Activation and indication of an RF field on a device including a chip
US9189725B2 · kind B2 · utility
2Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2010 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Aug 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07354
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device includes a main antenna suitable for capturing and transmitting an RF signal, at least one chip containing information and configured to transmit the information via the main antenna in response to an excitation of an external RF signal, and a mechanism for activating and deactivating the main antenna. The device further includes a detection circuit for detecting the presence of the external RF signal, and an indicator circuit, which is connected to the detection circuit so as to indicate the presence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.