Apparatus for estimating the drowsiness level of a vehicle driver

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5786765
SERIAL NO

08840132

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ATTORNEY / AGENT: (SPONSORED)

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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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Patent Owner(s)

Patent OwnerAddressTotal Patents
MITSUBISHI JIDOSHA KOGYO K.K. (A.K.A. MITSUBISHI MOTORS CORPORATION)TOKYO759

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goi, Yoshihiro Anjo, JP 2 42
Hara, Toru Okazaki, JP 8 64
Kumakura, Sae Okazaki, JP 1 39

Cited Art Landscape

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Other [Check patent profile for assignment information] (1)
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Patent Citation Ranking

Forward Cite Landscape

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