Patents by Inventor Hiroyuki Ota
Hiroyuki Ota 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: 20240128294Abstract: An image reading device includes a plurality of light receiving parts arrayed regularly, a first light blocking member including a plurality of first openings arrayed corresponding respectively to the plurality of light receiving parts, and a plurality of microlenses arrayed corresponding respectively to the plurality of first openings. Each light receiving part included in the plurality of light receiving parts includes a plurality of light receiving pixels arrayed in a first direction as a main scanning direction. Each microlens included in the plurality of microlenses is object side telecentric. The plurality of microlenses, the first light blocking member and the plurality of light receiving parts are arranged so that light reflected by an object and passing through the microlens and the first opening corresponding to the microlens enters the plurality of light receiving pixels included in the light receiving part corresponding to the first opening.Type: ApplicationFiled: February 25, 2021Publication date: April 18, 2024Applicant: Mitsubishi Electric CorporationInventors: Hiroyuki KAWANO, Naoki NAKAGAWA, Takeshi ONO, Shigeru TAKUSHIMA, Naoyuki TOKIDA, Akira OTA, Miki SUGANO
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Patent number: 11924111Abstract: A buffer unit including a plurality of buffers, a sorting unit configured to sort an input signal to any of the plurality of buffers based on header information, a rate calculation unit configured to calculate a rate at which the input signal is read from each of the plurality of buffers based on burst information of the input signal, an adjustment unit configured to adjust a rate at which the input signal is read from each of the plurality of buffers based on the rate calculated by the rate calculation unit, and a transfer unit configured to transfer the signal read from each of the plurality of buffers are provided.Type: GrantFiled: June 3, 2019Date of Patent: March 5, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Naotaka Shibata, Hiroyuki Uzawa, Noriyuki Ota, Jun Terada
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Publication number: 20240068126Abstract: A method of manufacturing monocrystalline silicon is provided, the method including pulling monocrystalline silicon out of a silicon melt by a Czochralski process, the silicon melt being stored in a crucible housed in a chamber, the silicon melt being added with a volatile dopant, in which a decompression rate ES for exhaust of a gas out of the chamber before the pulling of the monocrystalline silicon is within a range below at least until a pressure inside the chamber decreases from an atmospheric pressure to 80 kPa, 0 kPa/min<ES?4.2 kPa/min.Type: ApplicationFiled: August 23, 2023Publication date: February 29, 2024Applicant: SUMCO CORPORATIONInventors: Fukuo OGAWA, Hiroyuki OTA, Takashi OHARA
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Publication number: 20230400058Abstract: In a magnetic circuit device for a magnetic bearing that includes a permanent magnet ring constituted by a plurality of permanent magnets and a soft magnetic material ring, the circumferential uniformity of the magnetic field near an axial end surface of the permanent magnet ring is enhanced. A magnetic circuit device for a magnetic bearing includes: a permanent magnet ring that is formed by disposing a plurality of anisotropic permanent magnets in a circumferential direction; a first soft magnetic material ring that contacts an outer circumferential surface of the permanent magnet ring; and a second soft magnetic material ring that contacts an inner circumferential surface of the permanent magnet ring. Each of the plurality of anisotropic permanent magnets is magnetized parallel to a straight line that passes through a center of the anisotropic permanent magnet and that extends in a radial direction.Type: ApplicationFiled: June 1, 2023Publication date: December 14, 2023Inventor: Hiroyuki OTA
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Publication number: 20230132294Abstract: An endoscope system includes: an endoscope including a bending portion that is capable of bending; a drive device that is detachably connected to the endoscope and drives the endoscope; and an operation device that is communicably connected to the drive device and has an input portion that inputs an operation for driving the endoscope, wherein the drive device can select a method of controlling the bending portion with respect to the operation input from the input portion from fine movement control and coarse movement control, and the distance at which the drive device bends the bending portion by the coarse movement control with respect to a predetermined operation input is larger than the distance at which the drive device bends the bending portion by the fine movement control.Type: ApplicationFiled: October 19, 2022Publication date: April 27, 2023Applicant: OLYMPUS CORPORATIONInventors: Hiroyuki FUKUDA, Jun TAKAHASHI, Reisuke OSADA, Chikayoshi MEGURO, Hiroyuki OTA, Tomoki HIRASAKA, Nanaho TOGI, Yui KAWANISHI, Yukiko ASAI
