Circuit arrangement for extracting a field synchronizing signal

Details Circuit arrangement for extracting a field synchronizing signal Circuit arrangement for extracting a field synchronizing signal

1981-10-07

1983-11-08

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 504

Patent

active

044145705

ABSTRACT:
A circuit arrangement for extracting a field synchronizing signal from a television signal comprising binary switching stages. Herein, the duration of a broad field synchronizing pulse is determined because the peak value thereof is sampled with a clock signal, the period of the clock signal being significantly shorter than the duration of a line synchronizing pulse. For this purpose the frequency thereof may be the color sub-carrier frequency or a multiple thereof.

REFERENCES:
patent: 3671669 (1972-06-01), Abbott
patent: 3878335 (1975-04-01), Balaban
patent: 4110789 (1978-08-01), Maly
patent: 4319275 (1982-03-01), Tanaka
patent: 4334243 (1982-06-01), Srivastava
patent: 4353091 (1982-10-01), Hoppe

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