So the article was emphasized on some key techniques such as Coding technique, DRM, CDN, Multicast, STB about IPTV system.

简要介绍了IPTV系统中的视频编码、数字版权管理、内容分发网络、组播、机顶盒等关键技术。

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IPTV STB should have functions including Web page browsing, streaming media playing, interactive online game playing, making audio or video calls and so on.

IPTV机顶盒具备网页浏览、流媒体播放、互动网络游戏、音视频电话等功能。

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Based on the study of Digital TV standards, IP network protocol and embedded software and hardware technology, design a IPTV STB.

在深入的研究了数字电视标准、IP网络协议和嵌入式软硬件技术的基础上，设计了网络数字电视机顶盒。

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