Patent ID: 8319721
Filing Date: 2012-11-27
Classification: G09G

Abstract:
1. A method of controlling a display device, the display device comprising an illumination source and a display modulator modulating light provided by the illumination source, the method comprising: using a light sensor arrangement in the display device to generate a first signal based on an ambient light level with a first illumination source drive condition, wherein the step of generating the first signal comprises: using the light sensor arrangement in the display device to generate a second signal based on the same ambient light level but with a second illumination source drive condition, wherein the second illumination source drive condition is different to the first illumination source drive condition, and wherein the second illumination source drive condition and the first illumination source drive condition are implemented at different times, wherein the step of generating the second signal comprises: processing the first and second signals to generate a first correction parameter and correcting the first signal using the first correction parameter to generate a corrected signal; and controlling the display device based on the corrected signal.