基于OS20的机顶盒软件体系及其应用设计

Software Architecture and Application Design of Set-Top-Box Based on OS20

介绍了ST半导体公司的OS20实时嵌入式操作系统的基本特性。通过DVB-T数字电视机顶盒研发项目的应用设计,分析了机顶盒软件研发的主要问题和软件架构的实现,包括系统的状态机设计、搜台算法的实现、以EPG为主的SI解码系统的设计实现和优化,从各个方面讲述了OS20实时操作系统在机顶盒设计中的应用实践。

This paper introduces the basic characteristics of OS20 realtime operating system of ST Microelectronics Corporation. By experience of DVB-T Set-Top-Box project, the paper analyzes the issues and inplement of software architecture in software development of Set-Top-Box, including design of system status-machine, inplement of channel searching algorithm, the design, inplement, and optimization of SI decoding system that based on EPG, introduces the application in Set-Top-Box design of OS20 real-time operating system form all aspects.