Patents by Inventor Yoshiharu SHIRATORI

Yoshiharu SHIRATORI 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).

  • Sensitivity adjustment device
    Patent number: 9247171
    Abstract: A sensitivity adjustment device may include: a light receiver configured to receive a reflected light that has been emitted from a light emitting unit and reflected by a reflector, the light receiver being configured to convert the reflected light into an analog electrical signal; an A/D converter configured to convert the analog electrical signal into a digital signal; a threshold value calculator configured to calculate a threshold value with reference to a voltage level of the digital signal that has been sequentially converted and output by the A/D converter; and a determination unit configured to compare a high voltage level of the digital signal with the threshold value.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: January 26, 2016
    Assignee: Yokogawa Electric Corporation
    Inventors: Shunsuke Ebisumoto, Kazuhiro Hashizumi, Yoshiharu Shiratori
  • SENSITIVITY ADJUSTMENT DEVICE
    Publication number: 20140077084
    Abstract: A sensitivity adjustment device may include: a light receiver configured to receive a reflected light that has been emitted from a light emitting unit and reflected by a reflector, the light receiver being configured to convert the reflected light into an analog electrical signal; an A/D converter configured to convert the analog electrical signal into a digital signal; a threshold value calculator configured to calculate a threshold value with reference to a voltage level of the digital signal that has been sequentially converted and output by the A/D converter; and a determination unit configured to compare a high voltage level of the digital signal with the threshold value.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 20, 2014
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Shunsuke EBISUMOTO, Kazuhiro HASHIZUMI, Yoshiharu SHIRATORI