AFPC Phase detector with no output from alternate sync pulses

Details AFPC Phase detector with no output from alternate sync pulses AFPC Phase detector with no output from alternate sync pulses

1979-05-09

1981-01-13

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358155, H04N 504

Patent

active

042452511

ABSTRACT:
A gating circuit coupled to the phase detector of an AFPC loop prevents response of the phase detector to alternate sync pulses during the equalizing and vertical sync pulse interval.

REFERENCES:
patent: 3688037 (1972-08-01), Ipri
patent: 3846584 (1974-11-01), Itoh
patent: 3878335 (1975-04-01), Balaban
patent: 4144544 (1979-03-01), Fernsler

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