Patents by Inventor Kenji Nagashima

Kenji Nagashima 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: 10859708
    Abstract: A test signal generator generates a first test signal. A test signal transmitter transmits the first test signal. An RF receiver unit receives the first test signal and a first satellite signal through a receiving antenna, and generates a second test signal and a second satellite signal, respectively. Each of first and second demodulators calculates a correlation value between the second satellite signal and the spreading code to acquire a satellite. A first failure detector unit compares a signal intensity of the second test signal with a threshold to generate a first failure detection signal. A second failure detector compares the satellites acquired by the first and second demodulator to generate a second failure detection signal. A state determiner determines whether and where a failure exists, using the first and second failure detection signals.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: December 8, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomoaki Takewa, Wataru Tsujita, Yoshitsugu Sawa, Kenji Kataoka, Tadashi Yamamoto, Seiya Nagashima
  • Patent number: 10802270
    Abstract: Provided is an optical scanner including: a mirror driving unit which drives a scanning mirror which reflects light from a light source based on a drive signal; an optical sensor which detects scanning light entering first and second detection positions set on both sides of a range of the maximum scan angle within the range; and a calibrating unit which calibrates the intensity of the drive signal based on the time point at which the detection is performed and the frequency and intensity of the drive signal.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: October 13, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Naoya Matsumaru, Kenji Nagashima
  • Patent number: 10686292
    Abstract: A laser module has a base portion having a metal holding portion; a laser light source fixed to the base portion; an optical outputting portion deriving the laser light from a collimating optical system out of the base portion. The collimating optical system includes an input lens receiving the laser light from the laser light source; and an output lens receiving the laser light from the input lens and outputting the laser light to the optical outputting portion, each located in order from the laser light source. The input lens is a convex lens fixed in a first cylinder body made of metal and welded to the holding portion. The output lens is a convex lens having a focal point length longer than that of the input lens and held by the holding member glued to the base portion.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: June 16, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Daisuke Nagatomo, Yoshio Okamoto, Takashi Nakai, Kenji Nagashima
  • Publication number: 20200176809
    Abstract: Present disclosure provides a lithium ion secondary battery element in which a positive electrode including a positive electrode active material layer formed by applying a positive electrode active material mixture, a separator, and a negative electrode including a negative electrode active material layer formed by applying a negative electrode active material mixture are stacked.
    Type: Application
    Filed: June 25, 2018
    Publication date: June 4, 2020
    Applicant: Envision AESC Japan Ltd.
    Inventors: Shin Tanaka, Kenji Ohara, Satoshi Nagashima, Jiro Iriyama
  • Publication number: 20200168994
    Abstract: In an antenna, the outer conductor is formed of a first linear conductor, the first linear conductor having a length corresponding to one wavelength of a right-handed circularly polarized wave and circularly extended from a first feed point to a second feed point. The inner conductor is disposed inside the outer conductor and formed of a second linear conductor, the second linear conductor being different from the first linear conductor and having a length determined based on one wavelength of a left-handed circularly polarized wave. The inner conductor has a starting point of the second linear conductor connected to the first feed point and has an end point of the second linear conductor kept free from connection at a location inside the outer conductor, and causes current to flow in a direction opposite to the current flow in the outer conductor.
