Patent ID: 7456804

Claim:
A display control apparatus having a display unit which displays an image simultaneously on each of a plurality of display devices with identical image size in accordance with an identical display synchronizing signal, and in which a local memory, which stores video data for a plurality of systems being displayed on the plurality of display devices, and the display unit are connected through an internal bus, wherein the display unit comprises: a synchronizing signal generating section which generates the display synchronizing signal; a bus access control section which reads out the video data for a plurality of systems, one system at a time by line from the local memory; a screen combining section which processes to combine the video data which was read out, and video data for use in combining, by line sequentially; a line buffer section which stores video data which was processed to combine, and the video data for use in combining by line, respectively; and a display interface section which reads out, by line, video data that the line buffer section stores, in accordance with the display synchronizing signal, and outputs the video data simultaneously to the plurality of display devices, respectively.