数字电视技术、计算机技术、数字通信技术、微电子技术、网络技术、光学技术和航天技术的高速发展,尤其是码率压缩技术的突破性进展,开阔了人类的视野,更新了人类的观念,创新了人类的知识,开辟了人类的信息时代,创造了综合业务广播的新形态。信息信号的数字化、信息媒体的集成化、信息控制的交互化、信息处理的实时化、信息传递的高速化、信息业务的智能化已经成为综合业务广播的重要特征,其中交互、集成、实时、智 The rapid development of digital television technology, computer technology, digital communication technology, microelectronic technology, network technology, optical technology and space technology, especially the breakthrough of code rate compression technology, has broadened the horizons of mankind and renovated mankind’s concepts, Innovated human knowledge, opened up the era of human information, and created a new form of integrated business broadcasting. The digitalization of information signals, the integration of information media, the interactive control of information, the real-time information processing, the high speed of information transmission and the intelligence of information services have become the important features of integrated service broadcasting. The interactive, integrated, real- wisdom