Selecting a power state based on predefined parameters
US7296171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2004 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Dec 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/3203
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An algorithm automatically selects a power state based on device configuration parameters. The selected power state may then be returned and/or automatically implemented in a shutdown of the device. The parameters can include whether the device supports a system battery, whether the device is connected to an uninterruptible power supply, whether a value is available for remaining battery life, whether the device is receiving AC power and/or whether a hibernate fail safe feature is available. A shutdown failure algorithm may also be included. The shutdown failure algorithm detects a failed attempt to shut down the device using a selected power state. The power state selection is changed and shutdown is then re-attempted. If shutdown again fails, a force shutdown flag is set. If shutdown again fails, a shutdown failure is reported.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.