Bias gate for noise suppression circuit

Details Bias gate for noise suppression circuit Bias gate for noise suppression circuit

1976-05-07

1977-08-02

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 508, H04N 521

Patent

active

040400905

ABSTRACT:
In a gain controlled television receiver the level for detecting noise in a composite video signal is increased during the synchronization pulse intervals of the signal over that during the other intervals of the signal. This level increase is controlled by a gate which is enabled during the simultaneous occurrence of a synchronizing pulse from a sync pulse separator and a flyback pulse from a deflection circuit.

REFERENCES:
patent: 3860750 (1975-01-01), Ueda
patent: 3873768 (1975-03-01), Klein

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