多路HD-SDI高清视频复用及传输系统设计

【作者】 王学科；

【导师】 李兴明；

【作者基本信息】 电子科技大学 ， 通信与信息系统， 2010， 硕士

【摘要】 视频技术和光传输技术的不断进步推进人类文明进入了高清时代,并开始积极准备着迎接下一个全高清时代。高清视频的有效传输是整个发展过程中非常重要的环节,复用技术和光纤传输技术是视频传输中的关键技术。本文通过分析当前现有的技术条件和发展态势,给出了一种多路HD_SDI信号通过单根光纤复用传输的实现方案。首先,通过视频光端机的发展和变化分析了视频复用传输技术在未来的发展需求,论证了高清非压缩视频复用及其传输技术的研究价值。并就HD-SDI视频光端机的发展现状和技术水平做了介绍。其次,介绍了影响和制约高清视频复用和传输的主要技术,包括光收发模块、高速收发模块、FPGA芯片性能,以及相关的协议的关系和发展。并分析了这些技术的发展进步对视频传输领域的重要意义和如何更好的在视频传输中运用相关技术和产品。再次,讨论了HD-SDI多路复用及传输系统设计时应该包含的主要功能模块,以及各个模块的相关作用,并给出了框架结构图示。并对各个模块可选的实现方法和技术进行了分析对比,对各种技术的搭配使用和合理选择提出了一些看法。最后,给出了一种以高性能FPGA和光收发模块为核心,以资源的动态分配利用为主要特点的复用和解复用实现方案。详细讲述了方案中HD-SDI信号的接收发送、一种新颖的异步FIFO的设计方法、利用桶形移位方式进行BIT转换的设计方法、复用和解复用中同步的实现方式,以及通道动态分配和具有优先级的传输方法的实现等等,并就该方案有待于继续改进和发展的问题进行的分析。在本文的结尾对高清非压缩视频复用传输设备有价值的附加功能和可能的发展趋势进行了一些探讨。更多还原

【Abstract】 With the constant development of Video technology and optical transmission technology, human civilization has evolved into the High-Definition times and is positively getting ready for the Full-High-Definition era. It is important for this evolvement to implement efficient transmission of high-definition video in which multiplexing and fiber optic transmission technology is the key technology. A multiplexing transmission scheme that multi-HD_SDI is transmitted through a single fiber is introduced after analyzing the current technical conditions and development trends.First of all, based on the development and changes of the video Optical analysis, the video multiplexing transmission technology in the future development needs are analyzed and the non-compressed high-definition video multiplexing and transmission technology research value is demonstrated. And HD-SDI Video Transmission on the current development and technology are also introduced.Then, some key technologies is introduced including optical transceiver modules, high-speed transceiver modules, FPGA chip performance which influence and restrict the development of high-definition video multiplexing and transmission, as well as the related relations and development agreements. Moreover the development and progress of these technologies on the importance of the field of video transmission and how to use the relevant technologies and products better in video transmission in are analyzed.Again the main modules that should be included in the HD-SDI Multiplexer and transmission system design and their corresponding roles are discussed; meanwhile the frame icon is given. then several implement schemes and techniques are analyzed and compared, and some views on reasonable choice and arranging them into groups are put forward.Finally, a multiplexing and de-multiplexing scheme is brought out which takes the high performance FPGA and optical transceiver module as the core, the dynamic allocation and reuse of resources as the main features. Details about the program to receive HD-SDI signal and send, a novel design method of asynchronous FIFO, using barrel shift manner BIT design conversion, multiplexing reconciliation Reuse way to achieve synchronization, and channel dynamics distribution and transmission method with priority implementation, etc., and need to be on the program to continue to improve and develop the analysis of issues.At the end of the paper, the valuable additional function and possible trend of the multiplexing transmission equipment is discussed for uncompressed high definition video.更多还原