Video/audio output device and external speaker control apparatus
View Patent ↗An external speaker control apparatus causes only one of an internal speaker and an external speaker to output audio when a power supply of the external speaker control apparatus which controls the external speaker changes from an off state to an on state, the external speaker being a speaker outside a video and audio output apparatus. The external speaker control apparatus includes a microcomputer for detecting the change of the power supply of an amplifier from an off state to an on state and a HDMI/CEC communication unit or outputting an instruction requesting output of information which indicates the audio output mode to the video and audio output apparatus while at the same time receiving the information indicating the audio detects the change of the power supply from an off state to an on state, wherein the microcomputer controls the output of the audio from the external speaker according to the information indicating the audio output mode.
1. A video and audio output apparatus which outputs video and audio, comprising:
an internal speaker configured to output the audio;
a holding unit configured to hold information which indicates one of a plurality of audio output modes;
an accepting unit configured to accept an instruction from outside the video and audio output apparatus;
a management unit configured to cause the holding unit to hold the information according to a mode-specifying instruction for specifying an output mode of the audio accepted by the accepting unit, the information indicating an output mode of the audio corresponding to the output mode of the audio specified by the mode-specifying instruction;
a receiving unit configured to receive an instruction from an external speaker control apparatus which controls an external speaker outside of the video and audio output apparatus; and
an output unit configured to output the information indicating the audio output mode held in the holding unit to the external speaker control apparatus when the receiving unit receives, from the external speaker control apparatus, an instruction requesting output of the information indicating the audio output mode.
2. The video and audio output apparatus according to claim 1 ,
wherein the management unit is configured to cause, according to the mode-specifying instruction, the holding unit to hold one of (a) information indicating a first audio output mode for causing the internal speaker to output the audio, and (b) information indicating a second audio output mode for causing the external speaker to output the audio.
3. The video and audio output apparatus according to claim 1 , further comprising
a control unit configured (a) to cause the internal speaker to output the audio when the information indicating the first audio output mode for outputting the audio from the internal speaker is held in the holding unit, and (b) not to output the audio from the internal speaker when the information indicating the second audio output mode for outputting the audio from the external speaker is held in the holding unit.
4. The video and audio output apparatus according to claim 1 further comprising:
a control unit configured to control the output of the audio from the internal speaker according to the information indicating the audio output mode held in the holding unit; and
a detection unit configured to detect a change of the power supply of the video and audio output apparatus from an off state to an on state,
wherein the output unit is further configured to output the information indicating the audio output mode held in the holding unit to an external speaker control apparatus which controls the external speaker when the detection unit detects the change of the power supply from an off state to an on state.
5. An audio output mode notification method comprising:
holding the information which indicates one of a plurality of audio output modes in a holding unit according to an instruction specifying the audio output mode, the information indicating an output mode of the audio corresponding to the output mode of the audio specified by the mode-specifying instruction;
receiving an instruction from an external speaker control apparatus which controls a speaker outside a video and audio output apparatus; and
outputting the information indicating the audio output mode held in the holding unit to the external speaker control apparatus when an instruction requesting the output of the information indicating the audio output mode is received from the external speaker control apparatus.
6. The audio output mode notification method according to claim 5 further comprising:
controlling the output of the audio from the internal speaker of a video and audio output apparatus, according to the information indicating the audio output mode held in the holding unit;
detecting a change of the power supply of the video and audio output apparatus from an off state to an on state; and
outputting the information indicating the audio output mode held in the holding unit to the external speaker control apparatus when the change of the power supply from an off state to an on state is detected.
7. An integrated circuit comprising:
a management unit configured to cause a holding unit to hold information which indicates one of a plurality of audio output modes, according to an instruction specifying the output mode of the audio, the information indicating an output mode of the audio corresponding to the output mode of the audio specified by the mode-specifying instruction;
a receiving unit configured to receive an instruction from an external speaker control apparatus which controls a speaker outside a video and audio output apparatus; and
an output unit configured to output the information indicating the audio output mode held in the holding unit to the external speaker control apparatus when the receiving unit receives, from the external speaker control apparatus, an instruction requesting output of the information indicating the audio output mode.
8. The integrated circuit according to claim 7 further comprising:
a control unit configured to control the audio outputted from an internal speaker of a video and audio output apparatus, according to the information indicating the audio output mode held in the holding unit; and
a detection unit configured to detect a change of the power supply of the video and audio output apparatus from an off state to an on state, wherein the output unit is further configured to output the information indicating the audio output mode held in the holding unit to the external speaker control apparatus when the detection unit detects the change of the power supply from an off state to an on state.
9. A non-transitory computer-readable recording medium storing a program, the program causing a computer to execute steps comprising:
causing a holding unit to hold information which indicates one of a plurality of audio output modes, according to an instruction specifying the audio output mode, the information indicating an output mode of the audio corresponding to the output mode of the audio specified by the mode-specifying instruction;
receiving an instruction from an external speaker control apparatus which controls a speaker outside a video and audio output apparatus; and
outputting the information indicating the audio output mode held in the holding unit to an external speaker control apparatus in the case where an instruction requesting the output of the information indicating the audio output mode is received from the external speaker control apparatus.
10. The program according to claim 9 , wherein the program causes the computer to execute steps further comprising:
controlling output of the audio from an internal speaker of a video and audio output apparatus according to the information indicating the audio output mode held in the holding unit;
detecting a change of the power supply of the video and audio output apparatus from an off state to an on state; and
outputting the information indicating the audio output mode held in the holding unit to the external speaker control apparatus when the change of the power supply from an off state to an on state is detected.