Contactless integrated-circuit card comprising inhibiting means
AssigneeGemplus
InventorsPhilippe Patrice, Laurent Oddou, Ray Freeman, Thierry De Ffontaines, Michael Zafrany
Life of this patent
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Abstract
A contactless smart card has a sheet-like body containing an integrated circuit and an antenna via which the integrated circuit communicates with a terminal. The antenna lies in the plane of the card body and is constituted by several turns of a conductor that form a winding. A conductive bridge connects at least two turns of the winding to reduce its inductance. The card body includes a rupture zone that is designed to be broken when the card is first used. A portion of the connecting bridge lies within the rupture zone, so that it is broken when the rupture zone is broken during use.
Claims17
A contactless integrated-circuit card, comprising:
- a card body in a form of a sheet,
- an integrated circuit in said card body,
- an antenna by means of which the integrated circuit is able to communicate at a distance with a reception terminal, said antenna comprising plural turns of a conductor that form a winding which lies in a plane of the card body, and
- at least one conductive connecting bridge which connects two consecutive turns of the antenna in order to reduce the inductance thereof, wherein said connecting bridge lies partly in a rupture zone of the card body which is intended to be broken when the card is first used in order to break the connecting bridge.
A contactless integrated-circuit card, comprising:
- a card body forming a planar sheet,
- an integrated circuit in said card body,
- an antenna by means of which the integrated circuit is able to communicate at a distance with a reception terminal, said antenna comprising plural turns of a conductor that form a winding which lies in a plane of the card body, and
- at least one conductive connecting bridge which connects two turns of the antenna in order to reduce the inductance thereof, wherein said connecting bridge lies in a rupture zone of the card body which is located within the turns of the antenna and is intended to be broken when the card is first used in order to break the connecting bridge.
Dependencies are inferred from the claim text.