一个EPG系统描述不同网络节目的应用

EPG System Description of Different Network Applications

一个地级市有线电视网络,往往还有下属的县级网络或者无线覆盖网络。在数字电视运营中,由于区域不同,面向的用户群不同,这些网络传输的节目可能不完全相同。如果在地级市前端能够用一套EPG系统来描述不同网络的数字电视节目,这样不仅减少了前端系统设备的投入,也减少了平日节目单录入和维护的工作量。EPG系统的一个扩展功能多NIT能很好地解决这个问题。

The prefecture-level city cable TV network often has sub-county network or wireless coverage network.For digital TV operation,the programs may be not the same due to different regional and user groups.If we can use one EPG system to describe different digital TV program at the head-end of prefecture-level city,we can reduce investment of head-end equipment,as well as workload of daily program input and maintenance.The extension NIT of EPG system could solve this problem,and this thesis will introduce its application.