Patents by Inventor Takehiro NIIKURA
Takehiro NIIKURA 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: 11651671Abstract: To be capable of efficiently transmitting appropriate information on the motion improvement to a person in motion. A motion evaluation system includes a sensor unit, an information processing device, and an information presentation device. The information processing device includes a communication device, a storage device, and an arithmetic device.Type: GrantFiled: April 26, 2021Date of Patent: May 16, 2023Assignee: Hitachi, Ltd.Inventors: Takuto Sato, Takehiro Niikura, Mitsuhiro Okada, Hiroki Ohashi, Takayuki Akiyama, Katsuyuki Nakamura, Mohammad Osamh Adel Al-Naser, Sheraz Ahmed
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Publication number: 20220304593Abstract: Provided is a posture recognition system that can properly respond to an error that is changed according to a user's motion. A posture estimation section calculates posture data indicating a posture of a user wearing clothing, on the basis of motion data measured by a posture sensor attached to the clothing. An error estimation section calculates error data which is an estimate of an error that is occurring in the posture data, on the basis of the motion data and the posture data.Type: ApplicationFiled: March 16, 2022Publication date: September 29, 2022Inventors: Takehiro NIIKURA, Takayuki AKIYAMA, Bertram TAETZ, Gabriele BLESER, Michael LORENZ, Didier STRICKER
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Publication number: 20210335114Abstract: To be capable of efficiently transmitting appropriate information on the motion improvement to a person in motion. A motion evaluation system includes a sensor unit, an information processing device, and an information presentation device. The information processing device includes a communication device, a storage device, and an arithmetic device.Type: ApplicationFiled: April 26, 2021Publication date: October 28, 2021Inventors: Takuto SATO, Takehiro NIIKURA, Mitsuhiro OKADA, Hiroki OHASHI, Takayuki AKIYAMA, Katsuyuki NAKAMURA, Mohammad OSAMH ADEL AL-NASER, Sheraz AHMED
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Patent number: 11071495Abstract: The present invention is provided to notify a person who makes a movement of a part to be improved in the movement. A movement evaluation system includes: a proficiency degree estimating unit generating a proficiency degree score on the basis of movement data obtained by detecting a movement of a user; an improvement point extracting unit specifying a part of the movement of the user as an improvement point on the basis of the movement data; and an information generating unit generating suggestion information to be presented to the user, on the basis of the improvement point.Type: GrantFiled: November 13, 2019Date of Patent: July 27, 2021Assignee: HITACHI, LTD.Inventors: Mitsuhiro Okada, Takehiro Niikura, Katsuyuki Nakamura, Takuto Sato, Hiroki Ohashi, Sheraz Ahmed, Mohammad Osamh Adel Al-Naser
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Patent number: 10942607Abstract: A manipulation detection device includes a first manipulation detection process based on detection of light emission of an electronic pen (a first manipulation object) and a second manipulation detection process based on detection of a shadow of a finger (a second manipulation object) by radiation of illumination light. An image sensor captures an image of the electronic pen and an image of the finger, and image signal processing units perform a contrast adjustment of the captured image. Here, a state of the contrast adjustment performed by the image signal processing unit differs between the captured image of the electronic pen and the captured image of the finger. Manipulation detecting units execute a manipulation detection process for the electronic pen and the finger using the captured image which has undergone the contrast adjustment.Type: GrantFiled: November 13, 2015Date of Patent: March 9, 2021Assignee: MAXELL, LTD.Inventors: Takehiro Niikura, Takashi Matsubara, Naoki Mori
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Patent number: 10915186Abstract: An operation target device projects a display video onto a projection surface, which is captured by a camera. An operation detectable region specifying unit specifies respective regions where an operation is detectable and is undetectable in a range in which the display video is projected, based on image data captured by the camera. Finger and pen contact position detection units detect the operation to the operation object based on the image data. The operation target device displays the display video so that the region where the operation to the operation object is detectable, which is specified by the operation detectable region specifying unit, is distinguished from the region where the operation to the operation object is undetectable. The operation target device changes a display position of the operation object so the operation object is displayed within a range of the region where the operation to the operation object is detectable.Type: GrantFiled: December 12, 2019Date of Patent: February 9, 2021Assignee: MAXELL, LTD.Inventors: Mitsuhiro Kitani, Takashi Matsubara, Takehiro Niikura, Shinichi Obata, Takashi Kanemaru
