Design And Implementation Of The Digital TV Subscriber Management System And Its CA Application Interface

With the rapid development of the digital TV industry and the triple play fullacceleration, digital cable TV business has become the main driving force to promotethe development of China’s digital TV industry. Digital TV is characterized by precisecontrol of the specific user in a specific period of time to watch some tariffcustomized content can be carried out as a basis for a wealth of value-added services.To provide a large number of programs available to specific users, you need aneffective system to manage different resources which is the digital TV SubscriberManagement System. This paper design and implement an operation support systemwhich can provide service to users, operators, equipment providers and programproviders. Through this system can not only achieve the basic user management,product management and equipment management, but also achieve billing, accountsmanagement and other functions. At the same time it can control the end-user towatch TV programs and easily provide services, control and accurate management forusers.The topic first analyzes requirements of the system. the system will be dividedinto systems management, user management, business acceptance, data reporting,authorization management and other major functional modules. And then based onsystem architecture and database schema, the system function design which includingsystem software architecture design, function modules overall design and the CAapplication interface overall design is completed.And then for system development, writing functional classes, database operationclasses, data validation classes, basic data manipulation classes to deal with business.By selecting ASP.NET to develop user interface and developing safe policy to ensuresystem security. For the design and implement of CA application interface, it mainlydesigns the framework of the CA application interface communication protocol,message packet structure message, parameter type grammatical structure andcommunication session process. Complete the compilation of the CA applicationinterface system in VC#environment and give the system business processes and thecore functions. Interface data is encrypted by the XML Encryption technology toensure secure transmission of authorization information.Finally build the system test environment, configure the system parameters, test the system functions and analyze the application results. The test results show that thefunction of SMS system is proper, the CA application interface successfully completethe extraction, packaging and sending of authorization information, interactivecommunication with CAS efficient and feasible, the set-top box can decrypt the key,the playback is clear and smooth.