公开(公告)号：US20230058966A1

公开(公告)日：2023-02-23

申请号：US17939626

申请日：2022-09-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Viacheslav Sergeevich KHOLOBURDIN ,  Vladislav Valerievich LYCHAGOV ,  Dmitrii Igorevich CHERNAKOV ,  Kirill Gennadievich BELIAEV ,  Dmitriy Alexandrovich SHELESTOV

IPC: A61B5/00 ,  A61B5/026

Abstract: A live subject tissue detection device includes a light source configured to emit light onto the tissue of a subject, a photodetector configured to receive light reflected from the tissue and light reflected from the blood flow, wherein the light reflected from the blood flow has a Doppler shift relative to the light reflected from the tissue, and generate a high frequency Doppler signal based on the Doppler shift, a detection circuitry configured to receive the high frequency Doppler signal from the photodetector and convert the high frequency Doppler signal into a low frequency signal, and at least one processor configured to compute parameters of the low frequency signal, compare the parameters of the low frequency signal to respective reference values, and determine a presence of live tissue based on the comparison.

公开(公告)号：US20240341609A1

公开(公告)日：2024-10-17

申请号：US18753732

申请日：2024-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kirill Gennadievich BELIAEV ,  Dmitrii Igorevich CHERNAKOV ,  Viacheslav Sergeevich KHOLOBURDIN ,  Vladimir Mikhailovich SEMENOV

IPC: A61B5/024 ,  A61B5/00

CPC classification number: A61B5/02427 ,  A61B5/7214

Abstract: A method for measuring heart rate is provided. The method includes illuminating a body portion with light, detecting light scattered by tissues of the body portion and blood particles by a plurality of photodetectors including at least one pair of photodetectors which are connected in anti-parallel in each pair of photodetectors, eliminating a frequency component of motion artifacts in an analog photocurrent differential signal by subtracting a first analog photocurrent signal detected by a first photodetector of a pair of photodetectors of the at least one pair of the photodetectors from a second analog photocurrent signal detected by a second photodetector of the pair of photodetectors, converting the analog photocurrent differential signal into an analog voltage differential signal, converting the analog voltage differential signal into a digital differential signal, calculating an envelope of the digital differential signal, and calculating the heart rate from peaks of the calculated envelope of the digital differential signal.

公开(公告)号：US20240268720A1

公开(公告)日：2024-08-15

申请号：US18434212

申请日：2024-02-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vladislav Valerievich LYCHAGOV ,  Vladimir Mikhailovich SEMENOV ,  Elena Konstantinovna VOLKOVA ,  Dmitrii Igorevich CHERNAKOV

IPC: A61B5/1455 ,  A61B5/00 ,  G16H40/67 ,  G16H50/20

CPC classification number: A61B5/14551 ,  A61B5/681 ,  A61B5/7253 ,  G16H40/67 ,  G16H50/20

Abstract: A wearable device and a method for determining a hemoglobin concentration in a user's blood are provided. The method includes irradiating a tissue of a user with radiation of at least two different wavelengths, detecting photoplethysmographic (PPG) signals from the user's tissue in a time domain at the at least two different wavelengths in a reflection mode, transforming the detected PPG signals from the time domain to a frequency domain or a time-frequency domain, describing the transformed PPG signals with respect to harmonics to obtain a set of characteristics, and determining a hemoglobin concentration in the user's blood based on the obtained set of characteristics and an information from a database.

公开(公告)号：US20210356724A1

公开(公告)日：2021-11-18

申请号：US16953994

申请日：2020-11-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vladimir Mikhailovich SEMENOV ,  Artem Andreevich DOLGOBORODOV ,  Anastasiia Sergeevna SUVORINA ,  Gennady Dmitrievich MAMYKIN ,  Dmitrii Igorevich CHERNAKOV ,  Vladislav Valerievich LYCHAGOV

IPC: G02B17/08 ,  G02B27/30 ,  H01S5/02255 ,  G02B5/10 ,  H01S5/00 ,  G01N15/02 ,  G01J9/02

Abstract: The disclosure relates to multifunctional sensors for mobile applications, namely to a miniature optical sensor for remote micro- and macro-object detection and characterization. The disclosure makes it possible to reduce the size of the sensor, this provides for surface mount of the sensor in any microcircuit of a mobile device. The sensor is multifunctional, low-power, vibration-resistant. The sensor comprises at least one pair consisting of a radiation source and a corresponding radiation receiver, an optical circuit including a collimating element, a first optical element, a second optical element. The first optical element and the second optical element are interconnected by a common surface, the common surface being a semitransparent surface. The sensor may be used simultaneously as a microphone, a dust sensor, a lidar, and a photoplethysmogram (PPG) sensor.