Methods and devices for providing power to network-based systems
First Claim
Patent Images
1. A device for providing power to a network-based device comprising:
- a first circuit adapted in a first mode of operation to provide a differential voltage based on input signals of opposite polarity received from a first pair of network pathways and in a second mode of operation to contribute to the provisioning of a common voltage based on input signals of a first polarity received from the first pair of pathways; and
a second circuit adapted in a first mode of operation to supply the differential voltage based on input signals of opposite polarity received from a second pair of network pathways and in a second mode of operation to contribute to the provisioning of the common voltage based on input signals of a second polarity received from the second pair of pathways.
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Accused Products
Abstract
Circuits provide power to network-based devices, such as IP telephones, using spare conductors within existing LAN cables. The circuits, which may comprise diode bridges, are designed to provide power using existing and planned industry guidelines.
35 Citations
69 Claims
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1. A device for providing power to a network-based device comprising:
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a first circuit adapted in a first mode of operation to provide a differential voltage based on input signals of opposite polarity received from a first pair of network pathways and in a second mode of operation to contribute to the provisioning of a common voltage based on input signals of a first polarity received from the first pair of pathways; and
a second circuit adapted in a first mode of operation to supply the differential voltage based on input signals of opposite polarity received from a second pair of network pathways and in a second mode of operation to contribute to the provisioning of the common voltage based on input signals of a second polarity received from the second pair of pathways. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A network-based device comprising:
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a first circuit adapted in a first mode of operation to provide a differential voltage based on input signals of opposite polarity received from a first pair of network pathways and in a second mode of operation to contribute to the provisioning of a common voltage based on input signals of a first polarity received from the first pair of pathways; and
a second circuit adapted in a first mode of operation to supply the differential voltage based on input signals of opposite polarity received from a second pair of network pathways and in a second mode of operation to contribute to the supply of the common voltage based on input signals of a second polarity received from the second pair of pathways. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for providing power comprising:
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providing in a first mode of operation of a first circuit a differential voltage based on input signals of opposite polarity received from a first pair of network pathways and in a second mode of operation of the first circuit contributing to the provisioning of a common voltage based on input signals of a first polarity received from the first pair of pathways; and
providing in a first mode of operation of a second circuit the differential voltage based on input signals of opposite polarity received from a second pair of network pathways and in a second mode of operation of the second circuit contributing to the provisioning of the common voltage based on input signals of a second polarity received from the second pair of pathways. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A device for providing power to a network-based device comprising:
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a first circuit adapted in a first mode of operation to provide a differential voltage based on input signals of opposite polarity received from a first pair of network pathways and in a second mode of operation to contribute to the provisioning of a common voltage based on input signals of a first polarity received from the first pair of pathways;
a second circuit adapted in a first mode of operation to supply the differential voltage based on input signals of opposite polarity received from a second pair of network pathways and in a second mode of operation to contribute to the provisioning of the common voltage based on input signals of a second polarity received from the second pair of pathways;
a third circuit adapted to supply local power; and
a fourth circuit adapted to provide power and communication signals from additional network pathways. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A network-based device comprising:
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a first circuit adapted in a first mode of operation to provide a differential voltage based on input signals of opposite polarity received from a first pair of network pathways and in a second mode of operation to contribute to the provisioning of a common voltage based on input signals of a first polarity received from the first pair of pathways;
a second circuit adapted in a first mode of operation to supply the differential voltage based on input signals of opposite polarity received from a second pair of network pathways and in a second mode of operation to contribute to the provisioning of the common voltage based on input signals of a second polarity received from the second pair of pathways;
a third circuit adapted to supply local power; and
a fourth circuit adapted to provide power and communication signals from additional network pathways. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A method for providing power comprising:
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providing in a first mode of operation of a first circuit a differential voltage based on input signals of opposite polarity received from a first pair of network pathways and in a second mode of operation of the first circuit contributing to the provisioning of a common voltage based on input signals of a first polarity received from the first pair of pathways;
supplying in a first mode of operation of the second circuit the differential voltage based on input signals of opposite polarity received from a second pair of network pathways and in a second mode of operation of the second circuit contributing to the provisioning of the common voltage based on input signals of a second polarity received from the second pair of pathways;
supplying local power; and
providing power and communication signals from additional network pathways. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69)
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Specification