Noise removing apparatus

Details Noise removing apparatus Noise removing apparatus

1980-03-25

1982-02-02

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Squelch

179 1GD, 328165, 455212, 455304, 455305, H04B 112, H04H 500

Patent

active

043143776

ABSTRACT:
A noise removing apparatus is interposed between an FM detecting circuit and a stereo demodulating circuit. The noise removing apparatus is responsive to a pulsive noise included in the output from the detecting circuit to enable a first gate to interrupt transmission of the output. Although the stereo pilot signal is disturbed during the interruption period, the disturbed stereo pilot signal is canceled by a pseudo-stereo pilot signal (a signal similar to the pilot signal) separately generated, whereby the disturbed stereo pilot signal is prevented from being applied to the stereo demodulating circuit.

REFERENCES:
patent: 4066845 (1978-01-01), Kishi
patent: 4195203 (1980-03-01), Sakai et al.
patent: 4246441 (1981-01-01), Sugai et al.

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