Patent ID: 8982038
Filing Date: 2015-03-17
Classification: G09G

Abstract:
1. A display system comprising: a display panel configured to display image data; a backlight configured to illuminate the display panel, the backlight including one or more light emitting zones, each light emitting zone being configured to emit light in response to a backlight drive value which controls an amount of light emitted from that light emitting zone; a backlight selection module configured to select the backlight drive value for each light emitting zone from the image data of an nth frame of image data, where n is a natural number; an effective backlight module which generates effective backlight signals of the nth frame of image data using light spread information for the backlight and the backlight drive values, wherein the light spread information includes information representing the combined contribution of light spread from each individual light emitting zone, wherein the light spread by each individual light zone is the amount of light provided by the individual light zone over the display panel; and a module configured to modulate the image data of an (n +1)th frame of image data based on the effective backlight signal of the nth frame of image data and providing the display panel with the modulated image data, wherein the effective backlight module is configured to generate a table of effective backlight signals of the nth frame of image data having a lower resolution than the image data and includes an interpolation block configured to interpolate the low resolution table of effective backlight signals to produce the effective backlight signal of the nth frame of image data for each pixel of image data, and provide the effective backlight signals of the nth frame of image data for each pixel of image data for corresponding pixels of image data in the (n +1)th frame of image data to the module as the module receives the pixels of image data of an (n +1)th frame of image data, wherein the effective backlight module comprises a dual-ported memory configured to interpolate the low resolution table of effective backlight signals by performing in parallel with modifying an image data for an (n +1)th frame.