WIRELESS POWER RECEIVING DEVICE, RECEIVER CIRCUIT THEREOF, AND CONTROL METHOD OF WIRELESS POWER RECEIVING DEVICE
First Claim
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1. A wireless power receiving device, comprising:
- a receiving antenna;
a rectifier circuit connected to the receiving antenna, that generates a rectified voltage;
a charging circuit to receive the rectified voltage and charge a power storage device; and
a modulator that modulates a voltage or current of the receiving antenna by changing a charging current of the charging circuit based on data to be transmitted to a wireless power transmitting device.
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Abstract
The wireless power receiving device includes a receiving antenna, a rectifier circuit connected to the receiving antenna, that generates a rectified voltage, a charging circuit to receive the rectified voltage and charge a power storage device, and a modulator that modulates a voltage or current of the receiving antenna by changing a charging current of the charging circuit based on data to be transmitted to a wireless power transmitting device.
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Citations
12 Claims
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1. A wireless power receiving device, comprising:
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a receiving antenna; a rectifier circuit connected to the receiving antenna, that generates a rectified voltage; a charging circuit to receive the rectified voltage and charge a power storage device; and a modulator that modulates a voltage or current of the receiving antenna by changing a charging current of the charging circuit based on data to be transmitted to a wireless power transmitting device. - View Dependent Claims (2, 3)
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4. A wireless power receiving device comprising:
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a receiving antenna; a rectifier circuit connected to the receiving antenna, that generates a rectified voltage; and a modulator that modulates a voltage or current of the receiving antenna by changing the current based on data to be transmitted to a wireless power transmitting device, the modulator being provided on a path of a current flowing from the rectifier circuit into a load. - View Dependent Claims (5)
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6. A receiver circuit for use in a wireless power receiving device together with a receiving antenna comprising:
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a rectifier circuit connected to the receiving antenna, that generates a rectified voltage; a charging circuit to receive the rectified voltage and charge a power storage device; and a modulator that modulates a voltage or current of the receiving antenna by changing a charging current of the charging circuit based on data to be transmitted to a wireless power transmitting device. - View Dependent Claims (7, 8, 9)
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10. A receiver circuit for use in a wireless power receiving device together with a receiving antenna comprising:
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a rectifier circuit connected to the receiving antenna, that generates a rectified voltage; and a modulator that modulates a voltage or current of the receiving antenna by changing an electric current based on data to be transmitted to a wireless power transmitting device, the modulator being provided on a path of a current flowing from the rectifier circuit into a load. - View Dependent Claims (11)
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12. A control method of a wireless power receiving device comprising:
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receiving a power signal at a receiving antenna, rectifying a current induced in the receiving antenna and generating a rectified voltage, charging a power storage device based on the rectified voltage, modulating a voltage or current of the receiving antenna by changing a charging current for a battery based on data to be transmitted to a wireless power transmitting device, and transmitting the data to the wireless power transmitting device.
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Specification