Data processing system having a set of memory cards
AssigneeNagra Plus S.A.
InventorAndre/ Kudelski
Life of this patent
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Abstract
A data processing system comprises a set of memory cards (10) and at least one central administration and processing unit (22). According to the invention, the memory cards and the processing unit together form a relational database. Each memory card contains a memory (28) for storing a set of instructions (A1, A2, . . . , An), each instruction containing a logical link with at least one other instruction. The system is applicable notably to pay-TV and other restricted access systems, for example in banking.
Claims15
A system for processing the storage of data and for carrying out specific programmes, the system comprising:
- at least one data administration and processing unit,
- a plurality of memory cards, and
- at least one data communication means for communicating data between at least one processing unit and each memory card, in order to transmit a given number of instructions to be stored or to be used in a memory card when this card is connected to a processing unit,
- characterized in that:
- each memory card comprises a writeable memory for storing at least some of said instructions, and a memory for storing at least one specific programme, and
- each memory card connected at any instant to at least one processing unit via a communication means constitutes a relational database, all of the cards which are simultaneously connected also forming a relational database.
A set of memory cards, characterized in that each memory card of the set comprises:
- a writeable memory for storing instructions, and a memory for storing at least one specific programme,
- and in that all of the memory cards of the set which are simultaneously connected at any instant to at least one processing unit via a communication means constitute at this instant a relational database.
A method of administering and processing the storage of data and carrying out specific programs, the method comprising the following steps:
- providing at least one data administration and processing unit,
- providing a plurality of memory cards, and
- providing at least one data communication means for communicating data between at least one processing unit and each memory card, and
- transmitting a given number of instructions via a data communication means whereby these instructions are stored in a memory card when this memory card is connected to a processing unit,
- the method being further characterized by the following steps:
- storing at least some of said instructions in a writeable memory of each memory card,
- storing at least one specific programme in a memory of each memory card, and
- constituting the thus-stored instructions in the form of instructions including logic links so that each memory card connected to at least one processing unit via a communication means constitutes a relational database.
A memory card of the type including pay-TV cards, banking cards and other cards for restricted-access and like systems, comprising a writeable memory storing a set of data and at least one programme for performing specific operations on the stored data,
- characterized in that the stored set of data is constituted by storing, at any locations whatsoever selectable by the memory, successive data received by connecting the card, via a data communication means, to one or more data administration and processing units of one or more restricted-access systems or the like,
- the set of data comprising logical links connecting stored data or enabling the setting up of links between the stored data, whatever may be the data storage location or its order of inputting, and possibly also linking with other data, thus constituting within the card a relational database,
- said programme being arranged to go through and inspect the entire set of data of the relational database constituted within the card so as to carry out at least one specific operation with data interconnected by at least one logical link.
Dependencies are inferred from the claim text.