Wireless power transmitter, wireless power receiver, and control methods thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsKyung-Woo LEE, Sang-Wook KWON, Sung-Kweon PARK
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Abstract
A wireless power transmitter, a wireless power receiver, and control methods thereof are provided. The wireless power transmitter includes a Near-Field Communication (NFC) antenna for NFC, a power supply, a NFC module, a resonator that wirelessly transmits power to a wireless power receiver, and a controller that controls the power supply to apply a beacon power for detecting an impedance change that is caused by placement of the wireless power receiver on the wireless power transmitter, to the resonator during a first time period, and controls the NFC module to apply NFC tag detection power to the NFC antenna during a second time period.
Claims28
A wireless power transmitter comprising:
- a Near-Field Communication (NFC) antenna for NFC;
- a power supply;
- a NFC module;
- a resonator that wirelessly transmits power to a wireless power receiver;
- and
- a controller that:
- controls the power supply to apply a beacon power for detecting an impedance change that is caused by placement of the wireless power receiver on the wireless power transmitter, to the resonator during a first time period, and
- controls the NFC module to apply NFC tag detection power to the NFC antenna during a second time period.
A wireless power receiver comprising:
- a communication module;
- a Near-Field Communication (NFC) antenna for NFC;
- and
- a controller that:
- controls the NFC antenna to detect an external NFC tag, and
- controls the communication module to transmit, to a wireless power transmitter, a signal including information on the detection of the external NFC tag or information on whether the external NFC tag is protected from wireless charging, when the external NFC tag is detected.
A control method of a wireless power transmitter, the control method comprising:
- applying a beacon power for detecting an impedance change that is caused by placement of the wireless power receiver on the wireless power transmitter, to a resonator of the wireless power transmitter during a first time period;
- and
- applying NFC tag detection power to a Near-Field Communication (NFC) antenna for NFC during a second time period.
A control method of a wireless power receiver, the control method comprising:
- controlling a Near-Field Communication (NFC) antenna of the wireless power receiver to detect an external NFC tag;
- and
- transmitting, to a wireless power transmitter, a signal including information on the detection of the external NFC tag, when the external NFC tag is detected.
Dependencies are inferred from the claim text.