JP2008028950A - Display apparatus, acoustic apparatus, av system, and sound reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to reproduce sound components of multisounds by using both of an AV amplifier and a TV, when the acoustic apparatus (AV amplifier) and the display apparatus (TV) are connected by digital connection such as HDMI and images having multisounds are reproduced. <P>SOLUTION: The TV 40 is provided with a speaker 49 for reproducing one or more sound components, and an EDID 45 for setting sound component information concerned with sound components to be reproduced from the speaker 49. The AV amplifier 20 is provided with a speaker 30 for reproducing a plurality of sound components, an HDMI receiver 22 for inputting a sound signal composed of a plurality of sound components, and a sound selector 28 for selectively distributing a plurality of inputted sound signals into sound components reproduced from the speaker 30, and sound components reproduced from the speaker 49 through an HDMI 2. A sound selector 28 selects the sound components reproduced from the speaker 49 in accordance with the sound component information set in the EDID 45. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device, an audio device, an AV system, and an audio reproduction method, and more specifically, a display device having a function of reproducing multi-channel audio via a digital interface such as HDMI (High Definition Multimedia Interface), The present invention relates to an audio device, an AV (Audio Video) system, and a sound reproduction method using the AV system.

  2. Description of the Related Art Conventionally, in an AV system composed of a DVD player, an AV amplifier, a television broadcast receiver, and the like, in order to reproduce more realistic sound, for example, two or more channels such as 5.1 channel and 6.1 channel There is provided a surround system that reproduces multi-channel audio having the audio components. In the case of the 5.1 channel, a left (FL) front left speaker, a right (FR) front right speaker, a center (FC) front speaker, and a left (RL) provided behind the viewer. It is composed of six audio components corresponding to a rear left speaker, a right (RR) speaker, and a super woofer (LFE: Low Frequency Effect) speaker. It is composed of 7 channels, which are the audio component plus the audio component for the RC (Rear Center) speaker provided behind the viewer.

  For example, Patent Document 1 discloses a system in which surround sound can be played back by a multi-channel audio signal playback device having a DVD playback unit. Yes. This multi-channel sound signal reproducing apparatus is a unit in which a DVD, CD, radio, etc., and a speaker can be integrated and transported, and is connected to a television receiver via an IEEE 1394 or USB interface. The television receiver speaker is the main speaker, and the speaker of the other audio equipment is the sub-speaker, which can be controlled from the main body of the multi-channel sound signal reproducing apparatus.

  The multi-channel sound signal reproducing device described in Patent Document 1 is connected to a television by IEEE1394 or USB. By using this IEEE 1394, digital connection between AV devices is possible. However, since IEEE 1394 does not have a function to perform inter-device authentication, even an AV device compliant with the standard is not compatible between manufacturers. The connection between devices was not guaranteed.

  In contrast, the HDMI standard, which is one of digital connection interface standards having an authentication function between AV devices, is known. This HDMI is a further development of the DVI (Digital Visual Interface) standard, which is an interface for high-speed transmission of digitized video signals between a computer body and a display. Is done. In response to changes in digitalization of TV broadcasts and switching of display devices to flat panels, this HDMI is used between home and output devices such as STB (Set Top Box), DVD player (recorder), and HDD recorder in the home. The purpose is to connect digitally.

  In this HDMI, a function for transmitting an audio signal and a control signal is added to satisfy the demand for TV use. The audio signal is inserted during the blanking period of the video signal and transmitted simultaneously with the video signal. In the past, multiple cables were used for video, audio, and control signals for connection between devices, but only one HDMI cable was required, and control signals are compatible with bidirectional transmission. For example, the entire AV system can be operated with a single remote controller by relaying a control signal from the display to an output device such as an STB or a DVD player connected via HDMI.

  In this way, prevention of duplication becomes more important when content is digitally transmitted. Therefore, HDMI employs HDCP (High-bandwidth Digital Contents Protection) as an unauthorized copy prevention function to prevent unauthorized copying.

  Furthermore, in consideration of user convenience, HDMI incorporates measures such as downsizing of the connector and simplification of handling. For example, a hot plug function that enables cable insertion / removal even during operation, and a DDC / CI (Display Data Channel / Command Interface) function that automatically sets the optimal screen resolution are specified. You can connect to each other without any special knowledge.

By using this HDMI, digitally connected DVD players (playback devices), AV amplifiers (sound devices), and television broadcast receivers (display devices) that have been mutually authenticated, and multi-sound sound reproduction with a sense of presence can be realized. An easy-to-use system can be constructed.
JP 2002-64900 A

  However, when a DVD player, an AV amplifier, and a TV are connected by HDMI connection and a video having multi-surround audio sent from the DVD player is played back via the AV amplifier, the multi-sound audio component is played back by the AV amplifier. And output from the speaker of the AV amplifier. Only video is output from the AV amplifier to the television, and no audio is output. For this reason, sound from a display device such as a television is silent, that is, no sound is output from a television speaker and is not used at all, and the television speaker is not effectively utilized.

