Patent ID: 7023450

Claim:
Method for processing video pictures for display on a display device having a plurality of luminous elements corresponding to the pixels of a picture, wherein the time duration of a video frame or video field is divided into a plurality of sub-fields during the luminous elements can be activated for light emission in small pulses corresponding to a sub-field code word which is used for brightness control, wherein to each sub-field a specific sub-field weight is assigned, wherein the video signals for the pixels of a picture are sampled, said video signal samples are represented by video data words having N bits, wherein to the video data words sub-field code words are assigned having N+X bits, N and X being integer numbers, wherein with motion estimation motion vectors are calculated for pixels in a video picture, and these motion vectors are used to determine corrected sub-field code words for pixels, wherein, a motion vector calculation is being made separately for one or more colour components of a pixel, wherein for the motion vector calculation the sub-field code words having N+X bits are used as data input instead of the video data words having N bits for a colour component, and wherein the motion vector calculation is done based on the complete sub-field code words or based on code words that are formed from the entries in the sub-field code words of only a sub-group of sub-fields from the plurality of sub-fields and the motion vector defines a trajectory along which corrected sub-field code words will be placed.