条件接收系统(CAS)是数字电视的关键技术之一。
Conditional Access System (CAS) is one of the key technologies of digital television.
分层加密机制正是用来保证条件接收系统的信息传输安全的关键技术。
Mutilayer Encryption Mechanism is just a key technology which is used to guarantee the security of information transmission between CAS.
有条件接收系统通过对节目信息进行加扰从而达到对用户收取收视费用。
Conditional Access System (CAS) is used to charge the subscriber for subscribing fee by scrambling the program information.
整个系统还利用TCP/IP协议与条件接收系统和银行系统进行通信。
The system also communicates with CAS and bank system on TCP/IP.
数字电视节目的数字条件接收系统是保护内容供应商利益的关键技术之一。
The digital control access of digital television program is one of essential technical which protect content supplier benefit.
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。
Introduce the operation principle of the conditional access system of digital TV and a design method based on the intelligent card.
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。
It has reference value for the design of the domestic conditional access system of mobile TV and provides a design concept.
随着数字电视技术的飞速发展，条件接收系统在数字电视广播中占有越来越重要的地位。
With the rapid development of digital TV technology, Conditional Access System is more and more important in the digital TV broadcasting.
安全性是衡量有条件接收系统的重要指标，它直接取决于所采用的加扰算法和密钥分配算法。
Security is an essential factor of CAS, which mainly depends on scrambling algorithm and key distribution algorithm.
IP条件接收系统和数字版权管理系统是目前这个领域内两种主要的内容保护技术解决方案。
IP CAS and IP DRM are two primary Content Protection technologies in this field at present.
条件接收系统(CAS)是DVB系统实现增值的核心，能够提供有效的系统管理和用户控制。
Conditional access system (CAS) is the key to realize the increment of the DVB system and provides effective system management and subscriber control.
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。
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.
重点结合数字电视条件接收系统工作实践，对条件接收技术在数字电视方面的应用作了分析和研究。
Combining with the practice and application on conditional access of digital TV, the technology application in conditional access on digital TV is analyzed.
鉴于条件接收系统的特殊性和敏感性，我国需要尽快制订出一套有自主知识产权的条件接收系统标准。
Because of the conditional access system's speciality and sensitivity, it is urgent for China to develop a standard for conditional access system by itself.
针对数字电视有条件接收系统中的密钥分配，提出了一种基于椭圆曲线密码的分层访问控制密钥分配方案。
A key distribution scheme based on elliptic curve cryptography for Conditional Access System (cas) in Digital TV broadcast is proposed.
在IPTV平台上集成有条件接收系统将会保护IPTV内容提供商的合法权益，也是实现其产业化的前提条件。
Integrating Conditional Access System in IPTV platform can protect the rights and interests of IPTV content providers, also a precondition of implementing its industrialization.
介绍了在VOD系统中有条件接收的原理和实现方法，并讨论了一些关键技术。
This paper introduces the theory of conditional access and its implement in the system of VOD service. Some technical points are also discussed.
根据现有的软硬件技术条件，结合实际需要，本论文提出并详细分析了一种新的基于高密度可编程逻辑器件的高动态全数字解扩接收机系统。
On conditions of the current technology, the thesis puts forward a new high dynamic and whole digital spread spectrum receiver which is based on the high density programmable logic devices.
海洋高分辨率地震调查主要受震源系统、接收系统、缆源的调谐组合技术、地震记录系统和野外作业条件的影响。
The high resolution Marine seismic survey is seriously affected by the energy source, receiver system, the combination of streamer and sources, the recording system and the field conditions.
专为沃尔沃收音机设计的天线系统可以在所有条件下提供最佳的接收效果。
Aerials specially designed for Volvo's radio units to provide the best reception under all conditions.
该系统每个车上有一个工业语音提示器，它接收中央控制室发来的信息后，根据接收到的信息提示操作人员进行操作，为操作人员的正确和安全操作提供了有利的条件。
It can receive the information from the central control room, which is then used to reminder the operators how to do, and to provider them the favorable conditions to operate correctly and safely.
本文主要研究了阵列接收机条件下的OFDM系统的同步问题。
In this paper we deal with the problem of timing synchronization of OFDM systems under array receivers.
本文主要研究了阵列接收机条件下的OFDM系统的同步问题。
In this paper we deal with the problem of timing synchronization of OFDM systems under array receivers.
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