Patents by Inventor Chang Koo

Chang Koo 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: 11991347
    Abstract: Provided is an image processing device configured to compress first image data. The image processing device includes an encoding circuit configured to compress the first image data into second image data including prediction data and residual data, compress the second image data into third image data by performing entropy encoding on the second image data, generate a header representing a compression ratio of the third image data, and store the third image data along with the header in a memory device as compressed first image data.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: May 21, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Ho Jun, Chang Soo Park, Moon Kyu Song, Kyung Koo Lee, Kil Whan Lee, Hyuk Jae Jang, Kyung Ah Jeong
  • Publication number: 20240141530
    Abstract: A method for producing a copper composite structure is disclosed. The method for producing a copper composite structure includes a first step of forming a copper pillar structure; and a second step of annealing the copper pillar structure under a nitrogen atmosphere.
    Type: Application
    Filed: March 8, 2022
    Publication date: May 2, 2024
    Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Chang-Koo KIM, Jun-Hyun KIM, Sanghyun YOU
  • Publication number: 20240101051
    Abstract: A malfunction of an on-board diagnostic (OBD) controller system is diagnosed by comparing a voltage of an input part of an OBD controller with a voltage of a battery. The OBD controller is connected to the battery through a communication line in the HEV. When an input voltage measuring circuit or the controller is malfunctioning, the malfunction is diagnosed.
    Type: Application
    Filed: January 26, 2023
    Publication date: March 28, 2024
    Inventor: Bon-Chang Koo
  • Publication number: 20240006186
    Abstract: Disclosed is a plasma etching method. The method includes a first step of vaporizing liquid heptafluoropropyl methyl ether (HFE-347mcc3) and liquid pentafluoropropanol (PFP); a second step of supplying a discharge gas containing the vaporized HFE-347mcc3, the vaporized PFP, and argon gas to a plasma chamber in which an etching target is disposed; and a third step of discharging the discharge gas to generate plasma and of plasma-etching the etching target using the generated plasma.
    Type: Application
    Filed: July 28, 2021
    Publication date: January 4, 2024
    Applicant: Ajou University Industry-Academic Cooperation Foundation
    Inventors: Chang-Koo KIM, Jun-Hyun KIM, Sang-Hyun YOU
  • Patent number: 11764547
    Abstract: A method for manufacturing a surge absorbing device is provided. The method includes providing an elongate ceramic tube having a hollow space defined therein and having open and opposite first and second end; forming a first plating layer and a second plating layer on the first end and the second end, respectively; placing a surge absorbing element within the hollow space within the ceramic tube; disposing first and second brazing rings on the first plating layer and the second plating layer, respectively; disposing first and second sealing electrodes on the first and second brazing rings respectively; and melting the first and second brazing rings in an inert gas atmosphere to attach the first and second sealing electrodes onto the first plating layer and the second plating layer, respectively.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: September 19, 2023
    Assignees: AJOU UNIVERSITYINDUSTRY-ACADEMIC COOPERATION FOUNDATION, SMART ELECTRONICS INC.
    Inventors: Chang-Koo Kim, Hae-Min Lee, Doo Won Kang, Hyun Chang Kim
  • Patent number: 11753971
    Abstract: A continuously variable valve duration (CVVD) system includes a controller configured to determine whether a learning value existing in the CVVD system is required to be verified during one of a hardware abnormality, a learning value abnormality, and a motor voltage abnormality. In particular, the controller performs a learning value verification control using a rotation detection value and switches from a learning value verification control to a re-learning control when re-learning is required.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: September 12, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Bon-Chang Koo
  • Patent number: 11746687
    Abstract: An EHC line leakage diagnosis method can operate a heater of an oxygen detector when satisfying one or more conditions of an engine off time, a coolant temperature, and an outside air temperature by a diagnosis controller upon the key-on of the non-operation of an engine, and then, determine the normality or abnormality of a temperature drop using a change in a temperature value of a signal value and the temperature value detected by the oxygen detector after an air pump is driven, and then confirm the leakage of an exhaust line and a line on the rear end portion of an EHC valve of an air line using the number of times of the occurrence of the abnormality of the temperature drop, and can perform the failure diagnosis without generating the exhaust gas by not operating an engine.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: September 5, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Bon-Chang Koo
  • Publication number: 20230203978
    Abstract: An EHC line leakage diagnosis method can operate a heater of an oxygen detector when satisfying one or more conditions of an engine off time, a coolant temperature, and an outside air temperature by a diagnosis controller upon the key-on of the non-operation of an engine, and then, determine the normality or abnormality of a temperature drop using a change in a temperature value of a signal value and the temperature value detected by the oxygen detector after an air pump is driven, and then confirm the leakage of an exhaust line and a line on the rear end portion of an EHC valve of an air line using the number of times of the occurrence of the abnormality of the temperature drop, and can perform the failure diagnosis without generating the exhaust gas by not operating an engine.
