用UML设计通用DVB图文电视处理组件  

Design of Universal DVB Teletext Processing Component by Using UML

作　　者：任郁苗[1] 廉毅 

机构地区：[1]西安工业大学电子信息工程学院,陕西西安710032 [2]西安傲林软件有限公司,陕西西安710075

出　　处：《电视技术》2009年第4期30-32,35,共4页Video Engineering

摘　　要：提出了一种针对DVB图文的终端软件解决方案,介绍了该方案基于UML技术的建模设计过程,分析了解码,存储,导航等关键功能,提出了操作系统抽象和回调处理页面显示的思想,解决了组件的兼容性和可移植性问题,最终完成了一个可被广泛集成的通用图文处理组件。A software solution for processing DVB teletext in terminal unit is given, and the modeling and designing process based on UML technology are introduced. Then, the key features such as page decoding, caching and navigating are analyzed. Meanwhile, the OS abstraction and page rendering call back mechanism are applied in order to satisfy the requirements of com- patibility and portability. Finally, a universal teletext processing component is completed.

关 键 词：图文电视 DVB UML技术 组件 

分 类 号：TN934.3[电子电信—信号与信息处理]