Adaptive video signal compression

Details Adaptive video signal compression Adaptive video signal compression

1994-10-03

1996-09-10

Metjahic, Safet

Television

Image signal processing circuitry specific to television

Chrominance signal amplitude control

348652, 348713, H04N 568

Patent

active

055550312

ABSTRACT:
In a video signal processing circuit, an adaptive signal compression is realized by correcting the color saturation by multiplication of color difference signals (R-Y, G-Y) by a same correction factor in such a way that color signal values (R, G, B) remain below their respective maximally allowed values without the luminance (Y) being limited as well. Preferably, the correction factor is obtained in dependence upon a non-linearly compressed luminance signal (Y').

REFERENCES:
patent: 4499486 (1985-02-01), Favreau et al.
patent: 4712132 (1987-12-01), Soca
patent: 4757373 (1988-07-01), Van Rooy
patent: 4812902 (1989-03-01), Fuchsberger
patent: 4831434 (1989-05-01), Fuchsberger
patent: 5124785 (1982-06-01), Hirose et al.

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