Chip card for executing non-modifiable system program routines and their associated replacement program routines, and a method for operating the chip card
CA 2294469 A1 · Owner: Siemens Aktiengesellschaft · Inventors: Worz, Rainer; Weinlander, Markus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The inventive chip card (CK) has an operating system (H) for executing nonmodifiable system program routines (U). Before a system program routine (U) is executed, said operating system (H) requests a check routine (OMF) and allocates said check routine (OMF) an ID code said ID code (Q11) identifying , the corresponding system program routine (U). Using the check routine (OMF) and the ID code, the operating system (H) checks whether a replacement program routine (U') has been allocated (Q12) to the system program routine (U) and , if this is the case (Q31), executes said replacement program routine (U'). In the event that no replacement program routine has been allocated (Q32) the , …
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 June 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2020.
- 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.