Patents by Inventor Hiroshi Tokutake
Hiroshi Tokutake 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: 10752299Abstract: A surface shape variable device which comprises a board-like member comprising a plurality of strip elements capable of being elastically morphed which extend in parallel along a plane; and morphing control devises which elastically morph the strip elements due to buckling and the like toward a direction traversing the plane by applying stress to at least a part of the strip elements, wherein the strip elements are woven into a woven fabric-like state and extend intersecting with each other.Type: GrantFiled: April 3, 2015Date of Patent: August 25, 2020Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITYInventors: Shinnosuke Shimokawa, Eiji Itakura, Hiroshi Tokutake, Atsumu Ohmae
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Patent number: 9658243Abstract: In a first arousal level estimation device according to this invention, an initial residual setup unit sets a residual to be a reference of a driver, i.e., a residual with a smallest value during an initialization period as an initial residual among residuals calculated by a residual calculation unit during the initialization period from timing of starting an operation of a vehicle or timing of a change in a traveling scene including a condition of traveling road of the vehicle as a starting point till a predetermined period of time elapses. An arousal level estimation unit estimates a driver's arousal level based on a result of comparison between the initial residual set by the residual setup unit and the residual calculated by the residual calculation unit after the initialization period has elapsed. In this way, an estimation accuracy relating to a driver's state including a driver's arousal level is improved.Type: GrantFiled: November 15, 2013Date of Patent: May 23, 2017Assignees: HONDA MOTOR CO., LTD., NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITYInventors: Tetsuro Shirakata, Yoichi Sugimoto, Hiroshi Tokutake
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Publication number: 20150284038Abstract: A surface shape variable device which comprises a board-like member comprising a plurality of strip elements capable of being elastically morphed which extend in parallel along a plane; and morphing control devises which elastically morph the strip elements due to buckling and the like toward a direction traversing the plane by applying stress to at least a part of the strip elements, wherein the strip elements are woven into a woven fabric-like state and extend intersecting with each other.Type: ApplicationFiled: April 3, 2015Publication date: October 8, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITYInventors: Shinnosuke SHIMOKAWA, Eiji ITAKURA, Hiroshi TOKUTAKE, Atsumu OHMAE
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Publication number: 20140142867Abstract: In a first arousal level estimation device according to this invention, an initial residual setup unit sets a residual to be a reference of a driver, i.e., a residual with a smallest value during an initialization period as an initial residual among residuals calculated by a residual calculation unit during the initialization period from timing of starting an operation of a vehicle or timing of a change in a traveling scene including a condition of traveling road of the vehicle as a starting point till a predetermined period of time elapses. An arousal level estimation unit estimates a driver's arousal level based on a result of comparison between the initial residual set by the residual setup unit and the residual calculated by the residual calculation unit after the initialization period has elapsed. In this way, an estimation accuracy relating to a driver's state including a driver's arousal level is improved.Type: ApplicationFiled: November 15, 2013Publication date: May 22, 2014Applicants: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY, HONDA MOTOR CO., LTD.Inventors: Tetsuro Shirakata, Yoichi Sugimoto, Hiroshi Tokutake
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Patent number: 8489253Abstract: A driver state assessment device is provided in which when driver model identification means (M2) identifies a driver model showing a driver's input/output relationship using a difference between a target azimuth and an actual azimuth as a driver's input and an actual steering angle as a driver's output, driver model amount of operation acquisition means (M3) acquires a driver model steering angle by inputting a current azimuth deviation into the driver model, and driver state assessment means (M4) calculates a difference between a current actual steering angle and a driver model steering angle as a residual error and assesses the driver's state based on the residual error. Therefore, since the residual error is an index that represents a fluctuation component, a noise component, a non-linear component, etc. obtained from the driver model, it is possible to assess, with high precision, the driver's state, in particular a low wakefulness state of the driver, based on this residual error.Type: GrantFiled: September 28, 2010Date of Patent: July 16, 2013Assignee: Honda Motor Co., Ltd.Inventors: Tetsuro Shirakata, Yoichi Sugimoto, Hiroshi Tokutake
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Publication number: 20120221171Abstract: A driver state assessment device is provided in which when driver model identification means (M2) identifies a driver model showing a driver's input/output relationship using a difference between a target azimuth and an actual azimuth as a driver's input and an actual steering angle as a driver's output, driver model amount of operation acquisition means (M3) acquires a driver model steering angle by inputting a current azimuth deviation into the driver model, and driver state assessment means (M4) calculates a difference between a current actual steering angle and a driver model steering angle as a residual error and assesses the driver's state based on the residual error. Therefore, since the residual error is an index that represents a fluctuation component, a noise component, a non-linear component, etc. obtained from the driver model, it is possible to assess, with high precision, the driver's state, in particular a low wakefulness state of the driver, based on this residual error.Type: ApplicationFiled: September 28, 2010Publication date: August 30, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Tetsuro Shirakata, Yoichi Sugimoto, Hiroshi Tokutake