基于Davinci的IP机顶盒的研究与开发

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1、江苏大学硕士学位论文基于Davinci的IP机顶盒的研究与开发姓名：吴斌申请学位级别：硕士专业：通信与信息系统指导教师：沈廷根20071209江苏大学硕士学位论文(2)描述了Davinci的软硬件结构及其嵌入式开发环境的建立步骤，阐述了基于Davinci技术的多媒体编解码引擎结构的算法建立和实现流程。(3)详细论述了网络传输层和用户应用层的设计和实现过程，包括流媒体协议、红外遥控器控制及屏上用户界面(0SD)的显示，并给出了系统测试的结果。本机顶盒的测试结果表明，视频显示效果清晰，播放流畅，并具有较好的实时性，这为将来机顶盒的功能扩展如：邮件收发、信息咨询等奠

2、定了良好的基础。关键词：机顶盒嵌入式流媒体达芬奇编解码引擎屏幕显示Ⅱ江苏大学硕士学位论文AbstractTheembeddedset-topbox(STB)，whichUSeStheTVasadisplaydeviceandtheintemetastransmissionnetwork，providesmultimediainformationservicestoconsumers．Itwillbringalotofenjoymentsofnetwork，digitalmediaandcomputertechnologythroughtelevisiontom

3、anyfamilies，especiallytochildrenandtheelderlywhoarenotproficientinoperatingPC．Withtheprevalenceanddevelopmentofbroadbandnetworksanddigitaltelevision，theembeddedSTBwillbeexpandedandimprovedinfunctionandbeusedmorewidely．SothestudyoftheSTBsystemhasanimportanttheoreticalandpracticalvalu

4、e．．Embeddedsystemandstreamingmediabecometwonewdevelopmentdirectionsofthecomputerandnetworkcommunicationtechnology．Theembeddedsystemhasmanyadvantagessuchassmallsize，strongperformanceandlowpowerconsumption，highreliabilityandSOon．Nowithasbeenwidelyusedinconsumerelectronics，networkcommu

5、nications，industrialcontrol，andotherfields．StreamingmediatechnologygetsawiderangeofapplicationsinInternetinformationservices，suchasvideo—on-demand，onlinetheater，distanceeducation，interactivetelevision,real-timevideoeonferencing,etc．Set—topboxisthemosttypicalapplicationcombinedwithth

6、eembeddedsystemandstreamingmesaintheinformationdomesticelectricappliances．Inthispaper，theIPSTBbasedontheDavincicontainscomputer，communications，mulfimediaandotheradvancedtechnologies．ItshardwareplatformhasusedTMS320DM6446system-on-chipwhichbasesonARM+DSPdual-coreprocessorarchitecture

7、ofTexasInstrumentsfroin江苏大学硕士学位论文company．ThesoftwaredesignhasusedembeddedLinuxoperatingsystemandmultimediacodecengineofDavincitechnology．Themaintasksofpaperareasfollows：(1)Theconcept，developmentprospect，structureandfunctionofembeddedstreamingmediaSTBhavebeenintroduced，therelevanttec

8、hniquesusedintheSTB