Patents by Inventor Akira Yamamoto

Akira Yamamoto 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: 20210367670
    Abstract: An optical transmission system including an optical transmitter and an optical receiver, wherein the optical transmitter includes a signal coding unit that performs non-linear block coding on an M (M is an integer greater than or equal to 1)-value symbol sequence or a bit sequence input as data information to generate an L (L is an integer greater than or equal to 2, L>M)-value symbol sequence that corresponds to the M-value symbol sequence or the bit sequence in one-to-one correspondence, a digital-to-analog conversion unit that converts the generated L-value symbol sequence to an analog signal, and a modulator that generates an optical modulation signal by performing modulation based on the analog signal, and the optical receiver includes a light receiving unit that receives the optical modulation signal transmitted from the optical transmitter and converts the optical modulation signal to an electrical signal, and a signal decoding unit that restores the M-value symbol sequence or the bit sequence by pe
    Type: Application
    Filed: November 7, 2019
    Publication date: November 25, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shuto YAMAMOTO, Seiji OKAMOTO, Akira MASUDA, Hiroki TANIGUCHI, Yoshiaki KISAKA
  • Publication number: 20210367671
    Abstract: Provided is an optical transmission system that includes an optical transmitter, and an optical receiver. The optical transmitter includes: a signal coding unit configured to perform nonlinear trellis coding, which corresponds to nonlinear calculation, on a symbol sequence; and a modulator configured to modulate the symbol sequence subjected to the nonlinear trellis coding by the signal coding unit, and transmit the modulated symbol sequence to the optical receiver. The optical receiver includes: a light receiving unit configured to receive an optical signal transmitted from the optical transmitter, and convert the received optical signal into an electrical signal; and a digital signal processing unit configured to perform digital signal processing on the electrical signal to reconstruct the symbol sequence.
    Type: Application
    Filed: November 6, 2019
    Publication date: November 25, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shuto YAMAMOTO, Akira MASUDA, Hiroki TANIGUCHI, Yoshiaki KISAKA
  • Publication number: 20210354348
    Abstract: Provided is a method for producing a gear including an intermediate product forming process of solidifying a fluid material to form a gear intermediate product, and a tooth forming process of cutting the gear intermediate product to form teeth.
    Type: Application
    Filed: May 17, 2021
    Publication date: November 18, 2021
    Inventors: Mitsuhiro Tamura, Akira Yamamoto
  • Patent number: 11174943
    Abstract: A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 16, 2021
    Assignee: VALQUA, LTD.
    Inventors: Takahiro Yamamoto, Chao Jing, Mitsuru Minami, Akira Ueda, Yuki Noriduki
  • Patent number: 11174918
    Abstract: A reduction gear includes an external gear, an internal gear which meshes with the external gear, a first member which synchronizes with a rotation of the external gear, a second member which synchronizes with a rotation of the internal gear, and a main bearing which is disposed between the first member and the second member, in which one of the first member and the second member is connected to a driven member and the other is fixed to an external member, and the first member, the second member, and the main bearing are formed of a material having a larger Young's modulus and larger specific gravity than those of a material constituting the external gear and the internal gear.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: November 16, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mitsuhiro Tamura, Akira Yamamoto
  • Publication number: 20210343207
    Abstract: An abnormality detection circuit includes: a plurality of voltage dividing circuits; a first selector configured to select and output one of a plurality of outputs of the plurality of voltage dividing circuits; a first comparator configured to compare an output of the first selector with a reference voltage; and a first detector configured to detect an abnormality based on an output of the first comparator, wherein the selection of the first selector is switched in synchronization with a vertical synchronization signal or a horizontal synchronization signal of a liquid crystal display device.
    Type: Application
    Filed: July 8, 2021
    Publication date: November 4, 2021
    Inventors: Akira Hashimoto, Takateru Yamamoto, Sukenori Ito, Yasunobu Inoue
  • Patent number: 11156266
    Abstract: There is provided a gear device including an input shaft to which power is input, an internal gear, and an external gear. The input shaft has an input shaft hollow portion that extends in an axial direction, and an internal gear portion that meshes with an input pinion to be rotationally driven. The internal gear portion is configured so that the input pinion internally meshing with the internal gear portion and the input shaft hollow portion do not overlap each other when viewed in the axial direction.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 26, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Akira Yamamoto, Mitsuhiro Tamura
  • Patent number: 11150075
    Abstract: An angle detection device including: an angle sensor AGSE outputting first and second sine wave signals SINWS1, SINWS2 having phases that are different from each other by 90 degrees in accordance with rotation of a detection target; an angle calculator calculating an angle signal corresponding to a rotation angle of the detection target based on SINWS1 and SINWS2; and an angle sensor AGSE abnormality determiner ASAD determining an abnormality of AGSE based on SINWS1 and SINWS2. The ASAD includes: an amplitude signal calculator calculating an amplitude signal MALS based on a square root of a sum of squares of SINWS1 and SINWS2; a first angle signal ANGS1 calculation processor calculating ANGS1 based on SINWS1 and MALS; a second angle signal ANGS2 calculation processor calculating ANGS2 based on SINWS2 and MALS; and an abnormality determination processor determining the abnormality of AGSE based on an error between ANGS1 and ANGS2.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: October 19, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Isao Kezobo, Munenori Yamamoto, Akira Furukawa
  • Publication number: 20210303178
    Abstract: Provided are: one or plural storage units including a plurality of physical storage devices (PDEVs); and a plurality of computers connected to the one or plural storage units via a communication network. Two or more computers execute storage control programs (hereinafter, control programs), respectively. Two or more control programs share a plurality of storage areas provided by the plurality of PDEVs and metadata regarding the plurality of storage areas. When the control program fails, another control program sharing the metadata accesses data stored in a storage area. When a PDEV fails, the control program restores data of the failed PDEV using redundant data stored in another PDEV that has not failed.
