System and method for persistent ID flag for RFID applications
US9024761B2 · kind B2 · utility
0Cited by
17References
20Claims
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Key dates
| Filing date | Dec 11, 2009 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Jan 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07749
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for persistent ID flag for RFID applications includes a method for operating an RFID tag. The method includes measuring a voltage potential of a supply voltage for the RFID tag, and turning on a pass gate that couples a memory cell to a data line used for reading or writing data, if the voltage potential is greater than a first threshold. An accumulated charge on the memory cell is also measured, and both the voltage potential and the accumulated charge are used to generate a control signal to set a state of the pass gate. The pass gate is turned off if the control signal is a true value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.