Patents by Inventor Yoshihito Tekawa

Yoshihito Tekawa 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).

  • Optical path monitoring device and optical path monitoring system
    Patent number: 8264677
    Abstract: An optical path monitoring device according to the present invention includes: a measurement unit which irradiates optical pulses to an optical path as a monitoring target to cause back scattered lights, the measurement unit generating measurement data based on the back scattered lights; and a processing unit which controls operation of the measurement unit, the processing unit acquiring the measurement data from the measurement unit, the processing unit performing an arithmetic processing of the measurement data to identify an abnormal point of the optical path, and after acquiring the measurement data the processing unit sending the measurement unit instructions to start the next measurement.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: September 11, 2012
    Assignee: Yokogawa Electric Corporation
    Inventor: Yoshihito Tekawa
  • OPTICAL PATH MONITORING DEVICE AND OPTICAL PATH MONITORING SYSTEM
    Publication number: 20090323050
    Abstract: An optical path monitoring device according to the present invention includes: a measurement unit which irradiates optical pulses to an optical path as a monitoring target to cause back scattered lights, the measurement unit generating measurement data based on the back scattered lights; and a processing unit which controls operation of the measurement unit, the processing unit acquiring the measurement data from the measurement unit, the processing unit performing an arithmetic processing of the measurement data to identify an abnormal point of the optical path, and after acquiring the measurement data the processing unit sending the measurement unit instructions to start the next measurement.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 31, 2009
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Yoshihito TEKAWA