Design And Implementation Of Digital Tv Ca System

As a result of the equipment of digital technology than the equipment used simulation techniques have better technical performance and user experience, our country's simulation TV is ongoing digital television conversion. The Conditional Access system is a digital television system, key components, reliable and efficient pay-TV CA system to conduct essential to the success of the business.In this paper, the CA in the role of digital television, as well as the current technology and systems technology are analysed and introduced the principles of CA and the major related technologies, including: encryption technology, encryption technology, coding technology, smart card technology and network technology. for the existing shortcomings of CA system , the author give the layout from the CA system and functional point of view the perspective of the overall design and detailed analysis of the CA system and its function of each module, which gives the concrete realization of the detailed design and method.Unified control of the system to achieve flexible, smart cards can be replaced at any time and to remove the binding,realizing binding machine card real pair, greatly increased the smart card hackers to copy the difficulty and cost. Through comprehensive testing of the new system, the new system has a marked improvement in the anti-hacker to crack the system capacity and the main aspects of security.