Integrated physical unclonable function device
US12052376B2 · kind B2 · utility
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4References
16Claims
0Family size
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Key dates
| Filing date | May 25, 2021 |
| Grant date | Jul 30, 2024 |
| Priority date | — |
| Expiry date | Nov 21, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
An integrated physical unclonable function device includes at least one reference capacitor and a number of comparison capacitors. A capacitance determination circuit operates to determine a capacitance of the at least one reference capacitor and a capacitance of each comparison capacitor. The determined capacitances of the comparison capacitors are then compared to the determined capacitance of the reference capacitor by a comparison circuit. A digital word is then generated with bit values indicative of a result of the comparisons made by the comparison circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.