Data processing system using a set of memory cards
CA 2125488 C · Owner: Nagra Plus S.A. · Inventors: Kudelski, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 8, 1993 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.