ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,144, issued on April 29, was assigned to Murata Machinery Ltd. (Kyoto, Japan).
"Travelling vehicle and travelling vehicle system" was invented by Yuji Shimizu (Ise, Japan) and Seiji Yamagami (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A travelling vehicle includes a body including a small marker and a large marker, an imager, a pattern recognizer, and a state determiner. The large marker includes a display pattern including a first region, a second region with a lower reflectance than a reflectance of the first region, and a region where the small marker is located. The small marker has a display pattern including a third region with...