Patents by Inventor Chang-mok Choi

Chang-mok 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: 20210030278
    Abstract: An apparatus for estimating bio-information includes a sensor part configured to measure a pulse wave signal and a contact force of an object, while the object is in contact with the sensor part. The apparatus further includes a processor configured to extract a first feature from the measured pulse wave signal and the measured contact force, select one estimation model from a plurality of estimation models, based on a second feature of a user corresponding to the object, and estimate the bio-information, by inputting the extracted first features in the selected estimation model.
    Type: Application
    Filed: March 12, 2020
    Publication date: February 4, 2021
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Industry-Univeristy Cooperation Foundation Hanyang Univeristy
    Inventors: Jin Woo CHOI, Joon-Hyuk JANG, Youn Ho KIM, Chang Mok CHOI, Tae-Jun PARK, Kwangsub SONG
  • Publication number: 20210022622
    Abstract: An electronic device according to an aspect of the present disclosure includes a touch screen. The electronic device includes a communication interface that may receive, from a touch pen, a pulse wave signal of a user which is measured from a finger of the user by the touch pen while the touch pen is placed on the touch screen. The electronic device includes a processor that may determine whether a measurement posture of the user is appropriate based on whether the finger touches the touch screen, and in response to determining that the user's measurement posture is appropriate, estimate bio-information of the user based on the received pulse wave signal.
    Type: Application
    Filed: March 9, 2020
    Publication date: January 28, 2021
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong Wook LEE, Byung Hoon KO, Young Soo KIM, Chang Mok CHOI, Jeong Eun HWANG, Youn Ho KIM
  • Publication number: 20200390346
    Abstract: An apparatus for estimating bio-information includes a pulse wave sensor configured to measure a pulse wave signal from an object, for a predetermined period of time, a processor configured to extract DC components of the pulse wave signal measured for the predetermined period of time, normalize the extracted DC components, based on at least one of the extracted DC components of the pulse wave signal measured at a time when a reference force is applied by the object to the pulse wave sensor, and estimate the bio-information, based on the normalized DC components.
    Type: Application
    Filed: March 10, 2020
    Publication date: December 17, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Mok Choi, Jeong Eun Hwang, Byung Hoon Ko, Jong Wook Lee, Youn Ho Kim
  • Publication number: 20200383641
    Abstract: An apparatus for measuring bio-information may include a pulse wave sensor having a circular contact surface that is convex toward a contact surface of an object of interest, and that may measure one or more pulse wave signals from the object of interest in contact with the circular contact surface. The apparatus may include a force sensor disposed below or on a side of the pulse wave sensor, and that may measure a contact force of the object of interest. The apparatus may include a processor that may estimate bio-information of the object of interest based on the one or more measured pulse wave signals and the measured contact force.
    Type: Application
    Filed: July 4, 2019
    Publication date: December 10, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Eun HWANG, Byung Hoon KO, Chang Mok CHOI, Sang Yun PARK
  • Patent number: 10779766
    Abstract: A wearable measurement apparatus capable of measuring a biometric signal is provided. The wearable measurement apparatus includes a main body, and a main-body elastic part disposed on a bottom surface of the main body, and configured to elastically support the main body against a body part of a user. The wearable measurement apparatus further includes a biometric signal sensor disposed apart from the main-body elastic part, and configured to detect a biometric signal from the body part, and a sensor elastic part interposed between the main body and the biometric signal sensor, and configured to form a step difference between a bottom surface of the biometric signal sensor and a bottom surface of the main-body elastic part, and elastically support the biometric signal sensor against the main body.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: September 22, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung Hoon Ko, Yong Joo Kwon, Youn Ho Kim, Sang Yun Park, Jin Hyun Yun, Jong Wook Lee, Chang Mok Choi
  • Publication number: 20200288995
    Abstract: An apparatus for measuring bio-information may include: a pulse wave sensor comprising at least one pair of light emitters which are disposed apart from each other and a light receiver disposed between the at least one pair of light emitters, and configured to measure a plurality of pulse wave signals from an object by using the light receiver and the at least one pair of light emitters; a force sensor configured to measure a contact force that is applied to the pulse wave sensor by the object; and a processor configured to generate an integrated pulse wave signal by integrating the plurality of pulse wave signals based on the contact force and an area of a contact surface of the pulse wave sensor, and estimate bio-information of the object based on the integrated pulse wave signal.
