Patents by Inventor Shigenori Torihata

Shigenori Torihata 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).

  • Signal transmission performance evaluation device in an optical communication apparatus
    Patent number: 5267068
    Abstract: The evaluation of the signal transmission performance of an optical communication apparatus used when communication for control purposes is made using optical communication in general industrial machines such as presses. An electric current having a magnitude in a predetermined range is fed stepwise to a light emitting element (33) of a transmission optical link (3), a frame signal which includes an electric current value code indicative of the magnitude of the electric current fed to light emitting element (33) is simultaneously delivered to a receiver (20) through optical fiber (5) from a transmitter (10).
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: November 30, 1993
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Shigenori Torihata
  • Position-sensitive photodetector and light transmissive tablet and light-emitting pen
    Patent number: 4794634
    Abstract: The data input device comprises a tablet portion made of a two-dimensional position-sensitive photodetector and a planar display element laid one on the other, and a light emitting pen forming a light spot on a light-receiving surface of the position-sensitive photodetector. The locus of the movement of the light emitting pen is displayed on the surface of the planar display element at correspond positions in accordance with the output of the two-dimensional position-sensitive photodetector, and the contents of the display provided on the planar displaying element are allowed to be delivered for subsequent processings.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: December 27, 1988
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Shigenori Torihata, Hisaakira Imaizumi, Toru Suzuki, Tomoo Matsuda, Masatake Hirooka, Yokichi Nishi, Mitsuo Hosoi, Naoya Tsurumaki, Yukitaka Takitani
  • Semiconductor photoelectric conversion device for light incident position detection
    Patent number: 4761547
    Abstract: The position detector comprises a semiconductor layer of i type amorphous silicon layer and a P type amorphous silicon layer is formed on one surface thereof and an N type amorphous layer is formed on the opposite surface. A transparent resistance layer is formed on one surface of the semiconductor layer. Collector electrodes are provided at the sides of the resistance layer for deriving out a position signal.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: August 2, 1988
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Shigenori Torihata, Kazuto Togino, Akira Okamoto, Haruo Hashimoto, Yukitaka Takitani, Hisaakira Imaizumi, Hiroshi Miyata