1、有线电视 HFC网络双向改造技术交流天柏宽带 市场发展部李颖然Copyright 2000-2004 Digital Video NetworksTVShoppingOnline GamingDistance LearningTV mailVOD NVODDVB/IPTV SystemIntegrationBroadcasting EquipmentSet-Top Box design系统方案头端设备网络设备机顶盒有线电视IP宽 带光纤干线运营资质战略伙伴(21%)战略伙伴(16%)技术服务网络平台研发产品Middleware CABroadcasting Control SystemSubs
2、criber Management System天柏集团中信 集团EPGReal time Data TV WebContentsMotorolaCopyright 2000-2004 Digital Video Networks天柏在中国Copyright 2000-2004 Digital Video Networks目录&HFC网络概述&双向网络改造的基本原则&主流双向网络改造技术对比&天地通 BIOC双向网络改造方案介绍Copyright 2000-2004 Digital Video NetworksHFC有线电视网络 100 ChannelsHeadendCOAX TapDropN
3、odeHubHubNode NodeCable Modem PCNode Node NodeNodeNodeHubBroadband RouteruBR7246PSTNInternetCNNHBOESPNFNNNodeDOWNSTREAM 88 - 880MHzUPSTREAM 5 - 42 MHzCopyright 2000-2004 Digital Video NetworksRF频率&Radio Frequency (RF) Above Audio to InfraRed&Down Stream (DS) (Forward)Cable company to subscriber55-75
4、0 (860) MHz Up Stream (US) (Reverse) Subscriber to Cable company 5-42 (30) MHzNote: Non North American systems can have different cutoff frequenciessuch as 65 MHz, 88 Mhz 105 Mhz etc.Copyright 2000-2004 Digital Video Networks模拟电视频道Copyright 2000-2004 Digital Video Networks模拟 /数字混传Copyright 2000-2004 Digital Video Networks光发射机Copyright 2000-2004 Digital Video Networks光接收机
