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JP2008061251

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2008061251
An external speaker control device for controlling an external speaker, which is a speaker
external to a video / sound output device, outputs sound only from one of an internal speaker
and an external speaker when the power of the external speaker control device changes from an
off state to an on state. An external speaker control device is provided. SOLUTION: A
microcomputer 202 which detects a change from the off state of the power supply of the
amplifier 2 to an on state, and information showing a sound output form when the
microcomputer 202 detects that the power supply is changed from the off state to the on state.
The microcomputer 202 is provided with an HDMI / CEC communication unit 201 that outputs
an instruction to request output to the video and audio output device and receives information
indicating the audio output form from the video and audio output device, and the microcomputer
202 The output of the sound from the external speaker 3 is controlled based on the information
shown. [Selected figure] Figure 3
Video sound output device and external speaker control device
[0001]
The present invention relates to a video and audio output apparatus for outputting video and
sound, and an external speaker control apparatus for controlling a speaker outside the video and
audio output apparatus.
[0002]
In recent years, a user connects an AV amplifier having a plurality of speakers connected to a
video / sound output device such as a television, and the sound of broadcast content received by
a tuner such as a television or set top box (STB), a DVD player / DVD The sound of the video
09-05-2019
1
content reproduced by the recorder or the like can be output from a plurality of speakers
connected to the AV amplifier to enjoy a realistic sound generally called surround sound.
[0003]
When the user wants to output surround sound, the user operates the remote control button or
the main body button of the television to mute the sound output from the speaker (internal
speaker) of the television, 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 by 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 body button of the
television, and then operate the remote control button or the main body button of the AV
amplifier. It has to be easy to use.
[0004]
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 television and the
operation on the AV amplifier, turn on / off the power switch of the AV amplifier. An AV
amplifier is realized which switches the output destination of sound by the off operation.
[0005]
For example, in Patent Document 1, a surround system can be configured in combination with a
television receiver, and switching operation between using the surround system and using only
the television receiver is extremely easy. An AV amplifier is disclosed.
[0006]
FIG. 5 shows a block diagram of an AV amplifier disclosed by Patent Document 1. As shown 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
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2
side, and supplied to the sound input terminal 43 from the playback device such as VTR or LD.
The sound signal being supplied is supplied via Dolby Surround Processor (DSP) 45 to a speaker
connected to the AV amplifier 40 via an output terminal 49.
When only the television receiver is used, the power switch 41 of the AV amplifier 40 is turned
off, the changeover switch 50 is switched to the television sound input terminal 51 side, and the
television sound processed by the amplifier circuit of the television receiver is AV It is supplied to
the speaker (internal speaker) of the television receiver via the amplifier 40.
JP-A-5-153520
[0007]
As described above, in the method of Patent Document 1, the user causes the speaker (internal
speaker) built in the television to output sound by switching the power switch of the AV amplifier
between the on state and the off state. And sound output from a speaker outside the television
(external speaker) can be controlled.
[0008]
However, even when the power switch of the AV amplifier changes from the off state to the on
state, there is also a television which outputs sound from the internal speaker when the television
is turned on after the change.
In this case, the sound is output from both the internal and external speakers. In addition, when
the user directly operates the television main body or the AV amplifier main body, a state in
which sound is not output from the internal speaker or the external speaker may also occur. The
user desires that the sound be output only from one of the internal speaker and the external
speaker.
[0009]
The present invention outputs the sound only from either the internal speaker or the external
speaker when the power of the external speaker control device for controlling the external
speaker that is the speaker outside the video and audio output device changes from the off state
to the on state. It is an object of the present invention to provide an audio / video output device
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to be used and an external speaker control device.
[0010]
The present invention also provides a video and audio output device for outputting sound only
from either the internal speaker or the external speaker when the power of the video and audio
output device changes from the off state to the on state. To aim.
[0011]
In order to solve the above problems and achieve the above object, a video and audio output
apparatus according to the present invention is an apparatus for outputting video and sound, and
includes an internal speaker for outputting a sound, a holding unit for holding information,
Information indicating any one of a plurality of sound output forms is provided to the holding
means based on an accepting means for accepting an instruction from outside the video / sound
output device and a form specifying instruction for specifying an output form of sound received
by the accepting means. Management means to be held, receiving means for receiving
instructions from an external speaker control device for controlling an external speaker that is a
speaker outside the video and audio output device, and request that the receiving means output
information indicating a sound output form Outputting means for outputting information
indicating the sound output form held in the holding means to the external speaker control
device, when an instruction to perform is received from the external speaker control device;
Provided.
