Patents by Inventor Ken IKUHISA

Ken IKUHISA 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).

  • Driver condition estimating device, driver condition estimating method and computer program therefor
    Patent number: 11318948
    Abstract: 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: Grant
    Filed: November 25, 2020
    Date of Patent: May 3, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Makoto Yoshida, Taro Iwamoto, Ken Ikuhisa, Yohei Iwashita
  • Driver condition estimating device, driver condition estimating method and computer program therefor
    Patent number: 11208109
    Abstract: 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: Grant
    Filed: November 25, 2020
    Date of Patent: December 28, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Makoto Yoshida, Taro Iwamoto, Ken Ikuhisa, Yohei Iwashita
  • DRIVER CONDITION ESTIMATING DEVICE, DRIVER CONDITION ESTIMATING METHOD AND COMPUTER PROGRAM THEREFOR
    Publication number: 20210276569
    Abstract: 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: Application
    Filed: November 25, 2020
    Publication date: September 9, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Makoto YOSHIDA, Taro IWAMOTO, Ken IKUHISA, Yohei IWASHITA
  • DRIVER CONDITION ESTIMATING DEVICE, DRIVER CONDITION ESTIMATING METHOD AND COMPUTER PROGRAM THEREFOR
    Publication number: 20210197833
    Abstract: 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: Application
    Filed: November 25, 2020
    Publication date: July 1, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Makoto YOSHIDA, Taro IWAMOTO, Ken IKUHISA, Yohei IWASHITA