Cooling system and method for a portable computer
US6082623A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1999 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Mar 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cooling system and method is provided to automatically switch a Central Processing Unit (CPU) to a proper execution mode according to a current working temperature and a current air flow value. The housing of the portable computer has a ventilation inlet and a ventilation outlet. A table is built and stored in a memory for recording a flow value and its correspondent target execution mode for various working temperatures. A thermal sensor detects a current working temperature and sends the result to a microprocessor. A pressure sensor detects a flow value by sensing air flow passing through the ventilation inlet and outlet and generating a heat dissipation signal representing the current air flow value. The microprocessor then uses the current air flow value to look up the table to find out a target execution mode according to the current working temperature and the current air flow value. After obtaining the target execution mode, the microprocessor will send a control signal to switch the CPU execution mode to the target execution mode. Accordingly, the present invention can prevent the CPU from overheating and still can optimize system performance according to the current work…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.