[0012]
The external speaker control device according to the present invention is a device for controlling
an external speaker that is a speaker outside the video and audio output device, and a detection
unit that detects a change from the off state to the on state of the power of the external speaker
control device And output means for outputting an instruction to output information indicating a
sound output form to the video / sound output device when the detection means detects that the
power supply has been switched from the off state to the on state. And the control means for
controlling the output of the sound from the external speaker based on the information
indicating the sound output form received by the reception means.
[0013]
As described above, the external speaker control device of the present invention outputs an
instruction to output the information indicating the sound output form to the video / sound
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output device when the power changes from the off state to the on state. Information indicating a
sound output form is received from the output device, and the output of the sound from the
external speaker is controlled based on the information.
Thus, the sound is output only from one of the internal speaker and the external speaker.
[0014]
In the video / sound output device according to the present invention, for example, the
management means (a) information indicating a first sound output form for causing a sound to
be output from the internal speaker based on the form specification instruction, (b) sound Is held
by the holding means with any one of the information indicating the second sound output form
to be outputted from the external speaker.
[0015]
The video and audio output apparatus according to the present invention further includes: (a)
outputting sound from the internal speaker when the information indicating the first sound
output form for outputting the sound from the internal speaker is held by the holding unit. (B)
Control means may be provided for preventing the sound from being output from the internal
speaker when the information indicating the second sound output form for causing the sound to
be output from the external speaker is held by the holding means.
[0016]
The video and audio output apparatus according to the present invention further includes
detection means for detecting that the power of the video and audio output apparatus and the
power of the external speaker control apparatus simultaneously change from the off state to the
on state, and the output means The sound output form held by the holding unit is detected when
the detection unit simultaneously detects that the power supply of the video and audio output
device and the power supply of the external speaker control device simultaneously change from
the off state to the on state; The information indicated may be output to an external speaker
control device that controls a speaker outside the video / sound output device.
[0017]
The video and audio output apparatus according to the present invention further includes
detection means for detecting that the state of the audio output of the video and audio output
apparatus has been changed, and the control means is the audio of the video and audio output
apparatus. When it is detected that the state of the output has been changed, (a) the information
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indicating the first sound output form for causing the sound to be output from the internal
speaker is held by the holding means, the sound is output from the internal speaker The sound
may not be output from the internal speaker when the information indicating the second sound
output form in which the sound is output and the sound is output from the external speaker is
held in the holding unit.
[0018]
In the video / sound output device according to the present invention, the reception means is a
mute instruction which is an instruction to make a state in which no sound is output from the
internal speaker, or an instruction to cancel a state in which a sound is not output from the
internal speaker. It is not necessary to receive a certain mute cancellation instruction.
[0019]
Further, in the external speaker control device of the present invention, for example, the control
means receives (a) information indicating a first sound output form which causes the receiving
means to output a sound from a speaker in the video and sound output device. In this case, when
the information indicating the second sound output form in which the receiving unit causes the
external speaker to output the sound is received without outputting the sound from the external
speaker, the external speaker causes the sound to be output.
[0020]
In the external speaker control device of the present invention, the detection means detects that
the power supply of the video and audio output device and the power supply of the external
speaker control device simultaneously change from the off state to the on state, and the output
means When the detection means detects that the power of the video and audio output device
and the power of the external speaker control device simultaneously change from the off state to
the on state, an instruction to request the output of information indicating the sound output form
Need not be output to the video / sound output device.
[0021]
In the external speaker control device of the present invention, the detection means detects that
the state of the sound output of the external speaker control device is changed, and the output
means is a sound output of the external speaker control device. When it is detected that the state
of (4) has been changed, an instruction to output information indicating the sound output form
may be output to the video / sound output device.
