Power receiving device, power feeding device, and electronic apparatus
First Claim
Patent Images
1. A power feeding device comprising:
- power feeding circuitry including a power feeding element, the power feeding circuitry generating a power signal to be supplied in a wireless manner to a power receiving device and outputting the power signal through the power feeding element;
a first detection circuitry connected to the power feeding circuitry, the first detection circuitry configured to detect a measured quality factor from the power feeding circuitry, compare the measured quality factor to a threshold quality factor corresponding to the power receiving device, and continue a power feeding period in which the power feeding element outputs the power signal if the measured quality factor exceeds the threshold quality factor;
a signal generator that generates a pulse signal;
a detection element that is connected to the signal generator to receive the pulse signal and generate an alternating current signal;
second detection circuitry connected to the detection element and configured to receive a detected signal that corresponds to the alternating current signal, the detected signal being received during the power feeding period in which the power feeding element outputs the power signal; and
a controller that determines a detection result corresponding to at least one of an amplitude or a phase of the detected signal, and that controls whether to continue the power feeding period on a basis of the detection result.
1 Assignment
0 Petitions
Accused Products
Abstract
A power receiving device of the disclosure includes a power generator, a detector, and a controller. The power generator includes a power receiving element that receives a power signal supplied in a wireless manner from a power feeding device, and generates direct current power on the basis of the power signal. The detector includes a detection element, and drives the detection element and detects an alternating current signal generated in the detection element, during a power receiving period in which the power receiving element receives the power signal. The controller controls the power feeding device on the basis of a detection result of the detector.
19 Citations
10 Claims
-
1. A power feeding device comprising:
-
power feeding circuitry including a power feeding element, the power feeding circuitry generating a power signal to be supplied in a wireless manner to a power receiving device and outputting the power signal through the power feeding element; a first detection circuitry connected to the power feeding circuitry, the first detection circuitry configured to detect a measured quality factor from the power feeding circuitry, compare the measured quality factor to a threshold quality factor corresponding to the power receiving device, and continue a power feeding period in which the power feeding element outputs the power signal if the measured quality factor exceeds the threshold quality factor; a signal generator that generates a pulse signal; a detection element that is connected to the signal generator to receive the pulse signal and generate an alternating current signal; second detection circuitry connected to the detection element and configured to receive a detected signal that corresponds to the alternating current signal, the detected signal being received during the power feeding period in which the power feeding element outputs the power signal; and a controller that determines a detection result corresponding to at least one of an amplitude or a phase of the detected signal, and that controls whether to continue the power feeding period on a basis of the detection result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification