simulcrypt synchronizer

Design and Implementation of Software Adaptable Layer in SimulCrypt Conditional Access System;

同密条件接收系统软件适配层的设计与实现

Analysis on Synchronizaton Issues in DVB SimulCrypt System;

DVB同密系统中的同步问题分析

Implementation of DVB Simulcrypt;

DVB同密(Simulcrypt)的实现

This paper introduces the theory on head-end and receiver of the conditional access system,which is the synchronous working among all of the modules including conditional access systems(CASs),subscriber management system(SMS),entitlement control message(ECM),entitlement management message(EMM) and DVB-CSA in a DVB simul-crypt and multi-crypt system.

主要分析了条件接收系统前端和接收端的工作原理,以及条件接收系统(CAS)、用户管理系统(SMS)、授权控制信息(ECM)、授权管理信息(EMM)和通用加扰算法等在DVB同密或多密系统中的协同工作,并重点介绍了授权控制信息(ECM)、授权管理信息(EMM)之间的相互关系。

The CA(Conditional Access )System is the main frame in the DVB technology,the article mainly introduces several part including that the CA system frame part,the typical system constructions,the system working principal,the analyze of key security system,the scrambling technology and the encryption technology which concerning the concept of Simul-Cryption and the Multi-Cryption etc.

CA条件接收系统是数字电视技术的重要一环 ,着重介绍数字电视技术DVB中CA系统的组成框架、典型的系统结构、系统工作原理、系统所使用的密钥安全体系分析以及加扰技术、加密技术 ,其中包括同密与多密的概念等。

In this paper,the different shape(ball,ellipse,cube)of dense segment of Solid Medical Waste CFB(SMW-CFB)is presented,and to the structure character of the different CFB segment, the particle motion character of SMW in CFB with different shape dense segment have been done, and the significative results is gotten.

提出了不同密相区结构形状(球形、椭球形、方形体)的固态医疗垃圾循环流化床(SMW-CFB),并针对SMW- CFB各段特征,对循环流化床不同密相区形状对固态医疗垃圾颗粒运动特性的影响进行了数值研究,结果表明:密相区为球形体结构比其它结构形状密相区更易出现回流。