宽带数据推播技术及其传送流的软件合成  

Broadband Data Push-casting Technology and the Composition of the Transport Stream Based on Software

作　　者：宋军[1] 甘育裕[2] 吴资玉[2] 

机构地区：[1]重庆大学电气工程学院,重庆400044 [2]重庆大学通信工程学院,重庆400044

出　　处：《重庆大学学报（自然科学版）》2002年第2期63-66,共4页Journal of Chongqing University

摘　　要：电视节目传输数字化已成为趋势 ,数字视频广播使通过广播业务提供宽带数据服务成为可能。文中介绍了DVB标准中的各种数据广播规范 ,详尽地分析了应用于数据推播的数据传送带传输机制 ,并给出了合成MPEG - 2传送流的软件流程图。数据推播将能够比因特网更好地为本地用户服务 ,也是解决上网费用过高、速度太慢。Digitalization of TV program becomes the trend. It is possible to provide broadband data service through DVB. The specifications about data broadcast of DVB are outlined in this paper. A detailed theoretical analysis is made on data carousels applied to data push-casting, and the software flow chart of the composition of MPEG-2 transport stream is also given. Data push-casting can provide better service than Internet for the local subscribers, and it is a good method to resolve the problems such as high cost, low speed of accessing Internet, and great investment of reforming HFC networks.

关 键 词：软件合成 宽带数据推播技术 数据广播 数据传送带 MPEG-2传送流 数字视频广播 数据传输 DVB标准 

分 类 号：TN933.1[电子电信—信号与信息处理] TN915.142[电子电信—信息与通信工程]