RFID group selection method
US8981909B2 · kind B2 · utility
2Cited by
36References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2005 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Dec 4, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention describes a selection and arbitration method for reading a population of RFID transponders (tags). The transponders are selected or de-selected individually, or in one or more groups, using one or more command signals from a reader. The command signals from the reader include selection or de-selection criteria for selecting or de-selecting transponders by moving them between different states by setting or resetting a command flag, such as a flip-flop, in the transponders. The different transitional states include a Ready state, an Active state, a Standby state, a Singulated state and a Quiet state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.