  Further, according to the invention described in Patent Document 1 described above, it is possible to control the speaker of another audio device (television) from one device (multi-channel audio signal reproduction device), but depending on the characteristics of the audio signal. Thus, it has not been possible to selectively distribute audio components (eg, center component, surround component, etc.) to the television speakers.

The present invention has been made in view of the above circumstances, and connects an audio device (AV amplifier) and a display device (TV) by digital connection such as HDMI, and has multi-surround sound from a DVD player or the like. When video is played back via an AV amplifier, multi-sound audio components can be played back using both the AV amplifier and the TV.
It is another object of the present invention to enable audio components (for example, a center component, a surround component, etc.) to be selectively distributed to television-side speakers according to the characteristics of multi-surround audio signals.

  In order to solve the above-described problem, a first technical means of the present invention is a display device including a connection unit that connects a plurality of audio components that can reproduce audio components, and reproduces one or more audio components. Audio component information setting unit for setting audio component information relating to an audio component to be reproduced from the audio reproduction unit; and audio components corresponding to the audio component information set in the audio component information setting unit Receiving means for receiving from the apparatus via the connecting means, and the sound reproducing means reproduces the sound component received by the receiving means.

  The second technical means includes, in the first technical means, an OSD processing means for OSD-displaying a screen for selecting a sound component to be reproduced from the sound reproducing means, and the sound component selected from the screen according to a user operation. The information is set in the sound component information setting means.

  The third technical means accesses the audio component information setting means to the acoustic device when the audio component information is set in the audio component information setting means in the first or second technical means. It is characterized by having means for instructing to come.

  A fourth technical means is any one of the first to third technical means, wherein the connecting means is means for performing connection in accordance with an HDMI standard, and the audio component information setting means is configured to output audio component information. It is characterized by being EDID including.

  A fifth technical means is an acoustic device including a connection unit that connects to a display device that can reproduce one or more audio components, and an audio reproduction unit that reproduces a plurality of audio components. An audio input means for inputting the audio signal, and an audio that selectively distributes the input audio signals to an audio component to be reproduced from the audio reproduction means and an audio component to be reproduced from the display device via the connection means Component selection means, wherein the sound component selection means selects sound components to be reproduced from the display device in accordance with the sound component information set in the display device.

  A sixth technical means is the fifth technical means, wherein the connection means is means for connection according to an HDMI standard, and the audio component information set in the display device is audio component information included in EDID. It is characterized by being.

A seventh technical means is an acoustic device including a connection unit that connects to a display device that can reproduce one or more audio components, and an audio reproduction unit that reproduces a plurality of audio components. Audio input means for inputting the audio signal and the audio component information included in the audio signal, audio components for reproducing the input plurality of audio signals from the audio reproduction means, and reproduction from the display device via the connection means Audio component selection means for selectively distributing the audio component to be
The audio component information included in the audio signal is rewritten in correspondence with the audio component reproduced from the display device selected by the audio component selection means.

  An eighth technical means is the seventh technical means, characterized in that the connection means is means for performing connection according to the HDMI standard.

  Ninth technical means is an AV system in which a display device and an audio device are connected via connection means, and the display device includes first audio reproduction means for reproducing one or more audio components; Audio component information setting means for setting audio component information relating to an audio component to be reproduced from the first audio reproduction means, and the acoustic device comprises: a second audio reproduction means for reproducing a plurality of audio components; Audio input means for inputting an audio signal composed of audio components, audio components for reproducing the inputted plural audio signals from the second audio reproduction means, and reproduction from the first audio reproduction means via the connection means Audio component selection means for selectively allocating to the audio component to be played, wherein the audio component selection means reproduces from the first audio reproduction means according to the audio component information set in the audio component information setting means It is obtained by and selects the audio component to.

  A tenth technical means is an AV system in which a display device and an acoustic device are connected via a connecting means, and the display device includes a first sound reproducing means for reproducing one or more sound components, The acoustic apparatus includes: a second sound reproducing unit that reproduces a plurality of sound components; a sound input unit that inputs a sound signal composed of a plurality of sound components and sound component information included in the sound signal; Audio component selection means for selectively allocating the audio signal to be reproduced from the second audio reproduction means and the audio component to be reproduced from the first audio reproduction means via the connection means, The audio component information included in the audio signal is rewritten in correspondence with the audio component to be reproduced from the first audio reproduction unit selected by the audio component selection unit.

  According to an eleventh technical means, in the ninth or tenth technical means, the display device comprises receiving means for receiving the audio component selected by the audio component selecting means from the acoustic device via the connecting means. The first sound reproducing means reproduces the sound component received by the receiving means.

