Patent ID: 8035661
Filing Date: 2011-10-11
Classification: G06T,G09G

Abstract:
1. A driving apparatus of a display device, the driving apparatus comprising: a gray range calculation unit which calculates a minimum gray and a maximum gray of a current image signal, which is an image signal of a current frame, or a signal that filters the current image signal with a low band; a conversion variable calculation unit which calculates a conversion variable based on the minimum gray, the maximum gray, a gray average of a current image signal, and a gray average of a previous image signal, which is an image signal of a previous frame; and an output signal generator which generates an output image signal by converting the current image signal according to the conversion variable, wherein conversion is linear conversion that uses the conversion variable as a slope, and wherein the slope Sc is given by where AGc is a gray average of a current frame, AGp is a gray average of a previous frame, Gmax is a maximum gray that can be displayed, Sp is a slope of the previous frame, Max is a gray maximum value of the current frame, and Min is a gray minimum value of the current frame.