Research And Implememtation Of Applicationd On Digital Set-top-box

The advantages of Digital TV make it an inexorable trend that the Digital TV replaces the Analogue TV. During the transition, it's the best method that digital TV programs are received through Set-Top-Box (STB). According to development of digtal services,service of Digital TV become more plentiful,and STB not only plays a role in D/A,but promotes development of digitazation of information resources and development of next generation networks.The electronic program guide (EPG) navigation is very important for digital TV, and it is the door entering digital programs. Using the navigation system, you can browse and search the program you need, and can know more information about programs and other services.By interacion operation,user can select what he want.This Paper is apart of the research project"High Definition Digital Cable TV Set-Top-Box". The works of this paper include:1,Research on PSI information of MPEG-2 and DVB-SI. The information is the data source of EPG.2,Research on principles and applications of STLite/OS21 Real-Time Kernel. The Kernel can provide services such as task management, memory management, semaphores,message queues, timers, and interrupt handling.3,Research on the principle of EPG. Change the order of receiving EPG tables, skip PAT and PMT, and receive NIT directly. The design can save time and system resource. Finally, EPG architecture is designed and all modules are implemented.4,propose an interactive EPG model,discuss main applications on interactive EPG,and a multi-function STB model is presented.