Patent ID: 8674925
Filing Date: 2014-03-18
Classification: G09G

Abstract:
1. A display apparatus having a backlight illuminator, comprising: a parameter generator which generates parameters indicative of motion features of a video signal; and a backlight driver which drives the backlight illuminator by generating a scanning signal which has a plurality of scanning pulses during a frame period and is adjusted according to the parameters generated by the parameter generator, wherein the backlight driver drives the backlight illuminator by generating the scanning signal which has a first scanning pulse and a second scanning pulse during the frame period, wherein the backlight driver drives the backlight illuminator by adjusting a start point or a pulse width of the second scanning pulse differently for each frame, and wherein an initial scanning pulse of the generated scanning signal is synchronized with a vertical synchronization signal so that the start point of the initial scanning pulse is consistent for each frame, wherein the backlight driver drives the backlight illuminator by adjusting the scanning signal to decrease the pulse width of the first scanning pulse and to increase the pulse width of the second scanning pulse while maintaining a total duty ratio constantly when the parameters indicate no motion, and wherein a start point of the second scanning pulse is not adjusted according to the parameters while the pulse width of the second scanning pulse is increased when the parameters indicate no motion.