Patents by Inventor Ryuta Yamada

Ryuta Yamada 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: 10317598
    Abstract: An optical film in which heat resistance or moisture resistance is excellent, and visibility is able to be sufficiently ensured. In the optical film used in a display apparatus including a polarizer, Re is 1,000 nm to 30,000 nm, and Rth is ?30,000 nm to ?1,000 nm. Further, a polarization plate including the optical film, a transparent conductive film including the optical film, a surface protection film including the optical film including the optical film, and a liquid crystal display apparatus including the optical film.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 11, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Ryuta Takegami, Naoyoshi Yamada
  • Patent number: 10224437
    Abstract: A semiconductor substrate includes a first region in which a plurality of pixels are disposed and a second region located inside the first region to be surrounded by the first region when viewed from a direction in which a principal surface and a principal surface oppose each other. A through-hole penetrating through the semiconductor substrate is formed in the second region of the semiconductor substrate. An electrode disposed on a side of the principal surface of the semiconductor substrate and electrically connected to the plurality of pixels and an electrode disposed on a side of a principal surface of a mount substrate are connected to each other via a bonding wire inserted through the through-hole.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: March 5, 2019
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Shogo Kamakura, Ryuta Yamada, Kenichi Sato
  • Publication number: 20180026145
    Abstract: A semiconductor substrate includes a first region in which a plurality of pixels are disposed and a second region located inside the first region to be surrounded by the first region when viewed from a direction in which a principal surface and a principal surface oppose each other. A through-hole penetrating through the semiconductor substrate is formed in the second region of the semiconductor substrate. An electrode disposed on a side of the principal surface of the semiconductor substrate and electrically connected to the plurality of pixels and an electrode disposed on a side of a principal surface of a mount substrate are connected to each other via a bonding wire inserted through the through-hole.
    Type: Application
    Filed: December 14, 2015
    Publication date: January 25, 2018
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Shogo KAMAKURA, Ryuta YAMADA, Kenichi SATO
  • Patent number: 9620662
    Abstract: An ultraviolet sensor includes a silicon photodiode array having a plurality of first pixel regions and a plurality of second pixel regions. A filter film is disposed on each of the first pixel regions so as to cover each first pixel region, except on each second pixel region. The filter film lowers transmittance in a detection target wavelength range in the ultraviolet region. Each of each first pixel region and each second pixel region includes at least one pixel having an avalanche photodiode to operate in Geiger mode, and a quenching resistor connected in series to the avalanche photodiode. Each of the quenching resistors in the plurality of first pixel regions is connected through a first signal line to a first output terminal. Each of the quenching resistors in the plurality of second pixel regions is connected through a second signal line to a second output terminal.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 11, 2017
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Koei Yamamoto, Kenzo Hayatsu, Terumasa Nagano, Yuki Okuwa, Ryuta Yamada
  • Publication number: 20160086989
    Abstract: An ultraviolet sensor includes a silicon photodiode array having a plurality of first pixel regions and a plurality of second pixel regions. A filter film is disposed on each of the first pixel regions so as to cover each first pixel region, except on each second pixel region. The filter film lowers transmittance in a detection target wavelength range in the ultraviolet region. Each of each first pixel region and each second pixel region includes at least one pixel having an avalanche photodiode to operate in Geiger mode, and a quenching resistor connected in series to the avalanche photodiode. Each of the quenching resistors in the plurality of first pixel regions is connected through a first signal line to a first output terminal. Each of the quenching resistors in the plurality of second pixel regions is connected through a second signal line to a second output terminal.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 24, 2016
    Inventors: Koei YAMAMOTO, Kenzo HAYATSU, Terumasa NAGANO, Yuki OKUWA, Ryuta YAMADA
  • Publication number: 20100316151
    Abstract: To obtain excellent reception performance whilst cutting down the amount of computing operation in a MIMO communication system using soft-decision error correction coding. Received waves picked up by receiving antennas 401-1 to 401-R are converted from the radio frequency to the baseband signal by respective receivers 402-1 to 402-R to be output as a received signal. A signal detector 403 calculates bit LLRs of the transmitted signal based on the received signal and the channel-estimated values obtained from a channel estimator 404. The bit LLRs output from signal detector 403 are rearranged by deinterleaver units 405-1 to 405-T in the patterns opposite to the patterns in which interleaving was performed on the transmission side. The bit LLRs after de-interleaving are subjected to an error correction decoding process through decoders 406-1 to 406-T. The bit sequences after decoding are parallel-to-serial converted by a parallel-to-serial converter 407 so that the detected transmission bit sequence is output.
    Type: Application
    Filed: February 4, 2009
    Publication date: December 16, 2010
    Inventors: Kazuhiko Fukawa, Hiroshi Suzuki, Satoshi Suyama, Ryuta Yamada, Naoki Okamoto