Frequency division type device for protecting a portable information processing system from data loss when the system experiences unusual voltages
US6907537B2 · kind B2 · utility
0Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2001 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Aug 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/305
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This specification discloses a frequency division type protection device for portable information processing systems. It is composed of a control unit, a piezoelectric unit, a frequency division unit and a display unit. When a portable information processing system experience an unusual voltage, the frequency division unit produces and sends a frequency division voltage to the control to provide its work voltage. The piezoelectric unit temporarily stops its job and the display unit shows the current status of the protection device. The invention can thus protect the portable information system and the data stored therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.