーダ５０によって構成されている。 FIG. 2 is a block diagram showing the system configuration of the AV system 1. As shown in FIG. 2, the AV system 1 includes a television 10 (display device), an AV amplifier 20, a player 30, a speaker 40, and a recorder 50.
　また、テレビ１０とＡＶアンプ２０とレコーダ５０とは、テレビ１０がシンク機器となりＡＶアンプ２０がリピータ機器となりレコーダ５０がソース機器となるようにＨＤＭＩケーブルにより接続されている。また、テレビ１０とＡＶアンプ２０とはＳＰＤＩＦフォーマットを伝送するデジタル音声ケーブルにより接続されており、テレビ１０からＡＶアンプ２０に出力される音声信号はデジタル音声ケーブルを通るようになっている。 Further, 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.
　同様に、テレビ１０とプレーヤ３０とは、テレビ１０がシンク機器となりプレーヤ３０がソース機器となるようにＨＤＭＩケーブルにより接続されている。 Similarly, 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.
　ＡＶアンプ２０はスピーカケーブルによりスピーカ４０と接続されている。 The AV amplifier 20 is connected to the speaker 40 by a speaker cable.
　以下、テレビ１０（表示装置）について、図１、図３および図４を参照しながら具体的に説明する。 Hereinafter, the television 10 (display device) will be specifically described with reference to FIGS. 1, 3, and 4.
　テレビ１０は、以下に説明するように、ＨＤＭＩ・Ｉ／Ｆ（インターフェース）を複数備えている。また、テレビ１０は、ＨＤＭＩのＣＥＣに対応しているが、サラウンド音声の出力をサポートしていない。さらに、テレビ１０は、テレビ１０自身に音声信号を処理させスピーカ１１５から音声を出力させるか、あるいは、ＨＤＭＩ接続されたオーディオ機器に音声信号を処理させスピーカ４０から音声を出力させるかに関する設定（以下、「音声出力先設定」と呼称する）が可能となっている。 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”).
　＜テレビ１０の構成＞
　まず、テレビ１０の構成について、図１を参照して説明する。図１はテレビ１０の構成を示すブロック図である。 <Configuration of TV 10>
First, the configuration of the television 10 will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the television 10.
　図１に示すように、本実施形態のテレビ１０は、マイコン部１１０、ＣＥＣ処理部１０１、映像処理部１０２、音声処理部１０３、ＨＤＭＩレシーバ１０４、ＨＤＭＩスイッチ１０５、メモリ１１１、ＥＤＩＤメモリ１１２ａ、１１２ｂ、リモコン受信部１１３、パネル１１４、スピーカ１１５、ＳＰＤＩＦ・Ｉ／Ｆ１２１、ＨＤＭＩ・Ｉ／Ｆ１２２ａ、１２２ｂを備えている。 As shown in FIG. 1, 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. Remote control receiving unit 113, panel 114, speaker 115, SPDIF / I / F 121, HDMI / I / F 122a, 122b.
　（ＣＥＣ処理部１０１）
　ＣＥＣ処理部１０１は、「オーディオフォーマット要求コマンド」をオーディオ機器（図１ではＡＶアンプ２０）に送信し、「オーディオフォーマット対応コマンド」を受信する。ここで、「オーディオフォーマット要求コマンド」は、オーディオ機器が処理することが可能な音声信号のフォーマットを返却するよう要求するベンダ固有のＣＥＣコマンドである。また、「オーディオフォーマット対応コマンド」は、「オーディオフォーマット対応コマンド」を受け付けたオーディオ機器が処理することが可能な音声信号のフォーマットをシンク機器に送信するためのベンダ固有のＣＥＣコマンドである。 (CEC processing unit 101)
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”. Here, 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”.
　（映像処理部１０２）
　映像処理部１０２は、放送受信部（図示せず）で受信した番組コンテンツの映像信号やＨＤＭＩレシーバ１０４から入力された映像信号を、パネル１１４に入力可能な映像信号に変換する。 (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.
　（音声処理部１０３）
　音声処理部１０３は、放送受信部で受信した番組コンテンツの音声信号やＨＤＭＩレシーバ１０４から入力された音声信号を、音声出力先設定に応じて、スピーカ１１５に入力可能な音声信号に変換する処理を行ったり、当該処理を行わずにそのままＳＰＤＩＦ・Ｉ／Ｆ１２１を介してＡＶアンプ２０に供給したりする。 (Audio processor 103)
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レシーバ１０４）
　ＨＤＭＩレシーバ１０４は、ＨＤＭＩスイッチ１０５からのＴＭＤＳ信号を入力として、映像信号を映像処理部１０２に、音声信号を音声処理部１０３に出力する。 (HDMI receiver 104)
The 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.
　（ＨＤＭＩスイッチ１０５）
　ＨＤＭＩスイッチ１０５は、ＨＤＭＩレシーバ１０４に供給するＴＭＤＳ信号を、ＨＤＭＩ・Ｉ／Ｆ１１２ａから入力されるＴＭＤＳ信号およびＨＤＭＩ・Ｉ／Ｆ１１２ｂから入力されるＴＭＤＳ信号のいずれかに切り替える。 (HDMI switch 105)
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.
　（メモリ１１１）
　メモリ１１１は、テレビ１０が処理することが可能な音声信号のフォーマットを示すフォーマット情報、または、テレビ１０にＨＤＭＩ接続されているオーディオ機器が処理することが可能な音声信号のフォーマットを示すフォーマット情報を保持する。 (Memory 111)
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.
　（ＥＤＩＤメモリ１１２ａ）
　ＥＤＩＤメモリ１１２ａは、ＨＤＭＩ・Ｉ／Ｆ１２２ａを通じて接続された外部のＨＤＭＩ機器（図１ではプレーヤ３０）が参照するＥＤＩＤデータを保持するメモリである。 (EDID memory 112a)
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.
　（ＥＤＩＤメモリ１１２ｂ）
　ＥＤＩＤメモリ１１２ｂは、ＨＤＭＩ・Ｉ／Ｆ１２２ｂを通じて接続された外部のＨＤＭＩ機器（図１ではＡＶアンプ２０）が参照するＥＤＩＤデータを保持するメモリである。 (EDID memory 112b)
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.
　（リモコン受信部１１３）
　リモコン受信部１１３、図示しないリモコンからのリモコン操作（例えば、音声信号をテレビ１０に処理させ、スピーカ１１５から音声を出力させる操作、音声信号をＡＶアンプ２０に処理させスピーカ４０から出力させる操作、映像入力切替の操作）に応じた信号を受信する。 (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.
　（パネル１１４）
　パネル１１４は、映像処理部１０２から入力される映像信号に基づいて映像を表示する。 (Panel 114)
The panel 114 displays a video based on the video signal input from the video processing unit 102.
　（スピーカ１１５）
　スピーカ１１５は、音声処理部１０３から入力される２チャンネルの音声信号に基づいてステレオ音声を出力するステレオスピーカである。 (Speaker 115)
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.
　（ＳＰＤＩＦ・Ｉ／Ｆ１２１）
　ＳＰＤＩＦ・Ｉ／Ｆ１２１は、ＳＰＤＩＦ入力端子が備わったオーディオ機器（図１ではＡＶアンプ２０）とＳＰＤＩＦ接続するためのＳＰＤＩＦ端子である。 (SPDIF / I / F121)
The SPDIF / I / F 121 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／Ｆ１２２ａ）
　ＨＤＭＩ・Ｉ／Ｆ１２２ａは、外部のソース機器（図１ではプレーヤ３０）とＨＤＭＩ接続するためのＨＤＭＩ端子である。 (HDMI / I / F122a)
The HDMI I / F 122a is an HDMI terminal for HDMI connection with an external source device (player 30 in FIG. 1).
