ALEXANDRIA, Va., Jan. 23 -- United States Patent no. 12,190,609, issued on Jan. 7, was assigned to TUSIMPLE INC. (San Diego).

"Method and system for map construction" was invented by Minhao Jiang (San Diego), Hsin Lu (San Diego), Genmao Shi (San Diego) and Ziqi Liu (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of retrieving a map includes receiving a grid data of the map comprising lane segments, wherein the grid data includes an array of grids each associated with a list including none or at least one of the lane segments intersecting the respective grid; receiving coordinates of a location; identifying a first grid including the location based on the grid data; identifying a target gri...