CPC G06K 19/0723 (2013.01) [H02J 50/12 (2016.02); H02J 50/80 (2016.02); H02J 50/90 (2016.02)] | 13 Claims |
1. A method for wireless charging, comprising:
transmitting an interrogation signal configured to stimulate radio frequency identification (RFID) tags through a first radio interface that is provided in a wireless charger;
refraining from participating in wireless charging when a response to the interrogation signal is received; and
negotiating a charging configuration when no response to the interrogation signal is received, wherein the interrogation signal is transmitted when a chargeable device is initially placed on or near a surface of the wireless charger;
wherein the interrogation signal is transmitted through an antenna that is configured as a loop surrounding one or more coils of the wireless charger, and
wherein the one or more coils are configured to receive a charging current when the wireless charger is charging the chargeable device.
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