Design And Application Of One-way High-speed Data Transmission System

According to the provisions of the State Secrecy Bureau, Secrete units have to distinguish the computers concerned secret from the ones which not. Generally, there are two sets of network equipment in secrete units. One set connects to intranet, while the other one connects to the Internet. Intranet must be physically isolated from the Internet. Though the provision above takes a very important role in the prevention of disclosing secrets, it brings along lots of problems, like decreasing work efficiency and arising office cost. Therefore, it is meaningful to design and implement a one-way high-speed reliable data transmission system in secure communication.With the demand of secrete units, the dissertation brings up an unidirectional communication method based on optical theory. The one-way high-speed reliable data transmission system contains three parts:internal card, external card and unidirectional transmission card. Firstly, the dissertation introduces background, basic research concept, status quo and significance of research. Secondly, the dissertation proposes frame of overall design, analyses guarantees for the one-way, high-speed and reliability. Thirdly, the dissertation introduces the details of the hardware and software design. Fourthly, it presents some specific applications of this system, and results of test of the system. Finally, it summarizes the work of the dissertation and prospects future work.Tests on Dell Power Edge R310servers show that system can reach a reliable speed of750Mbps while transferring data in RAM and reach a speed of200Mbps while transferring files in hard disks. The one-way high-speed transmission system can transfer rapidly, remotely, stably, expediently.