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Patent number: 11560893Abstract: In a method for operation control of a compressor, full-load running in which a gas intake control valve is fully open and a target rotation speed of a drive source is set to a full-load rotation speed that is a maximum rotation speed in a speed control band when pressure of compressed gas supplied to the consumption side is a datum pressure or less is carried out; then no-load running in which the valve is fully closed and a no-load rotation speed is set as the target rotation speed of the drive source when the supply pressure is a no-load running pressure or less that is a pressure higher than the datum pressure is carried out. The no-load running is started from the standard no-load rotation speed, however, after a transition time, the target rotation speed is reduced to a low speed no-load rotation speed.Type: GrantFiled: June 12, 2019Date of Patent: January 24, 2023Assignee: HOKUETSU INDUSTRIES CO., LTD.Inventors: Takahiro Oguma, Hiroyuki Ota
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Patent number: 11451179Abstract: Disclosed are a motor control device that can accurately estimate a rotor position based on a neutral point potential even when a load increases, and a brake control device that is driven by the motor control device. The motor control device 3 includes a three-phase synchronous motor 4 including a three-phase winding, an inverter 31 connected to the three-phase winding, a control unit 6 for controlling the inverter based on a rotor position of the three-phase synchronous motor, and a rotational position estimation unit 2 for estimating a rotor position ?d based on a neutral point potential Vn of the three-phase winding. The rotational position estimation unit estimates a rotor position selectively using one or more of a plurality of detected values of the neutral point potential according to a pre-estimated value of the rotor position and a voltage application state to the three-phase winding.Type: GrantFiled: October 10, 2018Date of Patent: September 20, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Takafumi Hara, Toshiyuki Ajima, Shigehisa Aoyagi, Hiroyuki Ota, Kenichiro Matsubara
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Patent number: 11228271Abstract: Provides are a control device for a three-phase synchronous motor in which a position detection accuracy of a rotor can be improved when one three-phase synchronous motor is driven by a plurality of inverters, and an electric power steering device using the same. A control device for a three-phase synchronous motor includes: a three-phase synchronous motor including a first three-phase winding and a second three-phase winding; a first inverter connected to the first three-phase winding; a second inverter connected to the second three-phase winding; a first control device that controls the first inverter on the basis of a rotor position of the three-phase synchronous motor; and a second control device that controls the second inverter on the basis of the rotor position of the three-phase synchronous motor. The first control device estimates the rotor position on a basis of a neutral point potential of the first three-phase winding and a neutral point potential of the second three-phase winding.Type: GrantFiled: July 13, 2018Date of Patent: January 18, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Takafumi Hara, Shigehisa Aoyagi, Toshiyuki Ajima, Hiroyuki Ota, Yoshitaka Sugiyama
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Patent number: 11114565Abstract: Power consumption of a semiconductor device is reduced by sharpening the rise of a drain current when a gate voltage of a field effect transistor is less than a threshold voltage. As means therefor, in a fully-depleted MOSFET in which a thickness of a semiconductor layer serving as a channel region is 20 nm or less, a gate plug connected to a gate electrode is constituted of a first plug, a ferroelectric film, and a second plug sequentially stacked on the gate electrode. Here, an area where a contact surface between the first plug and the ferroelectric film and a contact surface between the ferroelectric film and the second plug overlap in a plan view is smaller than an area where the gate electrode and a semiconductor layer serving as an active region overlap.Type: GrantFiled: September 11, 2018Date of Patent: September 7, 2021Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Hiroyuki Ota, Shinji Migita