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[0022]
The external speaker control device according to the present invention further includes reception
means for receiving an instruction from the outside of the external speaker control device,
wherein the reception means is a mute instruction which is an instruction for setting the state
where no sound is output from the external speaker. Alternatively, it is not necessary to receive a
mute release instruction which is an instruction for releasing the state in which no sound is
output from the external speaker.
[0023]
The present invention can be realized as a method having the characteristic constituent means of
the video and audio output device of the present invention as steps, or as a program that causes
a computer to execute those steps, or an integration including the characteristic constituent
means described above. It can also be realized as a circuit.
Furthermore, the present invention can be realized as a method having the characteristic
constituent means of the external speaker control device of the present invention as steps, or as a
program that causes a computer to execute those steps, or the above characteristic constituent
means 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.
[0024]
The present invention outputs the sound only from either the internal speaker or the external
speaker when the power of the external speaker control device for controlling the external
speaker that is the speaker outside the video and audio output device changes from the off state
to the on state. It is possible to provide an audio / video output device to be used and an external
speaker control device.
[0025]
According to the present invention, switching of the sound output state of the video and sound
output device and the external speaker control device can be performed only by operating the
video and sound output device. It is possible to simplify and improve the usability of the user.
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[0026]
In addition, even when both the video and audio output device and the external speaker control
device are outputting sound or both are muted, the output state of the sound can be restored to a
desired state, so It is possible to simplify the switching operation of the output state and to
improve the usability of the user.
[0027]
The present invention can also provide a video and audio output device for outputting sound
only from one of the internal speaker and the external speaker when the power of the video and
audio output device changes from the off state to the on state. it can.
[0028]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings.
FIG. 1 is a diagram showing the configuration of a system according to the embodiment.
The system of the present embodiment is configured of 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 the video / 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 a sound based on the sound signal from the
amplifier 2.
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[0029]
The television 1 and the amplifier 2 are connected by a High Definition Multimedia Interface
(HDMI) cable, and the video signal and the sound signal output from the amplifier 2 are input to
the television 1.
[0030]
Furthermore, the television 1 and the amplifier 2 are also connected by an optical cable, and a
sound signal output from the television 1 is input to the amplifier 2.
[0031]
Further, the television 1 and the amplifier 2 connected by the HDMI cable can mutually transmit
and receive a CEC command via Consumer Electronics Control (CEC).
[0032]
FIG. 2 is a block diagram showing the configuration of the television 1 in the embodiment.
As shown in FIG. 2, the television 1 includes a memory 101, a remote control reception unit 102,
a microcomputer 103, an HDMI / CEC communication unit 104, a tuner 105, a decoder 106, a
display 107, and an internal speaker 108. And an external output unit 109.
A mode flag 110 is stored in the memory 101.
[0033]
The television 1 is operated by a remote control (hereinafter, referred to as "remote control for
television").
[0034]
When the remote control reception unit 102 receives a command from a television remote
control (not shown), the microcomputer 103 performs processing in accordance with the
received command.
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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 or the
HDMI / CEC communication unit 104 to the display 107 and the internal speaker 108 or the
external output unit 109 according to an instruction of the microcomputer 103.
[0035]
The memory 101 is an example of a holding unit of the video and audio output apparatus of the
present invention, and the remote control receiving unit 102 is an example of a reception unit of
the video and audio output apparatus of the present invention.
The microcomputer 103 is an example of management means and control means of the video
and audio output apparatus of the present invention, and the HDMI / CEC communication unit
104 is an example of reception and output means of the video and audio output apparatus of the
present invention.
[0036]
FIG. 3 is a block diagram showing the 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.
[0037]
The microcomputer 202 performs processing in accordance with the CEC command received by
the HDMI / CEC communication unit 201 or the HDMI / CEC communication unit 203.
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For example, the microcomputer 202 performs input / output switching of the selector 204.
The selector 204 outputs the HDMI / CEC communication unit 201 or the speaker output
according to the instruction of the microcomputer 202, the video signal and the sound signal
input from the HDMI / CEC communication unit 203, and the sound signal input from the
external signal input unit 205. Output to the unit 206.
[0038]
The microcomputer 202 is an example of detection means and control means of the external
speaker control device of the present invention, and the HDMI / CEC communication unit 201 is
an example of output means and reception means of the external speaker control device of the
present invention.
