Noise reduction in electrical signals

Details Noise reduction in electrical signals Noise reduction in electrical signals

1978-03-06

1980-03-18

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 521

Patent

active

041942191

ABSTRACT:
Reduction of noise in a television signal is achieved by comparing signals from successive scans and noting the differences. Low amplitude differences are assumed to represent noise and are attenuated. Differences above a predetermined level are assumed to represent movement and are not so attenuated. The attenuation is achieved by a multiplier which receives as multiplier the output of a non-linear transfer characteristic element. The non-linear element receives the differences after rectification and after passing through a variable-gain element. The non-linear element is such that above a predetermined value a constant predetermined minimum attenuation factor applies.

REFERENCES:
patent: 4058836 (1977-11-01), Drewery et al.
patent: 4064530 (1977-12-01), Kaiser

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1126739