Patent ID: 8570349
Filing Date: 2013-10-29
Classification: G09G

Abstract:
1. A method for dividing a display area for local dimming, comprising: determining an initial number of pixels per data analysis area and a total number of residual pixels using a resolution of the display area and a total number of data analysis areas equal to a total number of local dimming areas of a backlight unit; calculating a first residual pixel sum of a current data analysis area by adding the total number of residual pixels to a second residual pixel sum of a previous data analysis area, each time a data analysis area index increases; comparing the first residual pixel sum of the current data analysis area with the total number of data analysis areas and determining whether to assign a residual pixel to the current data analysis area according to a result of the comparison; calculating a second residual sum of the current data analysis area by subtracting the total number of data analysis areas from the first residual pixel sum of the current data analysis area and outputting the second residual sum of the current data analysis area as the second residual sum of the previous data analysis area for a next data analysis area, if a residual pixel is assigned to the current data analysis area; setting the first residual sum of the current data analysis area as the second residual sum of the current data analysis area and outputting the second residual sum of the current data analysis area as the second residual sum of the previous data analysis area for the next data analysis area, if a residual pixel is not assigned to the current data analysis area; and repeating the calculation of a first residual pixel sum of a current data analysis area, the determination as to whether to assign a residual pixel to the current data analysis area, and the outputting of a second residual pixel sum of the current data analysis area, until the data analysis area index is a last data analysis area index, wherein the determination of an initial number of pixels per data analysis area and a total number of residual pixels comprises: determining an integer obtained by diving the resolution by the total number of data analysis areas as the initial number of pixels per data analysis area; and determining the total number of residual pixels by calculating “the resolution-(the initial number of pixels per data analysis area)×(the total number of data analysis areas)”.