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digital television (dtv)中文什么意思

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  1. Conditional access technology ( pay - tv ) has been considered the motivity and trend of the development of digital television ( dtv ) in the globe . but in the common pay - tv system , the key which is used for decoding is stored in the set - top - box ( stb )
    在全球范围内,有条件接收(付费电视)业务已被确认是数字电视发展的动力和趋势,但是,在通常的付费电视系统中,用户的解码解密模块均被置于机顶盒中,系统安全性较低。
  2. Conditional access ( ca ) is a technology used to control access to digital television ( dtv ) services to authorized users by encrypting the transmitted programming . an emm provides general information about the subscriber and the status of the subscription . the emm is sent with the ecm
    数字电视用户管理系统通过对用户订购信息的记录与处理,形成用户数据库,并经由与条件接收系统的接口,向条件接收系统发送用户授权管理信息的基本数据,条件接收系统据此实现对用户收看数字电视节目的控制。

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