Research And Implementation Of Digital Satellite Receiver And Cas Based On

Currently, the consumer electronic has been evolved by digital revolution.It hasthree major characters: Digitalization, Networking and Information Processing.Inparticular, the rapid development of microelectronics implies that embeddedcomputing technology will play a key role in this industry.These provide the strongpower for Digital Set-Top-Box(DSTB)development.At present,the DSTB withembedded technology is a hot spot in digital consumer electronic appliance.One of the most important part is satellite digital receiver, because of satellitedigital television broadcasting is one of the most important way which has manyadvantages such as big coverage area, spread high quality, by topography conditionthe influence is small, small investment, energy saving and so on. Our countrythrough the independent research and the receiving system live star to speed up thedevelopment of the satellite radio and television, because our country region is vastand the complex terrain, atellite digital television broadcasting becomes the best andmost convenient way because of its unique advantage. When the broadcast TVdevelopment period, people hope to enjoy high quality, more service programs,Conditional access system is in such a background. Conditional access technicalbroughts giant market value, and promotes the healthy development of digitalbroadcast television.According to the marketing requirement,the proposed by decoding chipsGX3113B and demodulation chip GX1131low cost high performance of thehardware solutions.The basic function of the design has satellite receiver hardwaresystem and based on the design of the software platform in the Linux environment.Finally through the design CA processing modules and smart card interface module,realize the program flow of the solution of the trouble, so it can be normal watchprograms.