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概述面对三网融合,有线电视网络面临着巨大挑战,也迎来了很好的发展机遇,在数字时代,有线电视网络应提供集数据、语音、文字、图象等多种媒介的多媒体信息服务,具有集成性、同步性与交互性等显著特点。有线电视网络改造应同时考虑广播网络和双向网络。有线电视网络双向化改造必须合理利用现有HFC的网络资源,充分发挥用户接入电缆的带宽优势,因地制宜选择改造方法,以提高有线电视网络的承载能力,逐步实现双向、交互、多功能;
Overview Faced with triple play, CATV faces great challenges and welcomes very good opportunities for development. In the digital era, cable television networks should provide multimedia information in a variety of media such as data, voice, text and images Service, with the integration, synchronization and interaction, and other notable features. Cable network transformation should consider both broadcast networks and two-way networks. The two-way transformation of CATV network must make rational use of the existing HFC network resources, give full play to the bandwidth advantage of users’ access cables, and select the transformation methods according to local conditions so as to enhance the carrying capacity of CATV networks and gradually realize bidirectional interaction and multi-functions;