JP2008061251A - Audio video output device, and external speaker control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external speaker control device capable of outputting the sound from either an internal speaker or an external speaker when the power supply of the external speaker control device, which controls an external speaker outside an audio video output device, changes from off-state to on-state. <P>SOLUTION: A microcomputer 202 senses changes of the power supply of an amplifier 2 from off-state to on-state. An HDMI/CEC communication part 201 outputs, when the microcomputer 202 senses the change of the power supply from off-state to on-state, a command which requires outputting of the information representing audio output mode to an audio video output device, and receives the information representing the audio output mode from the audio video output device. The microcomputer 202 controls the output of sound from an external speaker 3 based on the information representing audio output mode. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video / audio output device that outputs video and sound, and an external speaker control device that controls a speaker outside the video / audio output device.

  In recent years, a user has connected an AV amplifier having a plurality of speakers connected to a video / audio output device such as a television, and the sound of broadcast content received by a tuner such as a television or a set top box (STB), or a DVD player / DVD. The sound of video content reproduced by a recorder or the like can be output from a plurality of speakers connected to the AV amplifier, so that a sound with a sense of reality that is generally called a surround sound can be enjoyed.

  When the user wants to output the surround sound, the user operates the remote control button or the main body button of the TV to mute the sound output from the TV speaker (internal speaker), and the remote control button of the AV amplifier or By operating the main body button, the input sound from the device outputting the content displayed on the television is output from the speaker (external speaker) connected to the AV amplifier. At this time, the user must first operate the remote control button or the main unit button of the television, and then operate the remote control button or the main unit button of the AV amplifier. It is not easy to use.

  In order to solve this problem, when outputting sound from a speaker (external speaker) connected to the AV amplifier, in order to simplify the operation on the TV and the operation on the AV amplifier, the power switch of the AV amplifier is turned on / off. An AV amplifier that switches the output destination of sound by an off operation is realized.

  For example, in Patent Document 1, it is possible to configure a surround system in combination with a television receiver, and it is very easy to switch between using the surround system and using only the television receiver. An AV amplifier is disclosed.

FIG. 5 shows a block diagram of an AV amplifier disclosed in Patent Document 1. In FIG.
In FIG. 5, when the surround system is used, the power switch 41 of the AV amplifier 40 is turned on, the changeover switch 50 is switched to the center sound amplification circuit 48 side, and is supplied to the sound input terminal 43 from a playback device such as a VTR or LD. The sound signal is supplied to a speaker connected to the AV amplifier 40 via an output terminal 49 via a Dolby Surround Processor (DSP) 45. When only the TV receiver is used, the power switch 41 of the AV amplifier 40 is turned off, the changeover switch 50 is switched to the TV sound input terminal 51 side, and the TV sound processed by the amplifier circuit of the TV receiver is The signal is supplied to the speaker (internal speaker) of the television receiver via the amplifier 40.
JP-A-5-153520

  As described above, in the method of Patent Document 1, the user outputs sound from the speaker (internal speaker) built in the television by switching the power switch of the AV amplifier between the on state and the off state. And outputting sound from a speaker (external speaker) outside the television can be controlled.

  However, even when the power switch of the AV amplifier is changed from the off state to the on state, there is a television that outputs sound from an internal speaker when the television is turned on after the change. In this case, the sound is output from both the internal speaker and the external speaker. Further, when the user directly operates the TV main body or the AV amplifier main body, a state in which no sound is output from the internal speaker or the external speaker may occur. The user desires that sound is output from only one of the internal speaker and the external speaker.

  The present invention outputs sound only from either the internal speaker or the external speaker when the power source of the external speaker control device that controls the external speaker, which is a speaker outside the audio / video output device, changes from the off state to the on state. An object of the present invention is to provide a video / audio output device and an external speaker control device.

  The present invention also provides a video / audio output device for outputting sound from only one of an internal speaker and an external speaker when the power of the video / audio output device changes from an off state to an on state. Objective.

  In order to solve the above problems and achieve the above object, a video and audio output device of the present invention is a device for outputting video and sound, an internal speaker for outputting sound, a holding means for holding information, An accepting unit that accepts an instruction from the outside of the video and audio output device, and information indicating any one of a plurality of sound output forms based on a form specifying instruction that specifies an output form of the sound that the accepting unit accepts to the holding unit Management means for holding, receiving means for receiving an instruction from an external speaker control device that controls an external speaker that is a speaker external to the video and audio output device, and requesting that the receiving means output information indicating a sound output form Output means for outputting, to the external speaker control device, information indicating a sound output form held in the holding means when receiving an instruction to perform from the external speaker control device; Provided.

