US 12,456,887 B2
Method for wireless charging and communication via clamping pulses
Hongxuan Zhang, Austin, TX (US); Li Sun, Plano, TX (US); and Luis Ortiz Hernandez, Dallas, TX (US)
Assigned to Advanced Neuromodulation Systems, Inc., Plano, TX (US)
Filed by Advanced Neuromodulation Systems, Inc., Plano, TX (US)
Filed on Jun. 21, 2021, as Appl. No. 17/353,768.
Prior Publication US 2022/0407366 A1, Dec. 22, 2022
Int. Cl. H02J 50/80 (2016.01); A61N 1/378 (2006.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01); H02J 50/10 (2016.01); H04L 27/156 (2006.01)
CPC H02J 50/80 (2016.02) [A61N 1/3787 (2013.01); H02J 7/0047 (2013.01); H02J 7/02 (2013.01); H02J 50/10 (2016.02); H04L 27/156 (2013.01); H04L 27/1563 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of operation of a wireless charger device, the method comprising:
transmitting a wireless charging signal to a receiver device;
receiving a clamping pulse from the receiver device based on the wireless charging signal, wherein the clamping pulse indicates a first value associated with a falling edge of the clamping pulse and further indicates a second value associated with a rising edge of the clamping pulse;
detecting the clamping pulse based on a comparison of a first threshold with the first value and further based on a comparison of a second threshold with the second value, wherein the second threshold is different than the first threshold,
wherein determining the first threshold and the second threshold includes:
during a first window of a first duration, performing one or more first measurements of an output signal used to generate the wireless charging signal;
during a second window of a second duration greater than the first duration, performing one or more second measurements of the output signal;
based on the one or more first measurements, determining one or more first parameters associated with the output signal;
based on the one or more second measurements, determining one or more second parameters associated with the output signal;
configuring the first threshold based on the one or more first parameters; and
configuring the second threshold based on the one or more second parameters; and
determining a charging state of the receiver device based on the clamping pulse.