嵌入式多媒体通信终端设计及实现  

Design and Realization of Embedded Multimedia Communication Terminal

作　　者：赵安邦 秦波[1] 唐昆[1] 

机构地区：[1]清华大学电子工程系,100084

出　　处：《微计算机信息》2005年第06Z期1-3,共3页Control & Automation

摘　　要：本文介绍了一种基于Linux操作系统的嵌入式多媒体通信终端的软硬件方案的设计及实现。终端硬件电路设计以嵌入式处理器PXA250为核心,以可编程器件CPLD实现逻辑控制,外挂适当的存储器件及其它外围电路,从而构成一个嵌入式系统;软件设计通过对嵌入式系统中有限的处理能力和有限通信带宽资源的综合分析和优化分配,实现了语音、图像、电子白板、短信息以及文件传输等并发的多媒体通信。本终端达到了各项测试指标,在恶劣无线链路上工作稳定、性能优良。The paper introduces the software and hardware design of an embedded multimedia communication terminal based on Linux operating system. The hardware consists of embedded processor PXA250, programmable device CPLD, memory chips and other peripherals. The software realizes intercurrent multimedia communications of speech, still image, electronic white-board, short message and file transmission. The system has been tested and it fulfills its functions excellently.

关 键 词：多媒体通信 嵌入式LINUX操作系统 PXA250 资源分配 

分 类 号：TN91[电子电信—通信与信息系统]