IP网络中数字视频终端系统的设计与实现
摘要
近年来，以MPEG压缩编码为主流的图像视频技术的日渐成熟和IP网络技术的进步，为多媒体通信的发展奠定了良好基础，基于IP网络的视频传输和视频应用业务成为研究的热点。
本文论述IP网络中数字视频终端系统的设计与实现，主要包括硬件、软件的总体设计方案和节目播放软件的设计与实现。另外，本文提出了一种自适应缓冲控制算法，有效地提高了视频播放的质量。
全文共分五章。第一章介绍IP网络上的视频应用现状和技术发展趋势及IP网络中数字视频终端的关键技术。第二章介绍数字视频终端系统的总体设计。第三章是本文的重点，描述了数字视频终端中节目播放软件的框架结构及节目播放模块、频道列表接收模块、菜单框架模块和自适应缓冲控制算法的设计和实现。第四章给出了视频终端的调试和测试方案。第五章描述了视频终端在数字电视和小区VOD点播演示系统中的应用。最后一章进行总结，并指出了视频终端的技术改进和应用方向。
In recent years,with the maturing of the video process technology basing on MPEG coding standards and the progress of the IP network,multimedia communication has been developed rapidly. Video data transmission and video application have become research focus.
This paper discusses the design and implementation of digital video terminal on IP network,which mainly introduces the whole design of the hardware and software,and also explicates the function and key technologies of the program play software.Furthermore,to ensure the QoS of the real-time video play,this paper also presents an adaptive buffer control algorithm.
This thesis consists of six chapters.The first chapter introduces current status and tendency of the video applications and point out the critical technologies in our terminal.The second chapter introduces the whole design of the video terminal.Then the main chapter comes,which describes the frame of program play software,including play model,channel list receiving model,menu system model and the adaptive buffer control algorithm.The fourth chapter presents the debug strategy and test methods of the system.The next chapter just introduces the application of the video terminal in digital TV and VOD demo system.The last chapter is a general statement of the system and future work.
本文论述IP网络中数字视频终端系统的设计与实现，主要包括硬件、软件的总体设计方案和节目播放软件的设计与实现。另外，本文提出了一种自适应缓冲控制算法，有效地提高了视频播放的质量。
全文共分五章。第一章介绍IP网络上的视频应用现状和技术发展趋势及IP网络中数字视频终端的关键技术。第二章介绍数字视频终端系统的总体设计。第三章是本文的重点，描述了数字视频终端中节目播放软件的框架结构及节目播放模块、频道列表接收模块、菜单框架模块和自适应缓冲控制算法的设计和实现。第四章给出了视频终端的调试和测试方案。第五章描述了视频终端在数字电视和小区VOD点播演示系统中的应用。最后一章进行总结，并指出了视频终端的技术改进和应用方向。
In recent years,with the maturing of the video process technology basing on MPEG coding standards and the progress of the IP network,multimedia communication has been developed rapidly. Video data transmission and video application have become research focus.
This paper discusses the design and implementation of digital video terminal on IP network,which mainly introduces the whole design of the hardware and software,and also explicates the function and key technologies of the program play software.Furthermore,to ensure the QoS of the real-time video play,this paper also presents an adaptive buffer control algorithm.
This thesis consists of six chapters.The first chapter introduces current status and tendency of the video applications and point out the critical technologies in our terminal.The second chapter introduces the whole design of the video terminal.Then the main chapter comes,which describes the frame of program play software,including play model,channel list receiving model,menu system model and the adaptive buffer control algorithm.The fourth chapter presents the debug strategy and test methods of the system.The next chapter just introduces the application of the video terminal in digital TV and VOD demo system.The last chapter is a general statement of the system and future work.
引文
[1] ISO/IEC 13818-1:2000 Information technology--Generic coding of moving pictures and associated audio information: Systems
[2] J.Dunlop, G.Le Bodic, J.Lrvine and D.Girma. Qos management with dynamic bearer selection schemes. Commputer Networks, 2001, 37
[3] Edward Y.Chang. Maximizing Qos for interactive DTVclients. Computer ommunications, 2000, 23
[4] Sang, Aimin. Measurement-based traffic management for QoS guarantee in multi-service networks. UMI, 2002
[5] Zhu, Kai. Statistical delay bounds oriented packet scheduling algorithms in high speed networks. UMI, 2002
[6] Marco Ajmone Marsan, Andrea Bianco. Quality of service in multiservice IP networks, international workshop, QoS-IP 2001, Rome, Italy, January 2001
[7] Huston, Geoff. Internet performance survival guide: QoS strategies for multi-service networks.
[8] Jones, M. Tim. TCP\IP application layer protocols for embedded systems/M.Tim Jones. Charles River Media, c2002
[9] Berlin; New York: Springer, c2001
[10] 郭乐深，刘锦德，杨涛等。通过有效的端系统动态资源管理实现Qos控制。通信学报 2001，22
[11] 赵键，吴介一。一类基于主动网络的网络拥塞控制策略。通信学报，2000，21
[12] 面向广播行业和后期制作工程师MPEG-2基本问题-视频和网络部分白皮书．http://www。videocn.com/
[13] 程冬超 巍骛 张焕强。家庭网关硬件设计文档
[14] 程冬超 张焕强。家庭网关系统(HGS100)设计方案
[2] J.Dunlop, G.Le Bodic, J.Lrvine and D.Girma. Qos management with dynamic bearer selection schemes. Commputer Networks, 2001, 37
[3] Edward Y.Chang. Maximizing Qos for interactive DTVclients. Computer ommunications, 2000, 23
[4] Sang, Aimin. Measurement-based traffic management for QoS guarantee in multi-service networks. UMI, 2002
[5] Zhu, Kai. Statistical delay bounds oriented packet scheduling algorithms in high speed networks. UMI, 2002
[6] Marco Ajmone Marsan, Andrea Bianco. Quality of service in multiservice IP networks, international workshop, QoS-IP 2001, Rome, Italy, January 2001
[7] Huston, Geoff. Internet performance survival guide: QoS strategies for multi-service networks.
[8] Jones, M. Tim. TCP\IP application layer protocols for embedded systems/M.Tim Jones. Charles River Media, c2002
[9] Berlin; New York: Springer, c2001
[10] 郭乐深，刘锦德，杨涛等。通过有效的端系统动态资源管理实现Qos控制。通信学报 2001，22
[11] 赵键，吴介一。一类基于主动网络的网络拥塞控制策略。通信学报，2000，21
[12] 面向广播行业和后期制作工程师MPEG-2基本问题-视频和网络部分白皮书．http://www。videocn.com/
[13] 程冬超 巍骛 张焕强。家庭网关硬件设计文档
[14] 程冬超 张焕强。家庭网关系统(HGS100)设计方案