    Type: Application
    Filed: January 30, 2020
    Publication date: May 28, 2020
    Applicant: Yazaki Corporation
    Inventors: Eita ITOU, Kunihiko YAMADA, Yoshikazu NAGASHIMA, Kenji MATSUSHITA, Tatsuo TOBA
  • Patent number: 10640134
    Abstract: Based on a ratio between Doppler frequencies calculated from a plurality of reception signals outputted by a receiver, a position detector calculates a relative position of a plurality of antennas in a mobile wireless apparatus to a stationary wireless apparatus. A train position detector calculates a position of a train from the calculated relative position, a placement position of the stationary wireless apparatus and placement positions in the train of the plurality of antennas.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: May 5, 2020
    Assignee: Misubishi Electric Corporation
    Inventors: Wataru Tsujita, Kenji Inomata, Seiya Nagashima, Kazuhiro Tahara
  • Patent number: 10501101
    Abstract: A train-position detection device includes: a radio-wave's angle-of-arrival calculator configured to calculate an angle of arrival of a radio wave on the basis of a reception signal received by an array antenna and a receiver; a position acquisition unit configured to acquire information on an installation position of a ground-based wireless communication apparatus from the reception signal; a train-position calculator configured to calculate a train position on the basis of a movement distance of a train; a correction-amount-to-train-position calculator configured to calculate a train-position correction amount, by using the calculated angle of arrival, the installation position of the ground-based wireless communication apparatus acquired by the position acquisition unit, and the calculated train position; and a train-position correcting unit configured to correct the calculated train position by using the train-position correction amount calculated by the correction-amount-to-train-position calculator.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: December 10, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Wataru Tsujita, Seiya Nagashima, Tadashi Yamamoto, Kazuhiro Tahara, Kenji Kataoka
  • Patent number: 10466664
    Abstract: An evaluation device carries out evaluation for BESS that is a power storage system that includes a chargeable and dischargeable battery and provides a power stabilization service with respect to a power transmission network by using the battery. The evaluation device includes an information acquisition unit that acquires input information including at least specification information relating to specifications of the BESS, an estimation unit that estimates a life of the battery and a pecuniary profit in compensation for the service on the basis of the input information that is acquired by the information acquisition unit, and an optimization unit that determines a value of a control parameter, which is optimal for control of an operation of the BESS, on the basis of the life of the battery and the pecuniary profit which are estimated by the estimation unit.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: November 5, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Fanny Matthey, Kenji Takeda, Takashi Kamijoh, Yuuji Nagashima
  • Publication number: 20190326725
    Abstract: A laser module has a base portion having a metal holding portion; a laser light source fixed to the base portion; an optical outputting portion deriving the laser light from a collimating optical system out of the base portion. The collimating optical system includes an input lens receiving the laser light from the laser light source; and an output lens receiving the laser light from the input lens and outputting the laser light to the optical outputting portion, each located in order from the laser light source. The input lens is a convex lens fixed in a first cylinder body made of metal and welded to the holding portion. The output lens is a convex lens having a focal point length longer than that of the input lens and held by the holding member glued to the base portion.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Daisuke NAGATOMO, Yoshio OKAMOTO, Takashi NAKAI, Kenji NAGASHIMA
  • Publication number: 20190187459
    Abstract: Provided is an optical scanner including: a mirror driving unit which drives a scanning mirror which reflects light from a light source based on a drive signal; an optical sensor which detects scanning light entering first and second detection positions set on both sides of a range of the maximum scan angle within the range; and a calibrating unit which calibrates the intensity of the drive signal based on the time point at which the detection is performed and the frequency and intensity of the drive signal.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 20, 2019
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventors: Naoya Matsumaru, Kenji Nagashima
  • Patent number: 10294144
    Abstract: There is provided an optical glass having high infrared transmittance and being useful as an on-vehicle infrared sensor and the like. An optical glass including, in expression of atomic %: Ge+Ga; 6% to 30%; S+Se+Te; 50% to 85%; and Ti; 0.001% to 0.5%, wherein a wavelength (?T10%) at a long-wavelength side end in which infrared transmittance in a glass plate of the optical glass converted to a thickness of 1 mm becomes 10% is 12 ?m or more.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 21, 2019
    Assignee: AGC Inc.
    Inventors: Tatsuo Nagashima, Hiroyasu Miyazawa, Kenji Kitaoka
  • Patent number: 10151575
    Abstract: A position sensing device includes at least one light receiver, and a processor. The light receiver receives lights that are emitted from a plurality of light exit positions of a scanning light source component to scan a predetermined area and are reflected by a sensing object within the predetermined area. The processor controls the scanning light source component, and senses position of the sensing object based on a light reception signal of the light receiver. The processor further determines from which of the scanning lights the light reception signal is obtained, and senses the position of the sensing object based on optical paths of the scanning lights.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: December 11, 2018
    Assignee: FUNAI ELECTRIC CO., LTD.
    Inventors: Atsuhiko Chikaoka, Ken Nishioka, Kenji Nagashima, Kazuhiro Takahashi
  • Patent number: 10051247
    Abstract: An image projection apparatus includes laser light sources that each emit laser light; a beam combiner combining the laser lights; a beam deflector periodically changing a traveling direction of the combined laser lights and directing the laser lights to a screen; and a controller controlling a drive current supplied to the laser light sources based on a relationship between the drive current and a total light intensity outputted from the laser light sources, in which the total light intensity comprises three ranges, the controller supplies the drive current to the laser light sources when the laser lights are emitted in the total light intensity included in either the first or the third range, and the controller supplies the drive current to at least one or some of the laser light sources when the combined laser lights are emitted in the total light intensity included in the second range.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 14, 2018
    Assignee: Funai Electric Co., Ltd.
