System and method for controlling an integrated display computer heat sink temperature
US7925902B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2007 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Feb 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/206
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A temperature control system and method for a heat sink in an integrated display computer. Temperature sensing and throttling capabilities of ICs are used to prevent a passive heat sink from rising above a maximum temperature. An algorithm for controlling power usage of the ICs limits the maximum heat sink temperature. The maximum temperature is adjustable with an option in the BIOS. The heat sink temperature is controlled by throttling down the ICs when the temperature rises. An ACPI/OSPM passive cooling mechanism for the CPU defines a thermal feedback equation that operates once a thermal trip point is reached. The higher the actual temperature is above the trip point, the faster the CPU throttles down. Likewise, the CPU throttles up as the actual temperature drops below the trip point. The reported CPU temperature is adjusted higher or lower depending on how close the actual temperature is to the specified heat sink operating temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.