Digital sync separator

Details Digital sync separator Digital sync separator

1982-08-17

1985-01-01

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358154, H04N 508, H04N 510

Patent

active

044918704

ABSTRACT:
A digital sync separator has a separator for supplying composite sync from composite video. A counter counts clock pulses and is reset by the composite sync signals and one of its outputs. The separator can comprise a pair of controlled switches, one switch being a clamp, the other supplying a signal to a low pass filter and attenuator, and a comparator to compare the composite video with the attenuated signal.

REFERENCES:
patent: 3962540 (1976-06-01), Kokado
patent: 4281345 (1981-07-01), Warn
patent: 4414570 (1983-11-01), Braune et al.

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