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US 2003/0191784 A1Published application
Distributed database management method
AssigneeNone recorded
InventorMichel Buri
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AssigneeNone recorded
InventorMichel Buri
Estimating the term…
The possibilities that are offered to the subscribers of pay television are more and more varied and follow the expectations of consumers. In order to go towards a personalisation of the products proposed to the subscribers it is important to be able to determine the criteria that condition a particular offer using not only the subscriber parameters but also the parameters that can start several subscribers. The method according to the invention consists in memorising in a distributed data base operating centre the group of images of the data bases and carrying out operations tending to fulfil a condition on the group of images of the data bases. In this way, if the condition returns a satisfactory result, the command will be sent to the group of considered data bases.
A method for managing and updating of a group of distributed data bases (DB) linked at least with an operating centre (CAS), comprising the following steps:
An operating centre of a group of distributed data bases (DB) comprising an interface towards a subscriber management system (SMS), an interface towards the data bases (DB), and a conversion unit between the physical address and the logical address of the data bases, characterised in that the centre (CAS) comprises a main data base comprising the image of the data bases (DB).
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
Backward citations are indexed for grants only.
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Of structured data, e.g. relational data: replication, distribution or synchronisation of data between databases or within a distributed database…
Of structured data, e.g. relational data: integrating or interfacing systems involving database management systems
Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing: centralised control of user terminal ;…
Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests: involving handling client requests
Term end not estimated
The present invention concerns the management and the updating of distributed data bases, particularly for the management of a network of pay television decoders as well as allowing access to these data bases.
In a system that comprises an operating centre and a plurality of subscribers distributed throughout a vast territory, each consisting of a subscriber data base, it is known to send management and updating information of the data bases of these subscribers by Hertzian route, by satellite, or by cable. These messages are sent to either all the subscribers, to a particular subscriber, or to a group of subscribers.
The operating centre contains an interpreter that allows to establish the link between the logical address of a subscriber and his/her physical address, allowing thus the link with the group of information distributed in the data bases of the subscribers. In this way a request from a system upstream of the centre, such as the subscriber management system, can access the content of any subscriber data base without it being necessary to know his/her physical address.
The invention will be better understood by means of the following detailed description which makes reference to the annexed drawings that are offered as a non-limiting example, in which:
FIG. 1 represents an operating centre according to the state of the art;
FIG. 2 represents an operating centre according to the invention.
In FIG. 1, representing the state of the art, the SMS system (Subscriber Management System) communicates with the CAS operating centre (Conditional Access System) in order to access one or another of the distributed data bases (DB). The CAS centre serves as an addressing converter between a high level for the SMS and a low level for the DB data bases.
In this way, according to this technique, the CAS serves essentially to create a logical representation of the different data bases of the subscribers and to allow an access that is independent of the material implementation. This function of logical/physical converter is of the CAS.
One of the other important tasks of the CAS is to support the communication protocol with the data bases.