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Publication number: 20210250688Abstract: The disclosure of the present specification aims to provide a directivity control system for speakers, which is capable of easily controlling directivity of acoustic data to provide desired sound fields with a plurality of speakers, and freely producing sound fields with high accuracy. A plurality of physically connected speaker units are virtually arrayed at respective directivity angles according to control signals that define the directivity angles. Virtual delay time data is calculated for the case where data is outputted with the virtual array, and output is performed according to output data affected by the delay time data, so that desired sound fields can be formed with the speaker units remaining fixed, without the necessity of mechanically rotating the speaker units.Type: ApplicationFiled: June 12, 2019Publication date: August 12, 2021Applicant: DREAM INCORPORATEDInventors: Masanobu NORIYUKI, Hiroyuki OTA, Akira MASU
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Patent number: 11089403Abstract: The disclosure of the present specification aims to provide a directivity control system for speakers, which is capable of easily controlling directivity of acoustic data to provide desired sound fields with a plurality of speakers, and freely producing sound fields with high accuracy. A plurality of physically connected speaker units are virtually arrayed at respective directivity angles according to control signals that define the directivity angles. Virtual delay time data is calculated for the case where data is outputted with the virtual array, and output is performed according to output data affected by the delay time data, so that desired sound fields can be formed with the speaker units remaining fixed, without the necessity of mechanically rotating the speaker units.Type: GrantFiled: June 12, 2019Date of Patent: August 10, 2021Assignee: Dream IncorporatedInventors: Masanobu Noriyuki, Hiroyuki Ota, Akira Masu
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Publication number: 20210091700Abstract: Provides are a control device for a three-phase synchronous motor in which a position detection accuracy of a rotor can be improved when one three-phase synchronous motor is driven by a plurality of inverters, and an electric power steering device using the same. A control device for a three-phase synchronous motor includes: a three-phase synchronous motor including a first three-phase winding and a second three-phase winding; a first inverter connected to the first three-phase winding; a second inverter connected to the second three-phase winding; a first control device that controls the first inverter on the basis of a rotor position of the three-phase synchronous motor; and a second control device that controls the second inverter on the basis of the rotor position of the three-phase synchronous motor. The first control device estimates the rotor position on a basis of a neutral point potential of the first three-phase winding and a neutral point potential of the second three-phase winding.Type: ApplicationFiled: July 13, 2018Publication date: March 25, 2021Inventors: Takafumi HARA, Shigehisa AOYAGI, Toshiyuki AJIMA, Hiroyuki OTA, Yoshitaka SUGIYAMA
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Publication number: 20200244203Abstract: Disclosed are a motor control device that can accurately estimate a rotor position based on a neutral point potential even when a load increases, and a brake control device that is driven by the motor control device. The motor control device 3 includes a three-phase synchronous motor 4 including a three-phase winding, an inverter 31 connected to the three-phase winding, a control unit 6 for controlling the inverter based on a rotor position of the three-phase synchronous motor, and a rotational position estimation unit 2 for estimating a rotor position ?d based on a neutral point potential Vn of the three-phase winding. The rotational position estimation unit estimates a rotor position selectively using one or more of a plurality of detected values of the neutral point potential according to a pre-estimated value of the rotor position and a voltage application state to the three-phase winding.Type: ApplicationFiled: October 10, 2018Publication date: July 30, 2020Inventors: Takafumi HARA, Toshiyuki AJIMA, Shigehisa AOYAGI, Hiroyuki OTA, Kenichiro MATSUBARA
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Publication number: 20200243687Abstract: Power consumption of a semiconductor device is reduced by sharpening the rise of a drain current when a gate voltage of a field effect transistor is less than a threshold voltage. As means therefor, in a fully-depleted MOSFET in which a thickness of a semiconductor layer serving as a channel region is 20 nm or less, a gate plug connected to a gate electrode is constituted of a first plug, a ferroelectric film, and a second plug sequentially stacked on the gate electrode. Here, an area where a contact surface between the first plug and the ferroelectric film and a contact surface between the ferroelectric film and the second plug overlap in a plan view is smaller than an area where the gate electrode and a semiconductor layer serving as an active region overlap.Type: ApplicationFiled: September 11, 2018Publication date: July 30, 2020Inventors: Hiroyuki Ota, Shinji Migita
