SYSTEMS, METHODS, AND DEVICES FOR MULTI-LEVEL SIGNALING VIA A WIRELESS POWER TRANSFER FIELD
First Claim
1. A wireless power receiver configured to receive power from and communicate with a wireless power transmitter via a wireless field, the wireless power receiver comprising:
- a resonant circuit having a receiver impedance capable of being sensed by the transmitter; and
an impedance adjustment circuit configured to adjust the receiver impedance to transmit multi-level signaling data values to the transmitter.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems, methods and apparatus are disclosed for signaling between wireless power transmitters and receivers. In one aspect a wireless power receiver is disclosed. The wireless power receiver includes an antenna circuit characterized by an impedance. The antenna circuit is configured to wirelessly receive power for powering or charging a load. The wireless power receiver further includes an impedance adjustment circuit configured to communicate multi-level signaling data values to a wireless power transmitter coupled to the receiver. The wireless power transmitter includes a controller configured to receive a signal indicative of a change in receiver impedance and determine the multi-level signaling data values based on the detected change.
42 Citations
32 Claims
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1. A wireless power receiver configured to receive power from and communicate with a wireless power transmitter via a wireless field, the wireless power receiver comprising:
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a resonant circuit having a receiver impedance capable of being sensed by the transmitter; and an impedance adjustment circuit configured to adjust the receiver impedance to transmit multi-level signaling data values to the transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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receiving power via a wireless field with a wireless power receiver from a wireless power transmitter for powering or charging a load; and adjusting an impedance of the wireless power receiver to communicate multi-level signaling data values to the wireless power transmitter. - View Dependent Claims (14, 15, 16)
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17. A wireless power receiver, comprising:
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means for receiving power via a wireless field with a wireless power receiver from a wireless power transmitter for powering or charging a load; and means for adjusting an impedance of the wireless power receiver to communicate multi-level signaling data values to the wireless power transmitter. - View Dependent Claims (18, 19)
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20. A wireless power transmitter configured to transmit power to and communicate with a wireless power receiver via a wireless field, the wireless power receiver having an resonant circuit having a wireless power receiver impedance, the wireless power transmitter comprising:
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an impedance detection circuit configured to detect a change in the wireless power receiver impedance; and a processor configured to determine multi-level signaling data values based on the change in the wireless power receiver impedance. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method comprising:
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detecting a change in impedance of a wireless power transmit circuit configured to wirelessly transmit power; and determining multi-level signaling data values based on the change in impedance. - View Dependent Claims (28, 29)
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30. A wireless power transmitter, comprising:
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means for detecting a change in impedance of a wireless power transmit circuit configured to wirelessly transmit power; and means for determining multi-level signaling data values based on the change in impedance. - View Dependent Claims (31, 32)
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Specification