Color video signal processing method and apparatus for convertin

Details Color video signal processing method and apparatus for convertin Color video signal processing method and apparatus for convertin

1996-08-22

1998-11-03

Faile, Andrew I.

Television

Image signal processing circuitry specific to television

Matrixing or mixing

348660, 348708, 345154, H04N 964, H04N 967

Patent

active

058316876

ABSTRACT:
In a color video signal processing method, color difference component signals are converted into RGB component signals by a digital to digital conversion so as to reduce a size of a processing unit used for the conversion. An analog composite signal is converted into analog color difference component signals. The analog color difference component signals are then converted into digital color difference component signals. The digital color difference component signals are converted into digital RGB component signals by a digital to digital conversion based on an approximation method. Finally, the digital RGB component signals are converted into analog RGB component signals. The digital-to-digital conversion may be performed in accordance with equations in which each factor is a fractional number having a denominator of a power of 2.

REFERENCES:
patent: 4725894 (1988-02-01), Sasaki et al.
patent: 5006927 (1991-04-01), Creed et al.
patent: 5703993 (1997-12-01), Kendo et al.

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