    Type: Application
    Filed: June 23, 2022
    Publication date: June 29, 2023
    Inventor: Bon-Chang KOO
  • Publication number: 20230197466
    Abstract: Disclosed is a plasma etching method. The plasma etching method comprises: a first step for evaporating liquid perfluoropropyl carbinol (PPC); a second step for supplying a discharge gas including the evaporated PPC and argon gas to a plasma chamber in which an object to be etched is arranged; and a third step for discharging the discharge gas to generate plasma, and using the plasma to plasma-etch the object to be etched.
    Type: Application
    Filed: March 2, 2021
    Publication date: June 22, 2023
    Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Chang-Koo KIM, Jun-Hyun KIM
  • Patent number: 11681078
    Abstract: The present disclosure provides a structure having a low reflectance surface, wherein the structure comprises: a base plate; and a plurality of inclined rods protruding from a first face of the base plate and inclined relative to a normal line to the first face, wherein the inclined rods are spaced from each other. Travel paths of light beams in the structure may be longer along the inclined rods. As a result, a larger amount of light may be absorbed by the structure having a low reflectance surface. The amount of light-beams as reflected from the structure having a low reflectance surface may be significantly reduced.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: June 20, 2023
    Assignee: AJOU UNIVERSITY INDUSTRY—ACADEMIC COOPERATION FOUNDATION
    Inventors: Chang-Koo Kim, Jun-Hyun Kim
  • Publication number: 20230174092
    Abstract: A vehicle and a method of displaying nitrogen oxide emissions of the vehicle to accurately detect and easily display an amount of nitrogen oxide emitted from the vehicle includes receiving nitrogen oxide concentration values of exhaust gas in the vehicle, calculating an average value of the nitrogen oxide concentration based on the nitrogen oxide concentration values, calculating an amount of nitrogen oxide in the exhaust gas based on the average value of the nitrogen oxide concentration, calculating a nitrogen oxide index of the exhaust gas based on the amount of the nitrogen oxide, and displaying the calculated nitrogen oxide index for each of a plurality of predetermined sections through a display unit of a cluster of the vehicle.
    Type: Application
    Filed: November 18, 2022
    Publication date: June 8, 2023
    Inventor: Bon Chang Koo
  • Publication number: 20230178341
    Abstract: A plasma etching method is disclosed. The plasma etching method comprises: a first step for vaporizing liquid pentafluoropropanol (PFP); a second step for supplying discharge gas comprising the vaporized PFP and argon gas into a plasma chamber in which an object to be etched is placed; and a third step for discharging the discharge gas to generate plasma and etching the object by using the plasma.
