Computer wake up circuit includes a switch configured to prevent a control signals from an I/O controller being transmitted to south-bridge
US8200997B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Aug 26, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Aug 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/3215
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer wake up circuit includes a first control circuit and a second control circuit. The first control circuit has an input terminal configured to receive a first control signal from a first serial device, and an output terminal coupled to a south bridge which is capable of waking up a computer. The second control circuit has an input terminal respectively coupled to a second serial device and an I/O controller, and an output terminal coupled to the south bridge. The second control circuit receives a second control signal from the second serial device. The first and second control circuits respectively outputs a wake up signal to the south bridge to wake up the computer according to the control signals. The I/O controller communicates with the second serial device through the second control circuit, and outputs other control signals to control operations of the second serial device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.