发明名称 |
FM receiver |
摘要 |
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. <MATH> |
申请公布号 |
EP0696852(A3) |
申请公布日期 |
1997.07.16 |
申请号 |
EP19950112331 |
申请日期 |
1995.08.04 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
AKIYAMA, KIICHIRO;HORIGOME, FUMIHIKO;ICHIKAWA, TOSHIHITO |
分类号 |
H03G3/34;H04B1/10;H04B1/16 |
主分类号 |
H03G3/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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