	US 12,150,790 B2
	Method of obtaining feature for blood pressure estimation, apparatus and method for estimating blood pressure
Chang Soon Park, Chungju-si (KR); Ui Kun Kwon, Hwaseong-si (KR); Young Soo Kim, Seoul (KR); and Dae Geun Jang, Yongin-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Sep. 29, 2021, as Appl. No. 17/489,130.
Claims priority of application No. 10-2021-0022413 (KR), filed on Feb. 19, 2021.
Prior Publication US 2022/0265220 A1, Aug. 25, 2022
Int. Cl. A61B 5/00 (2006.01); A61B 5/021 (2006.01); A61B 5/024 (2006.01); A61B 5/029 (2006.01)

CPC A61B 5/7278 (2013.01) [A61B 5/02116 (2013.01); A61B 5/02125 (2013.01); A61B 5/024 (2013.01); A61B 5/029 (2013.01); A61B 5/7239 (2013.01); A61B 2560/0223 (2013.01)]

20 Claims

1. A method of obtaining a feature for blood pressure estimation, the method comprising:

extracting a reference feature from a bio-signal;

obtaining a feature for blood pressure estimation by:

determining, as the feature for blood pressure estimation, a first candidate feature based on the reference feature being less than a first threshold;

determining, as the feature for blood pressure estimation, a second candidate feature based on the reference feature being greater than or equal to a second threshold that is greater than the first threshold; and

determining, as the feature for blood pressure estimation, a combination of the first candidate feature and the second candidate feature based on the reference feature being greater than or equal to the first threshold and less than the second threshold; and

estimating a blood pressure by using the obtained feature.