发明名称 |
Line synchronizing circuit for a picture display device |
摘要 |
A line synchronizing circuit for a picture display device comprising a voltage-controlled oscillator for generating a signal whose frequency is higher than the line frequency, a frequency dividing circuit for dividing the frequency of the oscillator signals and a phase comparison stage for generating a control voltage in dependence on the phase deviation between the signals applied thereto, more specifically a received line synchronizing signal and a locally generated reference signal. The elements of the line phase control loop, are part of an integrated circuit which functions as a frequency synthesizing circuit. The reference-frequency dividing circuit incorporated in the integrated circuit is programmed to operate with a constant divisor.
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申请公布号 |
US4567522(A) |
申请公布日期 |
1986.01.28 |
申请号 |
US19850691780 |
申请日期 |
1985.01.16 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
STROOMER, MARTINUS V. C.;BOEKHORST, FREDERICK M. |
分类号 |
H04N5/06;H04N5/12;(IPC1-7):H04N7/00 |
主分类号 |
H04N5/06 |
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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