Chrominance signal processing apparatus, image-sensing...

Details Chrominance signal processing apparatus, image-sensing... Chrominance signal processing apparatus, image-sensing...

2006-09-26

2006-09-26

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S222100, C348S645000

Reexamination Certificate

active

07113207

ABSTRACT:
The present invention relates to a chrominance signal processing apparatus and method for providing optimal color processing according to the hue of the color image data. Red, green and blue signals are input to a chroma composition ratio determination circuit that generates and outputs the RGB color composition ratio (α:β:γ). A chroma suppression luminance signal generating circuit then generates a chroma suppression luminance signal Ya based on the RGB signals and the color composition ratio. A chroma suppression gain determination circuit outputs the gain for the chroma suppression luminance signal based on a table in which output gain setting values corresponding to the chroma suppression luminance signals are recorded. Multipliers then multiply input color-difference signals Cr, Cb by the gain and output a suppressed color-difference signals (Cr×G, Cb×G) according to the color composition ratio (α:β:γ).

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EPO Communication dated Mar. 4, 2005 w/European Search Report dated Feb. 25, 2005.

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