纵观中外新闻发展史 ,传媒业发生的每一次根本性的变革 ,很大程度上都与科技密切相关。数字电视技术伴随着电脑、多媒体、英特网、通信卫星等科技的推广和应用而出现 ,被喻为自 195 4年第一台彩色电视机问世以来电视技术领域的又一场革命。这场革命不仅带来电视传播理念的变化 Throughout the history of the development of news both at home and abroad, every fundamental change in the media industry has been closely linked to science and technology to a large extent. With the popularization and application of technologies such as computers, multimedia, the Internet and communications satellites, digital television technology has been hailed as another revolution in television technology since the advent of the first color television set in 1954. This revolution not only brought about changes in the concept of television broadcasting