嵌入式Linux下高清机顶盒SI模块优化设计与实现

摘要

In accordance with the design of SI module based on high definition STB, a more optimized design schema is proposed. SI is one of the most core modules in DVB services. In this program, the plan of muti-module divided is adopted, and the passived way of data request is used. Then the new embed database named SQLite3 is drawn into, and it is managed by binary system. Finally, carried by experiment, the SI module can achieve the supposed function better.%针对高清机顶盒SI模块的设计方案,探讨一种更为优化的设计模式.SI模块是DVB业务中最核心的模块之一,在该方案中,采用多模块划分,对每个模块单独实现接口函数.对Section数据包分开单独进行管理与解析,并采用“被动式”数据请求方式.引入新型嵌入式数据库SQLite3,并用二进制形式进行管理.最后,通过实验,SI模块很好地实现了该设计功能.