Method for controlling fan speed
US7844170B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 5, 2008 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Jun 9, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for controlling a fan speed is disclosed. The fan cools a CPU in a computer. The method includes defining a CPU-max-temp value of a CPU, such that the first fan speed is linearly enhanced with the increase of a real temperature value of the CPU, when the real temperature value of the CPU is lower than the CPU-max-temp value, and changing the CPU-max-temp value to a higher CPU-max-temp value in a basic input output system. A second fan speed is linearly enhanced with an increase of the real temperature value, when the real temperature value is lower than the higher CPU-max-temp value. The second fan speed is less than the first fan speed at the real temperature value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.