    Type: Application
    Filed: March 2, 2021
    Publication date: June 8, 2023
    Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Chang-Koo KIM, Jun-Hyun KIM
  • Patent number: 11615652
    Abstract: A method for diagnosing failure of a cold start E/M reduction system confirms the change in the torque reserve compared to the torque reserve confirmed for the ignition timing upon cold start by any one of an operation of an electric load device, an operation of an alternator, an operation of a purge valve, an operation of an air conditioner, a shift state of a transmission, and a coolant temperature state of an engine, and confirms the failure or normality of any one of the electric load device, the alternator, the purge valve, and the air conditioner is normal or failed using the change in the torque reserve to apply the confirmed result to determine whether the cold start E/M reduction system is abnormal, securing failure diagnosis accuracy for the components for the cold start E/M reduction.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: March 28, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventor: Bon-Chang Koo
  • Publication number: 20230051949
    Abstract: An embodiment system for mild hybrid starter and generator (MHSG) failure diagnosis of a mild hybrid vehicle includes a data detection part configured to detect data for determining whether to activate a catalyst, and a controller configured to determine whether there is an MHSG failure using a deviation between a required torque and an actual operating torque of an MHSG after determining whether catalyst activation is needed and whether to start a stage of the MHSG failure diagnosis based on the data detected by the data detection part.
    Type: Application
    Filed: December 29, 2021
    Publication date: February 16, 2023
    Inventor: Bon Chang Koo
  • Patent number: 11543463
    Abstract: An apparatus and method for diagnosing a failure in a blower of a vehicle improve performance of various systems using state information of the blower. The apparatus and method include a controller that converts an operating current value supplied to the blower of the vehicle into a voltage value and diagnoses whether the blower fails based on the voltage value. The apparatus and method also include a display that displays whether the blower fails.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: January 3, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Bon Chang Koo
  • Publication number: 20220363989
    Abstract: Disclosed is a plasma etching method including a first step of providing a mixed gas containing argon gas and vaporized 1,1,2,2-tetrafluoroethly-2,2,2-trifluoroethyl ether having a molecular structure of a following Chemical Formula 1 to a plasma chamber in which an etching target is disposed; and a second step of etching the etching target using plasma generated from the mixed gas:
    Type: Application
    Filed: June 1, 2020
    Publication date: November 17, 2022
    Applicant: AJOUUNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Chang-Koo KIM, Jun-Hyun KIM, Jin-Su PARK
  • Publication number: 20220282646
    Abstract: A continuously variable valve duration (CVVD) system includes a controller configured to determine whether a learning value existing in the CVVD system is required to be verified during one of a hardware abnormality, a learning value abnormality, and a motor voltage abnormality. In particular, the controller performs a learning value verification control using a rotation detection value and switches from a learning value verification control to a re-learning control when re-learning is required.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Bon-Chang Koo
  • Publication number: 20220246439
    Abstract: A plasma etching method includes a first step of supplying a mixed gas containing vaporized heptafluoroisopropyl methyl ether gas having a molecular structure of a following Chemical Formula 1 or vaporized heptafluoropropyl methyl ether gas having a molecular structure of a following Chemical Formula 2 and argon gas into a plasma chamber in which an etching target is disposed; and a second step of etching the etching target using plasma generated from the mixed gas:
    Type: Application
    Filed: June 1, 2020
    Publication date: August 4, 2022
    Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC CORPORATION FOUNDATION
    Inventors: Chang-Koo KIM, Jun-Hyun KIM, Jin-Su PARK
  • Patent number: 11391188
    Abstract: A method for verifying a CVVD location learning result may include performing a learning value verification control by confirming a position of a control shaft connected to a motor with a signal value of an auxiliary cam sensor for a rotation of a camshaft if a controller determines that a learning value acquired in a short duration and a long duration of a CVVD system is desired to be verified.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: July 19, 2022
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventor: Bon-Chang Koo
  • Publication number: 20220196879
    Abstract: The present disclosure provides a structure having a low reflectance surface, wherein the structure comprises: a base plate; and a plurality of inclined rods protruding from a first face of the base plate and inclined relative to a normal line to the first face, wherein the inclined rods are spaced from each other. Travel paths of light beams in the structure may be longer along the inclined rods. As a result, a larger amount of light may be absorbed by the structure having a low reflectance surface. The amount of light-beams as reflected from the structure having a low reflectance surface may be significantly reduced.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 23, 2022
    Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Chang-Koo KIM, Jun-Hyun KIM