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:
Aug. 27, 2019
Filed:
Dec. 24, 2012
Applicant:
Valencell Inc., Raleigh, NC (US);
Inventor:
Eric Douglas Romesburg, Chapel Hill, NC (US);
Assignee:
VALENCELL, INC., Raleigh, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 5/1455 (2006.01);
U.S. Cl.
CPC ...
A61B 5/7235 (2013.01); A61B 5/02416 (2013.01); A61B 5/14551 (2013.01); A61B 5/6801 (2013.01); A61B 5/7203 (2013.01); A61B 5/742 (2013.01); A61B 5/02438 (2013.01); A61B 5/6815 (2013.01); A61B 5/725 (2013.01); A61B 5/7257 (2013.01); A61B 2560/0223 (2013.01);
Abstract
Methods and apparatus disclosed herein use a filtering technique to improve the accuracy of the results achieved when processing data provided by a physiological sensor. The disclosed filtering technique corrects many of the accuracy problems associated with physiological sensors, particularly PPG sensors. Broadly, the filtering technique adjusts a current filtered estimate of a physiological metric as a function of a rate limit based on a comparison between an instantaneous estimate of the physiological metric and the current filtered estimate.