Poe four pair active detection apparatus and method
US9929866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2015 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Nov 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A power over Ethernet (PoE) connection check method comprising: for a first time period, generating a first detection power over the first set of wires while not generating a second detection power over the second set of wires and obtaining a first indication of a power attribute over the first set of wires; during a second time period, generating the first detection power and generating a second detection power, greater than the first detection power, over the first set of wires; during the second time period, obtaining a second indication of the power attribute over the first set of wires; determining a first difference between the first indication and the second indication; and controlling a first power enable circuit and a second power enable circuit to provide power to the powered device over the first and second sets of wires respectively, responsive to the determined difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.