Ultrasonic universal wireless charging
First Claim
Patent Images
1. A contactless charger comprising:
- a charging surface including an array of transmitter sub arrays, each transmitter sub array having a plurality of ultrasonic transmitters; and
logic to;
detect a location of an adjacent ultrasonic receiver of a battery powered device relative to the charging surface based on a differential in a ultrasonic beam reflection energy with respect to planar a beam reflector positioned at a perimeter of the adjacent ultrasonic receiver, the planar beam reflector to direct the ultrasonic beam energy away from the adjacent ultrasonic receiver;
determine a three-dimensional characteristic of a movement of the adjacent ultrasonic receiver based on the differential; and
selectively activate one or more of the transmitter sub arrays based on the location to focus an ultrasonic beam on the adjacent ultrasonic receiver.
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Accused Products
Abstract
Methods and systems may provide for detecting a location of an adjacent ultrasonic receiver of a battery powered device relative to a charging surface of a contactless charger. The charging surface may include an ultrasonic array of transmitter sub arrays, wherein one or more of the transmitter sub arrays may be selectively activated based on the location to focus an ultrasonic beam on the adjacent ultrasonic receiver. In one example, a movement of the adjacent ultrasonic receiver may be detected and the focus of the ultrasonic beam is adjusted in response to the movement.
28 Citations
21 Claims
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1. A contactless charger comprising:
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a charging surface including an array of transmitter sub arrays, each transmitter sub array having a plurality of ultrasonic transmitters; and logic to; detect a location of an adjacent ultrasonic receiver of a battery powered device relative to the charging surface based on a differential in a ultrasonic beam reflection energy with respect to planar a beam reflector positioned at a perimeter of the adjacent ultrasonic receiver, the planar beam reflector to direct the ultrasonic beam energy away from the adjacent ultrasonic receiver; determine a three-dimensional characteristic of a movement of the adjacent ultrasonic receiver based on the differential; and selectively activate one or more of the transmitter sub arrays based on the location to focus an ultrasonic beam on the adjacent ultrasonic receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a contactless charger, comprising:
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detecting a location of an adjacent ultrasonic receiver of a battery powered device relative to a charging surface of the contactless charger based on a differential in a ultrasonic beam reflection energy with respect to planar a beam reflector positioned at a perimeter of the adjacent ultrasonic receiver the planar beam reflector to direct the ultrasonic beam energy away from the adjacent ultrasonic receiver, the charging surface including an ultrasonic array of transmitter sub arrays; determining a three-dimensional characteristic of a movement of the adjacent ultrasonic receiver based on the differential; and selectively activating one or more of the transmitter sub arrays based on the location to focus an ultrasonic beam on the adjacent ultrasonic receiver. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. At least one computer readable storage medium comprising a set of non-transitory computer-executable instructions which, if executed by a contactless charger, cause the contactless charger to:
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detect a location of an adjacent ultrasonic receiver of a battery powered device relative to a charging surface of the contactless charger based on a differential in a ultrasonic beam reflection energy with respect to planar a beam reflector positioned at a perimeter of the adjacent ultrasonic receiver the planar beam reflector to direct the ultrasonic beam energy away from the adjacent ultrasonic receiver, the charging surface to include an ultrasonic array of transmitter sub arrays; determine a three-dimensional characteristic of a movement of the adjacent ultrasonic receiver based on the differential; and selectively activate one or more of the transmitter sub arrays based on the location to focus an ultrasonic beam on the adjacent ultrasonic receiver. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification