Patent ID: 7142185
Filing Date: 2006-11-28
Classification: G09G

Abstract:
1. An image data compensation method to convert image data, indicating gray levels of pixels aligned in a matrix in an X direction and a Y direction, into analog data and to compensate the image data when a voltage signal is supplied to each of the pixels, a polarity of the voltage signal being inverted based on a predetermined constant potential every predetermined period, comprising the steps of: storing reference compensation data corresponding to specific levels among levels available to the image data for each pair of reference coordinates preset in a display region in which the pixels are aligned; interpolating the stored reference compensation data in the level directions to generate first compensation data corresponding to the levels available to the image data for the each pair of reference coordinates and storing the first compensation data in association with the each pair of reference coordinates and the levels; selectively reading, from the stored first compensation data, pieces of data which correspond to pairs of reference coordinates positioned near the coordinates of the pixel corresponding to the image data and which correspond to the level of the image data; interpolating the read first compensation data in the coordinate directions to generate second compensation data which corresponds to the image data; and adding the second compensation data to the image data in a case in which the voltage signal is positive, the second compensation data being performed for a case in which the voltage signal is positive with respect to the constant potential, whereby the image data is compensated.