Determination of wake signal initiation on shared wake pins in computing devices
US9032225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/2422
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of computer-implemented methods, systems, computing devices, and computer-readable media are described herein for transitioning a computing device between a first state in which the computing device uses a first amount of power and a second state in which the computing device uses a second, greater amount of power. The computing device may include a shared wake pin to which a first external device and a second external device may be operably coupled, and a communication bus to which the first external device is connected and the second external device is not. Responsive to receipt of a wake signal at the wake pin, the computing device may transition between states, send an instruction to the first external device over the communication bus, and determine whether the first or second external device initiated the wake signal based on a response at the wake pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.