  An external speaker control device according to the present invention is a device for controlling an external speaker, which is a speaker external to a video / audio output device, and detecting means for detecting a change from an off state to an on state of the external speaker control device. An output means for outputting an instruction to output information indicating a sound output form to the video and sound output device when the detection means detects that the power source has changed from an off state to an on state; Receiving means from the video and sound output device, and control means for controlling the output of sound from the external speaker based on information indicating the sound output form received by the receiving means.

  As described above, the external speaker control device of the present invention outputs an instruction requesting to output information indicating the sound output mode to the video / audio output device when the power source is changed from the off state to the on state, Information indicating the sound output form is received from the output device, and the output of sound from the external speaker is controlled based on the information. As a result, sound is output only from either the internal speaker or the external speaker.

  In the video / audio output device of the present invention, for example, the management means, based on the form specifying instruction, (a) information indicating a first sound output form for outputting sound from the internal speaker; and (b) sound. Is output from the external speaker to the holding means to hold any one of the information indicating the second sound output form.

  The video / audio output device of the present invention further includes (a) outputting information from the internal speaker when information indicating a first sound output mode for outputting sound from the internal speaker is held in the holding means. (B) When information indicating a second sound output form for outputting sound from the external speaker is held in the holding means, a control means for not outputting sound from the internal speaker may be provided.

  The video / audio output device of the present invention further includes detection means for detecting that the power source of the video / audio output device and the power source of the external speaker control device are simultaneously changed from the off state to the on state, and the output unit includes: When the detecting means detects that the power source of the video / sound output device and the power source of the external speaker control device are simultaneously changed from the off state to the on state, the sound output mode held in the holding unit is The information shown may be output to an external speaker control device that controls a speaker outside the video and audio output device.

  The video / audio output device of the present invention further includes detection means for detecting that the state of the sound output of the video / audio output device has been changed, and the control means is configured to detect the sound of the video / audio output device. When it is detected that the output state has been changed, (a) when information indicating a first sound output mode for outputting sound from the internal speaker is held in the holding means, sound is output from the internal speaker. (B) When information indicating a second sound output form for outputting sound from the external speaker is held in the holding means, it is not necessary to output sound from the internal speaker.

  In the video / audio output device of the present invention, the accepting unit is a mute instruction that is an instruction for making a state in which no sound is output from the internal speaker, or an instruction for releasing a state in which no sound is output from the internal speaker. It is not necessary to accept a mute release instruction.

  In the external speaker control apparatus of the present invention, for example, the control means receives (a) information indicating a first sound output form in which the receiving means outputs sound from a speaker inside the video and sound output apparatus. In this case, no sound is output from the external speaker, and (b) when the receiving means receives information indicating a second sound output form in which sound is output from the external speaker, the sound is output from the external speaker.

  In the external speaker control device of the present invention, the detection means detects that the power source of the audio / video output device and the power source of the external speaker control device are simultaneously changed from an off state to an on state, and the output unit includes: When the detection means detects that the power source of the audio / video output device and the power source of the external speaker control device are simultaneously changed from an off state to an on state, an instruction for requesting output of information indicating a sound output form May not be output to the video / audio output device.

  In the external speaker control device of the present invention, the detection unit detects that the state of sound output of the external speaker control device has been changed, and the output unit detects that the detection unit outputs sound from the external speaker control device. When it is detected that the state has been changed, an instruction requesting output of information indicating the sound output mode may be output to the video / audio output device.

  The external speaker control device of the present invention further includes a reception unit that receives an instruction from outside the external speaker control device, and the reception unit is a mute instruction that is an instruction for not outputting sound from the external speaker, Alternatively, it is not necessary to accept a mute release instruction that is an instruction for releasing a state in which no sound is output from the external speaker.

  The present invention can be realized as a method using characteristic constituent means of the video / audio output device of the present invention as steps, or realized as a program for causing a computer to execute those steps, or an integration including the characteristic constituent means described above. It can also be realized as a circuit. In addition, the present invention can be realized as a method using the characteristic configuration means of the external speaker control device of the present invention as steps, or can be realized as a program for causing a computer to execute those steps, or the characteristic configuration means described above. It can also be realized as an integrated circuit including. The above program can also be distributed via a recording medium such as a CD-ROM or a transmission medium such as a communication network.

