US 11,742,698 B2
Systems and methods for wireless charger docking
Henri Antero Autio, Redmond, WA (US); Ibrahim Iskender Kushan, Seattle, WA (US); Carl Edward Picciotto, Clyde Hill, WA (US); Daniel Thomas Nevistic, Bellevue, WA (US); and Oscar Hochun To, Seattle, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Jan. 15, 2020, as Appl. No. 16/743,785.
Claims priority of provisional application 62/908,414, filed on Sep. 30, 2019.
Prior Publication US 2021/0099014 A1, Apr. 1, 2021
Int. Cl. H02J 50/10 (2016.01); H04B 5/00 (2006.01); H02J 50/80 (2016.01); H02J 7/02 (2016.01)
CPC H02J 50/10 (2016.02) [H02J 7/02 (2013.01); H02J 50/80 (2016.02); H04B 5/0037 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of adapting charging for an accessory device, the method comprising:
at a charging device:
transmitting a first power signal with a first transmission amplitude;
measuring a receiving load of the first power signal;
determining based on the measured receiving load whether a response signal is received from the accessory device; and
if the charging device does not receive the response signal, transmitting a second power signal at a second transmission amplitude that is lower than the first transmission amplitude so as to reduce potential magnetic saturation.