| 摘要 |
The present invention relates to a dynamic contrast ratio processing method and apparatus of a liquid crystal displaying apparatus. The method includes: performing a histogram statistics processing on input data of the present frame, dividing a statistics processing result into N gray groups, and calculating the a data amount corresponding to each gray group; setting gray groups whose corresponding data amounts are larger than or equal to a first threshold as gray groups with priority, and setting a gray group having the highest luminance in gray groups with priority as a main priority gray group; determining whether the luminance of the main priority gray group of the present frame is the same as that of the main priority gray group of a previous frame; if it is, comparing data amounts with corresponding tolerance values to determine whether it is necessary to change the luminance control parameter, otherwise, obtaining the luminance control parameter of the present frame according to the main priority gray group of the present frame; outputting the luminance control parameter of the present frame at last. The present invention improves flickering phenomenon effectively and enhances picture quality.
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