Contactless integrated-circuit card comprising inhibiting means
US6386459B1 · kind B1 · utility
42Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Jan 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07749
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.