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China Broadcasting Analog TV industry is in an important period of transition to digital. Beginning in 2004, has actively promoted all provinces Cable television The overall translation work. Foshan has been completed, Qingdao, Hangzhou and other modes of establishment.
Digital TV System is a collection from the program, program Make , Program transmission until the client receiver must process signals digitally-end systems. Using digital technology not only makes a variety of television equipment was higher than the existing analog equipment technical performance, but also with analog technology can not meet the new features that make TV technology into the new era. Easy transfer of digital encryption, scrambling, digital transmission processing can enter the broadband integrated services digital network, to achieve graphics, data transmission, on-demand TV, TV shopping, interactive two-way communication transmission services, and multimedia communications, multi-functional, so that radio TV access to the rapidly age.
How to build a kind of security, stability, and give radio and television industry to bring value-added benefits that the platform is a simple and complex task. The reason is simple because the system's various modules are relatively clear. However, the choice of modules and the interface between a very complicated project, need to consider all aspects. Now, I am on a platform some personal views on shallow, we want to help.
1 [link widoczny dla zalogowanych], CA system CA is the core of the development of digital television, her follow-up to the development of stability and capacity-building key to digital television platform, so the CA to provide companies with high demands.
First, CA providers must be able to long-term development of large corporations. CA's R & D and the continuous development of products, the annual after-sales maintenance requires a lot of capital investment, and CA is not a short-term investment products can be return, which is generally small companies can not reach, CA to provide companies must stand the test of large companies. Otherwise, select the CA small companies can also run in previous years, so when the CA returns a small company can not keep up to lend support to the maintenance of late can not be guaranteed, it would be a fatal blow to digital television.
Secondly, CA to provide companies must master the core technology CA has a strong R & D capabilities, to provide protection against future feature upgrades. When the business can not keep up the market demand, CA provider not to promote new features to meet Operation Operators.
Again, in order to protect the stability of the system [link widoczny dla zalogowanych], high-performance front-end hardware Server (Such as SUN's server) is necessary and should not use low-cost PC Machine, thus avoiding the use of PC, the situation of frequent crashes. Actually, CA compared to the entire front end into the input digital television platform, is much smaller. Imagine hundreds of thousands more into the system to ensure stability, eliminating the instability generated by the system dimension Care Workers As, the number of maintenance cost savings. In so doing we put hundreds of thousands more worthwhile.
Again, CA to be passed the test of time, because selection has been running a long time [link widoczny dla zalogowanych], the number of users and use cases and more CA systems.
Again, choose the CA system when selecting the third party Loader. In order to construct a general CA systems technical barriers and enhance the operator's replacement cost, use private Loader system, resulting in replacement Smart Card Must be manually recovered STB . So select the CA when the Loader to use third-party systems, enabling operators to CA through the air Loader replacement, without manual recovery set top boxes, greatly reducing the cost of rep