Patent ID: 7602359
Filing Date: 2009-10-13
Classification: G09G

Abstract:
1. An image signal correcting method for use with an electro-optical panel that includes a plurality of scanning lines; a plurality of data lines; and pixels which are provided corresponding to intersections of the plurality of scanning lines and the plurality of data lines and to which the image signals are supplied through the data lines, the electro-optical panel being driven such that, in a period of time when the scanning lines are selected, blocks, each of which are composed of predetermined data lines, are sequentially selected, the image signal correcting method, comprising: calculating variations between grayscales of the image signals respectively supplied to the predetermined data lines belonging to a first block and grayscales of the image signals respectively supplied to the predetermined data lines belonging to a second block selected in a position one block ahead of the first block; calculating an average value of the variations, which is a first average value; calculating variations between grayscales of the image signals respectively supplied to the predetermined data lines belonging to a third block selected in a position two blocks ahead of the first block and grayscales of the image signals respectively supplied to the predetermined data lines belonging to the second block; calculating an average value of the variations, which is a second average value; calculating correction data based on the first and second average values; and correcting the image signals respectively supplied to the data lines belonging to the first selected block using the correction data.