随着数字电视的不断发展,接收机对服务信息的支持显得越来越重要.首先分析了MPEG-2的PSI与数字视频广播的服务信息,提出了一种服务信息的存储方案.该方案可以实现在实时多任务环境下对大量数据的及时存储、查找、提取与更新.此外,由于实现了PSI与服务信息之间的数据共享与混合存储,减小了对硬件资源的要求.

With the development of digital TV technology, the ability of receiver to receive the service information in TS becomes more and more important. Firstly the PSI (Program Specific Information) in MPEG-2 and SI (Service Information) in DVB (Digital Video Broadcasting) are analyzed. Then a storage scheme for SI in DVB systems is presented. In this scheme, SI can be stored, retrieved, extracted and updated in real time and multitask environment. As data can be shared between PSI and SI, the requirement of the hardware resources is greatly reduced.