  The present invention outputs sound only from either the internal speaker or the external speaker when the power source of the external speaker control device that controls the external speaker, which is a speaker outside the audio / video output device, changes from the off state to the on state. A video / audio output device and an external speaker control device can be provided.

  According to the present invention, since the sound output state of the video / audio output device and the external speaker control device can be switched only by operating the video / audio output device, the sound output state can be switched. Simplification can be made and user convenience can be improved.

  In addition, even when sound is output from both the audio / video output device and the external speaker control device, or when both are muted, the sound output state can be restored to the desired state. The switching operation of the output state can be simplified and user convenience can be improved.

  The present invention also provides a video / audio output device for outputting sound from only one of an internal speaker and an external speaker when the power of the video / audio output device changes from an off state to an on state. it can.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram illustrating a configuration of a system according to an embodiment. The system according to the present embodiment includes a television 1, an amplifier 2, and an external speaker 3. The television 1 is a device that receives broadcast waves and outputs video and sound, and is an example of a video and sound output device of the present invention.
The amplifier 2 is a device that amplifies a signal input from the television 1 and outputs the amplified signal to the external speaker 3, and is an example of the external speaker control device of the present invention. The external speaker 3 is a device that outputs sound based on the sound signal from the amplifier 2.

  The television 1 and the amplifier 2 are connected by a High Definition Multimedia Interface (HDMI) cable, and a video signal and a sound signal output from the amplifier 2 are input to the television 1.

  Further, the television 1 and the amplifier 2 are also connected with an optical cable, and a sound signal output from the television 1 is input to the amplifier 2.

  In addition, the TV 1 and the amplifier 2 connected by the HDMI cable can transmit and receive CEC commands to and from each other via Consumer Electronics Control (CEC).

FIG. 2 is a block diagram showing a configuration of the television 1 in the embodiment.
As shown in FIG. 2, the television 1 includes a memory 101, a remote control receiving unit 102, a microcomputer 103, an HDMI / CEC communication unit 104, a tuner 105, a decoder 106, a display 107, an internal speaker 108, The external output unit 109 is configured. A mode flag 110 is stored in the memory 101.

  The television 1 is operated by a remote control (hereinafter referred to as a “television remote controller”).

  When the remote control receiving unit 102 receives a command from a television remote control (not shown), the microcomputer 103 performs processing according to the received command. For example, the microcomputer 103 performs channel selection switching of the tuner 105 and input / output switching of the decoder 106. The decoder 106 outputs the video signal and the sound signal input from the tuner 105 and the HDMI / CEC communication unit 104 to the display 107 and the internal speaker 108 or the external output unit 109 in accordance with an instruction from the microcomputer 103.

  The memory 101 is an example of holding means of the video / audio output device of the present invention, and the remote control receiving unit 102 is an example of reception means of the video / audio output device of the present invention. The microcomputer 103 is an example of a management unit and a control unit of the video / audio output device of the present invention, and the HDMI / CEC communication unit 104 is an example of a reception unit and an output unit of the video / audio output device of the present invention.

FIG. 3 is a block diagram showing a configuration of the amplifier 2 in the embodiment.
As shown in FIG. 3, the amplifier 2 includes an HDMI / CEC communication unit 201, a microcomputer 202, an HDMI / CEC communication unit 203, a selector 204, an external signal input unit 205, and a speaker output unit 206. ing.

  The microcomputer 202 performs processing according to the CEC command received by the HDMI / CEC communication unit 201 or the HDMI / CEC communication unit 203. For example, the microcomputer 202 performs input / output switching of the selector 204. The selector 204 outputs the video signal and the sound signal input from the HDMI / CEC communication unit 203 or the sound signal input from the external signal input unit 205 according to the instruction of the microcomputer 202 or the output from the HDMI / CEC communication unit 201 or the speaker. The data is output to the unit 206.

  The microcomputer 202 is an example of a detection unit and a control unit of the external speaker control device of the present invention, and the HDMI / CEC communication unit 201 is an example of an output unit and a reception unit of the external speaker control device of the present invention.

