DRIVING CIRCUIT OF DISPLAY DEVICE

摘要

PURPOSE:To solve a problem of generation of pseudo patterns by making selection as to error diffusion processing by personal computer video signals and general video signals. CONSTITUTION:This driving circuit includes a changeover means for the direct input of the personal computer video signals to a display panel 10 and the input of the general video signals via an error diffusion processing circuit 71. The error diffusion signals are selected and the images with which the pseudo contours are not recognized are obtd. on the display panel 10 in the case of the general video signals. A longer sustaining period is taken by using the data of a 4-bit memory 76 for general videos and the videos of the high luminance and high contrast are obtd. The signals free from error diffusion are selected and the data of a 6-bit memory 75 for personal computer videos are used, by which necessary gradations are obtd. and the images free from the pseudo contours are obtd. in the case of the personal computer video signals.