Patents by Inventor Hiroshi Fujimoto
Hiroshi Fujimoto 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: 20250144759Abstract: To accurately perform movement control of a moving body, a machine tool includes a feed driver that moves a moving body in the machine tool, a feedback controller that feedback-controls the feed driver in accordance with a state variable, a friction compensator that, to compensate for rolling friction that occurs in the feed driver, adds, in advance, a friction compensation value obtained from measurement data of rolling friction or a friction compensation value calculated using a rolling friction model to a command value to be input to the feed driver, and a reverse response reducer that reduces, using the state variable of the feedback controller, a reverse response that occurs due to addition of the friction compensation value.Type: ApplicationFiled: December 27, 2022Publication date: May 8, 2025Applicants: The University of Tokyo, DMG MORI CO., LTDInventors: Hiroshi FUJIMOTO, Takumi HAYASHI, Yuki TERADA, Yoshihiro ISAOKA
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Publication number: 20250133315Abstract: The present disclosure is an optical line switching node device N which includes an optical switch part 2 which performs optical path switching between communication optical fibers F-0, F-1; a communication optical signal extraction part 5-0, 5-1 which extracts some of communication optical signals from one or both of the communication optical fibers F-0, F-1 and photoelectrically converts the extracted some of the communication optical signals; and a communication optical signal storage part 6 which stores some of communication optical signals photoelectrically converted in the communication optical signal extraction part 5-1, 5-1 and uses the stored energy to drive the optical switch part 2.Type: ApplicationFiled: August 16, 2021Publication date: April 24, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kazuhide NAKAE, Kazunori KATAYAMA, Ryo KOYAMA, Hiroshi WATANABE, Tomohiro KAWANO, Tatsuya FUJIMOTO
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Publication number: 20250130371Abstract: An object of the present disclosure is to provide an optical switch and an optical switch system capable of achieving optical path switching with less power. In order to achieve the above object, an optical switch according to the present disclosure includes a plate-shaped cladding provided with a trench in a thickness direction, opposing lenses exposed to the trench, two optical waveguides coaxially arranged inside the cladding, respective one ends of the optical waveguides being exposed to a surface of the cladding and respective other ends of the optical waveguides opposing each other in the trench via the opposing lenses, a movable transparent body that transmits light of the opposing lenses when the transparent body is sandwiched by the opposing lenses in the trench, and a movable double-sided mirror that reflects light incident from the opposing lenses in a direction opposite to an incident direction when the double-sided mirror is sandwiched between the opposing lenses in the trench.Type: ApplicationFiled: September 1, 2021Publication date: April 24, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Tatsuya FUJIMOTO, Tomohiro KAWANO, Kazuhide NAKAE, Hiroshi WATANABE, Kazunori KATAYAMA
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Patent number: 12272234Abstract: A base station used in a traffic communication system includes a communicator configured to receive, via wireless communication, information transmitted from a vehicle traveling on a road, and a controller configured to identify, based on the information received by the communicator, a traveling behavior including a travel route of the vehicle on the road. The controller is configured to execute first processing for performing statistical learning or machine learning on a plurality of the traveling behaviors respectively identified for a plurality of the vehicles traveling on the road, and second processing for determining, based on a result of the first processing, whether a traffic obstacle is present on the road and a position of the traffic obstacle on the road.Type: GrantFiled: January 10, 2022Date of Patent: April 8, 2025Assignee: KYOCERA CorporationInventors: Yuta Umehara, Tetsuo Okamoto, Hiroshi Sakai, Hiroki Fujita, Takatoshi Yoshikawa, Shinobu Fujimoto