  In the system of FIG. 1, the external speaker 3 is connected to the speaker output unit 206 in FIG. 3 via a speaker cable. Also, the HDMI / CEC communication unit 201 in FIG. 3 is connected to the HDMI / CEC communication unit 104 in FIG. 2 via an HDMI cable, and the external signal input unit 205 in FIG. 3 is connected to the external output unit 109 in FIG. Connected with.

FIG. 4 is a diagram showing a menu screen displayed on the television 1 of the embodiment.
As shown in FIG. 4, items that can be selected by the user and that can be operated by the television 1 by selection are displayed on the menu screen. On the menu screen, an item that can be switched between the television mode and the theater mode by the user's selection (an item named “mode switching” in FIG. 4) is displayed.

(Definition of mode)
The television mode and theater mode managed by the microcomputer 103 of the television 1 will be described. In the present embodiment, the state where the sound output from the internal speaker 108 of the television 1 is canceled and the sound output from the external speaker 3 connected to the amplifier 2 is canceled is referred to as “TV mode”. Define. On the other hand, the state in which the sound output from the internal speaker 108 of the television 1 is muted and the muted state of the sound output from the external speaker 3 connected to the amplifier 2 is released is defined as “theater mode”. .

(Switching mode / Switching from TV mode to Theater mode)
A flow of processing when the mode flag 110 stored in the memory 101 of the television 1 is switched from the television mode to the theater mode will be described.

  When the mode flag 110 stored in the memory 101 indicates the television mode, the microcomputer 103 outputs the video signal received by the tuner 105 to the display 107, and transmits the sound signal received by the tuner 105 to the internal speaker 108 and the external speaker. Output to the output unit 109. Therefore, sound is output from the internal speaker 108 of the television 1.

  In addition, the amplifier 2 cancels the sound signal input from the external signal input unit 205 connected to the external output unit 109 of the television 1 and output to the speaker output unit 206. Therefore, no sound is output from the external speaker 3 connected to the amplifier 2.

  In such a state, the user uses a television remote control or the like to display the menu held in the memory 101 on the display 107 of the television 1, and the mode flag 110 recorded in the memory 101 of the television 1. When the menu item for changing the menu item (“mode switching”) is selected, the microcomputer 103 of the television 1 analyzes the selected menu item and changes the mode flag 110 recorded in the memory 101. That is, the microcomputer 103 changes the mode flag 110 recorded in the memory 101 from the television mode to the theater mode.

  Next, the microcomputer 103 instructs the decoder 106 to turn off the sound from the internal speaker 108.

  When the decoder 106 is instructed to turn off the sound from the internal speaker 108 from the microcomputer 103, the decoder 106 turns off the sound from the internal speaker 108.

Therefore, no sound is output from the internal speaker 108 of the television 1.
Further, the microcomputer 103 transmits a CEC command to the amplifier 2 indicating that the mode flag 110 recorded in the memory 101 of the television 1 has been changed from the television mode to the theater mode via the HDMI / CEC communication unit 104. .

  In the amplifier 2, the HDMI / CEC communication unit 201 connected to the HDMI / CEC communication unit 104 of the television 1 receives the CEC command from the television 1.

  The microcomputer 202 analyzes the CEC command received by the HDMI / CEC communication unit 201 and indicates that the mode flag 110 recorded in the memory 101 of the television 1 has been changed from the television mode to the theater mode. Since it is a command, the selector 204 is instructed to output the sound signal input from the external signal input unit 205 to the speaker output unit 206.

  When the selector 204 is instructed to output the sound signal input from the external signal input unit 205 to the speaker output unit 206 from the microcomputer 202, the selector 204 outputs the sound signal to the speaker output unit 206.

  Thus, sound is output from the external speaker 3.

(Switching mode / Switching from theater mode to TV mode)
Next, a flow of processing when the mode flag 110 stored in the memory 101 of the television 1 is switched from the theater mode to the television mode will be described.

  When the mode flag 110 stored in the memory 101 indicates the theater mode, the microcomputer 103 outputs the video signal received by the tuner 105 to the display 107 and outputs a sound based on the sound signal received by the tuner 105 to the internal speaker. The received sound signal is output to the external output unit 109 without being output from 108. Therefore, no sound is output from the internal speaker 108 of the television 1.

  The amplifier 2 outputs a sound signal that is input from the external signal input unit 205 connected to the external output unit 109 of the television 1 and output to the speaker output unit 206. Therefore, sound is output from the external speaker 3 connected to the amplifier 2.

