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).

  • Publication number: 20240128294
    Abstract: 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: Application
    Filed: February 25, 2021
    Publication date: April 18, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroyuki KAWANO, Naoki NAKAGAWA, Takeshi ONO, Shigeru TAKUSHIMA, Naoyuki TOKIDA, Akira OTA, Miki SUGANO
  • Patent number: 11924111
    Abstract: 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: Grant
    Filed: June 3, 2019
    Date of Patent: March 5, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Naotaka Shibata, Hiroyuki Uzawa, Noriyuki Ota, Jun Terada
  • Publication number: 20240068126
    Abstract: 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: Application
    Filed: August 23, 2023
    Publication date: February 29, 2024
    Applicant: SUMCO CORPORATION
    Inventors: Fukuo OGAWA, Hiroyuki OTA, Takashi OHARA
  • Publication number: 20230400058
    Abstract: 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: Application
    Filed: June 1, 2023
    Publication date: December 14, 2023
    Inventor: Hiroyuki OTA
  • Publication number: 20230132294
    Abstract: 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: Application
    Filed: October 19, 2022
    Publication date: April 27, 2023
    Applicant: OLYMPUS CORPORATION
    Inventors: Hiroyuki FUKUDA, Jun TAKAHASHI, Reisuke OSADA, Chikayoshi MEGURO, Hiroyuki OTA, Tomoki HIRASAKA, Nanaho TOGI, Yui KAWANISHI, Yukiko ASAI
  • Patent number: 11560893
    Abstract: 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: Grant
    Filed: June 12, 2019
    Date of Patent: January 24, 2023
    Assignee: HOKUETSU INDUSTRIES CO., LTD.
    Inventors: Takahiro Oguma, Hiroyuki Ota
  • Patent number: 11451179
    Abstract: 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: Grant
    Filed: October 10, 2018
    Date of Patent: September 20, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Takafumi Hara, Toshiyuki Ajima, Shigehisa Aoyagi, Hiroyuki Ota, Kenichiro Matsubara
  • Patent number: 11228271
    Abstract: 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: Grant
    Filed: July 13, 2018
    Date of Patent: January 18, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Takafumi Hara, Shigehisa Aoyagi, Toshiyuki Ajima, Hiroyuki Ota, Yoshitaka Sugiyama
  • Patent number: 11114565
    Abstract: 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: Grant
    Filed: September 11, 2018
    Date of Patent: September 7, 2021
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Hiroyuki Ota, Shinji Migita
  • Publication number: 20210250688
    Abstract: 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: Application
    Filed: June 12, 2019
    Publication date: August 12, 2021
    Applicant: DREAM INCORPORATED
    Inventors: Masanobu NORIYUKI, Hiroyuki OTA, Akira MASU
  • Patent number: 11089403
    Abstract: 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: Grant
    Filed: June 12, 2019
    Date of Patent: August 10, 2021
    Assignee: Dream Incorporated
    Inventors: Masanobu Noriyuki, Hiroyuki Ota, Akira Masu
  • Publication number: 20210091700
    Abstract: 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: Application
    Filed: July 13, 2018
    Publication date: March 25, 2021
    Inventors: Takafumi HARA, Shigehisa AOYAGI, Toshiyuki AJIMA, Hiroyuki OTA, Yoshitaka SUGIYAMA
  • Publication number: 20200244203
    Abstract: 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: Application
    Filed: October 10, 2018
    Publication date: July 30, 2020
    Inventors: Takafumi HARA, Toshiyuki AJIMA, Shigehisa AOYAGI, Hiroyuki OTA, Kenichiro MATSUBARA
  • Publication number: 20200243687
    Abstract: 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: Application
    Filed: September 11, 2018
    Publication date: July 30, 2020
    Inventors: Hiroyuki Ota, Shinji Migita
  • Patent number: 10636751
    Abstract: 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: Grant
    Filed: August 3, 2016
    Date of Patent: April 28, 2020
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: 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
  • Publication number: 20200032801
    Abstract: 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: Application
    Filed: June 12, 2019
    Publication date: January 30, 2020
    Inventors: Takahiro OGUMA, Hiroyuki OTA
  • Patent number: 10318745
    Abstract: 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: Grant
    Filed: January 6, 2016
    Date of Patent: June 11, 2019
    Assignee: Hitachi Solutions, Ltd.
    Inventors: Yuuichi Kiyokawa, Kouji Inoue, Ryuuji Nakayama, Hiroyuki Ota
  • Publication number: 20190019766
    Abstract: 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: Application
    Filed: August 3, 2016
    Publication date: January 17, 2019
    Inventors: 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
  • Patent number: D933820
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: October 19, 2021
    Assignee: OLYMPUS CORPORATION
    Inventor: Hiroyuki Ota
  • Patent number: D1022196
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: April 9, 2024
    Assignee: OLYMPUS CORPORATION
    Inventors: Hiroyuki Ota, Yui Kawanishi