世纪之交的世界广播电视，伴随着国际政治的风云变幻、世界经济的动荡起伏、信息技术的飞速发展，正在发生着前所未有的大变化和大发展。一、数字广播电视正在迅速席卷全球20世纪90年代初掀起的广播电视数字化浪潮至今已成席卷全球之势，并形成了当前美、欧、日三强为主，部分 World radio and television at the turn of the century has witnessed unprecedented changes and developments with the drastic changes in international politics, the turbulent world economy and the rapid development of information technology. First, the digital radio and television are rapidly sweeping the globe The tidal wave of digital television and radio and television set off in the early 1990s has now become a global trend and has formed the current top three countries in the United States, Europe and Japan. Part