Dual-mode detection of powered device in power over ethernet system
US7613936B2 · kind B2 · utility
2Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Apr 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Novel circuitry and methodology for detecting a Powered Device (PD) in a system for providing power to the PD. PD detection circuitry detects the PD in a first mode by providing detection current to probe the PD, and in a second mode by providing detection voltage to probe the PD. A control circuit determines that the PD is a valid device if the PD is detected both in the first mode and in the second mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.