  In such a state, the user uses a television remote control or the like to display the menu held in the memory 101 on the display 107 of the television 1, and the mode flag 110 recorded in the memory 101 of the television 1. When the menu item for changing the menu item (“mode switching”) is selected, the microcomputer 103 of the television 1 analyzes the selected menu item and changes the mode flag 110 recorded in the memory 101. That is, the microcomputer 103 changes the mode flag 110 recorded in the memory 101 from the theater mode to the television mode.

  Next, the microcomputer 103 instructs the decoder 106 to output sound from the internal speaker 108 that is not outputting sound.

  The decoder 106 outputs sound from the internal speaker 108 that does not output sound from the microcomputer 103.

Accordingly, sound is output from the internal speaker 108 of the television 1.
Further, the microcomputer 103 transmits a CEC command to the amplifier 2 indicating that the mode flag 110 recorded in the memory 101 of the television 1 has been changed from the television mode to the theater mode via the HDMI / CEC communication unit 104. .

  In the amplifier 2, the HDMI / CEC communication unit 201 connected to the HDMI / CEC communication unit 104 of the television 1 receives the CEC command from the television 1.

  The microcomputer 202 analyzes the CEC command received by the HDMI / CEC communication unit 201 and indicates that the mode flag 110 recorded in the memory 101 of the television 1 has been changed from the theater mode to the television mode. Since it is a command, the selector 204 is instructed not to output sound based on the sound signal input from the external signal input unit 205 and output from the speaker output unit 206.

  When the selector 204 is instructed not to output the sound signal input from the external signal input unit 205 to the speaker output unit 206 from the microcomputer 202, the selector 204 prevents the sound signal from being output from the speaker output unit 206.

Therefore, no sound is output from the external speaker 3.
Next, the power of the television 1 and / or the amplifier 2 is turned off and then turned on again, or the user performs an incorrect operation using the main body button or the remote control button of the television 1 and / or the amplifier 2. When the sound is output from the internal speaker 108 and the external speaker 3 of the TV 1, or conversely, when the sound is not output from either the internal speaker 108 or the external speaker 3, the user A method of returning to a state in which sound is output only from a desired speaker will be described.

(Embodiment 1)
In the first embodiment, in the system shown in FIG. 1, the user turns off the power using the main body button or the remote control button of the amplifier 2 and then turns on the power again, or the power supplied to the amplifier 2 Is disconnected for some reason and the power is turned off, and then the supply of power is resumed and the power of the amplifier 2 is turned on, or the power of the amplifier 2 is turned off for some other reason, and then again. When the power of the amplifier 2 is turned on, the amplifier 2 changes the output state of the sound output from the external speaker 3 when it is designed to output sound from the external speaker 3 immediately after the power is turned on. The flow of processing will be described.

  First, when the power is turned on, the microcomputer 202 of the amplifier 2 detects that the power has changed from the off state to the on state, and the television 1 connected to the amplifier 2 via the HDMI / CEC communication unit 201. In response to this, a CEC command requesting that the mode flag 110 recorded in the memory 101 of the television 1 be notified of information indicating whether the mode is the television mode or the theater mode is transmitted.

  When the HDMI / CEC communication unit 104 receives from the HDMI / CEC communication unit 201 of the amplifier 2 a CEC command requesting notification of the mode information indicated by the mode flag 110 recorded in the memory 101, the microcomputer 103 of the television 1 Then, the CEC command for transmitting the mode information indicated by the mode flag 110 recorded in the memory 101 is transmitted to the amplifier 2 via the HDMI / CEC communication unit 104.

  The microcomputer 202 of the amplifier 2 analyzes the CEC command received by the HDMI / CEC communication unit 201, and when the mode flag 110 indicates the television mode, the selector 204 receives an input from the external signal input unit 205 and the speaker output unit 206. Instructs not to output the sound signal output from.

  When the selector 204 is instructed not to output the sound signal input from the external signal input unit 205 from the microcomputer 202 to the speaker output unit 206, the selector 204 does not output the sound signal to the speaker output unit 206.

Therefore, no sound is output from the external speaker 3.
When the mode flag 110 indicates the theater mode, the microcomputer 202 of the amplifier 2 instructs the selector 204 to output the sound signal input from the external signal input unit 205 and output from the speaker output unit 206. To do.

