In this paper, the Program Specital Information, the Service Information Specificationin and the Electronic Program Guide derived from service information in DVB systems are introduced, and then it descripes the relationship among PSI, SI and EPG.

• 介绍了基于DVB标准数字电视的节目专用信息 (PSI)、业务信息 (SI)规范以及由业务信息生成的电子节目指南 (EPG) ,并表述了PSI,SI和EPG之间的相互关系