ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,427, issued on May 27, was assigned to PIONEER Corp. (Tokyo).

"Map data generation device" was invented by Yuji Ito (Kawagoe, Japan), Toshiaki Inoue (Kawagoe, Japan), Koji Shibata (Kawagoe, Japan), Ryohei Kagawa (Kawagoe, Japan) and Wataru Onodera (Kawagoe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A point which requires visual attention is added to map data. A map data generation device acquires image data in which the outside is captured from a vehicle by an input device and a point data of the vehicle, associates both data, and generates a visual saliency map acquired by estimating fluctuation of visual saliency based on the image data...