Device for checking energy received by an antenna for preventing data corruption during a write operation in a non volatile transponder memory
US8328103B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2008 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0701
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A transponder circuit includes an antenna for receiving radio frequency signals and an extraction unit for extracting therefrom energy for the transponder circuit, a non volatile memory unit, a control logic unit that activates a received energy evaluation unit when a write operation is received. The evaluation unit is arranged directly at the antenna to provide the control logic unit with a signal representative of the status of energy available in the antenna indicating whether the available energy is greater than a minimum level for ensuring a proper write operation or not, wherein the control logic unit is arranged for performing, or not performing, the write operation. The evaluation unit includes a resistive divider including a set of resistors or a programmable current source and rectifier means on each connector of the antenna for simulating a write operation in the memory and energy recoverable by the power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.