Patent ID: 8254466
Filing Date: 2012-08-28
Classification: G09G,H04N

Abstract:
1. Method for processing video data for display on a display device having a plurality of luminous elements corresponding to the pixels of a picture, wherein a time of a video frame or field is divided into a plurality of sub-fields during which the luminous elements can be activated for light emission in small pulses corresponding to a sub-field code word of n bits used for en-coding the p possible video levels lighting a pixel, comprising the steps of: encoding a first part of the picture using a first encoding method, wherein among the set of possible video levels for lighting a pixel, a sub-set of m video levels with n<m<p is selected, which is used for light generation, said m values being selected according to the rule that the temporal centre of gravity for the light generation of the corresponding sub-field code words grows continuously with the video level, selecting said first part of the picture on the basis of predetermined criteria including an area having a predetermined skin colour, determined by the phase angle and amplitude of a colour space diagram, or a grey tone, and encoding at least one second part different from said first part of the picture using a second encoding method different from said first encoding method.