  A twelfth technical means includes a display device including a first sound reproducing unit that reproduces one or more audio components, and an acoustic device including a second audio reproducing unit that reproduces a plurality of audio components. An audio reproduction method for an AV system in which the display device and the acoustic device are connected via a connection unit, wherein the display device stores audio component information relating to an audio component to be reproduced from the first audio reproduction unit. A sound component information setting step for setting, wherein the acoustic device inputs a sound signal composed of a plurality of sound components, and causes the second sound reproducing means to reproduce the input sound signals. A sound component selecting step of selectively distributing the sound component and the sound component to be reproduced from the first sound reproducing means via the connecting means, wherein the sound component selecting step comprises: According to the voice component information set by the broadcast setting step is obtained by means selects the audio component to be reproduced from the first audio reproduction unit.

  A thirteenth technical means includes a display device including a first sound reproducing unit that reproduces one or more audio components, and an acoustic device including a second audio reproducing unit that reproduces a plurality of audio components. An audio reproduction method for an AV system in which the display device and the audio device are connected via a connection unit, wherein the audio device includes an audio signal composed of a plurality of audio components and audio component information included in the audio signal. A voice input step for inputting the audio signal, a voice component to be played back from the second voice playback means, and a voice component to be played back from the first voice playback means via the connection means Audio component selection step for redistribution and rewriting step for rewriting the audio component information included in the audio signal in correspondence with the audio component to be reproduced from the selected first audio reproduction means It is obtained by further comprising a.

  A fourteenth technical means comprises a receiving step in the twelfth or thirteenth technical means, wherein the display device receives the audio component selected in the audio component selecting step from the acoustic device via the connecting means. The sound component received in the receiving step is reproduced from the first sound reproducing means.

  According to the present invention, when an audio device (AV amplifier) and a display device (television) are connected by digital connection such as HDMI and a video having multi-surround sound from a DVD player or the like is reproduced via the AV amplifier, Since surround sound components can be reproduced using both the AV amplifier and the television, the television speakers can be used effectively.

  In addition, since audio components (for example, center component, surround component, etc.) can be selectively distributed to television side speakers according to the characteristics of multi-surround audio signals, for example, if the television is an underspeaker type, the center component is If it is a speaker type, an optimal audio | voice component can be distributed according to a speaker position, such as a surround component.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a display device, an audio device, an AV system, and an audio reproduction method using the AV system according to the invention will be described with reference to the accompanying drawings. Although the present invention is applied to HDMI as a representative example, it may be applied to other digital interfaces such as DVI and IEEE1394.

  FIG. 1 is a block diagram showing a configuration example of an AV system according to an embodiment of the present invention, in which 1, 2 are HDMI cables, 10 is a DVD player, 20 is an AV amplifier, and 40 is a television broadcast receiver. (TV). The DVD player 10 and the AV amplifier 20 are digitally connected via the HDMI cable 1, and the AV amplifier 20 and the TV 40 are digitally connected via the HDMI cable 2. In the present embodiment, the playback device is exemplified as a DVD player, the sound device as an AV amplifier, and the display device as a television broadcast receiver. However, the present invention is not limited to these specific examples.

  The DVD player 10 corresponds to a source device in the HDMI standard. Besides this DVD player, for example, an STB (set top box), a DVD recorder, an HDD recorder, a digital video camera, or the like capable of supplying video / audio signals If it is. The TV 40 corresponds to a sink device according to the HDMI standard. In addition to the TV, for example, a monitor or a projector such as an LCD or a PDP may be used as long as it can receive and output a video / audio signal. The AV amplifier 20 corresponds to a relay device according to the HDMI standard, and has both functions of inputting and outputting video / audio signals. In this embodiment, a part of the audio signal and the video signal are sent to the TV 40. Relay.

  The HDMI cables 1 and 2 transmit TMDS (Transition Minimized Differential Signaling) lines (digital signal transfer lines) and EDID (Extended Display Identification Data) for transmitting video and audio signals, which are digital signals, in a differential manner. A DDC line that is used for HDCP authentication and configured by a bidirectional I2C bus and the like, and a CEC line that is a bidirectional bus for transmitting a CEC (Consumer Electronics Control) command as a common control signal between devices are included. Composed. CEC is a protocol for controlling a device connected via HDMI, and the CEC command is a control signal based on the CEC protocol.

  The TMDS line is a serial transmission line, and includes, for example, three data transmission lines for each channel of red (R), green (G), and blue (B), and one clock transmission line. The video signal decomposed into R, G and B is transmitted as a baseband signal in the transmission path, and the audio signal is inserted in the blanking period of the video signal and transmitted simultaneously with the video signal. HDMI also supports transmission of multi-surround audio signals such as 5.1 ch and 6.1 ch, and can simultaneously transmit multi-surround audio signals by inserting them into video signals.

