论文部分内容阅读
世纪之交,广播电视的发展已经从一地一区而进入到数字化、网络化、交互信息化的时代。CATV也正向宽带高速、双向互动的目标迈进,网络的概念也已经由地面、有线传输播放扩展到卫星、无线广播,其中全数字传输技术的突破更为信息高速公路
At the turn of the century, the development of radio and television has entered the era of digitization, networking and interactive information from one area to another. CATV is also moving towards the goal of broadband high-speed and two-way interaction. The concept of network has also been extended to satellite and wireless broadcasting from terrestrial and cable transmission broadcasting. The breakthrough of all-digital transmission technology is more information expressway