Patents by Inventor Youichiro Nakahata
Youichiro Nakahata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10919535Abstract: An operator state determining device is provided, which includes an image pick-up device disposed inside a vehicle cabin, and configured to image an operator from the side, a torso angle detector configured to detect an operator's torso angle, a posture measuring module configured to measure a head-pitch angle change that is a difference between a head-pitch angle of the operator before the operator becomes unconscious and a head-pitch angle of the operator after the operator becomes unconscious, based on the image, a memory configured to store a given turnout angle and a given head-pitch angle change, and an abnormality determining module configured to determine an operator's abnormality. The abnormality determining module determines that the operator is in an abnormal state when an initial torso angle before becoming unconscious is inclined rearward more than the turnout angle, and the head-pitch angle change is greater than the given head-pitch angle change.Type: GrantFiled: March 27, 2019Date of Patent: February 16, 2021Assignee: Mazda Motor CorporationInventors: Youichiro Nakahata, Yohei Iwashita
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Patent number: 10588549Abstract: A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle includes a vehicle detector configured to detect a change in motion of the vehicle during driving, a driver detector configured to detect a change in motion of a head of the driver, and a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, based on the change in motion of the head of the driver with respect to the change in motion of the vehicle during driving.Type: GrantFiled: August 22, 2017Date of Patent: March 17, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Youichiro Nakahata, Yohei Iwashita, Junichiro Kuwahara, Ryohei Hisamitsu
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Patent number: 10561356Abstract: A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle, includes: a vehicle detector configured to detect a change in motion of the vehicle during driving; a driver detector configured to detect a change in motion of the driver; a calculator configured to calculate a follow-up degree of the change in motion of the driver with respect to the change in motion of the vehicle during driving; and a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, based on the follow-up degree.Type: GrantFiled: August 22, 2017Date of Patent: February 18, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Youichiro Nakahata, Yohei Iwashita, Junichiro Kuwahara, Ryohei Hisamitsu
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Publication number: 20190300000Abstract: An operator state determining device is provided, which includes an image pick-up device disposed inside a vehicle cabin, and configured to image an operator from the side, a torso angle detector configured to detect an operator's torso angle, a posture measuring module configured to measure a head-pitch angle change that is a difference between a head-pitch angle of the operator before the operator becomes unconscious and a head-pitch angle of the operator after the operator becomes unconscious, based on the image, a memory configured to store a given turnout angle and a given head-pitch angle change, and an abnormality determining module configured to determine an operator's abnormality. The abnormality determining module determines that the operator is in an abnormal state when an initial torso angle before becoming unconscious is inclined rearward more than the turnout angle, and the head-pitch angle change is greater than the given head-pitch angle change.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Inventors: Youichiro Nakahata, Yohei Iwashita
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Publication number: 20180056863Abstract: A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle includes a vehicle detector configured to detect a change in motion of the vehicle during driving, a driver detector configured to detect a change in motion of a head of the driver, and a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, based on the change in motion of the head of the driver with respect to the change in motion of the vehicle during driving.Type: ApplicationFiled: August 22, 2017Publication date: March 1, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Youichiro NAKAHATA, Yohei IWASHITA, Junichiro KUWAHARA, Ryohei HISAMITSU
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Publication number: 20180055438Abstract: A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle, includes: a vehicle detector configured to detect a change in motion of the vehicle during driving; a driver detector configured to detect a change in motion of the driver; a calculator configured to calculate a follow-up degree of the change in motion of the driver with respect to the change in motion of the vehicle during driving; and a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, based on the follow-up degree.Type: ApplicationFiled: August 22, 2017Publication date: March 1, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Youichiro NAKAHATA, Yohei IWASHITA, Junichiro KUWAHARA, Ryohei HISAMITSU
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Patent number: 9618615Abstract: A vehicle obstacle detection device comprises: a radar unit provided between a back surface of a bumper and a wheel and configured to detect an obstacle by transmitting a radio wave through the bumper; and a misdetection prevention member for preventing misdetection in the radar unit by suppressing the occurrence of an own-vehicle's wheel reaching wave which is a part of a transmission wave and which passes between a transmitter section of the radar unit and the back surface of the bumper and reaches the wheel of the own vehicle.Type: GrantFiled: April 6, 2012Date of Patent: April 11, 2017Assignee: MAZDA MOTOR CORPORATIONInventors: Takahiro Inada, Yasushi Hamada, Marie Tsurunaga, Youichiro Nakahata, Yoshitsugu Hanada, Fumihiko Nishida, Yasuyuki Endo
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Publication number: 20140070982Abstract: A vehicle obstacle detection device comprises: a radar unit provided between a back surface of a bumper and a wheel and configured to detect an obstacle by transmitting a radio wave through the bumper; and a misdetection prevention member for preventing misdetection in the radar unit by suppressing the occurrence of an own-vehicle's wheel reaching wave which is a part of a transmission wave and which passes between a transmitter section of the radar unit and the back surface of the bumper and reaches the wheel of the own vehicle.Type: ApplicationFiled: April 6, 2012Publication date: March 13, 2014Applicant: MAZDA MOTOR CORPORATIONInventors: Takahiro Inada, Yasushi Hamada, Marie Tsurunaga, Youichiro Nakahata, Yoshitsugu Hanada, Fumihiko Nishida, Yasuyuki Endo