摘要
IPTV需要网络技术、计算机技术、图像处理技术等的支持,因而体系架构必须满足多种业务、多种技术的特定需求。文中首先介绍了该IPTV系统架构,分为IPTV系统网络架构和IPTV系统功能架构,IPTV系统功能架构又分为运营支撑层、媒体平台层和终端层三大部分。然后介绍了IPTV系统中应用的主要技术,分别是流媒体编解码技术、流媒体传输技术、流媒体内容存储与分发、数字版权管理、EPG等。最后提出了IPTV发展中存在的问题和其发展前景。
IPTV needs the support of network technology,computer technology,image processing technology and so on,thus its architecture must satisfy the specific requirements of various businesses and technologies.The article first describes the IPTV system architecture,including network architecture and function architecture.IPTV system function is further divided into operation support layer,media platform layer and terminal layer.Then it gives the main technologies of IPTV system application,for example,the coding/decoding,transmission,content torage and distribution of streaming media,including the digital copyright management,EPG,etc..Finally,it proposes the problems existing in IPTV development,including its future prospects.
出处
《通信技术》
2010年第3期171-173,176,共4页
Communications Technology
关键词
IPTV
流媒体
组播
EPG
数字版权管理
IPTV
streaming media
multicast
EPG
digital copyright management
