基于特征的数字电视码流识别系统的实现  

Implementation of Digital Television Transport Stream Identification System Based on Characteristic

作　　者：章文辉[1] 杜百川[2] 常伟[1] 周艳蕾[1] 

机构地区：[1]中国传媒大学信息工程学院,北京100024 [2]国家广播电影电视总局,北京100866

出　　处：《上海交通大学学报》2009年第3期339-343,共5页Journal of Shanghai Jiaotong University

基　　金：中国传媒大学“211工程”三期重点学科建设专项经费资助;国家广播电影电视总局高校科技项目资助(BG0310);国家高技术研究发展计划(863)项目资助(2005AA147100)

摘　　要：基于数字电视传送流结构,提出了一种数字电视码流特征提取与识别系统的实现方案.方案采用相邻2个承载打包基本码流(PES)包头间传送包数量和填充字节数量作为特征参数,通过局域网络传输特征参数,利用显示时间标记(PTS)作为特征参数比对的同步信息,在计算机处理平台上通过软件编程实现了系统方案的基本功能.仿真测试结果表明,相对逐个比特码流比对方案,该方案更为灵活方便,可以扩大数字广播电视的监测范围.Based on the structure of transport steam, this paper presented a transport stream identification approach with characteristic abstraction which adopts the quantity of transport stream packets and specific byte between transport stream packets loaded with the header of packed elementary stream as characteristic parameter, and uses present time stamps as synchronization of characteristic parameter, then transmits these parameters via local area network. The fundamental function of the system was realized on the computer platform finally. The simulation results demonstrate that this approach is much convenient and efficient, compared with one bit to one bit verification approach.

关 键 词：数字电视 基本码流 PES包头 传送流 特征提取 

分 类 号：TN949.197[电子电信—信号与信息处理]