ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,554, issued on June 2, was assigned to MAZDA MOTOR Corp. (Hiroshima, Japan).
"Driver state estimation apparatus" was invented by Kengo Tanaka (Aki-gun, Japan), Satoru Takenaka (Aki-gun, Japan) and Koji Iwase (Aki-gun, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A driver state estimation apparatus includes a controller to estimate the driver's state based on travel environment and the driver's line of sight. The controller calculates a predicted gazing frequency of the driver to gaze at a cautionary object based on a relative risk, an observable time, and a speed of the vehicle, calculates a predicted gazing time in which the driver continuou...