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Publication number: 20200253541Abstract: The present invention is provided to notify a person who makes a movement of a part to be improved in the movement. A movement evaluation system includes: a proficiency degree estimating unit generating a proficiency degree score on the basis of movement data obtained by detecting a movement of a user; an improvement point extracting unit specifying a part of the movement of the user as an improvement point on the basis of the movement data; and an information generating unit generating suggestion information to be presented to the user, on the basis of the improvement point.Type: ApplicationFiled: November 13, 2019Publication date: August 13, 2020Inventors: Mitsuhiro OKADA, Takehiro NIIKURA, Katsuyuki NAKAMURA, Takuto SATO, Hiroki OHASHI, Sheraz AHMED, Mohammad Osamh Adel AL-NASER
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Publication number: 20200174620Abstract: A manipulation detection device includes a first manipulation detection process based on detection of light emission of an electronic pen (a first manipulation object) and a second manipulation detection process based on detection of a shadow of a finger (a second manipulation object) by radiation of illumination light. An image sensor captures an image of the electronic pen and an image of the finger, and image signal processing units perform a contrast adjustment of the captured image. Here, a state of the contrast adjustment performed by the image signal processing unit differs between the captured image of the electronic pen and the captured image of the finger. Manipulation detecting units execute a manipulation detection process for the electronic pen and the finger using the captured image which has undergone the contrast adjustment.Type: ApplicationFiled: November 13, 2015Publication date: June 4, 2020Inventors: Takehiro NIIKURA, Takashi MATSUBARA, Naoki MORI
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Publication number: 20200150821Abstract: The present invention is intended to correct false recognition and non-detection of a user operation due to an influence of external light or the like. An operation target device 150 projects a display video onto a projection surface. A camera 102 captures the projection surface. An operation detectable region specifying unit 107 specifies respective regions where an operation to an operation object is detectable and is undetectable in a range in which the display video is projected, based on image data captured by the camera 102. A finger contact position detection unit 105 and a pen contact position detection unit 106 detect the operation to the operation object based on the image data captured by the camera 102.Type: ApplicationFiled: December 12, 2019Publication date: May 14, 2020Applicant: MAXELL, LTD.Inventors: Mitsuhiro KITANI, Takashi MATSUBARA, Takehiro NIIKURA, Shinichi OBATA, Takashi KANEMARU
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Patent number: 10521050Abstract: An operation target device projects a display video onto a projection surface, which is captured by a camera. An operation detectable region specifying unit specifies respective regions where an operation is detectable and is undetectable based on image data captured by the camera. Finger and pen contact position detection units detect the operation to the operation object based on the image data captured by the camera. The operation target device displays the display video so that the region where the operation to the operation object is detectable, which is specified by the operation detectable region specifying unit, is distinguished from the region where the operation to the operation object is undetectable. In addition, the operation target device changes a display position of the operation object so that the operation object is displayed within a range of the region where the operation to the operation object is detectable.Type: GrantFiled: November 13, 2014Date of Patent: December 31, 2019Assignee: MAXELL, LTD.Inventors: Mitsuhiro Kitani, Takashi Matsubara, Takehiro Niikura, Shinichi Obata, Takashi Kanemaru
