Patents by Inventor Tetsuya Yuasa

Tetsuya Yuasa 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: 12000699
    Abstract: Provided is an optical interference measuring apparatus including a measuring unit for acquiring an interferogram of an interference wave obtained by irradiating a measuring target and a reference surface with electromagnetic waves and causing reflected waves from a reflecting surface of the measurement target and reflected waves from the reference surface to interfere and a signal processing unit for configuring an intensity profile in the depth direction by performing Fourier transform of the interferogram. The signal processing unit is configured to estimate a parameter for a model formula for an assumed surface count, based on the model formula of an interferogram when it is assumed that the measurement target has a predetermined structure, to select an optimal model by a statistical technique from the model formula to which a parameter estimated for the assumed surface count is applied, and to reconfigure an intensity profile based on the optimal model.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: June 4, 2024
    Assignees: TOPCON CORPORATION, RIKEN
    Inventors: Homare Momiyama, Yoshiaki Sasaki, Isao Yoshimine, Chiko Otani, Tetsuya Yuasa
  • Patent number: 11915536
    Abstract: An anomaly determination apparatus for a vehicle that includes a transmission includes an execution device and a memory device. The memory device is configured to store map data that defines pre-trained map, which has been trained through machine learning. When a variable representing time-series data of a rotation speed of a gear is fed to the map as an input variable, the map outputs a state variable representing a state of the gear as an output variable. The execution device is configured to execute: an obtaining process that obtains the variable representing the time-series data as a value of the input variable; and a determination process that determines whether there is an anomaly in the transmission based on a value of the output variable that is output by the map when the value of the input variable is fed to the map.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: February 27, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Bunazawa, Tetsuya Yoshikawa, Kei Yuasa, Kenichi Yamaguchi
  • Publication number: 20220228850
    Abstract: Provided is an optical interference measuring apparatus including a measuring unit for acquiring an interferogram of an interference wave obtained by irradiating a measuring target and a reference surface with electromagnetic waves and causing reflected waves from a reflecting surface of the measurement target and reflected waves from the reference surface to interfere and a signal processing unit for configuring an intensity profile in the depth direction by performing Fourier transform of the interferogram. The signal processing unit is configured to estimate a parameter for a model formula for an assumed surface count, based on the model formula of an interferogram when it is assumed that the measurement target has a predetermined structure, to select an optimal model by a statistical technique from the model formula to which a parameter estimated for the assumed surface count is applied, and to reconfigure an intensity profile based on the optimal model.
    Type: Application
    Filed: May 25, 2020
    Publication date: July 21, 2022
    Inventors: Homare MOMIYAMA, Yoshiaki SASAKI, Isao YOSHIMINE, Chiko OTANI, Tetsuya YUASA
  • Publication number: 20220221266
    Abstract: Provided is an optical interference measuring apparatus including a measuring unit configured to acquire an interferogram of an interference wave by irradiating a measurement target and a reference surface with electromagnetic waves and causing a reflected wave from a reflecting surface of the measurement target to interfere with a reflected wave from the reference surface and a signal processing unit configured to configure an intensity profile in a depth direction by performing Fourier transform of the interferogram. The signal processing unit includes at least one of a first noise removal unit to remove noise with filtering by deleting data in regions other than a pass region which is a region set with reference to a measurement target installation position from the intensity profile and a second noise removal unit to remove noise by performing singular value decomposition of the interferogram to delete noise component.
    Type: Application
    Filed: May 25, 2020
    Publication date: July 14, 2022
    Inventors: Homare MOMIYAMA, Yoshiaki SASAKI, Isao YOSHIMINE, Chiko OTANI, Tetsuya YUASA
  • Publication number: 20120313001
    Abstract: Provided are an image synthesizing device and an image synthesizing method wherein a subject is less affected by beam absorption. A diffraction beam intensity and a front diffraction beam intensity actually detected are included in the influence of absorption on a subject (Sa). Yet, assuming that said beams have the attenuation rate which is caused by said beams being absorbed when passing through a subject, the angle of refraction ?0 of the beam when passing through the subject (Sa) is obtained using the diffraction beam intensity and the front diffraction beam intensity which are not affected by attenuation, and which are represented by the aforementioned attenuation rate, front diffraction beam intensity, and diffraction beam intensity; a synthesized image of the subject (Sa) is obtained by means of said angle of refraction ?0.
    Type: Application
    Filed: October 29, 2010
    Publication date: December 13, 2012
    Applicant: TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION
    Inventors: Masami Ando, Naoki Sunaguchi, Daisuke Shimao, Tetsuya Yuasa
  • Patent number: 7505560
    Abstract: A method and apparatus for constructing a 3-dimensional image of the internal organs invisible by the conventional method is provided.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: March 17, 2009
    Assignee: High Energy Accelerator Research Organization
    Inventors: Masami Ando, Anton Maksimenko, Hiroshi Sugiyama, Tetsuya Yuasa
  • Publication number: 20080170653
    Abstract: A method and apparatus for constructing a 3-dimensional image of the internal organs invisible by the conventional method is provided.
    Type: Application
    Filed: February 28, 2006
    Publication date: July 17, 2008
    Applicant: HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION
    Inventors: Masami Ando, Anton Maksimenko, Hiroshi Sugiyama, Tetsuya Yuasa
  • Patent number: 4889746
    Abstract: An optical recording medium using a recording layer of an alloy taking two different crystalline states exhibiting different reflectivities is preferably manufactured by depositing a plurality of layers, each of which consists essentially of an element or an intermetallic compound, i.e. a material having a lower crystallizable temperature, to form a recording layer having a desired average chemical composition, while heating a substrate on which the recording layer is being deposited.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: December 26, 1989
    Assignee: Fujitsu Limited
    Inventors: Kenichi Utsumi, Tetsuya Yuasa, Yasuyuki Goto, Iwao Tsugawa, Nagaaki Koshino