摘要： 在实际的工程应用中要将不同性质的数字视频信号分时复用，通过单根光纤将各种信号从光电跟踪设备旋转的机上探测机构传输到机下数据处理单元，而数据的并发性和数据位宽的不同会造成数据传输不连续、带宽资源浪费等问题。针对上述问题，提出恢复视频信息中行场信号的方案，给出系统物理层协议的实现，结合物理层编解码芯片的特点，采用恢复系统中时钟信号以及8 B/10 B编解码方法，使系统传输速率提高到2.0 Gb/s，误码率小于10-12。实验结果证明，该方法可以有效解决传输总线不匹配问题，使所有数据并行传输。

关键词: 视频数据, 物理层, 光纤

Abstract: In view of the disadvantages that the coming parallel data and no-matching data width induce incontinuous transmission and transmission channel waste when the different property data are transmitted from the top inspector at high-speed opto-electronic theodolite by one single fiber with TDM to the process parts at bottom in practice, this paper puts forward a method of recovering line and field signals of video data, including physical layer protocol implementation of this system. Based on the characteristic of the encode & decode chips, it uses the way of recovery time signal and 8 B/10 B encode& decode method to make the data rate reach 2.0 Gb/s, and make BER less than 10-12. Experimental result shows that it can solve no-matching data width problem, and realize parallel transmission for all data.

Key words: video data, physical layer, fiber-optic

中图分类号: 

• TP302.1