Video noise reduction system with measured noise input

Details Video noise reduction system with measured noise input Video noise reduction system with measured noise input

1989-11-06

1991-06-18

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, H04N 5213

Patent

active

050253166

ABSTRACT:
A television receiver includes a motion detection circuit which compares corresponding portions of the picture signal from adjacent fields or frames and based on this comparison generates movement signals. In addition, the television receiver includes a noise measurement circuit which compares corresponding portions of succeeding scanning lines, these corresponding portions having identical contents with the exception of any added noise, accumulates the results of these comparisons, and output the accumulated results at the end of each field as a noise signal. The motion signals and the noise signal are then applied as control signals to an adjustable noise reduction circuit for reducing the noise content in the television signal.

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patent: 4796088 (1989-01-01), Nishimura et al.
patent: 4873574 (1989-10-01), Darby

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