Patents by Inventor Tsukasa Ogasawara
Tsukasa Ogasawara 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: 11276194Abstract: Provided are a method and a device that can efficiently generate a training dataset.Type: GrantFiled: March 28, 2019Date of Patent: March 15, 2022Assignee: National University Corporation Nara Institute of Science and TechnologyInventors: Keita Tomochika, Takuya Kiyokawa, Tsukasa Ogasawara, Jun Takamatsu, Ming Ding
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Publication number: 20210012524Abstract: Provided are a method and a device that can efficiently generate a training dataset.Type: ApplicationFiled: March 28, 2019Publication date: January 14, 2021Inventors: Keita TOMOCHIKA, Takuya KIYOKAWA, Tsukasa OGASAWARA, Jun TAKAMATSU, Ming DING
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Patent number: 8641114Abstract: A robot hand which can be formed in the shape of a human hand and improves maintenance performance, and generates fingertip force is provided. A robot hand (1) of the present invention is provided with a hand section (3) and an arm section (5). The hand section (3) corresponds to the portion of a human hand which is forward from the wrist thereof. The arm section (5) is provided with a drive device (d5) including a plurality of motors and generates driving torque for driving each movable section of the hand section (3). The hand section (3) and the arm section (5) are configured in such a manner that a group (g36) of wrist-mounted pulleys which are first driving torque transmitting members coaxially arranged and a group (r5) of arm pulleys which are second driving torque transmitting members coaxially arranged transmit driving torque generated by the drive device (d5) to each movable section of the hand section (3) via gears meshing with each other.Type: GrantFiled: December 3, 2009Date of Patent: February 4, 2014Assignee: National University Corporation Nara Institute of Science and TechnologyInventors: Yuichi Kurita, Atsutoshi Ikeda, Yasuhiro Ono, Tsukasa Ogasawara
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Publication number: 20110241368Abstract: A robot hand which can be formed in the shape of a human hand and improves maintenance performance, and generates fingertip force is provided. A robot hand (1) of the present invention is provided with a hand section (3) and an arm section (5). The hand section (3) corresponds to the portion of a human hand which is forward from the wrist thereof. The arm section (5) is provided with a drive device (d5) including a plurality of motors and generates driving torque for driving each movable section of the hand section (3). The hand section (3) and the arm section (5) are configured in such a manner that a group (g36) of wrist-mounted pulleys which are first driving torque transmitting members coaxially arranged and a group (r5) of arm pulleys which are second driving torque transmitting members coaxially arranged transmit driving torque generated by the drive device (d5) to each movable section of the hand section (3) via gears meshing with each other.Type: ApplicationFiled: December 3, 2009Publication date: October 6, 2011Inventors: Yuichi Kurita, Atsutoshi Ikeda, Yasuhiro Ono, Tsukasa Ogasawara
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Patent number: 7981059Abstract: In one embodiment of the present invention, a driving force calculating device calculates a driving force so that a desired load is applied on a muscle while a power assisting device assists and/or resists a predetermined motion. A driving force calculating section of a driving force calculating device calculates a driving force of each driving section according to a joint torque table on joint torque necessary for a rotational motion and an assigned muscle force table on an assigned muscle force input to a muscle force input section. For the calculation is used a muscle/artificial muscle integrated model data integrally including musculoskeletal model data on a musculoskeletal model of a human and artificial muscle model data on an artificial muscle model of the power assisting device. The driving force is calculated through optimization using Crowninshield performance function under constraint conditions of the joint torque and the assigned muscle force.Type: GrantFiled: August 4, 2005Date of Patent: July 19, 2011Assignee: National University Corporation Nara Institute of Science and TechnologyInventors: Jun Ueda, Tsukasa Ogasawara
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Patent number: 7591166Abstract: A tactile sensor of an embodiment of the present invention includes: a sensing section having an elastic member at a portion which contacts a measurement target; an image acquiring section for acquiring as image information the state of a contact surface of the measurement target and the elastic member, before and after application of an external force tangential to the contact surface; a deformation analyzing section for analyzing deformation information of the contact surface, based on the image information acquired by the image acquiring section; an external force detecting section for detecting the external force applied tangential to the contact surface; and an estimating section for estimating a slippage margin between the measurement target and the elastic member, based on (I) the deformation information of the contact surface, which information acquired by the deformation analyzing section, (II) the external force detected by the external force detecting section, and (III) an object constant of the elType: GrantFiled: June 16, 2005Date of Patent: September 22, 2009Assignee: National University Corporation Nara Institute of Science and TechnologyInventors: Jun Ueda, Yutaka Ishida, Tsukasa Ogasawara