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Publication number: 20250081750Abstract: According to one embodiment, a display device includes a partition which is provided between each adjacent pair of display elements in a display area, an electrode layer provided in a surrounding area, a conductive layer provided above the electrode layer, and an inorganic insulating layer provided between the electrode layer and the conductive layer. The partition and the conductive layer include a conductive lower portion and an upper portion which protrudes from side surfaces of the lower portion. The electrode layer includes an electrode aperture penetrating in a stacking direction. The conductive layer overlaps with the electrode aperture.Type: ApplicationFiled: August 7, 2024Publication date: March 6, 2025Applicant: Japan Display Inc.Inventors: Kazuyuki HARADA, Hiroshi TABATAKE, Hideyuki TAKAHASHI, Takamitsu FUJIMOTO
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Publication number: 20250065750Abstract: A power supply apparatus includes a power reception coil mounted to a moving object, a plurality of relay coils, and a power reception circuit connected with the power reception coil. The relay coils are configured to successively relay supply of electric power from a power transmission coil, which is arranged along a surface on which the moving object moves, to the power reception coil during movement of the moving object. Each of the relay coils includes a first coil and a second coil, which are configured to be magnetic-field-coupled respectively to the power transmission coil and the power reception coil, and a connection circuit that connects the first and second coils. The connection circuit includes at least one resonance capacitor involved in setting of a resonance frequency of at least one of the first and second coils. The at least one resonance capacitor has a parallel characteristic.Type: ApplicationFiled: November 14, 2024Publication date: February 27, 2025Applicants: DENSO CORPORATION, The University of TokyoInventors: Hayato SUMIYA, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Hiroshi FUJIMOTO, Osamu SHIMIZU
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Publication number: 20250070868Abstract: It is aimed to provide an optical node, a remote control system, and a remote control method capable of improving a communication speed of an uplink signal.Type: ApplicationFiled: January 14, 2022Publication date: February 27, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Tomohiro KAWANO, Tatsuya FUJIMOTO, Kazuhide NAKAE, Hiroshi WATANABE, Kazunori KATAYAMA
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Publication number: 20250035172Abstract: A disc brake device includes a rotary member, a brake disc, and an airflow-rate restriction member. The brake disc includes a disc body and a plurality of fins. The airflow-rate restriction member includes a base plate and a protruding portion. The base plate is sandwiched between the rotary member and the fins. The protruding portion is arranged inward in the radial direction of the disc body with respect to the fins. The protruding portion protrudes from the base plate toward a disc body side. The protruding portion extends in the circumferential direction of the disc body.Type: ApplicationFiled: October 31, 2022Publication date: January 30, 2025Inventors: Ayumi UENISHI, Takahiro FUJIMOTO, Hiroshi NOGAMI, Mitsuhiro OKAMOTO, Naruo MIYABE, Yuki ICHIKAWA, Takanori KATO, Ryuichi NISHIMURA, Yuiko SHIOTANI
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Publication number: 20250015229Abstract: A light-emitting element includes a semiconductor structure body, a light-transmissive conductive film, a light-transmissive insulating film provided with a plurality of first openings, and a light-reflective conductive film contacting the light-transmissive conductive film in the first openings. In a top view, the extending portions of a first semiconductor layer include end portions (the portion of the extending portion located closest to a side of a second outer peripheral portion), the light-transmissive conductive film includes outer edges facing the end portions of the extending portions in a second direction, respectively, the first openings are not located between a first outer peripheral portion and a first straight line passing through an outer edge closest to the second outer peripheral portion among the plurality of outer edges of the light-transmissive conductive film and extending in a first direction, and are located between the first straight line and the second outer peripheral portion.Type: ApplicationFiled: June 27, 2024Publication date: January 9, 2025Inventors: Hiroshi FUJIMOTO, Yuta MORI
