Patents by Inventor Yohei IWASHITA
Yohei IWASHITA 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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Publication number: 20240101122Abstract: A driver pre-abnormal detection apparatus includes: sensors to acquire travel environment information of a vehicle; an in-vehicle camera that detects the driver's sightline; and a controller configured to detect a driver's pre-abnormal state based on the travel environment information and the driver's sightline. The controller identifies a visual recognition required point to be visually recognized by the driver based on the travel environment information, determines whether the driver has visually recognized the visual recognition required point based on the driver's sightline, and detects the driver's pre-abnormal state based on a fact that the driver has not visually recognized the visual recognition required point.Type: ApplicationFiled: March 27, 2023Publication date: March 28, 2024Applicant: Mazda Motor CorporationInventors: Akiko FUKUI, Koji IWASE, Yohei IWASHITA
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Publication number: 20240101124Abstract: A controller acquires a driving load score based on the travel environment information, acquires a distracted state occurrence score based on the driving load score and an elapsed time with the driving load score, acquires a search behavior score based on the travel environment information and the driver's sightline when the distracted state occurrence score is equal to or higher than a specified value, acquires a distracted state level of the driver based on the search behavior score and an elapsed time with the search behavior score, and determines that the driver is in the distracted state when the distracted state level is equal to or higher than a threshold and the search behavior score is increased in response to an increase in the driving load score.Type: ApplicationFiled: March 24, 2023Publication date: March 28, 2024Applicant: Mazda Motor CorporationInventors: Koji IWASE, Yohei IWASHITA
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Publication number: 20240104945Abstract: A driver state determination apparatus includes: an in-vehicle camera detecting a driver's sightline and head behavior; and a controller configured to determine the driver's state based on the driver's sightline and head behavior. When the driver is in an abnormal state based on the driver's sightline movement, the controller determines whether or not the driver's abnormal state a visual field impairment based on a change in each of a yaw angle and a pitch angle of the driver's head. When the abnormal state is the visual field impairment, the controller determines that the driver is aware of the visual field impairment when there is a direction in which the driver's sightline is not directed in the driver's field of view, and unaware of the visual field impairment when there is no direction in which the driver's sightline is not directed in the driver's field of view.Type: ApplicationFiled: March 27, 2023Publication date: March 28, 2024Applicant: Mazda Motor CorporationInventors: Akiko FUKUI, Yohei IWASHITA, Koji IWASE, Satoru TAKENAKA, Daiki IZUMOTO
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Patent number: 11603104Abstract: [Solution] A driver abnormality determination system includes circuitry configured to detect a driving operation of a driver, detect behavior of the driver's head and motion of eyeballs and/or movement of a sightline of the driver, recognize a driving scene in which the vehicle is driven; a memory that stores a sensor table of a relationship between the driving scene and detected values to be used to determine a driver abnormality; and determine the driver abnormality based on the sensor table, the driving scene, the driving operation and the behavior.Type: GrantFiled: March 11, 2021Date of Patent: March 14, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Koji Iwase, Makoto Yoshida, Junichiro Kuwahara, Yohei Iwashita
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Publication number: 20220371625Abstract: A vehicle control apparatus operates in various modes, e.g., a normal mode in which plural travel functions of a vehicle are controlled by plural driving functions of a driver; an automatic mode in which all driving functions are performed by the vehicle; an optimization mode in which, when a temporary reduction of driving performance of any of the plural driving functions of the driver is detected, physical stimulation and/or information that makes the driver recognize the temporary reduction of the driving performance is provided to the driver; and an assistance mode in which, when a chronic reduction of the driving performance of any of the plural driving functions of the driver is detected, information on assistance with execution of the driving performance is provided to the driver.Type: ApplicationFiled: May 18, 2022Publication date: November 24, 2022Applicant: Mazda Motor CorporationInventors: Takahiro TOCHIOKA, Yasunori YAMAMOTO, Yohei IWASHITA, Yoshitaka FUJIHARA, Takashi SUGANO