　（ＨＤＭＩ・Ｉ／Ｆ１２２ｂ）
　ＨＤＭＩ・Ｉ／Ｆ１２２ｂは、外部のソース機器（図１ではＡＶアンプ２０）とＨＤＭＩ接続するためのＨＤＭＩ端子である。 (HDMI / I / F122b)
The HDMI I / F 122b is an HDMI terminal for HDMI connection with an external source device (the AV amplifier 20 in FIG. 1).
　（マイコン部１１０）
　マイコン部１１０は、テレビ１０の各部を制御するＣＰＵ（中央演算装置）である。マイコン部１１０は、ＣＥＣ処理部１０１がオーディオ機器（図１ではＡＶアンプ２０）から受信したオーディオフォーマット対応コマンドに含まれる音声フォーマットを示すフォーマット情報を、メモリ１１１に記録する。また、マイコン部１１０は、メモリ１１１に記録されているフォーマット情報により、該オーディオ機器に参照させるためのＥＤＩＤメモリ以外のＥＤＩＤメモリ（図１ではＥＤＩＤメモリ１１２ａ）について、保存されているＥＤＩＤデータの一部を書き換える。 (Microcomputer unit 110)
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.
　（ＡＶシステム１を構成するテレビ１０以外の機器について）
　次に、ＡＶアンプ２０、プレーヤ３０、スピーカ４０、およびレコーダ５０について、以下に説明する。 (Regarding devices other than the TV 10 constituting the AV system 1)
Next, the AV amplifier 20, the player 30, the speaker 40, and the recorder 50 will be described below.
　ＡＶアンプ２０は、ＨＤＭＩのＣＥＣに対応したオーディオ機器であり、入力される音声信号を増幅するアンプである。ＡＶアンプ２０は、AC-3,DTS,AAC、その他多数のフォーマットの音声信号に対応している。すなわち、ＡＶアンプ２０は、サラウンド形式の音声フォーマットの音声信号に対応し、ＡＶアンプ２０に接続されているサラウンドスピーカシステムからサラウンド音声を出力することができる。 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.
　また、ＡＶアンプ２０は、オーディオフォーマット要求コマンドを受信すると、自身が処理することが可能な全音声フォーマットを示すフォーマット情報をオーディオフォーマット対応コマンドに含めて、オーディオフォーマット要求コマンドの送信元に返却する。なお、オーディオフォーマット要求コマンドに１種類以上の音声フォーマットを示すパラメータが含まれている場合、パラメータで指定された音声フォーマットのうちＡＶアンプ２０が処理することが可能な全音声フォーマットを示すフォーマット情報を、オーディオフォーマット対応コマンドに含める。 Further, when receiving the audio format request command, the AV amplifier 20 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. When the audio format request command includes a parameter indicating one or more audio formats, format information indicating all audio formats that can be processed by the AV amplifier 20 among the audio formats specified by the parameters. Include in audio format compatible commands.
　プレーヤ３０は、光ディスクに記録されている映像コンテンツを再生することが可能なプレーヤであり、ＢＤプレーヤやＤＶＤプレーヤといったものが具体例として挙げられる。プレーヤ３０は、接続先のＨＤＭＩ機器がマルチチャンネルの音声フォーマットを処理することが可能であると判定した場合、映像コンテンツを再生すると、映像信号とマルチチャンネルの音声信号とをＨＤＭＩ機器に出力するようになっている。 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. When 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.
　スピーカ４０は、サラウンド音声を出力することが可能なサラウンドスピーカシステムである。 The speaker 40 is a surround speaker system capable of outputting surround sound.
　レコーダ５０は、ＨＤＤ（ハードディスクドライブ）等の記録媒体を内蔵しているレコーダであり、放送受信部で受信した番組コンテンツをＨＤＤ等の記録媒体に記録し、再生することが可能である。レコーダ５０は、接続先のＨＤＭＩ機器がマルチチャンネルの音声フォーマットを処理することが可能であると判定した場合、映像コンテンツを再生すると、映像信号とマルチチャンネルの音声信号とをＨＤＭＩ機器に出力するようになっている。 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. When 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.
　（テレビ１０の動作）
　次に、テレビ１０の動作について、図３を参照しながら以下に説明する。 (Operation of the TV 10)
Next, the operation of the television 10 will be described below with reference to FIG.
　最初に、テレビ１０が起動時に行う動作について図３（ａ）を参照しながら、以下に説明する。図３（ａ）は、テレビ１０が起動時に行う動作を示すフローチャートである。 First, the operation performed when the television 10 is activated will be described below with reference to FIG. FIG. 3A is a flowchart showing an operation performed when the television 10 is activated.
　図３（ａ）に示すように、テレビ１０が起動すると、マイコン部１１０は、各ＨＤＭＩ・Ｉ／ＦにＣＥＣ対応のオーディオ機器がＨＤＭＩ接続されているか否かを判定する（Ｓ１０１）。 As shown in FIG. 3A, 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).
　いずれのＨＤＭＩ・Ｉ／ＦにもＨＤＭＩ接続されていないと判定された場合（Ｓ１０１においてＮＯ）、Ｓ１０９の処理に進む。 If it is determined that no HDMI / I / F is connected to HDMI (NO in S101), the process proceeds to S109.
　一方、ＣＥＣ対応のオーディオ機器がＨＤＭＩ接続されているＨＤＭＩ・Ｉ／Ｆが存在すると判定された場合（Ｓ１０１においてＹＥＳ）、ＨＤＭＩ接続されているオーディオ機器（ここでは、「対象オーディオ機器」と称する）に対してオーディオフォーマット要求コマンドを送信するよう、ＣＥＣ処理部１０１に要求する。例えば、図１のようにＡＶアンプ２０がＨＤＭＩ・Ｉ／Ｆ１２２ｂにＨＤＭＩ接続されている場合には、ＡＶアンプ２０に対してオーディオフォーマット要求コマンドを送信するよう、ＣＥＣ処理部１０１に要求する。 On the other hand, when it is determined that the HDMI / I / F to which the CEC-compatible audio device is HDMI-connected exists (YES in 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. For example, when 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.
　そして、ＣＥＣ処理部１０１は、マイコン部１１０からの要求に基づいてオーディオフォーマット要求コマンドを対象オーディオ機器に送信する（Ｓ１０２）。ここで、オーディオフォーマット要求コマンドにはパラメータが指定されていないものとする。 Then, 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). Here, it is assumed that no parameter is specified in the audio format request command.
　そして、ＣＥＣ処理部１０１は、オーディオフォーマット対応コマンドを受信するまで一定期間待機する（Ｓ１０３）。 Then, the CEC processing unit 101 waits for a certain period until an audio format compatible command is received (S103).
　オーディオフォーマット対応コマンドを受信した場合（Ｓ１０３においてＹＥＳ）、ＣＥＣ処理部１０１は、受信したオーディオフォーマット対応コマンドに含まれる音声フォーマットを示すフォーマット情報をマイコン部１１０に出力し、マイコン部１１０は、入力されたフォーマット情報をメモリ１１１に格納する（Ｓ１０４）。 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).
　一方、オーディオフォーマット対応コマンドを受信しなかった場合（Ｓ１０３においてＮＯ）、ＣＥＣ処理部１０１は、受信しなかった旨をマイコン部１１０に通知し、マイコン部１１０は、2ch L-PCMフォーマットを示す情報をメモリ１１１に格納する（Ｓ１０５）。 On the other hand, when the audio format compatible command is not received (NO in S103), 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).
