发明名称 AUDIOVISUAL SYSTEM
摘要 An audiovisual system is provided in which the operability of selection by a user between internal speakers of a TV and external speakers connected to an audio amplifier has been improved, thus reducing the burdensomeness of operation. When an audio amplifier (100A) is powered on, a control part (106A) of the audio amplifier (100A) judges that use of external speakers (105) connected to the audio amplifier (100A) has been selected, and transmits a control signal for putting internal speakers (205) of a TV (200A) in a muted state to a control part (206A) of the TV (200A) via a communication means (300). Conversely, when the audio amplifier (100A) is powered off, the control part (106A) judges that use of the internal speakers (205) of the TV (200A) has been selected, and transmits a control signal for canceling the muted state of the internal speakers (205) to the control part (206A) of the TV (200A) via the communication means (300).
申请公布号 EP1947843(A4) 申请公布日期 2010.07.07
申请号 EP20060822623 申请日期 2006.10.31
申请人 PANASONIC CORPORATION 发明人 SAKAMOTO, AKIFUMI;MIZOGUCHI, MASAHIKO;MURAKAMI, TOSHIKI;MITANI, AKIHIRO;OTSUKA, KOICHI;ITOGA, MUTSUMI
分类号 H04N5/60;H04L12/28;H04N5/44 主分类号 H04N5/60
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