US Patent No: 5,786,765

Number of patents in Portfolio can not be more than 2000

Apparatus for estimating the drowsiness level of a vehicle driver

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Abstract

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An apparatus for estimating a drowsiness level of a vehicle driver first prepares a frequency distribution of blink durations of the driver for a first predetermined period after the start of a driving operation, and sets a threshold value for a discrimination of slow blinks by the frequency distribution. Thereafter, the apparatus calculates, every second predetermined period, a ratio of the number of slow blinks to the total number of blinks of the driver's eyes during the second period, and discriminates a rise in the drowsiness level of the driver in accordance with the calculated ratio.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHATOKYO702

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goi, Yoshihiro Anjo, JP 2 41
Hara, Toru Okazaki, JP 6 60
Kumakura, Sae Okazaki, JP 1 38

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
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MAZDA MOTOR CORPORATION (1)
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MITSUBISHI DENKI KABUSHIKI KAISHA (2)
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Honeywell Inc. (1)
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SIEMENS CORPORATE RESEARCH, INC. (1)
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (7)
* 6,147,612 Dual function optic sleep preventing device for vehicle drivers 19 1999
7,336,804 Method and apparatus for detection of drowsiness and quantitative control of biological processes 10 2003
* 2004/0234,103 Method and apparatus for detection of drowsiness and quantitative control of biological processes 3 2003
* 7,258,441 Eye activity monitoring apparatus and system 0 2004
7,301,465 Drowsy driving alarm system 7 2005
7,680,302 Method and apparatus for detection of drowsiness and quantitative control of biological processes 0 2007
* 2008/0192,983 Method and apparatus for detection of drowsiness and quantitative control of biological processes 0 2007
 
CALLAO INVESTMENTS, LLC (1)
* 2004/0151,347 Face recognition system and method therefor 22 2003
 
L&P PROPERTY MANAGEMENT COMPANY (1)
8,957,779 Drowsy driver detection system 0 2010
 
PANASONIC CORPORATION (2)
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* 2014/0062,704 SLEEPINESS-ESTIMATING DEVICE AND SLEEPINESS-ESTIMATING METHOD 2 2012
 
OMRON CORPORATION (2)
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MURAKAMI CORPORATION (1)
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FUJI JUKOGYO KABUSHIKI KAISHA (6)
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UTECHZONE CO., LTD. (1)
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SPHERICON LTD. (1)
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7,639,148 Method and arrangement for controlling vehicular subsystems based on interpreted driver activity 25 2004
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TOYOTA JIDOSHA KABUSHIKI KAISHA (4)
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VOLVO TECHNOLOGY (CORPORATION) (3)
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Hyudai Motor Japan R&D Center, Inc. (1)
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3M INNOVATIVE PROPERTIES COMPANY (1)
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KIA MOTORS CORPORATION (1)
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8,570,176 Method and device for the detection of microsleep events 1 2008
 
Sleep Diagnostics Pty., Ltd (1)
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DENSO CORPORATION (3)
* 7,705,738 Database apparatus, attention calling apparatus and driving support apparatus 5 2008
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* 2011/0216,181 DROWSINESS DETERMINATION APPARATUS AND PROGRAM 2 2009
 
ADVANCED BRAIN MONITORING, INC. (2)
6,496,724 Method for the quantification of human alertness 56 1999
6,625,485 Method for the quantification of human alertness 29 2002
 
WILLIAM J. BROWN, ESQ., TRUSTEE FOR JOSEPH D. HARBAUGH (1)
* 6,717,518 Method and apparatus for detection of drowsiness 51 2001
 
DELPHI TECHNOLOGIES, INC. (7)
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UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC. (1)
6,927,694 Algorithm for monitoring head/eye motion for driver alertness with one camera 60 2002
 
PNI Corporation (1)
* 6,297,732 Radar/laser detection device with multi-sensing and reporting capability 55 1999
 
VOLVO CAR CORPORATION (1)
* 6,614,344 Optical sensor for an adjustable vehicle seating system 12 2000
 
FORD GLOBAL TECHNOLOGIES, LLC (2)
* 7,138,922 Drowsy driver monitoring and prevention system 11 2003
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COMPUMEDICS LIMITED (2)
* 8,096,946 Vigilance monitoring system 7 2003
* 2004/0044,293 Vigilance monitoring system 47 2003
* Cited By Examiner