　その後、マイコン部１１０は、音声出力先設定が外部のスピーカから音声を出力する設定になっているか（すなわち、ＡＶアンプ２０に音声信号を処理させスピーカ４０から音声を出力させる設定になっているか）否かを判定する（Ｓ１０６）。 Thereafter, 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).
　外部のスピーカから音声を出力する設定になっていると判定された場合（Ｓ１０６においてＹＥＳ）、マイコン部１１０は、対象オーディオ機器が参照するＥＤＩＤメモリ以外のＥＤＩＤメモリ（図１では、ＥＤＩＤメモリ１１２ａ）について、保存されているＥＤＩＤデータの一部を書き換える。すなわち、マイコン部１１０は、メモリ１１１に格納された音声フォーマットを示すフォーマット情報の中から、音声信号をＳＰＤＩＦから出力可能な音声フォーマットを示すフォーマット情報を抽出する。そして、マイコン部１１０は、抽出したフォーマット情報により、ＥＤＩＤデータのうち音声フォーマットに関するデータの部分を置き換える（Ｓ１０７）。 If it is determined that the sound is set to be output from an external speaker (YES in 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).
　一方、テレビ１０自身に音声信号を処理させ、スピーカ１１５から音声を出力させる設定になっていると判定された場合（Ｓ１０６においてＮＯ）、Ｓ１０７と同様にＥＤＩＤデータの一部を書き換えるが、マイコン部１１０は、２チャンネルの音声フォーマット（テレビ１０がスピーカ１１５から音声を出力することが可能な音声フォーマット）を示すフォーマット情報によって、ＥＤＩＤデータのうち音声フォーマットに関するデータの部分を書き換える（Ｓ１０８）。 On the other hand, if it is determined that the television 10 itself is set to process the audio signal and output the sound from the speaker 115 (NO in S106), a part of the EDID data is rewritten as in S107, but 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).
　最後に、プレーヤ３０がＨＤＭＩ・Ｉ／Ｆ１２２ａを介してＨＤＭＩ接続されたことをマイコン部１１０が検出すると、マイコン部１１０は、ＥＤＩＤメモリ１１２ａに記録されているＥＤＩＤデータをプレーヤ３０に送信する（Ｓ１０９）。 Finally, 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 (S109). ).
　次に、音声出力先設定が変更された際に行うテレビ１０の動作について図３（ｂ）を参照しながら、以下に説明する。図３（ｂ）は、音声出力先設定が変更された際にテレビ１０が行う動作を示すフローチャートである。 Next, the operation of the television 10 performed when the audio output destination setting is changed will be described below with reference to FIG. FIG. 3B is a flowchart illustrating an operation performed by the television 10 when the audio output destination setting is changed.
　図３（ｂ）に示すように、マイコン部１１０は、音声出力先設定が外部のスピーカから音声を出力する設定になっているか（すなわち、ＡＶアンプ２０を用いて音声を聞く設定になっているか）否かを判定する（Ｓ１２１）。 As shown in FIG. 3B, 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).
　外部のスピーカから音声を出力する設定になっていると判定された場合（Ｓ１２１においてＹＥＳ）、マイコン部１１０は、対象オーディオ機器が参照するＥＤＩＤメモリ以外のＥＤＩＤメモリ（図１では、ＥＤＩＤメモリ１１２ａ）について、保存されているＥＤＩＤデータの一部を書き換える。すなわち、マイコン部１１０は、メモリ１１１に格納された音声フォーマットを示すフォーマット情報の中から、音声信号をＳＰＤＩＦから出力可能な音声フォーマットを示すフォーマット情報を抽出する。そして、マイコン部１１０は、抽出したフォーマット情報により、ＥＤＩＤデータのうち音声フォーマットに関するデータの部分を置き換える（Ｓ１２２）。 If it is determined that the setting is such that sound is output from an external speaker (YES in 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).
　一方、テレビ１０のスピーカ１１５から音声を出力する設定になっていると判定された場合（Ｓ１２１においてＮＯ）、Ｓ１０７と同様にＥＤＩＤデータの一部を書き換えるが、マイコン部１１０は、テレビ１０が処理することが可能な２チャンネルの音声フォーマットを示すフォーマット情報によって、ＥＤＩＤデータのうち音声フォーマットに関するデータの部分を書き換える（Ｓ１２３）。 On the other hand, when it is determined that the setting is made to output sound from the speaker 115 of the television 10 (NO in S121), a part of the EDID data is rewritten as in S107, but the microcomputer unit 110 is processed by the television 10. The data portion related to the audio format in the EDID data is rewritten with the format information indicating the two-channel audio format that can be used (S123).
　最後に、プレーヤ３０がＨＤＭＩ・Ｉ／Ｆ１２２ａを介してＨＤＭＩ接続されたことをマイコン部１１０が検出すると、マイコン部１１０は、ＥＤＩＤメモリ１１２ａに記録されているＥＤＩＤデータをプレーヤ３０に送信する（Ｓ１２４）。 Finally, 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 (S124). ).
　以上、テレビ１０の動作について説明したが、Ｓ１０７やＳ１２２における「音声信号をＳＰＤＩＦから出力可能な音声フォーマット」とは、予めテレビ１０の製造時に設定されているものである。 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.
　（ＥＤＩＤデータの書き換えについて）
　Ｓ１０７やＳ１２２におけるＥＤＩＤデータの書き換えについて、対象オーディオ機器がＡＶアンプ２０である場合を例に挙げて、図４（ａ）および図４（ｂ）を参照しながら具体的に説明する。 (About rewriting EDID data)
The rewriting of EDID data in S107 and S122 will be specifically described with reference to FIGS. 4A and 4B, taking as an example the case where the target audio device is the AV amplifier 20.
　図４（ａ）および図４（ｂ）は、それぞれ、Ｓ１０７やＳ１２２における書き換え前のＥＤＩＤデータ、書き換え後のＥＤＩＤデータの例を１６進表現で示したものである。 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.
　図４（ａ）および図４（ｂ）では、ＥＤＩＤデータの先頭から数えて９Ａバイト目がオーディオデータブロック開始の識別子と音声フォーマットを示すデータのバイト数とを示している。オーディオデータブロック開始の識別子は、先頭３ビットの”００１”であり、音声フォーマットを示すデータのバイト数は、下位５ビットの”０００１１”（図４（ａ）の場合）および”０１１００” （図４（ｂ）の場合）である。 4 (a) and 4 (b), 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)).
　図４（ａ）では、ＥＤＩＤデータの先頭から数えて９Ｂバイト目から９Ｄバイト目までの部分（点線で囲まれた部分）が音声フォーマットを示すデータの部分であり、テレビ１０が処理することが可能な音声フォーマットであるLinear PCM(最大チャンネル数：２、サポート音声周波数:32kHz,44.1kHz,48kHz、量子化ビット数：16ビット,20ビット,24ビット)を示している。 In FIG. 4A, 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 フ ォ ー マ ッ ト 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.
　マイコン部１１０は、メモリ１１１に格納された音声フォーマットを示すフォーマット情報のうちＳＰＤＩＦ・Ｉ／Ｆ１２１から音声信号を出力可能な音声フォーマット（Linear PCM、AC-3、DTS、AAC）を示すフォーマット情報（合計１２バイト）によって、ＥＤＩＤデータの音声フォーマットの部分を置き換える。すなわち、マイコン部１１０は、９Ｅバイト目以降の各バイトデータを９バイト後方に移動させるとともに、９Ｂバイト目からＡ６バイト目までの部分に各音声フォーマットを示すフォーマット情報を格納する。さらに、オーディオデータブロック開始の識別子と音声フォーマットデータのバイト数とを示す９Ａバイト目のバイトデータを”23”から” 2C”に変更する。 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”.
