Patents by Inventor Yuki Takahashi
Yuki 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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Publication number: 20230412029Abstract: An armature winding of a rotary electric machine includes two systems of electrically independent windings. An armature winding of a first system is closer to the field element in the radial direction than an armature winding of a second system, A current control device is provided for controlling a current to the armature winding of the first system and the armature winding of the second system. In consideration of a difference in magnetic flux waveforms from the field element caused by a difference in the distance to the field element in the radial direction, the current control device differentiates a current waveform to the armature winding of the first system from a current waveform to the armature winding of the second system.Type: ApplicationFiled: August 30, 2023Publication date: December 21, 2023Inventors: MASASHI MATSUDA, YUKI TAKAHASHI
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Publication number: 20230410485Abstract: A machine learning device includes a processor which performs, when performing learning of a model with image data, the learning of the model while excluding the image data of an animal having a feature amount common with a feature amount of a human.Type: ApplicationFiled: May 31, 2023Publication date: December 21, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshihisa SHINODA, Shigeki NAKAYAMA, Koji IDE, Tomohiro KANEKO, Hiroshi OYAGI, Masaki ITO, Yuki TAKAHASHI
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Publication number: 20230412028Abstract: An armature winding of a rotary electric machine includes multi-phase windings. The phase winding of each phase includes a plurality of series-connected parts of the winding segments, and the series-connected parts are connected in parallel to form the phase winding. The winding segments include a first winding segment and a second winding segment, both having coil resistance different from each other. Each of the series-connected parts is formed by connecting the first winding segment and the second winding segment in series.Type: ApplicationFiled: August 30, 2023Publication date: December 21, 2023Inventors: EIJI KIBA, YUKI TAKAHASHI
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Patent number: 11848586Abstract: This vibration actuator has: a stationary body having a coil; a movable body having a magnet disposed radially inside the coil; and an elastic support part for supporting the movable body so that the movable body can move relative to the stationary body. The stationary body has a coil holding part. The coil holding part has, on the inner diameter side of the coil, a coil protection wall part. The elastic support part has at least two or more plate springs bridged between the coil holding part and the movable body so as to sandwich the movable body in a vibration direction. In order that the movable body does not come into contact with the coil holding part when not vibrating and when vibrating, the plate springs support the movable body so that the movable body is movable in the vibration direction.Type: GrantFiled: August 28, 2019Date of Patent: December 19, 2023Assignee: Minebea Mitsumi Inc.Inventors: Yuki Takahashi, Chikara Sekiguchi, Shigeyuki Shimomura, Daisuke Kodama, Yuta Yoshii, Yasutaka Kitamura, Shigenori Inamoto
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Publication number: 20230401871Abstract: An information processing system includes: a vehicle that captures an image of a periphery by an in-vehicle camera; and an information processing device including a processor. Further, the processor stores acquired image data without performing privacy processing in a case where a predetermined specific event is occurred therein, and stores the acquired image data after performing the privacy processing in a case where the specific event is not occurred therein.Type: ApplicationFiled: May 31, 2023Publication date: December 14, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki Ito, Yuki Takahashi, Koji Ide, Hiroshi Oyagi, Yoshihisa Shinoda, Shigeki Nakayama, Tomohiro Kaneko
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Publication number: 20230400925Abstract: The present invention provides a tactile feedback device that detects a user operation based on touch without erroneous detection, providing stable tactile feedback. This device includes: an operated section that receives a user operation based on touch; a touch detection section for detecting touch on the operated section; a load detection section that detects a load on the operated section due to touch; a vibration actuator that generates vibration and outputs the vibration to the operated section; and a driving control section that drives, in response to the detection of touch and detection of load, the vibration actuator to vibrate the operated section, feeding back tactile sensation to a user, wherein the load detection section stops detection of a load during vibration.Type: ApplicationFiled: October 28, 2021Publication date: December 14, 2023Applicant: MINEBEA MITSUMI Inc.Inventors: Yuki TAKAHASHI, Yasutaka KITAMURA, Takahiko IRIE, Tomoya ISHITANI
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Patent number: 11843297Abstract: Provided is a vibration actuator including: a movable body including a coil and a core around which the coil is wound; a fixing body including a magnet; and a shaft part turnably supporting the movable body with respect to the fixing body on a side of the one end part of the core. The movable body reciprocatingly and rotationally vibrates around the shaft part with respect to the fixing body by cooperation between the coil to be energized and the magnet. The magnet is disposed to face the other end part of the core in an extending direction of the core when energization is not performed. The magnet includes two magnetic poles having different polarities and arranged in a reciprocating and rotational vibration direction. A weight part is disposed in a notch on a side of the other end part of the core or in the coil.Type: GrantFiled: September 29, 2021Date of Patent: December 12, 2023Assignee: MINEBEA MITSUMI Inc.Inventors: Yoshihiro Gomi, Takanori Kato, Yuki Takahashi