  The DVD player 10 includes an HDMI transmitter 11, an HDMI controller 12, a CPU 13, a CEC controller 14, an HDMI interface (HDMI I / F) 15, and a CEC interface (CEC I / F) 151, and an AV amplifier via the HDMI cable 1 20.

  The HDMI I / F 15 is an HDMI terminal for connecting the HDMI cable 1 and connects a TMDS line, a DDC line, and a CEC line accommodated in the HDMI cable 1, respectively. Thereby, the DVD player 10 and the AV amplifier 20 are HDMI-connected.

  The HDMI transmitter 11 reads the video data recorded on the DVD 16 and the multi-surround audio data, inserts the multi-surround audio signal into the blanking period of the video signal, and converts the video signal into which the audio signal has been inserted into HDMI. Convert to transmission format. Then, the converted video / audio signal is transmitted to the AV amplifier 20 via the TMDS line. Here, a decoder (not shown) is provided after the DVD 16 and before the HDMI transmitter 11, and the compressed video signal recorded on the DVD 16 is decoded and then input to the HDMI transmitter 11. The operation of the HDMI transmitter 11 is controlled by the HDMI controller 12.

  The CEC I / F 151 connects the CEC line in the HDMI cable 1 and enables bidirectional communication of CEC commands with the AV amplifier 20 or the TV 40. The operation of the CEC I / F 151 is controlled by the CEC controller 14, and an HDMI-connected device can be controlled by a CEC command. For example, control such as turning on the power by transmitting a CEC command instructing power-on from one device (TV 40) to the other device (DVD player 10 and / or AV amplifier 20) in the standby state. Can be performed. In the case of CEC, since the logical address (device type) and physical address (device position) of each HDMI-connected device are acquired, a CEC command is transmitted to each device by specifying this logical address and physical address. can do.

  The CPU 13 is connected to the HDMI controller 12 and the CEC controller 14 and controls the operation of each controller. Further, the memory storing the EDID (EDID 25 described later) of the AV amplifier 20 is accessed via the DDC line, and the EDID of the AV amplifier 20 is acquired. This EDID includes information (for example, 5.1ch) about audio components that can be output from the AV amplifier 20. The CPU 13 controls the HDMI controller 12 to output an audio signal corresponding to the audio component information acquired from this EDID. Further, the CPU 13 performs HDCP authentication with the AV amplifier 20 using the DDC line, and determines whether the video / audio signal may be output to the AV amplifier 20. As a result of this determination, the video / audio signal is output to the AV amplifier 20 only when it is authenticated.

  Next, the AV amplifier 20 includes an HDMI I / F 21, 31, an HDMI receiver 22, an HDMI transmitter 23, an HDMI controller 24, an EDID 25, a CPU 26, a CEC controller 27, an audio selector 28, an audio amplifier 29, a speaker 30, and a CEC I / O. F211 and 311 are provided, connected to the AV amplifier 20 via the HDMI cable 1, and connected to the TV 40 via the HDMI cable 2.

  The HDMI I / F 21 corresponds to the connection means of the present invention, is an HDMI terminal for connecting the HDMI cable 1, and connects the TMDS line, DDC line, and CEC line accommodated in the HDMI cable 1, respectively. . Thereby, the DVD player 10 and the AV amplifier 20 are HDMI-connected. Similarly, the HDMI I / F 31 is an HDMI terminal for connecting the HDMI cable 2 and connects a TMDS line, a DDC line, and a CEC line accommodated in the HDMI cable 2, respectively. As a result, the AV amplifier 20 and the TV 40 are HDMI-connected.

  The HDMI receiver 22 corresponds to the audio input means of the present invention, receives and separates the video / audio signal transmitted from the DVD player 10 (HDMI transmitter 11), outputs the video signal to the HDMI transmitter 23, and multi-surround audio. The signal is output to the audio selector 28. The operation of the HDMI receiver 22 is controlled by the HDMI controller 24. In this example, the audio signal transmitted from the DVD player 10 is a 5.1 ch multi-surround audio signal.

  The audio selector 28 corresponds to the audio component selection means of the present invention, and from the input 5.1ch multi-surround audio signal, for example, from the speaker 301 located on the front left (FL) of the viewer according to the control from the CPU 26. Audio component FL to be output, audio component FR to be output from the speaker 302 located on the front right (FR), audio component RL to be outputted from the speaker 303 located on the rear left (RL), speaker 304 located on the rear right (RR) Audio component RR to be output from, and audio component LFE output from super woofer (LFE) speaker 305 are selected, and each selected audio component is output to audio amplifier 29.

  The audio amplifier 29 outputs the audio components FL, FR, RL, RR, LFE from the audio selector 28 to the corresponding speakers 30, respectively. A plurality of speakers 30 corresponding to these audio components correspond to audio reproduction means (second audio reproduction means) of the AV amplifier 20.