　このようにして書き換えられたＥＤＩＤデータは、図４（ｂ）のようになる。 EDID data rewritten in this way is as shown in FIG.
　すなわち、図４（ｂ）において、９Ｂバイト目から９Ｄバイト目までの３バイトは、Linear PCM(最大チャンネル数：２、サポート音声周波数:32kHz,44.1kHz,48kHz、量子化ビット数：16ビット,20ビット,24ビット)を示している。また、９Ｅバイト目からＡ０バイト目までの３バイトは、AC-3(最大チャンネル数：6、サポート音声周波数: 32kHz,44.1kHz,48kHz、最大ビットレート：640kbps)を示している。また、Ａ１バイト目からＡ３バイト目までの３バイトは、DTS(最大チャンネル数：6、サポート音声周波数: 32kHz,44.1kHz,48kHz、最大ビットレート：1536kbps)を示している。さらに、Ａ４バイト目からＡ６バイト目までの３バイトは、AAC(最大チャンネル数：6、サポート音声周波数: 32kHz,44.1kHz,48kHz、最大ビットレート：640kbps)を示している。 That is, in FIG. 4B, 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). Further, 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).
　以上、ＥＤＩＤデータの書き換えについて説明したが、Ｓ１０９やＳ１２５の処理により、プレーヤ３０は、受信した図４（ｂ）のＥＤＩＤデータのうち、９Ｂバイト目からＡ６バイト目までのデータを参照し、出力する音声フォーマットを判定する。この結果、プレーヤ３０は、テレビ１０がマルチチャンネルの音声フォーマットを処理できない（すなわち、テレビ１０はマルチチャンネルの音声をスピーカ１１５から出力できない）にも関わらず処理できると判定することになる。 As described above, the rewriting of the EDID data has been described. By the processing of S109 and S125, 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. As a result, 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).
　したがって、プレーヤ３０は、サラウンド録音されたコンテンツを再生すると、マルチチャンネルの音声信号をテレビ１０に出力することになる。 Therefore, the player 30 outputs a multi-channel audio signal to the television 10 when reproducing the content recorded in surround.
　以下、プレーヤ３０でコンテンツの再生が開始された後のＡＶシステム１全体の動作について説明する。なお、リモコン操作によりテレビ１０における映像入力がプレーヤ３０に切り替えられている（すなわち、ＨＤＭＩスイッチ１０５がＨＤＭＩ・Ｉ／Ｆ１２２ａを介してプレーヤ３０から送られてくるＴＭＤＳ信号をＨＤＭＩレシーバ１０４に出力するようになっている）。また、リモコン操作により音声出力先設定が外部のスピーカ４０から音声を出力する設定になっている。 Hereinafter, the operation of the entire AV system 1 after the player 30 starts playing the content will be described. Note that 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). In addition, the audio output destination setting is set to output audio from the external speaker 40 by remote control operation.
　（光ディスク再生後のＡＶシステム１全体の動作について）
　プレーヤ３０がコンテンツの再生を開始すると、プレーヤ３０は映像信号およびマルチチャンネルの音声信号を含むＴＭＤＳ信号をテレビ１０に出力する。 (About the overall operation of the AV system 1 after playing back an optical disk)
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.
　テレビ１０のＨＤＭＩスイッチ１０５は、ＨＤＭＩ・Ｉ／Ｆ１２２ａを介してプレーヤ３０から送られてきたＴＭＤＳ信号をＨＤＭＩレシーバ１０４に出力する。 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.
　ＨＤＭＩレシーバ１０４は、入力されたＴＭＤＳ信号を映像信号と音声信号とに分離し、映像信号を映像処理部１０２に、音声信号を音声処理部１０３に出力する。 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.
　映像処理部１０２は、入力された映像信号に基づいてパネル１１４に映像を表示する。一方、音声処理部１０３は、音声出力先設定が外部のスピーカになっているので、音声信号をＳＰＤＩＦ・Ｉ／Ｆ１２１を通じて、ＡＶアンプ２０に出力する。 The video processing unit 102 displays a video on the panel 114 based on the input video signal. On the other hand, 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.
　マルチチャンネルの音声信号が入力されたＡＶアンプ２０は、接続されているスピーカ４０からサラウンド音声を出力する。 The AV amplifier 20 to which the multi-channel audio signal is input outputs surround sound from the connected speaker 40.
　（テレビ１０の利点）
　以上のように、テレビ１０では、ＣＥＣ処理部１０１が、ＡＶアンプ２０が音声信号を処理することが可能なフォーマットを示すフォーマット情報を、ＣＥＣラインを通じて受信する。 (Advantages of TV 10)
As described above, in the television 10, 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.
　そして、マイコン部１１０は、ＣＥＣ処理部１０１が受信したフォーマット情報が示す音声フォーマットからＳＰＤＩＦ・Ｉ／Ｆ１２１からデジタル音声ケーブルを通じて音声信号を出力可能な音声フォーマットを抽出する。さらに、マイコン部１１０は、ＥＤＩＤメモリ１２２ａのＥＤＩＤデータのうち音声フォーマットを示すフォーマット情報が記録された部分を、抽出した音声フォーマットを示すフォーマット情報により書き換える。 Then, 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.
　フォーマット情報が書き換えられたＥＤＩＤデータを読み込んだプレーヤ３０は、映像信号と、ＡＶアンプ２０が処理することが可能なフォーマットの音声信号と、をテレビ１０に供給する。 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.
　従って、図２のように、プレーヤ３０とＡＶアンプ２０とに接続されるテレビ１０において、ＡＶアンプ２０が処理可能なフォーマットの音声信号を、テレビ１０自身がそのフォーマットの音声信号を処理可能であるか否かに関わらず、プレーヤ３０から供給させることができる。 Therefore, as shown in FIG. 2, in the television 10 connected to the player 30 and 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.
　（システム１の変形例）
　以上説明したように、本実施形態に係るＡＶシステム１は、テレビ１０をシンク機器とし、ＡＶアンプ２０をリピータ機器、プレーヤ３０およびレコーダ５０をソース機器とするシステムであるが、本発明はこれに限定されない。すなわち、本実施形態に係るＡＶシステム１の変形例として図５に示すようなＡＶシステムを構成してもよい。 (Modification of system 1)
As described above, the AV system 1 according to the present embodiment 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.
　図５は、本実施形態の変形例に係るＡＶシステムの構成を示すブロック図である。 FIG. 5 is a block diagram showing a configuration of an AV system according to a modification of the present embodiment.
　図５に示すように、変形例に係るＡＶシステム１’は、テレビ１０をリピータ機器とし、ＡＶアンプ２０をシンク機器、プレーヤ３０およびレコーダ５０をソース機器とするシステムとなっている。 As shown in FIG. 5, the AV system 1 'according to the modification 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.
　ＡＶシステム１’は、より具体的には、テレビ１０の２つのＨＤＭＩ・Ｉ／Ｆ（すなわち、ＨＤＭＩ入力端子）１２２ａ、１２２ｂの一方１２２ａには、プレーヤ３０が接続され、他方１２２ｂにはレコーダ５０が接続されるようになっている。 More specifically, in the AV system 1 ′, 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.
