Patents by Inventor Takashi Kumagai

Takashi Kumagai 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).

  • Patent number: 10410423
    Abstract: An HUD superimposes a display object, as a stereoscopic image or a planar image, on an actual scene. A display control device acquires information about a moving object and information about surrounding and estimates a relative distance between a display obstacle and the moving object. When it is determined that the display obstacle exists or can exist between the display object and the moving object, the display control device changes the display mode of the display object in accordance with the amount of change in the relative distance and notifies the HUD of the display mode.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: September 10, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuhei Ota, Takashi Hirano, Taro Kumagai
  • Patent number: 10404178
    Abstract: An insulation type step-up converter includes a core, first and second primary-side coils, a secondary-side coil, and a switching element. The core includes a middle leg, and first and second outer legs. The switching element is configured such that it can be controlled to be on/off so that electric currents flowing simultaneously in the first and second primary-side coils are opposite in direction to each other.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: September 3, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Nakajima, Takashi Kumagai, Yuji Shirakata, Yujiro Kido
  • Publication number: 20190221354
    Abstract: An air core type reactor unit, includes a first insulating plate which is provided with a first insulating spacer on one side, a first ferromagnetic member metal plate fixed to an insulating plate, two or more air core coils each having an air core part and formed of coil layers with the separation of an air gap, a second insulating plate, which is provided with a second insulating spacer on another side thereof and has a width smaller than an inside diameter of the coil, to incorporate more air into, a second ferromagnetic member metal plate fixed to an insulating plate, and an insulating stick passing through the air core part of the air core coils, wherein the air core coils are arranged in parallel, and held and fixed between the first insulating plate and the second insulating plate through the first insulating spacer and the second insulating spacer.
    Type: Application
    Filed: August 9, 2016
    Publication date: July 18, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Toshihiro YOSHIDA, Hajime Nakatani, Daisuke Takauchi, Takashi Kumagai, Kenji Shimohata, Taichiro Tamida
  • Publication number: 20190199411
    Abstract: A base station includes a processor and a plurality of antennas that transmit, to each of terminals, first and second wireless signals to form first and second beams, respectively, and receive, from each terminal, a third wireless signal including feedback information of the terminal in response to the second wireless signal. The processor selects, from among the terminals, based on the feedback information and a correlation value between the first beam and the second beam, a terminal to which the second beam is optimum, as a first terminal that performs communication via the first beam, or selects a terminal as a second terminal that performs communication via the second beam while communication via the first beam is performed in parallel. The plurality of antennas transmit a fourth wireless signal including data to each terminal apparatus to form the first beam or the second beam.
    Type: Application
    Filed: December 16, 2018
    Publication date: June 27, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Shinya Kumagai, Teppei Oyama, Takashi Seyama
  • Publication number: 20190200000
    Abstract: A calibrating method includes controlling a laser radiator to radiate calibration laser light to an object such that a pattern is projected in a laser coordinate system with respect to the laser radiator; controlling a camera to obtain a first image of first light points of the calibration laser light projected on a surface of the object when the object is in a first position; and controlling the camera to obtain a second image of second light points of the calibration laser light projected on the surface of the object when the object is in the second position. A positional relationship between the laser coordinate system and the camera coordinate system is calculated based on the three-dimensional positions of the first light points and the three-dimensional positions of the second light points.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Hiroshi KUMAGAI, Takashi MOTOYOSHI, Seiichiro FUKUSHIMA
  • Publication number: 20190172334
    Abstract: According to one embodiment, a method executed by an electronic apparatus including storage configured to store device information including first position information indicating a position of a device installed in a particular range and risk information associated with use of the device is provided. The method includes receiving second position information indicating a position of a user wearing an eyeglasses-type wearable terminal and working within the particular range, from the eyeglasses-type wearable terminal and estimating a status of the user, based at least in part on the first position information and the risk information included in the device information, and the second position information.
    Type: Application
    Filed: February 1, 2019
    Publication date: June 6, 2019
    Inventors: Takashi Sudo, Akira Tanaka, Kenichi Doniwa, Hiroaki Komaki, Hiroki Kumagai, Yasuhiro Kanishima, Nobuhide Okabayashi
  • Publication number: 20190172622
    Abstract: A power supply device for an ozone generator, which supplies electric power to the ozone generator, is configured such that: a transformer, an inverter, and a reactor are disposed inside of one housing; a flat heat exchanger which cools passing air with cooling water is disposed at a lower part inside of the housing; the transformer and the inverter are disposed above the heat exchanger; the reactor is disposed above the transformer and the inverter; a protection panel is disposed further toward the front side of the housing than the transformer and the inverter by being separated from a front door of the housing; and cooling air is circulated in the housing by means of a fan that disposed at a position inside of the front door.
