Dual-mode smart card
US7472834B2 · kind B2 · utility
6Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2004 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Nov 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A dual-mode smart card comprising several pads of physical contact with an external reader and two pads of connection to an antenna for a contactless operation, and comprising a voltage regulator capable of extracting from a radio frequency excitation reaching the antenna, a supply voltage of the chip's processing circuits, this regulator being controllable by a central circuit to be deactivated in the presence of a supply voltage on contacts of the chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.