  In addition, the audio selector 28 outputs an audio component FC to be output from, for example, a speaker (here, the speaker of the TV 40) located at the front center (FC) of the viewer from the input multi-surround audio signal according to the control from the CPU 26. The selected audio component FC is output to the HDMI transmitter 23.

  The HDMI transmitter 23 inserts the audio component FC from the audio selector 28 during the blanking period of the video signal from the HDMI receiver 22, and converts the video signal with the audio component FC inserted into an HDMI transmission format. Then, the converted video / audio signal is transmitted to the TV 40 via the TMDS line. The operation of the HDMI transmitter 23 is controlled by the HDMI controller 24.

  The CEC I / F 211 connects the CEC line in the HDMI cable 1 and enables bidirectional communication of CEC commands with the DVD player 10. Further, the CEC I / F 311 connects the CEC line in the HDMI cable 2 and enables bidirectional communication of CEC commands with the TV 40. The operations of the CEC I / Fs 211 and 311 are controlled by the CEC controller 27.

  The CPU 26 is connected to the HDMI controller 24, the CEC controller 27, and the audio selector 28, and controls the operation of each unit. In addition, the EDID of the TV 40 is acquired by accessing a memory storing the EDID of the TV 40 (EDID 45 described later) via the DDC line. This EDID includes information about audio components that can be output from the TV 40 (for example, audio component FC). The CPU 26 controls the audio selector 28 so as to select an audio signal corresponding to the audio component information acquired from this EDID. The detailed configuration of the audio selector 28 will be described later.

  The CPU 26 controls the HDMI controller 24 to output the audio component FC selected by the audio selector 28. Further, the CPU 26 performs HDCP authentication with the TV 40 using the DDC line, and determines whether the video / audio signal may be output to the TV 40. As a result of this determination, the video / audio signal is output to the TV 40 only when it is authenticated.

  Next, the TV 40 includes an HDMI I / F 41, an HDMI receiver 42, an HDMI controller 43, a CPU 44, an EDID 45, a CEC controller 46, an OSD processing unit 47, a display unit 48, a speaker 49, and a CEC I / F 411, and an HDMI cable 2 Is connected to the AV amplifier 20 via the.

  The HDMI I / F 41 corresponds to the connection means of the present invention, is an HDMI terminal for connecting the HDMI cable 2, and connects the TMDS line, DDC line, and CEC line housed in the HDMI cable 2, respectively. . Thereby, the TV 40 and the AV amplifier 20 are HDMI-connected.

  The HDMI receiver 42 corresponds to the receiving means of the present invention, receives and separates the video / audio signal transmitted from the AV amplifier 20 (HDMI transmitter 23), outputs the video signal to the display unit 48, and outputs the audio component FC. The sound is output to the sound speaker 49. The operation of the HDMI receiver 42 is controlled by the HDMI controller 43.

  The CEC I / F 411 connects the CEC line in the HDMI cable 2 and enables bidirectional communication of CEC commands with the AV amplifier 20. The operation of the CEC I / F 411 is controlled by the CEC controller 46.

  The CPU 44 is connected to the HDMI controller 43 and the CEC controller 46, and controls the operation of each controller. Further, the CPU 44 accesses a memory storing the EDID 45 corresponding to the sound component information setting means of the present invention, and performs a process of rewriting the contents of the EDID 45. The EDID 45 includes information on the sound component that can be output from the TV 40, and the sound component information is rewritten to, for example, the sound of the center component (sound component FC). Thus, the AV amplifier 20 (CPU 26) can control the audio selector 28 so as to select an audio signal corresponding to the audio component information acquired from the EDID 45.

  The OSD processing unit 47 corresponds to the OSD processing means of the present invention, is connected to the CPU 44, and performs OSD display such as various menu displays. When the OSD processing unit 47 performs the rewriting process of the EDID 45, the OSD display of the audio component selection screen is performed, and the audio component desired by the viewer is selected according to an operation instruction from the R / C (remote controller) 50. As a result, the selected audio component is reflected on the EDID 45 and rewritten. As described above, the sound component output from the speaker 49 corresponding to the sound reproduction means (first sound reproduction means) of the TV 40 may be arbitrarily set by a user operation, or may be set by default. Also good.

  Here, when the audio component information is set in the EDID 45, the CPU 44 instructs the AV amplifier 20 to access the EDID 45. In response to this, the AV amplifier 20 accesses the EDID 45 to acquire the audio component information of the TV 40 and selects the audio component to be output to the TV 40.

