System and method for deterring operation of a system outside a specified frequency range
US6462554B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Feb 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting the operation of an electronic device at a frequency that is outside a tested or warranted frequency range. An overvoltage detection device senses an operating voltage. When the sensed voltage exceeds a predetermined voltage level an overvoltage detection signal is generated. The overvoltage detection signal is coupled to an electronic device in which the operating frequency is related to the operating voltage. On receiving the overvoltage detection signal indicating out of warranty operation, the electronic device switches among a number of operating modes to deter the out of warranty operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.