Electronic fingerprinting of semiconductor integrated circuits
US6738294B2 · kind B2 · utility
17Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Sep 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2223/5444
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of identifying an integrated circuit device based on the initial state of certain memory cells within a memory array of the integrated circuit device. For many cells in the memory array the initial state is relatively consistent at each power-up, due to mismatches between the transistors that form each memory cell. Thus these consistent initial states provide a signature of the memory array and the integrated circuit device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.