Patent ID: 6704008
Filing Date: 2004-03-09
Classification: G09G,H04N

Abstract:
A method of adjusting operation of an image display apparatus including: an image correction section configured to correct levels of given image data in accordance with correction data; a data storage device configured to store the correction data; and an image forming section provided with a plurality of pixels each emitting image-forming light responsive to corrected image data supplied from the image correction section, the image-forming light reproducing a displayed image, the method comprising:(a) providing input-output characteristic data of the image forming section; (b) supplying uniform image data representing a specific uniform image to the image display apparatus and measuring an output level of light at a plurality of locations on a displayed image; (c) determining data-correction values corresponding to the output levels of measured light, respectively, based on the input-output characteristic data of the image forming section, the data-correction values indicative of correction amounts of image data needed to bring each of the output levels of measured light to a predetermined reference level; (d) determining, based on the data-correction values corresponding to the output levels of measured light, the correction data which are to be used in reproducing the data-correction values with respect to the plurality of pixels of the image forming section; and (e) storing the correction data thus determined in the data storage device of the image display apparatus, wherein a data-correction value DD(P) for an arbitrary location P is determined by first calculating CRL(P)=RL(PR)+{RL(PR)âˆ’RL(P)}, wherein CRL(P) denotes a corrected output level of light at the location P that is to be obtained by the correction data, RL(PR) denotes the predetermined reference level, and RL(P) denotes an output level of light at the location P before the correction.