conditional access

conditional access system ( cas) is the subsystem that ensures the security of digital television system.

条件接收系统CAS是保证数字电视系统安全运行的子系统。

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the content of this paper is as follows: design a conditional access system adopting three-level-encryption.

主要内容如下：设计了一个采用三层加密体制的条件接收系统。

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common interface is an important part of dvb conditional access system for descrambling the received transport stream.

通用接口是DVB条件接入系统用于接收码流解扰的重要组成部分。

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moreover, the protocol makes it possible that various conditional access systems use the same set-top box because it is not necessary for the set-top box to store any secret proprietary data of conditional access system in advance in the protocol.

而且，协议为不同的条件接收系统使用同样的机顶盒提供了可能，因为在协议中机顶盒不需要事先存储任何条件接收系统的秘密私有数据。

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conditional access system, which acts as a necessary technical measure in pay television, will hardly meet the demands of the market with the growing digital tv industry.

条件接收作为数字电视收费的必要的技术保障手段，随着数字电视产业的不断升温，市场需求也越来越迫切。

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conditional access system acts as a key role in the mobile tv broadcasting system.

条件接收是移动数字电视广播系统的一个核心部分。

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digital tv ( dtv) service information ( si) standard is the basis of multi-program transmission, conditional access ( ca), charge system, electronic program guide ( epg), multi-media system and other value added services.

数字电视业务信息标准是多路数字电视节目传输、条件接收及收费系统、电子节目指南、多媒体系统及其他增值业务的基础。

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the addressable path management technology can be complementary with conditional access technology, which accelerates the development of digital catv.

路权管理技术与条件接收技术协调互补，促进了有线数字电视的发展。

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conditional access is the important technology to realize ppv service, as the efficiency and security of key distribution are the main factors which influence the performance of condition access system.

条件接收是实现PPV业务的重要技术，而其中的密钥分发效率和安全性又是影响条件接收系统性能的关键因素。

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conditional access system ( cas) is one of the key technologies of digital television.

条件接收系统（CAS）是数字电视的关键技术之一。

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the conditional access system-ca protects the tv signal.

条件接收系统保护电视信号。

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the it team provides conditional access support for remote workers.

IT团队为远程办公人员提供条件访问支持。

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this paper proposed a new key distribution algorithm based on hierarchical access control for conditional access system in digital television broadcast.

提出一种应用于数字电视广播中有条件接收系统的基于分级访问控制的密钥分配算法。

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cat conditional access table clut color look-up table

彩色查找表

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the new policy describes conditional access for europe.

新政策描述了欧洲条件准入。

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the user may check information of e-mail, smart card and conditional access by this operation.

用户可以根据此项操作来查看电子邮件、智能卡、条件接收等信息。

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introduce the operation principle of the conditional access system of digital tv and a design method based on the intelligent card.

介绍数字电视条件接收系统的工作原理及一个基于智能卡的条件接收系统的设计方法。

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the engineer checks the cat conditional access table.

工程师检查条件接收表。

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Secondly, this thesis describes the detailed device characteristics, design restrictions, design idea of the IP-STB, the hardware system and the conditional access system ( CAS).

接着详细描述了IP机顶盒的设备特征、设计约束、设计思路、硬件平台和条件接收系统。

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the engineer explained the conditional access sub-system to the team.

工程师向团队解释了条件访问子系统。

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it has reference value for the design of the domestic conditional access system of mobile tv and provides a design concept.

对国内移动数字电视条件接收系统的设计者具有一定的参考价值，提供了一种设计思路。

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the teacher explained cac conditional access control in the it class.

老师在信息技术课上讲解了条件访问控制。

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the school uses conditional access control for the computer lab.

学校为计算机机房使用条件访问控制。

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conditional access system ( cas), which can provide an effective system management and user control, is the key technology for dtv operating agencies to carry out pay-tv and a variety of value-added services.

数字电视条件接收系统能够提供有效的系统管理和用户控制，是数字电视运营商开展付费电视及各种增值业务的关键技术。

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applying the corresponding conditional access criterion, the paper put forward a kind of scheme for conditional access system, which was under the equipments we had.

本文应用相应的条件接收标准，提出了一种在现有设备基础上实现数字电视条件接收系统的方案。

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for implementing of these services, one key question is selecting a secure, open conditional access system.

为了确保这些新业务的实现，一个重要的问题是选择一个安全、开放的条件接收系统。

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it contains three key technologies called set-top box, middleware and conditional access system ( cas).

它包括了三大关键技术即机顶盒、中间件以及条件接收系统（CAS）。

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the technician entered the conditional access system id correctly.

技术员正确输入了条件接收系统标识符。

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the engineer explained the conditional access system-cas to us.

工程师向我们解释了条件接收系统。

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leo checked the conditional access table in the manual.

利奥查阅了手册中的条件访问表。

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