SECURITY DEVICE MANAGED ACCESS TO INFORMATION

• Main Authors: KAMPERMAN, FRANCISCUS LUCAS ANTONIUS JOHANNES, BOSVELD, FRANK
• Format: Patent
• Language: English; French; German
• Published: 30.09.2009
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

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.