Patents by Inventor Dae Geun Jang

Dae Geun Jang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11123022
    Abstract: A blood pressure estimating apparatus includes a sensor configured to obtain a bio-signal of an object; and a processor configured to extract a first cardiovascular feature and a second cardiovascular feature based on the bio-signal, and estimate blood pressure based on a first changing tendency of the first cardiovascular feature from a first reference level and a second changing tendency of the second cardiovascular feature from a second reference level, the first changing tendency and the second changing tendency being independent from each other.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: September 21, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ui Kun Kwon, Yunseo Ku, Seung Woo Noh, Chang Soon Park, Seung Keun Yoon, Dae Geun Jang
  • Publication number: 20210282648
    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.
    Type: Application
    Filed: September 3, 2020
    Publication date: September 16, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Ui Kun Kwon, Young Soo Kim, Seung Keun Yoon, Dae Geun Jang
  • Publication number: 20210235996
    Abstract: A signal processing apparatus includes a memory configured to store instructions; and a processor configured to execute the instructions to obtain a signal; obtain a frequency band spectrum by applying a Fast Fourier Transform (FFT) to the obtained signal; and remove noise from the obtained spectrum by applying a first filter and a second filter, which are different from each other, to the obtained frequency band spectrum.
    Type: Application
    Filed: June 18, 2020
    Publication date: August 5, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Mok Choi, Dae Geun Jang
  • Publication number: 20210228100
    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.
    Type: Application
    Filed: September 30, 2020
    Publication date: July 29, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Ui Kun KWON, Seung Keun YOON, Dae Geun JANG
  • Publication number: 20210177287
    Abstract: An apparatus for estimating bio-information may include: a processor configured to measure a current time interval between a plurality of element waveforms of the pulse wave signal, determine whether a current measurement posture of the user corresponds to a reference posture based on the current time interval of the plurality of element waveforms, and estimate the bio-information based on a determination of whether the current measurement posture corresponds to the reference posture.
    Type: Application
    Filed: May 28, 2020
    Publication date: June 17, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ui Kun KWON, Chang Soon PARK, Seung Keun YOON, Dae Geun JANG
  • Publication number: 20210169356
    Abstract: An apparatus for estimating bio-information includes a bio-signal obtainer configured to obtain a bio-signal from an object; and a processor configured to: obtain function values by applying a predetermined function to sections of the bio-signal, corresponding to respective windows of a predetermined size, while sliding a window on a time axis of the bio-signal, obtain an oscillometric waveform envelope based on the obtained function values, and estimate bio-information of the object based on the oscillometric waveform envelope.
    Type: Application
    Filed: May 21, 2020
    Publication date: June 10, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Geun JANG, Ui Kun Kwon
  • Patent number: 10980490
    Abstract: A method of evaluating a physiological aging level includes calculating a complexity corresponding to a change pattern of a physiological parameter sensed from a user, and determining an aging level indicating a physiological change progress of the user based on the complexity.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: April 20, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Geun Jang, Sang Joon Kim, JongPal Kim, Seungchul Jung
  • Publication number: 20210085259
    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.
    Type: Application
    Filed: April 8, 2020
    Publication date: March 25, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ui Kun Kwon, Chang Soon Park, Seung Keun Yoon, Dae Geun Jang
  • Publication number: 20210068762
    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.
    Type: Application
    Filed: May 15, 2020
    Publication date: March 11, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Seung Keun YOON, Dae Geun JANG
  • Publication number: 20210007615
    Abstract: Provided is an apparatus for non-invasively estimating bio-information by analyzing a pulse waveform. The apparatus for estimating bio-information according to an aspect of the present disclosure includes a processor configured to obtain a first characteristic point from a first pulse wave signal measured by a pulse wave sensor at a calibration time, obtain a second characteristic point from a second pulse wave signal measured by the pulse wave sensor at a bio-information estimation time, based on time information of the obtained first characteristic point, and estimate the bio-information of an object based on the obtained second characteristic point.
    Type: Application
    Filed: March 6, 2020
    Publication date: January 14, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Geun JANG, Ui Kun KWON, Chang Soon PARK
  • Publication number: 20200397309
    Abstract: An apparatus for calibrating a bio-information estimation model is provided. The apparatus may include a sensor configured to detect a bio-signal from an object of interest, and a processor configured to extract a first feature at each of a plurality of points of the bio-signal, extract a second feature at each of the plurality of points of the bio-signal, and determine a calibration point of the bio-information estimation model, from among the plurality of points of the bio-signal, based on a first degree of change in the first feature at each point relative to a first feature at a reference point and a second degree of change in the second feature at each point relative to a second feature at the reference point.
