Protocol management method for a passive RF identification device which can harvest power from different power sources
US9411992B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Apr 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0709
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The protocol management method concerns a RFID transponder which comprises first and second field detectors respectively for first and second interrogation fields in order to watch for the reception of these first or second interrogation fields at least respectively during executions of corresponding first and second communication protocols. If during the execution of a communication protocol the reception of the corresponding interrogation field is no more detected by the corresponding field detector while the power provided by the power generator remains equal or superior to the requested power level, then this communication protocol is stopped and the RFID transponder enters a Standby state. When the transponder is in this Standby state, the corresponding field detector continues to watch for the reception of the corresponding interrogation field in order to detect if it is again received and, if this is the case, to trigger a restart of this corresponding communication protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.