Method for automatically detecting and adjusting grayscale/white balance of display
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United States of America Patent
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Oct 23, 2012
Grant Date -
Mar 6, 2008
app pub date -
Dec 22, 2006
filing date -
Aug 30, 2006
priority date (Note) -
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Abstract
A method for automatically detecting and adjusting grayscale/white balance of a display comprises the steps of: detecting a chromaticity coordinate and a brightness of a present white color of the display by a detector; selecting a chromaticity coordinate of three primary colors of red, green, and blue in a known chromaticity space for automatically calculating a present mixing ratio of the three primary colors of red, green, and blue of the present white color of the display according to Grassman's Law of color mixture in colormetry; calculating a desired mixing ratio of three primary colors of red, green, and blue of an ideal white color under a predetermined color temperature; and comparing the present mixing ratio with the desired mixing ratio to obtain a proportion therebetween which is used as a set of gain values of the three primary colors of red, green of the display.
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