Patents by Inventor Dae-Geun Choi

Dae-Geun 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: 20240143448
    Abstract: Disclosed herein are a distributed cloud system, a data processing method of the distributed cloud system, a storage medium. The data processing method of the distributed cloud system includes running an application of an edge computing system requested by a user device, generating a snapshot image of the application, and storing the generated snapshot image and transmitting the stored image during migration.
    Type: Application
    Filed: October 25, 2023
    Publication date: May 2, 2024
    Inventors: Dae-Won KIM, Sun-Wook KIM, Su-Min JANG, Jae-Geun CHA, Hyun-Hwa CHOI
  • Patent number: 11916998
    Abstract: Disclosed herein is a multi-cloud edge system. The multi-cloud edge system includes a core cloud, a multi-cluster-based first edge node system, and a multi-cluster-based near edge node system, wherein the multi-cluster-based first edge node system includes multiple worker nodes, and a master node including a scheduler.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: February 27, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dae-Won Kim, Su-Min Jang, Jae-Geun Cha, Hyun-Hwa Choi, Sun-Wook Kim
  • Publication number: 20210354744
    Abstract: The present embodiments relate to a steering control device, a steering assist device, and a steering system. A steering control device comprises an input-side steering control module controlling an input-side steering motor to assist an input-side mechanism mechanically separated from an output-side mechanism connected with a wheel and connected with a steering wheel. The input-side steering control module may control the input-side steering motor and the telescopic motor.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 18, 2021
    Inventor: Dae Geun CHOI
  • Patent number: 10919566
    Abstract: An apparatus for controlling a motor for an electric power steering system according to an embodiment of the present invention, the motor including a stator on which a plurality of coils are wound and a rotor, which is placed inside the stator and into which a plurality of magnets are inserted, the plurality of coils being divided into two coil groups, the apparatus includes: a first controller configured to control supply of power applied to a first coil group that is one of the two coil groups; a second controller configured to control supply of power applied to a second coil group that is the other one of the two coil groups; and a boost converter configured to compensate for a difference between power output from the first controller and power output from the second controller.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: February 16, 2021
    Assignee: MANDO CORPORATION
    Inventor: Dae Geun Choi
  • Publication number: 20190077443
    Abstract: The present disclosure relates to an apparatus and method for controlling electric power steering (EPS), and an apparatus for controlling EPS according to an embodiment includes a monitoring unit configured to monitor whether abnormality occurs in a first power being supplied to a first torque sensor, second power being supplied to a second torque sensor, and third power being supplied to a third torque sensor, a selection unit configured to select a torque sensor used to control a quantity of an assist torque of EPS among the first torque sensor, the second torque sensor, and the third torque sensor based on information regarding whether abnormality occurs in the first power, the second power, and the third power, an assist torque controller configured to control the quantity of the assist torque of EPS based on a signal value generated from the selected torque sensor, and a steering angle determination unit configured to determine a steering angle value to be transmitted to an external system based on the i
    Type: Application
    Filed: September 7, 2018
    Publication date: March 14, 2019
    Inventor: Dae Geun CHOI
  • Publication number: 20180229762
    Abstract: An apparatus for controlling a motor for an electric power steering system according to an embodiment of the present invention, the motor including a stator on which a plurality of coils are wound and a rotor, which is placed inside the stator and into which a plurality of magnets are inserted, the plurality of coils being divided into two coil groups, the apparatus includes: a first controller configured to control supply of power applied to a first coil group that is one of the two coil groups; a second controller configured to control supply of power applied to a second coil group that is the other one of the two coil groups; and a boost converter configured to compensate for a difference between power output from the first controller and power output from the second controller.
    Type: Application
    Filed: February 14, 2018
    Publication date: August 16, 2018
    Inventor: Dae Geun CHOI
  • Patent number: 9692015
    Abstract: An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: June 27, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jong-Youp Shim, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Eung-Sug Lee, So-Hee Jeon, Jae-R. Youn, Jang-Joo Kim
  • Patent number: 8803459
    Abstract: Disclosed is a steering control apparatus having a structure by which it is possible to efficiently dissipate high heat that may be generated, simplify a manufacturing process, and reduce manufacturing costs.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: August 12, 2014
    Assignee: Mando Corporation
    Inventor: Dae Geun Choi
  • Patent number: 8486753
    Abstract: Disclosed are a patterning method of a metal oxide thin film using nanoimprinting, and a manufacturing method of a light emitting diode (LED). The method for forming a metal oxide thin film pattern using nanoimprinting includes: coating a photosensitive metal-organic material precursor solution on a substrate; preparing a mold patterned to have a protrusion and depression structure; pressurizing the photosensitive metal-organic material precursor coating layer with the patterned mold; forming a cured metal oxide thin film pattern by heating the pressurized photosensitive metal-organic material precursor coating layer or by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer while being heated; and removing the patterned mold from the metal oxide thin film pattern, and selectively further includes annealing the metal oxide thin film pattern.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: July 16, 2013
    Assignee: Korea Institute of Machinery and Materials
    Inventors: Hyeong Ho Park, Jun Ho Jeong, Ki Don Kim, Dae Geun Choi, Jun Hyuk Choi, Ji Hye Lee, Soon Won Lee
  • Patent number: 8247962
    Abstract: An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: August 21, 2012
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Jong-Youp Shim, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Eung-Sug Lee, So-Hee Jeon, Jae-R Youn, Jang-Joo Kim
  • Patent number: 8216542
    Abstract: A method for separating carbon nanotubes is disclosed where nanotubes with specific properties are separated from a mixture of nanotube products, which contains various types of nanotubes and impurities.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: July 10, 2012
    Assignee: Korea Institute of Machinery And Materials
    Inventors: Chang-Soo Han, Jin-Won Song, June-Ki Park, Jong-Hong Lee, Hee-Won Seo, Ji-Eun Kim, Dae-Geun Choi
  • Publication number: 20120100773
    Abstract: An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer.