[0039]
In the system of FIG. 1, the external speaker 3 is connected to the speaker output unit 206 in FIG.
3 by a speaker cable.
Further, the HDMI / CEC communication unit 201 in FIG. 3 is connected to the HDMI / CEC
communication unit 104 in FIG. 2 by an HDMI cable, and the external signal input unit 205 in
FIG. 3 is an external output unit 109 in FIG. Connected by
[0040]
FIG. 4 is a diagram showing a menu screen displayed on the television 1 according to the
embodiment.
As shown in FIG. 4, on the menu screen, items which can be selected by the user and which allow
the user to operate the television 1 are displayed.
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On the menu screen, an item (in FIG. 4, an item named “mode switching”) which can switch
between the television mode and the theater mode is displayed.
[0041]
(Definition of Mode) A television mode and a theater mode managed by the microcomputer 103
of the television 1 will be described.
In the present embodiment, the state where the mute state of 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 extinguished is referred to as "television mode". Define.
On the other hand, the state in which the sound output from the internal speaker 108 of the
television 1 is extinguished and the mute state of the sound output from the external speaker 3
connected to the amplifier 2 is canceled is defined as "theatre mode". .
[0042]
(Switching of Mode / Switching from Television 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.
[0043]
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
the sound signal received by the tuner 105 is the internal speaker 108 and the external Output
to the output unit 109.
Therefore, sound is output from the internal speaker 108 of the television 1.
[0044]
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Also, the amplifier 2 extinguishes the 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, no sound is output from the external speaker 3 connected to the amplifier 2.
[0045]
In such a state, the user causes the display 107 of the television 1 to display the menu held by
the memory 101 by using the television remote controller or the like, and the mode flag 110
recorded in the memory 101 of the television 1 is displayed. When the menu item (“mode
switching”) for changing the mode 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.
[0046]
Next, the microcomputer 103 instructs the decoder 106 to turn off the sound from the internal
speaker 108.
[0047]
When instructed by the microcomputer 103 to turn off the sound from the internal speaker 108,
the decoder 106 turns off the sound from the internal speaker 108.
[0048]
Therefore, no sound is output from the internal speaker 108 of the television 1.
Further, the microcomputer 103 transmits a CEC command 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 to the amplifier 2 through the HDMI / CEC communication unit 104. .
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[0049]
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.
[0050]
The microcomputer 202 analyzes the CEC command received by the HDMI / CEC communication
unit 201, and indicates that the mode flag 110 whose CEC command is recorded in the memory
101 of the television 1 has been changed from the television mode to the theater mode. Since the
command is a command, it instructs the selector 204 to output the sound signal input from the
external signal input unit 205 to the speaker output unit 206.
[0051]
When instructed by the microcomputer 202 to output a sound signal input from the external
signal input unit 205 to the speaker output unit 206, the selector 204 outputs the sound signal
to the speaker output unit 206.
[0052]
Thus, the sound is output from the external speaker 3.
[0053]
(Switching of Mode / Switching from Theater Mode to Television Mode) Next, the 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.
[0054]
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
the sound based on the sound signal received by the tuner 105 is an internal speaker. The
received sound signal is output to the external output unit 109 without output from the signal
108.
Therefore, no sound is output from the internal speaker 108 of the television 1.
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[0055]
Also, 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 is output to the speaker output
unit 206.
Therefore, the sound is output from the external speaker 3 connected to the amplifier 2.
[0056]
In such a state, the user causes the display 107 of the television 1 to display the menu held by
the memory 101 by using the television remote controller or the like, and the mode flag 110
recorded in the memory 101 of the television 1 is displayed. When the menu item (“mode
switching”) for changing the mode 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.
[0057]
Next, the microcomputer 103 instructs the decoder 106 to output the sound from the internal
speaker 108 which is not outputting the sound.
[0058]
The decoder 106 outputs the sound from the internal speaker 108 which is not outputting the
sound from the microcomputer 103.
[0059]
Therefore, sound is output from the internal speaker 108 of the television 1.
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Further, the microcomputer 103 transmits a CEC command 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 to the amplifier 2 through the HDMI / CEC communication unit 104. .
[0060]
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.
