METHOD AND DEVICE FOR ENCODING LUMINANCE VALUES INTO SUBFIELD CODE WORDS IN DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for encoding a luminance value of a pixel of a picture into a subfield code word in a display device. SOLUTION: This invention can be applied to every display device using a PWM (Pulse Width Modulation) technology and subfields for displaying a video picture. This invention can be used to compensate for any luminance problem that can be estimated. The general idea of the recursive coding is to encode one sub-field after the other in order to be able to compensate for problems occurring on one sub-field with the other sub-fields. More particularly, the bits of the subfield code word are computed recursively one after the other such that the defects (e.g. line load and/or linearity) in the light emission or luminance generated by a bit of the subfield code word can be compensated by the following bits of the subfield code word. COPYRIGHT: (C)2007,JPO&INPIT