System for testing the authenticity of a data carrier
US5917909A · kind A · utility
21Cited by
12References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1995 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Sep 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A system for testing the authenticity of a data carrier determines the physical property of the data carrier from an irreversibly adjustable electric state of a circuit present separately on the integrated circuit, and uses the electric property of the circuit for establishing a characteristic value for the data carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.