    Type: Application
    Filed: March 11, 2020
    Publication date: December 24, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Geun Jang, Ui Kun Kwon, Chang Soon Park, Seung Keun Yoon
  • Publication number: 20200221960
    Abstract: An apparatus for estimating blood pressure, includes a pulse wave sensor configured to measure a first pulse wave signal from a user, and a processor configured to differentiate or integrate the measured first pulse wave signal to obtain a reference signal, correct the measured first pulse wave signal, based on the obtained reference signal, to obtain a second pulse wave signal, and estimate the blood pressure, based on the obtained second pulse wave signal.
    Type: Application
    Filed: October 8, 2019
    Publication date: July 16, 2020
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Dae Geun Jang
  • Publication number: 20200221963
    Abstract: An apparatus for estimating bio-information, includes a pulse wave sensor configured to measure a pulse wave signal from a user, and a processor configured to obtain two or more parameters among a maximum point, an average point, and an onset point, from a waveform of the measured pulse wave signal, and combine the obtained two or more parameters to generate a pulse wave analysis result.
    Type: Application
    Filed: August 21, 2019
    Publication date: July 16, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Dae Geun JANG
  • Publication number: 20200196959
    Abstract: An apparatus for estimating blood pressure includes: a ballistocardiogram (BCG) sensor configured to measure a limb BCG signal from a user; and a processor configured to obtain blood pressure-related features from the measured limb BCG signal, according to sensing characteristics of the BCG sensor, and estimate a blood pressure of the user based on the obtained blood pressure-related features.
    Type: Application
    Filed: October 1, 2019
    Publication date: June 25, 2020
    Applicants: SAMSUNG ELECTRONICS CO., LTD., UNIVERSITY OF MARYLAND, COLLEGE PARK
    Inventors: Dae Geun Jang, Peyman Yousefian, Jin-Oh Hann, Ui Kun Kwon, Youn Ho Kim, Sungtae Shin
  • Publication number: 20200113527
    Abstract: An apparatus for estimating a blood pressure, includes a sensor configured to measure a bio-signal, and a processor configured to acquire a feature value from the bio-signal, and detect a blood pressure change sign, based on the feature value. The processor is further configured to acquire a scale factor, based on the blood pressure change sign, and estimate the blood pressure, based on the feature value and the scale factor.
    Type: Application
    Filed: June 27, 2019
    Publication date: April 16, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Ui Kun Kwon, Seung Keun Yoon, Dae Geun Jang
  • Publication number: 20200113526
    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.
    Type: Application
    Filed: May 17, 2019
    Publication date: April 16, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Ui Kun KWON, Youn Ho KIM, Seung Keun YOON, Dae Geun JANG
  • Publication number: 20200113453
    Abstract: A blood pressure estimating apparatus is provided. The blood pressure estimating apparatus may include: a sensor configured to measure a bio-signal waveform; and a processor configured to obtain a first feature based on a first area under the bio-signal waveform in a first time interval, obtain a second feature based on a second area under the bio-signal waveform in a second time interval which is different from the first time interval, and estimate blood pressure based on the first feature and the second feature.
    Type: Application
    Filed: April 3, 2019
    Publication date: April 16, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Ui Kun KWON, Seung Keun YOON, Dae Geun JANG
  • Patent number: 10600330
    Abstract: A method and an apparatus for assessing cardiopulmonary fitness of a user are provided. A method of assessing cardiopulmonary fitness involves measuring a biosignal of a user performing an activity, measuring an exercise intensity of the activity, determining a parameter based on the biosignal and the exercise intensity, estimating a cardiopulmonary fitness index based on the parameter, and assessing the cardiopulmonary fitness of the user based on the cardiopulmonary fitness index.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: March 24, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Geun Jang, Byunghoon Ko, SangKon Bae
  • Publication number: 20200054223
    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.
    Type: Application
    Filed: March 20, 2019
    Publication date: February 20, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ui Kun KWON, Chang Soon Park, Dae Geun Jang
  • Publication number: 20200054290
    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.
    Type: Application
    Filed: May 16, 2019
    Publication date: February 20, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Geun JANG, Ui Kun KWON, Chang Soon PARK