[0061]
The microcomputer 202 analyzes the CEC command received by the HDMI / CEC communication
unit 201, and indicates that the mode flag 110 in which the CEC command is recorded in the
memory 101 of the television 1 has been changed from the theater mode to the television mode.
Since the command is a command, it instructs the selector 204 not to output a sound based on
the sound signal input from the external signal input unit 205 and output from the speaker
output unit 206.
[0062]
When instructed by the microcomputer 202 to not output the sound signal input from the
external signal input unit 205 to the speaker output unit 206, the selector 204 prevents the
sound signal from being output from the speaker output unit 206.
[0063]
Thus, no sound is output from the external speaker 3.
Next, the power of the television 1 and / or the amplifier 2 is turned off once and then turned on
again, or the user erroneously operates the television 1 and / or the amplifier 2 using the main
body button or the remote control button or the like. When the sound is output from the internal
speaker 108 and the external speaker 3 of the television 1 or when the sound is not output from
either the internal speaker 108 or the external speaker 3 A method of returning to a state where
sound is output only from a desired speaker will be described.
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[0064]
First Embodiment 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 amplifier 2 and then turns on
the power again, or amplifier 2 The power supplied to the power supply is cut off for some
reason, and then the power supply is restarted, the power supply to the amplifier 2 is turned on
again, or the power supply to the amplifier 2 is generated due to other reasons. When the power
of the amplifier 2 is turned off again and then turned on again, the amplifier 2 is outputted from
the external speaker 3 when the specification is made to output the sound from the external
speaker 3 immediately after the power is turned on. The flow of processing for changing the
sound output state will be described.
[0065]
First, when the power is turned on, the microcomputer 202 of the amplifier 2 detects that the
power is 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 On the other hand, the mode flag 110
recorded in the memory 101 of the television 1 transmits a CEC command requesting
notification of information indicating whether the mode is the television mode or the theater
mode.
[0066]
When the HDMI / CEC communication unit 104 receives, from the HDMI / CEC communication
unit 201 of the amplifier 2, a CEC command for requesting notification of the mode information
indicated by the mode flag 110 recorded in the memory 101, the microcomputer 103 of the
television 1 A CEC command for transmitting 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.
[0067]
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 is inputted from the external signal input unit 205, and the speaker output unit 206
It instructs not to output the sound signal output from.
[0068]
When instructed by the microcomputer 202 to not output the sound signal input from the
external signal input unit 205 to the speaker output unit 206, the selector 204 does not output
the sound signal to the speaker output unit 206.
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[0069]
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. Do.
[0070]
In this case, since the sound is output from the external speaker 3, the sound output state does
not change.
[0071]
As described above, in the first embodiment, the amplifier 2 confirms the output form of sound
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
from outputting sound from both.
[0072]
Second Embodiment 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 The power is turned off for some reason and then
turned off, and then the power of the television 1 is turned on again, or the television 1 is turned
off for other reasons, and then the television is turned on again. A process of changing the output
state of the sound being output from the internal speaker 108 when the power of 1 is turned on
and the television 1 is configured to output the sound from the internal speaker 108 immediately
after the power is turned on Explain the flow of
[0073]
First, when the power is turned on, the microcomputer 103 of the television 1 detects that the
09-05-2019
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power is 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 / sound output device
of the present invention.
[0074]
When the analyzed mode flag 110 indicates the television mode, the microcomputer 103
instructs the decoder 106 to output a sound from the internal speaker 108.
[0075]
When instructed by the microcomputer 103 to output a sound from the internal speaker 108,
the decoder 106 causes the internal speaker 108 to output a sound.
[0076]
Therefore, sound is output from the internal speaker 108 of the television 1.
In this case, since the sound is already output from the internal speaker 108, the sound output
state of the television 1 does not change.
[0077]
Further, when the analyzed mode flag 110 indicates a theater mode, the microcomputer 103
instructs the decoder 106 not to output a sound from the internal speaker 108.
[0078]
When instructed by the microcomputer 103 not to output a sound from the internal speaker
108, the decoder 106 eliminates the sound from the internal speaker 108.
[0079]
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Therefore, no sound is output from the internal speaker 108 of the television 1.
