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US 9,069,539 B2Granted
Method and system for furnishing power and data from power sourcing equipment to powered device
AssigneeAdtran, Inc.
InventorTimothy James Schlichter
Life of this patent
Estimating the term…
Abstract
A power sourcing equipment is connected to a powered device via a cable. The power sourcing equipment is configured to provide power to different types of devices. The power sourcing equipment has a control system for determining the type of powered device that is connected to the cable and furnishes power in response to the determination. Also described is a powered device capable of establishing communication with PSEs of multiple types.
Claims26
A power sourcing equipment for supplying power to and communicating data with a powered device over a cable, the power sourcing equipment comprising:
- a power supply for providing power to the powered device;
- and
- a control system configured to sense whether the powered device is a first type for receiving power over a first twisted wire pair coupled between the power sourcing equipment and the powered device, the control system configured to sense whether the powered device is a second type for receiving power over second and third twisted wire pairs coupled between the power sourcing equipment and the powered device, the control system configured to connect the power supply to the first twisted wire pair of the cable, if the powered device is the first type, such that a first voltage from the power supply is applied to a first wire of the first twisted wire pair and a second voltage from the power supply is applied to a second wire of the first twisted wire pair, the control system further configured to connect the first voltage to the second twisted wire pair and the second voltage to the third twisted wire pair if the powered device is the second type,
- wherein the second voltage is different than the first voltage, and wherein the powered device is configured to activate a communication circuit of the powered device via power from the power supply, and wherein the communication circuit is configured to communicate data over the cable.
1 more element
A communication system, comprising:
- a powered device having communication circuits;
- and
- a power sourcing equipment connected via a cable to a powered device, the cable having a first twisted wire pair, a second twisted wire pair, and a third twisted wire pair, the first twisted wire pair having a first wire and a second wire, the power sourcing equipment configured to detect if the powered device is a first type and to apply (1) a first voltage of a power supply to a first wire of the first twisted wire pair and (2) a second voltage of the power supply to a second wire of the first twisted wire pair, if the powered device is detected to be the first type, wherein the first voltage is different than the second voltage, the power sourcing equipment further configured to detect if the powered device is a second type and to apply the first and second voltages to the second and third twisted wire pairs, respectively, if the powered device is detected to be the second type,
- wherein the communication circuits are activated by power from the power sourcing equipment, and wherein the communication circuits are configured to establish communication with the power sourcing equipment via the cable.
1 more element
A method of furnishing power to a powered device, comprising:
- determining if the powered device is a first type for receiving power via a first twisted wire pair of a cable coupled to the powered device;
- applying a first voltage to a first wire of the first twisted wire pair and a second voltage to a second wire of the first twisted wire pair, if the powered device is determined to be the first type, wherein the second voltage is different than the first voltage;
- determining if the powered device is a second type for receiving power via second and third twisted wire pairs of the cable;
- and
- applying the first voltage to the second twisted wire pair and the second voltage to the third twisted wire pair if the powered device is determined to be the second type.
2 more elements
A power sourcing equipment connected by a cable to a powered device, the power sourcing equipment comprising:
- a power supply;
- a first controller configured to connect (1) a first voltage of the power supply to a first wire of a first twisted wire pair of the cable and (2) a second voltage of the power supply to a second wire of the first twisted wire pair, if the first controller detects the powered device to be a first type for receiving power via the first twisted wire pair, wherein the first voltage is different than the second voltage;
- a second controller configured to connect (1) the first voltage of the power supply to a second twisted wire pair of the cable and (2) the second voltage of the power supply to a third twisted wire pair of the cable, if the second controller detects the powered device to be a second type for receiving power via the second and third twisted wire pairs;
- and
- communication circuits configured to communicate data with the powered device via the cable.
2 more elements
Dependencies are inferred from the claim text.