Video signal processing apparatus with time base correction and

Details Video signal processing apparatus with time base correction and Video signal processing apparatus with time base correction and

1992-10-27

1994-04-12

Groody, James J.

Television

Synchronization

358320, 360 362, 360 371, 348521, H04N 506, H04N 595

Patent

active

053030460

ABSTRACT:
In a video signal processing apparatus for correcting time axis errors using a memory, with replacement of a horizontal sync signal in a video signal read out from the memory by a reference horizontal sync signal, data appearing in a vertical flyback period is not lost. A vertical flyback period detecting circuit functioning as an inhibiting means detects the vertical flyback period and produces a detection signal. An AND gate gates the detection signal and a reference horizontal sync signal generated from a sync signal generating circuit, so that a replacement of the horizontal sync signal is inhibited during the vertical flyback period, and an address, a time code and an ID code which have been inserted during the vertical flyback period are not lost.

REFERENCES:
patent: 4165524 (1979-08-01), Ninomiya
patent: 4251830 (1981-02-01), Tatami
patent: 4737861 (1988-04-01), Sekimoto

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