Providing data communication between power supply device and powered device in system for supplying power over communication link
First Claim
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1. A system for supplying power over a communication link, comprising:
- a power supply device for providing power to a powered device via the communication link, said power supply device being configured for receiving from the powered device detection information for detecting the powered device and classification information for determining a power level of the powered device, and information circuitry for handling additional information presented by the powered device in addition to the detection and classification information.
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Abstract
Novel circuitry and methodology for providing data communication between a power supply device and a powered device in a system for supplying power over a communication link. The power supply device, such a device for supplying power over Ethernet, receives from the powered device detection information for detecting the powered device and classification information for determining a power level of the powered device. Information circuitry may be provided for handling information presented by the powered device in addition to the detection and classification information.
80 Citations
32 Claims
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1. A system for supplying power over a communication link, comprising:
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a power supply device for providing power to a powered device via the communication link, said power supply device being configured for receiving from the powered device detection information for detecting the powered device and classification information for determining a power level of the powered device, and information circuitry for handling additional information presented by the powered device in addition to the detection and classification information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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- 14. A power supply device for providing power to a powered device over Ethernet, comprising information detection circuitry for detecting information presented by the powered device after supplying power to the powered device.
- 18. A powered device for receiving power supplied from a power supply device over Ethernet, the powered device is configured for providing the power supply device with additional information presented in addition to detection and classification information according to IEEE 802.3af standard.
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23. A method of supplying power over a communication link, comprising the steps of:
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detecting a powered device coupled to the communication link, detecting a power requirement of the detected powered device, providing power to the powered device and detecting information presented by the powered device after the power requirement is detected. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A local area network (LAN) comprising:
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a plurality of nodes, a network hub and communication cabling connecting the nodes to the network hub for providing data communications;
the network hub including a power supply device for supplying power over the communication cabling to a load;
the power supply device being configured for detecting information presented by the load in addition to information relating to detecting the load and detecting a power requirement of the load.
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31. A Power over Ethernet (PoE) system comprising:
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a power supply device for providing power to a powered device, said power supply device being configured for receiving from the powered device detection information for detecting the powered device and classification information for determining a power level of the powered device in accordance with IEEE 802.3af standard, and information circuitry for handling additional information presented by the powered device in addition to the detection and classification information provided in accordance with the IEEE 802.3af standard. - View Dependent Claims (32)
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Specification