Detection for four pair powered devices
US9281691B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2013 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Jul 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A twin power sourcing equipment constituted of: a first power sourcing equipment; and a second power sourcing equipment arranged for connection to a powered device over respective power paths; the first and second power sourcing equipments arranged to: simultaneously perform detection of the powered device; and in the event that at least one of the first and second power sourcing equipments detects the presence of the powered device, alternately perform detection of the powered device to detect a signature impedance; and in the event that each of the alternate detection is indicative of the presence of the signature impedance, provide power to the powered device simultaneously by the first and second power sourcing equipment. Power is not provided to the powered device in the event that the simultaneous detection is indicative of the absence of the powered device on each of the first path and the second path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.