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Patent number: 7529632Abstract: A driving force calculating device (1) includes: a setting information acquiring section (23) which acquires (a) muscle specifying information that specifies a target muscle, which is a muscle whose function is assisted or resisted by a driving section and (b) a target value of muscle force to be produced by the target muscle at the time of rotational motion under assistance or resistance of the driving section; and a target muscle force evaluating section (24) which acquires an estimated muscle force table (58) and musculoskeletal model data (53) and evaluates the feasibility of the target value of the target muscle. With this arrangement, it is possible to reduce time required to calculate a driving force of the driving section of the power assisting device.Type: GrantFiled: February 5, 2008Date of Patent: May 5, 2009Assignee: National University Corporation Nara Institute of Science and TechnologyInventors: Jun Ueda, Tsukasa Ogasawara, Ming Ding
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Publication number: 20090024061Abstract: In one embodiment of the present invention, a driving force calculating device calculates a driving force so that a desired load is applied on a muscle while a power assisting device assists and/or resists a predetermined motion. A driving force calculating section of a driving force calculating device calculates a driving force of each driving section according to a joint torque table on joint torque necessary for a rotational motion and an assigned muscle force table on an assigned muscle force input to a muscle force input section. For the calculation is used a muscle/artificial muscle integrated model data integrally including musculoskeletal model data on a musculoskeletal model of a human and artificial muscle model data on an artificial muscle model of the power assisting device. The driving force is calculated through optimization using Crowninshield performance function under constraint conditions of the joint torque and the assigned muscle force.Type: ApplicationFiled: August 4, 2005Publication date: January 22, 2009Inventors: Jun Ueda, Tsukasa Ogasawara
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Publication number: 20080216592Abstract: [Technical Problem]: To reduce time required to calculate a driving force of the driving section of the power assisting device [Technical Solution]: A driving force calculating device (1) includes: a setting information acquiring section (23) which acquires (a) muscle specifying information that specifies a target muscle, which is a muscle whose function is assisted or resisted by a driving section and (b) a target value of muscle force to be produced by the target muscle at the time of rotational motion under assistance or resistance of the driving section; and a target muscle force evaluating section (24) which acquires an estimated muscle force table (58) and musculoskeletal model data (53) and evaluates the feasibility of the target value of the target muscle. With this arrangement, it is possible to reduce time required to calculate a driving force of the driving section of the power assisting device.Type: ApplicationFiled: February 5, 2008Publication date: September 11, 2008Inventors: Jun Ueda, Tsukasa Ogasawara, Ming Ding
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Publication number: 20080202202Abstract: A tactile sensor of an embodiment of the present invention includes: a sensing section having an elastic member at a portion which contacts a measurement target; an image acquiring section for acquiring as image information the state of a contact surface of the measurement target and the elastic member, before and after application of an external force tangential to the contact surface; a deformation analyzing section for analyzing deformation information of the contact surface, based on the image information acquired by the image acquiring section; an external force detecting section for detecting the external force applied tangential to the contact surface; and an estimating section for estimating a slippage margin between the measurement target and the elastic member, based on (I) the deformation information of the contact surface, which information acquired by the deformation analyzing section, (II) the external force detected by the external force detecting section, and (III) an object constant of the elType: ApplicationFiled: June 16, 2005Publication date: August 28, 2008Inventors: Jun Ueda, Yutaka Ishida, Tsukasa Ogasawara
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Publication number: 20060066572Abstract: A pointing device includes a sensor obtaining image information, and an image producing unit producing a comparison image at predetermined time intervals by lowering a spatial resolution of an image based on the image information obtained by the sensor and increasing a density resolution of the image based on the image information. The device arithmetically obtains a correlation value indicating a correlation between a predetermined region in a first comparison image among the plurality of comparison images produced by the image producing unit and a predetermined region in a second comparison image produced after the first comparison image.Type: ApplicationFiled: September 27, 2005Publication date: March 30, 2006Inventors: Manabu Yumoto, Takahiko Nakano, Takuji Urata, Sohichi Miyata, Jun Ueda, Tsukasa Ogasawara
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Publication number: 20060012570Abstract: A pointing device that does not limit an operator by personal physical characteristics is structured as follows. An apparatus incorporating a pointing device includes a fingerprint sensor obtaining image information, a cover protecting a sensor surface, and a sensor presser arranged at a face of the cover on the sensor side so as to be in contact with the sensor surface. The shape of sensor presser obtained with sensor changes by the position on cover being pressed by a finger, and an input is performed based thereon.Type: ApplicationFiled: June 8, 2005Publication date: January 19, 2006Applicants: Sharp Kabushiki Kaisha, National University Corporation Nara Institute of Science and TechnologyInventors: Manabu Yumoto, Nobuhisa Tsuji, Sohichi Miyata, Jun Ueda, Tsukasa Ogasawara