Bidirectional inline power port
First Claim
Patent Images
1. A method for power delivery, comprising:
- coupling a local device to a remote device with a cable;
receiving power at the local device from the remote device over the cable at a first time; and
providing power from the local device to the remote device over the cable at a subsequent second time.
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Abstract
A method and apparatus for bidirectional provision of inline power over data telecommunications cabling permits power to be received at a local powered device (PD) from remote power sourcing equipment (PSE) via at least one conductor at a first time and power to be provided by the local device to the remote device or another device at a second different time.
130 Citations
44 Claims
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1. A method for power delivery, comprising:
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coupling a local device to a remote device with a cable;
receiving power at the local device from the remote device over the cable at a first time; and
providing power from the local device to the remote device over the cable at a subsequent second time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for power delivery, comprising:
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coupling a local device to a remote device with an Ethernet cable;
determining if the remote device is a powered device or if the remote device is power source equipment;
receiving power over the interface responsive to determining that the remote device is power source equipment; and
transmitting power over the interface responsive to determining that the remote device is a powered device.
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12. An apparatus for power delivery, comprising:
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means for coupling a local device to a remote device with a cable;
means for receiving power at the local device from the remote device over the cable at a first time; and
means for providing power from the local device to the remote device over the cable at a second subsequent time. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An apparatus for power delivery, comprising:
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means for coupling a local device to a remote device with an Ethernet cable;
means for determining if the remote device is a powered device or if the remote device is power source equipment;
means for receiving power over the interface responsive to determining that the remote device is power source equipment; and
means for transmitting power over the interface responsive to determining that the remote device is a powered device.
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23. A power delivery system, comprising:
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an interface operable to couple a cable to a remote device;
a controller operable to determine if the remote device is a powered device (PD) or if the remote device is power sourcing equipment (PSE);
a power receiver receiving power over the interface responsive to the controller'"'"'s determination that the remote device is PSE; and
a power transmitter transmitting power over the interface responsive to the controller'"'"'s determination that the remote device is a PD. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A data telecommunications network, comprising:
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a first device having a first port configured as power sourcing equipment (PSE);
a second device having a second port coupled to said first port, and a third port, the second port configured as a powered device (PD) and the third port configured as PSE, the second and the third port coupled within the second device to communicate data;
a third device having a fourth port coupled to said third port, and a fifth port, the fourth port configured at a first time as a PD and the fifth port configured at the first time with inline power turned off, the fourth port and the fifth port coupled within the third device to communicate data;
a fourth device having a sixth port coupled to said fifth port, and a seventh port, the sixth port configured at the first time with inline power turned off, the sixth port and the seventh port coupled within the fourth device to communicate data; and
circuitry for detecting a loss of power at a second time delivered from said third port to said fourth port, said fourth port adapted to turn off inline power responsive to said circuitry, said fifth port adapted to be configured as a PD responsive to said circuitry, and said sixth port adapted to turn on inline power and configure itself as PSE in response to said fifth port becoming configured as a PD.
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39. A method of operation for a data telecommunications network having a first device having a first port configured as power sourcing equipment (PSE), a second device having a second port coupled to said first port, and a third port, the second port configured as a powered device (PD) and the third port configured as PSE, the second and the third port coupled within the second device to communicate data, a third device having a fourth port coupled to said third port, and a fifth port, the fourth port configured at a first time as a PD and the fifth port configured at the first time with inline power turned off, the fourth port and the fifth port coupled within the third device to communicate data, and a fourth device having a sixth port coupled to said fifth port, and a seventh port, the sixth port configured at the first time with inline power turned off, and the sixth port and the seventh port coupled within the fourth device to communicate data, said method comprising:
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detecting a loss of power at a second time delivered from the third port to the fourth port;
turning off inline power at the fourth port in response to said detecting;
configuring the fifth port as a PD in response to said detecting;
turning on inline power at the sixth port and configuring the sixth port as PSE in response to the fifth port becoming configured as a PD.
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40. A data telecommunications network, comprising:
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a first device having a first port configured as power sourcing equipment (PSE) at a first time; and
a second device having a second port coupled to said first port, said second port configured as a powered device (PD) at the first time, wherein at a second time different from the first time the first port is configured as a PD and the second port is configured as PSE.
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41. A method of operation for a data telecommunications network having a first device with a first port configured as power sourcing equipment (PSE) at a first time, and a second device with a second port coupled to said first port, said second port configured as a powered device (PD) at the first time and receiving power from said first port, said method comprising:
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changing a mode of operation of the first port from PSE to PD; and
changing a mode of operation of the second port from PD to PSE so that at a second time the second port supplies power to the first port. - View Dependent Claims (42)
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43. A method for power delivery, comprising:
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coupling a local device to a remote device with a cable having at least two wire pairs;
receiving power at the local device from the remote device over the cable via the at least two wire pairs at a first time; and
providing power from the local device to the remote device over the cable via the at least two wire pairs at a subsequent second time.
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44. An apparatus for power delivery, comprising:
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means for coupling a local device to a remote device with a cable having at least two wire pairs;
means for receiving power at the local device from the remote device over the cable via the at least two wire pairs at a first time; and
means for providing power from the local device to the remote device over the cable via the at least two wire pairs at a second subsequent time.
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Specification