Digital synchronizing circuit

Details Digital synchronizing circuit Digital synchronizing circuit

1978-03-03

1980-09-23

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 504

Patent

active

042246393

ABSTRACT:
The invention relates to a circuit arrangement for vertical synchronization of a television receiver. Vertical synchronization pulses are generated by dividing pulses derived from a line frequency signal and these signals are compared with the received synchronization pulses. The circuit is designed to ignore spurious received sync pulses and to compensate for omitted sync pulses but automatically resets the divider for rephasing the generated sync signals when found to be out of phase with the received signals.

REFERENCES:
patent: 3688037 (1972-08-01), Ipri
patent: 3708621 (1973-01-01), Yamamoto
patent: 3855496 (1974-12-01), Ciciora
patent: 3904823 (1975-09-01), Van Straaten
patent: 3906155 (1975-09-01), Van Straaten
patent: 3935388 (1976-01-01), Brinkmann
patent: 4096528 (1978-06-01), Tuma et al.

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