Patent ID: 7256794
Filing Date: 2007-08-14
Classification: G09G

Abstract:
1. A method of processing video data of a display device, comprising: (a) comparing data of an ith frame (“i” is a natural number) and data of a (i+1)th frame to determine whether the data of the (i+1)th frame is a motion picture or a still image; and (b) employing a different dithering method to display the video data on the display device depending upon the determination result of the motion picture or the still image, wherein, in the dithering method, dithering is performed by selecting one of a plurality of dither mask patterns, which are disposed in the form of j (“j” is a natural number; horizontal)×j (vertical), based on gray scale values of input data and a vertical sync signal, and by extracting a specific dither value from the selected dither mask pattern based on a horizontal sync signal and a pixel clock, and wherein if it is determined that the data of the (i+1)th frame is a motion picture, dithering is performed using one or more j×j−1 dither mask patterns in which one vertical line is removed from the j×j dither mask patterns when a first dither mask pattern is applied in the (i+1)th frame.