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:
Oct. 16, 2001
Filed:
Jul. 14, 2000
Patrick Pirim, Paris, FR;
Holding B.E.V. S.A., Luxembourg, US;
Abstract
The invention relates to a method and device using an optoelectronic sensor in combination with an electronic unit arranged inside a motor vehicle. The sensor is adjusted in line with the head of the driver sitting in said motor vehicle at the same time as the inner rear-view mirror, which comprises a one-way mirror behind which the sensor is positioned. After detecting the presence of a driver seated in the motor vehicle they frame first the whole face and then the eyes of the driver in the video signal raser emitted by the sensor aided by the electronic unit and then determine the successive durations of blinking episodes, which are compared with a limit value situated between one duration typical of an awake person and another duration typical of a drowsy person. A signal (transmitted by an alram unit) suitable for waking the driver is triggered when the duration of blinking exeeds the limit.