Patents by Inventor Yuuki Takahashi
Yuuki Takahashi 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: 11321858Abstract: A distance image generation device includes a light projection unit for projecting reference light onto a subject, a light reception unit having a plurality of two-dimensionally arrayed pixels, an optical system for guiding light from the subject to the light reception unit, an influence calculation means for calculating, based on an amount of light received by a target pixel and peripheral pixels thereof among the plurality of pixels, an influence of optical phenomena on the target pixel and the peripheral pixels, an impact calculation means for calculating the impact exerted by the peripheral pixels on the target pixel based on the influence, and a distance image generation means for generating a distance image of the subject based on the impact.Type: GrantFiled: May 22, 2020Date of Patent: May 3, 2022Assignee: FANUC CORPORATIONInventors: Yuuki Takahashi, Atsushi Watanabe, Minoru Nakamura
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Patent number: 11272172Abstract: An image processing apparatus for execution of image processing on an input image is provided. The image processing apparatus includes a memory, and a processor coupled to the memory and configured to replace a partial image of a predetermined region within the input image with a test image, retain the partial image, detect presence or absence of a failure of the image processing apparatus based on the test image that has been subjected to the image processing, and replace the test image that has been subjected to the image processing with the retained partial image, after detecting the presence or absence of the failure.Type: GrantFiled: December 19, 2019Date of Patent: March 8, 2022Assignee: Ricoh Company, Ltd.Inventors: Atsushi Kawata, Yuuki Takahashi
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Patent number: 11126859Abstract: Provided is a robot system including a robot, a distance image sensor that temporally continuously acquires, from above an operating space of the robot, distance image information around the operating space, and an image processing device that processes the acquired distance image information, the image processing device defining, around the operating space, a monitoring area that includes a boundary for enabling entrance into the operating space from the outside, including a storing unit that stores reference distance image information, and detecting, based on the distance image information acquired by the distance image sensor and the reference distance image information stored in the storing unit, whether a stationary object present in the monitoring area is blocking the boundary in a visual field of the distance image sensor.Type: GrantFiled: September 10, 2019Date of Patent: September 21, 2021Assignee: FANUC CORPORATIONInventors: Yuuki Takahashi, Atsushi Watanabe, Minoru Nakamura
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Patent number: 11053903Abstract: An object of the present invention is to provide a high-pressure fuel supply pump having a structure capable of adjusting the moving speed of an anchor. Therefore, the high-pressure fuel supply pump of the present invention is provided with a protrusion that protrudes toward an anchor side on a fixed core facing surface of a fixed core. The protrusion is configured in such a manner that a minimum distance between the protrusion and an anchor facing surface is smaller than an axial gap dimension configured between the fixed core facing surface and the anchor facing surface in a direction along a central axis in a state where the anchor is stationary at the time of non-energization.Type: GrantFiled: May 22, 2018Date of Patent: July 6, 2021Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yuitsu Kodama, Yuuki Takahashi, Yukihiro Yoshinari, Ryo Kusakabe
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Publication number: 20210158562Abstract: The object detection system includes a TOF sensor which outputs an image of a target space on the basis of a phase difference between reference light emitted toward the target space and reflected light from the target space, an object detection section which detects a position of an object present in the target space on the basis of the output image, an imaging conditions calculation section which calculates imaging conditions including at least one of an integration time and a light emission period of the TOF sensor on the basis of an image of the detected object, and an imaging conditions changing section which changes a configuration of the TOF sensor to the calculated imaging conditions, and the object detection section detects a position of the object on the basis of the image output under the changed imaging conditions.Type: ApplicationFiled: September 23, 2020Publication date: May 27, 2021Inventors: Minoru NAKAMURA, Yuuki TAKAHASHI, Atsushi WATANABE
