DISPLAY DEVICE AND METHOD OF CONTROLLING BACKLIGHT

Abstract: a display device includes a backlight including a plurality of backlight blocks, a display panel configured to display an image with light from the backlight, and a controller. the controller is configured to acquire a video frame, determine gray-level feature values to be associated with the plurality of backlight blocks from gray levels of pixels specified in the video frame, determine emission amounts for the plurality of backlight blocks from the gray-level feature values in accordance with a current conversion function, and determine whether to change the current conversion function based on results of comparison of a statistic of the emission amounts of the plurality of backlight blocks with one or more predetermined threshold emission amounts.

Inventor(s): Kouichi OOGA

CPC Classification: G09G3/342 ({using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines})

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