发明授权
US07970155B2 Video/audio output device and external speaker control apparatus
有权
视频/音频输出设备和外部扬声器控制装置
- 专利标题: Video/audio output device and external speaker control apparatus
- 专利标题(中): 视频/音频输出设备和外部扬声器控制装置
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申请号: US11911697申请日: 2006-09-21
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公开(公告)号: US07970155B2公开(公告)日: 2011-06-28
- 发明人: Sako Asayama , Hiroshi Kase , Mitsuteru Kataoka
- 申请人: Sako Asayama , Hiroshi Kase , Mitsuteru Kataoka
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2005-289093 20050930
- 国际申请: PCT/JP2006/318698 WO 20060921
- 国际公布: WO2007/040053 WO 20070412
- 主分类号: H02B1/00
- IPC分类号: H02B1/00 ; H04R29/00
摘要:
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.
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