Patent ID: 6437522
Filing Date: 2002-08-20
Classification: H04N

Abstract:
A method for controlling digital dynamic convergence, comprising:a first step of extracting a plurality of screen positions corresponding to the crossing points on the cross hatch pattern screen in a screen display area of a CRT picture device; a second step of mapping a data storing address provided for predetermined data storing means and the plurality of screen positions extracted in the first step; a third step of measuring a degree of convergence astigmatism on each screen position extracted in the first step; a fourth step of generating correction data with respect to the convergence astigmatism at each screen position measured in the third step; a fifth step of storing the misconvergence correction data at each screen position generated in the fourth step in the data storing address mapped in the fourth step; and a sixth step of individually correcting convergence astigmatism at each screen position in the scanning order of electron beams when the image is displayed by reference to the correction data stored in the predetermined data storing means in the fifth step.