Patents by Inventor Chang Kyun Kim

Chang Kyun Kim 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: 11949881
    Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 2, 2024
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong University
    Inventors: Se-Yoon Jeong, Hae-Chul Choi, Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Jae-Gon Kim, Kyung-Ae Moon, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Yung-Lyul Lee, Dong-Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Dae-Yeon Kim, Dong-Kyun Kim
  • Publication number: 20230415332
    Abstract: The present invention relates to a surgical double parallelogram device, and to a surgical double parallelogram device in which respective pitch and roll module units form a double parallelogram while pitch- and roll-rotating. To this end, disclosed is the surgical double parallelogram device comprising: a plurality of pitch and roll module units in which each module forms a plurality of stages and which provides two degrees of freedom for each module to be capable of dependently pitch- and roll-rotating; and a plurality of pitch link units connected to the plurality of pitch and roll module units to form a double parallelogram.
    Type: Application
    Filed: November 11, 2021
    Publication date: December 28, 2023
    Inventors: Dong-Soo KWON, Un-Je YANG, Chang-Kyun KIM, Duk-Sang KIM
  • Patent number: 11534376
    Abstract: Provided is an antibacterial deodorant containing a titanium dioxide photocatalyst, including: a titanium dioxide photocatalyst; and a composition for antibacterial deodorization, wherein the titanium dioxide photocatalyst includes titanium dioxide (TiO2), copper (Cu), and magnesium (Mg).
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: December 27, 2022
    Assignee: DAESOO HI-TECH CO., LTD.
    Inventor: Chang Kyun Kim
  • Publication number: 20220401168
    Abstract: A slave device according to an example embodiment may comprise: a lower shaft; an upper shaft connected to the lower shaft so as to be able to slide with a single degree of freedom; a lower gripper rotatably supporting the lower shaft; an upper gripper rotatably supporting the upper shaft; a lower delta robot movably supporting the lower gripper; and an upper delta robot movably supporting the upper gripper.
    Type: Application
    Filed: June 19, 2020
    Publication date: December 22, 2022
    Inventors: Dong Soo KWON, Un Je YANG, Duk Yoo KONG, Joon Hwan KIM, Duk Sang KIM, Jeong Do AHN, Chang Kyun KIM, Byung Sik CHEON
  • Publication number: 20220331035
    Abstract: A surgical robot includes a surgical tool including a bendable joint portion, and a bending tendon connected to the joint portion and configured to bend the joint portion, a tube connected to the surgical tool and configured to accommodate the bending tendon therein, a base housing configured to rotatably support the tube and accommodate the bending tendon that passes through the tube, a bending driver configured to grasp the bending tendon, and translate in a longitudinal direction parallel to a rotation axis of the tube with respect to the base housing, and a rotation driver configured to rotatably support the tube with respect to the base housing, wherein when the tube rotates, the rotation driver is connected to one portion of the bending driver that grasps the bending tendon, and rotates the tube and the bending tendon together.
    Type: Application
    Filed: August 11, 2021
    Publication date: October 20, 2022
    Applicant: EASYENDO SURGICAL, INC.
    Inventors: Duk Yoo KONG, Un Je YANG, Chang Kyun KIM
  • Publication number: 20220257481
    Abstract: Provided is an antibacterial deodorant containing a titanium dioxide photocatalyst, including: a titanium dioxide photocatalyst; and a composition for antibacterial deodorization, wherein the titanium dioxide photocatalyst includes titanium dioxide (TiO2), copper (Cu), and magnesium (Mg).
    Type: Application
    Filed: August 19, 2021
    Publication date: August 18, 2022
    Inventor: Chang Kyun Kim
  • Publication number: 20220097226
    Abstract: Disclosed is a positioning arm including a link assembly including a translation link configured to translationally move along a virtual axis passing a remote center of motion (RCM) present at a predetermined position separated from one point and configured to move in at least two directions based on the one point, and a gravity torque compensator configured to provide a compensation torque in a direction opposite to a gravity torque applied to the one point by a self-weight of the link assembly.
