Noise cancellation circuit

Details Noise cancellation circuit Noise cancellation circuit

1978-08-09

1980-05-20

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358157, 358167, H04N 521, H04N 544

Patent

active

042042194

ABSTRACT:
The peak value of an input signal is detected for comparison with the instantaneous value of the input signal to control the detected peak value at a constant level in a feedback loop. When the instantaneous value of the input signal exceeds a certain limit established relative to the controlled peak level, an offset voltage is generated to cancel the noise.

REFERENCES:
patent: 3700803 (1972-10-01), Rhee
patent: 4040090 (1977-08-01), Haynes

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