Patents by Inventor Gil Choi

Gil 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: 12357238
    Abstract: The present invention relates to a method for estimating blood pressure from photoplethysmography (PPG) signals. The blood pressure estimation method using the CFR model according to an embodiment of the present invention is characterized in that it comprises the steps of extracting a plurality of blood flow characteristics from PPG signals for training, calculating systolic and diastolic blood pressures from ambulatory blood pressures for training, labeling the systolic and diastolic blood pressures with the plurality of blood flow characteristics to train a cascade forest regression model, and inputting the PPG signals of a target user into the trained cascade forest regression model to determine the systolic and diastolic blood pressures of the target user.
    Type: Grant
    Filed: November 17, 2023
    Date of Patent: July 15, 2025
    Assignee: Industry-Academic Cooperation Foundation, Chosun University
    Inventors: Jae Hyo Jung, Geng Jia Zhang, Dae Gil Choi
  • Publication number: 20250226243
    Abstract: A method for manufacturing a display device includes preparing a display device including a display panel including a first alignment mark and a first circuit board including a second alignment mark and on one end of the display panel, disposing the display device on a stage including a base mark, setting the base mark as a reference mark in consideration of a relative position relation between the first alignment mark and the base mark by sensing the first alignment mark and the base mark, and determining a bending state of the display device by sensing the base mark and the second alignment mark and identifying a position relation between the base mark and the second alignment mark.
    Type: Application
    Filed: March 25, 2025
    Publication date: July 10, 2025
    Inventors: Dong Woo KIM, Jong Hoon PARK, Myung Gil CHOI
  • Patent number: 12353072
    Abstract: An apparatus for manufacturing a display device includes a plurality of working tables, a plurality of arm modules, and a rotator. The plurality of working tables are spaced apart from each other in a first direction and are configured to support a target board. The plurality of arm modules are arranged in the first direction and spaced apart from the plurality of working tables in a second direction intersecting the first direction. The rotator is connected to the plurality of arm modules and configured to rotate about a rotation axis extending in the first direction.
    Type: Grant
    Filed: January 12, 2024
    Date of Patent: July 8, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myung Gil Choi, Jung Min Lee, Dong Woo Kim, Sang Moo Lee
  • Publication number: 20250196649
    Abstract: Provided relates to a contact force adjustment apparatus for a contact bar, which includes a height adjustment unit that varies a height of a dog detected by a photosensor, a tension checking unit capable of easily checking a change in tension for a spring, and a contact force adjustment unit including a dog protruding upward a support bar to rotate the support bar; a nut disposed on an upper surface of the support bar, and configured to support the dog when the dog rotates; a wedge member inserted into an insertion hole while being screw-fastened to an outer surface of the support bar, and having an upper portion with a diameter that is gradually increased upward along the height direction so that the wedge member is seated in the installation hole; and a height adjustment unit for adjusting a height of the dog.
    Type: Application
    Filed: February 26, 2024
    Publication date: June 19, 2025
    Inventor: Yong Gil CHOI
  • Publication number: 20250143592
    Abstract: The present disclosure relates to a method of extracting spatiotemporal features of electrocardiogram (ECG) and photoplethysmography (PPG) signals corresponding to each other using a neural network and of estimating blood pressure on the basis of the spatiotemporal features. The method includes: generating a target signal of a plurality of channels by respectively combining ECG signals and PPG signals corresponding to each other; extracting a first feature composed of a plurality of channels by inputting the target signal of a plurality of channels into a 1D convolution layer; generating a channel-wise weight vector by compressing the first feature; computing a second feature composed of a plurality of channels by applying the channel-wise weight vector to the first feature; extracting a third feature by inputting the second feature into a CNN model; and determining systolic and diastolic blood pressures by inputting the third feature into an LSTM model.
    Type: Application
    Filed: July 8, 2024
    Publication date: May 8, 2025
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, CHOSUN UNIVERSITY
    Inventors: Jae Hyo JUNG, Geng Jia ZHANG, Dae Gil CHOI
  • Publication number: 20250084776
    Abstract: A device configured to detect a drop of oil pressure includes: a first gate configured to receive an acceleration measured by an acceleration sensor and to output a logical value indicating whether the acceleration falls within a range that is determined by a turning cam tracking diagnosis entry acceleration and a turning cam tracking diagnosis escape acceleration; a second gate configured to invert an output of the first gate; and a third gate configured select and output one of an output value of the second gate or a first value based on a first selection signal. The device is configured to perform a turning cam tracking diagnosis entry when the output value of the third gate is the first value, and the device is configured to not perform the turning cam tracking diagnosis entry when the output value of the third gate is a second value.
