模式匹配在条件接收系统中的应用  

Application of Pattern Matching in Conditional Access System

作　　者：冯燕强 

机构地区：[1]广西广电网络公司加密系统部,广西南宁530028

出　　处：《电视技术》2015年第4期4-6,共3页Video Engineering

摘　　要：通过前端条件接收系统,可以向用户发送授权指令、邮件、公告等信息,同时前端条件接收系统还会接收来自营业厅的催缴费信息、加授权或者减授权的指令,即前端系统对外是具有一定的开放性。因此,对邮件、公告信息、催缴费信息等内容建立审查机制是十分必要的,而这些内容大多数为文字,使用模式匹配算法来建立自动审查机制是一个好的选择。主要介绍文本过滤在条件接收系统中的重要性、如何将模式匹配算法加入到条件接收系统中。Through the front end of conditional access system, which can be authorized to the user instructions, email, announcements and information, at the same time, the front system can also accept conditional access system to place business hall of payment information, add authorization or subtract instruction, authorized by the front-end system of foreign is open. Therefore, a review system of the mail information, announcements and push payment information is very necessary to establish and most of the content for the text, using pattern matching algorithm to set up automatic review mechanism is a good choice. This paper mainly introduces the importance of text filtering in conditional access system, how to join the conditional access system pattern matching algorithm.

关 键 词：条件接收 模式匹配 数字电视 

分 类 号：TN949.197[电子电信—信号与信息处理]