Invention Grant
US08237688B2 Contrast control apparatus and contrast control method and image display 有权
对比度控制装置和对比度控制方法及图像显示

Contrast control apparatus and contrast control method and image display
Abstract:
A contrast control apparatus includes a statistic distribution unit and a characteristic judging unit. The statistic distribution unit receives an image data to have a brightness histogram distribution in statistic. The brightness histogram distribution has a plurality of statistic nodes, respectively corresponding to a plurality of gray levels in statistic. The characteristic judging unit at least receives the brightness histogram distribution to determine a brightness adjusting signal for the image data, so as to proportionally adjust a brightness of a display light source. In addition, the characteristic judging unit also outputs a contrast curve, and the contrast curve represents a plurality of adjusted nodes, respectively corresponding to the statistic nodes. As a result, the brightness of the statistic nodes is changed.
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