Powered device interface circuit
US7145439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2004 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Mar 9, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S370/908
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for communicating multi-bit data from a powered device being powered over communication cabling to power sourcing equipment, the method comprising: exhibiting a signature indicative of a device to be powered over communication cabling; sensing a voltage level indicative of remote powering over communication cabling; prior to connecting power to operational circuitry, transmitting first multi-bit information; subsequently to the transmitting first multi-bit information, connecting power received over the communication cabling to the operational circuitry; receiving information from the operational circuitry; subsequent to receiving the information disconnecting the received power from the operational circuitry; subsequent to the disconnecting, transmitting second multi-bit information associated with the operational circuitry, the second multi-bit information comprising at least one bit being a function of the received information; and re-connecting power received over the communication cabling to the operational circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.