公开(公告)号：EP0841813B1

公开(公告)日：2004-06-30

申请号：EP97203433.4

申请日：1997-11-05

申请人： Koninklijke Philips Electronics N.V.

发明人： Koster, John ,  Bosveld, Frank

IPC分类号： H04N7/173 ,  H04N5/44

CPC分类号： H04N21/4351 ,  G06F8/65 ,  H04N5/44 ,  H04N21/4435 ,  H04N21/8166

公开(公告)号：EP1833251A2

公开(公告)日：2007-09-12

申请号：EP07104287.3

申请日：1997-04-30

申请人： Koninklijke Philips Electronics N.V. ,  PHILIPS NORDEN AB

发明人： Kamperman, Franciscus, L., A., J. ,  Bosveld, Frank

IPC分类号： H04N7/16

CPC分类号： H04N7/1675 ,  H04N7/163 ,  H04N21/2347 ,  H04N21/235 ,  H04N21/25875 ,  H04N21/26606 ,  H04N21/4181 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4405 ,  H04N21/4623 ,  H04N21/6581 ,  H04N21/8133 ,  H04N21/835 ,  H04N21/858

摘要： A system for managing access to audio and/or audiovisual information (INF) by a group of subscribers, the system comprising a receiver (REC) and a security device (SD) cooperating with the receiver, the receiver (REC) comprising
means (FRE, FIL) for receiving the information in scrambled form and for receiving an entitlement message (EMM) concerning an entitlement for at least a subset of said subscribers to access the information, and
a descrambler (DES) for descrambling the information,
the security device being configured to process the entitlement message to obtain an entitlement data object (DO, EDO) associated with the information, and to store said entitlement data object in the security device,
the descrambler being configured to descramble the information only if the entitlement data object associated with the information is present in the security device and allows the descrambling, the receiver further comprising a circuit (CON) for retrieving additional data (ADA) related to the entitlement data object,
characterized in that a pointer (PO) indicating a location (LO) from which the additional data may be obtained is stored in the security device,
in that the security device is arranged to transmit the pointer to the receiver, and
in that the receiver is arranged to receive the pointer from the security device and to automatically retrieve the additional data as indicated by the pointer.

摘要翻译： 一种用于由一组用户管理对音频和/或视听信息（INF）的访问的系统，所述系统包括与所述接收机协作的接收机（REC）和安全设备（SD），所述接收机（REC）包括装置（FRE ，FIL），用于以加扰形式接收信息并且用于接收关于所述用户的至少一个子集的授权的授权消息（EMM）以访问所述信息;以及解扰器（DES），用于解扰所述信息，所述安全设备为 被配置为处理所述授权消息以获得与所述信息相关联的授权数据对象（DO，EDO），并且将所述授权数据对象存储在所述安全设备中，所述解扰器被配置为仅当所述授权数据对象 信息存在于安全设备中并允许解扰，接收机还包括电路（CON），用于检索相关的附加数据（ADA）t o所述授权数据对象，其特征在于，指示可以从其获得附加数据的位置（LO）的指针（PO）被存储在所述安全设备中，其中所述安全设备被布置为将所述指针发送到所述接收器， 并且接收机被安排为从安全设备接收指针并且自动地检索由指针指示的附加数据。