Coupler for managing communication between a portable data...

G - Physics – 06 – K

Patent

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G06K 7/06 (2006.01) G06K 7/00 (2006.01)

Patent

CA 2214098

A coupler for managing communication between a portable data medium and a data exchange device is disclosed. The coupler includes bistable control means (25) input-activated by at least two control signals (DTR, RTS) delivered by the data exchange device in one of two first and second predetermined input sequences, and arranged to output at least one power supply signal (VCC) and a data medium reset signal (RST) in a predetermined output sequence, such that the portable data medium is activated only when one specific input sequence of said two input sequences is received.

L'invention concerne un coupleur pour gérer une communication entre un support de données portable et un dispositif d'échange de données. Selon l'invention, il comprend des moyens de commande bistables (25) activés en entrée par au moins deux signaux de commande (DTR, RTS) délivrés par le dispositif d'échange de données selon l'une de deux première et seconda séquences d'entrée prédéterminées, et agencés pour délivrer en sortie au moins un signal d'alimentation (VCC) et un signal de réinitialisation (RST) du support de données selon une séquence de sortie déterminée, apte à activer le support de données portable, seulement à réception d'une séquence d'entrée particulière parmi les deux séquences d'entrée précitées.

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