Power supply subsystem for powering a node over communication cabling
First Claim
1. A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising:
- a management and control unit;
at least one port for connection to a LAN switch;
a combiner combining power into the communication cabling substantially without interfering with data communication between the LAN switch via the at least one port and the at least one node; and
current limiting circuitry controlling current of said power delivered into said communication cabling via said combiner, wherein said management and control unit is operative to interrogate the at least one node to which it is intended to transmit power over the communication cabling in order to determine whether the node'"'"'s characteristics allow it to receive power over the communication cabling.
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Accused Products
Abstract
A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising: a management and control unit; at least one port for connection to a LAN switch; a combiner combining power into the communication cabling substantially without interfering with data communication between the LAN switch and the at least one node; and current limiting circuitry controlling current of the power delivered into the communication cabling via the combiner, wherein the management and control unit is operative to interrogate the at least one node to which it is intended to transmit power over the communication cabling in order to determine whether the node'"'"'s characteristics allow it to receive power over the communication cabling.
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Citations
20 Claims
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1. A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising:
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a management and control unit;
at least one port for connection to a LAN switch;
a combiner combining power into the communication cabling substantially without interfering with data communication between the LAN switch via the at least one port and the at least one node; and
current limiting circuitry controlling current of said power delivered into said communication cabling via said combiner, wherein said management and control unit is operative to interrogate the at least one node to which it is intended to transmit power over the communication cabling in order to determine whether the node'"'"'s characteristics allow it to receive power over the communication cabling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising:
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a management and control unit;
at least one port for data connection to a LAN switch;
at least one port for connection of communication cabling to the at least one node;
a combiner combining power into the communication cabling substantially without interfering with data communication between the LAN switch and the at least one node; and
current limiting circuitry controlling current of said power delivered into said communication cabling via said combiner, wherein said management and control unit is operative to interrogate the at least one node to which it is intended to transmit power over the communication cabling in order to determine whether the node'"'"'s characteristics allow it to receive power over the communication cabling.
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19. A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising:
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a management and control unit;
at least one port for connection to a LAN switch;
a combiner combining power into the communication cabling substantially without interfering with data communication between the LAN switch via the at least one port and the at least one node; and
current limiting circuitry controlling current of said power delivered into said communication cabling via said combiner, said current limiting circuitry being operative to provide a first current limit level which is never exceeded, and a second current limit level which is not exceeded for more than a predetermined period of time, wherein said management and control unit is operative to interrogate the at least one node to which it is intended to transmit power over the communication cabling in order to determine whether the node'"'"'s characteristics allow it to receive power over the communication cabling.
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20. A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising:
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a management and control unit;
at least one port for data connection to a LAN switch;
a combiner combining power into the communication cabling substantially without interfering with data communication between the LAN switch and the at least one node; and
current limiting circuitry controlling current of said power delivered into said communication cabling via said combiner, said current limiting circuitry providing a first current limit level which is never exceeded, and a second current limit level which is not exceeded for more than a predetermined period of time, wherein said management and control unit is operative to interrogate the at least one node to which it is intended to transmit power over the communication cabling in order to determine whether the node'"'"'s characteristics allow it to receive power over the communication cabling.
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Specification