Patent ID: 8059082

Claim:
A method of adjusting a light source of a display device, the display device comprising a display panel having display pixels for modulating light originating from the light source; and processing circuitry coupled to the display panel and the light source, the processing circuitry having an input for receiving an input signal representing gray levels of pixels of an image to be displayed on the display panel, the method comprising: selecting a dimmed brightness level of the light source in dependence on the gray levels of the image pixels, the selecting step comprising: selecting the dimmed brightness level from a plurality of temporary dimmed brightness levels, said selecting in dependence on: (i) a number of occurrences of a gray level corresponding to a brightness level of display pixels above the temporary dimmed brightness levels, and/or (ii) a number of occurrences of a gray level corresponding to a brightness level of display pixels below a predetermined brightness level being a fixed or adjustable level determined in dependence on the temporary dimmed brightness levels, and adapting the input signal in dependence on the dimmed brightness level.