Radio frequency identification tag device with sensor input
US6720866B1 · kind B1 · utility
174Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1999 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Mar 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency identification tag device having a sensor input which modifies a tag data word bitstream read by an interrogator/tag detector. The sensor input may be a switch contact(s), digital and/or analog. The sensor input may be voltage, current, pressure, temperature, resistance, acceleration, moisture, gas and the like. Power from the radio frequency interrogator/tag reader may be used to power the circuits of the radio frequency tag device, which in turn may supply power to any sensor connected thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.