ALEXANDRIA, Va., July 16 -- United States Patent no. 12,670,725, issued on June 30, was assigned to Nissan Motor Co. Ltd. (Yokohama, Japan).

"Speed limit recognition method and speed limit recognition device" was invented by Kazuyuki Uwabo (Kanagawa, Japan) and Yasuhisa Taira (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A speed limit recognition method recognizes a speed limit sign from the captured image, determines whether or not a plurality of speed limit signs are recognized from the captured image, when determining that a plurality of speed limit signs are recognized, determines whether or not the plurality of speed limit signs include speed limit signs respectively existing in right ...