Patents by Inventor Yoichi Funahashi

Yoichi Funahashi 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).

  • Method for analyzing signal waveform and analyzing vehicle dynamic characteristic
    Patent number: 7523011
    Abstract: A signal waveform analysis method includes: determining a trend component of an object signal by applying a zero-phase filter to the object signal; determining an oscillatory component of the object signal by removing the trend component from the object signal; determining a wavelet scalogram by performing a wavelet analysis on the oscillatory component; and determining an oscillation period of the object signal with which the wavelet scalogram indicates a maximum. The signal waveform analysis method is employed to evaluate vehicle dynamic characteristics.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: April 21, 2009
    Assignees: Meidensha Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Takao Akiyama, Masahiko Suzuki, Tatsuya Sagiyama, Teruo Yoshida, Yoichi Funahashi
  • Method for analyzing signal waveform and analyzing vehicle dynamic characteristic
    Publication number: 20070071327
    Abstract: A signal waveform analysis method includes: determining a trend component of an object signal by applying a zero-phase filter to the object signal; determining an oscillatory component of the object signal by removing the trend component from the object signal; determining a wavelet scalogram by performing a wavelet analysis on the oscillatory component; and determining an oscillation period of the object signal with which the wavelet scalogram indicates a maximum. The signal waveform analysis method is employed to evaluate vehicle dynamic characteristics.
    Type: Application
    Filed: September 26, 2006
    Publication date: March 29, 2007
    Inventors: Takao Akiyama, Masahiko Suzuki, Tatsuya Sagiyama, Teruo Yoshida, Yoichi Funahashi