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Patent number: 10636751Abstract: A semiconductor device 100 of the present invention includes a front end and back ends A and B, each including a plurality of layers. Further, in the plurality of layers of the back end B, (i) circuits 22, 23, and 24 having a security function are provided in at least one layer having a wiring pitch of 100 nm or more, (ii) a circuit having a security function is provided in at least one wiring layer in M5 or higher level (M5, M6, M7, . . . ), (iii) a circuit having a security function is provided in at least one layer, for which immersion ArF exposure does not need to be used, or (iv) a circuit having a security function is provided in at least one layer that is exposed by using an exposure wavelength of 200 nm or more.Type: GrantFiled: August 3, 2016Date of Patent: April 28, 2020Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGYInventors: Yohei Hori, Yongxun Liu, Shinichi Ouchi, Tetsuji Yasuda, Meishoku Masahara, Toshifumi Irisawa, Kazuhiko Endo, Hiroyuki Ota, Tatsuro Maeda, Hanpei Koike, Yasuhiro Ogasahara, Toshihiro Katashita, Koichi Fukuda
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Publication number: 20200032801Abstract: In a method for operation control of a compressor, full-load running in which a gas intake control valve is fully open and a target rotation speed of a drive source is set to a full-load rotation speed that is a maximum rotation speed in a speed control band when pressure of compressed gas supplied to the consumption side is a datum pressure or less is carried out; then no-load running in which the valve is fully closed and a no-load rotation speed is set as the target rotation speed of the drive source when the supply pressure is a no-load running pressure or less that is a pressure higher than the datum pressure is carried out. The no-load running is started from the standard no-load rotation speed, however, after a transition time, the target rotation speed is reduced to a low speed no-load rotation speed.Type: ApplicationFiled: June 12, 2019Publication date: January 30, 2020Inventors: Takahiro OGUMA, Hiroyuki OTA
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Patent number: 10318745Abstract: To provide a system for simplifying setting of access control for a file system and a firewall, it is provided an access control system, which is formed by a computer including a processor configured to execute a process, and a memory configured to store a program for executing the process, the access control system comprising: a launcher, which is a process configured to activate the process; an ACL file in which specifics for controlling an I/O request issued by the process are defined; a process search module configured to trace a parent of the process to determine whether or not the process is an activated process that has originated from the launcher; and an access control module configured to control an I/O request issued by the activated process that has originated from the launcher in accordance with the specifics defined in the ACL file.Type: GrantFiled: January 6, 2016Date of Patent: June 11, 2019Assignee: Hitachi Solutions, Ltd.Inventors: Yuuichi Kiyokawa, Kouji Inoue, Ryuuji Nakayama, Hiroyuki Ota
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Publication number: 20190019766Abstract: A semiconductor device 100 of the present invention includes a front end and back ends A and B, each including a plurality of layers. Further, in the plurality of layers of the back end B, (i) circuits 22, 23, and 24 having a security function are provided in at least one layer having a wiring pitch of 100 nm or more, (ii) a circuit having a security function is provided in at least one wiring layer in M5 or higher level (M5, M6, M7, . . . ), (iii) a circuit having a security function is provided in at least one layer, for which immersion ArF exposure does not need to be used, or (iv) a circuit having a security function is provided in at least one layer that is exposed by using an exposure wavelength of 200 nm or more.Type: ApplicationFiled: August 3, 2016Publication date: January 17, 2019Inventors: Yohei Hori, Yongxun Liu, Shinichi Ouchi, Tetsuji Yasuda, Meishoku Masahara, Toshifumi Irisawa, Kazuhiko Endo, Hiroyuki Ota, Tatsuro Maeda, Hanpei Koike, Yasuhiro Ogasahara, Toshihiro Katashita, Koichi Fukuda
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Patent number: D933820Type: GrantFiled: March 4, 2020Date of Patent: October 19, 2021Assignee: OLYMPUS CORPORATIONInventor: Hiroyuki Ota
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Patent number: D1022196Type: GrantFiled: July 7, 2020Date of Patent: April 9, 2024Assignee: OLYMPUS CORPORATIONInventors: Hiroyuki Ota, Yui Kawanishi