- -ADAPTED PRE-FILTERING FOR BIT-LINE REPEAT ALGORITHM

摘要

PURPOSE: A pre-filtering for plasma display panel signal is provided to reduces a lot the perceptive BLR-artefacts normally produced by the reduced available vertical resolution of standard BLR-algorithms. CONSTITUTION: Method for processing video pictures for display on a display device having a plurality of luminous elements, one or more of them corresponding to each of 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 which the luminous elements are activated for a light generation in small pulses corresponding to a sub-field code word(SFR, SFG, SFB) which is used for brightness control, wherein for corresponding pixels of a predetermined number of two or more pixel lines sub-field code words are determined which have identical entries for a number of sub-fields called common sub-fields, characterized by, before the step of sub-field encoding vertically filtering the picture divided into pixel blocks, each block including at least one pixel in horizontal direction and a number of pixels corresponding to the predetermined number of two or more pixel lines in vertical direction, wherein during vertical filtering the difference of brightness values within each pixel block is limited to a maximum allowed value.