Method for generating power supply interruption time information in a contactless data carrier
US7599661B2 · kind B2 · utility
1Cited by
4References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 9, 2004 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | May 25, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method for the determination of disconnection time information (DTI) significant for an inadequate power supply of an integrated circuit (2) of a data carrier (1) such as an RFID-tag. The disconnection time information (DTI) is determined on the basis of the discharge behavior of a first storage capacitor (C1), which is affected by the IC material and by radiation, and the determined disconnection time information (DTI) is corrected in dependence on the effects of the IC material and/or on at least one radiation effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.