Noise reduction apparatus for video signal

Details Noise reduction apparatus for video signal Noise reduction apparatus for video signal

1993-07-12

1995-03-21

Groody, James J.

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

348607, H04N 521

Patent

active

054000831

ABSTRACT:
A noise reduction apparatus includes a frame type noise processing circuit which detects a correlation between two successive frames of a video signal and reduces noncorrelating parts of the video signal. A processed signal from the frame type circuit is mixed with a delayed video signal at a rate determined according to a degree of motion of an image represented by the video signal. A line type noise processing circuit detects a correlation between two successive lines of a mixed video signal and reduces noncorrelating parts of the mixed video signal. The line type circuit is controlled so as to change a characteristic of noise processing according to the degree of motion.

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"A New Motion-Adaptive Video Processing System for TV Receivers and VCR's" by Tanaka et al IEEE Transaction on Consumer Electronics vol. 38, No. 3 Aug. 1992.

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