Radio frequency identification tags adapted for localization and state indication
US8222996B2 · kind B2 · utility
29Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | May 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07703
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An embodiment of the present invention provides a radio frequency identification (RFID) tag, comprising at least one light emitting diode (LED) that is controlled by the RFID's logic and powered by the RFID's power harvesting circuit, wherein the RFID tag is capable of being interrogated by an RFID reader and reporting its unique identification number by RF backscatter and/or controlling the illumination state of the at least one LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.