Display control apparatus

Claim 1

A display system, comprising: an image data generator for generating image data; a single display control means for controlling the image data generated by said generator; and a plurality of display devices each having a memory function and each outputting to said display control means a horizontal synchronizing signal using, as a synchronizing signal for image data transferring, a horizontal display timing according to a temperature change therein, with the horizontal synchronizing signal having a horizontal scan period that changes according to the temperature change, wherein the horizontal synchronizing signal of a maximum period is selected from the horizontal synchronizing signals outputted from said plurality of display devices to said single display control means, the image data transferring is performed according to the horizontal synchronizing signal of the maximum period, and the display device generating the horizontal synchronizing signal of a shorter period than the maximum period is driven in a manner that output voltages to a common driver and a segment driver are made at the same voltage, thereby performing display on said plurality of display devices based on the same image data simultaneously.