Patents by Inventor Atsushi Nakamura

Atsushi Nakamura 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: 11763417
    Abstract: The semiconductor device includes an image signal processor, a scaler, and an ROI (Region of Interest) controller. The image signal processor executes image processing including demosaic processing and stores the image after the image processing in memory. The scaler reduces the capture image from the image sensor to generate a reduced entire image and causes the image signal processor to execute image processing on the reduced entire image. The ROI controller cuts out a partial region of the captured image from the image sensor to generate an ROI image and causes the image signal processor to execute image processing on the ROI image.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: September 19, 2023
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kazuaki Terashima, Isao Nagayoshi, Atsushi Nakamura
  • Publication number: 20230288289
    Abstract: An object of the present disclosure is to provide a few-mode fiber testing method and a few-mode fiber testing device capable of acquiring a loss and inter-mode crosstalk for each mode at a connection point of a few-mode fiber by measurement only from one end of FUT.
    Type: Application
    Filed: August 21, 2020
    Publication date: September 14, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi NAKAMURA, Tomokazu ODA, Daisuke IIDA, Hiroyuki OSHIDA
  • Publication number: 20230288287
    Abstract: An object of the present disclosure is to provide a power coupling coefficient measurement method and a power coupling coefficient measurement device capable of inexpensively and easily measuring a power coupling coefficient. The power coupling coefficient measurement method according to the present disclosure is a power coupling coefficient measurement method for measuring a power coupling coefficient of a multi-core fiber in order to achieve the aforementioned object, and includes: inputting a test light pulse from one end of the multi-core fiber to any one of cores; receiving backscattered light of the core to which the test light pulse is input or any one of the other cores; measuring an intensity distribution of the backscattered light with respect to a distance from the one end of the multi-core fiber; and calculating the power coupling coefficient from the intensity distribution of the backscattered light.
    Type: Application
    Filed: August 21, 2020
    Publication date: September 14, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi NAKAMURA, Daisuke IIDA, Tomokazu ODA, Hiroyuki OSHIDA
  • Publication number: 20230288466
    Abstract: distribution of the any higher-order mode.
    Type: Application
    Filed: August 7, 2020
    Publication date: September 14, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tomokazu ODA, Atsushi NAKAMURA, Daisuke IIDA, Hiroyuki OSHIDA
  • Publication number: 20230290555
    Abstract: A soft magnetic powder contains a particle having a composition represented by FexCuaNbb(S1-yBy)100-x-a-b, a, b, and x being numbers whose units are atomic %, in which 0.3?a?2.0, 2.0?b?4.0, and 73.0?x?79.5, and y being a number satisfying f(x)?y?0.99, and f(x)=(4×10?34)x17.56. When an XPS spectrum of the particle is obtained, and fitting processing is performed on an O1s peak, the O1s peak is separated into a first element peak of 532 eV or less and a second element peak of more than 532 eV, and S2/S1 is 1.5 or more where S1 is an area of the first element peak and S2 is an area of the second element peak.
    Type: Application
    Filed: March 13, 2023
    Publication date: September 14, 2023
    Inventors: Yasuko KUDO, Atsushi NAKAMURA
  • Patent number: 11754465
    Abstract: An object of the present invention is to provide an optical pulse test apparatus and an optical pulse test method that are capable of determining a change in state of an optical fiber connection portion without the need for reference and without being affected by changes in gap interval before and after the change in state. The optical pulse test apparatus according to the present invention is configured to perform an OTDR measurement by using test optical pulses having spectral widths of from several nm to several hundred nm arranged at intervals of several ten nm to several hundred nm, calculate a reflection peak value caused by the Fresnel reflection at the connection portion from the obtained OTDR waveform, and determine a state such as water immersion of the optical fiber connection portion based on the value.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: September 12, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi Nakamura, Nazuki Honda, Daisuke Iida, Hiroyuki Oshida, Keiji Okamoto
  • Publication number: 20230258830
    Abstract: A method of manufacturing a scintillator material includes providing a substrate made of a quartz glass and having a recess formed therein; filling the recess with a raw material powder obtained by mixing an iodide raw material and SiO2 fine particles; after filling the recess, disposing a lid on the substrate to cover the recess; and after disposing the lid, heating the substrate, thereby forming a nanocomposite layer in which an iodide phosphor is introduced into a cristobalite structure.
