Abstract: In a scanned multiple image display device a plurality of individual projectors produces a single composite image by optically combining individual projector outputs. The individual images must be converged with each other to produce an acceptable display. A digital computer is used to generate and store words that correspond to the required convergence correction for individual projectors. The stored words are read out of the computer in accordance with projector scanning timing and, after being converted to analog form, are used to correct the scanning to produce convergence.