发明公开
EP0563459A1 Voice-operated microphone and speaker for a radio transceiver
失效
Sprachgesteuertes Mikrophon und LautsprecherfüreinenFunksendeempfänger。
- 专利标题： Voice-operated microphone and speaker for a radio transceiver
- 专利标题（中）： Sprachgesteuertes Mikrophon und LautsprecherfüreinenFunksendeempfänger。
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申请号： EP92200960.0申请日： 1992-04-03
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公开(公告)号： EP0563459A1公开(公告)日： 1993-10-06
- 发明人: Chen, Shih-Chung
- 申请人： Chen, Shih-Chung
- 申请人地址： 1-21, Yu Lo Hsin Tsuen, Nan Yang Road Feng Yuan, Taichung TW
- 专利权人： Chen, Shih-Chung
- 当前专利权人： Chen, Shih-Chung
- 当前专利权人地址： 1-21, Yu Lo Hsin Tsuen, Nan Yang Road Feng Yuan, Taichung TW
- 代理机构： Kupecz, Arpad
- 主分类号： H04B1/46
- IPC分类号： H04B1/46
摘要：
A voice controlled speaker microphone of a wireless intercom, wherein while the wireless intercom is transmitting voices, the bias voltage of the manual switch and condenser microphone is divided to give a current of 0.6mA to 1mA and then, while receiving voices, the speaker's driving voltage is multiplied and rectified to give a current of 1mA to 30mA, then provided to charge the battery and supply the voice-controlled circuit.
公开/授权文献
- EP0563459B1 Wireless intercom 公开/授权日：1997-10-29
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