公开(公告)号：US20240081663A1

公开(公告)日：2024-03-14

申请号：US18118562

申请日：2023-03-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Soon PARK ,  Ui Kum Kwon ,  Young Soo Kim ,  Hye Rim Lim

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

CPC classification number: A61B5/02116 ,  A61B5/02416 ,  A61B5/7221

Abstract: An apparatus for non-invasively estimating bio-information and a method of determining whether a bio-signal is normal by the apparatus for estimating bio-information are provided. The apparatus for estimating bio-information according to an embodiment of the disclosure includes: a photoplethysmogram (PPG) sensor configured to measure a PPG signal from an object; and a processor configured to extract a plurality of pairs of local maximum points and local minimum points from a second derivative signal of the PPG signal, to select at least one reference pair from among the extracted plurality of pairs, and to determine whether the PPG signal is normal based on the selected at least one reference pair.

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：US20220233079A1

公开(公告)日：2022-07-28

申请号：US17580312

申请日：2022-01-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

Abstract: An apparatus for estimating blood pressure is provided. The apparatus for estimating blood pressure according to an example embodiment includes: a sensor configured to measure a photoplethysmogram (PPG) signal from an object; and a processor configured to detect a position of a dicrotic notch based on a local maximum point and a local minimum point of a second-order derivative signal of the PPG signal, to obtain a first value and a second value from a first section and a second section of the PPG signal divided based on the dicrotic notch of the PPG signal, to obtain a pulse pressure feature value based on the first value and the second value, and to estimate blood pressure based on a variation in the obtained pulse pressure feature value compared to a reference pulse pressure feature value.

公开(公告)号：US20220117563A1

公开(公告)日：2022-04-21

申请号：US17564434

申请日：2021-12-29

Applicant: Samsung Electronics Co., LTD.

Inventor： Chang Soon PARK ,  Ui Kun KWON

IPC: A61B5/00 ,  A61B5/0205 ,  A61B5/021 ,  A61B5/02 ,  A61B5/16 ,  A61B5/024 ,  G16H50/30

Abstract: An apparatus for non-invasively estimating bio-information is provided. According to one exemplary embodiment, the apparatus may include a bio-signal acquirer configured to acquire a bio-signal; and a processor configured to extract a plurality of characteristic points from the bio-signal, determine internally dividing points of the plurality of characteristic points, and extract feature values from the bio-signal based on the internally dividing points to perform bio-information estimation.

公开(公告)号：US20210360092A1

公开(公告)日：2021-11-18

申请号：US17388370

申请日：2021-07-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chang Soon PARK ,  Young Jun HONG ,  Youngsoo KIM ,  Hyosun HWANG

IPC: H04L29/06 ,  H04L1/00

Abstract: A method of a transmitter transmitting a packet encoded by applying a coding scheme based on a wireless channel environment to a receiver, and a method of the receiver detecting the coding scheme applied to the encoded packet and decoding the packet, in which the transmitter applies a spreading factor corresponding to the coding scheme to a preamble of the packet, and the receiver decodes the packet by detecting the coding scheme using the preamble.

公开(公告)号：US20210282648A1

公开(公告)日：2021-09-16

申请号：US17010949

申请日：2020-09-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: A61B5/0245 ,  A61B5/021 ,  A61B5/024

Abstract: An apparatus for estimating bio-information, the apparatus including a sensor configured to obtain a bio-signal of a subject; and a processor configured to estimate a variation in a Cardiac Output (CO)-related feature from the bio-signal, and obtain a progressive wave component, which is associated with a Total Peripheral Resistance (TPR)-related feature, from the bio-signal based on an estimation result of estimating the variation.

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：US20200245952A1

公开(公告)日：2020-08-06

申请号：US16858157

申请日：2020-04-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

Abstract: A feature extraction apparatus configured to perform biometric information detection includes a bio-signal obtainer configured to acquire a bio-signal; and a processor configured to decompose a waveform of the acquired bio-signal into component pulses and extract a feature for the biometric information detection based on characteristic points of the component pulses.

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：US20190341949A1

公开(公告)日：2019-11-07

申请号：US16512890

申请日：2019-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ui Kun KWON ,  Chang Soon PARK ,  Seungkeun YOON ,  Sang Joon KIM ,  Jaechun LEE ,  Changmok CHOI

IPC: H04B1/04 ,  H04L25/03 ,  H04L25/06

Abstract: A signal processing method, a signal filtering apparatus, and a signal processing apparatus are provided. An input signal may be input into a filter having a passband, a superfluous signal of the passband may be output from the filter, and a target signal may be obtained by subtracting the superfluous signal from the input signal.