  In this case, since the sound is output from the external speaker 3, the sound output state does not change.

  As described above, in the first embodiment, the amplifier 2 checks the sound output mode according to the mode flag 110 recorded by the television 1 immediately after the power is turned on, and outputs the sound if necessary. By changing the state, it is possible to prevent both the internal speaker 108 of the television 1 and the external speaker 3 from being muted or outputting sound from both.

(Embodiment 2)
In the second embodiment, the user turns off the power using the main body button or the remote control button of the television 1 and then turns on the power again, or the power supplied to the television 1 is cut off for some reason. The power is turned off, and then the supply of power is resumed, and the power of the TV 1 is turned on, or the power of the TV 1 is turned off for other reasons, and then the power of the TV 1 is turned on again. In the case where the television 1 is designed to output sound from the internal speaker 108 immediately after the power is turned on, the flow of processing for changing the output state of the sound output from the internal speaker 108 will be described.

  First, when the power is turned on, the microcomputer 103 of the television 1 detects that the power has changed from the off state to the on state, and analyzes the mode flag 110 recorded in the memory 101. The microcomputer 103 is also an example of a detection unit of the video / audio output device of the present invention.

  When the analyzed mode flag 110 indicates the television mode, the microcomputer 103 instructs the decoder 106 to output sound from the internal speaker 108.

  When the decoder 106 is instructed to output sound from the internal speaker 108 from the microcomputer 103, the decoder 106 outputs sound from the internal speaker 108.

Therefore, sound is output from the internal speaker 108 of the television 1.
In this case, since the sound has already been output from the internal speaker 108, the sound output state of the television 1 does not change.

  Further, when the analyzed mode flag 110 indicates the theater mode, the microcomputer 103 instructs the decoder 106 not to output sound from the internal speaker 108.

  When the decoder 106 is instructed not to output sound from the internal speaker 108 from the microcomputer 103, the decoder 106 turns off the sound from the internal speaker 108.

Therefore, no sound is output from the internal speaker 108 of the television 1.
As described above, in the second embodiment, the television 1 confirms the sound output state according to the mode flag 110 stored in the memory 101 immediately after the power is turned on, and changes it if necessary. As a result, both the internal speaker 108 and the external speaker 3 of the television 1 can be prevented from being muted and sound cannot be output from both.

  In Embodiments 1 and 2, the case where the amplifier 2 is turned on and the case where the television 1 is turned on have been described. When the TV 1 and the amplifier 2 are turned on at the same time, the TV 1 first checks the state of the sound output from the internal speaker 108 based on the mode flag 110 recorded in the memory 101, and if necessary Next, the amplifier 2 confirms the state of the sound output from the external speaker 3 based on the mode flag 110 received from the television 1, and changes it as necessary. As a result, when the TV 1 and the amplifier 2 are turned on at the same time and sound is output from both speakers, the sound output state is changed based on the mode flag 110 recorded by the TV 1. It is possible to change and easily return to the state before the power of the television 1 and the amplifier 2 is cut off.

  In the first and second embodiments, when the TV 1 and the amplifier 2 are turned on, the TV 1 and the amplifier 2 check their sound output states according to the mode recorded in the memory of the TV 1 and are necessary. Change according to. However, the TV 1 and the amplifier 2 are recorded in the memory 101 of the TV 1 when the sound output state of the TV 1 and the amplifier 2 is changed due to some cause or user operation, or at an appropriate timing. Depending on the mode, the state of its own sound output may be confirmed and changed as necessary.

  Thereby, the user does not assume a state in which no sound is output from the internal speaker 108 and the external speaker 3 of the television 1, but the operation of changing the sound output form without changing the mode, i.e., mute or When the mute release operation is performed using the main body button or remote control button of the television 1 and / or the amplifier 2, particularly when the mute operation is performed on the device that outputs the sound, the internal speaker of the television 1 is used. Even when both the external speaker 108 and the external speaker 3 are muted and no sound is output from both the internal speaker 108 and the external speaker 3 of the television 1, The user can easily return to the TV mode or the theater mode by checking the output form and changing it as necessary.