    Type: Application
    Filed: January 13, 2020
    Publication date: September 17, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Eun HWANG, Byung Hoon KO, Chang Mok CHOI, Sang Yun PARK, Jong Wook LEE
  • Publication number: 20200237222
    Abstract: A bio-signal measuring apparatus may include: a finger contact surface configured to be in contact with a finger of a user; an optical sensor configured to be disposed underneath the finger contact surface and sense a light when the light is reflected from the user; and a texture area formed on the finger contact surface at a boundary of the optical sensor, and configured to provide a texture different from a texture of a remaining area of the finger contact surface other than the texture area, so as to allow the user to feel a tactile sensation from the texture area when the finger is in contact with the finger contact surface.
    Type: Application
    Filed: September 27, 2019
    Publication date: July 30, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Mok Choi, Jeong Eun Hwang, Byung Hoon Ko, Jong Wook Lee, Youn Ho Kim
  • Publication number: 20200229743
    Abstract: An apparatus for estimating bio-information of an object of interest may include a processor configured to obtain a plurality of pulse wave signals of an object via a plurality of channels, determine a plurality of oxygen saturation values corresponding to the plurality of channels based on the plurality of pulse wave signals, select a channel to be used for estimating the bio-information of the object of interest from among the plurality of channels based on the plurality of oxygen saturation values, and estimate the bio-information of the object of interest based on a pulse wave signal corresponding to the selected channel.
    Type: Application
    Filed: January 21, 2020
    Publication date: July 23, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Mok Choi, Byung Hoon Ko, Jong Wook Lee, Youn Ho Kim
  • Publication number: 20200146568
    Abstract: A blood pressure measuring apparatus includes a pulse wave sensor configured to detect a pulse wave signal of an object, a pressure sensor configured to detect a contact pressure signal corresponding to a contact pressure between the object and the pulse wave sensor, and a processor configured to generate a pulse wave image based on the detected pulse wave signal of the object, generate a contact pressure image based on the detected contact pressure signal corresponding to the contact pressure between the object and the pressure sensor, and estimate a blood pressure of the object based on the generated pulse wave image, the generated contact pressure image, and a blood pressure estimation model.
    Type: Application
    Filed: November 7, 2019
    Publication date: May 14, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Yun PARK, Jin Woo CHOI, Jae Min KANG, Youn Ho KIM, Chang Mok CHOI
  • Patent number: 10649549
    Abstract: A device, a method, and a system recognize a motion using a gripped object. The motion recognition device may estimate a state of a wrist of a user according to a writing action using the gripped object and may estimate a joint motion of a body part related to the wrist according to the writing action. The device may then estimate a state of the gripped object according to the state of the wrist and the joint motion. Additionally, the motion recognition device may control an external device by using a control signal generated by continuously tracking the state of the object.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: May 12, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang Joon Kim, Seung Keun Yoon, Chang Mok Choi
  • Patent number: 10652724
    Abstract: A wearable device and a communication method using the wearable device may include recognizing a gesture of a user by sensing at least one of a motion and a biosignal that occur in or around a portion of the user to which the wearable device is attached. A wireless communication connection is established for the wearable device with at least one of an external device, an internal device, or another wearable device based on the recognized gesture. Wireless communication is performed with at least one of the external device and the internal device with which the wireless communication connection is established.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: May 12, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung Keun Yoon, Sang Joon Kim, Chang Mok Choi
  • Patent number: 10642359
    Abstract: A wearable biosignal interface, an apparatus for operating an external device, and an operation method of a wearable biosignal interface are provided. A wearable biosignal interface may include a motion sensor configured to obtain a first signal based on a motion of a target, a biosignal sensor disposed on the target and configured to obtain a second signal from the target, and a determination controller configured to determine a validity of the second signal based on the first signal.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: May 5, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Mok Choi, Sang Joon Kim, Seung Keun Yoon
  • Publication number: 20200121259
    Abstract: An apparatus for estimating bio-information based on pulse wave signals of multiple wavelengths is disclosed. The bio-information estimating apparatus may include: a sensor part comprising a pulse wave sensor configured to measure a multi-wavelength pulse wave signal at a first point in time when a first pressure is applied from an object to the sensor part and at a second point in time when a second pressure is applied from the object to the sensor part; and a processor configured to estimate bio-information based on a difference between the multi-wavelength pulse wave signal measured at the first pressure and the multi-wavelength pulse wave signal measured at the second pressure.
