US 11,864,871 B2
Wearable device and method of measuring bio-signal
Jae Min Kang, Seoul (KR); Seung Woo Noh, Seongnam-si (KR); Sang Yun Park, Hwaseong-si (KR); and Jin Woo Choi, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 6, 2020, as Appl. No. 17/091,832.
Claims priority of application No. 10-2020-0072335 (KR), filed on Jun. 15, 2020.
Prior Publication US 2021/0386298 A1, Dec. 16, 2021
Int. Cl. A61B 5/024 (2006.01); A61B 5/0205 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 5/16 (2006.01)
CPC A61B 5/0205 (2013.01) [A61B 5/0002 (2013.01); A61B 5/0077 (2013.01); A61B 5/02007 (2013.01); A61B 5/02416 (2013.01); A61B 5/165 (2013.01); A61B 5/681 (2013.01); A61B 5/6803 (2013.01); A61B 2560/0214 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A wearable device, comprising:
an external light collector configured to collect external light;
a sensor comprising an auxiliary light source and a light receiver, the sensor being configured to measure a bio-signal of a user; and
a processor configured to determine whether the external light is sufficient to measure the bio-signal, and to control driving of the auxiliary light source based on the determination,
wherein the processor is configured to extract a frequency component by filtering the bio-signal measured using only the external light when the auxiliary light source is turned off at an early stage of measurement of the bio-signal, and to determine whether the external light is sufficient to measure the bio-signal based on an amplitude of the extracted frequency component.