Portable electronic device comprising several contact-free integrated circuits
US6774865B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jan 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07796
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a device (40) comprising a combination of at least two contactless integrated circuits (45), each integrated circuit being connected to an individual antenna coil (46) to send and/or receive data by inductive coupling. According to the present invention, the device comprises a collective antenna coil (42) that is larger in size than the individual antenna coils of the integrated circuits, and means (41) for arranging the individual antenna coil of an integrated circuit proximate to the collective antenna coil, at least when data are to be read and/or written in the integrated circuit, so that the individual antenna coil of the integrated circuit is inductively coupled to the collective antenna coil. Application to smart cards, electronic badges or electronic labels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.