    Type: Application
    Filed: August 7, 2019
    Publication date: March 31, 2022
    Applicants: EASYENDO SURGICAL, INC., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Soo KWON, Chang Kyun KIM, Byung Sik CHEON
  • Patent number: 10513618
    Abstract: Provided is a composition for forming a hard coating layer including about 0.1 wt % to about 15 wt % of a polysilazane, about 55 wt % to about 94.6 wt % of a reactive solvent containing hydroxyl group, about 5 wt % to about 20 wt % of a titanium dioxide (TiO2), and about 0.3 wt % to about 10 wt % of a zirconia (ZrO2). The composition provides a hard coating film which has excellent anti-fouling and superhydrophilicity, scratch resistance, abrasion resistance, antimicrobial property, weatherability, and a method for manufacturing the same which allow non-vacuum wet coating, thereby shortening fabrication time and providing excellent processability.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: December 24, 2019
    Inventor: Chang Kyun Kim
  • Publication number: 20190119506
    Abstract: Provided is a composition for forming a hard coating layer including about 0.1 wt % to about 15 wt % of a polysilazane, about 55 wt % to about 94.6 wt % of a reactive solvent containing hydroxyl group, about 5 wt % to about 20 wt % of a titanium dioxide (TiO2), and about 0.3 wt % to about 10 wt % of a zirconia (ZrO2). The composition provides a hard coating film which has excellent anti-fouling and superhydrophilicity, scratch resistance, abrasion resistance, antimicrobial property, weatherability, and a method for manufacturing the same which allow non-vacuum wet coating, thereby shortening fabrication time and providing excellent processability.
    Type: Application
    Filed: November 30, 2017
    Publication date: April 25, 2019
    Inventor: Chang Kyun Kim
  • Patent number: 8391476
    Abstract: A plurality of S-boxes is masked by one masking inverse table. Therefore, the computation cost and the use amount of the RAM necessary for masking at the time of a masking operation for defending a differential power analysis attack in a SEED encryption algorithm can be effectively reduced.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: March 5, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chang Kyun Kim, Chang Ho Jung, Il Hwan Park, E Joong Yoon
  • Publication number: 20110013767
    Abstract: A plurality of S-boxes is masked by one masking inverse table. Therefore, the computation cost and the use amount of the RAM necessary for masking at the time of a masking operation for defending a differential power analysis attack in a SEED encryption algorithm can be effectively reduced.
    Type: Application
    Filed: January 11, 2010
    Publication date: January 20, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Chang Kyun KIM, Chang Ho JUNG, Il Hwan PARK, E Joong YOON
  • Patent number: 7465633
    Abstract: Methods of forming capacitor-free DRAM cells include forming a field effect transistor by forming a first semiconductor wafer having a channel region protrusion extending therefrom and surrounding the channel region protrusion by an electrical isolation region. A portion of a backside of the first semiconductor wafer is then removed to define a semiconductor layer having a primary surface extending opposite the channel region protrusion and the electrical isolation region. A gate electrode is formed on the primary surface. The gate electrode extends opposite the channel region protrusion. The source and drain regions are formed in the semiconductor layer, on opposite sides of the gate electrode.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: December 16, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-whan Song, Chang-kyun Kim
  • Publication number: 20070166933
    Abstract: Methods of forming capacitor-free DRAM cells include forming a field effect transistor by forming a first semiconductor wafer having a channel region protrusion extending therefrom and surrounding the channel region protrusion by an electrical isolation region. A portion of a backside of the first semiconductor wafer is then removed to define a semiconductor layer having a primary surface extending opposite the channel region protrusion and the electrical isolation region. A gate electrode is formed on the primary surface. The gate electrode extends opposite the channel region protrusion. The source and drain regions are formed in the semiconductor layer, on opposite sides of the gate electrode.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 19, 2007
    Inventors: Ki-whan Song, Chang-kyun Kim
  • Patent number: 6321693
    Abstract: A reciprocating rotary piston system includes a cylinder (3) having an annular and hollow interior; a plurality of pistons (1A to 1D) of which first and second parties are formed to be disposed alternately on the same inner circumference of the cylinder, the first and second parties of the pistons reciprocating along a given arc at the same speed and in the opposite direction with respect to each other; a plurality of intake valves (4A to 4D) mounted at each point of the cylinder where the two adjacent pistons meet for controlling flow of a fluid introduced therein to from the outside; and a plurality of exhaust valves (5A to 5D) mounted at each point of the cylinder where the two adjacent pistons meet for controlling flow of a fluid forced out from the inside. The piston system is used for a hydraulic/pneumatic pump, a vacuum pump and an internal combustion engine.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: November 27, 2001
    Inventors: Chang Kyun Kim, Seung Kyun Kim