Skew error correction circuit for video signal reproducing apparatus
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United States of America Patent
Stats
-
May 24, 1988
Grant Date -
N/A
app pub date -
Jun 26, 1985
filing date -
Jun 26, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A skew error correction device for a video signal in a television receiver or the like is disclosed. An oscillator produces an oscillation output signal of a constant frequency which is phase-synchronized with horizontal synchronization information included in an input video signal, and the output signal is used as a write clock. In a vertical blanking period, the oscillation output signal or a frequency-divided signal thereof is phase-compared with an output of a reference signal generator of a predetermined frequency or a frequency-divided signal thereof, and a phase error signal is negatively fed back to voltage control means which voltage-controls the oscillation frequency of the oscillator. Thus, the oscillation frequency is stabilized without using an AFC circuit and a skew error in the input video signal is eliminated.
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