Television – Image signal processing circuitry specific to television – Color balance or temperature
Reexamination Certificate
2007-03-13
2007-03-13
Kostak, Victor R. (Department: 2622)
Television
Image signal processing circuitry specific to television
Color balance or temperature
C348S655000
Reexamination Certificate
active
10887829
ABSTRACT:
Denoting a maximum value of three primary color signals RGB by Max, a minimum value by Min, and coefficients by a and b, the color temperature of only colors close to achromatic colors is changed by adding (a*Min−b*Max) to the signal B. Denoting a luminance level by Y, and coefficients by c and d, the color temperature of only colors close to achromatic colors is changed by adding (c*Y−d*(Max−Min)) to the signal B. Color temperature of only colors close to achromatic colors is changed by multiplying the signal B by a coefficient based on a value of (Man−Min)/Max, which represents saturation.
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