Method for controlling fan speed
US7591433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2005 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jul 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/20209
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for controlling the fan speed by detecting different power supplies of a mobile electronic device is proposed. When an external power source is used for mobile electronic device and detected by the embedded controller, the first fan control table is used to control the fan speed to increase the heat dissipation capability of the mobile electronic device. When battery power is used as the power source and detected by the embedded controller, a second fan control table is used to control the fan speed to extend the battery life. The first fan control table and the second fan control table become the relation control table between the temperature of the processor and the fan speed or the relation fan control table between the temperature of the processor and the input voltage of the fan for controlling the fan speed according to the temperature of the processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.