　また、テレビ１０の図示しないもうひとつのＨＤＭＩ・Ｉ／Ｆ（すなわち、ＨＤＭＩ出力端子）には、ＡＶアンプ２０が接続されるようになっている。 The AV amplifier 20 is connected to another HDMI I / F (that is, HDMI output terminal) (not shown) of the television 10.
　テレビ１０のＨＤＭＩ出力端子にＡＶアンプ２０が接続されると、マイコン部１１０は、ＡＶアンプ２０のＥＤＩＤメモリに記録されているＥＤＩＤデータをＡＶアンプ２０から受信する。このＥＤＩＤデータには、ＡＶアンプ２０が処理することが可能な全音声フォーマットを示すフォーマット情報が含まれている。 When the AV amplifier 20 is connected to the HDMI output terminal 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.
　そして、マイコン部１１０は、入力されたＥＤＩＤデータをメモリ１１１に格納する。 The microcomputer unit 110 stores the input EDID data in the memory 111.
　その後は、テレビ１０は、すでに説明したＳ１０６～Ｓ１０９と同様の処理を行う。 Thereafter, the television 10 performs the same processing as S106 to S109 already described.
　ただし、Ｓ１０７において、マイコン部１１０は、すべてのＥＤＩＤメモリ（図１では、ＥＤＩＤメモリ１１２ａ、１１２ｂ）について、保存されているＥＤＩＤデータの一部を書き換える。すなわち、マイコン部１１０は、メモリ１１１に格納されているＥＤＩＤデータ内に含まれている音声フォーマットを示すフォーマット情報により、ＥＤＩＤデータのうち音声フォーマットに関するデータの部分を置き換えるようになっている。 However, in S107, 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.
　また、Ｓ１０９において、プレーヤ３０がＨＤＭＩ・Ｉ／Ｆ１２２ａを介してＨＤＭＩ接続されたことをマイコン部１１０が検出すると、マイコン部１１０は、ＥＤＩＤメモリ１１２ａに記録されているＥＤＩＤデータをプレーヤ３０に送信し、レコーダ５０がＨＤＭＩ・Ｉ／Ｆ１２２ｂを介してＨＤＭＩ接続されたことをマイコン部１１０が検出すると、マイコン部１１０は、ＥＤＩＤメモリ１１２ｂに記録されているＥＤＩＤデータをレコーダ５０に送信する。 In S109, 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. When 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.
　このようにして、２つのＨＤＭＩ入力端子の一方および他方にそれぞれ接続されたプレーヤ３０およびレコーダ５０は、テレビ１０から、ＡＶアンプ２０が処理することが可能な全音声フォーマットを示すフォーマット情報に音声フォーマットに関するデータが書き換えられているＥＤＩＤデータを受信する。したがって、プレーヤ３０およびレコーダ５０は、ＡＶアンプ２０が処理することが可能な音声フォーマットの音声信号をテレビ１０に出力する。そして、テレビ１０は、音声出力先設定が外部のスピーカから音声信号を出力する設定になっている場合、ＨＤＭＩ出力端子から当該音声信号をＡＶアンプ２０に出力することになる。 In this way, 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. When the audio output destination setting is set to output an audio signal from an external speaker, the television 10 outputs the audio signal from the HDMI output terminal to the AV amplifier 20.
　したがって、ＡＶシステム１’では、プレーヤ３０およびレコーダ５０のいずれでサラウンド録音されたコンテンツを再生する場合であっても、テレビ１０がサポートする音声フォーマットの如何に関わらず、ＡＶアンプ２０は、接続されているスピーカ４０からコンテンツの音声をサラウンド出力することができる。なお、プレーヤ３０およびレコーダ５０が再生するコンテンツのサラウンド録音の音声フォーマットはＡＶアンプ２０がサポートするいずれかの音声フォーマットであればよい。すなわち、ＡＶアンプ２０は、プレーヤ３０またはレコーダ５０で再生されるコンテンツの音声を、そのコンテンツの音声フォーマットがＳＰＤＩＦから音声信号を出力可能な音声フォーマットでなくても、スピーカ４０から出力することができる。 Therefore, in the AV system 1 ′, 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. Note that 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. In other words, 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. .
　また、ＡＶシステム１’では、テレビ１０からＡＶアンプ２０へ伝送される音声信号は、ＨＤＭＩケーブルを通過する。したがって、テレビ１０の代わりに、ＳＰＤＩＦ端子を備えていないテレビを用いたとしても、本発明を実施することができる。 In the AV system 1 ′, 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.
　（付記事項１）
　なお、Ｓ１２１における判定処理の結果、外部のスピーカから音声を出力する設定になっていると判定された場合（Ｓ１２１においてＹＥＳ）、テレビ１０は、常に、以下の処理を行ってもよい。 (Appendix 1)
Note that, as a result of the determination processing in S121, when it is determined that the setting is such that sound is output from an external speaker (YES in S121), the television 10 may always perform the following processing.
　すなわち、テレビ１０のマイコン部１１０は、対象オーディオ機器（ＡＶアンプ２０）がＨＤＭＩ接続されているか否かを定期的にモニタするようにしてもよい。 That is, the microcomputer unit 110 of the television 10 may periodically monitor whether the target audio device (AV amplifier 20) is HDMI-connected.
　そして、マイコン部１１０は、対象オーディオ機器のＨＤＭＩ接続を検出していたにも関わらず、その後に検出されなくなったときに、次の処理を行ってもよい。すなわち、マイコン部１１０は、対象オーディオ機器が参照するＥＤＩＤメモリ以外のＥＤＩＤメモリについて、テレビ１０が処理することが可能な２チャンネルの音声フォーマットを示すフォーマット情報によって、ＥＤＩＤデータのうち音声フォーマットに関するデータの部分を書き換えてもよい。また、この際に、マイコン部１１０は、音声出力先設定を、テレビ１０のスピーカ１１５から出力する設定に自動的に変更してもよい。 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.
　また、対象オーディオ機器（ＡＶアンプ２０が）ＨＤＭＩ接続されているか否かを定期的にモニタする処理は、より具体的には、以下のような処理であってもよい。すなわち、マイコン部１１０が、音量制御などの対象オーディオ機器を制御するコマンドを対象オーディオ機器に送信してもよい。そして、マイコン部１１０が、一定時間内にそのコマンドに対する応答を受信した場合に対象オーディオ機器がＨＤＭＩ接続されていると判定し、一定時間内にそのコマンドに対する応答を受信しなかった場合に、対象オーディオ機器がＨＤＭＩ接続されていないと判定してもよい。 Further, 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.
　なお、テレビ１０が上記のような処理を行う場合、外部のスピーカ４０からスピーカ１１５へと、または、スピーカ１１５から外部のスピーカ４０へと、テレビ１０が音声の出力先を切り替えるトリガには、ユーザーによる音声出力先設定の変更と、対象オーディオ機器が接続または切断されたことの検出との両方が存在することになる。 When the television 10 performs the above-described processing, 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. Thus, both the change of the audio output destination setting due to and the detection that the target audio device is connected or disconnected exist.
　（付記事項２）
　また、実施形態におけるテレビ１０の動作の説明においては、Ｓ１０２においてＣＥＣ処理部１０１がパラメータを指定せずにオーディオフォーマット要求コマンドを送信するものとしたが、パラメータを指定するようにしてもよい。 (Appendix 2)
In the description of the operation of the television 10 in the embodiment, the CEC processing unit 101 transmits the audio format request command without specifying a parameter in S102. However, the parameter may be specified.