    Type: Application
    Filed: February 7, 2023
    Publication date: August 17, 2023
    Inventors: Hisayoshi DAICHO, Takeshi IWASAKI, Atsushi NAKAMURA
  • Patent number: 11728119
    Abstract: A photocathode 4 includes an optically transparent conductive layer provided between a translucent substrate and a photoelectric conversion layer. The optically transparent conductive layer is formed of a constituent material including carbon. A Raman spectrum of the constituent material has a peak of a band, a peak of a band, a peak of a band, and a peak of a band.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: August 15, 2023
    Assignees: NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY, HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi Nakamura, Yusuke Noda
  • Patent number: 11719599
    Abstract: This disclosure describes inputting pulsated pump light in a fundamental mode or a first higher-order mode into one end of an optical fiber under test constructed by connecting two optical fibers in series; inputting probe light having an optical frequency difference within a Brillouin frequency shift range with respect to the pump light into the other end of the optical fiber under test in the fundamental mode or the first higher-order mode; measuring a Brillouin gain distribution related to a distance of transmitted light intensity of probe light output from the one end into which the pump light was input; and calculating each inter-modal coupling efficiency at the connection point of the optical fiber under test.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: August 8, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi Nakamura, Tomokazu Oda, Daisuke Iida, Hiroyuki Oshida, Yoshifumi Wakisaka
  • Publication number: 20230244429
    Abstract: An object is to provide an image output apparatus, image output method, and storage medium capable of suppressing a decrease in print efficiency. To this end, print jobs are printed in such an order that the closer the temperature condition is to the temperature of a fixing unit, the earlier the print job is printed.
    Type: Application
    Filed: January 25, 2023
    Publication date: August 3, 2023
    Inventors: Nobukazu Suzuki, Atsushi Nakamura
  • Publication number: 20230235436
    Abstract: An amorphous alloy soft magnetic powder has a composition represented by (FexCo1-x)100-(a+b)(SiyB1-y)aMb, where M is at least one selected from the group consisting of C, S, P, Sn, Mo, Cu, and Nb, and x, y, a, and b satisfy 0.73?x?0.85, 0.02?y?0.10, 13.0?a?19.0, and 0?b?2.0. A Si—K absorption edge XANES spectrum obtained when performing an XAFS measurement on particles has a peak A present in a range of 1842±1 eV, a peak B present in a range of 1845±1 eV, and a peak C present in a range of 1848±1 eV. An intensity ratio A/C is 0.40 or less, and an intensity ratio B/C is 0.60 or less.
    Type: Application
    Filed: January 26, 2023
    Publication date: July 27, 2023
    Inventors: Mayu WATANABE, Takuma ENOMOTO, Kai KITAMURA, Junya ABE, Atsushi NAKAMURA, Masayuki OMOTO, Ichiro ASAOKA
  • Publication number: 20230236044
    Abstract: An object of the present invention is to provide a Brillouin optical sensing device and an optical sensing method capable of reducing introduction costs. The Brillouin optical sensing device according to the present invention includes: a sensing fiber 90 in which a plurality of optical fibers having Brillouin frequency shift characteristics different from each other are arranged in parallel; an optical measuring instrument 11 that launches an optical pulse into at least two of the optical fibers of the sensing fiber 90 to generate Brillouin scattering lights and measures a beat frequency of a beat signal between the Brillouin scattering lights at any position of the sensing fiber 90; and an arithmetic processing unit 12 that acquires a physical quantity of the sensing fiber 90 at said any position based on the beat frequency acquired by the optical measuring instrument 11.
    Type: Application
    Filed: May 21, 2020
    Publication date: July 27, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi NAKAMURA, Chihiro KITO, Daisuke IIDA, Junichi KAWATAKA, Hiroyuki OSHIDA
  • Publication number: 20230187161
    Abstract: A photocathode 4 includes an optically transparent conductive layer provided between a translucent substrate and a photoelectric conversion layer. The optically transparent conductive layer is formed of a constituent material including carbon. A Raman spectrum of the constituent material has a peak of a band, a peak of a band, a peak of a band, and a peak of a band.
    Type: Application
    Filed: April 15, 2021
    Publication date: June 15, 2023
    Applicants: NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY, HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi NAKAMURA, Yusuke NODA
  • Publication number: 20230155348
    Abstract: A semiconductor optical amplifier integrated laser includes a semiconductor laser oscillator portion that oscillates laser light having a wavelength included in a gain band and a semiconductor optical amplifier portion that amplifies laser light output from the semiconductor laser oscillator portion. The semiconductor laser oscillator portion and the semiconductor optical amplifier portion have one common p-i-n structure, the common p-i-n structure includes an active layer, a cladding layer provided apart from the active layer, and a common functional layer formed in the cladding layer, and the common functional layer includes a first portion that reflects light having a wavelength within the gain band in the semiconductor laser oscillator portion and a second portion that transmits light having a wavelength within the gain band in the semiconductor optical amplifier portion.