    Type: Application
    Filed: September 10, 2024
    Publication date: March 13, 2025
    Inventors: Kihyoung PARK, Jae Ik AHN, Jaekyoung JEONG, Jaekyun LEE, Hyang LEE, Seong Gil CHOI, Myung Rae CHO, Seongmin LEE
  • Publication number: 20250009309
    Abstract: The present invention relates to a method for estimating blood pressure from photoplethysmography (PPG) signals. The blood pressure estimation method using the CFR model according to an embodiment of the present invention is characterized in that it comprises the steps of extracting a plurality of blood flow characteristics from PPG signals for training, calculating systolic and diastolic blood pressures from ambulatory blood pressures for training, labeling the systolic and diastolic blood pressures with the plurality of blood flow characteristics to train a cascade forest regression model, and inputting the PPG signals of a target user into the trained cascade forest regression model to determine the systolic and diastolic blood pressures of the target user.
    Type: Application
    Filed: November 17, 2023
    Publication date: January 9, 2025
    Applicant: Industry-Academic Cooperation Foundation, Chosun University
    Inventors: Jae Hyo JUNG, Geng Jia ZHANG, Dae Gil CHOI
  • Patent number: 12166238
    Abstract: A secondary battery includes a Z stack electrode assembly including a separator bent in a Z shape and including a plurality of bent areas, a first electrode plate on a lower portion of each of the bent areas, and a second electrode plate on an upper portion of each of the bent areas, and an exterior portion configured to accommodate the Z stack electrode assembly, and an outermost end area of the separator is bent to be thermally fused to a bent area of the plurality of bent areas of the separator.
    Type: Grant
    Filed: June 15, 2022
    Date of Patent: December 10, 2024
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyu Gil Choi, Won Wook Cho
  • Publication number: 20240247222
    Abstract: The present invention relates to a microorganism culture production amount prediction system and method with improved accuracy in predicting the microorganism culture production amount using a metabolic model equation by calculating the predicted substrate concentration from the metabolic model equation, calculating the actually measure substrate concentration from the spectrum data of the culture solution, comparing the predicted substrate concentration with the actually measured substrate concentration, and updating the parameters of the metabolic model equation, in a method for predicting the culture concentration of microorganisms with known metabolic model equation governing the metabolic model.
    Type: Application
    Filed: August 26, 2022
    Publication date: July 25, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Jae Gil CHOI, You Bin KWON, Young Soo SONG, Ye Hoon IM, Jun Won CHOI
  • Patent number: 12036781
    Abstract: An apparatus configured to manufacture a display device and a method of manufacturing a display device include a stage configured to place a process target object on an upper surface thereof; a bending head in contact with the process target object to bend the process target object; a distance measurement sensor installed above the stage to be movable in a horizontal direction; and a cylinder configured to adjust a vertical position of the bending head.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: July 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myung Gil Choi, Jung Min Lee, Min Ha Yun, Sang Moo Lee
  • Publication number: 20240199340
    Abstract: Embodiments of the inventive concept provide an article transfer apparatus and an article transfer method which can temporarily load a container, and which can vary its size according to necessity, so an interference with surrounding structures do not occur while varying the size. The inventive concept provides an article transfer apparatus at which an OHT transfers a container.
    Type: Application
    Filed: December 5, 2023
    Publication date: June 20, 2024
    Applicant: SEMES CO., LTD.
    Inventors: Do-Hyun KIM, Jung Gil CHOI, Sung Ho LEE
  • Publication number: 20240155929
    Abstract: An apparatus for manufacturing a display device includes a plurality of working tables, a plurality of arm modules, and a rotator. The plurality of working tables are spaced apart from each other in a first direction and are configured to support a target board. The plurality of arm modules are arranged in the first direction and spaced apart from the plurality of working tables in a second direction intersecting the first direction. The rotator is connected to the plurality of arm modules and configured to rotate about a rotation axis extending in the first direction.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 9, 2024
    Inventors: Myung Gil CHOI, Jung Min LEE, Dong Woo KIM, Sang Moo LEE
  • Publication number: 20240154123
    Abstract: Disclosed are a binder composition for an all-solid-state secondary battery, including a copolymer including a conjugated diene-based monomer, an aromatic vinyl-based monomer, and an ethylenically unsaturated acid monomer, a trithiocarbonate-based compound, a mercaptan-based compound, and a solvent, wherein a weight average molecular weight (Mw) of the copolymer is 50,000 to 200,000, and a molecular weight distribution (Mw/Mn) is 1 to 5, a method of preparing the same, a slurry composition for a cathode or a solid electrolyte including the same, and a secondary battery manufactured therefrom.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 9, 2024
    Applicant: KOREA KUMHO PETROCHEMICAL CO., LTD.
