Display control system

摘要

A display control method of adjusting the position of an image to be displayed is disclosed. The method includes the steps of generating a composite video signal by combining a video signal obtained during a display period of a vertical synchronizing signal with a display position signal obtained during a blanking period of the vertical synchronizing signal; separating the composite video signal into a reproduced video signal and a reproduced display position signal in accordance with the display period and the blanking period of the vertical synchronizing signal; detecting a difference in phase between the reproduced display position signal and a horizontal synchronizing signal; generating a timing adjusting signal for the horizontal synchronizing signal in accordance with the detected phase difference; and adjusting the position of the image to be displayed in accordance with the timing adjusting signal.