公开(公告)号：US20210228100A1

公开(公告)日：2021-07-29

申请号：US17038692

申请日：2020-09-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon PARK ,  Ui Kun KWON ,  Seung Keun YOON ,  Dae Geun JANG

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

Abstract: An apparatus for estimating bio-information may include a sensor configured to obtain a bio-signal from an object, and a processor configured to obtain a second-order differential signal of the bio-signal, and extract a progressive wave component from the bio-signal using, based on a first local minimum point of the second-order differential signal being stable, the first local minimum point of the second-order differential signal, or extract the progressive wave component from the bio-signal using, based on the first local minimum point of the second-order differential signal being unstable, a maximum amplitude point in a systolic portion of the bio-signal.

公开(公告)号：US20230309844A1

公开(公告)日：2023-10-05

申请号：US17893521

申请日：2022-08-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

CPC classification number: A61B5/02416 ,  A61B5/02108 ,  A61B5/7235 ,  A61B5/7203

Abstract: An apparatus and method for estimating blood pressure are provided. The apparatus for estimating blood pressure includes: a photoplethysmogram (PPG) sensor configured to measure a PPG signal from an object; and a processor configured to: obtain a blood pressure variation for each of a plurality of blood pressure estimation models based on the PPG signal by using the plurality of blood pressure estimation models, obtain a combining coefficient for each of the plurality of blood pressure estimation models based on the obtained blood pressure variations, and estimate blood pressure by using the obtained combining coefficients.

公开(公告)号：US20230190118A1

公开(公告)日：2023-06-22

申请号：US17839722

申请日：2022-06-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon PARK ,  Ui Kun KWON ,  Young Soo KIM ,  Dae Geun JANG

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

CPC classification number: A61B5/02125 ,  A61B5/681 ,  A61B5/02416

Abstract: An apparatus for estimating blood pressure may include: a memory storing one or more instructions; and a processor configured to execute the one or more instructions to: extract a cardiac output (CO) feature, a first candidate total peripheral resistance (TPR) feature, and a second candidate TPR feature from a bio-signal; determine one of the first candidate TPR feature and the second candidate TPR feature as a TPR feature based on a direction of change in the CO feature and a direction of change in the first candidate TPR feature between a blood pressure measurement time and a calibration time; and estimate the blood pressure based on the TPR feature and the CO feature.

公开(公告)号：US20210068762A1

公开(公告)日：2021-03-11

申请号：US16874843

申请日：2020-05-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon PARK ,  Seung Keun YOON ,  Dae Geun JANG

IPC: A61B5/00 ,  A61B5/0205 ,  G16H40/67 ,  G16H50/30

Abstract: An apparatus for estimating bio-information includes: a sensor configured to obtain a bio-signal from an object; and a processor configured to obtain a second-order differential signal of the bio-signal, to detect at least one of an inflection point in a predetermined period of the second-order differential signal, and a zero-crossing point in the predetermined period of the second-order differential signal, to extract a feature based on the detected at least one of the inflection point and the zero-crossing point, and to estimate bio-information based on the extracted feature.

公开(公告)号：US20200033164A1

公开(公告)日：2020-01-30

申请号：US16409190

申请日：2019-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon PARK ,  Ui Kun KWON ,  Seung Keun YOON ,  Dae Geun JANG

IPC: G01D18/00

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：US20180177466A1

公开(公告)日：2018-06-28

申请号：US15856234

申请日：2017-12-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon PARK ,  Ui Kun KWON ,  Dae Geun JANG ,  Young Soo KIM

IPC: A61B5/00 ,  A61B5/021

CPC classification number: A61B5/7278 ,  A61B5/02007 ,  A61B5/02028 ,  A61B5/0205 ,  A61B5/021 ,  A61B5/02108 ,  A61B5/0261 ,  A61B5/029 ,  A61B5/0402 ,  A61B5/0488 ,  A61B5/1102 ,  A61B5/1118 ,  A61B5/721 ,  A61B5/7232 ,  A61B5/7239 ,  A61B5/7246 ,  A61B5/7264 ,  A61B2505/07 ,  A61B2562/0219

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：US20240115212A1

公开(公告)日：2024-04-11

申请号：US18121453

申请日：2023-03-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Geun JANG

IPC: A61B5/00

CPC classification number: A61B5/7278 ,  A61B5/681 ,  A61B5/746 ,  A61B2560/0223

Abstract: An apparatus for estimating physiological variables includes: a sensor configured to measure a bio-signal from an object; and a processor. The processor is configured to: configure input data for use in a neural network-based physiological variable estimation model based on bio-signal data measured at different times by the sensor, and input the configured input data to the physiological variable estimation model to obtain a variation in physiological variables over a time period from a calibration time to a current time.

公开(公告)号：US20230157554A1

公开(公告)日：2023-05-25

申请号：US18151847

申请日：2023-01-09

Applicant: SAMSUNG ELECTRONICS CO, LTD.

Inventor： Dae Geun JANG

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

CPC classification number: A61B5/02116 ,  A61B5/02108 ,  A61B5/02416 ,  A61B5/7203 ,  A61B5/7239 ,  A61B5/7278 ,  A61B5/7235 ,  G06F2218/06 ,  H04W4/80

Abstract: An apparatus and method for detecting a bio-signal feature are provided. The apparatus according to one aspect may include: a bio-signal acquirer configured to acquire a bio-signal; and a processor configured to generate an envelope signal of the bio-signal, and detect at least one feature of the bio-signal based on a difference between the envelope signal and the bio-signal.

公开(公告)号：US20220265220A1

公开(公告)日：2022-08-25

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：US20200054290A1

公开(公告)日：2020-02-20

申请号：US16414446

申请日：2019-05-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Geun JANG ,  Ui Kun KWON ,  Chang Soon PARK

IPC: A61B5/00 ,  A61B5/021 ,  A61B5/0402 ,  A61B5/0488 ,  A61B5/11 ,  A61B5/029

Abstract: An apparatus for non-invasively estimating blood pressure is provided. According to one embodiment, the apparatus for estimating blood pressure may include a bio-signal sensor configured to measure a bio-signal from a user and a processor configured to extract a feature from the bio-signal at an extraction time, acquire an offset based on a relative change value of the feature extracted at the extraction time, relative to a reference value of the feature obtained a time of calibration, and estimate blood pressure based on the relative change value of the extracted feature and the acquired offset.