Irdeto Access B.v.

Irdeto Acess B.v.

Albert Jan Bosscha

Gerard Johan Dekker

Antonius Johannes Petrus Maria Van De Ven

Werner Stephanus Strydom

Jaco Du Plooy

A method of authorising conditional access to an encrypted digital data product, includes storing at least one set of entitlements in a secure device, each entitlement including a product identifier and expiry information, receiving entitlement control messages from a decoder system including a device for decrypting encrypted digital data products using control words, each entitlement control message including a product identifier, and in a first mode, returning at least one control word in response to an entitlement control message including a product identifier if the product identifier corresponds to a product identifier in a stored entitlement including expiry information indicating the entitlement to be valid, and, in a second mode, progressively adjusting a counter to a pre-determined value and returning at least one control word in response also to entitlement control messages including a product identifier if the product identifier corresponds to a product identifier in a stored entitlement including expiry information indicating expiry of the entitlement and if the counter is at a value between an initial value and the pre-determined value. The counter is set to an initial value to commence operation in the second mode upon receiving an entitlement control message including a product identifier corresponding to a product identifier in a stored entitlement that includes expiry information indicating expiry of the entitlement.

Method and device for authorising conditional access

A method of external data storage in a system including a primary processing device, having a processor and a primary data storage unit, adapted to run application programs for processing active records in the processor and configured to store data belonging to active records in the primary data storage unit; and a secondary data storage system, accessible to the primary processing device, includes loading data belonging to an active record into the primary data storage unit and externalising the record by transferring at least a piece of data belonging to the record to the secondary data storage system for storage. The step of externalising a record includes the making of a call by an application program using data belonging to the record to an interface, arranged to transfer the piece of data to the secondary data storage system.

Method and system of externalising / internalising a data record that allow processing of part or all of the record

A method of controlling communication between a head-end system and a number of client systems through a network, wherein, for each receiver, only a nearest one of the multicast router systems in the network is configured to forward a copy of a message addressed to the multicast groups of which the receiver is a member directly to the receiver, includes: maintaining subscriber group information linking each registered one of the number of client systems to an associated one of a plurality of subscriber groups, and allocating registered client systems to at least one multicast group, such that all client systems associated with a particular subscriber group are in a common multicast group. Information uniquely identifying the nearest multicast router system nearest to a receiver for a first client system is obtained, and the first client system is assigned to a subscriber group including at least one further client system having the same nearest multicast router system.

Method of controlling communication between a head-end system and a plurality of client systems

A method of external data storage in a system including a primary processing device, having a processor and a primary data storage unit, adapted to run application programs for processing active records in the processor and configured to store data belonging to active records in the primary data storage unit; and a secondary data storage system, accessible to the primary processing device, includes loading data belonging to an active record into the primary data storage unit and externalizing the record by transferring at least a piece of data belonging to the record to the secondary data storage system for storage. The step of externalizing a record includes the making of a call by an application program using data belonging to the record to an interface, arranged to transfer the piece of data to the secondary data storage system.

Growing community of inventors

Hoofddorp, Netherlands

Albert Jan Bosscha