Patent ID: 8675030

Claim:
Method for displaying a video image on a digital display device during a video frame, wherein the displaying of a video image is carried out by the sequential displaying of three images of red, green and blue color, respectively, the video frame comprising at least two non-consecutive time segments for each color, said digital display device comprising a plurality of cells, each cell being able to take selectively an on state or an off state, each cell being able moreover to change state several times during a video frame, each time segment comprising a plurality of consecutive subperiods, called subfields, of different durations and during each subfield each cell is either in an on state or in an off state, where the method comprises the steps of: coding grey levels of said video image where each cell changes state at most once during each time segment of the video frame for displaying said grey levels of the video image, and for all pairs of successive grey levels having a grey level above a threshold level, a difference in the duration of the on state of cells displaying two successive grey levels being associated with a single time segment of said at least two time segments, common part in the duration of the on state of said cells displaying said two successive grey levels being associated with same subfields for both successive grey levels, said threshold level corresponding to a grey level close to zero grey level, and displaying the grey levels of said video image.