公开(公告)号：US12193848B2

公开(公告)日：2025-01-14

申请号：US17149905

申请日：2021-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seung Keun Yoon ,  Ui Kun Kwon ,  Young Soo Kim ,  Dae Geun Jang

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/0295 ,  A61B5/0535 ,  A61B5/11 ,  A61B5/308 ,  A61B5/313

Abstract: A method of determining regularity of a bio-signal is provided. The method of determining regularity of a bio-signal according may include acquiring a plurality of pulse waveforms of the bio-signal, acquiring a plurality of slope waveforms corresponding to the plurality of pulse waveforms, binarizing the plurality of slope waveforms, acquiring synchronization information of the plurality of pulse waveforms based on binarizing the plurality of pulse waveforms; acquiring a synchronization rate of a reference interval based on the synchronization information, and determining whether the bio-signal is regular or irregular based on the synchronization rate of the reference interval.

公开(公告)号：US12186059B2

公开(公告)日：2025-01-07

申请号：US17484552

申请日：2021-09-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon Park ,  Ui Kun Kwon ,  Dae Geun Jang ,  Young Soo Kim

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/02 ,  A61B5/0205 ,  A61B5/026 ,  A61B5/029 ,  A61B5/11

Abstract: An adaptive bio-signal feature combining apparatus includes: a feature extractor configured to extract first feature values and second feature values from a bio-signal of an object; a stable interval determiner configured to determine at least one stable interval in the bio-signal; a statistical variable calculator configured to calculate a statistical variable value of a first feature and a statistical variable value of a second feature for each of the at least one stable interval based on the first and second feature values extracted from the at least one stable interval; and a feature combiner configured to calculate an integrated combining coefficient that is used to combine the first feature and the second feature, based on the statistical variable value of the first feature and the statistical variable value of the second feature.

公开(公告)号：US12150790B2

公开(公告)日：2024-11-26

申请号：US17489130

申请日：2021-09-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon Park ,  Ui Kun Kwon ,  Young Soo Kim ,  Dae Geun Jang

IPC: A61B5/00 ,  A61B5/021 ,  A61B5/024 ,  A61B5/029

Abstract: A method of obtaining a feature for blood pressure estimation is provided. The method includes extracting a reference feature from a bio-signal; obtaining a feature for blood pressure estimation by: obtaining, as the feature for blood pressure estimation, a first candidate feature based on the reference feature being less than a first threshold; obtaining, 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; or obtaining, 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 less than the second threshold; and estimating a blood pressure by using the obtained feature.

公开(公告)号：US12082948B2

公开(公告)日：2024-09-10

申请号：US17322458

申请日：2021-05-17

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  University of Maryland, College Park

Inventor： Dae Geun Jang ,  Peyman Yousefian ,  Jin-Oh Hahn ,  Ui Kun Kwon ,  Youn Ho Kim ,  Sungtae Shin

IPC: A61B5/00 ,  A61B5/021 ,  A61B5/11 ,  A61B5/352 ,  G16H50/50 ,  A61B5/024 ,  A61B5/0245

CPC classification number: A61B5/7278 ,  A61B5/02125 ,  A61B5/1102 ,  A61B5/352 ,  A61B5/7275 ,  G16H50/50 ,  A61B5/02416 ,  A61B5/0245

Abstract: An apparatus for generating a blood pressure estimation model includes: a signal acquirer configured to receive input a first signal and a second signal from a user; and a processor configured to obtain a pulse transit time (PTT) as a first predictor variable value based on the first signal and the second signal, to extract at least one feature from the second signal, to obtain a second predictor variable value based on the extracted at least one feature, and to generate a blood pressure estimation model based on the first predictor variable value and the second predictor variable value.

公开(公告)号：US12059273B2

公开(公告)日：2024-08-13

申请号：US16843104

申请日：2020-04-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ui Kun Kwon ,  Chang Soon Park ,  Seung Keun Yoon ,  Dae Geun Jang

IPC: A61B5/00 ,  A61B5/02 ,  A61B5/021 ,  A61B5/024 ,  A61B5/16

CPC classification number: A61B5/7278 ,  A61B5/02007 ,  A61B5/02116 ,  A61B5/02125 ,  A61B5/024 ,  A61B5/165 ,  A61B5/681 ,  A61B5/6898

Abstract: Provided is an apparatus for estimating bio-information. The apparatus for estimating bio-information according to an embodiment includes a processor configured to obtain a pulse wave signal from a user; extract components of a plurality of element waveforms which constitute a waveform of the pulse wave signal; and obtain a cardiovascular feature based on the extracted components of the plurality of element waveforms. The processor is configured to extract a component of at least one element waveform based on a component of an adjacent element waveform.

