Noise eliminating circuit

Details Noise eliminating circuit Noise eliminating circuit

1978-10-12

1981-05-19

Heyman, John S.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

328163, 328151, 455222, H03B 104, H03K 3013

Patent

active

042687934

ABSTRACT:
A noise eliminating circuit comprising means for generating a signal having a phase difference with respect to an input signal, means for simultaneously cutting off the input signal and the phase difference signal at the time when a noise is entering the circuit, means for retaining the levels of the respective signals that have developed immediately before said signals are cut off, and means for outputting a retained signal of one level by adding the same to a retained signal of the other level at a given time constant, thereby to make up for the signal interruption, preventing deterioration in tone quality caused by such signal interruption.

REFERENCES:
patent: 3534282 (1970-10-01), Day
patent: 3689845 (1972-09-01), Hepp
patent: 3978412 (1976-08-01), Frerking
patent: 4154980 (1979-05-01), Schmidt et al.

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