Design And Realization Of Digital Optical Terminal Based On CPLD

This task is designed to enhance the digital optical transmitter and receiver of Harbin Rock Optic-electronic Technique Co.LTD. This item is due to progress the disadvantage of the analog optical terminal, consummate the function of the digital optical terminal and prepare for the multi-digital optical terminal. It must accurately transmit one video signal, one audio signal and two data signals in one fiber and work well when the temperate has changed greatly.Due to its wide applying range, video surveillance has attracted attention for many years .Video surveillance has the characteristics of intuitionistic, convenient and abundant information, Go with the development of electronics and optical fiber communication technologies, and with the quantity of information transmitted becomes more and more large, the video surveillance system also evolution from single channel to mufti-channel.The techniques changes from analog to digital. The subject uses CPLD to achieve the synchronization of different signals, then design the transmission of the video signal,audio signal and data signal. Finish the design of the hardware and software.This systerm uses the optical mudule to connection the electrical signal and optical fiber. At last, we test the system, through test, we proved the exactness and feasibility of the system. It has a good application feature.