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Patent number: 11843333Abstract: A stator of a rotating electrical machine has a slot-less structure. The rotating electrical machine includes a controller. The controller determines a value of a q-axis command current in accordance with requirement information and an input command value for a controlled variable of the rotating electrical machine. The requirement information includes a relationship between values of the q-axis command current and corresponding command values for the controlled variable. The controller performs a task of correcting the value of the q-axis command current to thereby restrict temperature change in a magnet unit from having an influence on the relationship between the command values for the controlled variable and the corresponding values of the q-axis command current. The controller controls an inverter to thereby adjust a value of the q-axis current flowing through an armature winding member to the corrected value of the q-axis command current.Type: GrantFiled: June 29, 2020Date of Patent: December 12, 2023Assignee: DENSO CORPORATIONInventor: Yuki Takahashi
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Patent number: 11843334Abstract: A rotating electrical machine includes a magnetic field-producing unit, an armature with a multi-phase armature winding, and a rotor. The magnetic field-producing unit includes a first portion and a second portion. The first portion is located closer to a d-axis in a d-q axis coordinate system than the second position is. The second position is located closer to a q-axis in the d-q axis coordinate system than the first position is. The magnetic field-producing unit is magnetically oriented to meet a condition where an angle which an easy axis of magnetization of the first portion makes with the d-axis is smaller than an angle which an easy axis of magnetization of the second portion makes with the q-axis. The magnetic field-producing unit is configured to have an intrinsic coercive force of 400 kA/m and also have a remanent flux density of 1.0 T or more.Type: GrantFiled: January 21, 2020Date of Patent: December 12, 2023Assignee: DENSO CORPORATIONInventors: Yuki Takahashi, Makoto Taniguchi
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Patent number: 11841012Abstract: A pump system contains a vibration actuator which can be electromagnetically driven by applying an alternating-current voltage E thereto, a sealed chamber connected to a suction port and a discharge port, and a movable wall for changing a volume of the sealed chamber. The movable wall is displaced due to drive of the vibration actuator to supply fluid in the sealed chamber into a target object. The pump system controls an effective value of the alternating-current voltage E so that an amplitude Y of the vibration actuator is constant.Type: GrantFiled: December 20, 2021Date of Patent: December 12, 2023Assignee: MINEBEA MITSUMI INC.Inventors: Yuta Yoshii, Chikara Sekiguchi, Shigenori Inamoto, Yuki Takahashi, Daisuke Kodama, Daisuke Kurita
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Publication number: 20230397214Abstract: A terminal comprises: a control unit that multiplexes two or more uplink control information having mutually different priorities on an uplink control channel; and a communication unit that transmits an uplink signal using the uplink control channel on which the two or more uplink control information are multiplexed; wherein the control unit determines a number of resource blocks related to the uplink control channel in a separate coding of the two or more uplink control information.Type: ApplicationFiled: November 11, 2021Publication date: December 7, 2023Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Satoshi Nagata, Qiping Pi, Jing Wang, Lan Chen
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Publication number: 20230397243Abstract: A terminal comprising: a communication unit that performs a transmission of an uplink signal using two or more uplink channels with different priorities; and a control unit that performs a multiplexing control on a multiplexing of two or more uplink channels when a multiplexing timeline condition on the multiplexing of two or more uplink channels is satisfied, and performs a prioritization control on a prioritization of two or more uplink channels when a prioritization timeline condition on the prioritization of two or more uplink channels is satisfied; wherein the control unit determines whether or not the prioritization timeline condition is satisfied, after determining whether or not the multiplexing timeline condition is satisfied.Type: ApplicationFiled: October 9, 2020Publication date: December 7, 2023Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shinya Kumagai, Satoshi Nagata
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Patent number: 11831228Abstract: A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.Type: GrantFiled: September 22, 2021Date of Patent: November 28, 2023Assignee: DENSO CORPORATIONInventors: Yuki Takahashi, Makoto Taniguchi
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Patent number: 11824428Abstract: A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.Type: GrantFiled: September 22, 2021Date of Patent: November 21, 2023Assignee: DENSO CORPORATIONInventors: Yuki Takahashi, Makoto Taniguchi
