Contact-free display peripheral device for contact-free portable object
US6799721B2 · kind B2 · utility
9Cited by
15References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A peripheral display device for a portable contactless object such as a smart card (10) enabling information associated with the use of this portable object to be displayed. This peripheral device includes at least one chip, a display (16) and a receiver for receiving energy and information (18), not connected by an ohmic contact to the portable object. This receiver is a flat coil which plays the role of the secondary of a transformer, the primary of which is formed by the antenna (14) of the portable object, when the latter receives energy and information from a portable object reader via electromagnetic coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.