Patent ID: 6304300
Filing Date: 2001-10-16
Classification: G09G,H04N

Abstract:
In a display system, a method for performing gamma correction on a set of pixel data based on a gamma correction curve table having a specified total number of intensity levels associated with gamma corrected pixel values, one intensity level per pixel value, the method comprising:partitioning the gamma correction curve table into N segments such that each of the N segments is associated with a set of intensity levels from the specified total number of intensity levels;selecting a plurality of intensity levels for each of the N segments such that significant banding effects are not visible to the human eye between an adjacent pair of the selected intensity levels;storing the gamma corrected pixel values for each of the N segments such that each of the plurality of selected intensity levels functions as an index to the associated gamma corrected pixel values; andperforming gamma correction on the set of pixel data by accessing a stored pixel value in one of the N segments in response to the pixel data to generate gamma corrected pixel data.