Hardware Design And Test For Video Information Leakage Preventing System Based On DVI

The research background and current situation of video information leakage prevention are described in this paper. And the hardware solution of video information leakage prevention based on DVI—adding a video information processing card on a common PC is given. Considering the system needs and high-speed characteristics of the card, the hardware scheme is obtained. Then the device type selection of each module in the scheme and corresponding peripheral circuit designing of the device have been done in consider of felicity, expansion and blocking. In this way, the whole processing-card's schematic design is finished. Before the PCB's layout, the key points of the high-speed PCB design are discussed. Basing on these points, by dint of the EDA simulation software, the card's PCB design is completed. At last, the test of SI,PI and function are given, verifying the correctness and reliability of the processing-card's design.