Patent ID: 8149195

Claim:
A method of driving a liquid crystal display device, comprising: extracting brightness components of a portion of the first data for a current frame; arranging the brightness components for the current frame into a brightness histogram; retrieving brightness histograms for at least two frames prior to the current frame to generate an average histogram; generating second data for the current frame based on the average histogram; comparing the histogram for the current frame with the average histogram to determine whether an image at the current frame is a moving image or a still image; and driving the liquid crystal display device in accordance with one of the first data and the second data based on the comparison result, wherein the step of generating the average histogram includes: storing the histograms for at least two frames that are immediately prior to the current frame; assigning weighting values to the stored histograms; and converting the histograms assigned with the weighting values into average values to produce the average histogram.