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Patent number: 11817749Abstract: The purpose of the invention is to achieve a miniaturized power tool. Provided is a hammer drill (1A) that includes: a brushless motor (10) that is a drive source for a tip tool (20); a control unit for controlling the driving of the brushless motor (10); a motor housing (33) to which the brushless motor (10) is attached; and a handle housing (34) provided with a grip (2). The control unit includes: a switching board (12) and a Hall element board (13); and a converter board (11) on which an electrolytic capacitor (11a) is installed. The brushless motor (10) is disposed to be sandwiched between the electrolytic capacitor (11a), and the switching board (12) and the Hall element board (13), along the axial direction (M) of a drive shaft (16) that drives the tip tool (20).Type: GrantFiled: March 29, 2019Date of Patent: November 14, 2023Assignee: Koki Holdings Co., Ltd.Inventors: Yuta Noguchi, Hideyuki Hashimoto, Yuki Takahashi
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Publication number: 20230361662Abstract: This vibration actuator comprises a fixed body including a coil, a movable body including a magnet, and an elastic support part that supports the movable body so as to be freely moveable with respect to the fixed body. The elastic support part has an outer circumferential part fixed to the fixed body, an inner circumferential part disposed inside in the radial direction of the outer circumferential part and fixed to the movable body, and a deforming arm part disposed between the outer circumferential part and the inner circumferential part and coupling the outer circumferential part and the inner circumferential part, the deforming arm part being elastically deformable. An attenuation part is provided across the outer circumferential part and a portion of the deforming arm part on an outer circumferential part side thereof, the attenuation part attenuating vibrations in the elastic support part when the movable body moves.Type: ApplicationFiled: February 26, 2021Publication date: November 9, 2023Applicant: Minebea Mitsumi Inc.Inventors: Yuki TAKAHASHI, Chikara SEKIGUCHI, Shigeyuki SHIMOMURA, Yoshihiro KUMANOMIDO, Daisuke KODAMA, Yuta YOSHII, Shigenori INAMOTO
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Patent number: 11807158Abstract: A vehicle lighting device includes: a first optical system including a light source and a first lens; a second optical system including a light source and a second lens; and a housing configured to house the first optical system and the second optical system. The first optical system is configured to illuminate an interior of a vehicle. The second optical system is configured to display predetermined information to the outside of the vehicle.Type: GrantFiled: October 28, 2020Date of Patent: November 7, 2023Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Yuki Takahashi, Yusuke Nakada, Tsuneto Tamura, Jumpei Mochizuki
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Publication number: 20230344376Abstract: Provided is an actuator, the actuator comprising: an actuator body and a control device that includes a circuitry configured to supply a main driving current pulse and a sub-driving current pulse to the coil, both of which are driving current pulses for driving the operation device in one direction in a vibrating direction thereof, in accordance with a touch operation of an operation device supported so as to be elastically vibrated, the main driving current pulse being capable of starting an elastic vibration, the sub-driving current pulse being capable of adjusting attenuation period of the elastic vibration after the starting the elastic vibration, and polarities of the main driving current pulse and the sub-driving current pulse being all identical.Type: ApplicationFiled: June 29, 2023Publication date: October 26, 2023Applicant: Minebea Mitsumi Inc.Inventors: Tomoya ISHITANI, Yuki TAKAHASHI
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Publication number: 20230345472Abstract: A terminal according to an aspect of the present disclosure includes: a control section that, in a case where a first uplink channel and a plurality of second uplink channels having a lower priority than the first uplink channel and not overlapping in a time domain are overlapping, performs control to map at least one of uplink control information corresponding to each of the plurality of second uplink channels to the first uplink channel; and a transmitting section that uses the first uplink channel to transmit at least one of the uplink control information corresponding to each of the plurality of second uplink channels.Type: ApplicationFiled: September 16, 2020Publication date: October 26, 2023Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Satoshi Nagata, Jing Wang, Lan Chen, Jialin Wu, Yong Li
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Publication number: 20230337238Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section configured to receive information on a priority corresponding to a physical uplink control channel; and a control section configured to, when a plurality of the physical uplink control channels having different priorities overlap each other in a time domain, determine, based on a format of each physical uplink control channel, whether or not to transmit uplink control information corresponding to each physical uplink control channel, and the physical uplink control channel to be used for transmission of the uplink control information corresponding to each physical uplink control channel.Type: ApplicationFiled: August 11, 2020Publication date: October 19, 2023Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Satoshi Nagata, Jing Wang, Lan Chen