  In addition, as described above, when the user does not assume a state in which no sound is output from both the internal speaker 108 and the external speaker 3 of the television 1, the main body button or the remote control button of the television 1 and / or the amplifier 2 is pressed. It is also possible to operate so that no sound is output from both the internal speaker 108 and the external speaker 3 of the television 1. Further, when the user does not assume a state in which no sound is output from both the internal speaker 108 and the external speaker 3 of the television 1, an operation to change the sound output state, that is, an operation to mute or cancel the mute The TV 1 and the amplifier 2 may be provided with a function that can be set to stop use.

  The function that can be set to disable the operation of muting or canceling the muting is performed when the system shown in FIG. When the TV 1 and the amplifier 2 are turned on after being connected with the cable, the TV 1 sets its own mute and mute release operations to be disabled, and the amplifier 2 connected with the HDMI cable. On the other hand, the mute and mute release operations held by the amplifier 2 may be set to stop use, or can be set by the user selecting a selection item such as a setting menu held by the television 1. It may be.

  In the system according to the present embodiment, sound is output from both the internal speaker 108 and the external speaker 3 of the television 1, and both the internal speaker 108 and the external speaker 3 of the television 1 are muted. In the state, the user displays and operates the menu screen held by the television 1 and selects “mode switching” to reset the television mode or the theater mode. Obviously, it is possible to avoid a state in which sound is output from both of the speakers 3 and a state in which both the internal speaker 108 and the external speaker 3 of the television 1 are muted, and to return to a desired sound output state.

  The video / audio output device of the present invention is useful as a television or the like, and the external speaker control device of the present invention is useful as an amplifier or the like.

It is a figure which shows the structure of the system in embodiment. It is a block diagram which shows the structure of the television 1 in embodiment. It is a block diagram which shows the structure of the amplifier 2 in embodiment. It is a figure which shows the menu screen displayed on the television 1 of embodiment. FIG. 3 is a block diagram of an AV amplifier as a prior example of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Television 2 Amplifier 3 External speaker 101 Memory 102 Remote control receiving part 103 Microcomputer 104 HDMI / CEC communication part 105 Tuner 106 Decoder 107 Display 108 Internal speaker 109 External output part 110 Mode flag 201 HDMI / CEC communication part 202 Microcomputer 203 HDMI / CEC communication Unit 204 selector 205 external signal input unit 206 speaker output unit

Claims (17)

