System and method for operating a sensed power device over data wiring
First Claim
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1. A power and data delivery system comprising:
- a networking cable comprising at least one wire pair;
a power source coupled to the networking cable, the power source configured to transmit data and power of at least two power levels over the networking cable;
a powered device coupled to the networking cable, the powered device configured to receive the data and the power;
wherein the power of the at least two power levels comprises a low power level and a high power level; and
the powered device requests power of the high power level by sending a signal to the power source over the networking cable.
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Abstract
According to the present invention, a power source delivers power to a networked device over network cabling (e.g., Ethernet cabling) in one of two modes: a low power mode and a high power mode. The power source begins delivering power at a low power level in the low power mode, and switches to a high power level in the high power mode after a communication exchange between the networked device and the power source. A power source delivery system includes circuitry on both the power source and the powered device for communicating information between the devices.
136 Citations
38 Claims
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1. A power and data delivery system comprising:
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a networking cable comprising at least one wire pair; a power source coupled to the networking cable, the power source configured to transmit data and power of at least two power levels over the networking cable; a powered device coupled to the networking cable, the powered device configured to receive the data and the power; wherein the power of the at least two power levels comprises a low power level and a high power level; and the powered device requests power of the high power level by sending a signal to the power source over the networking cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for transmitting power and data over a networking cable, comprising the steps of:
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detecting whether a device capable of receiving power and data is networked; if the device capable of receiving power and data is networked, transmitting power at a low power level over the networking cable; and signaling from the device to request power at a high power level. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A power and data delivery system comprising:
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means for transmitting data and power of at least a low power level and a high power level to a networked device over a networking cable; means for separating the data and the power received from the networking cable; and means for signaling a request for the power of the high power level over the networking cable. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A system for transmitting power and data over a networking cable, comprising:
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means for detecting whether a device capable of receiving power and data is networked; if the device capable of receiving power and data is networked, means for transmitting low power over the networking cable; and means for signaling from the device to request high power. - View Dependent Claims (26, 27)
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28. A power source comprising:
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a DC power supply configured to supply power of at least two power modes; a data source configured to supply data; a power/data combiner configured to combine the power and the data for transmission over a networking cable; and wherein the power/data combiner is further configured to detect a powered device being connected to the networking cable. - View Dependent Claims (29, 30, 31, 32, 33)
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34. A powered device comprising:
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a power/data splitter configured to separate data and power of at least two power modes received over a networking cable; a data receiver module configured to receive the data; and wherein the powered device requests a high power mode by sending a signal to a power source of the networking cable. - View Dependent Claims (35, 36, 37, 38)
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Specification