South bridge configured to detect a high level voltage from a super I/O chip when the computer is shut down
US8205104B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 9, 2009 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Dec 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power supply control circuit for a motherboard of a computer is provided. The power supply control circuit includes a south bridge chip and a voltage output control circuit connected to the south bridge chip. The south bridge chip includes a control pin and a detecting pin. The voltage output control circuit has a voltage input terminal and a voltage output terminal. The voltage output control circuit includes a transistor connected to the voltage input terminal and also connected to the voltage output terminal via a switch component. The voltage output terminal is connected to the detecting pin of the south bridge chip via a super I/O chip. The transistor is capable of controlling the switch component to transmit a high level voltage to the super I/O chip when the computer is shut down. A method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.