Noise reduction circuit for a video signal

Details Noise reduction circuit for a video signal Noise reduction circuit for a video signal

1984-11-28

1987-02-24

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

375103, 455307, H04N 5213, H04B 110

Patent

active

046461531

ABSTRACT:
A noise reduction circuit for a video signal, comprises a feedback type comb filter in which an output video signal of a delay circuit which delays a video signal by one or two horizontal scanning periods, is fed back to an input side of the delay circuit through a feedback path, and an equalizer circuit coupled in series with the feedback type comb filter. The feedback path comprises a highpass or bandpass filter circuit and a coefficient multiplier which are coupled in series. The equalizer circuit has a frequency characteristic complementary to an envelope characteristic in a frequency characteristic of the feedback type comb filter.

REFERENCES:
patent: 4101837 (1978-07-01), Clayton
patent: 4243956 (1981-01-01), Lemoussu
patent: 4404600 (1983-09-01), Murakami

Affiliated with

Also associated with

Rating

Noise reduction circuit for a video signal 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 circuit for a video signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction circuit for a video signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-112811