Method and system to determine external power available and fault states
US6795302B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2003 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | May 20, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/263
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system determines the status of an external power supply connection to an information handling system. A subsystem manager of the information handling system compares an external power source identification signal and a power available signal to determine whether external power is available, unavailable or faulty. For instance, an information handling system configured as a portable computer receives external power from an AC/DC converter along with an identification signal for the converter. A state machine running on the portable computer system's Super I/O compares the identification signal and a power available signal from an internal charger to determine state of the external power source and indicate the state to a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.