Data exchange system comprising portable data processing units

G - Physics – 07 – F

Patent

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G07F 7/10 (2006.01) G06F 1/00 (2006.01) G06F 21/00 (2006.01) G06K 19/07 (2006.01)

Patent

CA 2182783

Data exchange system comprising at least one portable data processing unit (5) comprising data communication means (14), processing means (15) and memory means (16), the latter comprising an executive program (17) and one or more application descriptions (18(1) ... 18(n)), each application description comprising at least one interaction context (19(1) ... ) comprising commands, data elements, data references, procedures, access conditions, and external references; the structure of the data elements and the data references as well as other references is chosen in such a way that a very efficient use of the restricted memory space of e.g. smart cards is obtained.

Système d'échange de données comportant au moins une unité portative de traitement de données (5) équipée d'un dispositif de transmission de données (14), d'un dispositif de traitement (15) et d'un dispositif à mémoire (16), ce dernier étant doté d'un programme superviseur (17) et d'une ou plusieurs descriptions d'application (18(1) ... 18(n)) dont chacune comporte au moins un contexte d'interaction (19(1) ...) comportant des instructions, des données élémentaires, des références de données, des procédures, des conditions d'accès et des références externes. La structure des données élémentaires, des références de données et des autres références est choisie de telle sorte que l'efficacité de l'utilisation de l'espace mémoire limité, par exemple, des cartes à mémoire est très élevée.

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