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Patent number: 10459577Abstract: A video display device includes first and second illuminators irradiating a manipulation surface with illumination light for manipulation detection in different directions, an imaging unit employing an imaging element of a rolling shutter system that images the irradiated manipulation surface together with a manipulation object of a user, and a contact point detecting unit detecting a contact point at which the manipulation object of the user touches the manipulation surface based on a captured image of the imaging unit. Captured images of shadows of the manipulation object of the user formed by repeatedly lighting up the first illuminator and the second illuminator alternately are used in a contact point detection process of the contact point detecting unit, and in the alternate lighting of the first illuminator and the second illuminator, a lighting period of one illuminator is longer than an imaging cycle of one frame of the imaging unit.Type: GrantFiled: October 7, 2015Date of Patent: October 29, 2019Assignee: MAXELL, LTD.Inventors: Takehiro Niikura, Takashi Matsubara, Naoki Mori
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Patent number: 10452206Abstract: A projection video display device includes: a projection unit projecting a display video upon a projection surface; an image capture unit; detection units detecting the states of manipulation objects which carry out actions for the input manipulation; a manipulation instruction information generating unit, on the basis of the states of the manipulation objects which the detection units have detected, generating manipulation instruction information indicating a description of the input manipulation; and a communication unit connecting to the information processing device. The detection units detect movements of manipulation objects and attributes which represent the states of manipulation objects other than the movements.Type: GrantFiled: December 8, 2014Date of Patent: October 22, 2019Assignee: MAXELL, LTD.Inventors: Takashi Kanemaru, Shinichi Obata, Mitsuhiro Kitani, Takashi Matsubara, Takehiro Niikura
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Publication number: 20190065004Abstract: A video display device includes first and second illuminators irradiating a manipulation surface with illumination light for manipulation detection in different directions, an imaging unit employing an imaging element of a rolling shutter system that images the irradiated manipulation surface together with a manipulation object of a user, and a contact point detecting unit detecting a contact point at which the manipulation object of the user touches the manipulation surface based on a captured image of the imaging unit. Captured images of shadows of the manipulation object of the user formed by repeatedly lighting up the first illuminator and the second illuminator alternately are used in a contact point detection process of the contact point detecting unit, and in the alternate lighting of the first illuminator and the second illuminator, a lighting period of one illuminator is longer than an imaging cycle of one frame of the imaging unit.Type: ApplicationFiled: October 7, 2015Publication date: February 28, 2019Inventors: Takehiro NIIKURA, Takashi MATSUBARA, Naoki MORI
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Publication number: 20170329458Abstract: A projection video display device includes: a projection unit projecting a display video upon a projection surface; an image capture unit; detection units detecting the states of manipulation objects which carry out actions for the input manipulation; a manipulation instruction information generating unit, on the basis of the states of the manipulation objects which the detection units have detected, generating manipulation instruction information indicating a description of the input manipulation; and a communication unit connecting to the information processing device. The detection units detect movements of manipulation objects and attributes which represent the states of manipulation objects other than the movements.Type: ApplicationFiled: December 8, 2014Publication date: November 16, 2017Applicant: HITACHI MAXELL, LTD.Inventors: Takashi KANEMARU, Shinichi OBATA, Mitsuhiro KITANI, Takashi MATSUBARA, Takehiro NIIKURA
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Publication number: 20170322672Abstract: An operation target device projects a display video onto a projection surface, which is captured by a camera. An operation detectable region specifying unit specifies respective regions where an operation is detectable and is undetectable based on image data captured by the camera. Finger and pen contact position detection units detect the operation to the operation object based on the image data captured by the camera. The operation target device displays the display video so that the region where the operation to the operation object is detectable, which is specified by the operation detectable region specifying unit, is distinguished from the region where the operation to the operation object is undetectable. In addition, the operation target device changes a display position of the operation object so that the operation object is displayed within a range of the region where the operation to the operation object is detectable.Type: ApplicationFiled: November 13, 2014Publication date: November 9, 2017Applicant: HITACHI MAXELL, LTD.Inventors: Mitsuhiro KITANI, Takashi MATSUBARA, Takehiro NIIKURA, Shinichi OBATA, Takashi KANEMARU