    Type: Application
    Filed: August 9, 2016
    Publication date: June 6, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Daisuke TAKAUCHI, Yoshiaki ODAI, Hajime NAKATANI, Toshihiro YOSHIDA, Takashi KUMAGAI, Kenji SHIMOHATA, Satoru ISHIZAKA, Taichiro TAMIDA
  • Patent number: 10298312
    Abstract: There is provided a wireless base station that stores information on a plurality of different first precodings and information on a plurality of different reception weights; transmits, from antennas, a plurality of downlink reference signals, each of which is obtained by applying one of the first precodings; receives information on reception quality of the downlink reference signals from wireless terminals; selects at least one from the wireless terminals based on the information on reception quality; determines wireless resource allocation for allowing the selected wireless terminal to transmit an uplink reference signal; notifies the selected wireless terminal of the wireless resource allocation; and receives the uplink reference signal transmitted from the selected wireless terminal by applying each of the reception weights to the uplink reference signal.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: May 21, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Shinya Kumagai, Takashi Seyama
  • Publication number: 20190147261
    Abstract: Included are a detection information acquiring unit (101) for acquiring detection information showing that an operator's input operation has been detected; a vehicle information acquiring unit (102) for acquiring vehicle information showing the travelling state of a vehicle; an identification processing unit (104) for identifying the operator who has performed the input operation; and a control unit (103) for controlling either output of the detection information or a start of a voice recognition process of recognizing the operator's voice, on the basis of either the vehicle information or the vehicle information and a result of the identification by the identification processing unit.
    Type: Application
    Filed: June 8, 2016
    Publication date: May 16, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yumi HOSHINA, Taro KUMAGAI, Takashi HIRANO, Masanobu OSAWA
  • Publication number: 20190110355
    Abstract: Provided is a highly reliable power circuit device. The power circuit device includes a printed substrate, a power circuit, and a housing. The power circuit is formed on the printed substrate. The housing is connected with the printed substrate. The power circuit includes secondary-side switching elements, at least one smoothing choke coil, and smoothing capacitors. Portions of a smoothing choke coil core serving as a core of the smoothing choke coil are inserted in opening portions formed in the printed substrate. A winding of the smoothing choke coil is formed on the printed substrate. The smoothing choke coil is located between a region C in which the smoothing capacitors are arranged and regions A and B serving as a second region in which primary-side switching elements and the secondary-side switching elements serving as electric elements are arranged.
    Type: Application
    Filed: April 25, 2017
    Publication date: April 11, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shota SATO, Koji NAKAJIMA, Takashi KUMAGAI, Yuji SHIRAKATA
  • Publication number: 20190108937
    Abstract: An insulation type step-up converter includes a core, first and second primary-side coils, a secondary-side coil, and a switching element. The core includes a middle leg, and first and second outer legs. The switching element is configured such that it can be controlled to be on/off so that electric currents flowing simultaneously in the first and second primary-side coils are opposite in direction to each other.
    Type: Application
    Filed: November 4, 2017
    Publication date: April 11, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji NAKAJIMA, Takashi KUMAGAI, Yuji SHIRAKATA, Yujiro KIDO
  • Publication number: 20190103212
    Abstract: A circuit apparatus includes: a core including a first core portion and a second core portion; and a first heat transfer member arranged between the first core portion and the second core portion. The first heat transfer member is in surface contact with a first side surface of the first core portion and a second side surface of the second core portion. The first heat transfer member is thermally connected to a coil. Thus, the rise in temperature of the core during operation of the circuit apparatuses can be more uniformly suppressed.
    Type: Application
    Filed: May 9, 2017
    Publication date: April 4, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kenta Fujii, Koji Nakajima, Takashi Kumagai
  • Publication number: 20190066906
    Abstract: A power conversion device includes: planar type coil components having plate-like winding members and cores attached to the winding members; a housing having recessed portions in which the coil components are accommodated in vertical arrangement; and fillers with which gaps between the recessed portions and the coil components are filled.
