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:
Apr. 30, 2013
Filed:
Jan. 12, 2010
Applicants:
Kenji Ishida, Nagoya, JP;
Satori Hachisuka, Nagoya, JP;
Inventors:
Kenji Ishida, Nagoya, JP;
Satori Hachisuka, Nagoya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drowsiness detector detects the drowsiness by measuring a distance of an eyebrow at three points from a reference line defined by an inner eye corner and an outer eye corner. The three distances of the eyebrow from the reference line are respectively standardized by an inter-eye distance between the inner eye corners of the left and right eyes, and are respectively compared with thresholds for determining the rise of the eyebrow. The rise of the eyebrow is then translated as the start of the drowsiness, and is associated with an operation such as a doze prevention operation or the like.