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Patent number: 10958202Abstract: A rotary electric machine is equipped with a stator and a rotor. The rotor has a d-axis magnetic circuit that is produced by a magnetomotive force of a field winding, and magnet magnetic circuits that are produced by a magnetic force of permanent magnets. The d-axis magnetic circuit and a q-axis magnetic circuit have at least a part thereof that is common to both. The permeance of the d-axis magnetic circuit is smaller than the permeance of the q-axis magnetic circuit, when a load is being applied to the rotor. A control apparatus of the rotary electric machine has a switching circuit that controls the field current in the field winding, and a control section that makes the switching frequency of the switching circuit become higher when the field current is above a threshold value than when the field current is less than or equal to the threshold value.Type: GrantFiled: July 15, 2019Date of Patent: March 23, 2021Assignee: DENSO CORPORATIONInventors: Makoto Taniguchi, Yuuki Takahashi
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Patent number: 10910932Abstract: In a rotating electric machine, a rotor includes a field core, a field coil and permanent magnets. The field core has a boss portion and claw-shaped magnetic pole portions. Each of the permanent magnets is arranged between one circumferentially-adjacent pair of the claw-shaped magnetic pole portions. A d-axis magnetic circuit and a magnet magnetic circuit share a magnetic path in at least parts thereof. Along the d-axis magnetic circuit, magnetic flux generated by the magnetomotive force of the field coil flows through the boss portion, one pair of the claw-shaped magnetic pole portions and a stator core. Along the magnet magnetic circuit, magnetic flux generated by the magnetic force of a corresponding one of the permanent magnets flows. The relationship of Ast>Af is satisfied, where Ast is a magnetic path cross-sectional area of a stator and Af is a magnetic path cross-sectional area of the rotor.Type: GrantFiled: August 2, 2019Date of Patent: February 2, 2021Assignee: DENSO CORPORATIONInventor: Yuuki Takahashi
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Publication number: 20200408916Abstract: A distance measurement device includes a light emission unit which is capable of emitting measurement light to be irradiated toward an object, a light reception unit configured to receive light from the object via an optical filter through which light having the same wavelength band as the measurement light passes, a distance calculation unit configured to calculate a distance to the object based on each charge amount obtained by accumulating a charge corresponding to the received light at a plurality of timings which are delayed by a predetermined phase with respect to emission timing of the measurement light, and an external light intensity calculation unit configured to calculate external light illuminance of external light illuminating the object at the spectral sensitivity of the optical filter based on the charge amounts acquired at the light reception unit and a reflectivity of the object.Type: ApplicationFiled: June 23, 2020Publication date: December 31, 2020Inventors: Minoru NAKAMURA, Yuuki TAKAHASHI, Atsushi WATANABE
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Publication number: 20200380707Abstract: A distance image generation device includes a light projection unit for projecting reference light onto a subject, a light reception unit having a plurality of two-dimensionally arrayed pixels, an optical system for guiding light from the subject to the light reception unit, an influence calculation means for calculating, based on an amount of light received by a target pixel and peripheral pixels thereof among the plurality of pixels, an influence of optical phenomena on the target pixel and the peripheral pixels, an impact calculation means for calculating the impact exerted by the peripheral pixels on the target pixel based on the influence, and a distance image generation means for generating a distance image of the subject based on the impact.Type: ApplicationFiled: May 22, 2020Publication date: December 3, 2020Inventors: Yuuki TAKAHASHI, Atsushi WATANABE, Minoru NAKAMURA
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Patent number: 10848041Abstract: A rotating electric machine includes a stator and a rotor. The rotor includes: a field core having at least one boss portion, a pair of disc portions and a plurality of claw-shaped magnetic pole portions; a field coil arranged between the at least one boss portion and the claw-shaped magnetic pole portions; a plurality of permanent magnets each of which is arranged between one circumferentially-adjacent pair of the claw-shaped magnetic pole portions; and a ring-shaped fixing member fixed to radially inner parts of the claw-shaped magnetic pole portions to support the claw-shaped magnetic pole portions from the radially inner side. Moreover, a d-axis magnetic circuit and a magnet magnetic circuit are at least partially coincident with each other to share a common circuit portion. When field current is supplied to the field coil, the permeance of the d-axis magnetic circuit is lower than the permeance of a q-axis magnetic circuit.Type: GrantFiled: July 9, 2019Date of Patent: November 24, 2020Assignee: DENSO CORPORATIONInventors: Makoto Taniguchi, Yuuki Takahashi
