The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2025
Filed:
Aug. 04, 2021
University of Maryland, College Park, College Park, MD (US);
United States of America, As Represented BY the Secretary, Department of Health and Human Services, Washington, DC (US);
Min Wu, Clarksville, MD (US);
Mingliang Chen, College Park, MD (US);
Qiang Zhu, College Park, MD (US);
Quanzeng Wang, Olney, MD (US);
UNIVERSITY OF MARYLAND, COLLEGE PARK, College Park, MD (US);
UNITED STATES OF AMERICA, AS REPRESENTED BY SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES, Washington, DC (US);
Abstract
An apparatus for vital sign extraction. The apparatus may receive a vital signal of a subject from a sensing device. The apparatus may also perform a preprocessing procedure on the vital signal via bandpass filtering and normalization to obtain a preprocessed signal. The apparatus may also perform a time-frequency analysis of the preprocessed signal, and estimate a heart rate of the subject from a dominant component of the preprocessed signal by finding location of a maximum spectral energy of the time-frequency analysis. In addition, the apparatus may identify guard components in the preprocessed signal in view of the dominant component, and derive a respiratory rate of the subject from a length of an interval between the dominant component and each of the guard components.