ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,536,699, issued on Jan. 27, was assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (Daejeon, South Korea).

"Precise positioning method, apparatus and system using multi-source data matching map image" was invented by Ju Il Jeon (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a positioning method including: obtaining, by a device for providing a positioning function, multi-source wireless signal data from a collection data database (DB); generating, by the device, a matching map using the multi-source wireless signal data; generating, by the device, a matching map image corresponding to the matching map; ...