SYNCHRONOUS SIGNAL POLARITY CONVERTER OF VIDEO CARD

摘要

A synchronous signal polarity converter of a video card comprises a data output circuit including a graphic processor and a buffer, a driving control circuit, and a synchronous signal output circuit, wherein the polarity control data can be changed as desired and the desired polarity of the synchronous signals can be provided by combining the polarity-control data in a data storage circuit with the synchronous signals of graphic processor.