G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 19/07 (2006.01)
Patent
CA 2319770
The invention relates to cards containing microprocessors (10) and contacts (22) and is characterized in that an asynchronous communication device (40) is arranged between the contacts (22) and the microprocessor (10) such that it releases the microprocessor from communication tasks and thus allows for better use of the central unit (12) of the microprocessor (10) and of the associated memory elements (14, 16, 18). The device (40) essentially comprises an analysis circuit (34), a verification circuit (36) for verifying the integrity of the pulse trains, a circuit (38) for determining characters in the pulse trains and a plurality of registers (42, 44 and 46) which are connected to the microprocessor (10). The invention is for use with chip cards with microprocessors.
L'invention concerne les cartes à microprocesseur (10) et à contacts (22). L'invention réside dans le fait qu'un dispositif de communication (40) de type asynchrone est disposé entre les contacts (22) et le microprocesseur (10) de manière à décharger le microprocesseur des tâches de communication et ainsi permettre une meilleure utilisation de l'unité centrale (12) du microprocesseur (10) et des mémoires associées (14, 16, 18). Ce dispositif (40) comprend essentiellement un circuit d'analyse (34), un circuit de vérification (36) de l'intégrité des séries d'impulsions, un circuit de détermination (38) des caractères dans les séries d'impulsion et des pluralités de registres (42, 44 et 46) qui sont connectées avec le microprocesseur (10). L'invention est applicable aux cartes à puce à microprocesseur.
Cooreman Pascal
Gomez Bertrand
Rayon Stephane
Gemplus
Robic
LandOfFree
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