A video and audio output device for outputting video and sound,
An internal speaker that outputs sound;
Holding means for holding information;
Receiving means for receiving an instruction from the outside of the video and audio output device;
Management means for holding information indicating any one of a plurality of sound output forms in the holding means based on a form specifying instruction for specifying an output form of sound received by the receiving means;
Receiving means for receiving an instruction from an external speaker control device that controls an external speaker that is a speaker external to the video and audio output device;
When receiving an instruction from the external speaker control device to request that the receiving means output information indicating the sound output form, the information indicating the sound output form held in the holding means is sent to the external speaker control apparatus. An audio / video output device comprising: output means for outputting. Based on the form specifying instruction, the management means includes (a) information indicating a first sound output form for outputting sound from the internal speaker, and (b) a second sound for outputting sound from the external speaker. The video and audio output device according to claim 1, wherein any one of information indicating an output form is held by the holding unit. Further, (a) when information indicating a first sound output mode for outputting sound from the internal speaker is held in the holding means, sound is output from the internal speaker, and (b) sound is output from the external speaker. The video / audio output device according to claim 1, further comprising a control unit that does not output sound from the internal speaker when the information indicating the second sound output mode to be output from is held by the holding unit. Furthermore, a detecting means for detecting that the power source of the audio / video output device and the power source of the external speaker control device are simultaneously changed from an off state to an on state,
The output means is held by the holding means when the detecting means detects that the power source of the video / audio output device and the power source of the external speaker control device are simultaneously changed from an off state to an on state. The video / audio output device according to claim 1, wherein information indicating a sound output mode is output to an external speaker control device that controls a speaker outside the video / audio output device. Furthermore, a detection means for detecting that the state of the sound output of the video / audio output device has been changed,
When the detection means detects that the sound output state of the video and audio output device has been changed, the control means includes (a) information indicating a first sound output form for outputting sound from the internal speaker. When the holding means holds information indicating a second sound output mode for outputting sound from the internal speaker and (b) outputting sound from the external speaker when held by the holding means, The video / audio output device according to claim 3, wherein no sound is output from the internal speaker. The accepting unit does not accept a mute instruction that is an instruction for making a state in which no sound is output from the internal speaker, or a mute release instruction that is an instruction for releasing a state in which no sound is output from the internal speaker. The video / audio output device according to 1. An external speaker control device that controls an external speaker, which is a speaker outside the audio / video output device,
Detecting means for detecting a change from an off state to an on state of the power supply of the external speaker control device;
An output means for outputting an instruction requesting to output information indicating a sound output form to the video and sound output device when the detection means detects that the power source has changed from an off state to an on state;
Receiving means for receiving information from the video and audio output device;
An external speaker control device comprising: control means for controlling sound output from the external speaker based on information indicating a sound output form received by the receiving means. The control means (a) does not output sound from the external speaker when the receiving means receives information indicating a first sound output form in which sound is output from a speaker inside the video / audio output device; The external speaker control device according to claim 7, wherein b) outputs information from the external speaker when receiving information indicating a second sound output form in which the receiving unit outputs sound from the external speaker. The detection means detects that the power source of the audio / video output device and the power source of the external speaker control device are simultaneously changed from an off state to an on state,
The output means outputs information indicating a sound output form when the detecting means detects that the power source of the video / audio output device and the power source of the external speaker control device are simultaneously changed from the off state to the on state. The external speaker control device according to claim 7, wherein an instruction to request this is not output to the video and audio output device. The detection means detects that the state of the sound output of the external speaker control device has been changed,
When the detection unit detects that the sound output state of the external speaker control device has been changed, the output unit instructs the video / audio output device to output information indicating a sound output mode. The external speaker control device according to claim 7 which outputs. And a receiving means for receiving an instruction from outside the external speaker control device,
The accepting unit does not accept a mute instruction that is an instruction for making a state in which no sound is output from the external speaker, or a mute release instruction that is an instruction for releasing a state in which no sound is output from the external speaker. 8. The external speaker control device according to 7. A management step of holding information indicating any one of a plurality of sound output forms in a holding unit based on an instruction specifying the sound output form;
A receiving step of receiving an instruction from an external speaker control device that controls a speaker outside the video and audio output device;
When receiving from the external speaker control device an instruction to output information indicating the sound output form in the receiving step, the information indicating the sound output form held in the holding means is sent to the external speaker control device. A sound output form notification method comprising: an output step for outputting. A detection step of detecting a change from an off state to an on state of an external speaker control device that controls a speaker outside the video and audio output device;
An output step of outputting an instruction requesting to output information indicating a sound output form to the video and audio output device when detecting that the power source has changed from an off state to an on state in the detection step;
A receiving step of receiving information from the video and audio output device;
And a control step of controlling sound output from the external speaker based on information indicating a sound output form received in the reception step. Management means for holding information indicating any one of a plurality of sound output forms in a holding means based on an instruction specifying the sound output form;
Receiving means for receiving an instruction from an external speaker control device for controlling a speaker outside the video and audio output device;
When receiving an instruction from the external speaker control device to request that the receiving means output information indicating the sound output form, the information indicating the sound output form held in the holding means is sent to the external speaker control apparatus. An integrated circuit comprising: output means for outputting. Detecting means for detecting a change from an off state to an on state of an external speaker control device that controls a speaker outside the video and audio output device;
An output means for outputting an instruction requesting to output information indicating a sound output form to the video and sound output device when the detection means detects that the power source has changed from an off state to an on state;
Receiving means for receiving information from the video and audio output device;
An integrated circuit comprising: control means for controlling output of sound from the external speaker based on information indicating a sound output form received by the receiving means. A management step of holding information indicating any one of a plurality of sound output forms in a holding unit based on an instruction specifying the sound output form;
A receiving step of receiving an instruction from an external speaker control device that controls a speaker outside the video and audio output device;
When receiving from the external speaker control device an instruction to output information indicating the sound output form in the receiving step, the information indicating the sound output form held in the holding means is sent to the external speaker control device. A program for causing a computer to execute an output step to be output. A detection step of detecting a change from an off state to an on state of an external speaker control device that controls a speaker outside the video and audio output device;
An output step of outputting an instruction requesting to output information indicating a sound output form to the video and audio output device when detecting that the power source has changed from an off state to an on state in the detection step;
A receiving step of receiving information from the video and audio output device;
A program for causing a computer to execute a control step of controlling sound output from the external speaker based on information indicating a sound output form received in the reception step.

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