发明授权
- 专利标题： Video signal play-back circuit
- 专利标题（中）： 视频信号回放电路
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申请号： US883155申请日： 1978-03-03
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公开(公告)号： US4210942A公开(公告)日： 1980-07-01
- 发明人: Hisashi Nakamura , Toshiyuki Akiyama , Akira Shibata , Yoichi Tokunaga
- 申请人： Hisashi Nakamura , Toshiyuki Akiyama , Akira Shibata , Yoichi Tokunaga
- 申请人地址： JPX
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX52-25943 19770311
- 主分类号： H04N5/93
- IPC分类号： H04N5/93 ; G11B5/027 ; G11B5/035 ; H03G5/14 ; G11B5/45 ; G11B5/02
摘要：
In a video signal play-back circuit connected so that a play-back signal from a magnetic head may be applied to an amplifier circuit through a resonance circuit which consists of an inductance element and a capacitance element, a resistor for adjusting the quality factor Q of the resonance circuit is connected between one terminal of the resonance circuit and one output terminal of the amplifier circuit, thereby to reduce thermal noises which develop from the Q adjusting resistor.
公开/授权文献
- US5926292A Image processing apparatus 公开/授权日：1999-07-20