White point adjusting method, color image processing method, white point adjusting apparatus and liquid crystal display device
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United States of America Patent
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Mar 1, 2005
Grant Date -
N/A
app pub date -
Oct 18, 2000
filing date -
Oct 18, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A white point adjusting apparatus is provided to adjust an achromatic color level for an input video signal including a plurality of color signals, and display an adjusted image on a liquid crystal module. This adjusting apparatus comprises: a first table for setting a white point by deciding an offset quantity of at least one color signal from a highest gray level for each color temperature; a second table for setting an offset quantity of the color signal to converge a halftone white point for each color temperature set by the first table; and a white point adjusting unit for adding the offset quantities set by the first and second tables and to the input video signal.
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