Noise sensitivity reduction apparatus for a TV receiver AGC syst

Details Noise sensitivity reduction apparatus for a TV receiver AGC syst Noise sensitivity reduction apparatus for a TV receiver AGC syst

1981-05-29

1983-10-04

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 552

Patent

active

044082290

ABSTRACT:
The composite video signal input to the voltage comparator of a TV receiver AGC system is subjected to the filtering action of a low pass filter for noise suppression purposes. A wideband signal path, bypassing the low pass filter, is enabled during trailing edges of noise impulses exceeding the normal sync peak level, in order to substantially preclude delay of the fall of said trailing edges.

REFERENCES:
patent: 4237487 (1980-12-01), Ikeda et al.
patent: 4292598 (1981-09-01), Yasumura
Philips Technical Information Brochure No. 034, (1977), entitled "TDA 2540 and TDA 2541-New Vision IF ICs".

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