数字电视前端EPG信息修定和扩充

The Edition and Using of EPG in DTV Heard System

阐述了NIT\SDT\PAT\PMT表格中几个重要参数的意义和逻辑映射关系,具体分析BAT表私有描述功能的应用及终端设备出现的集成问题,讨论了EPG功能扩充的技术依据、潜力和发展方向。

Some Practice Using of EPG in Heardsystem are described in this Paper , and Combination with sel-fest Experience , The Mapping relationship for Paramets in SI、PSI Tables is Discussed .How to develop the Function of private Descriptor in BAT is analyzed in more detail .The Technical development about EPG is re-ferred too .