Patent ID: 9318897
Filing Date: 2016-04-19
CPC Classification: H02J

Claim Text:
1. A method for reducing data corruption in a wireless power transmission system comprising: providing power from a power source to a transmitter; transmitting power from a primary coil in the transmitter to a secondary coil in a receiver by induction; rectifying a voltage induced on the secondary coil by the transmission of the power from the primary coil to the secondary coil; transmitting data from the receiver to the transmitter via backscatter modulation by varying a load across the secondary coil; continually measuring load current, storing a value representative of the measured load current, during the transmission of data from the receiver to the transmitter limiting a change in current through the receiver to a level within a predetermined value of the stored value of current just before a communication packet is sent utilizing a control circuit while the voltage is induced on the secondary coil, wherein the load continues to receive power during data transfer and interference with the data transfer is reduced.