Noise clearing system

Details Noise clearing system Noise clearing system

1977-04-25

1978-12-19

Safourek, Benedict V.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

325 65, 325476, 358167, H04B 110

Patent

active

041308050

ABSTRACT:
A noise clearing system is described which comprises a means for applying a signal representing the existing period of an impulsive noise which is contained in an incoming signal, a means for detecting the impulsive noise, a means for reversing the phase of the detected noise, a means for summing the phase-reversed noise and the incoming signal to clear the noise, and a means for actuating the noise detecting means and the noise phase-reversing means in response to the noise period representing signal during the existing period of the noise.

REFERENCES:
patent: 3213450 (1965-10-01), Goor
patent: 3851253 (1974-11-01), Eastmond
patent: 3947636 (1976-03-01), Edgar
patent: 3978412 (1976-08-01), Frerking
patent: 3979683 (1976-09-01), Ikeda
patent: 4006421 (1977-02-01), Mermoz

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