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1 现状 随着有线电视技术、光传输技术、计算机技术的发展,为了提供诸如VOD(视频点播)等新业务,各地的有线电视网络正在不同程度地由传统的单向广播式业务向着双向化、多元化方向发展,以便在各大网络运营商争取高端用户群的竞争中占得先机。
1 Status quo With the development of cable television technology, optical transmission technology and computer technology, in order to provide new services such as VOD (Video on Demand), the cable television networks around the world are varying from traditional one-way broadcast services to bidirectionalization to varying degrees, Diversified direction, so that major network operators strive for competition in high-end users account for the upper hand.