Patent ID: 8890795
Filing Date: 2014-11-18
Classification: G09G

Abstract:
1. A method for controlling a display to display an image specified by image data, the display comprising 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 and a modulator located to be illuminated by light from the array, the method comprising: based on the image data selecting a first one of the colors and determining selected color light source control signals for the individually-controllable light sources of the selected color; determining first pixel driving values for pixels of the modulator based on a component of the image data corresponding to the selected color; determining other color light source control signals for controlling intensities of light emitted from the individually-controllable light sources of one or more non-selected colors of the plurality of colors other than the selected color from the determined first pixel driving values and components of the image data corresponding to the one or more non-selected colors; and for at least a first time interval applying the determined first pixel driving values to drive the pixels of the modulator to selectively allow light from an active area of the modulator to pass to a viewing area and applying the determined selected color light source control signals and the determined other color light source control signals to drive the individually-controllable light sources such that the group corresponding to the selected color and the group or groups corresponding to the one or more non-selected colors each projects a different luminance pattern onto the active area of the modulator.