The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2026
Filed:
Jan. 30, 2025
Mazda Motor Corporation, Hiroshima, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
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 continuously gazes at the cautionary object, acquires a measured value of each of a gazing frequency and a gazing time, calculates an abnormality level of the driver based on a product of a difference between the actual measured value and the predicted value of the gazing frequency and a difference between the actual measured value and the predicted value of the gazing time, and estimates that the driver is in an inattentive state when the abnormality level is equal to or greater than a predetermined threshold.