US 12,279,892 B2
Methods and apparatus for detecting motion via optomechanics
Jonathan T. Walter, Wake Forest, NC (US); Steven Matthew Just, Cary, NC (US); Wolfgang Wagner, Chapel Hill, NC (US); Steven Francis LeBoeuf, Raleigh, NC (US); Jesse Berkley Tucker, Youngsville, NC (US); Michael Edward Aumer, Raleigh, NC (US); Lawrence Christopher Eschbach, Louisburg, NC (US); and Seth Long, Raleigh, NC (US)
Assigned to Yukka Magic LLC, Wilmington, DE (US)
Filed by YUKKA MAGIC LLC, Wilmington, DE (US)
Filed on Aug. 17, 2020, as Appl. No. 16/995,127.
Application 16/995,127 is a continuation of application No. 15/751,733, granted, now 10,856,812, previously published as PCT/US2016/046273, filed on Aug. 10, 2016.
Claims priority of provisional application 62/345,579, filed on Jun. 3, 2016.
Claims priority of provisional application 62/257,502, filed on Nov. 19, 2015.
Claims priority of provisional application 62/204,214, filed on Aug. 12, 2015.
Prior Publication US 2020/0375547 A1, Dec. 3, 2020
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01)
CPC A61B 5/721 (2013.01) [A61B 5/02416 (2013.01); A61B 5/14551 (2013.01); A61B 5/14552 (2013.01); A61B 5/6804 (2013.01); A61B 5/6817 (2013.01); A61B 5/6843 (2013.01); A61B 5/7214 (2013.01); A61B 5/6802 (2013.01); A61B 2562/146 (2013.01); A61B 2562/185 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of removing motion artifacts from a biometric signal generated by a sensor module worn by a subject, wherein the sensor module includes at least one optical emitter and at least one optical detector, the method comprising:
directing light from the at least one optical emitter:
at a first light guide along a first optical pathway, the first light guide configured to cause the light directed along the first optical pathway to enter into a body of the subject; and
at a second light guide along a second optical pathway, the second light guide configured to cause the light directed along the second optical pathway to be reflected from a skin surface of subject;
detecting light that has entered the body of the subject along the first optical pathway from the body of the subject and generating a first signal comprising subject physiological information via the at least one optical detector;
detecting light reflected by the skin surface of the subject along the second optical pathway and generating a second signal comprising subject motion information via the at least one optical detector; and
processing the first and second signals to remove motion artifacts from the first signal using the subject motion information.