    Inventors: Jeong Geun KIM, Jae Kon SUH, In Oh SONG, Young Gil CHOI
  • Patent number: 11976386
    Abstract: A method of preparing a carbon fiber including: preparing a precursor fiber for preparing a carbon fiber; and stabilizing the precursor fiber. The stabilization of the precursor fiber includes a first stabilization phase, a second stabilization phase, a third stabilization phase, and a fourth stabilization phase, which are set at four different temperatures between a temperature at which heat starts to be generated from the stabilization reaction of the precursor fiber and a temperature at which the generation of heat is maximized. Ozone gas is input while at least one phase of the third stabilization phase and the fourth stabilization phase is carried out.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: May 7, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jae Gil Choi, Ji Hye Shin, Joon Hee Cho, Su Jin Kim, Ki Hwan Kim, Il Ha Lee, Myung Su Jang
  • Publication number: 20240141148
    Abstract: Disclosed are a binder for a secondary battery anode including styrene-butadiene-based rubber with a core-shell structure and nitrile-butadiene-based rubber with a gel content of 15% or more, wherein a weight ratio of the styrene-butadiene-based rubber and the nitrile-butadiene-based rubber is 65:35 to 99:1, an anode mixture for a secondary battery, and an anode and a secondary battery including the same.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 2, 2024
    Applicant: KOREA KUMHO PETROCHEMICAL CO., LTD
    Inventors: Jeong Geun KIM, Young Gil Choi, Yong Jun Lee
  • Publication number: 20240126831
    Abstract: A depth-wise convolution acceleration device using an MAC array processor structure according to the present invention may include a data output unit, which receives a data of each row of the image from the data buffer and inputs the data into convolution operation blocks while shifting the data N?1 times according to the kernel size (N×N) and a weight output unit, which receives the kernel data from the kernel buffer and sequentially inputs a weight value constituting the kernel data to each of the row convolution operation blocks, and inputs the weight delaying by N clocks if the row increases as N rows.
    Type: Application
    Filed: October 16, 2023
    Publication date: April 18, 2024
    Inventors: Hyo Seung LEE, Seen Suk KANG, Sang Gil CHOI, Seang Hoon KIM, Yong Wook KWON
  • Patent number: 11937490
    Abstract: An apparatus for manufacturing a display device includes a plurality of working tables, a plurality of arm modules, and a rotator. The plurality of working tables are spaced apart from each other in a first direction and are configured to support a target board. The plurality of arm modules are arranged in the first direction and spaced apart from the plurality of working tables in a second direction intersecting the first direction. The rotator is connected to the plurality of arm modules and configured to rotate about a rotation axis extending in the first direction.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myung Gil Choi, Jung Min Lee, Dong Woo Kim, Sang Moo Lee
  • Publication number: 20240081001
    Abstract: A display device includes a display panel having a folding axis extending in a first direction; and a panel supporter disposed on a surface of the display panel. The panel supporter includes a first layer including a first base resin and first fiber yarns extending in the first direction and dispersed in the first base resin, a second layer disposed on the first layer, the second layer including a second base resin and second fiber yarns extending in a second direction intersecting the first direction and dispersed in the second base resin, and a third layer disposed on the second layer, the third layer including a third base resin and third fiber yarns extending in the first direction and dispersed in the third base resin.
    Type: Application
    Filed: May 1, 2023
    Publication date: March 7, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Soh Ra HAN, Yong Hyuck LEE, Hong Kwan LEE, Hyun Jun CHO, Min Ji KIM, Sung Woo EO, Eun Gil CHOI, Sang Woo HAN
  • Publication number: 20240001741
    Abstract: A vehicle side structure including a rear impact beam mounted in a rear side door, a rear quarter section having a flange overlapping a rear portion of the rear impact beam, and a gusset aligned with the rear portion of the rear impact beam in an overlap area between the rear portion of the rear impact beam and the flange of the rear quarter section.
    Type: Application
    Filed: October 25, 2022
    Publication date: January 4, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Eon Pyo Kim, Sang Gil Choi, Soel Ki Choi
  • Publication number: 20230420810
    Abstract: A secondary battery, including an electrode assembly including a plurality of first electrode plates coated with a first active material, a plurality of second electrode plates coated with a second active material, and a separator positioned between each of the plurality of first electrode plates and each of the plurality of second electrode plates, and a case accommodating the electrode assembly through an internal space, wherein the electrode assembly includes a fixing member on at least one surface in contact with the case.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Inventors: Mi Sun LEE, Kyu Gil CHOI, Dae Sung RO, Dong Hui KIM