Patents by Inventor Yoko HASADA

Yoko HASADA 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).

  • Vibration detecting system, signal processing apparatus and signal processing method
    Patent number: 10281601
    Abstract: A vibration detection system includes a seismic source device that generates a vibration wave repeated with a predetermined period, a vibration receiving device that receives a response wave due to the vibration wave transmitted via the ground, and a signal processing apparatus that processes measured vibration signals received by the vibration receiving device. The signal processing apparatus includes a separating part that separates individual periodic signals having a period according to a periodicity of the vibration wave generated by the seismic source from the measured vibration signals, the calculating part that calculates the standard periodic signal from the separated individual periodic signals, and the generating part that subtracts the standard periodic signal from the measured vibration signals and generates differential signals.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: May 7, 2019
    Assignees: Japan Oil, Gas and Metals National Corporation, Junzo KASAHARA
    Inventors: Mamoru Takanashi, Ayato Kato, Junzo Kasahara, Yoko Hasada
  • VIBRATION DETECTING SYSTEM, SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD
    Publication number: 20170068004
    Abstract: A vibration detection system includes a seismic source device that generates a vibration wave repeated with a predetermined period, a vibration receiving device that receives a response wave due to the vibration wave transmitted via the ground, and a signal processing apparatus that processes measured vibration signals received by the vibration receiving device. The signal processing apparatus includes a separating part that separates individual periodic signals having a period according to a periodicity of the vibration wave generated by the seismic source from the measured vibration signals, the calculating part that calculates the standard periodic signal from the separated individual periodic signals, and the generating part that subtracts the standard periodic signal from the measured vibration signals and generates differential signals.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Inventors: Mamoru TAKANASHI, Ayato KATO, Junzo KASAHARA, Yoko HASADA