摘要
在不同安全域之间传输文件,只能是低保密级别安全域的文件向高保密级别安全域传输。介绍了基于USB2.0总线的单向数据传输系统的实现原理及技术,系统地阐述了如何采用USB2.0集成芯片CY7C68013与光耦、双口RAM结合来实现计算机单向数据传输的方案。通过实验验证该系统利用USB2.0接口、双口RAM数据缓冲及光耦隔离技术实现了快速、单向、可靠的数据传输。
When transferring files between the different security domain, files are required to be only transferred from low security domain to high security domain. An unilateral transferring system was developed based on USB2.0 bus. Its data transmission scheme by combining USB2.0 interface device CY7C68013 and DAUL-PORT RAM was described. Experiment results verify that the system based on USB2.0 interface, DAUL-PORT RAM data buffer and technology of optical couplers insulation realizes high-speed, unilateral and reliable data transmission.
出处
《计算机应用》
CSCD
北大核心
2006年第6期1490-1491,1495,共3页
journal of Computer Applications
