Patents by Inventor Jong Kwan Choi

Jong Kwan 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).

  • Patent number: 12091597
    Abstract: Proposed are a method of manufacturing a quantum-dot film having encapsulated quantum dots dispersed therein, in which quantum dots are uniformly dispersed in a matrix resin to thus increase quantum yield and in which deterioration of the quantum dots can be prevented through encapsulation, a quantum-dot film manufactured thereby, and a wavelength conversion sheet and a display including the same.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: September 17, 2024
    Assignee: INNO QD CO., LTD
    Inventors: Jae Gyun Choi, Oh Kwan Kwon, Jong Uk Bu, Chul Park
  • Publication number: 20240289455
    Abstract: Disclosed herein is a method for detecting an anomaly state based on screen output. The method includes receiving the output screen of a target device to be monitored, setting a target region to be examined in the output screen of the target device to be monitored, calculating a feature value vector corresponding to the state of the target region to be examined, calculating an anomaly score using a pretrained auto-encoder by receiving the feature value vector as input, and determining whether the target device to be monitored is anomalous using the anomaly score.
    Type: Application
    Filed: June 14, 2023
    Publication date: August 29, 2024
    Inventors: Hyung-Kwan KIM, Jong-Won CHOI, Seung-Oh CHOI, Jeong-Han YUN, Won-Seok HWANG, Woo-Myo LEE, Byung-Gil MIN, Hyeok-Ki SHIN
  • Patent number: 11672438
    Abstract: According to one aspect of the invention, there is provided a method for monitoring hemodynamics, comprising the steps of: acquiring information on a posture of a first subject wearing a monitoring device; estimating a motion artifact predicted to be included in a spectroscopic measurement signal from the first subject which is measured by the monitoring device, with reference to the acquired information on the posture of the first subject, and a motion artifact estimation model for defining a correlation between a posture of at least one subject and a motion artifact occurring in a signal measured from the at least one subject; and removing the estimated motion artifact from the measurement signal from the first subject.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: June 13, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min Bae, Jong Kwan Choi, Min Gyu Choi, Gun Pil Hwang, Min Su Ji, Jae Myoung Kim
  • Publication number: 20230119563
    Abstract: There is provided a method of providing information about prognosis after cardiac arrest. The method includes the steps of: calculating biological information based on a signal relating to a hemoglobin concentration measured from a cerebral region of a subject to be measured; and providing the information about the prognosis after cardiac arrest of the subject with reference to the calculated biological information and a biomarker relating to the prognosis after cardiac arrest measured from a blood of the subject.
    Type: Application
    Filed: March 5, 2021
    Publication date: April 20, 2023
    Applicants: SEOUL NATIONAL UNIVERSITY HOSPITAL, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, OBE LAB., INC.
    Inventors: Sang Bae KO, Tae Jung KIM, Hyeon Min BAE, Jong Kwan CHOI, Jae Myoung KIM
  • Publication number: 20210321917
    Abstract: A method of monitoring a body tissue includes determining, with reference to a position of an m-th light emitting unit, a position of an n-th light reception unit, and a distance between the m-th light emitting unit and the n-th light reception unit, an area and a depth of the body tissue which corresponds to the m-th light emitting unit and the n-th light reception unit; measuring hemodynamics of the body tissue at the area and the depth corresponding to the m-th light emitting unit and the n-th light reception unit based on the optical signal generated from the m-th light emitting unit and detected by the n-th light reception unit; and estimating an activity of the body tissue on an area basis and a depth basis based on the hemodynamics at at least one of the area and the depth of the body tissue.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 21, 2021
    Applicant: OBE LAB., INC.
