Based On C/S Mode DVB Network Real-time Updating Of STB Software System And Optimization Technology Research

Along with the popularization of computer technology, and with the development of information technology, intelligent technology, network technology, the embedded system obtain large develop space. The traditional TV technology has been widely application and development; Along with the development of high performance integrated chips technology and embedded technology maturity, various embedded products has been quietly walked into our life. As an aggregation of latest computer technology and TV technology: high-definition digital television has attracted large attentions. All countries of the world hope to get controller field in this new field. The developed countries and regions just as United States, European Union and Japan have established their high-definition digital television technology standard, and trying to capture this technology field. Along with the high development of this new technology and the market of mature gradually, more and more HD digital TV product will come into our life.HD digital TV set-top box has been discussed as the object for this thesis; we focus on design and optimization the set-to box software real-time update system which base on C/S mode.At the beginning, this article introduces the development history and situation of TV technology all of the world; the concept, basic function and key technology of digital cable TV set-top boxes, and the development trend of digital TV in our country.Combined with practical experience, this article summarize the hardware architecture and module function of set-top box, and focus on the Modules design of STB software real-time update system which base on ST5105.The architecture of this design is based on C/S mode, we put our thinking on increasing update speed, optimization the performance of system and improving the code reusability, Mainly introduces the server and STB software system function design each module function design and implementation. Then simulate the real TV network environment for testing the whole hardware and software system and propose optimization solution comments and amendment opinions.