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US 10,381,882 B2Granted
Power receiving device, electric circuit, and power supply device
AssigneeSony Corporation
InventorShigeru Arisawa
Life of this patent
Estimating the term…
Abstract
Provided is a power receiving device including a power receiving coil which receives power supplied by electromagnetic waves, and a measurement coil which is disposed near the power receiving coil and measures an electromagnetic field.
Claims15
A power receiving device, comprising:
- a power receiving coil configured to receive power supplied by electromagnetic waves;
- and
- a detection circuit configured to:
- acquire an impedance of the power receiving coil or an inductance of the power receiving coil;
- and
- detect a presence or an absence of a foreign matter, which hinders the power reception by the electromagnetic waves, from the impedance or the inductance.
3 more elements
A power supply device, comprising:
- a power supply coil configured to supply power to a power receiving device based on a signal transmitted by the power receiving device, wherein the power receiving device comprises:
- a power receiving coil configured to receive power supplied by electromagnetic waves;
- and
- a detection circuit configured to:
- acquire an impedance of the power receiving coil or an inductance of the power receiving coil;
- and
- detect a presence or an absence of a foreign matter, which hinders the power reception by the electromagnetic waves, from the impedance or the inductance.
4 more elements
A detection device, comprising:
- an acquisition circuit configured to acquire an impedance of a coil or an inductance of the coil, the coil is one of set of coils which transmit and receive power by electromagnetic waves;
- and
- a detection circuit configured to detect a presence or an absence of a foreign matter, which hinders the power reception by the electromagnetic waves, from the impedance or the inductance.
Dependencies are inferred from the claim text.