ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,493,300, issued on Dec. 9, was assigned to Aichi Steel Corp. (Tokai, Japan).
"System and magnetic marker detection method" was invented by Michiharu Yamamoto (Tokai, Japan), Tomohiko Nagao (Tokai, Japan) and Hitoshi Aoyama (Tokai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A patrol robot including a plurality of magnetic sensors for detecting a magnetic marker laid on a traveling road has at least two or more magnetic sensors arrayed on a sensor array line linearly extending along any direction. In the patrol robot, two sensor array lines are formed, and since at least any one sensor array line can cross with respect to a relative moving direct...