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ID:36416393
大小:6.56 MB
页数:126页
时间:2019-05-10
《交互电视数据业务及终端接收算法研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国科学技术大学博士学位论文交互电视数据业务及终端接收算法研究姓名:吴国斌申请学位级别:博士专业:网络传播系统与控制指导教师:倪宏;吴刚20080501摘要央服务器这一拓扑结构,利用广播空闲信道对用户请求进行应答,提高带宽利用率。按需广播算法PRLS按照资源热度并划分不同长度进行广播,减小用户平均等待时间。在双向数据业务推进的过程中,一个关键性问题就是研究元数据系统,定义新的业务规范。本文设计了一种采用了MPEG.2l统一框架下的元数据融合模型,实现了通过数字电视节目内容触发交互数据业务,具有一定的新颖性。本业务已在海南省实际
2、运营。目前海南有线电视双向业务应用试验系统及终端项目已经完成,并在海南省内示范应用,本文的研究成果已经得到实际的应用。关键词:数据广播交互数据业务数据轮播内存置换缓存机制数据广播调度元数据模型IIAbstractAbStraCtTherecentevolutionofnet、Ⅳ0rkteclulologyimpromptsme唱enceof111.cemet,telecomm啪icationne觚orka11dd酒talTVnet、V0rk.CableTVne铆orksubordinatet0thed蟛talTVnetwork
3、ispla妒ngasignficantroleduet0itspossessionofmela玛estnumberofte册inaluserSaIldthewideStapplication.WithdeVelopmentofserViceme唱ence,one·directionalsen,icecaIⅡlotmeetusers’demands.Sen,icesonCableTVnetworkareunde玛oinga仃ansition舶mtraditionalpro影unst0coexsitenceofmultiplese
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6、onsiderationt0thei11herentf.eanlresofcalblenetworkonthebasisofIntemetamdtelecommunicationnetworktecllIlology.Studiesinthisdissercationareprimarilybasedontheprojectof“DeVelopmentofExperimen协lSystemaIldTeminaIforApplicationofCableBidirectionalSeⅣiceinHainaIlProVince”.
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