Invention Grant
- Patent Title: Photoplethysmography apparatus and method employing high resolution estimation of time-frequency spectra
- Patent Title (中): 光电体积描记术装置和方法采用高分辨率估计时频谱
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Application No.: US11803770Application Date: 2007-05-16
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Publication No.: US08388543B2Publication Date: 2013-03-05
- Inventor: Ki H. Chon , Kilwan Ju
- Applicant: Ki H. Chon , Kilwan Ju
- Applicant Address: US NY Albany
- Assignee: The Research Foundation of State University of New York
- Current Assignee: The Research Foundation of State University of New York
- Current Assignee Address: US NY Albany
- Agency: The Farrell Law Firm, P.C.
- Main IPC: A61B5/02
- IPC: A61B5/02
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.
Public/Granted literature
- US20080287815A1 Photoplethysmography apparatus and method employing high resolution estimation of time-frequency spectra Public/Granted day:2008-11-20
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