SYSTEM AND METHOD FOR SAFE WIRELESS CHARGING STATION
First Claim
Patent Images
1. A wireless charging station, comprising:
- a transmitter to transmit one or more periodic A4WP beacons;
a detector to detect a response from an external device in response to the one or more A4WP beacons and to identify the response as one of a Bluetooth Low Energy (BLE) advertisement, a Near Field Communication (NFC) load modulation, an impedance change or a combination thereof; and
a controller including processing circuitry to dynamically configure a magnetic field for the identified external device.
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Abstract
The disclosure relates to a method, apparatus and system to wirelessly charge a device. In one embodiment, the disclosure relates to a wireless charging station having a detector to identify presence of a device at or near the charging station that would otherwise be damaged by the magnetic field of the wireless charging station. The detector detects a response signal emitted from the device under charge and determines whether to generate the desired magnetic field to charge the device or to cease the magnetic field to preserve the device from potential damage caused by the magnetic field.
34 Citations
27 Claims
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1. A wireless charging station, comprising:
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a transmitter to transmit one or more periodic A4WP beacons; a detector to detect a response from an external device in response to the one or more A4WP beacons and to identify the response as one of a Bluetooth Low Energy (BLE) advertisement, a Near Field Communication (NFC) load modulation, an impedance change or a combination thereof; and a controller including processing circuitry to dynamically configure a magnetic field for the identified external device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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- 8. An apparatus comprising a detector and a circuitry, the detector configured to detect presence of a proximal electronic device at or near a magnetic field from a modulated signal received from the external device, the modulated signal including one or more of a Bluetooth Low Energy (BLE) advertisement, a Near Field Communication (NFC) load modulation, an impedance change in magnetic field or a combination thereof.
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15. A method to detect presence of an external device proximal to a wireless charging station, the method comprising:
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transmitting one or more periodic A4WP beacons; detecting a response to the one or more periodic A4WP beacons from an external device and identifying the response as one of a Bluetooth Low Energy (BLE) advertisement, a Near Field Communication (NFC) load modulation, an impedance change or a combination thereof; and dynamically configuring a magnetic field to accommodate external device. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A non-transitory computer-readable storage device comprising a set of instructions to direct one or more processors associated with a wireless charging station to:
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transmit one or more periodic A4WP beacons; detect a response to the one or more periodic A4WP beacons from an external device and identify the response as one of a Bluetooth Low Energy (BLE) advertisement, a Near Field Communication (NFC) load modulation, an impedance change or a combination thereof; and dynamically configure a magnetic field to accommodate external device. - View Dependent Claims (23, 24, 25)
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26. A method to detect presence of an Near Field Communication (NFC)/RFID device proximal to a wireless charging station, the method comprising:
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transmitting NFC-like polls having a carrier frequency of about 6.78 MHz; detecting a response to the NFC-like polls, the response comprising by an NFC load modulation, and dynamically configuring a magnetic field generated by the charging station to accommodate the NFC/RFID device. - View Dependent Claims (27)
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Specification