发明名称 LIQUID CRYSTAL DISPLAY APPARATUS AND LUMINANCE CONTROL METHOD THEREOF
摘要 For the purpose of suppressing untrue black with the change in luminance of video, which is displayed as the same object, being reduced to improve the contrast, there is provided a liquid crystal display apparatus that is capable of: extracting the pixel frequency distribution of an input video signal on a luminance level basis, and extracting the pixel frequency distribution of specific color from a color-difference signal of input video in a screen area, the color-difference signal being determined from the luminance distribution of a plurality of backlights; on the basis of the result of the extraction, determining the control amount of the luminance of the plurality of backlights, and the correction amount of the luminance of a liquid crystal panel, on a screen area basis; controlling the luminance of the plurality of backlights on the basis of the control amount of the luminance; and at the same time, controlling the luminance of the input video signal on the basis of the correction amount of the luminance.
申请公布号 US2008297463(A1) 申请公布日期 2008.12.04
申请号 US20080017371 申请日期 2008.01.22
申请人 TSURU YASUTAKA;OUCHI SATOSHI;MURATA SEIJI;NAGAYOSHI MAYUMI 发明人 TSURU YASUTAKA;OUCHI SATOSHI;MURATA SEIJI;NAGAYOSHI MAYUMI
分类号 G09G3/36;G02F1/13357 主分类号 G09G3/36
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