    Type: Application
    Filed: March 20, 2019
    Publication date: April 23, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eui Seok SHIN, Chang Mok Choi, Byung Hoon Ko, Jong Wook Lee
  • Publication number: 20200077901
    Abstract: An apparatus for measuring a bio-signal includes a pulse wave sensor that may measure a pulse wave signal, of an object of interest, that is non-equidistantly sampled based on a sampling rate of the pulse wave sensor, and a processor that may identify, using a sampling profile, a first interval based on a health index to be measured. The processor may identify, using the sampling profile, a second interval based on the health index to be measured. The processor may set the sampling rate of the pulse wave sensor to a first sampling rate in the first interval. The processor may set the sampling rate of the pulse wave sensor to a second sampling rate, that is less than the first sampling rate, in the second interval.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 12, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Wook Lee, Byung Hoon Ko, Chang Mok Choi
  • Publication number: 20200015690
    Abstract: An apparatus for obtaining bio-information may include a pulse wave sensor including a light source and a detector. The light source is configured to emit multi-wavelength light to an object of interest and the detector is configured to detect light reflected from the object. In addition, the apparatus may include a processor configured to obtain a change in volume of a blood vessel based on one or more of quantity of detected multi-wavelength light and absorbance coefficients of respective wavelengths of the multi-wavelength light and obtain bio-information based on the measured change in volume of the blood vessel.
    Type: Application
    Filed: January 22, 2019
    Publication date: January 16, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: CHANG MOK CHOI, BYUNG HOON KO, JONG WOOK LEE, YOUN HO KIM, YOUNG SOO KIM, JEONG EUN HWANG
  • Publication number: 20190357780
    Abstract: A bio-signal measurement apparatus may include a first substrate and a second substrate, an optical sensor mounted in the first substrate, a force sensor disposed on or below the first substrate, and a separation structure interposed between the first substrate and the second substrate so as to prevent transmission of a force between the first substrate and the second substrate. An upper surface of the first substrate and an upper surface of the second substrate may be provided at the same level.
    Type: Application
    Filed: May 24, 2019
    Publication date: November 28, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Byung Hoon KO, Yong Joo KWON, Young Soo KIM, Sang Yun PARK, Jong Wook LEE, Chang Mok CHOI, Jae Min KANG, Youn Ho KIM
  • Publication number: 20190244704
    Abstract: A dietary habit management apparatus and method are provided. The dietary habit management apparatus includes a bio-signal acquirer configured to acquire a bio-signal of a user, and a processor configured to obtain a total peripheral resistance (TPR) reflected index, from the bio-signal that is acquired by the bio-signal acquirer, and determine whether the user has eaten food, based on the TPR reflected index.
    Type: Application
    Filed: February 4, 2019
    Publication date: August 8, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn Ho Kim, Byung Hoon Ko, Yunseo Ku, Yong Joo Kwon, Ui Kun Kwon, Young Soo Kim, Jin Young Park, Jong Wook Lee, Dae Geun Jang, Chang Mok Choi, Jae Min Kang, Seung Woo Noh, Sang Yun Park, Chang Soon Park, Seung Keun Yoon
  • Publication number: 20190239060
    Abstract: A wearable device and a communication method using the wearable device may include recognizing a gesture of a user by sensing at least one of a motion and a biosignal that occur in or around a portion of the user to which the wearable device is attached. A wireless communication connection is established for the wearable device with at least one of an external device, an internal device, or another wearable device based on the recognized gesture. Wireless communication is performed with at least one of the external device and the internal device with which the wireless communication connection is established.
    Type: Application
    Filed: March 18, 2019
    Publication date: August 1, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Keun YOON, Sang Joon KIM, Chang Mok CHOI
  • Publication number: 20190216399
    Abstract: A bio-signal measuring apparatus includes: a substrate; a pulse wave measurer provided at the substrate and configured to measure pulse waves of a subject; and a pressure measurer provided at the substrate and configured to measure a contact pressure between the subject and the pulse wave measurer.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 18, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Mok CHOI, Byung Hoon KO, Young Soo KIM, Jong Wook LEE, Youn Ho KIM
  • Patent number: 10341480
    Abstract: A wearable device and corresponding method include producing, at a wearable device, an incoming call processing option list in response to a rejection input from a user rejecting an incoming call from a mobile terminal. The wearable device and corresponding method further transmit, from the wearable device to the mobile terminal, a result value corresponding to a gesture of the user and in response to the incoming call processing option list.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: July 2, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Mok Choi, Sang Joon Kim, Su-Hyun Na, Yu-Jin Na, Jong Kee Lee, Soon Kyu Jang, Young Ei Cho