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Patent number: 11427208Abstract: A driver state determination apparatus includes circuitry configured to recognize whether a driver's voluntary function works normally and to recognize whether an involuntary function works normally. On condition that the driver's voluntary function does not work normally, the circuitry is configured to reduce a specified time required to recognize whether the involuntary function works normally.Type: GrantFiled: September 29, 2020Date of Patent: August 30, 2022Assignee: MAZDA MOTOR CORPORATIONInventor: Yohei Iwashita
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Driver condition estimating device, driver condition estimating method and computer program therefor
Patent number: 11318948Abstract: A driver condition estimating device includes circuitry configured to measure movement of the head of a driver output from a driver camera that photographs the driver and detect a sign of abnormality of the driver from the movement of the head. The circuitry determines existence of the sign of abnormality of the driver by calculating a periodic feature amount from time series data showing movement of the head of the driver, calculating coherence between the movement of the head of the driver and lateral acceleration acting on the head of the driver, calculating time series variation patterns from the obtained periodic feature amount and the obtained coherence, and comparing the obtained time series variation patterns with a predetermined threshold.Type: GrantFiled: November 25, 2020Date of Patent: May 3, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Makoto Yoshida, Taro Iwamoto, Ken Ikuhisa, Yohei Iwashita -
Driver condition estimating device, driver condition estimating method and computer program therefor
Patent number: 11208109Abstract: A driver condition estimating device includes circuitry configured to measure movement of the head of a driver from output of a driver camera and detect a sign of abnormality of the driver from the movement of the head. On condition that lateral acceleration acting on the head of the driver is a predetermined value or less, the circuitry is configured to calculate a periodic feature amount from time series data showing the movement of the head of the driver, calculate a time series variation pattern from the obtained periodic feature amount, and compare of the obtained time series variation pattern with a predetermined threshold.Type: GrantFiled: November 25, 2020Date of Patent: December 28, 2021Assignee: MAZDA MOTOR CORPORATIONInventors: Makoto Yoshida, Taro Iwamoto, Ken Ikuhisa, Yohei Iwashita -
Publication number: 20210316737Abstract: A driver abnormality determination apparatus includes circuitry configured to detect a driver state of a driver of a vehicle, detect a driving operation of the driver, detect an exertion level of an involuntary function of the driver based on the driver state, detect an exertion level of a driving function of the driver based on the driving operation; and determine driver abnormality based on the execution level of the involuntary function and the execution level of the driving function. On condition that a function level of one of the execution level of the involuntary function and the execution level of the driving function is equal to or lower than a specified determination criterion, the circuitry is configured to relax a determination criterion for the other function level.Type: ApplicationFiled: March 11, 2021Publication date: October 14, 2021Applicant: Mazda Motor CorporationInventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
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Publication number: 20210316738Abstract: [Solution] A driver abnormality determination system includes circuitry configured to detect a driving operation of a driver, detect behavior of the driver's head and motion of eyeballs and/or movement of a sightline of the driver, recognize a driving scene in which the vehicle is driven; a memory that stores a sensor table of a relationship between the driving scene and detected values to be used to determine a driver abnormality; and determine the driver abnormality based on the sensor table, the driving scene, the driving operation and the behavior.Type: ApplicationFiled: March 11, 2021Publication date: October 14, 2021Applicant: Mazda Motor CorporationInventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
