Noise reduction apparatus

Details Noise reduction apparatus Noise reduction apparatus

1989-09-12

1990-03-20

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

455304, 455306, 375 57, 375103, H04B 110, H04L 2710

Patent

active

049107992

ABSTRACT:
A noise reduction apparatus in which an input signal is supplied to a first signal path (2) including a variable low-pass filter (2) and a second signal path (1), a control circuit (4) control is such that a cut-off frequency of the variable low-pass filter (2) is varied in accordance with a frequency of the input signal S(1), and an output signal is obtained from the first signal path when noise is generated and from the second signal path when noise is not generated.

REFERENCES:
patent: 3947636 (1976-03-01), Edgar
patent: 4304004 (1981-12-01), Von der Neyen
patent: 4501004 (1985-02-01), Yoshida et al.
patent: 4648127 (1987-03-01), Jongepier

Affiliated with

Also associated with

Rating

Noise reduction apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Noise reduction apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-798156