Communication between electromagnetic transponders
US7308249B2 · kind B2 · utility
4Cited by
14References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2003 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Mar 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electromagnetic transponder intended to draw the power necessary to its operation of from a field radiated by a terminal of transmission of a carrier at a first supply frequency and to back-modulate the received signal at the rate of a sub-carrier at a second frequency lower than the first one, and comprising means capable of demodulating and decoding signals modulated by said sub-carrier, as well as a system of communication between such transponders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.