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Patent number: 10840787Abstract: A rotating electric machine includes a stator and a rotor. The stator includes a stator core and an armature coil wound on the stator core. The rotor is arranged radially inside the stator to radially face the stator. The rotor includes: a field core having a plurality of magnetic pole portions for respectively forming a plurality of magnetic poles the polarities of which are alternately different in a circumferential direction; a field coil wound on the field core; and a tubular short-circuiting member that is arranged radially outside the magnetic pole portions to cover radially outer surfaces of the magnetic pole portions and magnetically connects each circumferentially-adjacent pair of the magnetic pole portions. Moreover, two axial end portions of the short-circuiting member protrude axially outward respectively from two axial ends of the stator core.Type: GrantFiled: September 11, 2017Date of Patent: November 17, 2020Assignee: DENSO CORPORATIONInventor: Yuuki Takahashi
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Patent number: 10797543Abstract: A rotating electric machine includes a stator and a rotor. The stator includes a stator core and an armature coil wound on the stator core. The rotor is arranged radially inside the stator to radially face the stator. The rotor includes: a field core having a plurality of magnetic pole portions for respectively forming a plurality of magnetic poles the polarities of which are alternately different in a circumferential direction; a field coil wound on the field core; and a tubular short-circuiting member that is arranged radially outside the magnetic pole portions to cover radially outer surfaces of the magnetic pole portions and magnetically connects each circumferentially-adjacent pair of the magnetic pole portions. The short-circuiting member is provided within an axial range between two axial ends of the stator core.Type: GrantFiled: September 11, 2017Date of Patent: October 6, 2020Assignee: DENSO CORPORATIONInventor: Yuuki Takahashi
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Patent number: 10759710Abstract: Disclosed is provision of a ceramic coat having an excellent low-particle generation as well as a method for assessing the low-particle generation of the ceramic coat. A composite structure including a substrate and a structure which is formed on the substrate and has a surface, wherein the structure includes a polycrystalline ceramic and the composite structure has luminance Sa satisfying a specific value calculated from a TEM image analysis thereof, can be suitably used as an inner member of a semiconductor manufacturing apparatus required to have a low-particle generation.Type: GrantFiled: March 8, 2019Date of Patent: September 1, 2020Assignee: Toto Ltd.Inventors: Junichi Iwasawa, Hiroaki Ashizawa, Takuma Wada, Ryoto Takizawa, Toshihiro Aoshima, Yuuki Takahashi, Atsushi Kinjo
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Patent number: 10731616Abstract: A high-pressure fuel supply pump comprising a suction valve disposed on a suction side of a pressurizing chamber, an engagement member having a protrusion part that protrudes toward the outer periphery and biasing the suction valve by use of the force of a spring, a stator for generating a magnetic attraction force, and a plunger drawn by the magnetic attraction force and driving the engagement member toward the stator by engaging with the protrusion part, the fuel supply pump being configured so that the area of the fuel passage is smallest between the outer periphery of the protrusion part and the inner periphery of the plunger, and so that a tapered section whereby the area of the flow path increases from the portion where the area of the passage is smallest toward the pressurizing chamber or toward the suction valve side is formed.Type: GrantFiled: August 2, 2017Date of Patent: August 4, 2020Assignee: Hitachi Automotive Systems Ltd.Inventors: Yuitsu Kodama, Yukihiro Yoshinari, Kenichiro Tokuo, Yuuki Takahashi
