Image display method
AssigneeWintek Corporation
InventorsChing-Fu Hsu, Chih-Chang Lai, Shiao-Hui Liao, Ting-Yu Chang
Life of this patent
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Abstract
An image display method including following steps is provided. A backlight of a display panel is adaptively adjusted according to a backlight adjustment factor related to the intensity value of an external light and the brightness of an original image. Brightness factors of the original image are corrected according to the adjustment of the backlight, and the original image is reset by using the corrected brightness factors and original color factors. Thereby, the problem of image distortion caused by backlight adjustment can be reduced.
Claims25
An image display method adapted to a display apparatus comprising a display panel and a backlight module, comprising:
- analyzing a brightness distribution of an original image to generate an image brightness value;
- generating an external brightness value according to an intensity value of an external light around the display panel;
- setting a backlight adjustment factor according to the external brightness value, the image brightness value, and a maximum brightness value;
- analyzing the image brightness value to set a reference turning point of a brightness conversion coordinate according to an analysis result, wherein the reference turning point is related to the backlight adjustment factor (back_dim) and the maximum brightness value;
- setting a plurality of relative turning points of the brightness conversion coordinate according to the analysis result, the reference turning point, and a plurality of predetermined slopes;
- sequentially connecting the reference turning point and the relative turning points with an origin of the brightness conversion coordinate as a starting point, so as to form a brightness conversion curve;
- correcting a plurality of brightness factors corresponding to a plurality of original gray scale values in the original image according to the brightness conversion curve, and generating a plurality of corresponding corrected gray scale values according to the corrected brightness factors;
- and
- resetting the original image by using the connected gray scale values, and adjusting a backlight of the backlight module for displaying the original image by using the backlight adjustment factor.
Dependencies are inferred from the claim text.