  As described above, the TV 40 includes the speaker 49 that reproduces one or more audio components, and the EDID 45 that sets audio component information related to the audio components reproduced from the speaker 49. In addition, the AV amplifier 20 includes a speaker 30 that reproduces a plurality of audio components, an HDMI receiver 22 that inputs an audio signal composed of a plurality of audio components, an audio component that reproduces the input audio signals from the speaker 30, and an HDMI. An audio selector 28 that selectively distributes audio components to be reproduced from the speaker 49 via the cable 2 is provided. The audio selector 28 selects an audio component to be reproduced from the speaker 49 according to the audio component information set in the EDID 45.

  As another embodiment, audio component information (for example, front left and right 2ch, rear left and right 2ch, front center 1ch, etc.) may be included in the HDMI signal transmitted from the DVD player 10. In this case, after the AV amplifier 20 rewrites the audio component information, the video / audio signal is output to the TV 40. For example, when the audio component output to the TV 40 is set to the audio component FC of the center component, the AV amplifier 20 rewrites the audio component information in the HDMI signal to the audio component FC. The audio component to be output to the TV 40 may be set in the AV amplifier 20 in advance by user designation or the like.

  In the present embodiment, the TV 40 includes a speaker 49 that reproduces one or more audio components. The AV amplifier 20 also includes a speaker 30 that reproduces a plurality of audio components, an HDMI receiver 22 that inputs an audio signal composed of the plurality of audio components and audio component information included in the audio signal, and a plurality of input audio signals. The audio selector 28 selectively distributes the audio component to be reproduced from the speaker 30 and the audio component to be reproduced from the speaker 49 via the HDMI cable 2, and the CPU 26 reproduces from the speaker 49 selected by the audio selector 28. The audio component information included in the audio signal is rewritten in correspondence with the audio component to be generated. Note that the audio component selected by the audio selector 28 may be determined by a method such as setting in the AV amplifier 20 in advance.

  According to this, the TV 40 can know the audio component of the input audio signal by detecting the audio component information rewritten to the audio component FC in the AV amplifier 20, for example. For example, when the input audio signal is a center component, it is possible to perform an equalizer process to cut a high-frequency component and a low-frequency component, and to perform optimum sound quality correction according to the center component.

  Note that the audio component output from the TV 40 may be set according to the position of the speaker 49. For example, the center speaker (audio component FC) is used for the under speaker type, and the surround components (audio components RL and RR) are used for the side speaker type.

  Further, when the speaker 49 of the TV 40 is used as a center speaker, the surround function possessed on the TV side may be turned off. Thereby, the power consumption of TV40 can be suppressed and energy saving can be achieved.

  FIG. 2 is a diagram illustrating a detailed configuration example of the voice selector 28 illustrated in FIG. 1. The audio selector 28 includes an audio input unit 281 that inputs a 5.1ch multi-surround audio signal from the HDMI receiver 22, and audio components FL, FR, and 5 that constitute the 5.1ch multi-surround audio signal input from the audio input unit 281. Select controller 282 that selects FC, RL, RR, and LFE according to the output destination, audio output unit 283 that outputs the selected audio (for example, audio component FC) selected by select controller 282 to HDMI transmitter 23, and select controller And an audio amplifier output unit 284 that outputs the selected audio (for example, audio components FL, FR, RL, RR, and LFE) selected at 282 to the audio amplifier 29.

  The select controller 282 is connected to the CPU 26, and performs processing of distributing the audio components FL, FR, RL, RR, LFE to the speaker 30 and distributing the audio component FC to the speaker 49 of the TV 40 according to control from the CPU 26.

  FIG. 3 is a diagram for explaining a configuration example of the EDID 45 transmitted from the TV 40 to the AV amplifier 20. The EDID 45 is largely composed of header information, version information, condition information, and other information. Furthermore, the condition information includes device information including a manufacturer name and device name, display conditions including one or more resolution information and aspect ratio information that can be displayed and output, and sound component information that can be sound-output (for example, front 2ch, rear 2ch, center 1ch, etc.) and other information. The audio component information of the EDID 45 can be rewritten based on a user instruction or the like.

  As described above, the AV amplifier 20 accesses the memory in which the EDID 45 of the TV 40 is stored via the DDC line, and acquires the audio component information included in the EDID 45. The CPU 26 controls the audio selector 28 so as to select an audio signal corresponding to the audio component information acquired from the EDID 45. For example, when the audio component information is center 1ch, the audio component FC that is the center component is selected, and this audio component FC is output from the AV amplifier 20 to the TV 40.

  FIG. 4 is a diagram showing an example of a sound component selection screen displayed by the OSD processing unit 47. When the viewer operates the R / C 50 to select and select “audio component selection” from the menu list, the audio component selection screen shown in FIG. 4 is displayed on the display unit 48. This example shows the case of 5.1ch. When the viewer operates the R / C 50 to select a desired audio component (here, center 1ch) and instructs “OK”, the selection is confirmed, and the CPU 44 sets the EDID 45 based on the selection information. Rewrite audio component information. Note that the audio component output from the TV 40 may be set according to the position of the speaker 49. For example, the center speaker (audio component FC) is used for the under speaker type, and the surround components (audio components RL and RR) are used for the side speaker type.