    Type: Application
    Filed: January 3, 2012
    Publication date: April 26, 2012
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jong-Youp SHIM, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Eung-Sug Lee, So-Hee Jeon, Jae-R. Youn, Jang-Joo Kim
  • Publication number: 20120081055
    Abstract: Disclosed is a steering control apparatus having a structure by which it is possible to efficiently dissipate high heat that may be generated, simplify a manufacturing process, and reduce manufacturing costs.
    Type: Application
    Filed: October 3, 2011
    Publication date: April 5, 2012
    Inventor: Dae Geun CHOI
  • Patent number: 7994053
    Abstract: A method for forming a metal oxide thin film pattern using nanoimprinting according to one embodiment of the present invention includes: coating a photosensitive metal-organic material precursor solution on a substrate; pressurizing the photosensitive metal-organic material precursor coating layer to a mold patterned to have a protrusion and depression structure; forming the metal oxide thin film pattern by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer to cure it; and removing the patterned mold from the metal oxide thin film pattern.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: August 9, 2011
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Hyeong-Ho Park, Dae-Geun Choi, Jun-Ho Jeong, Ki-Don Kim, Jun-Hyuk Choi, Ji-Hye Lee, Seong-Je Park, So-Hee Jeon, Sa-Rah Kim
  • Publication number: 20110169027
    Abstract: Disclosed are a patterning method of a metal oxide thin film using nanoimprinting, and a manufacturing method of a light emitting diode (LED). The method for forming a metal oxide thin film pattern using nanoimprinting includes: coating a photosensitive metal-organic material precursor solution on a substrate; preparing a mold patterned to have a protrusion and depression structure; pressurizing the photosensitive metal-organic material precursor coating layer with the patterned mold; forming a cured metal oxide thin film pattern by heating the pressurized photosensitive metal-organic material precursor coating layer or by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer while being heated; and removing the patterned mold from the metal oxide thin film pattern, and selectively further includes annealing the metal oxide thin film pattern.
    Type: Application
    Filed: February 2, 2010
    Publication date: July 14, 2011
    Applicant: Korea Institute of Machinery & Materials
    Inventors: Hyeong-Ho Park, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Ji-Hye Lee, Soon-Won Lee
  • Patent number: 7914693
    Abstract: The present invention relates to a micro/nano imprint lithography technique and in particular, to a stamp that is used in an UV-micro/nano imprint lithography process or thermal micro/nano imprint lithography process and a method for fabricating the stamp. The method for fabricating a stamp for micro/nano imprint lithography of the present invention includes i) depositing a thin film of diamond-like carbon on a substrate, ii) applying resist on the diamond-like carbon thin film, iii) patterning the resist, iv) etching the diamond-like carbon thin film by using the resist as a protective layer, and v) removing the resist.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: March 29, 2011
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Jun-Ho Jeong, Young-Suk Sim, Ki-Don Kim, Dae-Geun Choi, Eung-Sug Lee
  • Publication number: 20110049548
    Abstract: A method for forming a metal oxide thin film pattern using nanoimprinting according to one embodiment of the present invention includes: coating a photosensitive metal-organic material precursor solution on a substrate; pressurizing the photosensitive metal-organic material precursor coating layer to a mold patterned to have a protrusion and depression structure; forming the metal oxide thin film pattern by irradiating ultraviolet rays to the pressurized photosensitive metal-organic material precursor coating layer to cure it; and removing the patterned mold from the metal oxide thin film pattern.
    Type: Application
    Filed: December 30, 2009
    Publication date: March 3, 2011
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Hyeong-Ho Park, Dae-Geun Choi, Jun-Ho Jeong, Ki-Don Kim, Jun-Hyuk Choi, Ji-hye Lee, Seong-Je Park, So-Hee Jeon, Sa-Rah Kim
  • Publication number: 20110024333
    Abstract: A method for separating carbon nanotubes is disclosed where nanotubes with specific properties are separated from a mixture of nanotube products, which contains various types of nanotubes and impurities.
    Type: Application
    Filed: February 22, 2006
    Publication date: February 3, 2011
    Inventors: Chang-Soo Han, Jin-Won Song, June-Ki Park, Jong-Hong Lee, Hee-Won Seo, Ji-Eun Kim, Dae-Geun Choi
  • Publication number: 20090128022
    Abstract: An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer.
    Type: Application
    Filed: November 19, 2008
    Publication date: May 21, 2009
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jong-Youp SHIM, Jun-Ho Jeong, Ki-Don Kim, Dae-Geun Choi, Jun-Hyuk Choi, Eung-Sug Lee, So-Hee Jeon, Jae-R Youn, Jang-Joo Kim
  • Publication number: 20070158872
    Abstract: The present invention relates to a micro/nano imprint lithography technique and in particular, to a stamp that is used in an UV-micro/nano imprint lithography process or thermal micro/nano imprint lithography process and a method for fabricating the stamp. The method for fabricating a stamp for micro/nano imprint lithography of the present invention includes i) depositing a thin film of diamond-like carbon on a substrate, ii) applying resist on the diamond-like carbon thin film, iii) patterning the resist, iv) etching the diamond-like carbon thin film by using the resist as a protective layer, and v) removing the resist.
    Type: Application
    Filed: October 18, 2006
    Publication date: July 12, 2007
    Inventors: Jun-Ho Jeong, Young-Suk Sim, Ki-Don Kim, Dae-Geun Choi, Eung-Sug Lee