Patents by Inventor Dong-Hyeok Kim
Dong-Hyeok 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).
-
Publication number: 20240137511Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.Type: ApplicationFiled: January 4, 2024Publication date: April 25, 2024Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Jin-Ho LEE, Jung-Won KANG, Hyunsuk KO, Sung-Chang LIM, Dong-San JUN, Ha-Hyun LEE, Seung-Hyun CHO, Hui-Yong KIM, Hae-Chul CHOI, Dae-Hyeok GWON, Jae-Gon KIM, A-Ram BACK
-
Patent number: 11939505Abstract: Provided are a silicon nitride film etching composition, a method of etching a silicon nitride film using the same, and a manufacturing method of a semiconductor device. Specifically, a silicon nitride film may be stably etched with a high selection ratio relative to a silicon oxide film, and when the composition is applied to an etching process at a high temperature and a semiconductor manufacturing process, not only no precipitate occurs but also anomalous growth in which the thickness of the silicon oxide film is rather increased does not occur, thereby minimizing defects and reliability reduction.Type: GrantFiled: August 30, 2021Date of Patent: March 26, 2024Assignee: ENF Technology Co., Ltd.Inventors: Dong Hyun Kim, Hyeon Woo Park, Sung Jun Hong, Myung Ho Lee, Myung Geun Song, Hoon Sik Kim, Jae Jung Ko, Myong Euy Lee, Jun Hyeok Hwang
-
Patent number: 11936075Abstract: Disclosed are a separator for fuel cells capable of minimizing the volume of a system and the use of sealants, and a stack for fuel cells, more particularly, a stack for solid oxide fuel cells, including the same. Specifically, by adding a metal sheet having a specific shape, position and size to the separator, the stress applied to the sealant can be uniformized, and thus the oxidizing agent and fuel can be separated and electrically isolated using only a piece of sealant. Therefore, the stack for fuel cells is characterized in that there is no variation in temperature, reactant concentration, power, or the like between respective unit cells, so delamination and microcracks do not occur, the volume is minimized, and the power density per unit volume is very high.Type: GrantFiled: December 21, 2021Date of Patent: March 19, 2024Assignee: Korea Institute of Science and TechnologyInventors: Jong Ho Lee, Kyung Joong Yoon, Ji Won Son, Seong Kook Oh, Sang Hyeok Lee, Dong Hwan Kim, Min Jun Oh
-
Publication number: 20240070988Abstract: A method for estimating locomotion in virtual reality performed by at least one processor includes measuring a plurality of pressure points according to a user's locomotion using a high-resolution tactile sensor including a plurality of pressure sensors, extracting a plurality of footprint images including the plurality of measured pressure points, clustering the plurality of pressure points into a first set of pressure points corresponding to a left foot and a second set of pressure points corresponding to a right foot, based on the plurality of extracted footprint images, and estimating at least a portion of a locomotion direction and a locomotion speed of the user using a first cluster corresponding to the first set of pressure points and a second cluster corresponding to the second set of pressure points.Type: ApplicationFiled: August 24, 2023Publication date: February 29, 2024Inventors: Yunho CHOI, Kyung-Joong KIM, Ecehan AKAN, Dong Hyeok PARK, Sung Ha LEE, Hyeon-Chang JEON, Isaac HAN
-
Publication number: 20240065676Abstract: The present disclosure relates to an apparatus for controlling movement of an ultrasonic wave generating unit, the apparatus characterized by comprising: a transfer unit for moving the ultrasonic wave generating unit; and a control unit for controlling the operation of the ultrasonic wave generating unit and the transfer unit, wherein the control unit controls the ultrasonic wave generating unit such that, when the ultrasonic wave generating unit moves, ultrasonic waves are irradiated at intervals to the skin on a movement path of the ultrasonic wave generating unit.Type: ApplicationFiled: October 24, 2023Publication date: February 29, 2024Applicant: JEISYS MEDICAL INC.Inventors: Eun Ho KIM, Kwang Hyeok JUNG, Si Youn KIM, Dong Hwan KANG, Min Young KIM, Hyun Jin KIM, Kwang Ho RYU
-
