发明授权
- 专利标题： Filter circuit
- 专利标题（中）： 滤波电路
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申请号： US138865申请日： 1987-12-29
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公开(公告)号： US4859881A公开(公告)日： 1989-08-22
- 发明人: Yoshihiro Yamamoto , Tsutomu Kume , Nobuo Yamazaki , Fumiharu Hashimoto , Koichi Ohya
- 申请人： Yoshihiro Yamamoto , Tsutomu Kume , Nobuo Yamazaki , Fumiharu Hashimoto , Koichi Ohya
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-310125 19861229; JPX62-001064 19870108
- 主分类号： H03H11/12
- IPC分类号： H03H11/12
摘要：
A double integration type filter circuit, consisting of a pair of integrators connected in series with each other, has a changeover switch for commutating the filter characteristics to a filter configuration which emphasizes portions proper to the characteristics of the filter circuit to facilitate filter adjustment to reduce filter adjustment time and to realize improved accuracy while providing for automatic adjustment of the filter characteristics.