| 数字电视广播中的条件接收系统 |
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| 引用本文： | 姜秀华,龙学锋. 数字电视广播中的条件接收系统[J]. 中国传媒大学学报, 2002, 9(1): 19-27. DOI: 10.3969/j.issn.1673-4793.2002.01.003 |
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| 作者姓名： | 姜秀华 龙学锋 |
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| 作者单位： | 1. 北京广播学院,电子信息工程系,北京,100024;2. 北京广播学院,学报编辑部 |
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| 摘 要： | 条件接收(CA)是数字电视广播开展视频信息服务的重要保证.本文介绍了数字电视广播中的CA系统、安全保密技术的原理、以及同密、多密和通用接口的实现模式,并对CA系统的发展方向进行了讨论.
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| 关 键 词： | 条件接收 授权管理信息(EEM) 授权控制信息(ECM) 同密 多密 软件CA |
| 文章编号： | 1007-8819(2002)01-0019-09 |
| 修稿时间： | 2001-11-15 |
The conditional access system for digital television broadcasting |
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| JIANG Xiu-hua ,LONG Xue-feng. The conditional access system for digital television broadcasting[J]. Journal of Communication University of China Science and TEchnology, 2002, 9(1): 19-27. DOI: 10.3969/j.issn.1673-4793.2002.01.003 |
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| Authors: | JIANG Xiu-hua LONG Xue-feng |
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| Affiliation: | JIANG Xiu-hua 1,LONG Xue-feng 2 |
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| Abstract: | The conditional access system is important for video information service in the digital TV broadcasting. This paper introduces the conditional access system for digital TV broadcasting, the principle of security , application model of Simulcrypt and Multicrypt ,and discuss the development of CA system. |
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| Keywords: | Conditional access Entitlement management messages Entitlement control messages Simulcrypt Multicrypt software CA. |
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