    Type: Application
    Filed: September 14, 2020
    Publication date: September 30, 2021
    Applicant: Hitachi, Ltd.
    Inventors: Yoshinori Ohira, Akira Yamamoto, Ryosuke Tatsumi, Takahiro Yamamoto, Masakuni Agetsuma
  • Publication number: 20210300621
    Abstract: A can lid is provided to be made of a steel plate and easy to be opened. An opening piece is enclosed by a score line formed on a periphery of a panel portion. An installation portion of a tab is attached to the opening piece at a site close to a circumference of the opening piece. The tab includes a finger grip portion that is situated closer to a center of the opening piece than the installation portion, and a nose portion that is situated on an opposite side to the finger grip portion at a radially outer side of the score line. A portion of the panel portion underneath the nose portion serves as a support section that supports the nose portion from below. An outer circumferential bead is formed on a radially outer side of the score line to enhance a bending stiffness of the support section.
    Type: Application
    Filed: July 2, 2019
    Publication date: September 30, 2021
    Applicant: DAIWA CAN COMPANY
    Inventors: Toshiyuki OHKOSHI, Hirokazu KONAGAYA, Tadayoshi IWAMARU, Akira YAMAMOTO, Katsumi OHSHIMA
  • Publication number: 20210294742
    Abstract: In a complex system including; one or more storage systems including a cache and a storage controller; and one or more storage boxes including a storage medium, the storage box generates redundant data from write data received from a server, and writes the write data and the redundant data to the storage medium. The storage box transmits the write data to the storage system when it is difficult to generate the redundant data or it is difficult to write the write data and the redundant data to the storage medium. The storage system stores the received write data in the cache.
    Type: Application
    Filed: September 11, 2020
    Publication date: September 23, 2021
    Inventors: Akira YAMAMOTO, Ryosuke TATSUMI, Yoshinori OHIRA, Junji OGAWA
  • Publication number: 20210278989
    Abstract: In a case of exchanging a migration source storage controller and a migration destination storage controller sharing one storage medium during replacement of storage devices, when hardware configurations or data management forms of the storage controllers are different, data in the storage medium cannot be shared even when data management information can be copied. Accordingly, a storage system, having a storage control unit and a storage drive provided with a storage medium, includes data management information for accessing data in the storage drive. A first storage control unit copies data management information about the data in the storage drive to a second storage control unit. When a write request is received from a host after copying of the data management information begins, each of the first storage and second storage control units stores write data related to the write request in a separate storage area of the storage drive.
    Type: Application
    Filed: March 22, 2021
    Publication date: September 9, 2021
    Inventors: Kazuki MATSUGAMI, Tomohiro KAWAGUCHI, Akira YAMAMOTO
  • Publication number: 20210281137
    Abstract: A rotating electrical machine includes an annular coil connection body provided coaxially with a stator. The coil connection body has, in a groove provided on a holder, an overhang portion for restricting an axial-direction movement of a terminal, and a positioning projection for restricting a radial-direction movement of the terminal. The positioning projection positions the terminal such that a part of the terminal overlaps the overhang portion in the axial direction. In this structure, when the terminal moves in a direction from a terminal holding portion toward a groove opening, the terminal comes into contact with a side surface of the overhang portion, whereby lifting and coming-off of the terminal can be prevented.
