Power smart peripheral devices with external power supplies
US8996892B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2011 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Nov 28, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A peripheral device includes a host interface, a power interface, a switch, a control module, and a regulator. The host interface transfers data between the peripheral device and a host. The power interface receives power from a power source. The power source is separate from the peripheral device and the host. The control module monitors the host interface and generates a control signal to transition the switch from a first state to a second state when the host interface does not receive an expected signal from the host. The regulator powers the control module and a circuit of the peripheral device based on the power received from the power source. The control module is separate from the circuit. The switch activates the control module, the regulator and the circuit when in the first state and deactivates the control module, the regulator and the circuit when in the second state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.