Patent ID: 7227561
Filing Date: 2007-06-05
Classification: G09G

Abstract:
1. Method of displaying a video image on a display device, comprising a plurality of elementary cells, during a display frame, the display frame of a video image being composed of a plurality of periods called subscans during which each elementary cell is either in the on state or in the off state, each subscan having a weight proportional to its illumination period, wherein each display frame is divided into first and second subframes during which each cell changes state at most once, in each subframe said first and second subframes comprising approximately the same number of subscans, the subscans of the first subframe being arranged in a decreasing order of their weight and the subscans of the second subframe being arranged in a increasing order of their weights, and in that, for at least one transition from a lower grey level to the next upper grey level, a subscan which is in the on state for the lower grey level is in the off state for the next upper grey level.