  As described above, when the multi-surround sound is reproduced, since the sound component can be distributed to the speaker attached to the TV, the TV-side speaker can be effectively used. Moreover, it is not necessary to purchase and add a new speaker by utilizing a TV speaker. Even if there are not enough speakers, a multi-surround environment can be easily constructed by using TV speakers.

  FIG. 5 is a flowchart for explaining an example of the audio reproducing method by the AV system of the present invention. Here, in the AV system shown in FIG. 1, an example in which the sound of the center component is output from the TV-side speaker based on the TV-side control will be described.

  First, the TV 40 selects the HDMI input connected to the AV amplifier 20 (step S1), and sets the audio component selection in the EDID 45 to “center” (step S2). Then, control for prompting the AV amplifier 20 to re-read the EDID 45 is performed (step S3).

  Next, the AV amplifier 20 receives a request for rereading the EDID 45 from the TV 40, accesses the TV 40, reads the EDID 45, and analyzes the contents (step S4). As a result of the analysis, if the sound component in the EDID 45 is the “center” component, output control is performed to set the output sound as the “center” component (step S5).

  Next, the TV 40 inputs the sound from the AV amplifier 20 (step S6), and performs processing such as sound quality correction on the input sound based on the sound component information (here, “center” component) in the EDID 45. (Step S7). Finally, the “center” component audio is output from the speaker 49 (step S8).

  FIG. 6 is a flowchart for explaining another example of the audio reproducing method by the AV system of the present invention. Here, in the AV system shown in FIG. 1, an example in which the sound of the center component is output from the TV side speaker based on the control on the AV amplifier side will be described.

  First, the TV 40 selects an HDMI input connected to the AV amplifier 20 (step S11).

  Next, the AV amplifier 20 separates multi-channel audio from an input source such as a DVD (step S12). Then, the audio from the HDMI output is set as the “center” component (step S13), and the audio component information in the HDMI signal is set as the “center” component (step S14).

  Next, the TV 40 inputs the sound from the AV amplifier 20 (step S15), and performs processing such as sound quality correction on the input sound based on the sound component information (here, “center” component) in the HDMI signal. This is performed (step S16). Finally, the sound of the “center” component is output from the speaker 49 (step S17).

  As described above, according to the present invention, an audio device (AV amplifier) and a display device (TV) are connected by digital connection such as HDMI, and an image having multi-surround sound from a DVD player or the like is transmitted via the AV amplifier. Can be reproduced using both an AV amplifier and a television, so that a television speaker can be used effectively.

  In addition, since audio components (for example, center component, surround component, etc.) can be selectively distributed to television side speakers according to the characteristics of multi-surround audio signals, for example, if the television is an underspeaker type, the center component is If it is a speaker type, an optimal audio | voice component can be distributed according to a speaker position, such as a surround component.

It is a block diagram which shows the structural example of the AV system which concerns on one Embodiment of this invention. It is a figure which shows the detailed structural example of the audio | voice selector 28 shown in FIG. It is a figure for demonstrating the structural example of EDID transmitted from TV to AV amplifier. It is a figure which shows an example of the audio | voice component selection screen displayed by an OSD process part. It is a flowchart for demonstrating an example of the audio | voice reproduction method by the AV system of this invention. It is a flowchart for demonstrating the other example of the audio | voice reproduction method by the AV system of this invention.

Explanation of symbols

1, 2 ... HDMI cable, 10 ... DVD player, 11, 23 ... HDMI transmitter, 12, 24, 43 ... HDMI controller, 13, 26, 44 ... CPU, 14, 27, 46 ... CEC controller, 15, 21, 31 , 41 ... HDMI interface, 16 ... DVD, 20 ... AV amplifier, 22, 42 ... HDMI receiver, 25, 45 ... EDID, 28 ... audio selector, 29 ... audio amplifier, 30, 301-305, 49 ... speaker, 40 ... TV, 47 ... OSD processing section, 48 ... display section, 50 ... R / C.

Claims (14)

