Television – Image signal processing circuitry specific to television – Matrixing or mixing
Patent
1997-05-06
1999-11-30
Miller, John W.
Television
Image signal processing circuitry specific to television
Matrixing or mixing
358517, 358523, H04N 967, H04N 146
Patent
active
059951656
ABSTRACT:
In a color correction apparatus for a color display device using 2-dimensional (2-D) chromaticity partitioning, a chromaticity plane is unevenly partitioned such that partitioned areas adjacent to each vertex of the chromaticity plane have larger areas. An area determining unit projects an input 3-D color signal onto the 2-D chromaticity plane, and outputs an index representing the location of the input color signal in the 2-D chromaticity plane. A first memory stores index values of the unevenly partitioned areas of the chromaticity plane, and outputs an index value corresponding to the index. A second memory stores transform coefficients of a matrix defining an input-output relationship of the color signal and outputs a predetermined number of transform coefficients stored in an address designated by the index value output by the first memory. A color signal operator performs a matrix-multiplication on the input color signals according to the predetermined number of transform coefficients output by the second memory, and outputs converted color signals.
REFERENCES:
patent: 4652905 (1987-03-01), Lippel
patent: 4989080 (1991-01-01), Ito
patent: 5504905 (1996-04-01), Kanamori et al.
patent: 5867286 (1999-02-01), Lee et al.
A New Method for Color Correction in Hardcopy from CRT Images, Journal of Imaging Science and Technology, vol. 37, No. 1, Jan./Feb. 1993, pp. 30-35.
Miller John W.
Samsung Electronics Co,. Ltd.
LandOfFree
Color correction method and apparatus using uneven two-dimension does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color correction method and apparatus using uneven two-dimension, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color correction method and apparatus using uneven two-dimension will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1679589