| 条件接收系统授权信息的分析 |
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| 引用本文： | 郑利浩.条件接收系统授权信息的分析[J].中国有线电视,2007(8):724-729. |
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| 作者姓名： | 郑利浩 |
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| 作者单位： | 浙江传媒学院,浙江,杭州,310018 |
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| 摘 要： | 数字电视条件接收系统(Conditional Access System,CAS)是广电部门运行服务平台的核心,它保障了节目提供商、网络运营商和用户3方的利益。针对基于密钥的条件接收(Conditional Access,CA)系统,简述条件接收系统基本工作原理、分析条件接收系统中授权控制信息(Entitle Control Message,ECM)和授权管理信息(Entitle Manage Message,EMM)数据包的结构;通过讨论EMM数据量的问题,分析条件接收系统授权方式。
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| 关 键 词： | 条件接收 动态分组授权 |
| 文章编号： | 1007-7022（2007）08-0724-06 |
| 收稿时间： | 2006-12-15 |
| 修稿时间： | 2006年12月15 |
Analysis of Authorization Information of Conditional Access System |
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| ZHENG Li-hao.Analysis of Authorization Information of Conditional Access System[J].China Cable Television,2007(8):724-729. |
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| Authors: | ZHENG Li-hao |
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| Affiliation: | Zhengjiang University of Media and Communications, Zhejiang Hangzhou 310018, China |
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| Abstract: | Digital TV Conditional Access System (CAS) is the core of the service platform in the broadcasting and TV business. It benefits the program vendors, the network vendors and the customers. In connection with the password-based key CAS conditional access, this article introduces the basic mechanism of the system, and presents the data packet structure of Entitle Control System (ECM) and Entitle Manage Message (EMM). Also, theization way of CAS is analyzed by discussing EMM data quality. |
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| Keywords: | ECM EMM |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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