Patents by Inventor Yasumasa SAWAMURA

Yasumasa SAWAMURA 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).

  • Sonar device, signal processing method, and recording medium
    Patent number: 10274576
    Abstract: Provided are a sonar device, signal processing method, and recording medium which contribute to improvement in target signal detection ability of an operator. The sonar device comprises a signal detection processing unit and a noise suppression processing unit. The signal detection processing unit calculates a direction vector for each frequency cell and also calculates a resultant vector direction obtained by summing up the direction vectors of all the frequency cells.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: April 30, 2019
    Assignee: NEC CORPORATION
    Inventors: Yasumasa Sawamura, Ryohei Saito
  • SONAR DEVICE, SIGNAL PROCESSING METHOD, AND RECORDING MEDIUM
    Publication number: 20170045604
    Abstract: Provided are a sonar device, signal processing method, and recording medium which contribute to improvement in target signal detection ability of an operator. The sonar device comprises a signal detection processing unit and a noise suppression processing unit. The signal detection processing unit calculates a direction vector for each frequency cell and also calculates a resultant vector direction obtained by summing up the direction vectors of all the frequency cells.
    Type: Application
    Filed: May 14, 2015
    Publication date: February 16, 2017
    Applicant: NEC Corporation
    Inventors: Yasumasa SAWAMURA, Ryohei SAITO