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Publication number: 20200213583Abstract: An image processing apparatus for execution of image processing on an input image is provided. The image processing apparatus includes a memory, and a processor coupled to the memory and configured to replace a partial image of a predetermined region within the input image with a test image, retain the partial image, detect presence or absence of a failure of the image processing apparatus based on the test image that has been subjected to the image processing, and replace the test image that has been subjected to the image processing with the retained partial image, after detecting the presence or absence of the failure.Type: ApplicationFiled: December 19, 2019Publication date: July 2, 2020Applicant: Ricoh Company, Ltd.Inventors: Atsushi KAWATA, Yuuki TAKAHASHI
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Publication number: 20200200908Abstract: An object monitoring system includes a distance measuring device which generates, while repeating an imaging cycle having different imaging modes, a distance image of a target space for each of the imaging modes, and a computing device which determines presence or absence of an object within a monitoring area set in the target space based on the distance image.Type: ApplicationFiled: October 28, 2019Publication date: June 25, 2020Inventors: Minoru NAKAMURA, Yuuki TAKAHASHI, Atsushi WATANABE
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Publication number: 20200182210Abstract: An object of the present invention is to provide a high-pressure fuel supply pump having a structure capable of adjusting the moving speed of an anchor. Therefore, the high-pressure fuel supply pump of the present invention is provided with a protrusion that protrudes toward an anchor side on a fixed core facing surface of a fixed core. The protrusion is configured in such a manner that a minimum distance between the protrusion and an anchor facing surface is smaller than an axial gap dimension configured between the fixed core facing surface and the anchor facing surface in a direction along a central axis in a state where the anchor is stationary at the time of non-energization.Type: ApplicationFiled: May 22, 2018Publication date: June 11, 2020Inventors: Yuitsu KODAMA, Yuuki TAKAHASHI, Yukihiro YOSHINARI, Ryo KUSAKABE
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Publication number: 20200132846Abstract: An object monitoring system includes means for calculating an arrangement of an external object in a target space based on a distance measurement value of the external object, and estimating a shift amount of the distance measurement value caused by the external object in accordance with the calculated arrangement, and means for correcting, based on the estimated shift amount, determination of whether or not a monitored object is present in a monitoring area set in the target space.Type: ApplicationFiled: September 11, 2019Publication date: April 30, 2020Inventors: Minoru NAKAMURA, Atsushi WATANABE, Yuuki TAKAHASHI
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Publication number: 20200134322Abstract: Provided is a robot system including a robot, a distance image sensor that temporally continuously acquires, from above an operating space of the robot, distance image information around the operating space, and an image processing device that processes the acquired distance image information, the image processing device defining, around the operating space, a monitoring area that includes a boundary for enabling entrance into the operating space from the outside, including a storing unit that stores reference distance image information, and detecting, based on the distance image information acquired by the distance image sensor and the reference distance image information stored in the storing unit, whether a stationary object present in the monitoring area is blocking the boundary in a visual field of the distance image sensor.Type: ApplicationFiled: September 10, 2019Publication date: April 30, 2020Applicant: FANUC CORPORATIONInventors: Yuuki TAKAHASHI, Atsushi WATANABE, Minoru NAKAMURA
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Patent number: 10618170Abstract: A robot system includes a robot installed such that the working space thereof is within a first area, an image acquisition unit that sequentially acquires images of the vicinity of a boundary of the first area and a second area that are adjacent to each other with the boundary therebetween, a monitoring-area setting unit that sets a monitoring area in a space adjacent to the boundary in the second area in the images acquired by the image acquisition unit, an object detecting unit that detects a moving object in the monitoring area set by the monitoring-area setting unit by processing the images acquired by the image acquisition unit, and a controller that performs control so as to restrict the operation of the robot when the moving object is detected by the object detecting unit.Type: GrantFiled: January 11, 2018Date of Patent: April 14, 2020Assignee: FANUC CORPORATIONInventors: Yuuki Takahashi, Atsushi Watanabe, Minoru Nakamura