| 用FPGA实现数字电视条件接收系统 |
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| 引用本文： | 陈文全,付国映,赵利,徐继麟.用FPGA实现数字电视条件接收系统[J].现代电子技术,2004,27(3):59-62. |
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| 作者姓名： | 陈文全 付国映 赵利 徐继麟 |
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| 作者单位： | 电子科技大学,电子工程学院,四川,成都,610054 |
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| 摘 要： | 根据数字电视条件接收系统的原理 ,提出一种 ECM在 TS层加入、复接和条件接收相互独立的 CAS实现方法。 ECM在 TS层加入 ,对于 TS层加扰来说 ,易于实现加扰和解扰同步 ;复接和条件接收相互分离使条件接收系统实现比较灵活 ,易于调试。另外 ,设计了保密性较高的加扰器并成功运用于系统中
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| 关 键 词： | 条件接收系统 数字电视 控制字 授权管理信息 授权控制信息 |
| 文章编号： | 1004-373X(2004)03-059-04 |
| 修稿时间： | 2003年9月8日 |
Realization of Conditional Access System of Digital TV with FPGA |
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| CHEN Wenquan,FU Guoying,ZHAO Li,XU Jilin.Realization of Conditional Access System of Digital TV with FPGA[J].Modern Electronic Technique,2004,27(3):59-62. |
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| Authors: | CHEN Wenquan FU Guoying ZHAO Li XU Jilin |
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| Abstract: | According to the principle of conditional access of digital TV.This article puts forward a realization method which adopts inserting ECM into TS and keeping independence of multiplex and CA each other.Inserting ECM into TS makes more easily realize synchronization between the scrambling and descrambling.The separation of CA and multiplex makes CAS more flexibly be realized and more easily be debugged. Furthermore, a more secure scrambler is designed and applied to system successfully. |
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| Keywords: | conditional access system(CAS) digital TV(DTV) control word(CW) entitlement management message(EMM) entitlement control message(ECM) |
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