Patent ID: 8643682

Claim:
A method for driving a light source, the method comprising: determining which one of the light-emitting blocks the pixel data corresponds to, the one light-emitting block corresponding to an image block of the display comprising a plurality of lines; determining which one of the lines of the image block the pixel data corresponds to; referring to a lookup table (LUT) comprising an address for each line and an entry for each address, the entry including a plurality of luminance values of the light-emitting blocks; obtaining the luminance values of the light-emitting blocks by using the entry of the LUT corresponding to the determined one line; generating a plurality of histograms corresponding to the light-emitting blocks, each of the histograms indicating a frequency of each of the luminance values of a respective one of the light-emitting blocks; determining a plurality of target luminance values of the light-emitting blocks by using the histograms of the light-emitting blocks; and driving the light-emitting blocks by using the determined target luminance values.