ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,288, issued on June 30, was assigned to Hitachi Ltd. (Tokyo).

"Obstacle detection system using multiple processors" was invented by Atsushi Oda (Tokyo), Jun Koike (Tokyo) and Keiichi Katsuta (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the invention is to reduce a calculation performance required for an obstacle detection device while maintaining an obstacle detection range in a wide range in an obstacle detection system where external sensor data mounted in a track transport system is used. Therefore, in the invention, an obstacle detection system includes: an external sensor configured to monitor surroundings of a train; and ...