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Publication number: 20210316736Abstract: The driver abnormality determination apparatus includes circuitry configured to detect a driver state of a driver of a vehicle, recognize a driving scene of the vehicle based on external environment information, and detect a state of an involuntary function of the driver, detect a state of a base function that serves as the basis of a driving operation by the driver, detect a state of a predictive driving function of the driver, and detect an abnormality of the driver based on the states each of the involuntary function, the base function, the predictive function, and a determination function based on a detection target item.Type: ApplicationFiled: March 11, 2021Publication date: October 14, 2021Applicant: Mazda Motor CorporationInventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
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DRIVER CONDITION ESTIMATING DEVICE, DRIVER CONDITION ESTIMATING METHOD AND COMPUTER PROGRAM THEREFOR
Publication number: 20210276569Abstract: A driver condition estimating device includes circuitry configured to measure movement of the head of a driver output from a driver camera that photographs the driver and detect a sign of abnormality of the driver from the movement of the head. The circuitry determines existence of the sign of abnormality of the driver by calculating a periodic feature amount from time series data showing movement of the head of the driver, calculating coherence between the movement of the head of the driver and lateral acceleration acting on the head of the driver, calculating time series variation patterns from the obtained periodic feature amount and the obtained coherence, and comparing the obtained time series variation patterns with a predetermined threshold.Type: ApplicationFiled: November 25, 2020Publication date: September 9, 2021Applicant: Mazda Motor CorporationInventors: Makoto YOSHIDA, Taro IWAMOTO, Ken IKUHISA, Yohei IWASHITA -
DRIVER CONDITION ESTIMATING DEVICE, DRIVER CONDITION ESTIMATING METHOD AND COMPUTER PROGRAM THEREFOR
Publication number: 20210197833Abstract: A driver condition estimating device includes circuitry configured to measure movement of the head of a driver from output of a driver camera and detect a sign of abnormality of the driver from the movement of the head. On condition that lateral acceleration acting on the head of the driver is a predetermined value or less, the circuitry is configured to calculate a periodic feature amount from time series data showing the movement of the head of the driver, calculate a time series variation pattern from the obtained periodic feature amount, and compare of the obtained time series variation pattern with a predetermined threshold.Type: ApplicationFiled: November 25, 2020Publication date: July 1, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Makoto YOSHIDA, Taro IWAMOTO, Ken IKUHISA, Yohei IWASHITA -
DRIVER CONDITION ESTIMATING DEVICE, DRIVER CONDITION ESTIMATING METHOD AND COMPUTER PROGRAM THEREFOR
Publication number: 20210201059Abstract: A driver condition estimating device includes circuitry configured to measure movement of the head of a driver from output of a driver camera and detect a sign of abnormality of the driver from the movement of the head. The circuitry is configured to calculate a periodic feature amount from time series data showing the movement of the head of the driver, calculate a time series variation pattern from the obtained periodic feature amount, and compare the obtained time series variation pattern with a predetermined threshold to determine existence of the sign of abnormality of the driver.Type: ApplicationFiled: November 25, 2020Publication date: July 1, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Taro IWAMOTO, Yohei IWASHITA, Makoto YOSHIDA -
Publication number: 20210107493Abstract: A driver state determination apparatus includes circuitry configured to recognize whether a driver's voluntary function works normally and to recognize whether an involuntary function works normally. On condition that the driver's voluntary function does not work normally, the circuitry is configured to reduce a specified time required to recognize whether the involuntary function works normally.Type: ApplicationFiled: September 29, 2020Publication date: April 15, 2021Applicant: Mazda Motor CorporationInventor: Yohei IWASHITA
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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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Patent number: 10338583Abstract: Disclosed herein is a technique for providing driving assistance for a driver in such a way as to increase the driver's degree of internal focus on driving if his or her degree of internal focus on driving is estimated to be low when deactivation of autonomous driving is predicted. Examples of such driving assistance include boosting the moving vehicle noise to be heard inside the vehicle's cabin, increasing sensitivity to a change in the vehicle's state responsive to driving operations, providing navigation to a road with features that would entertain the driver through driving, and giving guidance in exemplary driving operations.Type: GrantFiled: February 24, 2017Date of Patent: July 2, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Junichiro Kuwahara, Yohei Iwashita, Yoko Hoshino, Ryohei Hisamitsu, Hitomi Nakazato