A display device comprising a connection means for connecting to a sound device capable of reproducing a plurality of audio components,
Audio reproduction means for reproducing one or more audio components, audio component information setting means for setting audio component information relating to an audio component reproduced from the audio reproduction means, and audio component information set in the audio component information setting means Receiving means for receiving a sound component corresponding to the sound device from the acoustic device via the connection means,
The display device characterized in that the sound reproducing means reproduces the sound component received by the receiving means. The display device according to claim 1, further comprising: OSD processing means for OSD-displaying a screen for selecting an audio component to be reproduced from the audio reproducing means,
A display device characterized in that audio component information selected from the screen according to a user operation is set in the audio component information setting means.   3. The display device according to claim 1, wherein when the sound component information is set in the sound component information setting unit, the sound device is instructed to access the sound component information setting unit. A display device comprising means for performing   4. The display device according to claim 1, wherein the connection unit is a unit that performs connection according to an HDMI standard, and the audio component information setting unit is an EDID that includes audio component information. A display device characterized by that. An audio apparatus comprising: a connection unit that connects to a display device that can reproduce one or more audio components; and an audio reproduction unit that reproduces a plurality of audio components.
An audio input means for inputting an audio signal comprising a plurality of audio components; an audio component for reproducing the input audio signals from the audio reproduction means; and an audio component for reproduction from the display device via the connection means. Voice component selection means for selectively distributing,
The audio device is characterized in that the audio component selection means selects an audio component to be reproduced from the display device in accordance with audio component information set in the display device.   6. The audio device according to claim 5, wherein the connection unit is a unit that performs a connection in accordance with an HDMI standard, and the audio component information set in the display device is audio component information included in EDID. A characteristic acoustic device. An audio apparatus comprising: a connection unit that connects to a display device that can reproduce one or more audio components; and an audio reproduction unit that reproduces a plurality of audio components.
Audio input means for inputting an audio signal composed of a plurality of audio components and audio component information included in the audio signal, audio components for reproducing the input audio signals from the audio reproduction means, and the connection means Audio component selection means that selectively distributes audio components to be reproduced from the display device;
A sound apparatus, wherein the sound component information included in the sound signal is rewritten in correspondence with the sound component to be reproduced from the display device selected by the sound component selecting means.   8. The audio apparatus according to claim 7, wherein the connection unit is a unit that performs connection according to an HDMI standard. An AV system in which a display device and an audio device are connected via a connection means,
The display device includes: first audio reproduction means for reproducing one or more audio components; and audio component information setting means for setting audio component information related to an audio component to be reproduced from the first audio reproduction means,
The acoustic apparatus includes: a second sound reproduction unit that reproduces a plurality of sound components; a sound input unit that inputs a sound signal composed of a plurality of sound components; and the second sound reproduction of the input sound signals. Audio component selection means for selectively distributing the audio component to be reproduced from the means and the audio component to be reproduced from the first audio reproduction means via the connection means,
The AV system, wherein the audio component selection unit selects an audio component to be reproduced from the first audio reproduction unit according to the audio component information set in the audio component information setting unit. An AV system in which a display device and an audio device are connected via a connection means,
The display device includes first sound reproduction means for reproducing one or more sound components,
The acoustic apparatus includes: a second sound reproducing unit that reproduces a plurality of sound components; a sound input unit that inputs a sound signal composed of a plurality of sound components and sound component information included in the sound signal; Audio component selection means for selectively distributing the audio signal of the second audio reproduction means from the second audio reproduction means and the audio component to be reproduced from the first audio reproduction means via the connection means,
An AV system, wherein the audio component information included in the audio signal is rewritten in correspondence with the audio component to be reproduced from the first audio reproduction unit selected by the audio component selection unit. The AV system according to claim 9 or 10, wherein the display device includes a receiving unit that receives the audio component selected by the audio component selection unit from the acoustic device via the connection unit.
The AV system characterized in that the first sound reproducing means reproduces the sound component received by the receiving means. A display device including a first sound reproduction unit that reproduces one or more sound components; and an acoustic device including a second sound reproduction unit that reproduces a plurality of sound components. An audio playback method for an AV system in which a device is connected via a connection means,
The display device includes an audio component information setting step for setting audio component information relating to an audio component to be reproduced from the first audio reproducing means;
The sound device inputs a sound signal composed of a plurality of sound components, a sound component for reproducing the input sound signals from the second sound reproducing means, and the connection means via the connection means. An audio component selection step that selectively distributes audio components to be reproduced from one audio reproduction means;
The audio reproduction method, wherein the audio component selection step selects an audio component to be reproduced from the first audio reproduction means according to the audio component information set in the audio component information setting step. A display device including a first sound reproduction unit that reproduces one or more sound components; and an acoustic device including a second sound reproduction unit that reproduces a plurality of sound components. An audio playback method for an AV system in which a device is connected via a connection means,
A sound input step in which the sound device inputs a sound signal composed of a plurality of sound components and sound component information included in the sound signal, and a sound for reproducing the input sound signals from the second sound reproducing means. An audio component selection step for selectively distributing the component and the audio component to be reproduced from the first audio reproduction unit via the connection unit; and the selected audio component to be reproduced from the first audio reproduction unit. And a rewriting step of rewriting the sound component information included in the sound signal. The sound reproducing method according to claim 12 or 13, further comprising: a receiving step in which the display device receives the sound component selected in the sound component selecting step from the acoustic device via the connection unit.
An audio reproducing method, wherein the audio component received in the receiving step is reproduced from the first audio reproducing means.

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