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Publication number: 20240419898Abstract: A training data augmentation device (10) includes: an augmented sentence generator (11) configured to generate a plurality of augmented sentences by processing a sentence for training included in training data given in advance according to a plurality of degrees of word replacement; and an augmentation data generator (12) configured to derive a degree of association in a word pair having a dependency relationship in each augmented sentence, determine whether or not to add the augmented sentence to augmentation data for augmenting the training data for each stage based on a comparison result between an obtained degree of association and thresholds of a plurality of stages determined in advance, and generate augmentation data of a plurality of stages by an augmented sentence determined to be added.Type: ApplicationFiled: October 14, 2022Publication date: December 19, 2024Applicant: NTT DOCOMO, INC.Inventors: Akari INAGO, Hiroshi FUJIMOTO, Yuiko TSUNOMORI
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Patent number: 12115871Abstract: A wireless power receiving system includes: a power receiving device having a power receiving coil configured to receive electric power supplied wirelessly from a power transmission coil of a power transmission device installed on a road surface, at least part of the power receiving coil being contained in a vehicle wheel; and in-vehicle devices installed in a mobile object, the in-vehicle devices being energizably connected to the power receiving device. The power receiving device transmits the received electric power to the in-vehicle devices.Type: GrantFiled: July 22, 2020Date of Patent: October 15, 2024Assignees: THE UNIVERSITY OF TOKYO, BRIDGESTONE CORPORATION, NSK Ltd.Inventors: Hiroshi Fujimoto, Takehiro Imura, Osamu Shimizu, Katsuhiro Hata, Keizo Akutagawa, Yasumichi Wakao, Isao Kuwayama, Daisuke Gunji
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Publication number: 20240286492Abstract: A control system for a vehicle (1) provided with a differential mechanism (3) that applies a torque difference to left and right wheels (5) and two electric motors (2) coupled to the differential mechanism (3), the control system including: two control units (11, 12) being connected to each other via high-speed communication means and each controlling one of the two electric motors (2); a first rotation speed sensor (26R) that detects a first rotation speed of a first electric motor (2R) of the two electric motors (2) and outputs the first rotation speed to the two control units (11, 12); a second rotation speed sensor (26L) that detects a second rotation speed of a second electric motor (2L) of the two electric motors (2) and outputs the second rotation speed to the two control units (11, 12); and a superordinate control unit (10) that calculates demanded torques of the two electric motors (2) based on vehicle information of the vehicle (1).Type: ApplicationFiled: August 1, 2022Publication date: August 29, 2024Applicants: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, The University of TokyoInventors: Naoki TAKAHASHI, Hiroshi FUJIMOTO, Hiroyuki FUSE, Ryota TAKAHASHI, Yutaro OKAMURA, Ryosuke KOGA, Tetsuya FURUICHI, Akira MARUYAMA
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Patent number: 12068436Abstract: A light-emitting element includes: a semiconductor stack having a triangular shape in a top plan view, the semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer between the first and seconds semiconductor layers; a first electrode located on the first semiconductor layer and including a first connecting portion and a first extension extending from the first connecting portion; and a second electrode located on the second semiconductor layer and including a second connecting portion and a second extension extending from the second connecting portion. The first extension includes a first portion extending from the first connecting portion toward the second connecting portion. The second extension includes a second portion including a portion extending along a first side, a third portion including a portion extending along a second side, and fourth and fifth portions each including a portion extending along a third side.Type: GrantFiled: September 20, 2021Date of Patent: August 20, 2024Assignee: NICHIA CORPORATIONInventors: Hiroshi Fujimoto, Keiji Emura, Hidetoshi Tanaka
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Publication number: 20240270084Abstract: The vehicle control device (10) includes: an arithmetic unit (11) that calculates a target slip ratio (y) serving as a target value of a slip ratio (?) of the wheel (5); a limiting unit (12) that sets an upper limit value (ymax) of the target slip ratio (y), the upper limit value (ymax) being based on at least a vehicle velocity (V) of the vehicle (1), and limits the target slip ratio (y) calculated by the arithmetic unit (11) to a value equal to or less than the upper limit value (ymax); and a controlling unit (13) that controls driving torque of the vehicle (1) such that a wheel velocity that achieves the target slip ratio (y) limited by the limiting unit (12) is obtained.Type: ApplicationFiled: August 1, 2022Publication date: August 15, 2024Applicants: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, The University of TokyoInventors: Ryota TAKAHASHI, Hiroshi FUJIMOTO, Hiroyuki FUSE, Naoki TAKAHASHI, Shunsuke MATSUO, Yutaro OKAMURA, Ryosuke KOGA
