发明公开
- 专利标题： A filter for use in a cable television system
- 专利标题（中）： 一种用于在有线电视系统中使用的过滤器。
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申请号： EP83306737.4申请日： 1983-11-04
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公开(公告)号： EP0109795A2公开(公告)日： 1984-05-30
- 发明人: Petrus, Peter R. , St. Louis, Raymond F.
- 申请人： PICO PRODUCTS, INC.
- 申请人地址： 1001 Vine Street Liverpool New York 13088 US
- 专利权人： PICO PRODUCTS, INC.
- 当前专利权人： PICO PRODUCTS, INC.
- 当前专利权人地址： 1001 Vine Street Liverpool New York 13088 US
- 代理机构： Cross, Rupert Edward Blount
- 优先权： US443546 19821122
- 主分类号： H03H7/07
- IPC分类号： H03H7/07 ; H03H7/12 ; H04N7/16
摘要：
A filter for use in a cable television system for filtering out a given channel comprising a two pole filter, said filter including one pole which is fixed at the center frequency to be tuned out and a second variable pole responsive to an input voltage, the second pole adapted to vary in frequency about the first pole.
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IPC分类:
