Patents by Inventor Woo-hyun Cho

Woo-hyun Cho 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: 20240098382
    Abstract: An image processing device including: a decision pixel manager for setting a decision area for a defect candidate pixel, and determining a first decision pixel and a second decision pixel, based on first phase information of pixels included in the decision area with respect to a first modulation frequency of a sensing light source among the pixels; a target pixel determiner for calculating a phase difference between the first decision pixel and the second decision pixel, based on second phase information of the pixels with respect to a second modulation frequency of the sensing light source, and determining the defect candidate pixel as a target pixel, corresponding to that the phase difference exceeds a predetermined reference value; and a phase corrector for changing a phase of the target pixel, based on the phase difference.
    Type: Application
    Filed: February 28, 2023
    Publication date: March 21, 2024
    Applicant: SK hynix Inc.
    Inventors: Woo Young JEONG, Ja Min KOO, Tae Hyun KIM, Jae Hwan JEON, Chang Hun CHO
  • Publication number: 20240078322
    Abstract: The present disclosure relates to a memory system capable of encrypting and storing data, and a memory controller. The memory controller may include a first interface configured to perform data Communication with a first external device, a second interface configured to generate a signal for controlling an operation of a second extern& device and transmit the signal; and a processor configured to receive, from the first external device, a data write command to write data to the second external device, encrypt the data by using one of a plurality of keys stored in a key area provided in the first external device in response to the data write command, and then control the encrypted data to be written to the second external device.
    Type: Application
    Filed: January 13, 2023
    Publication date: March 7, 2024
    Inventors: Seung Duk CHO, Woo Tae CHANG, Gi Jo JEONG, Jung Hyun JOH
  • Patent number: 10288274
    Abstract: Disclosed is a LED lighting apparatus comprising: a LED module including a substrate 10 having a front surface 12 and a rear surface 13, and a plurality of LEDs 11 mounted on the front surface 12 of the substrate 10 and driven by direct input of AC voltage; a heat sink 50 for dissipating heat from the LEDs 11 on the substrate 10; a plurality of capacitors 20 to eliminate flickering of the LEDs 11; a flame barrier plate 30 being made of flame-retardant material and covering the front surface 12 of the substrate 10 so as to insulate the LED module from fire flame; and a plurality of capacitor housings 31 made of flame-retardant material, each of the capacitor housings 31 including an opening 32 formed at a front side and accommodating each capacitor 20 so as to insulate the capacitor 20 therein from fire flame; a flame barrier film 40 made of flame-retardant material and covering the opening 32 of the capacitor housing 31; and lens 60 detachably coupled to the rim of the heat sink by hook 62.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: May 14, 2019
    Assignees: ILSUNG CO., LTD.
    Inventor: Woo Hyun Cho
  • Publication number: 20180320875
    Abstract: Disclosed is a LED lighting apparatus comprising: a LED module including a substrate 10 having a front surface 12 and a rear surface 13, and a plurality of LEDs 11 mounted on the front surface 12 of the substrate 10 and driven by direct input of AC voltage; a heat sink 50 for dissipating heat from the LEDs 11 on the substrate 10; a plurality of capacitors 20 to eliminate flickering of the LEDs 11; a flame barrier plate 30 being made of flame-retardant material and covering the front surface 12 of the substrate 10 so as to insulate the LED module from fire flame; and a plurality of capacitor housings 31 made of flame-retardant material, each of the capacitor housings 31 including an opening 32 formed at a front side and accommodating each capacitor 20 so as to insulate the capacitor 20 therein from fire flame; a flame barrier film 40 made of flame-retardant material and covering the opening 32 of the capacitor housing 31; and lens 60 detachably coupled to the rim of the heat sink by hook 62.
    Type: Application
    Filed: May 5, 2017
    Publication date: November 8, 2018
    Applicants: ILSUNG CO., LTD.,
    Inventor: Woo Hyun CHO
  • Patent number: 9322084
    Abstract: Apparatus and methods for industrial-scale production of metal matrix nanocomposites (MMNCs) are provided. The apparatus and methods can be used for the batch production of an MMNC in a volume of molten metal housed within the cavity of a production chamber. Within the volume of molten metal, a flow is created which continuously carries agglomerates of nanoparticles, which have been introduced into the molten metal, through a cavitation zone formed in a cavitation cell housed within the production chamber.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: April 26, 2016
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Xiaochun Li, Noe Gaudencio Alba-Baena, Daniel Earl Hoefert, David Weiss, Woo-hyun Cho, Ben Peter Slater, Hongseok Choi
  • Patent number: 8882308
    Abstract: Disclosed is a recessed LED downlighting apparatus comprising a LED downlight fixture assembly 100, a mounting frame 300 for supporting the LED downlight fixture assembly 100 on a ceiling panel 1, an electric junction box 400 mounted on the mounting frame 300, at least one electric wire 210 for electrically connecting the LED drive 170 and the junction box 400, including a first electric wire element 210A extended from the LED drive 170 and a second electric wire element 210B extended from the junction box 170, an electric connector 230 for electrically connecting the first electric wire element 210A and the second electric wire element 210B, a flexible metal conduit 220 including for sheltering the electric wire 210, a first conduit element 220A for sheltering the first electric wire element 210A and a second conduit element 220B for sheltering the second electric wire element 210B, the first conduit element 220A being secured at one end to the plate of the heat sink 120 with a clip element, and the second c
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: November 11, 2014
    Assignee: Ilsung Co Ltd.
    Inventor: Woo Hyun Cho
  • Patent number: 8865057
    Abstract: Apparatus and methods for industrial-scale production of metal matrix nanocomposites (MMNCs) are provided. The apparatus and methods can be used for the batch production of an MMNC in a volume of molten metal housed within the cavity of a production chamber. Within the volume of molten metal, a flow is created which continuously carries agglomerates of nanoparticles, which have been introduced into the molten metal, through a cavitation zone formed in a cavitation cell housed within the production chamber.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: October 21, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Xiaochun Li, Noe Gaudencio Alba-Baena, Daniel Earl Hoefert, David Weiss, Woo-hyun Cho, Ben Peter Slater, Hongseok Choi
  • Publication number: 20140307450
    Abstract: Disclosed is a recessed LED downlighting apparatus comprising a LED downlight fixture assembly 100, a mounting frame 300 for supporting the LED downlight fixture assembly 100 on a ceiling panel 1, an electric junction box 400 mounted on the mounting frame 300, at least one electric wire 210 for electrically connecting the LED drive 170 and the junction box 400, including a first electric wire element 210A extended from the LED drive 170 and a second electric wire element 210B extended from the junction box 170, an electric connector 230 for electrically connecting the first electric wire element 210A and the second electric wire element 210B, a flexible metal conduit 220 including for sheltering the electric wire 210, a first conduit element 220A for sheltering the first electric wire element 210A and a second conduit element 220B for sheltering the second electric wire element 210B, the first conduit element 220A being secured at one end to the plate of the heat sink 120 with a clip element, and the second c
    Type: Application
    Filed: April 10, 2013
    Publication date: October 16, 2014
    Inventor: Woo Hyun CHO
  • Publication number: 20130199339
    Abstract: Apparatus and methods for industrial-scale production of metal matrix nanocomposites (MMNCs) are provided. The apparatus and methods can be used for the batch production of an MMNC in a volume of molten metal housed within the cavity of a production chamber. Within the volume of molten metal, a flow is created which continuously carries agglomerates of nanoparticles, which have been introduced into the molten metal, through a cavitation zone formed in a cavitation cell housed within the production chamber.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 8, 2013
    Inventors: Xiaochun Li, Noe Gaudencio Alba-Baena, Daniel Earl Hoefert, David Weiss, Woo-hyun Cho, Ben Peter Slater, Hongseok Choi