ALEXANDRIA, Va., April 21 -- United States Patent no. 12,608,843, issued on April 21, was assigned to DENSO Corp. (Kariya-city, Japan), TOYOTA JIDOSHA K.K. (Toyota, Japan) and MIRISE Technologies Corp. (Nisshin, Japan).

"Self-position estimation device" was invented by Akira Tokuse (Nisshin, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A self-position estimation device is adapted to a movable object having a camera and a communication device. The camera takes an image of surrounding of the movable object. The self-position estimation device includes a feature acquisition unit, a scale calculation unit, and a self-position estimation unit. The feature acquisition unit acquires an image feature point. ...