Patent ID: 6266035
Filing Date: 2001-07-24
Classification: G09G

Abstract:
A display system for displaying information as a succession of video frames, comprising:a display comprising a plurality of pixels, each pixel exhibiting one of a plurality of brightnesses when activated by applying a respective one of a corresponding plurality of different voltages thereto, where one of the voltages is zero and where a pixel to which the zero voltage is applied exhibits zero brightness; anda controller for controlling an apparent brightness of each pixel over a video frame by dividing the video frame into a plural total number of cycles of equal duration and applying, to the pixel, a selected one of the voltages during each of the cycles,wherein a number of cycles in the video frame in which a non-zero voltage is applied to the pixel constitutes a refresh rate for the pixel for the video frame,wherein the refresh rate is selected to be a number from zero to the total number of cycles,wherein each non-zero voltage applied to the pixel during the video frame has a polarity opposite to a polarity of a just preceding non-zero voltage applied to the pixel during the video frame, andwherein the apparent brightness of the pixel over the video frame is determined by the selected refresh rate and the selected voltage applied in each cycle in accordance with the information of the video frame.