发明授权
- 专利标题： Audio recording and playback device, and power feed method for audio recording and playback device
- 专利标题（中）： 录音和播放设备，录音和播放设备的馈电方式
-
申请号： US13554074申请日： 2012-07-20
-
公开(公告)号： US09131291B2公开(公告)日： 2015-09-08
- 发明人: Koji Mizobuchi
- 申请人： Koji Mizobuchi
- 申请人地址： JP Tokyo
- 专利权人： Olympus Corporation
- 当前专利权人： Olympus Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Straub & Pokotylo
- 代理商 John C. Pokotylo
- 优先权： JPP2011-168126 20110801
- 主分类号： H04R3/00
- IPC分类号： H04R3/00
摘要：
An audio recording and playback device, of the present invention, capable of recording and playing back audio, comprises an audio input section for converting audio input during an audio recording operation into an electrical audio signal, a power feed section for carrying out power feeds to the audio input section by means of a balanced transmission line, an amplifier section for amplifying the audio signal, a boost section for generating a power feed voltage to be applied to the balanced transmission line and outputting to the power feed section, a output voltage changing section for carrying out control to vary the output voltage of the boost section, and a control section for controlling the power feed voltage of the power feed section by controlling the power feed section and the output voltage changing section.
公开/授权文献
信息查询
