ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,426,754, issued on Sept. 30, was assigned to SAMSUNG ELECTRONICS Co. Ltd. (Suwon-si, South Korea).

"Cleaning robot and controlling method thereof" was invented by Jaeyoon Jeong (Suwon-si, South Korea), Hyoungjin Lee (Suwon-si, South Korea), Dohyeong Hwang (Suwon-si, South Korea), Minwoo Ryu (Suwon-si, South Korea), Sangsik Yoon (Suwon-si, South Korea) and Donghun Lee (Suwon-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A controlling method of a cleaning robot is provided. The controlling method includes obtaining lidar data while a lidar sensor rotates multiple times, calculating a reference value which is the average value of distance...