Noise reduction in correlated digital signals

Details Noise reduction in correlated digital signals Noise reduction in correlated digital signals

1997-06-13

2000-11-07

Garber, Wendy

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 93, 348241, 348607, H04N 5911

Patent

active

061448001

ABSTRACT:
A noise component is extracted from an input correlated digital signal, such as a digital video signal in which image information is substantially the same from one frame to the next. The extracted noise is multiplied by a feedback coefficient that varies non-linearly with respect to the value of the extracted noise, this feedback coefficient being switched on a random or pseudo-random basis.

REFERENCES:
patent: 4926361 (1990-05-01), Ohtsubo et al.
patent: 5428391 (1995-06-01), Murata et al.
patent: 5719793 (1998-02-01), Nitta et al.

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