Patent ID: 9485501
Filing Date: 2016-11-01
CPC Classification: G09G,H04N

Claim Text:
1. A method for evaluating image retention of a display device comprising: instructing the display device to output a test pattern having at least one dark feature and at least one light feature; instructing the display device to stop outputting the test pattern and to instead output an analysis pattern having at least one gradient feature comprising a plurality of regions of different levels and an intermediate brightness feature; comparing the intermediate brightness feature and the gradient feature to determine a location of the gradient feature at which a difference in brightness between the intermediate brightness feature and the gradient feature is minimized; determining the image retention of the display device based on the determined location of the gradient feature at which the difference in brightness between the intermediate brightness feature and the gradient feature is minimized; and outputting the determined image retention; wherein the intermediate brightness feature includes at least one of: wherein at least one of the at least one gradient feature is near a location of the display formerly showing a dark feature; and wherein at least one of the at least one gradient feature is near a location of the display formerly showing a light feature.