Advanced power management in generic USB drivers
US7577765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2004 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Mar 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4411
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are disclosed to provide advanced power management in generic USB drivers. More particularly, a generic USB device driver architecture is described which enables development through a user-mode USB library that accesses a generic kernel-mode driver. The architecture may be utilized to provide advanced power management. In a described implementation, a method includes defining a power management policy for a device plugged into a computing system and utilizing the defined power management policy to determine when the device enters a suspend mode. Once the device enters the suspend mode, the method allows the computing system to enter a lower-power state. In a further described implementation, the power management policy is defined through a plurality of routines provided by a generic user-mode library (e.g., a dynamic link library (DLL)), where the generic user-mode library is communicatively coupled to a kernel-mode generic device driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.