Patent ID: 8330870

Claim:
A method for improving image contrast for a display apparatus comprising: obtaining a frame of image data said image data comprising one or more code values for each pixel in the frame of image data; analyzing the frame of image data to identify a distribution of dark regions therein; adjusting at least one of the one or more code values for the frame of image data according to the distribution of dark regions in the frame of image data; attenuating a brightness level available for the image frame according to the distribution of dark regions in the frame of image data; and wherein the frame of image data includes a first portion and a second portion of image data from the frame and analyzing a distribution of dark regions within the first and second portions, adjusting at least one code value for each of the first and second portions, attenuating the brightness level of each of the first and second portions, and displaying the first and second portions of image data, wherein a brightness level attenuation for the second portion differs from the brightness level available for the first portion.