CMMB转播系统  

CMMB-Based TV Broadcasting System

作　　者：刘同兴[1,2] 蒲宝明[2] 盛娴[1,2] 

机构地区：[1]中国科学院研究生院,北京100049 [2]中国科学院沈阳计算技术研究所,辽宁沈阳110171

出　　处：《计算机系统应用》2010年第11期32-37,51,共7页Computer Systems & Applications

摘　　要：CMMB是英文China Mobile Multimedia Broadcasting(中国移动数字多媒体广播)的简称。目前CMMB的主要业务为视频广播业务,因为受终端硬件的约束,目前只能在配有CMMB模块的设备上观看CMMB视频节目。提出了一种基于CMMB系统的数字电视转播系统,阐述了系统架构以及各部分的设计与实现,并对H.264、AAC的RTP传输、解码、同步表现等关键技术与算法进行了详细的说明。经实验证明,该系统能够完成CMMB数字电视转播,并且能够使多个用户在Windows,Linux,Symbian三类操作系统的终端下共享收看到数字电视节目。扩展了通用终端的功能,节约了用户的经济投入,并且解决了CMMB室内覆盖不足的缺点。CMMB is the abbreviation of China Mobile Multimedia Broadcasting.At present,CMMB system mainly provides video broadcasting service.With the restriction of hardware,only the terminal with the CMMB module can receive CMMB video program.A digital TV broadcasting system based on CMMB is presented.The framework of system and the design of all parts are expounded.The implementations of the key technologies and algorithms are explained in detail.Experiments show the system is able to accomplish broadcasting of the digital TV based on CMMB and share watching digital TV program under Windows,Linux,Symbian operating systems.It extends the function of general intelligent device and reduces the costs and resolves the problem of CMMB poor indoor signal coverage.

关 键 词：CMMB 视频广播 H.264 RTP DIRECTSHOW SYMBIAN 

分 类 号：TN943[电子电信—信号与信息处理]