ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,556,677, issued on Feb. 17, was assigned to GOOGLE LLC (Mountain View, Calif.).
"Online calibration of display alignment in a head-worn device" was invented by Joshua Anthony Hernandez (Redwood City, Calif.), Zhiheng Jia (Sunnyvale, Calif.), Chao Guo (Los Altos, Calif.) and Qiyue Zhang (Santa Clara, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for determining a transformation between frames of reference for two inertial measurement units (IMUs) is disclosed. The transformation includes biases associated with the measurements of each of the IMUs and the extrinsic details can include relative differences in the position and orientation o...