Patents by Inventor Sang-Shin Kwak

Sang-Shin Kwak 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: 12002950
    Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: June 4, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Jik Soo Kim, Sang Bok Kim, Hyo Shin Kwak, Myoung Lae Kim, Se Rah Moon, Jin Seok Seo, Mi Jung Noh, Duck Chul Hwang
  • Publication number: 20240169484
    Abstract: A non-uniform super-resolution method, device, and recording medium of an image of the present disclosure may include an image separation unit which separates an input image into a high-quality region and a low-quality region based on a quality map image, an image quality conversion unit which acquires a converted high-quality region by converting image quality of the high-quality region, and a first image combination unit which combines the converted high-quality region and the low-quality region to transmit them to a super-resolution network.
    Type: Application
    Filed: November 20, 2023
    Publication date: May 23, 2024
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang Woon KWAK, Han Shin LIM, Hyon Gon CHOO
  • Patent number: 11978893
    Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 7, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Jik Soo Kim, Sang Bok Kim, Hyo Shin Kwak, Myoung Lae Kim, Se Rah Moon, Jin Seok Seo, Mi Jung Noh, Duck Chul Hwang
  • Publication number: 20240129465
    Abstract: An object-based image encoding/decoding method and device of the present disclosure may include an image partition step which partitions an image to obtain a first object region, a region scaling step which scales the first object region based on a scaling factor of the first object region to obtain a second objection region, a region merging step which merges the second object region with at least one of an object region different from the second object region or a non-object region to obtain a merged image, and an image reconstruction step which reconstructs the merged image.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 18, 2024
    Applicants: Electronics and Telecommunications Research Institute, Konkuk University Industrial Cooperation Corp
    Inventors: Hyon Gon CHOO, Sang Woon KWAK, Han Shin LIM, Kyoung Ro YOON, Shin KIM, Ye Gi LEE
  • Publication number: 20240127487
    Abstract: An image encoding/decoding method, device and recording medium based sed on multiple compression levels disclosure may include extracting a region of interest for machine vision from an input image, determining a compression level of the region of interest, and encoding the compression level of the region of interest.
    Type: Application
    Filed: October 11, 2023
    Publication date: April 18, 2024
    Applicants: Electronics and Telecommunications Research Institute, Konkuk University Industrial Cooperation Corp
    Inventors: Han Shin LIM, Sang Woon KWAK, Hyon Gon CHOO, Kyoung Ro YOON, Shin KIM, Ye Gi LEE
  • Patent number: 11960159
    Abstract: Provided are a polyamideimide film, a window cover film, and a display panel including the same. More specifically, a polyamideimide film including an amideimide structure derived from a dianhydride, a diamine, and an aromatic diacid dichloride is provided, wherein a chlorine content in the film is 5 to 33 ppm and a yellow index change amount ?YI is 5 or less, the yellow index change amount being measured in accordance with ASTM E313 after repeating a process of irradiating 0.55 W/m2 of UVA at 340 nm at 40° C. for 20 hours and then blocking UVA for 4 hours three times.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: April 16, 2024
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Hyeon Jeong Kim, Hye Ri Kim, Se Rah Moon, Sang Yoon Park, Hyo Shin Kwak
  • Publication number: 20240121415
    Abstract: An image encoding method includes detecting at least one attention region from an original image, acquiring a reconstructed picture for the original image, generating residual data between a first attention region in the original image and a second attention region corresponding to the first attention region in the reconstructed picture, and encoding the residual data.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 11, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyon Gon CHOO, Han Shin LIM, Sang Woon KWAK
  • Publication number: 20240106073
    Abstract: Provided are a separator coating composition for a secondary battery including inorganic particles and a silane salt compound having a specific structure, a separator using the same, and an electrochemical device including the same. Specifically, a separator coating composition for a secondary battery which implements adhesion between an inorganic material layer and a porous substrate without including an acid/polymer-based organic binder in a coating composition for forming the inorganic material layer on one or both surfaces of the porous substrate and does not need a separate dispersing agent for dispersing the inorganic particles, a separator manufactured using the same, and an electrochemical device including the separator are provided.
    Type: Application
    Filed: September 13, 2023
    Publication date: March 28, 2024
    Inventors: Tae Wook KWON, Sang Ick LEE, Won Sub KWACK, Cheol Woo KIM, Hyo Shin KWAK, Heung Taek BAE
  • Publication number: 20080055198
    Abstract: A driving method of a plasma display device for reducing power consumption is provided. In the driving method of the plasma display device, a discharge current, which is consumed during a period where a voltage of a first electrode is increased and maintained through an inductor in a sustain discharge circuit, is induced to flow to a capacitor of an energy recovery circuit connected to a second electrode, thereby recovering discharge power. Accordingly, power consumed during a sustain discharge period can be reduced.
    Type: Application
    Filed: April 4, 2007
    Publication date: March 6, 2008
    Inventor: Sang-Shin Kwak
  • Publication number: 20070120774
    Abstract: A plasma display according to an embodiment of the present invention has first, second, and third transistors which are coupled between a first power source for supplying a first voltage and a second power source for supplying a second voltage which is lower than the first voltage is disclosed. A first terminal of a fourth transistor is coupled to the first and second transistors, and a first terminal of a fifth transistor is coupled to the second and third transistors. In addition, a capacitor is coupled between a second terminal of the fourth transistor and a second terminal of the fifth transistor and is charged with a voltage corresponding to a difference between the first and second voltages.
    Type: Application
    Filed: November 29, 2006
    Publication date: May 31, 2007
    Inventors: Joon-Yeon Kim, Hak-Cheol Yang, Sang-Shin Kwak, Jong-Ki Choi
  • Publication number: 20070097034
    Abstract: A plasma display device, a driving apparatus and a driving method are provided. A first transistor is coupled to a power source and electrodes of a first group. A second transistor is coupled to the power source and electrodes of a second group. A third transistor is coupled to a first diode. The fourth transistor is coupled to the electrodes of the first group and a second power source. The fifth transistor is coupled to the electrodes of the second group and the second power source. A first diode is coupled to an inductor. A second diode is coupled to the fifth transistor and the electrodes of the second group. A third diode is coupled to the electrodes of the second group and the third transistor. The fourth diode is coupled to the third transistor and the electrodes of the second group.
    Type: Application
    Filed: October 23, 2006
    Publication date: May 3, 2007
    Inventor: Sang-Shin Kwak
  • Publication number: 20070097033
    Abstract: A circuit for supplying voltages to an electrode of a plasma display device is disclosed. The circuit includes an inductor connected to the electrode, a first capacitor and a second capacitor serially connected to the first capacitor. The circuit selectively forms certain paths to provide pulses to the electrode to sustain plasma discharges. The circuit provides pulses by increasing the potential of the electrode from a first voltage to a second voltage, maintaining the potential at about the second voltage during a first period, increasing the potential from about the second voltage to a third voltage, maintaining the potential at about the third voltage during a second period, decreasing the potential from about the third voltage to about the first voltage, and maintaining the potential at about the first voltage during a third period. Increasing the potential from the first to second voltages involves supplying energy stored in the first and second capacitors to the electrode via the inductor.
    Type: Application
    Filed: October 23, 2006
    Publication date: May 3, 2007
    Inventors: Sang-Shin Kwak, Hak-Cheol Yang, Joon-Yeon Kim, Yong-jin Jeong
  • Publication number: 20070091026
    Abstract: In a plasma display device, a drain of a first transistor is coupled to a power source supplying a Vs/2 voltage, and a second transistor is coupled between a source of the first transistor and a ground terminal. A first terminal of a capacitor is coupled to a node of the first transistor and the second transistor, and a diode is coupled between the Vs/2 power source and a second terminal of the capacitor. A third transistor is coupled between the second terminal of the capacitor and a plurality of first electrodes, and a fourth transistor is coupled between the plurality of first electrodes and the first terminal of the capacitor.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 26, 2007
    Inventor: Sang-Shin Kwak
  • Publication number: 20070091017
    Abstract: In a driving circuit for alternately applying a high level voltage and a low level voltage to an electrode of a plasma display, a first capacitor formed in a power source unit and that supplies the high level voltage is used to increase a voltage at the electrode to the high level voltage. In addition, a second capacitor coupled between the first capacitor and a voltage source for supplying the low level voltage is used to decrease the voltage at the electrode.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 26, 2007
    Inventors: Sang-Shin Kwak, Hak-Cheol Yang, Joon-Yeon Kim, Hyun-Gu Heo
  • Publication number: 20070091027
    Abstract: A plasma display device, a driving apparatus and a driving method is provided. The display device includes a plurality of electrodes, a first transistor is coupled to a power source, and a second transistor coupled between the first transistor and a second power source. A first capacitor is coupled to the first transistor and the second transistor, a second capacitor is coupled to the first capacitor, and a diode is coupled between the first power source and the second capacitor. The third transistor and the fourth transistor are coupled to each other in a back-to-back manner, and are coupled in series with an inductor. A fifth transistor is coupled between the second capacitor and one or more of the electrodes, and a sixth transistor is coupled between the first capacitor and one or more of the electrodes.
    Type: Application
    Filed: October 18, 2006
    Publication date: April 26, 2007
    Inventor: Sang-Shin Kwak
  • Publication number: 20070080901
    Abstract: A plasma display device is disclosed. In one embodiment, the device includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of third electrodes formed to cross the first and second electrodes. A first voltage is alternately applied to the plurality of first and second electrodes using a first address scheme for converting on-cells into an off-cell state during a sustain period at a first subfield, and a second address scheme is used to convert the off-cells into an on-cell state at a second subfield. During a first period between the first and second subfields, a voltage is applied to the plurality of first and second electrodes such that a voltage difference between the plurality of first and second electrodes is greater than the first voltage. With such a first period, even when the write address scheme and the erase address scheme are used together, the initializing is performed appropriately.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 12, 2007
    Inventors: Hak-Cheol Yang, Joon-Yeon Kim, Hyun-Gu Heo, Sang-Shin Kwak
  • Publication number: 20070080904
    Abstract: A plasma display, a driving apparatus and a method of driving the same is provided. A first transistor is coupled between a first electrode and a first power source, and a second transistor is coupled to the first electrode. A third transistor is coupled between the second transistor and a second power source, and a first inductor is coupled between the second transistor and a first energy recovery power source. A fourth transistor is coupled between the second electrode and the first power source, and a fifth transistor is coupled to the second electrode. A sixth transistor is coupled between the fifth transistor and the second power source, and a second inductor is coupled between the fifth transistor and a second energy recovery power source.
    Type: Application
    Filed: October 5, 2006
    Publication date: April 12, 2007
    Inventor: Sang-Shin Kwak