发明名称 |
Television AFC system usable with offset carrier frequencies |
摘要 |
An AFC circuit for a television receiver capable of unambiguous operation with substantially offset signal frequencies has a response characteristic defined by a positive portion intermediate a pair of substantially equally sized negative portions. The circuit includes a multiplier with an unbalanced coupling between the limiter and the discriminator which has a single adjustable tuned circuit nominally tuned to 45.75 MHz.
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申请公布号 |
US4547805(A) |
申请公布日期 |
1985.10.15 |
申请号 |
US19830505576 |
申请日期 |
1983.06.20 |
申请人 |
ZENITH ELECTRONICS CORPORATION |
发明人 |
BAKER, ROY F.;BANACH, FRANK G. |
分类号 |
H03J7/02;H04N5/50;(IPC1-7):H04N5/50 |
主分类号 |
H03J7/02 |
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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