Noise processing system for a television receiver

Details Noise processing system for a television receiver Noise processing system for a television receiver

1981-04-01

1983-03-22

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358167, H04N 508, H04N 521

Patent

active

043778232

ABSTRACT:
A noise processing system is described for use in protecting a television receiver's sync processing path and its video processing path from impulse noise. To protect the video processing path, a first noise canceller receives a composite video signal, detects each noise pulse therein which exceeds a video noise threshold, and replaces each such noise pulse with a selected voltage level. The resultant noise processed video may then be applied to the receiver's video processing path. To protect the sync processing path, another noise canceller receives the composite video signal, detects noise pulses therein which exceed a sync noise threshold, generates a detection pulse for each such noise pulse, and combines the detection pulses with composite video so as to cancel the noise pulses. Thus, another noise processed video signal is developed for application to the receiver's sync processing path.

REFERENCES:
patent: 2852602 (1958-09-01), Foster
patent: 3878325 (1975-04-01), Cecchin et al.

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