Color television decoder for separating chrominance signals from

Details Color television decoder for separating chrominance signals from Color television decoder for separating chrominance signals from

1989-07-10

1991-02-12

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 978

Patent

active

049928562

ABSTRACT:
A color television decoder is provided for separating chrominance signals from a color video signal. The decoder has a variable two dimensional finite impulse response filter, comprising delay lines which provide signals representing an array of picture points around the picture point being imaged, and a variable combiner which linearly combines the signals with variable coefficients. A picture analyzer analyzes the picture and controls the variable coefficients so as to control the filter response to separate the chrominance signal. The luminance signal may be separated by subtracting the chrominance signal from the delayed color video signal.

REFERENCES:
patent: 4141035 (1979-02-01), Maxemchuk et al.
patent: 4345268 (1982-08-01), Clarke
patent: 4688080 (1987-08-01), Wagner
English translation of Japan 139090 (Kondou).
British Broadcasting Corp., Designs Dept. Technical Memorandum No. 1.188(84), "Transversal Filters for PAL Decoders", published in 1984.

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