　すなわち、ＣＥＣ処理部１０１は、ＳＰＤＩＦから音声信号を出力可能な全音声フォーマットをパラメータとしてオーディオフォーマット要求コマンドを送信するようにしてもよい。この場合、メモリ１１１に格納される情報が示す音声フォーマットは、すべてＳＰＤＩＦから音声信号を出力可能な音声フォーマットである。したがって、Ｓ１０７において、マイコン部１１０は、メモリ１１１に格納される情報そのものにより、ＥＤＩＤデータのうち音声フォーマットに関するデータの部分を置き換えることになる。 That is, 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. In this case, 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.
　また、オーディオフォーマット要求コマンドおよびオーディオフォーマット対応コマンドはベンダ固有のＣＥＣコマンドであるものとしたが、ＨＤＭＩ規格において規定されている標準コマンドのうちオーディオフォーマット要求コマンドおよびオーディオフォーマット対応コマンドに相当する機能を有するコマンドで代用しても構わない。 Further, 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.
　さらに、テレビ１０は、必ずしもＳＰＤＩＦ・Ｉ／Ｆ１２１を介して音声信号をＡＶアンプ２０に出力しなくともよい。すなわち、ＨＤＭＩ規格で定められているARC（Audio Return Channel）機能を用いて、ＨＤＭＩ・Ｉ／Ｆ１２２ｂを介して音声信号をＡＶアンプ２０に出力してもよい。 Furthermore, 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.
　（付記事項３）
　また、実施形態では、表示装置がテレビである例を示したが、表示装置はテレビに限らずディスプレイであってもよい。ディスプレイはスピーカ付きでもスピーカレスでも構わない。そして、スピーカレスである場合には、ＡＶアンプ２０がスピーカからサラウンド音声を出力できないものであってもよい。この場合、以下のようなメリットがある。 (Appendix 3)
In the embodiment, an example in which the display device is a television is shown. However, 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.
　すなわち、従来のディスプレイはＥＤＩＤメモリに音声フォーマットを示すフォーマット情報を全く保持していないためにプレーヤ３０で再生するコンテンツの音声を、ＡＶアンプを用いて全く出力させることができなかった。しかし、本発明をスピーカレスのディスプレイの形態で実施すると、プレーヤ３０で再生するコンテンツの音声を、ＡＶアンプを用いて出力させることができるようになる。 That is, since the conventional display does not hold any format information indicating the audio format in the EDID memory, the audio of the content to be reproduced by the player 30 cannot be output at all using the AV amplifier. However, when 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.
　また、実施形態では、ＡＶアンプとテレビ１０の外部スピーカとを別個の装置であるものとしたが、テレビ１０の外部スピーカは、ＡＶアンプに内蔵されたスピーカであってもよい。 In the embodiment, the AV amplifier and the external speaker of the television 10 are separate devices. However, the external speaker of the television 10 may be a speaker built in the AV amplifier.
　（付記事項４）
　また、実施形態では、テレビ１０とＡＶアンプ２０とがＨＤＭＩケーブルで接続されており、テレビ１０とプレーヤ３０とがＨＤＭＩケーブルで接続されているものとしたが、本発明はこれに限定されない。テレビ１０とＡＶアンプ２０とがワイヤレスＨＤＭＩで接続されるように構成されていてもよいし、テレビ１０とプレーヤ３０とがワイヤレスＨＤＭＩで接続されるように構成されていてもよい。すなわち、ＨＤＭＩ規格に準拠した伝送方式で信号が伝送される場合、伝送路は有線であっても無線であっても構わない。また、ワイヤレスＨＤＭＩに代えて、ＨＤＭＩ規格以外の他の規格に準拠したデジタル通信インターフェース等、その他のデジタル通信インターフェースを介して、デジタル通信チャネルを通じて接続されていてもよい。 (Appendix 4)
In the embodiment, 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. However, the present invention is not limited to this. 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.
　（プログラム、記録媒体）
　最後に、テレビ１０に含まれている各ブロックは、ハードウェアロジックによって構成すればよい。あるいは、次のように、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）を用いてソフトウェアによって実現してもよい。 (Program, recording medium)
Finally, 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.
　すなわちテレビ１０の各機能を実現する制御プログラムのプログラムコード（実行形式プログラム、中間コードプログラム、ソースプログラム）をコンピュータで読み取り可能に記録していればよい。テレビ１０（またはＣＰＵやＭＰＵ）が、供給された記録媒体に記録されているプログラムコードを読み出し、実行すればよい。 That is, 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) may read and execute the program code recorded on the supplied recording medium.
　プログラムコードをテレビ１０に供給する記録媒体は、たとえば、磁気テープやカセットテープ等のテープ系、フロッピー（登録商標）ディスク／ハードディスク等の磁気ディスクやＣＤ－ＲＯＭ／ＭＯ／ＭＤ／ＤＶＤ／ＣＤ－Ｒ等の光ディスクを含むディスク系、ＩＣカード（メモリカードを含む）／光カード等のカード系、あるいはマスクＲＯＭ／ＥＰＲＯＭ／ＥＥＰＲＯＭ／フラッシュＲＯＭ等の半導体メモリ系などとすることができる。 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. Or 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.
　またテレビ１０は、通信ネットワークと接続可能に構成しても、本発明の目的を達成できる。この場合、上記のプログラムコードを、通信ネットワークを介してテレビ１０に供給する。この通信ネットワークは、テレビ１０にプログラムコードを供給できるものであればよく、特定の種類または形態に限定されない。たとえば、インターネット、イントラネット、エキストラネット、ＬＡＮ、ＩＳＤＮ、ＶＡＮ、ＣＡＴＶ通信網、移動体通信網、衛星通信網等であればよい。 Further, even if the television 10 is configured to be connectable to a communication network, the object of the present invention can be achieved. In this case, 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. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, mobile communication network, satellite communication network, etc. may be used.
　この通信ネットワークを構成する伝送媒体も、プログラムコードを伝送可能な任意の媒体であればよく、特定の構成または種類のものに限定されない。たとえば、ＩＥＥＥ１３９４、ＵＳＢ（Ｕｎｉｖｅｒｓａｌ　Ｓｅｒｉａｌ　Ｂｕｓ）、電力線搬送、ケーブルＴＶ回線、電話線、ＡＤＳＬ（Ａｓｙｍｍｅｔｒｉｃ　Ｄｉｇｉｔａｌ　Ｓｕｂｓｃｒｉｂｅｒ　Ｌｉｎｅ）回線などの有線でも、ＩｒＤＡやリモコンのような赤外線、Ｂｌｕｅｔｏｏｔｈ（登録商標）、８０２．１１無線、ＨＤＲ、携帯電話網、衛星回線、地上波デジタル網等の無線でも利用可能である。なお、本発明は、上記プログラムコードが電子的な伝送で具現化された、搬送波に埋め込まれたコンピュータデータ信号の形態でも実現され得る。 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. For example, 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. can also be used. 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.
　上記表示装置は、上記信号供給装置から供給された音声信号を処理する音声信号処理手段と、上記音声信号を上記音声信号処理装置と上記音声信号処理手段とのいずれに処理させるかの指示を受け付ける指示受付部と、をさらに備え、上記書換手段は、上記指示受付部が受け付けた指示が上記音声信号処理手段に処理させる旨の指示である場合には、上記信号供給装置により読み出されるフォーマット情報を、上記表示装置が処理可能な音声信号を表わすフォーマット情報に書き換えることが望ましい。 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.
　上記の構成によれば、表示装置は、表示装置自身が備える音声信号処理手段により音声信号を処理させる旨の指示を受け付けた場合には、表示装置が処理可能な音声信号を表わすフォーマット情報を信号供給装置に読み出させる。すなわち、表示装置に供給される音声信号のフォーマットは、表示装置が処理することが可能な音声信号のフォーマットになる。 According to the above configuration, 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.
