ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,474, issued on Feb. 24, was assigned to NEC Corp. (Tokyo).

"Laid state identifying system, laid state identifying apparatus, and laid state identifying method" was invented by Shinya Kamada (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A laid state identifying system (1) according to the present disclosure includes: an optical fiber (10) laid in a road (30) and configured to detect vibration generated by traveling of a vehicle (40) on the road (30); a vibration information acquiring unit (21) configured to receive an optical signal from the optical fiber (10) and acquire, from the optical signal, vibration information indicating the vibratio...