Contact-free display peripheral device for contact-free...

G - Physics – 06 – K

Patent

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G06K 19/077 (2006.01)

Patent

CA 2382083

The invention concerns a display peripheral device for contact-free portable object such as a smart card (10) for displaying data concerning the use of said portable object. Said peripheral device comprises a chip, display means (16) and power and data receiving means (18), not connected by ohmic contact to the portable object. Said reception means is a planar winding serving as secondary of a transformer whereof the primary consists of an antenna (14) of the portable object, when the latter receives power and data, coming from a reader of the portable object, by electromagnetic coupling.

Image La présente invention concerne un dispositif périphérique d'affichage pour objet portable sans contact tel qu'une carte à puce (10) permettant d'afficher des informations liées à l'utilisation de cet objet portable. Ce dispositif périphérique comprend au moins une puce, un moyen d'affichage (16) et un moyen de réception (18) d'énergie et des informations, non relié par contact ohmique à l'objet portable. Ce moyen de réception est un enroulement plan jouant le rôle du secondaire d'un transformateur dont le primaire est constitué par l'antenne (14) de l'objet portable, lorsque cette dernière reçoit l'énergie et les informations, en provenance d'un lecteur de l'objet portable, par couplage électromagnétique.

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