Chromaticity conversion device and chromaticity conversion...

Details Chromaticity conversion device and chromaticity conversion... Chromaticity conversion device and chromaticity conversion...

2006-08-08

2006-08-08

Wallerson, Mark (Department: 2626)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C358S518000, C358S521000, C345S087000, C345S644000, C345S088000, C345S690000, C382S167000, C382S274000

Reexamination Certificate

active

07088478

ABSTRACT:
Linear chromaticity conversion is used to perform color reproduction of a liquid crystal display (LCD) compatible with a cathode ray tube (CRT). An inputted signal is subjected to processing similar to processing used in the CRT display. A light source chromaticity conversion processing portion carries out a γ correction to the signal in a γ operation portion by using γ1=γcrt of the same nonlinear characteristics as the CRT, and performs an operation of a chromaticity conversion matrix in a matrix operation portion. An LCD inverse γ correction portion uses γ2establishing γ_lcd=γlcd/γ2=1 to perform an inverse γ correction to the inputted signal. An LCD γ characteristic operation portion performs a γ correction using γ characteristics of the LCD to the signal inputted from the LCD inverse γ correction portion, outputs a picture signal, and causes an image to be displayed on the LCD.

REFERENCES:
patent: 5987167 (1999-11-01), Inoue
patent: 6160532 (2000-12-01), Kaburagi et al.
patent: 6700559 (2004-03-01), Tanaka et al.
patent: 2002/0180765 (2002-12-01), Tanaka et al.
patent: 2003/0001810 (2003-01-01), Yamaguchi et al.
patent: WO 02/07431 (2002-01-01), None

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