These devices are heterogeneous and includes IP and analog phones, PDAs, set-top boxes (STB), PCs, DSL or Residential Gateway modems, Wireless Access Point routers, TVs, and so on.

这些设备各种各样，包括 IP 及模拟电话、PDA、 机顶盒（Set-Top Box，STB）、PC、DSL 或家庭网关（Residential Gateway）调制解调器、无线接入点（Wireless Access Point）路由器、TV 等。

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STB (set Top Box), which is designed to extend function of TV set, can provide multiple services since it has powerful capability of multimedia processing and enough IP network access bandwidth.

机顶盒是为扩展电视机功能的一种新的家用电器，它有强大的媒体处理能力，有足够的IP网络接入带宽，可以提供多种网络业务。

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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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