Communication system power loss notification via detection of reverse bias state of a diode based on a threshold voltage
US6895521B2 · kind B2 · utility
1Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2001 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Apr 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one aspect of the invention, a method for power loss notification includes receiving at least a threshold voltage from a power supply. The method also includes charging at least one capacitor when the power supply is supplying at least the threshold voltage. The method further includes failing to receive at least the threshold voltage from the power supply, and reverse biasing at least one diode coupled between the power supply and the at least one capacitor. In addition, the method includes detecting the reverse bias state of the diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.