Patent ID: 8294735
Filing Date: 2012-10-23
Classification: G09G

Abstract:
1. A method for automatically detecting and adjusting grayscale/white balance of a display, which is applied to the display and comprising steps of: detecting a chromaticity coordinate and a brightness of a present white color shown on the display under a predectermind color temperature by using a detector; selecting a chromaticity coordinate of three primary colors of red, green, and blue in a known chromaticity space to calculate a present mixing ratio by using the three primary colors of red, green, and blue for producing the present white color according to Grassman's Law of color mixture in colormetry; calculating a desired mixing ratio by using the three primary colors of red, green, and blue for producing an ideal white color under the predetermind color temperature according to Grassman's Law of color mixture in colormetry; comparing the present mixing ratio of the present white color with the desired mixing ratio of the ideal white color to obtain a proportion therebetween which is then used to generate a set of gain values for adjusting the three primary colors of red, green, and blue inputted to the display; and writing the gain values into a memory of the display for automatically adjusting grayscale/white balance of the three primary colors of red, green and blue inputted to the display and then generating three new primary colors of red, green and blue outputted to a panel of the display.