Patents by Inventor Kihwan Ju

Kihwan Ju 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).

  • Photoplethysmography apparatus and method employing high resolution estimation of time-frequency spectra
    Publication number: 20080287815
    Abstract: A photoplethysmography apparatus and method is provided for high resolution estimating of Time-Frequency Spectra (TFS) and associated amplitudes using Variable Frequency Complex Demodulation (VFCDM), in a two-step procedure using a Time-Varying Optimal Parameter Search (TVOPS) technique to obtain TFS, followed by VFCDM to obtain even greater TFS resolution and instantaneous amplitudes associated with only specific frequencies of interest, via the combined TVOPS and VFCDM.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 20, 2008
    Applicant: The Research Foundation of State University of New York
    Inventors: Ki H. Chon, Kihwan Ju