发明名称 FM receiver
摘要 <p>An FM receiver has a narrow pass band filter (1a), a wide pass band filter (1b), and a changeover switch (1c) for selecting one of the band filters. A noise canceler (4) is provided for detecting pulse noises included in a composite signal from a detector (3) and for producing a gating signal having a gating period for stopping the composite signal during the period. A receiving condition detector (8) detects receiving condition of the FM receiver and produces a pass band control signal for operating the changeover switch (1c) for selecting one of the pass band filters (1a; 1b). The receiving condition detector (8) applies the pass band control signal to the changeover switch (1c) to select the narrow pass band filter (1a) when a deterioration of the receiving condition is detected. Furthermore, the receiving condition detector (8) produces a gating period changing signal, and the noise canceler (4) responds to the gating period changing signal for changing the gating period. &lt;MATH&gt;</p>
申请公布号 EP0696852(A2) 申请公布日期 1996.02.14
申请号 EP19950112331 申请日期 1995.08.04
申请人 PIONEER ELECTRONIC CORPORATION 发明人 AKIYAMA, KIICHIRO, C/O KAWAGOE KOUJOU, PIONEER;HORIGOME, FUMIHIKO, C/O KAWAGOE KOUJOU, PIONEER;ICHIKAWA, TOSHIHITO, C/O KAWAGOE KOUJOU, PIONEER
分类号 H03G3/34;H04B1/10;H04B1/16;(IPC1-7):H04B1/16 主分类号 H03G3/34
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