Low-power ethernet device
US7940787B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Nov 8, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In accordance with the teachings of this disclosure, an Ethernet device is provided that draws current below a predetermined voltage, and as the voltage across the device exceeds the threshold, the device transforms into a high-impedance state, appearing as a high impedance device. Once in the high-impedance state, the discovery process proceeds normally as the current drawn through the high-impedance device is no more than normally occurs due to leakage or other typical conditions. Thus, the IEEE discovery now proceeds normally in the higher voltage ranges (6V to 9V) where the device of this disclosure is effectively out of the circuit, causing no interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.