公开(公告)号：US12053306B2

公开(公告)日：2024-08-06

申请号：US16415134

申请日：2019-05-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon Park ,  Ui Kun Kwon ,  Youn Ho Kim ,  Seung Keun Yoon ,  Dae Geun Jang

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/029 ,  A61B5/024

CPC classification number: A61B5/7278 ,  A61B5/021 ,  A61B5/02116 ,  A61B5/02125 ,  A61B5/029 ,  A61B5/024

Abstract: An apparatus for estimating blood pressure is provided. According to one embodiment, the apparatus for estimating blood pressure may include a sensor configured to measure a bio-signal from a subject, and a processor configured to acquire, form the bio-signal, a first feature value associated with cardiac output (CO) and a second feature value associated with total peripheral resistance (TPR), determine whether a current mechanism of blood pressure change of the subject is a post-exercise hypotension mechanism based on the first feature value and the second feature value, and estimate blood pressure according to determination of whether the current mechanism is the post-exercise hypotension mechanism.

公开(公告)号：US11911184B2

公开(公告)日：2024-02-27

申请号：US17940678

申请日：2022-09-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Geun Jang ,  Ui Kun Kwon ,  Seung Keun Yoon

IPC: A61B5/00 ,  G16H40/63 ,  A61B5/0205 ,  A61B5/35 ,  A61B5/024 ,  A61B5/11 ,  A61B7/04

CPC classification number: A61B5/7221 ,  A61B5/0205 ,  A61B5/7246 ,  G16H40/63 ,  A61B5/02405 ,  A61B5/02416 ,  A61B5/1102 ,  A61B5/35 ,  A61B7/04

Abstract: A bio-signal quality assessment apparatus may include: a bio-signal obtainer configured to obtain a bio-signal; and a processor configured to extract periodic signals from the obtained bio-signal, and determine a signal quality index based on at least one of similarity between the extracted periodic signals and signal variability of the obtained bio-signal.

公开(公告)号：US11898882B2

公开(公告)日：2024-02-13

申请号：US17984880

申请日：2022-11-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon Park ,  Ui Kun Kwon ,  Seung Keun Yoon ,  Dae Geun Jang

IPC: G08B21/04 ,  G01D18/00 ,  A61B5/021

CPC classification number: G01D18/00 ,  A61B5/021 ,  A61B2560/0223

Abstract: An apparatus for calibration of a bio-information estimation model includes a sensor configured to obtain a bio-signal from an object in a reference interval; a feature extractor, implemented by at least one processor, configure to extract a reference feature value from the bio-signal; and a calibrator, implemented by the at least one processor, configured to determine whether a condition is satisfied based on at least one of the reference feature value and an offset value, and based on determining that the condition is satisfied, configured to calibrate the bio-information estimation model based on the reference feature value and the offset value.

公开(公告)号：US20230301526A1

公开(公告)日：2023-09-28

申请号：US18328257

申请日：2023-06-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ui Kun Kwon ,  Chang Soon Park ,  Dae Geun Jang

IPC: A61B5/021 ,  A61B5/00

CPC classification number: A61B5/02116 ,  A61B5/021 ,  A61B5/02125 ,  A61B5/681 ,  A61B5/7275 ,  A61B5/746 ,  A61B2560/0228

Abstract: An apparatus for non-invasively estimating blood pressure is provided. Thee apparatus for estimating blood pressure may include a bio-signal measurer configured to measure a bio-signal from a user and a processor configured to estimate blood pressure using the measured bio-signal. The processor may extract a first feature and a second feature from the bio-signal at an extraction time, estimate changes in the first feature and the second feature which have occurred during a time period from a calibration time at which the first feature and the second feature are calibrated to the extraction time at which the first feature and the second feature are extracted, and estimate a blood pressure based on the changes in the first feature and the second feature.

公开(公告)号：US11284843B2

公开(公告)日：2022-03-29

申请号：US16273293

申请日：2019-02-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon Park ,  Ui Kun Kwon ,  Yunseo Ku ,  Seung Woo Noh ,  Seung Keun Yoon ,  Dae Geun Jang

IPC: A61B5/021 ,  G16H50/30 ,  G16H50/20 ,  A61B5/00 ,  A61B5/145

Abstract: An apparatus for estimating bio-information may include: a bio-signal acquirer configured to acquire a bio-signal; and a processor configured to extract one or more first feature values from the bio-signal, determine a scale factor based on the first feature values, and to estimate bio-information based on the scale factor and the first feature values.