继而从芯片选型到电路设计详细论述了系统CPU模块、音视频、总线网络等主要功能部分的硬件设计。
Following the hardware design the main function of the system including CPU module, audio and video, the bus network, was discussed in detail from the chip selection to the circuit design.
本文以安防监控系统为例，提出一个建立在以太网上的安防系统，用综合布线网络传输安防系统中的音视频信息。
By monitoring system as example, Ann based on Ethernet defend the system, Ann defends the audio frequency and video information in the system to transmit the comprehensive wiring network.
经分析，要构建一个网络数字电视系统，其关键技术主要集中在音视频信号数字化编码、音视频信号在IP网络有质量的传输、数字版权管理系统等方面。
The key technology of a IPTV system includes audio and video encode, QoS of audio and video transfers over IP network and digital right management system.
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