    Inventors: Jong Kwan CHOI, Il Taek HAN, Ji Seon LEE
  • Patent number: 11071457
    Abstract: Disclosed are an apparatus and a method for removing strands of hair from a near-infrared spectroscopy. The apparatus for removing strands of hair from a near-infrared spectroscopy may comprise: an arch-shaped main body worn on the head of a user, having a plurality of protrusions formed at an inner side part of the arch-shaped main body, and configured to expose a portion of scalp by arranging the strands of hair; a probe configured to come into close contact with the scalp; and a sensor configured to be accommodated inside the probe and receive light.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: July 27, 2021
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Hyeon Min Bae, Jae Myoung Kim, Jong Kwan Choi, Min Gyu Choi, Gun Pil Hwang
  • Patent number: 11006900
    Abstract: The present disclosure relates to a method and a system for standardizing a hemodynamics measurement result and a non-transitory computer-readable recording medium. According to one aspect of the present disclosure, provided is a method for standardizing a measurement result obtained from a device for monitoring hemodynamics, the method comprising the steps of: capturing an image of a subject wearing a monitoring device; defining a photogrammetric coordinate system on the captured image, and converting a preset local coordinate system on the monitoring device into the photogrammetric coordinate system; and converting the photogrammetric coordinate system into a standard coordinate system which is based on a standard space.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: May 18, 2021
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min Bae, Gun Pil Hwang, Min Gyu Choi, Jong Kwan Choi, Jae Myoung Kim, Min Su Ji
  • Patent number: 10799164
    Abstract: Disclosed are a mobile and expandable firmware-based optical spectroscopy system and a method for controlling same. The optical spectroscopy system may comprise: a wearing part attached to a particular region of a subject to irradiate light, on the basis of a firmware, to the particular region and measure the bodily signals of the subject by collecting emergent light which has passed through the particular region; and a monitoring unit, connected to the wearing part via a wired or wireless network, for controlling the strength of the light irradiated from the wearing part.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: October 13, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min Bae, Jae Myoung Kim, Jong Kwan Choi, Min Gyu Choi, Gun Pil Hwang
  • Patent number: 10667756
    Abstract: Disclosed are an optical spectroscopy system using a matched filter-based broadband signal receiver for stable data extraction, and a method for controlling the optical spectroscopy system. The optical spectroscopy system may comprise: a light transmission unit for irradiating light on a particular region of a subject by means of a plurality of light sources, wherein the light irradiated from the plurality of light sources is code-modulated by means of the Walsh codes and then irradiated; and a light receiving unit for detecting emergent light which has passed through the particular region, wherein the light source is identified by demodulating the light by means of the Walsh codes.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: June 2, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min Bae, Jong Kwan Choi, Min Gyu Choi, Jae Myoung Kim, Gun Pil Hwang
  • Publication number: 20200037881
    Abstract: According to one aspect of the invention, there is provided a method for controlling a monitoring device including a plurality of light emission units (or sources) and a plurality of light reception units (or detectors), comprising the steps of: causing the plurality of light emission units to sequentially generate optical signals in a mutually exclusive manner according to a time division scheme; and with reference to a distance between an m-th light emission unit of the plurality of light emission units that generates an optical signal to be measured and an n-th light reception unit of the plurality of light reception units that detects the optical signal to be measured, dynamically controlling a measurement circuit gain that the n-th light reception unit uses to detect the optical signal generated by the m-th light emission unit.
    Type: Application
    Filed: October 15, 2019
    Publication date: February 6, 2020
    Applicant: OBE LAB., INC.
    Inventors: Jong Kwan CHOI, Il Taek HAN, Dae Leem KWON
  • Publication number: 20190216341
    Abstract: According to one aspect of the invention, there is provided a method for monitoring hemodynamics, comprising the steps of: acquiring information on a posture of a first subject wearing a monitoring device; estimating a motion artifact predicted to be included in a spectroscopic measurement signal from the first subject which is measured by the monitoring device, with reference to the acquired information on the posture of the first subject, and a motion artifact estimation model for defining a correlation between a posture of at least one subject and a motion artifact occurring in a signal measured from the at least one subject; and removing the estimated motion artifact from the measurement signal from the first subject.
    Type: Application
    Filed: July 5, 2017
    Publication date: July 18, 2019
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min BAE, Jong Kwan CHOI, Min Gyu CHOI, Gun Pil HWANG, Min Su JI, Jae Myoung KIM
  • Publication number: 20190192081
    Abstract: The present disclosure relates to a method and a system for standardizing a hemodynamics measurement result and a non-transitory computer-readable recording medium. According to one aspect of the present disclosure, provided is a method for standardizing a measurement result obtained from a device for monitoring hemodynamics, the method comprising the steps of: capturing an image of a subject wearing a monitoring device; defining a photogrammetric coordinate system on the captured image, and converting a preset local coordinate system on the monitoring device into the photogrammetric coordinate system; and converting the photogrammetric coordinate system into a standard coordinate system which is based on a standard space.
    Type: Application
    Filed: July 5, 2017
    Publication date: June 27, 2019
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min BAE, Gun Pil HWANG, Min Gyu CHOI, Jong Kwan CHOI, Jae Myoung KIM, Min Su JI
  • Patent number: 10254165
    Abstract: Disclosed are a time division spread spectrum code-based optical spectroscopy system capable of controlling irradiation power and a method for controlling the optical spectroscopy system. The optical spectroscopy system may comprise: a light transmission unit for irradiating light to a particular region of a subject by means of a light source, wherein the light is irradiated so that the overall energy is consistently maintained by reducing the light irradiation time and increasing the strength of the light; and a light receiving unit for collecting emergent light which has passed through the particular region.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: April 9, 2019
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min Bae, Jong Kwan Choi, Min Gyu Choi, Jae Myoung Kim, Gun Pil Hwang
  • Patent number: 10039498
    Abstract: Disclosed are an optical spectroscopy system using a pipeline-structured matched filter and a dual-slope analog digital converter, and a method for controlling the optical spectroscopy system. The optical spectroscopy system may comprise: a pipeline-structured matched filter sequentially connecting input voltage, transmitted by means of an amplifier, to a first capacitor and a second capacitor by means of a first switch terminal; and a dual-slope analog digital converter for sequentially receiving, by means of a second switch terminal, the electric charge stored in the first capacitor and second capacitor, and digitizing the input voltage.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: August 7, 2018
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyeon Min Bae, Jong Kwan Choi, Min Gyu Choi, Jae Myoung Kim, Gun Pil Hwang
  • Publication number: 20170325747
    Abstract: Disclosed are an optical spectroscopy system using a pipeline-structured matched filter and a dual-slope analog digital converter, and a method for controlling the optical spectroscopy system. The optical spectroscopy system may comprise: a pipeline-structured matched filter sequentially connecting input voltage, transmitted by means of an amplifier, to a first capacitor and a second capacitor by means of a first switch terminal; and a dual-slope analog digital converter for sequentially receiving, by means of a second switch terminal, the electric charge stored in the first capacitor and second capacitor, and digitizing the input voltage.