As described above, in the second embodiment, the television 1 checks 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. Thus, it is possible to prevent both the internal speaker 108 and
the external speaker 3 of the television 1 from being muted or from outputting sound from both.
[0080]
In the first and second embodiments, the case where the power of the amplifier 2 is turned on
and the case where the power of the television 1 is turned on have been described.
When the television 1 and the amplifier 2 are powered on at the same time, first, the television 1
confirms the state of the sound output from the internal speaker 108 based on the mode flag
110 recorded in the memory 101, and as necessary Then, based on the mode flag 110 received
from the television 1, the amplifier 2 confirms the state of the sound output from the external
speaker 3, and changes it as necessary.
As a result, when the power of the television 1 and the amplifier 2 is simultaneously turned on
and the sound is output from both speakers, the output state of the sound is determined based
on the mode flag 110 recorded by the television 1. It is possible to change and easily return to
the state before the power supply of the television 1 and the amplifier 2 is cut off.
[0081]
Further, in the first and second embodiments, when the television 1 and the amplifier 2 are
powered on, the television 1 and the amplifier 2 confirm the state of the sound output of the
television 1 according to the mode recorded in the memory of the television 1. Change according
to.
However, the television 1 and the amplifier 2 are recorded in the memory 101 of the television 1
when the state of the sound output of the television 1 and the amplifier 2 is changed due to some
cause or the user's operation regardless of the power on. Depending on the mode, it may check
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the state of its own sound output and change it as necessary.
[0082]
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 changes the sound output mode without
changing the mode, that is, mute or not When the mute cancellation operation is performed
using the main unit button or remote control button of the television 1 and / or the amplifier 2,
in particular, when the mute operation of the device from which the sound is output is
performed, the internal speaker of the television 1 Even when both the external speaker 3 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, depending on the mode stored in the memory 101 of
the television 1, It is possible for the user to easily return to the television mode or the theater
mode by confirming the output form and changing it as necessary.
[0083]
Further, as described above, when it is assumed that the user does not output sound 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 used. It may be operated
so as not to be in a state in which no sound is output from both the internal speaker 108 and the
external speaker 3 of the television 1.
Furthermore, when the user does not assume that no sound is output from both the internal
speaker 108 and the external speaker 3 of the television 1, an operation to change the output
state of the sound, that is, an operation to mute or cancel the mute The television 1 and the
amplifier 2 may have a function that can be set to stop using.
[0084]
The function that can set the mute and unmute operation to use stop is when constructing the
system shown in FIG. 1, that is, when the television 1 and the amplifier 2 are connected by an
HDMI cable, or the television 1 and the amplifier 2 are HDMI After connecting with the cable,
when the power of the television 1 and the amplifier 2 is turned on, etc., the television 1 sets its
own muting and demuffling operations to use stop, and further, the amplifier 2 connected with
the HDMI cable On the other hand, the operation of muting or canceling the muting held by the
amplifier 2 may be set to stop using, or the user can set by selecting a selection item such as a
setting menu held by the television 1 You may
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[0085]
In the system according to the present embodiment, the sound is output from both the internal
speaker 108 and the external speaker 3 of the television 1, or both the internal speaker 108 and
the external speaker 3 of the television 1 are muted. In this state, the user displays and operates
the menu screen held by the television 1, and resets the television mode or the theater mode by
selecting "mode switching", whereby the internal speaker 108 and the exterior of the television 1
are displayed. It is self-evident that it is possible to avoid the situation in which sound is output
from both of the speakers 3 and the situation in which both the internal speaker 108 and the
external speaker 3 of the television 1 are muted, and return to the desired sound output state.
[0086]
The video / sound 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.
[0087]
It is a figure showing composition of a system in an embodiment.
It is a block diagram showing composition of television 1 in an 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.
1 is a block diagram of an AV amplifier according to a prior art of the present invention.
Explanation of sign
[0088]
Reference Signs List 1 television 2 amplifier 3 external speaker 101 memory 102 remote control
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reception unit 103 microcomputer 104 HDMI / CEC communication unit 105 tuner 106 decoder
107 display 108 internal speaker 109 external output unit 110 mode flag 201 HDMI / CEC
communication unit 202 microcomputer 203 HDMI / CEC communication Part 204 Selector 205
External signal input part 206 Speaker output part
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