Patent ID: 7847782
Filing Date: 2010-12-07
Classification: G09G

Abstract:
1. A method of driving a display, the method comprising: (A) converting first data of a current frame into brightness components and chrominance components; (B) arranging the brightness components into a histogram; (C) storing histograms of the brightness components of a plurality of frames, wherein storing the histograms comprises storing histograms of at least two frames adjacent to the current frame; (D) generating an average histogram from the stored histograms, wherein generating the average histogram comprises assigning weighting values to the stored histograms having values that decrease as the frames from which the stored histograms are generated increase in distance from the current frame; (E) converting brightness components of the average histogram to have an expanded contrast; (F) generating second data having an expanded contrast from that of the first data using the converted brightness components and the chrominance components; and (G) re-arranging the second data such that the second data can be applied to a liquid crystal display panel, thereby applying the re-arranged second data to a data driver; (H) controlling brightness of a back light using the stored histograms, wherein controlling the brightness of the back light comprises extracting a control value from the average histogram, and controlling the brightness of the back light in correspondence with the control value; wherein the back light applies light to the liquid crystal display panel; wherein the control value is a most-frequent value occupied by the maximum number of brightness components in the average histogram.