Inventor
UM KOOHYUN
US10 patents
Patents
10 patentsUS10305766B1May 28, 2019
Coexistence-insensitive presence detection
AMAZON TECH INC60 citations97
US9590298B1Mar 7, 2017
Orientation of directional antennas
AMAZON TECH INC37 citations94
US10310079B1Jun 4, 2019
Presence detection using wireless signals confirmed with ultrasound and/or audio
AMAZON TECH INC23 citations93
US11271629B1Mar 8, 2022
Human activity and transition detection
AMAZON TECH INC18 citations85
US10674331B1Jun 2, 2020
Indoor location estimation for wireless device
AMAZON TECH INC20 citations85
US9698857B1Jul 4, 2017
Pattern diversity assisted single-input-single-output and two-by-two multiple-input-multiple output (MIMO) antenna systems
AMAZON TECH INC9 citations82
US10771939B1Sep 8, 2020
Orientation of directional antennas using horizontal position information
AMAZON TECH INC2 citations73
US11925447B1Mar 12, 2024
Out-of-bed zone generation and monitoring associated with respiratory activity tracking
AMAZON TECH INC1 citations60
US10149115B1Dec 4, 2018
Orientation of directional antennas using horizontal position information
AMAZON TECH INC0 citations52
US11793425B1Oct 24, 2023
Phase disambiguation for radar-based breathing measurements
AMAZON TECH INC0 citations49