Patents by Inventor KA RAM CHOI

KA RAM CHOI 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).

  • Publication number: 20220104776
    Abstract: A method of optimizing a bio-information estimation model by reflecting temperature variation characteristics for each wavelength is disclosed. According to an embodiment of the present disclosure, the method of optimizing a bio-information estimation model includes: obtaining a plurality of spectra according to a temperature variation; obtaining a rate of change in absorbance at each wavelength of the plurality of spectra according to the temperature variation by subtracting a reference spectrum from the plurality of spectra; generating a characteristic matrix for each wavelength based on the rate of change in absorbance at each wavelength according to the temperature variation; obtaining a temperature signal spectrum based on the characteristic matrix for each wavelength; and optimizing a bio-information estimation model based on the temperature signal spectrum.
    Type: Application
    Filed: April 7, 2021
    Publication date: April 7, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram CHOI, So Young Lee, Jun Ho Lee, Sang Kyu Kim
  • Patent number: 11291374
    Abstract: Provided is an apparatus for estimating bio-information which estimates bio-information from a user. The apparatus for estimating bio-information according to an embodiment of the present disclosure includes: a spectrometer configured to obtain, absorbance from a user; a physiological information obtainer configured to obtain metabolic and physiological information including a concentration of carbon dioxide (CO2); and a processor configured to estimate bio-information based on the absorbance and the metabolic, and physiological information by using a predictive model corresponding to the obtained metabolic and physiological information.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: April 5, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: So Young Lee, Ka Ram Choi
  • Publication number: 20220061755
    Abstract: A healthcare apparatus according to an embodiment includes: a plurality of light sources configured to emit light of different wavelengths onto an object; a light detector configured to measure an optical signal of each of the wavelengths by receiving light reflected or scattered from the object; and a processor configured to obtain a blood glucose level and a blood flow index by using the optical signal of each of the wavelengths, and to estimate at least one from among dietary information and dietary metabolism state information by monitoring a blood glucose level change and a blood flow index change after ingestion of a food.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 3, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram CHOI, Hyo Sun HWANG, Jin Young PARK, Jae Wook SHIM, So Young LEE, Sang Kon BAE, Eui Seok SHIN
  • Publication number: 20220054050
    Abstract: An apparatus for obtaining a target signal spectrum includes: a spectrum measurer configured to measure a plurality of spectra from an object; and a processor configured to obtain a difference spectrum matrix by subtracting a reference spectrum from each of the plurality of spectra, and to obtain a spectrum of a target signal based on the obtained difference spectrum matrix.
    Type: Application
    Filed: December 11, 2020
    Publication date: February 24, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram CHOI, So Young LEE, Jun Ho LEE, Sang Kyu KIM, Hyeong Seok JANG
  • Patent number: 11197635
    Abstract: A healthcare apparatus according to an embodiment includes: a plurality of light sources configured to emit light of different wavelengths onto an object; a light detector configured to measure an optical signal of each of the wavelengths by receiving light reflected or scattered from the object; and a processor configured to obtain a blood glucose level and a blood flow index by using the optical signal of each of the wavelengths, and to estimate at least one from among dietary information and dietary metabolism state information by monitoring a blood glucose level change and a blood flow index change after ingestion of a food.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: December 14, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram Choi, Hyo Sun Hwang, Jin Young Park, Jae Wook Shim, So Young Lee, Sang Kon Bae, Eui Seok Shin
  • Patent number: 11147521
    Abstract: An apparatus for health care which guides a user to measure a target component. According to one embodiment, the apparatus for health care may include a physiological information acquirer configured to acquire physiological information related to a target component and a processor configured to monitor a measurement event of the target component based on the acquired physiological information and guide a user to measure the target component based on a monitoring result.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: October 19, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram Choi, Sang Kon Bae, So Young Lee
  • Publication number: 20210302310
    Abstract: A method of transforming Monte Carlo (MC) simulations for diffuse reflectance spectroscopy (DRS) may include obtaining, by a DRS device, MC simulated DRS measurements using a pre-defined number of photons; pre-processing, by the DRS device, the MC simulated DRS measurements to obtain normalized DRS measurements; correcting, by the DRS device, non-monotonicity of the normalized DRS measurements to obtain monotonic DRS measurements; converting, by the DRS device, the monotonic DRS measurements to a logarithmic domain to obtain logarithmic DRS measurements; performing, by the DRS device, curve fitting on the logarithmic DRS measurements in the logarithmic domain to obtain curve-fitted logarithmic DRS measurements; and transforming, by the DRS device, the curve-fitted logarithmic DRS measurements to a non-logarithmic domain to obtain transformed MC simulated DRS measurements.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 30, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sreejith KALLUMMIL, Sujit JOS, Ibrahim A., Ka Ram CHOI, Sang Kyu KIM