Patent number: 11917148Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.Type: GrantFiled: February 8, 2022Date of Patent: February 27, 2024Assignees: Electronics And Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Hanbat National University Industry-Academic Cooperation FoundationInventors: Jin-Ho Lee, Jung-Won Kang, Hyunsuk Ko, Sung-Chang Lim, Dong-San Jun, Ha-Hyun Lee, Seung-Hyun Cho, Hui-Yong Kim, Hae-Chul Choi, Dae-Hyeok Gwon, Jae-Gon Kim, A-Ram Back
-
Publication number: 20230206791Abstract: A display device includes a first display panel realizing a first image light of a first resolution; and a second display panel realizing a second image light synchronized with the first image light, the second image light having a second resolution lower than the first resolution, wherein a second virtual image implemented by the second image light is superimposed with a first virtual image implemented by the first image light to implement a virtual reality image.Type: ApplicationFiled: December 19, 2022Publication date: June 29, 2023Applicant: LG DISPLAY CO., LTD.Inventors: Sun-Woong KIM, Dong-Hyeok KIM
-
Publication number: 20230186426Abstract: A method of compensating a display device includes: displaying a first display image of a calibration pattern; generating a first photograph image of the calibration pattern by capturing the first display image; generating a measurement representative position data corresponding to the calibration pattern by measuring the first photograph image; generating a third-order fitting representative position data by performing a two-dimensional third-order fitting; displaying a second display image of a full white display; generating a second photograph image of the full white display by capturing the second display image; generating a first crop image by performing a size adjustment based on the third-order fitting representative position data; calculating a luminance compensation value by comparing a measured luminance of the first crop image with a target luminance; and generating a compensated image data by applying the luminance compensation value to an image data.Type: ApplicationFiled: November 11, 2022Publication date: June 15, 2023Inventors: Min-Gyu Choi, Se-Jin Lee, Dong-Hyeok Kim
-
Publication number: 20230123263Abstract: A CMP slurry composition for polishing a boron silicon (B—Si) compound may include a catalyst, an abrasive including a plurality of particles and being configured to polish the boron silicon (B—Si) compound, and a pH adjuster. The CMP slurry composition may further include an oxidizer. The catalyst may have a binary catalyst configuration comprising a first catalyst material and a second catalyst material. The first catalyst material may include Fe, and the second catalyst material may include Cu. The oxidizer may include hydrogen peroxide (H2O2). A CMP (chemical mechanical polishing) method for a boron silicon (B—Si) compound may include providing a substrate structure including a thin film formed of the boron silicon (B—Si) compound and performing a CMP process on the thin film. The CMP process is performed by using the CMP slurry composition.Type: ApplicationFiled: October 18, 2022Publication date: April 20, 2023Inventors: Cheolmin SHIN, Hyun Goo KANG, Jong Young CHO, Ungyu PAIK, Taeseup SONG, Dong Hyeok KIM
-
Publication number: 20220187505Abstract: A display device includes a display panel including a plurality of pixel regions and configured to display a picture or an image, and a microlens array disposed on a front surface of the display panel. The microlens array includes a plurality of microlenses each having a polygonal pattern. Further, the microlenses can have different slanted angles.Type: ApplicationFiled: December 9, 2021Publication date: June 16, 2022Applicant: LG Display Co., Ltd.Inventors: Min-Gyu CHOI, Se-Jin LEE, Dong-Hyeok KIM
-
Patent number: 11112645Abstract: A liquid crystal display device includes a liquid crystal panel, an optical sheet positioned below the liquid crystal panel, a light guide plate positioned below the optical sheet, a selective light-blocking panel positioned below the light guide plate, a reflector positioned below the selective light-blocking panel, and a light emitting diode (LED) assembly positioned on a side of the light guide plate, wherein the selective light-blocking panel is sectioned into a plurality of blocks, and transmits, or diffuses and reflects light emitted to a back surface of the light guide plate for each of blocks.Type: GrantFiled: November 20, 2018Date of Patent: September 7, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Dae-Hoon Ko, Dong-Hyeok Kim
