Method for protecting a security real time clock generator and a device having protection capabilities
US7733117B1 · kind B1 · utility
8Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Nov 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0054
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device having protection capabilities, the device includes a voltage supply unit that is connected to an integrated circuit and provides a supply voltage to the integrated circuit; wherein the integrated circuit includes: a security real time clock generator that includes an input; a masking unit that is connected to the input, wherein the masking unit isolates the input when a voltage supply monitor is disabled; and wherein the voltage supply monitor monitors the voltage supply unit and wherein a change in a level of supply voltage affects a level of a signal provided to the input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.