Patents by Inventor Shigeki Ohshima

Shigeki Ohshima 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).

  • A METHOD FOR PROCESSING ZIRCONIA
    Publication number: 20170341990
    Abstract: A problem to be solved is to provide a method for processing zirconia without producing a monoclinic crystal. The solution is a method for processing zirconia, including the step of irradiating the zirconia with a laser with a pulse duration of 10?12 seconds to 10?15 seconds at an intensity of 1013 to 1015 W/cm2.
    Type: Application
    Filed: August 10, 2015
    Publication date: November 30, 2017
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Osamu KOMEDA, Takuya KONDO, Toshiyuki KAWASHIMA, Hirofumi KAN, Nakahiro SATOH, Takashi SEKINE, Takashi KURITA, Atsushi SUNAHARA, Tomoyoshi MOTOHIRO, Tatsumi HIOKI, Hirozumi AZUMA, Shigeki OHSHIMA, Tsutomu KAJINO, Yoneyoshi KITAGAWA, Yoshitaka MORI, Katsuhiro ISHII, Ryohei HANAYAMA, Yasuhiko NISHIMURA, Eisuke MIURA
  • Music spectrum calculating method, device and medium
    Publication number: 20030140771
    Abstract: When the inner product of signal eigenvalue vectors and azimuth vectors is transformed using an FFT and a MUSIC spectrum is calculated (Step 15), the inner product of noise eigenvalue vectors and azimuth vectors is transformed using the FFT and a MUSIC specturm is calculated (Step 17). A DOA is then estimated based on the MUSIC spectrum obtained (Step 16), thereby decreasing the quantity of calculations required for detecting a DOA of an incident wave using MUSIC algorithm.
    Type: Application
    Filed: October 24, 2002
    Publication date: July 31, 2003
    Inventor: Shigeki Ohshima
  • Radar
    Patent number: 6246359
    Abstract: A signal processing unit detects the azimuthal direction of a target in accordance with the phase difference between signals received by two receiving antennas. Then, by sequentially switching plural transmitting antennas having mutually different beam directions with a switching device, received signals are obtained using each of the transmitting antennas.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: June 12, 2001
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Yoshikazu Asano, Shigeki Ohshima
  • Tracking antenna system
    Patent number: 5245348
    Abstract: An antenna is divided into a plurality of sub-arrays which are arranged parallel to each other on a turntable. At least one of the sub-arrays is laterally divided into sub-array sections. Reception signals from these sub-array sections are compared with each other to detect a phase difference therebetween. This phase difference is utilized to control the beam direction of the antenna such that the antenna can be properly oriented to the satellite at all times.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: September 14, 1993
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Kunitoshi Nishikawa, Shigeki Ohshima, Toshiaki Watanabe