GRID-CORRECTION DEVICE FOR TELEVISION SETS

摘要

To verify and correct deflection parameters, in particular convergence, a grid pattern is formed on the picture area (11). The points of intersection of the grid pattern are marked with a cursor (C) in order to verify the parameter and determine the correction values. The aim is to improve the sharpness of the cursor (C) for grid correction. The brightness of the cursor (C) is less than that of the stripes of the grid pattern (SH, SV). Application in particular to the correction of convergence in a projection television set with a large projection area.