Method and apparatus of providing power management using a self-powered universal serial bus (USB) device
US5799196A · kind A · utility
201Cited by
19References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jul 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/3215
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The capability of a peripheral bus to provide an alternative low power source is combined with existing power management software that controls a computer's main power supply unit to provide stand-by power to logic in the computer that remains active to monitor the system environment for predetermined wake-up events. A self-powered Universal Serial Bus device supplies the minimal power needed by the active logic without the inefficiencies of a dual-stage power supply unit or the expense of incorporating both low-power and a full-power units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.