发明申请
US20090051825A1 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设备
- 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设备
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申请号: US11911697申请日: 2006-09-21
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公开(公告)号: US20090051825A1公开(公告)日: 2009-02-26
- 发明人: Sako Asayama , Hiroshi Kase , Mitsuteru Kataoka
- 申请人: Sako Asayama , Hiroshi Kase , Mitsuteru Kataoka
- 优先权: JP2005-289093 20050930
- 国际申请: PCT/JP2006/318698 WO 20060921
- 主分类号: H04N5/60
- IPC分类号: H04N5/60
摘要:
The invention provides an external speaker control apparatus for causing 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 for 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 output mode from the video and audio output apparatus in the case where the microcomputer 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 based on the information indicating the audio output mode.
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