Patents by Inventor Hirokazu SHIMOMAKI

Hirokazu SHIMOMAKI 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).

  • Positioning system and method
    Patent number: 9733352
    Abstract: According to an embodiment, positioning system includes transmitter apparatus transmits radio wave and receiver apparatus receives target echo. Transmitter apparatus comprises first receiver and transmitter. First receiver receives GPS signal and outputs reference signal. Transmitter transmits radio wave at time interval based on reference signal. The receiver apparatus includes second receiver, detector and first and second calculators. Second receiver receives GPS signal and outputs time information. Detector receives target echo and outputs reception signal added received time information. First calculator calculates Doppler frequency based on reception frequency and transmission frequency. Second calculator calculates time difference of echo based on Doppler frequency. Detector sets time filter to receive next pulse based on time difference and time information of reception signal.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: August 15, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Hirokazu Shimomaki
  • POSITIONING SYSTEM AND METHOD
    Publication number: 20150247929
    Abstract: According to an embodiment, positioning system includes transmitter apparatus transmits radio wave and receiver apparatus receives target echo. Transmitter apparatus comprises first receiver and transmitter. First receiver receives GPS signal and outputs reference signal. Transmitter transmits radio wave at time interval based on reference signal. The receiver apparatus includes second receiver, detector and first and second calculators. Second receiver receives GPS signal and outputs time information. Detector receives target echo and outputs reception signal added received time information. First calculator calculates Doppler frequency based on reception frequency and transmission frequency. Second calculator calculates time difference of echo based on Doppler frequency. Detector sets time filter to receive next pulse based on time difference and time information of reception signal.
    Type: Application
    Filed: July 2, 2014
    Publication date: September 3, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Hirokazu SHIMOMAKI