    Type: Application
    Filed: April 25, 2016
    Publication date: February 28, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takashi HIRATSUKA, Takashi KUMAGAI, Yasunori OTSUKA, Yuichiro OBAYASHI
  • Patent number: 10199159
    Abstract: An insulation type step-down converter includes first and second step-down transformers each of which includes an input-side coil and an output-side coil. First, second, third, and fourth rectifier elements are connected in series with first, second, third, and fourth series coils, respectively, the first, second, third, and fourth series coils each having the output-side coil of the first step-down transformer and the output-side coil of the second step-down transformer connected in series. The first to fourth series coils are connected to smoothing coils. The connection is such that electric currents flow simultaneously only in one of the first and second series coils and one of the third and fourth series coils in an alternate manner, and electric currents flowing simultaneously in one of the first and second series coils and one of the third and fourth series coils are opposite in direction to each other.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: February 5, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Nakajima, Takashi Kumagai, Yuji Shirakata, Yujiro Kido
  • Publication number: 20190019609
    Abstract: A circuit device and a power converter include a core, a coil surrounding at least a part of the core, and a first heat transfer member being in surface contact with the core. A temperature rise of the core can thus be prevented or reduced.
    Type: Application
    Filed: January 4, 2017
    Publication date: January 17, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kenta FUJII, Koji NAKAJIMA, Yuji SHIRAKATA, Jun TAHARA, Takashi KUMAGAI
  • Publication number: 20180350514
    Abstract: An insulation type step-down converter includes first and second step-down transformers each of which includes an input-side coil and an output-side coil. First, second, third, and fourth rectifier elements are connected in series with first, second, third, and fourth series coils, respectively, the first, second, third, and fourth series coils each having the output-side coil of the first step-down transformer and the output-side coil of the second step-down transformer connected in series. The first to fourth series coils are connected to smoothing coils. The connection is such that electric currents flow simultaneously only in one of the first and second series coils and one of the third and fourth series coils in an alternate manner, and electric currents flowing simultaneously in one of the first and second series coils and one of the third and fourth series coils are opposite in direction to each other.
    Type: Application
    Filed: November 25, 2015
    Publication date: December 6, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji NAKAJIMA, Takashi KUMAGAI, Yuji SHIRAKATA, Yujiro KIDO
  • Publication number: 20180261382
    Abstract: A power converter includes a magnetic core and a plurality of windings. The plurality of windings are each wound around the magnetic core and bent to have a portion extending in the direction in which the magnetic core extends. Each of the plurality of windings is bent to include a region located farthest out from the magnetic core among all of the plurality of windings.
    Type: Application
    Filed: August 24, 2016
    Publication date: September 13, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji NAKAJIMA, Takashi KUMAGAI, Jun TAHARA
  • Publication number: 20180174739
    Abstract: A power converter includes a magnetic core, a plurality of windings, a plurality of metal sidewalls, a first insulating member, and a second insulating member. The plurality of windings are each wound around the magnetic core and bent to have a portion extending in a direction in which the magnetic core extends. The plurality of metal sidewalls are disposed outside the plurality of windings and extend in the direction in which the magnetic core extends. The first insulating member is disposed between the plurality of windings and between the windings and the magnetic core. The second insulating member is disposed on an outside of the plurality of windings and in contact with each of the plurality of sidewalls and each of the plurality of windings. The second insulating member has a thermal conductivity higher than a thermal conductivity of the first insulating member.
    Type: Application
    Filed: August 4, 2016
    Publication date: June 21, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji NAKAJIMA, Takashi KUMAGAI, Jun TAHARA
  • Patent number: 9973733
    Abstract: A communication system includes a terminal having a first storage section for storing a number of pieces of content information, a second storage section for storing a number of pieces of the content information, a storage control section for placing a content ID stored in the second storage section into purchase information for each terminal and stored in the second storage section, an access control section for controlling access to the content information corresponding to the content ID stored in the second storage section, and an accounting setting section for setting an amount of a fee to be imposed on the terminal in response to the purchase information.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: May 15, 2018
    Assignee: SONY CORPORATION
    Inventors: Takashi Kumagai, Izuru Tanaka
  • Patent number: 9960697
    Abstract: An insulation type step-down converter includes first, second, third, and fourth secondary-side coils, and first, second, third, and fourth rectifier elements. The first, second, third, and fourth rectifier elements is capable of performing rectification such that electric currents flow alternately only in one of the first and second secondary-side coils and one of the third and fourth secondary-side coils, and electric currents flowing simultaneously in one of the first and second secondary-side coils and one of the third and fourth secondary-side coils are opposite in direction to each other so as to cancel out a magnetic flux passing through the middle leg each time when electric current flowing in the primary-side coil is changed in direction. Provided is an insulation type step-down converter which can minimize an increase in heat generated by the primary-side coil even at a large step-down ratio of a step-down transformer without raising manufacturing costs.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: May 1, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Nakajima, Takashi Kumagai, Yuji Shirakata, Yujiro Kido