Wireless Power Utilization in a Local Computing Environment
First Claim
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1. An electronic device configured to supply wireless power to an external device, comprising:
- a coil;
transmit circuitry coupled to the coil, wherein the transmit circuitry is configured to supply the wireless power to the external device using the coil via a wireless link;
load sensing circuitry coupled to the coil, wherein the load sensing circuitry is configured to detect a change in loading of the coil indicative of a presence of the external device adjacent to the coil; and
a controller coupled to the load sensing circuitry, wherein the controller is configured to receive wireless power information from the external device and wherein the controller is configured to adjust the transmit circuitry based on the detected change in loading of the coil and the received wireless power information.
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Abstract
Various embodiments of a wirelessly powered local computing environment are described. The wireless powered local computing environment includes at least a near field magnetic resonance (NFMR) power supply arranged to wirelessly provide power to any of a number of suitably configured devices. In the described embodiments, the devices arranged to receive power wirelessly from the NFMR power supply must be located in a region known as the near field that extends no further than a distance D of a few times a characteristic size of the NFMR power supply transmission device. Typically, the distance D can be on the order of 1 meter or so.
2 Citations
20 Claims
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1. An electronic device configured to supply wireless power to an external device, comprising:
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a coil; transmit circuitry coupled to the coil, wherein the transmit circuitry is configured to supply the wireless power to the external device using the coil via a wireless link; load sensing circuitry coupled to the coil, wherein the load sensing circuitry is configured to detect a change in loading of the coil indicative of a presence of the external device adjacent to the coil; and a controller coupled to the load sensing circuitry, wherein the controller is configured to receive wireless power information from the external device and wherein the controller is configured to adjust the transmit circuitry based on the detected change in loading of the coil and the received wireless power information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic device configured to supply wireless power to an external device via a wireless link, comprising:
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a coil; transmit circuitry coupled to the coil; load sensing circuitry coupled to the coil, wherein the load sensing circuitry is configured to detect a change in loading of the coil indicative of a presence of the external device adjacent to the coil; and a controller coupled to the load sensing circuitry, wherein the controller is configured to enable the transmit circuitry to transmit the wireless power to the external device using the coil via the wireless link in response to detecting the change in loading of the coil using the load sensing circuitry. - View Dependent Claims (12, 13, 14, 15)
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16. An electronic device configured to supply wireless power to a wireless power receiving device, comprising:
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a wireless power transmitting coil; transmit circuitry coupled to the wireless power transmitting coil, wherein the transmit circuitry is configured to transmit the wireless power to the wireless power receiving device using the wireless power transmitting coil via a wireless link; a current sensor coupled to the wireless power transmitting coil, wherein the current sensor is configured to detect a change in current in the transmit circuitry associated with a presence of the wireless power receiving device adjacent to the wireless power transmitting coil; and a controller coupled to the current sensor, wherein the controller is configured to receive wireless power information from the wireless power receiving device and is configured to adjust a frequency of the wireless power transmitted by the transmit circuitry based on the received wireless power information. - View Dependent Claims (17, 18, 19, 20)
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Specification