ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,266, issued on Jan. 13, was assigned to HITACHI LTD. (Tokyo).
"Train control system" was invented by Kenji Imamoto (Tokyo) and Jun Koike (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A train control system includes: a sensor unit; a linear feature configured such that sensor information acquired by the sensor unit includes characteristic information and installed on a track where a train travels; a feature recognition unit calculating a difference value between first sensor information and second sensor information by comparison between the first sensor information acquired during forward monitoring by the sensor unit and the second sensor i...