发明名称 |
Television receiver with synchronous detection and automatic fine tuning |
摘要 |
A television receiver has an automatic fine tuning circuit with a first phase-locked loop including a first low pass filter and a synchronous video detector with a second phase-locked loop including a second low pass filter. The cut off frequency of the first low pass filter is selected lower than the cut-off frequency of the second low pass filter, thereby enabling a stable operation of two phase-locked loops simultaneously.
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申请公布号 |
US4156255(A) |
申请公布日期 |
1979.05.22 |
申请号 |
US19770833710 |
申请日期 |
1977.09.15 |
申请人 |
SONY CORP |
发明人 |
HONGU, MASAYUKI;KAWAKAMI, HIROMI;TOKUHARA, MASAHARU |
分类号 |
H04N5/455;H03D1/22;H03J7/02;H03J7/04;H04B1/26;H04N5/50;(IPC1-7):H04N5/50 |
主分类号 |
H04N5/455 |
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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