发明公开
- 专利标题： Matched filter
- 专利标题（中）： 信号过滤器
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申请号： EP96120648.9申请日： 1996-12-20
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公开(公告)号： EP0782258A2公开(公告)日： 1997-07-02
- 发明人: Qin, Xiaoling c/o Yozan Inc. , Suzuki, Kunihiko c/o Yozan Inc. , Shou, Guoliang c/o Yozan Inc. , Zhou, Changming c/o Yozan Inc. , Chen, Jie c/o Yozan Inc.
- 申请人： YOZAN INC. , SHARP KABUSHIKI KAISHA
- 申请人地址： 3-5-18, Kitazawa, Setagaya-ku Tokyo 155 JP
- 专利权人： YOZAN INC.,SHARP KABUSHIKI KAISHA
- 当前专利权人： YOZAN INC.,SHARP KABUSHIKI KAISHA
- 当前专利权人地址： 3-5-18, Kitazawa, Setagaya-ku Tokyo 155 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP351407/95 19951226; JP115719/96 19960412
- 主分类号： H03H17/02
- IPC分类号： H03H17/02 ; H03H11/04
摘要：
The present invention has an object to provide a matched filter which can refresh whole of a circuit keeping the speed of a calculation with a small size circuit. The first and second addition circuits of a matched filter of the present invention are classified into a plurality of groups, the first and second auxiliary adders are settled for replacing functions of groups of the first and second adders, respectively, outputs of the first and second adders are input to the first and second subtractors, respectively, the refreshing means appropriately refreshes groups replaced by the first and second auxiliary adders. Further, the present invention decreases the number of auxiliary sampling and holding circuits to be one, and decides the intervals of refreshment with considering the change of voltage caused by leak as well as the permissible error of output voltage.
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