Patent ID: 6025818
Filing Date: 2000-02-15
Classification: G09G

Abstract:
A method for correcting pixel data in a self-luminous display panel driving system, wherein one field of a video signal is divided into N sub-fields, luminance of each pixel is set by a pixel data comprising N bits corresponding to the number of the sub-field and each of digit positions of the N bits represents a weight for logical value of the luminance, the method comprises the steps of:comparing a present data of a pixel with a prior pixel data of a same pixel;detecting that the digit position of a bit of the heaviest weight in the N bits of the present pixel data changes from the digit position of that of the prior pixel data, and producing an inter-frame change signal based upon a detected change;comparing a present pixel data with pixel data of surrounding pixels;comparing a present pixel data of a pixel with a prior pixel data of adjacent pixels;detecting that the digit position of a bit of the heaviest weight in the N bits of at least one pixel data changes from the digit position of that of the present pixel data, and producing an in-space change signal based upon a detected change;detecting a pixel to be corrected based upon the inter-frame change signal and the in-space change signal; andcorrecting the pixel data of the pixel to be corrected based upon the inter-frame change signal and the in-space change signal so as to change the sub-field of the corrected pixel data.