Capacitance-based microchip exploitation detection
US7952478B2 · kind B2 · utility
17Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2008 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | May 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3025
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method detect microchip tampering by including a capacitance circuit that comprises a protective cover. Dielectric material may be sandwiched between the cover and a backside metal layer, which may be proximate a protected surface of the microchip. Changes in the capacitance of the above circuit caused by alteration of the cover or other component of the capacitance circuit may be sensed and prompt defensive action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.