Circuit for compensating for the drop-out of a reproduced video

Details Circuit for compensating for the drop-out of a reproduced video Circuit for compensating for the drop-out of a reproduced video

1991-09-20

1995-03-14

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 381, 348616, 358314, H04N 594

Patent

active

053981146

ABSTRACT:
A drop-out compensator for a video reproducing apparatus comprises a switch device for selectively outputting a reproduced video signal and a 1H-delayed signal in response to a drop-out detecting signal, a 1H delay circuit for delaying a video signal whose drop-out is compensated and which is output via the switch device, and an automatic level control device for comparing the synchronous signal levels of the reproduced video signal and 1H-delayed signal, amplifying the 1H-delayed signal output from the 1H delay circuit in response to the result of the comparison, thereby adjusting the level of the 1H-delayed signal to be supplied to the switch device to match that of the reproduced video signal. The compensator can automatically adjust the amplitude of a drop-out-compensated signal by comparing the levels of the synchronous signal of a reproduced video signal and the synchronous signal of a 1H-delayed signal and matching the amplitudes of 1H-delayed signal and the reproduced video signal.

REFERENCES:
patent: 4122489 (1978-10-01), Bolger et al.
patent: 4398210 (1983-08-01), Liu et al.
patent: 5010416 (1991-04-01), Yasumura et al.

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