条件接收

IP网络电视应用中的有条件接收系统

A Conditional Access System for IP Networking TV Systems

数字广播中有条件接收（CA）的实现

Implementation of conditional access ( CA ) in digital broadcasting

用FPGA实现数字电视条件接收系统

Realization of Conditional Access System of Digital TV with FPGA

嵌入式Linux机顶盒及条件接收系统实现研究

Research on set-top-box based on embedded Linux and implementation of conditional access system

条件接收（CA：ConditionalAccess）应用于付费数字电视系统，为数字电视的运营提供了必要的技术手段。

Conditional Access which provides the necessary technologies for the operation of digital TV is widely used in the Pay-TV system .

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 .

基于CI接口的机卡分离条件接收系统设计与实现

Design and Application of CA Separation Base on Common Interface in CAS

AES加密算法在条件接收系统中的应用

The application of the AES encryption arithmetic in the conditional access system

包含了主芯片、内存、调谐解调器、回传通道、CA（条件接收）接口、外部存储控制器以及视音频输出等几大部分。

The hardware includes main chip , memory , demodulator , circle channel , CA , extern memory and video & audio output .

DVB系统中的有条件接收技术及其实现

The Implement and Technologies of Conditional Access System in DVB System

在VOD系统中实现有条件接收

Implementation of Conditional Access in the VOD System

基于MPEG-2的数字有线电视条件接收系统的实现

The Implementation of Conditional Access System of Digital Cable TV Based on MPEG-2

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 .

DVB条件接收系统中独立加扰器的设计与实现

Design and Implementation of Stand Alone Scrambler on DVB-CA System

数字CATV的有条件接收

Conditional Access of Digital CATV

同时EPG也为数字电视系统其他重要的增值服务提供了方便、标准的接口，如CAS（ConditionalAccessSystem条件接收系统）、数据广播等。

EPG also supplies the advantageous and standard interfaces for another added operations . Such as CAS ( Conditional Access System ), data broadcast etc.

基于DVB机顶盒的条件接收模块设计

Design of CA module for STB based on DVB

条件接收系统CAS是保证数字电视系统安全运行的子系统。

Conditional Access System ( CAS ) is the subsystem that ensures the security of digital television system .

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）。

It contains three key technologies called Set-top Box , Middleware and Conditional Access System ( CAS ) .

DVB通用接口和基于它的条件接收模块的设计

CA Module Design Based on DVB Common Interface

该方案讨论了在原有的以条件接收为安全策略的基础上如何利用地址过滤函数和USB密钥，实现平台的安全功能。

The plan is based on the CA system , and it attaches an address filter function and USB key to the digital satellite receiver .

DVB系统的条件接收

The Conditional Access of DVB system

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。

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 ) .

DVB-C条件接收系统及智能卡解决方案的设计与实现

The Conditional Access System of DVB-C and Design of the Intelligent Card

条件接收和数据广播业务在DVB-C机顶盒上的设计与实现

Conditional Access and Data Broadcast Services in STB of DVB-C

而条件接收（CA）模块作为机顶盒中保障数字电视运营商商业利益的重要技术基础，也成为每个机顶盒必须集成的模块。

The CA ( Conditional Access ) module as the important means of protected the interests of digital TV operators , has also become an indispensable component of the STB .

所开发的SDTV机顶盒以ST公司的STi5518芯片为核心芯片，具有硬盘录像和有条件接收接口.本文实现了以专用芯片STi5518为核心器件的SDTV信源解码器。

An implementation of SDTV source decoder based on ASIC is presented in this paper .

接着本文用UML时序图辅助描述CA系统如何起到有条件接收控制的作用，其中CA系统内部各个模块相互协作关系是分析的重点。

In this step , UML sequence diagram is used to make it easier to understand . Here the focus of analysis is relationship among different modules in CA system .

探讨了当前条件接收系统的安全性并给出相关的防御措施；从信息传输的角度，介绍了MPEG-2/DVB标准中CA系统相关信息的复用和传输。

Also paper discusses the security of current conditional access system and relative recovery measure , introduces the composite and transport technology relative to CA system in MPEG-2 / DVB standard .

解复用模块是数字电视机卡分离技术中被分离出来的条件接收卡（以下简称CAM卡），用于TS流的解复用。

The DEMUX module presented in this paper is the conditional access module card ( CAM ) seperated from DTV card and is used for the transport stream DEMUX .