APPARATUS AND METHOD FOR IMAGE RENDERING BASED ON WHITE POINT CORRECTION
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United States of America Patent
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Issued Date -
Dec 1, 2016
app pub date -
May 29, 2015
filing date -
May 29, 2015
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Abstract
Systems, methods and apparatus, including computer programs encoded on computer storage media, of this disclosure allow for forming an image frame on a display device. In one aspect, a controller associated with a display device can be configured to correct for output white point shift due to variation, across separate color subfields of an image frame, in the respective number of subframes or the respective subframe weights. The controller can determine aggregate subframe weights for at least two color subfields and adjust at least one display parameter based on the determined aggregate subframe weights, to shift the output white point towards a white point of a target color gamut. The display parameter(s) can include a duty cycle of a color subfield, tristimulus coordinates of light used to illuminate a color subfield or gamut mapping function. The controller can display the image frame according to the adjusted display parameter(s).
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