    Inventors: Kenji Nagashima, Toyoshi Nogami, Tatsuya Ito
  • Patent number: 9903987
    Abstract: A laser optical device is provided with a plurality of laser light sources, a collimating lens that has an optical axis that intersects a line connecting the plurality of laser light sources in a plan view viewed from a direction perpendicular to both this line and the optical axis and collimates lights respectively emitted from the plurality of laser light sources, and a deflecting element that deflects a plurality of lights emitted from the collimating lens so output lights where the lights respectively emitted from the plurality of laser light sources are optically processed make contact.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: February 27, 2018
    Assignee: Funai Electric Co., Ltd.
    Inventors: Kenji Nagashima, Toyoshi Nogami, Tatsuya Ito
  • Patent number: 9826205
    Abstract: This display includes a control portion controlling a laser beam generation portion to output a first laser beam including a region of relaxation oscillation to a partial first image forming element included in a plurality of image forming elements and to output a second laser beam including no region of relaxation oscillation to a second image forming element, other than the first image forming element, included in the plurality of image forming elements.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: November 21, 2017
    Assignee: Funai Electric Co., Ltd.
    Inventors: Ken Nishioka, Atsuhiko Chikaoka, Kenji Nagashima, Takatoshi Nishimura, Yasunori Higashiyama
  • Patent number: 9791711
    Abstract: To prevent effectively the flickering of an image due to the switching of a polarization direction while reducing speckle noise. A polarization switching unit is provided in an optical path of laser light to a projection surface A and periodically switches a polarization direction of the laser light emitted therefrom between p and S polarization. A laser control unit controls laser light sources in synchronization with the switching by the polarization switching unit and determines a driving current corresponding to a grayscale to be displayed on the basis of driving current characteristics for P polarization when the polarization direction of the laser light is the P polarization. In addition, the laser control unit determines the driving current corresponding to the grayscale to be displayed on the basis of the driving current characteristics for P polarization when the polarization direction of the laser light is the S polarization.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: October 17, 2017
    Assignee: Funai Electric Co., Ltd.
    Inventors: Ken Nishioka, Kenji Nagashima, Atsuya Hirano, Atsuhiko Chikaoka
  • Patent number: 9781352
    Abstract: An imaging apparatus includes a plurality of imaging sections that images an imaging region, a parallax information generator that generates parallax information based on images by the imaging sections, and an exposure amount controller that determines an exposure amount for use in the imaging sections in a subsequent imaging operation to increase a number of parallax values contained in a parallax value group of an image portion showing a target in the imaging region, wherein the exposure amount controller executes parallax information obtaining control that obtains the parallax information corresponding to a plurality of exposure amounts generated based on the images with the exposure amounts, and executes exposure amount identifying control that identifies the exposure amount corresponding to the parallax information having a maximum number of parallax values in the obtained parallax information to determine the exposure amount for use in the imaging sections based on the identified exposure amount.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: October 3, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Kenji Nagashima
  • Publication number: 20170269269
    Abstract: A laser optical device is provided with a plurality of laser light sources, a collimating lens that has an optical axis that intersects a line connecting the plurality of laser light sources in a plan view viewed from a direction perpendicular to both this line and the optical axis and collimates lights respectively emitted from the plurality of laser light sources, and a deflecting element that deflects a plurality of lights emitted from the collimating lens so output lights where the lights respectively emitted from the plurality of laser light sources are optically processed make contact.
    Type: Application
    Filed: September 7, 2015
    Publication date: September 21, 2017
    Applicant: Funai Electric Co., Ltd.
    Inventors: Kenji Nagashima, Toyoshi Nogami, Tatsuya Ito
  • Patent number: 9686518
    Abstract: This projector is configured to allocate a first projection laser beam corresponding to a first image signal and a second projection laser beam corresponding to a second image signal different from the first image signal to a first area and a second area not overlapping with the first area, respectively, to project the first projection laser beam and the second projection laser beam.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: June 20, 2017
    Assignee: Funai Electric Co., Ltd.
    Inventors: Hirono Tsubota, Atsuya Hirano, Kenji Nagashima
  • Publication number: 20170150109
    Abstract: This display includes a control portion controlling a laser beam generation portion to output a first laser beam including a region of relaxation oscillation to a partial first image forming element included in a plurality of image forming elements and to output a second laser beam including no region of relaxation oscillation to a second image forming element, other than the first image forming element, included in the plurality of image forming elements.
    Type: Application
    Filed: February 8, 2017
    Publication date: May 25, 2017
    Applicant: Funai Electric Co., Ltd.
    Inventors: Ken Nishioka, Atsuhiko Chikaoka, Kenji Nagashima, Takatoshi Nishimura, Yasunori Higashiyama