Patent ID: 8884994

Claim:
A method of blending image data, comprising: in a display system having a display for displaying an image and a backlight for illuminating the display, the backlight having light emitters of multiple colors and the display having a plurality of pixels each having multiple sub-pixels, the emitters of the backlight positioned so that each of the pixels is illuminated by each of the colors, displaying a first portion of the image from a first set of the pixels according to a first mode in which color values of the sub-pixels of the first set of the pixels are determined according to time-averaged non-white colors of the corresponding backlight emitters; displaying a second portion of the image from a second set of the pixels according to a second mode in which color values of the sub-pixels of the second set of the pixels are determined independently for each of the colors of the corresponding backlight emitters; and at an interface between the first portion and the second portion, at least approximately linearly blending the first portion and the second portion so as to form a blended portion of the image, and displaying the blended portion; wherein the at least approximately linearly blending further comprises blending the first portion and the second portion according to a blending value α; and wherein color values are determined in the second mode at least partially according to coefficients of backlight color values P, the product of each coefficient and its respective backlight color value P being constant, and α is determined as a function of a difference between a maximum possible color value of the display and a maximum one of the coefficients, as well as a difference between a largest one of the color values of the image and the maximum one of the coefficients.