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公开(公告)号：US12059273B2
公开(公告)日：2024-08-13
申请号：US16843104
申请日：2020-04-08
发明人： Ui Kun Kwon , Chang Soon Park , Seung Keun Yoon , Dae Geun Jang
CPC分类号： A61B5/7278 , A61B5/02007 , A61B5/02116 , A61B5/02125 , A61B5/024 , A61B5/165 , A61B5/681 , A61B5/6898
摘要： 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.
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公开(公告)号：US12053306B2
公开(公告)日：2024-08-06
申请号：US16415134
申请日：2019-05-17
发明人： Chang Soon Park , Ui Kun Kwon , Youn Ho Kim , Seung Keun Yoon , Dae Geun Jang
CPC分类号： A61B5/7278 , A61B5/021 , A61B5/02116 , A61B5/02125 , A61B5/029 , A61B5/024
摘要： 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.
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公开(公告)号：US11898882B2
公开(公告)日：2024-02-13
申请号：US17984880
申请日：2022-11-10
发明人： Chang Soon Park , Ui Kun Kwon , Seung Keun Yoon , Dae Geun Jang
CPC分类号： G01D18/00 , A61B5/021 , A61B2560/0223
摘要： 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.
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公开(公告)号：US11813039B2
公开(公告)日：2023-11-14
申请号：US16593612
申请日：2019-10-04
发明人： Chang Soon Park , Ui Kun Kwon , Seung Keun Yoon
IPC分类号： A61B5/00 , A61B5/0215 , A61B5/02
CPC分类号： A61B5/0059 , A61B5/02156 , A61B5/7225 , A61B5/7275 , A61B5/02007 , A61B5/681 , A61B2560/0223
摘要： An apparatus for estimating bio-information includes a sensor configured to measure a bio-signal from an object, and a processor configured to obtain a feature based on the measured bio-signal, obtain a bio-information variation based on the obtained feature, obtain an adjustment coefficient based on the obtained bio-information variation, and estimate the bio-information by applying the obtained adjustment coefficient to the obtained bio-information variation.
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公开(公告)号：US20230301526A1
公开(公告)日：2023-09-28
申请号：US18328257
申请日：2023-06-02
发明人： Ui Kun Kwon , Chang Soon Park , Dae Geun Jang
CPC分类号： A61B5/02116 , A61B5/021 , A61B5/02125 , A61B5/681 , A61B5/7275 , A61B5/746 , A61B2560/0228
摘要： 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.
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公开(公告)号：US11284843B2
公开(公告)日：2022-03-29
申请号：US16273293
申请日：2019-02-12
发明人： Chang Soon Park , Ui Kun Kwon , Yunseo Ku , Seung Woo Noh , Seung Keun Yoon , Dae Geun Jang
摘要： 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.
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公开(公告)号：US11266357B2
公开(公告)日：2022-03-08
申请号：US15833727
申请日：2017-12-06
发明人： Ui Kun Kwon , Chang Soon Park , Dae Geun Jang , Young Soo Kim
摘要： A bio-signal feature scaling apparatus may include: a processor configured to execute instructions to: extract a feature from a bio-signal of an object; estimate a cause of change in a bio-state of the object; calibrate a scale factor based on the estimated cause of change in the bio-state; and scale the extracted feature by applying the calibrated scale factor to the extracted feature.
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公开(公告)号：US20220008020A1
公开(公告)日：2022-01-13
申请号：US17484552
申请日：2021-09-24
发明人： Chang Soon Park , Ui Kun Kwon , Dae Geun Jang , Young Soo Kim
IPC分类号： A61B5/00 , A61B5/021 , A61B5/029 , A61B5/11 , A61B5/026 , A61B5/02 , A61B5/0205 , A61B5/318 , A61B5/389
摘要： 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.
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公开(公告)号：US11018699B2
公开(公告)日：2021-05-25
申请号：US16884286
申请日：2020-05-27
发明人： Chang Soon Park , Youngsoo Kim , Jaewook Shim , Young Jun Hong , Hyosun Hwang
摘要： A method and an apparatus for controlling an interleaving depth are provided. The interleaving depth controlling method includes performing a modulo operation on an interleaving depth selected to be less than or equal to a maximum interleaving depth and a total number of codewords to obtain a number of remaining codewords; and comparing the total number of the codewords to the interleaving depth, when the number of the remaining codewords excludes “0”, to control the interleaving depth.
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公开(公告)号：US10751002B2
公开(公告)日：2020-08-25
申请号：US15212556
申请日：2016-07-18
发明人： Chang Soon Park , Ui Kun Kwon , Sang Joon Kim , Changmok Choi
IPC分类号： A61B5/00 , G01R29/26 , A61B5/048 , A61B5/0402 , A61B5/04 , A61B5/0488
摘要： A biosignal processing apparatus includes a communication interface configured to receive a biosignal, and a processor configured to set a target interval of the biosignal, calculate a quality metric corresponding to the target interval based on a target component that is a frequency component of the target interval corresponding to a set value and a non-target component that is a frequency component of the target interval not corresponding to the set value, and estimate a quality of the biosignal based on the quality metric.
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