一种SDI光端机的设计与实现
首发时间:2011-11-21
摘要:设计了一种符合SMPTE系列标准、支持270Mpbs至3Gbps信号速率的SDI数字视频光端机。详细介绍了其功能结构,发射端将本地SDI电信号经过均衡和时钟恢复处理后,转换成光信号发射出去;接收端将接收到的光信号首先转化成电信号,再经过时钟恢复和线缆驱动处理由本接口本地输出。SDI信号的处理部分和光电转换部分均兼容270Mbps至3Gbps的SDI信号。实验测试了各速率下的SDI信号,结果表明,SDI数字视频信号处理和传输工作稳定可靠。
关键词: 光端机 SDI SMPTE 数字视频 均衡 时钟恢复
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Design and realization of a SDI optical transceiver
Abstract:This paper designed a SDI digital video transceiver, which can support SMPTE standards and operate over a wide range of data rates from 270Mbps to 3Gbps, and gave detailed introduction of the circuit. The transmitter equalized and relocked the local input SDI signal before converting it to optical signal. The receiver converted the received optical signal to electric signal, which then was relocked and driven to BNC interface. The chips and modules which are used in the system all support a wide range of signal rates from 270Mbps to 3Gbps. Experimental results show that the processing and transport of SDI signal is stabilization and reliable.
Keywords: Optical transceiver SDI SMPTE digital video equalize reclock
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