　したがって、表示装置は、自身が備える音声信号処理手段と音声出力処理装置とのいずれにも音声信号を処理させることができるというさらなる効果を奏する。 Therefore, 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.
　上記表示装置は、上記音声信号処理装置が上記表示装置に接続されたことを検出する検出手段を更に備え、上記取得手段は、上記音声信号処理装置が上記表示装置に接続されたことを上記検出手段が検出したときに上記フォーマット情報を取得するとともに記憶部に記録し、上記書換手段は、上記指示受付部が上記音声信号処理手段に処理させる旨の指示を受け付けた場合には、上記信号供給装置により読み出されるフォーマット情報を、上記記憶部に記録したフォーマット情報に書き換えることが望ましい。 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. When the means detects, the format information is acquired and recorded in the storage unit. When 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.
　また、上記表示装置は、上記表示装置と上記音声信号処理装置との間の接続が切断されたことを検出する第２検出手段をさらに備え、上記第２検出手段が切断を検出した場合に、上記書換手段は、上記信号供給装置により読み出されるフォーマット情報を、上記表示装置が処理可能な音声信号を表わすフォーマット情報に書き換えることが望ましい。 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, Preferably, 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.
　上記の構成によれば、上記表示装置は、上記表示装置と上記音声信号処理装置との間の接続が切断されたために音声信号処理装置が音声信号を処理することが不可能な状態になり、表示装置の音声信号処理手段が音声信号を処理することになる場合、表示装置が処理可能な音声信号の供給を信号供給装置から受けることになる。したがって、上記表示装置は、上記の場合であっても、自身が備える音声信号処理手段に確実に音声信号を処理させることができるというさらなる効果を奏する。 According to the above configuration, 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, When 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.
　また、上記表示装置は、上記音声信号処理装置とは、デジタル通信チャネルを介して接続されており、上記音声信号処理装置に供給される音声信号は、上記デジタル通信チャネルを介して供給されることが望ましい。また、上記表示装置は、上記デジタル通信チャネルが、ＨＤＭＩ規格に準拠した伝送方式で信号が伝送される通信チャネルであることが望ましく、さらに、上記表示装置は、上記デジタル通信チャネルがＨＤＭＩケーブルである、ことが望ましい。 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. Is desirable. In the display device, 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.
　上記の構成によれば、表示装置は、音声信号処理装置との間の情報の伝達を、ＨＤＭＩケーブル１本を通じて行うことができるというさらなる効果を奏する。 According to the above configuration, the display device has an additional effect that information can be transmitted to and from the audio signal processing device through one HDMI cable.
　また、上記表示装置は、上記音声信号処理装置とはデジタル音声ケーブルを介して接続されており、上記取得手段が上記音声信号処理装置から取得した上記フォーマット情報が示すフォーマットの中から上記表示装置が上記デジタル音声ケーブルを介して音声信号を供給可能なフォーマットを抽出する抽出手段をさらに備え、上記書換手段は、上記信号供給装置により読み出されるフォーマット情報を、上記抽出手段が抽出したフォーマットを示すフォーマット情報に書き換えることが望ましい。 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
　また、上記表示装置は、上記音声信号処理装置とはデジタル音声ケーブルを介して接続されており、上記取得手段は、上記音声信号処理装置が処理可能な音声信号のフォーマットであって上記表示装置が上記デジタル音声ケーブルを介して音声信号を供給可能なフォーマットを示すフォーマット情報を上記音声信号処理装置から取得することが望ましい。 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.
　上記の各構成によれば、音声信号処理装置および表示装置がデジタル音声端子を備えており、かつ、表示装置のデジタル音声端子と、音声信号処理装置のデジタル音声端子と、をデジタル音声ケーブルで接続して、音声信号を表示装置から音声信号処理装置に供給する場合であっても、音声信号処理装置に確実に音声信号を処理させることができるというさらなる効果を奏する。 According to each of the above configurations, 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. Thus, even when the audio signal is supplied from the display device to the audio signal processing device, there is an additional effect that the audio signal processing device can reliably process the audio signal.
　また、本発明は、上記表示装置と、上記表示装置に接続されている上記信号供給装置と、上記表示装置に接続されている上記音声信号処理装置と、を含んでいる音声信号供給システムとしても実現できる。また、上記表示装置が備える各手段を備えていることを特徴とするテレビジョン受像機としても実現できる。 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. In addition, the present invention can be realized as a television receiver including the respective units included in the display device.
　また、本発明に係る表示装置としてコンピュータを動作させるためのプログラムであって、コンピュータを上記の各手段として機能させることを特徴とするプログラム、および、そのプログラムを記録した、コンピュータが読み取り可能な記録媒体も本発明の範疇に含まれる。 Further, a program for operating a computer as a display device according to the present invention, 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.
　本発明は上述した実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能である。すなわち、請求項に示した範囲で適宜変更した技術的手段を組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。 The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope indicated in the claims. That is, embodiments obtained by combining technical means appropriately changed within the scope of the claims are also included in the technical scope of the present invention.
　本発明は、２系統以上のＨＤＭＩ端子を備えたテレビやディスプレイに広く適用することができる。 The present invention can be widely applied to televisions and displays having two or more HDMI terminals.
　１０　　テレビ（表示装置）
　１０１　　ＣＥＣ処理部（取得手段）
　１０３　　音声処理部（音声信号処理手段）
　１１０　　マイコン部（書換手段、検出手段、抽出手段、第２検出手段）
　１１１　　メモリ（記憶部）
　１１２ａ、１１２ｂ　ＥＤＩＤメモリ
　１１３　　リモコン受信部（指示受付部）
　１１５　　スピーカ
　１２１　　ＳＰＤＩＦ・Ｉ／Ｆ
　１２２ａ、１２２ｂ　ＨＤＭＩ・Ｉ／Ｆ
　２０　　ＡＶアンプ（音声信号処理装置）
　３０　　プレーヤ（信号供給装置）
　４０　　スピーカ 10 TV (display device)
101 CEC processing unit (acquisition means)
103 Audio processing unit (audio signal processing means)
110 Microcomputer unit (rewriting means, detecting means, extracting means, second detecting means)
111 memory (storage)
112a, 112b EDID memory 113 Remote control receiving unit (instruction receiving unit)
115 Speaker 121 SPDIF / I / F
122a, 122b HDMI / I / F
20 AV amplifier (audio signal processor)
30 player (signal supply device)
40 Speaker

Claims (14)

  1. 　映像信号および音声信号を供給する信号供給装置と、上記信号供給装置から供給された音声信号を処理する音声信号処理装置とに接続され、上記映像信号の表わす映像を表示する表示装置であって、
    　上記音声信号処理装置が処理可能な音声信号のフォーマットを示すフォーマット情報を上記音声信号処理装置から取得する取得手段と、
    　上記表示装置に供給する音声信号のフォーマットを決定するために上記信号供給装置により読み出されるフォーマット情報を、上記取得手段が取得したフォーマット情報に書き換える書換手段と、を備えている、ことを特徴とする表示装置。     A display device that 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, and displays a video represented by the video signal,
    Acquisition means for acquiring format information indicating the format of an audio signal that can be processed by the audio signal processing device from the audio signal processing device;
    Rewriting means for rewriting the format information read by the signal supply apparatus to the format information acquired by the acquisition means to determine the format of the audio signal supplied to the display apparatus. Display device.