  • Patent number: 11058358
    Abstract: An apparatus for providing corrected bio-information by using a bio-information sensor includes a communicator configured to receive bio-information from the bio-information sensor; a processor configured to extract metabolic information based on food intake information of a user and correct the received bio-information based on the extracted metabolic information; and an outputter configured to provide a result of correcting the bio-information.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: July 13, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: So Young Lee, Jin Young Park, Ka Ram Choi, Sang Kon Bae
  • Publication number: 20210128073
    Abstract: Provided is an apparatus for non-invasively monitoring a health condition. The apparatus for monitoring health according to an example embodiment of the disclosure includes: a pulse wave sensor configured to obtain a first pulse wave signal in a first contact state of an object and a second pulse wave signal in a second contact state of the object; and a processor configured to estimate a degree of vasodilation based on an alternating current (AC) component of each of the first pulse wave signal and the second pulse wave signal, configured to monitor a vascular health condition based on the estimated degree of vasodilation, and configured to output a result of monitoring the vascular health condition.
    Type: Application
    Filed: April 20, 2020
    Publication date: May 6, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: SO YOUNG LEE, Jeong Eun HWANG, Ka Ram CHOI
  • Publication number: 20200367815
    Abstract: An apparatus for generating a metabolism model may include a processor configured to obtain a predetermined number of bio-information profiles from a bio-sensor, extract a representative bio-information profile from the obtained predetermined number of bio-information profiles, and generate the metabolism model for correcting an error of the bio-sensor by using the extracted representative bio-information profile.
    Type: Application
    Filed: February 10, 2020
    Publication date: November 26, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Kyu KIM, So Young LEE, Ka Ram CHOI
  • Publication number: 20200345281
    Abstract: A personalized bio-information correcting apparatus includes a communication interface configured to acquire original bio-information value data of a user, and a processor configured to obtain a personalized bio-information guideline, based on a personalized physiological model, identify whether at least one value among the acquired original bio-information value data is an outlier, based on the obtained personalized bio-information guideline, and based on the at least one value among the acquired original bio-information value data being identified to be the outlier, obtain final bio-information value data by correcting the at least one value among the acquired original bio-information value data.
    Type: Application
    Filed: January 10, 2020
    Publication date: November 5, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram CHOI, So Young LEE
  • Publication number: 20200323493
    Abstract: The present disclosure relates to a method and system for processing a photoplethysmogram (PPG) signal to improve accuracy of measurement of physiological parameters of a subject. The method may include removing a baseline drift from the PPG signal; obtaining a drift removed signal; filtering the drift removed signal; obtaining a filtered signal; performing motion artifact correction on the filtered signal; and obtaining a corrected signal.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 15, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Rahul ARORA, Sujit JOS, Ibrahim ABDUL MAJEED, Ka Ram CHOI, Sang Kon BAE
  • Publication number: 20200323437
    Abstract: Provided is an apparatus for estimating bio-information which estimates bio-information from a user. The apparatus for estimating bio-information according to an embodiment of the present disclosure includes: a spectrometer configured to obtain, absorbance from a user; a physiological information obtainer configured to obtain metabolic and physiological information including a concentration of carbon dioxide (CO2); and a processor configured to estimate bio-information based on the absorbance and the metabolic, and physiological information by using a predictive model corresponding to the obtained metabolic and physiological information.
    Type: Application
    Filed: December 9, 2019
    Publication date: October 15, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: So Young LEE, Ka Ram Choi
  • Publication number: 20200312460
    Abstract: Provided is a healthcare apparatus including a pulse wave sensor including a light source configured to emit light toward a user and a detector configured to detect light reflected or scattered from the user, the pulse wave sensor being configured to measure a pulse wave signal based on the detected light, and a processor configured to obtain an optical path length change of blood of the user based on the pulse wave signal, and to predict whether the user has a health problem based on the obtained optical path length change.