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Patent number: 12001793Abstract: An object is to provide an interaction server in which inputs of an input keyword are reduced and the number of exchanges in interaction is reduced as a result. An interaction server 100 includes a truth table 104 configured to have question sentences including a sentence to be provided to a user and a plurality of searching keywords associated with, and a relational table 105 configured to have one main keyword and a plurality of related keywords related to the main keyword associated with each other. A search unit 102 acquires at least one of the one main keyword and any of the plurality of related keywords listed in the relational table 105 on the basis of an input keyword, further performs searching in the truth table 104 using the main keyword and/or the related keyword which has been acquired, and acquires a question sentence candidate which is response content corresponding to the main keyword or the related keyword.Type: GrantFiled: December 28, 2018Date of Patent: June 4, 2024Assignee: NTT DOCOMO, INC.Inventors: Hiroshi Fujimoto, Takanori Hashimoto, Yuriko Ozaki
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Patent number: 11984735Abstract: A dynamic wireless power transfer system includes a power transmission coil, a power transmission circuit, a power reception coil, a power reception circuit, and a relay circuit. The power transmission coil is provided in a road. The power transmission circuit supplies electric power to the power transmission coil. The power reception coil is provided in a vehicle. The power reception circuit is connected to the power reception coil. The relay circuit transfers electric power between the power transmission coil and the power reception coil in a contactless manner.Type: GrantFiled: January 26, 2022Date of Patent: May 14, 2024Assignees: DENSO CORPORATION, THE UNIVERSITY OF TOKYOInventors: Hayato Sumiya, Eisuke Takahashi, Nobuhisa Yamaguchi, Masaya Takahashi, Hiroshi Fujimoto, Osamu Shimizu
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Patent number: 11983527Abstract: According to one embodiment, an electronic calculator includes a processor. The processor is configured to display a screen image on which a first area displaying a source code and a second area displaying a diagram representing at least a part of the source code are arranged and edit the diagram displayed in the second area.Type: GrantFiled: August 25, 2021Date of Patent: May 14, 2024Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hirotaka Toya, Mamoru Aoki, Hiroshi Fujimoto
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Patent number: 11868734Abstract: The dialogue system includes a keyword acquisition unit configured to acquire an input key group containing one or a plurality of input keywords on the basis of an input of a character string, a category generation unit configured to classify the resulting sentence candidates into a plurality of categories on the basis of a comparison between the input key group acquired by the keyword acquisition unit and the storage key group contained in an FAQ database, an intra-category ranking determination unit configured to determine a priority ranking of the resulting sentence candidates within each of the categories, and a presentation unit configured to select a resulting sentence candidate of a highest priority ranking determined by the intra-category ranking determination unit from within a category of a highest priority ranking determined in advance, and present a response for prompting a user to make an additional input.Type: GrantFiled: January 11, 2019Date of Patent: January 9, 2024Assignee: NTT DOCOMO, INC.Inventors: Takanori Hashimoto, Hiroshi Fujimoto, Yuriko Ozaki
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Patent number: D1018490Type: GrantFiled: February 17, 2023Date of Patent: March 19, 2024Assignee: ALPS ALPINE CO., LTD.Inventors: Hideki Endo, Hiroshi Fujimoto, Masatada Muramoto
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Patent number: D1019435Type: GrantFiled: September 13, 2021Date of Patent: March 26, 2024Assignee: ALPS ALPINE CO., LTD.Inventors: Hideki Endo, Hiroshi Fujimoto