  2. 　請求項１に記載の表示装置であって、
    　上記信号供給装置から供給された音声信号を処理する音声信号処理手段と、
    　上記音声信号を上記音声信号処理装置と上記音声信号処理手段とのいずれに処理させるかの指示を受け付ける指示受付部と、をさらに備え、
    　上記書換手段は、上記指示受付部が受け付けた指示が上記音声信号処理手段に処理させる旨の指示である場合には、上記信号供給装置により読み出されるフォーマット情報を、上記表示装置が処理可能な音声信号を表わすフォーマット情報に書き換えることを特徴とする表示装置。     The display device according to claim 1,
    Audio signal processing means for processing the audio signal supplied from the signal supply device;
    An instruction receiving unit for receiving an instruction on which of the audio signal processing device and the audio signal processing means to process the audio signal;
    When the instruction received by the instruction receiving unit is an instruction to cause the audio signal processing means to process, the rewriting unit is configured to process the format information read out by the signal supply device with audio that can be processed by the display device. A display device characterized by rewriting to format information representing a signal.
  3. 　請求項２に記載の表示装置であって、
    　上記音声信号処理装置が上記表示装置に接続されたことを検出する検出手段を更に備え、
    　上記取得手段は、上記音声信号処理装置が上記表示装置に接続されたことを上記検出手段が検出したときに上記フォーマット情報を取得するとともに記憶部に記録し、
    　上記書換手段は、上記指示受付部が上記音声信号処理手段に処理させる旨の指示を受け付けた場合には、上記信号供給装置により読み出されるフォーマット情報を、上記記憶部に記録したフォーマット情報に書き換えることを特徴とする表示装置。     The display device according to claim 2,
    Further comprising detection means for detecting that the audio signal processing device is connected to the display device;
    The acquisition means acquires the format information when the detection means detects that the audio signal processing apparatus is connected to the display device, and records the format information in a storage unit,
    The rewriting unit rewrites the format information read by the signal supply device with the format information recorded in the storage unit when the instruction receiving unit receives an instruction to cause the audio signal processing unit to process. A display device.
  4. 　請求項３に記載の表示装置であって、
    　上記表示装置と上記音声信号処理装置との間の接続が切断されたことを検出する第２検出手段をさらに備え、
    　上記第２検出手段が切断を検出した場合に、上記書換手段は、上記信号供給装置により読み出されるフォーマット情報を、上記表示装置が処理可能な音声信号を表わすフォーマット情報に書き換えることを特徴とする表示装置。     The display device according to claim 3,
    A second detecting means for detecting that the connection between the display device and the audio signal processing device is disconnected;
    When the second detection means detects disconnection, the rewriting means rewrites the format information read by the signal supply device to format information representing an audio signal that can be processed by the display device. apparatus.
  5. 　請求項１から４のいずれか１項に記載の表示装置であって、
    　上記音声信号処理装置とは、デジタル通信チャネルを介して接続されており、
    　上記音声信号処理装置に供給される音声信号は、上記デジタル通信チャネルを介して供給されることを特徴とする表示装置。     The display device according to any one of claims 1 to 4,
    The audio signal processing device is connected via a digital communication channel,
    An audio signal supplied to the audio signal processing device is supplied via the digital communication channel.
  6. 　上記デジタル通信チャネルは、ＨＤＭＩ規格に準拠した伝送方式で信号が伝送される通信チャネルである、ことを特徴とする請求項５に記載の表示装置。 The display device according to claim 5, wherein the digital communication channel is a communication channel through which a signal is transmitted by a transmission method compliant with the HDMI standard.
  7. 　上記デジタル通信チャネルはＨＤＭＩケーブルである、ことを特徴とする請求項６に記載の表示装置。 The display device according to claim 6, wherein the digital communication channel is an HDMI cable.
  8. 　請求項１から７のいずれか１項に記載の表示装置であって、
    　上記音声信号処理装置とはデジタル音声ケーブルを介して接続されており、
    　上記取得手段が上記音声信号処理装置から取得した上記フォーマット情報が示すフォーマットの中から上記表示装置が上記デジタル音声ケーブルを介して音声信号を供給可能なフォーマットを抽出する抽出手段をさらに備え、
    　上記書換手段は、上記信号供給装置により読み出されるフォーマット情報を、上記抽出手段が抽出したフォーマットを示すフォーマット情報に書き換えることを特徴とする表示装置。     The display device according to any one of claims 1 to 7,
    The audio signal processing device is connected via a digital audio cable,
    An extraction means for extracting a format in which the display device can supply an audio signal via the digital audio cable from the format indicated by the format information acquired by the acquisition means from the audio signal processing device;
    The display device according to claim 1, wherein the rewriting means rewrites the format information read by the signal supply device to format information indicating the format extracted by the extraction means.
  9. 　請求項１から８のいずれか１項に記載の表示装置であって、
    　上記音声信号処理装置とはデジタル音声ケーブルを介して接続されており、
    　上記取得手段は、上記音声信号処理装置が処理可能な音声信号のフォーマットであって上記表示装置が上記デジタル音声ケーブルを介して音声信号を供給可能なフォーマットを示すフォーマット情報を上記音声信号処理装置から取得することを特徴とする表示装置。     The display device according to any one of claims 1 to 8,
    The audio signal processing device is connected via a digital audio cable,
    The acquisition means obtains format information indicating the format of the audio signal that can be processed by the audio signal processing device and the display device can supply the audio signal via the digital audio cable from the audio signal processing device. A display device characterized by acquiring.
  10. 　請求項１から９のいずれか１項に記載の表示装置が備える各手段を備えていることを特徴とするテレビジョン受像機。 A television receiver comprising: each means included in the display device according to any one of claims 1 to 9.
  11. 　請求項１から９のいずれか１項に記載の表示装置と、上記表示装置に接続されている上記信号供給装置と、上記表示装置に接続されている上記音声信号処理装置と、を含んでいる音声信号供給システム。 The display device according to claim 1, the signal supply device connected to the display device, and the audio signal processing device connected to the display device. Audio signal supply system.
  12. 　映像信号および音声信号を供給する信号供給装置と、上記信号供給装置から供給された音声信号を処理する音声信号処理装置とに接続され、上記映像信号の表わす映像を表示する表示装置が、上記信号供給装置に音声信号を供給させる音声信号供給方法であって、
    　上記音声信号処理装置が処理可能な音声信号のフォーマットを示すフォーマット情報を上記音声信号処理装置から取得する取得工程と、
    　上記表示装置に供給する音声信号のフォーマットを決定するために上記信号供給装置により読み出されるフォーマット情報を、上記取得工程にて取得したフォーマット情報に書き換える書換工程と、を含んでいる、ことを特徴とする音声信号供給方法。     A display device that 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, and that displays a video represented by the video signal, An audio signal supply method for supplying an audio signal to a supply device,
    An acquisition step of 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;
    A rewriting step of rewriting the format information read by the signal supply device to the format information acquired in the acquisition step in order to determine the format of the audio signal supplied to the display device, Audio signal supply method.
  13. 　請求項１から９のいずれか１項に記載の表示装置としてコンピュータを動作させるプログラムであって、コンピュータを上記の各手段として機能させるためのプログラム。 A program for causing a computer to operate as the display device according to any one of claims 1 to 9, wherein the program causes the computer to function as each of the above means.
  14. 　請求項１３に記載のプログラムを記録しているコンピュータ読み取り可能な記録媒体。 A computer-readable recording medium in which the program according to claim 13 is recorded.
PCT/JP2011/056092 2010-03-15 2011-03-15 Display device, television receiver, audio signal supply method, audio signal supply system, program, and recording medium WO2011115130A1 (en)

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