-
Publication number: 20190163015Abstract: A liquid crystal display device includes a liquid crystal panel, an optical sheet positioned below the liquid crystal panel, a light guide plate positioned below the optical sheet, a selective light-blocking panel positioned below the light guide plate, a reflector positioned below the selective light-blocking panel, and a light emitting diode (LED) assembly positioned on a side of the light guide plate, wherein the selective light-blocking panel is sectioned into a plurality of blocks, and transmits, or diffuses and reflects light emitted to a back surface of the light guide plate for each of blocks.Type: ApplicationFiled: November 20, 2018Publication date: May 30, 2019Applicant: LG DISPLAY CO., LTDInventors: Dae-Hoon KO, Dong-Hyeok KIM
-
Patent number: 8976311Abstract: A backlight unit adapted to implement enhanced light efficiency and uniform brightness is disclosed. The backlight unit includes a plurality of light sources arranged at fixed intervals, a diffusion plate disposed on the plurality of light sources, prism patterns formed on one surface of the diffusion plate, and micro-lens patterns formed on the other surface of the diffusion plate. The vertex angle of each prism pattern is in a range of about 64°˜76°.Type: GrantFiled: December 16, 2009Date of Patent: March 10, 2015Assignee: LG Display Co. Ltd.Inventors: Min Joo Kim, Dong Hyeok Kim, Jin Ryun Kim
-
Patent number: 8373820Abstract: A backlight unit for a liquid crystal display device includes a reflection plate, first and second light guide plates over the reflection plate, the second light guide plate disposed between the first light guide plate and the reflection plate, wherein the first light guide plate includes first and second sections alternating with each other, and the second light guide plate includes third and fourth sections alternating with each other, the first and third sections having patterns at rear surfaces, the second and fourth sections excluding patterns, wherein the first section corresponds to the fourth section, and the second section corresponds to the third section, first and second light-emitting diode (LED) assemblies at opposite sides of the first and second light guide plates, each of the first and second LED assemblies including LEDs arranged in first and second lines, and a plurality of optical sheets over the first light guide plate, wherein the LEDs of the first lines of the first and second LED assembType: GrantFiled: December 21, 2009Date of Patent: February 12, 2013Assignee: LG Display Co. Ltd.Inventors: Sang-Hyun Lee, Dong-Hyeok Kim
-
Publication number: 20100309406Abstract: A backlight unit adapted to implement enhanced light efficiency and uniform brightness is disclosed. The backlight unit includes a plurality of light sources arranged at fixed intervals, a diffusion plate disposed on the plurality of light sources, prism patterns formed on one surface of the diffusion plate, and micro-lens patterns formed on the other surface of the diffusion plate. The vertex angle of each prism pattern is in a range of about 64°˜76°.Type: ApplicationFiled: December 16, 2009Publication date: December 9, 2010Inventors: Min Joo Kim, Dong Hyeok Kim, Jin Ryun Kim
-
Publication number: 20100157197Abstract: A backlight unit for a liquid crystal display device includes a reflection plate, first and second light guide plates over the reflection plate, the second light guide plate disposed between the first light guide plate and the reflection plate, wherein the first light guide plate includes first and second sections alternating with each other, and the second light guide plate includes third and fourth sections alternating with each other, the first and third sections having patterns at rear surfaces, the second and fourth sections excluding patterns, wherein the first section corresponds to the fourth section, and the second section corresponds to the third section, first and second light-emitting diode (LED) assemblies at opposite sides of the first and second light guide plates, each of the first and second LED assemblies including LEDs arranged in first and second lines, and a plurality of optical sheets over the first light guide plate, wherein the LEDs of the first lines of the first and second LED assembType: ApplicationFiled: December 21, 2009Publication date: June 24, 2010Inventors: Sang-Hyun Lee, Dong-Hyeok Kim