Patent ID: 7830358

Claim:
A method for displaying images at a viewing area, the method comprising: providing an array comprising a plurality of groups of individually-controllable light sources, the light sources of each group emitting light of a corresponding one of a plurality of colors; ranking the plurality of colors in order of importance wherein a first color is determined to be more important than other ones of the plurality of colors; establishing a first effective luminance pattern for a first one of the groups of light sources in the array corresponding to the first color, the first effective luminance pattern based on values specified in image data for the first color; determining first modulator values based upon the values specified in the image data for the first color and the first effective luminance pattern; establishing a second effective luminance pattern for a second one of the groups of light sources in the array corresponding to a second color, the second effective luminance pattern based on the first modulator values and values specified in the image data for the second color; driving the first group of light sources with a first light-source-driving signal such that the first group of light sources projects the first effective luminance pattern onto an active area of a modulator comprising a plurality of pixels, and driving the second group of light sources with a second light-source-driving signal such that the second group of pixels projects the second effective luminance pattern onto the active area of the modulator; and, controlling the pixels of the modulator to selectively allow light from the active area to pass to the viewing area based on the first modulator values.