    Type: Application
    Filed: November 14, 2014
    Publication date: November 16, 2017
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hyeon Min BAE, Jong Kwan CHOI, Min Gyu CHOI, Jae Myoung KIM, Gun Pil HWANG
  • Publication number: 20170322083
    Abstract: Disclosed are a time division spread spectrum code-based optical spectroscopy system capable of controlling irradiation power and a method for controlling the optical spectroscopy system. The optical spectroscopy system may comprise: a light transmission unit for irradiating light to a particular region of a subject by means of a light source, wherein the light is irradiated so that the overall energy is consistently maintained by reducing the light irradiation time and increasing the strength of the light; and a light receiving unit for collecting emergent light which has passed through the particular region.
    Type: Application
    Filed: November 14, 2014
    Publication date: November 9, 2017
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hyeon Min BAE, Jong Kwan CHOI, Min Gyu CHOI, Jae Myoung KIM, Gun Pil HWANG
  • Publication number: 20170319072
    Abstract: Disclosed are an apparatus and a method for removing strands of hair from a near-infrared spectroscopy. The apparatus for removing strands of hair from a near-infrared spectroscopy may comprise: an arch-shaped main body worn on the head of a user, having a plurality of protrusions formed at an inner side part of the arch-shaped main body, and configured to expose a portion of scalp by arranging the strands of hair; a probe configured to come into close contact with the scalp; and a sensor configured to be accommodated inside the probe and receive light.
    Type: Application
    Filed: November 14, 2014
    Publication date: November 9, 2017
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hyeon Min BAE, Jae Myoung KIM, Jong Kwan CHOI, Min Gyu CHOI, Gun Pil HWANG
  • Publication number: 20170311857
    Abstract: Disclosed are a mobile and expandable firmware-based optical spectroscopy system and a method for controlling same. The optical spectroscopy system may comprise: a wearing part attached to a particular region of a subject to irradiate light, on the basis of a firmware, to the particular region and measure the bodily signals of the subject by collecting emergent light which has passed through the particular region; and a monitoring unit, connected to the wearing part via a wired or wireless network, for controlling the strength of the light irradiated from the wearing part.
    Type: Application
    Filed: November 14, 2014
    Publication date: November 2, 2017
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hyeon Min BAE, Jae Myoung KIM, Jong Kwan CHOI, Min Gyu CHOI, Gun Pil HWANG
  • Publication number: 20170311898
    Abstract: Disclosed are an optical spectroscopy system using a matched filter-based broadband signal receiver for stable data extraction, and a method for controlling the optical spectroscopy system. The optical spectroscopy system may comprise: a light transmission unit for irradiating light on a particular region of a subject by means of a plurality of light sources, wherein the light irradiated from the plurality of light sources is code-modulated by means of the Walsh codes and then irradiated; and a light receiving unit for detecting emergent light which has passed through the particular region, wherein the light source is identified by demodulating the light by means of the Walsh codes.
    Type: Application
    Filed: November 14, 2014
    Publication date: November 2, 2017
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hyeon Min BAE, Jong Kwan CHOI, Min Gyu CHOI, Jae Myoung KIM, Gun Pil HWANG
  • Patent number: 9204325
    Abstract: Methods, systems, and computer readable media for reducing the impact of false downlink control information (DCI) detection in long term evolution (LTE) physical downlink control channel (PDCCH) data are disclosed. According to one method, an LTE multi-UE simulator receives PDCCH data from an evolved node B (eNode B). The LTE multi-UE simulator applies blind DCI decoding to decode at least one DCI value from channel control elements that carry the PDCCH data. The LTE multi-UE simulator applies at least one false DCI detection countermeasure to identify as true or false DCIs from the DCIs detected using the blind decoding.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: December 1, 2015
    Assignee: Ixia
    Inventors: Suresh Subramanian, Jong Kwan Choi, Ram Asokan