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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 continuous development of digital television, receiver support for service information is more and more important. Firstly, the service information of MPEG-2 PSI and digital video broadcasting is analyzed, and a storage scheme of service information is proposed. The scheme can realize timely storage, search, extraction and update of large amounts of data in a real-time multitasking environment. In addition, hardware resources are reduced due to data sharing and hybrid storage between PSI and service information.