Wireless charging interference mitigation
AssigneeApple Inc.
InventorsAdam L. Schwartz, Ron Rafer C. Floresca, Liang Chen, Zaki Moussaoui
Life of this patent
Estimating the term…
Abstract
An electronic device such as a portable electronic device has wireless power receiving circuitry. A vehicle has a vehicle remote keyless system that transmits beacons. A key receives the beacons and responds with key codes to unlock doors and enable a vehicle ignition in the vehicle. In the presence of wireless power transfer operations there is a risk that wireless power signals will interfere with the reception of the beacons by the key. To ensure that beacons are satisfactorily received, conditions in which there is a risk of interference are detected and corresponding interference mitigation operations are performed.
Claims24
An electronic device configured to transmit wireless power to wireless power receiving circuitry in a wireless power receiving device in or near a vehicle that has a vehicle remote keyless system configured to transmit vehicle remote keyless system beacons to a key and to receive wireless key signals from the key, the electronic device comprising:
- wireless power transmitting circuitry configured to transmit wireless power signals to the wireless power receiving circuitry to charge a battery in the wireless power receiving device;
- peak detector circuitry configured to measure a peak wireless signal magnitude at a beacon frequency associated with the vehicle remote keyless system beacons and a baseline wireless signal magnitude at the beacon frequency associated with the wireless power signals in an absence of communication between the vehicle remote keyless system and the key;
- and
- control circuitry configured to:
- detect a condition indicating that transmission of the wireless power signals will create interference with the vehicle remote keyless system beacons transmitted by the vehicle remote keyless system based on the peak and baseline wireless signal magnitudes;
- and
- mitigate the interference in response to detecting the condition.
An electronic device configured to transmit wireless power to wireless power receiving circuitry in a wireless power receiving device in or near a vehicle that has a vehicle remote keyless system configured to transmit vehicle remote keyless system beacons to a key and to receive wireless key signals from the key, the electronic device comprising:
- wireless power transmitting circuitry configured to transmit wireless power signals to the wireless power receiving circuitry to charge a battery in the wireless power receiving device;
- and
- control circuitry configured to:
- detect vehicle remote keyless system beacons transmitted by the vehicle remote keyless system indicating that transmission of the wireless power signals will create interference with the vehicle remote keyless system beacons;
- and
- mitigate the interference in response to detecting the condition by alternately adjusting the transmission of the wireless power signals between first and second modes in accordance with a duty cycle, wherein the second mode of transmission coincides with the vehicle remote keyless system beacons.
An electronic device configured to transmit wireless power to wireless power receiving circuitry in a wireless power receiving device in or near a vehicle that has a vehicle remote keyless system configured to transmit vehicle remote keyless system beacons to a key and to receive wireless key signals from the key, the electronic device comprising:
- wireless power transmitting circuitry configured to transmit wireless power signals to the wireless power receiving circuitry to charge a battery in the wireless power receiving device;
- and
- control circuitry configured to:
- detect a condition indicating that transmission of the wireless power signals will create interference with the vehicle remote keyless system beacons transmitted by the vehicle remote keyless system;
- and
- mitigate the interference in response to detecting the condition by adjusting the wireless power transmission by prompting user input and halting transmission of the wireless power signals in response to the user input.
Dependencies are inferred from the claim text.