    Type: Application
    Filed: August 17, 2018
    Publication date: September 9, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takashi YAMAMOTO, Akira KIMISHIMA, Toshihiro MATSUNAGA, Kengo FUJIMOTO
  • Publication number: 20210268397
    Abstract: Provided is a method of producing an ultrafine bubble-containing liquid containing ultrafine bubbles generated by causing film boiling in a liquid with a heat generation member, including: detaching a solid present at a liquid contact surface of the heat generation member in a form of a microscopic substance by using the film boiling; and generating ultrafine bubbles with the detached microscopic substance as a core.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 2, 2021
    Inventors: Yoshiyuki Imanaka, Masahiko Kubota, Akitoshi Yamada, Akira Yamamoto, Yumi Yanai, Teruo Ozaki, Toshio Kashino, Hiroyuki Ishinaga
  • Patent number: 11108461
    Abstract: A method of testing a ribbon fiber cable is provided. The ribbon fiber cable includes optical fibers between a first end face and a second end face. End faces of the optical fibers are lined up in a single line in a line direction. The method includes: injecting light into each optical fiber at the second end face; measuring first power of the light exiting from each optical fiber at the first end face; disposing a member between the first end face and an optical sensor; injecting light into each optical fiber at the second end face; measuring second power of the light exiting from each optical fiber at the first end face; calculating a ratio of the second power to the first power; and testing an array of the optical fibers based on the ratio. Light transmittance of the member monotonically varies in the line direction.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: August 31, 2021
    Assignees: YOKOGAWA ELECTRIC CORPORATION, Yokogawa Test & Measurement Corporation
    Inventors: Akira Tanigawa, Toshikazu Yamamoto
  • Publication number: 20210260166
    Abstract: [Problems] To provide a method for treating and/or preventing osteoporosis with teriparatide or a salt thereof, the method having excellent safety and/or efficacies. [Solving Means] A method for treating and/or preventing osteoporosis in which teriparatide or a salt thereof is an active ingredient, including administering teriparatide or a salt thereof in a unit dose of 28.2 ?g at a frequency of twice a week.
    Type: Application
    Filed: May 7, 2021
    Publication date: August 26, 2021
    Applicant: ASAHI KASEI PHARMA CORPORATION
    Inventors: Takeshi MINAMIDA, Ryo KATO, Akira KOIKE, Atsushi OSE, Akihiro KITAMI, Takashi MAKIYAMA, Hikaru YAMAMOTO, Kazuhiko KITAGAWA, Ryoko TAKAO
  • Publication number: 20210263659
    Abstract: One or more storage systems are connected to one or more storage boxes comprising multiple storage devices. Multiple storage areas provided by one or more storage boxes include an allocated area, which is a storage area that is allocated to a virtual volume, and an empty area, which is a storage area that is not allocated to any logical volume. Multiple owner rights corresponding to multiple storage areas are set in one or more storage systems. A storage system having an empty area owner right changes an empty area to the allocated area by allocating the empty area. In a case where a configuration change (a relative change in the number of storage boxes with respect to the number of storage systems) is performed, a first storage system that exists after the configuration change sets, in the first storage system, either more or fewer owner rights than the owner rights, which have been allocated to the first storage system before the configuration change.
    Type: Application
    Filed: May 7, 2021
    Publication date: August 26, 2021
    Applicant: Hitachi, Ltd.
    Inventors: Akira YAMAMOTO, Miho IMAZAKI
  • Patent number: 11099073
    Abstract: An identification apparatus identifies the kind of an object to be conveyed by a conveyor and includes an illumination optical system illuminating the object with light from a light source, a light capturing optical system capturing Raman-scattered light from the object, a spectral element dispersing the Raman-scattered light, a light-receiving element receiving the Raman-scattered light dispersed by the spectral element, and a data-processing unit acquiring spectral data of the Raman-scattered light from the light-receiving element and performs an identification process. An optical axis of the illumination optical system and an optical axis of the light capturing optical system intersect each other. The illumination optical system is an imaging optical system that has a numerical aperture for the conveyance surface smaller than that of the light capturing optical system for the conveyance surface, or a collimator optical system that converts the light from the light source into parallel light.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: August 24, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuki Yonetani, Shigeru Ichihara, Yasuhiro Sekine, Akira Yamamoto
  • Publication number: 20210245118
    Abstract: Provided is a UFB-containing liquid production apparatus that can efficiently produce a UFB-containing liquid with a UFB generation unit. The UFB-containing liquid production apparatus includes: a gas dissolution unit that produces a gas-dissolved liquid by dissolving a gas into a liquid supplied from a liquid supply unit; a UFB generation unit that generates UFBs in the flowing-in gas-dissolved liquid; and a circulation path that supplies the gas-dissolved liquid to the UFB generation unit and supplies a UFB-containing liquid produced by the UFB generation unit to the liquid supply unit. In the circulation path, there is provided a micro-bubble reduction unit that reduces an amount of micro-bubbles contained in the gas-dissolved liquid to flow into the UFB generation unit.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 12, 2021
    Inventors: Akitoshi Yamada, Masahiko Kubota, Akira Yamamoto, Yoshiyuki Imanaka, Yumi Yanai, Hiroyuki Ishinaga, Teruo Ozaki, Toshio Kashino, Ikuo Nakazawa
  • Publication number: 20210245072
    Abstract: Provided is a UFB generating apparatus that can achieve compactness, power saving, and low cost. To this end, a liquid containing unit for supplying a liquid to a UFB generating head is fluidly linked to the UFB generating head at a position higher than the UFB generating head in a direction of gravitational force.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 12, 2021
    Inventors: Toshio Kashino, Yoshiyuki Imanaka, Masahiko Kubota, Akitoshi Yamada, Akira Yamamoto, Yumi Yanai, Teruo Ozaki, Hiroyuki Ishinaga