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:
Jan. 01, 2013
Filed:
Aug. 01, 2008
Yoshiyuki Hatakeyama, Susono, JP;
Yoshiyuki Hatakeyama, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
The object is to provide a drowsiness detecting device for detecting strong drowsiness to become a dozing state. A drowsiness detecting device comprises a sympathetic parameter acquiring unit for acquiring a parameter concerning a sympathetic nerve of a subject, a parasympathetic parameter acquiring unit for acquiring a parameter concerning a parasympathetic nerve of the subject, a sympathetic increase determining unit for determining whether the sympathetic parameter is greater than a sympathetic threshold or not, and a drowsiness determining unit for determining drowsiness of the subject according to an increase/decrease relationship between the sympathetic and parasympathetic parameters when the sympathetic increase determining unit determines that the sympathetic parameter is greater than the sympathetic threshold.