    Type: Application
    Filed: December 11, 2019
    Publication date: October 1, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: So Young LEE, Ka Ram CHOI
  • Publication number: 20200245880
    Abstract: A heartbeat index determination apparatus may include a pulse wave acquirer configured to acquire a plurality of pulse wave signals that are measured using light of different wavelengths; and a processor configured to measure wavelength-specific heartbeat index values from the plurality of pulse wave signals and determine that a wavelength-specific heartbeat index value that is obtained from the plurality of pulse wave signals a most number of times among the wavelength-specific heartbeat index values is a heartbeat index value of a user.
    Type: Application
    Filed: January 13, 2020
    Publication date: August 6, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram CHOI, Seung Keun YOON, Sang Kyu KIM
  • Publication number: 20200237312
    Abstract: A method and apparatus for pre-processing a photoplethysmogram (PPG) signal include receiving, by an apparatus, the PPG signal including a plurality of pulses, obtaining, by the apparatus, a smoothed PPG signal based on smoothing the PPG signal using a moving average filter, obtaining, by the apparatus, a drift removed PPG signal based on removing drift from the smoothed PPG signal using a fitted polynomial function, and obtaining, by the apparatus, a rectified PPG signal based on correcting a motion artifact of the drift removed PPG signal by replacing each of the plurality of pulses using a combination of a global signal pulse and a corresponding local signal pulse.
    Type: Application
    Filed: January 22, 2020
    Publication date: July 30, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ibrahim ABDUL MAJEED, Sujit JOS, Rahul ARORA, Ka Ram CHOI, Sang Kon BAE
  • Publication number: 20200187835
    Abstract: An apparatus for estimating blood glucose using a photoplethysmography (PPG) signal is provided. The apparatus for estimating blood glucose includes: a pulse wave sensor configured to obtain a pulse wave signal from an object; and a processor configured to obtain at least two points from a waveform of the pulse wave signal, to extract a feature based on time values of the obtained at least two points, and to estimate blood glucose based on the extracted feature.
    Type: Application
    Filed: July 9, 2019
    Publication date: June 18, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram CHOI, Sang Kon BAE, So Young LEE, Seung Keun YOON
  • Publication number: 20200077961
    Abstract: An apparatus for health care which guides a user to measure a target component. According to one embodiment, the apparatus for health care may include a physiological information acquirer configured to acquire physiological information related to a target component and a processor configured to monitor a measurement event of the target component based on the acquired physiological information and guide a user to measure the target component based on a monitoring result.
    Type: Application
    Filed: May 17, 2019
    Publication date: March 12, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ka Ram CHOI, Sang Kon BAE, So Young LEE
  • Publication number: 20190167190
    Abstract: A healthcare apparatus according to an embodiment includes: a plurality of light sources configured to emit light of different wavelengths onto an object; a light detector configured to measure an optical signal of each of the wavelengths by receiving light reflected or scattered from the object; and a processor configured to obtain a blood glucose level and a blood flow index by using the optical signal of each of the wavelengths, and to estimate at least one from among dietary information and dietary metabolism state information by monitoring a blood glucose level change and a blood flow index change after ingestion of a food.
    Type: Application
    Filed: November 27, 2018
    Publication date: June 6, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: KA RAM CHOI, HYO SUN HWANG, JIN YOUNG PARK, JAE WOOK SHIM, SO YOUNG LEE, SANG KON BAE, EUI SEOK SHIN
  • Publication number: 20190110751
    Abstract: An apparatus for providing corrected bio-information by using a bio-information sensor includes a communicator configured to receive bio-information from the bio-information sensor; a processor configured to extract metabolic information based on food intake information of a user and correct the received bio-information based on the extracted metabolic information; and an outputter configured to provide a result of correcting the bio-information.
    Type: Application
    Filed: June 7, 2018
    Publication date: April 18, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: SO YOUNG LEE, JIN YOUNG PARK, KA RAM CHOI, SANG KON BAE