    Type: Application
    Filed: January 9, 2023
    Publication date: May 18, 2023
    Inventors: Atsushi NAKAMURA, Kaoru Okamoto, Masatoshi Arasawa, Tetsuya Nishida, Yasushi Sakuma, Shigetaka Hamada, Ryosuke Nakajima
  • Publication number: 20230155347
    Abstract: An optical semiconductor device includes a substrate, a semiconductor multilayer which is formed on the substrate, and includes an optical functional layer, an insulating film formed on the semiconductor multilayer, and an electrode formed on a part of the insulating film. The insulating film covers the semiconductor multilayer except for a region in which the semiconductor multilayer and the electrode are electrically connected to each other. At least a part of a region of the insulating film that is overlapped with the electrode is thinner than a region of the insulating film that is not overlapped with the electrode.
    Type: Application
    Filed: April 29, 2022
    Publication date: May 18, 2023
    Inventors: Atsushi NAKAMURA, Shigetaka HAMADA, Ryosuke NAKAJIMA, Ryu WASHINO, Shoko YOKOKAWA, Kouji NAKAHARA
  • Publication number: 20230152170
    Abstract: An object of the present disclosure is to provide a method and an apparatus for acquiring curvature and torsion using an inexpensive sensor medium. Disclosed is a measurement apparatus including a fiber ribbon including a plurality of coated fibers arranged in parallel, a strain measurement unit that measures strain amounts of the plurality of coated fibers, and an arithmetic processing unit that calculates curvature and torsion of the fiber ribbon using a strain amount of a coated fiber arranged in a middle portion of the plurality of coated fibers and a strain amount of a coated fiber arranged in a marginal portion of the plurality of coated fibers.
    Type: Application
    Filed: March 5, 2020
    Publication date: May 18, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi NAKAMURA, Daisuke IIDA, Hiroyuki OSHIDA, Tatsuya OKAMOTO, Tomokazu ODA, Yoshifumi WAKISAKA
  • Patent number: 11648905
    Abstract: An occupant protection device for protecting an occupant sitting in a seat includes an inflator, a holding member that is adapted to be disposed in front of a pelvic region of the occupant as sitting in the seat, and an airbag that is formed of a sheet material having flexibility and stored in and held by the holding member in a folded form. The airbag is configured to be inflated with an inflation gas fed by the inflator. The airbag includes a shoulder restraining portion that is configured to be deployed in front of shoulders of the occupant, and a supporting inflatable portion that is disposed in a lower end portion of the airbag as deployed for supporting the shoulder restraining portion. The supporting inflatable portion as deployed includes, in the underside, a supported surface that is adapted to be supported by thighs of the occupant.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: May 16, 2023
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Shinji Yamada, Atsushi Nakamura, Yuji Matsuzaki, Kazumi Fukaura, Yasushi Masuda
  • Publication number: 20230144218
    Abstract: The present invention has an object to provide an optical fiber testing method and an optical fiber testing device capable of measuring the delay ratio between the modes at each position of a fiber over a long distance in which a plurality of modes propagate. An optical fiber testing method and its device according to the present invention, measure the change amount for the wave number k of a Brillouin Frequency Shift ? in stimulated Brillouin scattering generated in the same acoustic mode, with respect to each target propagation mode. Thereby, the ratio of the change amount measured at each propagation mode is acquired as the group delay ratio between the modes.
    Type: Application
    Filed: June 3, 2020
    Publication date: May 11, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tomokazu ODA, Hiroyuki OSHIDA, Daisuke IIDA, Atsushi NAKAMURA, Yuto SAGAE
  • Patent number: 11646405
    Abstract: A positive electrode active substance for a secondary cell, where the positive electrode active substance is capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The positive electrode active substance contains 0.3 to 5 mass % of graphite, 0.1 to 4 mass % of carbon obtained by carbonizing a water-soluble carbon material, or 0.1 to 5 mass % of a metal fluoride is supported on a composite containing a compound which contains at least iron or manganese, where the compound is represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4, and carbon obtained by carbonizing a cellulose nanofiber.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: May 9, 2023
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki Yamashita, Tomoki Hatsumori, Atsushi Nakamura, Takaaki Ogami
  • Publication number: 20230126470
    Abstract: An object of the present invention is to provide an immersion detection system and an immersion detection method capable of eliminating module replacement in the occurrence of immersion and simplifying system management. An immersion detection system according to the present invention includes: an immersion detection sensor having two optical fibers connected in series such that end faces of the two optical fibers abut on each other with a predetermined gap; an optical measurer that causes test light with a plurality of wavelengths to enter an optical transmission line having a plurality of the immersion detection sensors connected in series with optical fibers and measures a return loss of the test light at the immersion detection sensor for each of the wavelengths and for each of the immersion detection sensors; and a determiner that averages, for each of the immersion detection sensors, the return losses for the wavelengths and performs threshold determination on the presence or absence of immersion.
    Type: Application
    Filed: February 28, 2020
    Publication date: April 27, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi NAKAMURA, Nazuki HONDA, Hiroyuki OSHIDA