Patents by Inventor Hyun A Choi

Hyun A 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: 20240188424
    Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.
    Type: Application
    Filed: October 13, 2023
    Publication date: June 6, 2024
    Inventors: Su-Hyun LEE, Kyung-Hoon CHOI, So-Young JUNG, Chi-Sik KIM, Soo-Yong LEE, Sang-Hee CHO, Young-Jun CHO, Young-Gil KIM, Bitnari KIM, Young-Jae KIM, Hyo-Nim SHIN
  • Publication number: 20240183738
    Abstract: Proposed is a leak detection sensor module including. The leak detection sensor module includes a body having an inner space in which a substrate, a transmission member, and a fixing body are mounted, the body having a bottom surface provided with a mounting hole in which a cartridge is mounted, the body having a side surface provided with a connection hole, and the body having steps. Furthermore, the leak detection sensor module includes a cover, the substrate to which an emitting portion and a receiving portion are connected and in which a microcomputer is mounted, the cartridge maintaining an opaque state when oil is not absorbed and being converted to a transparent or translucent state when the cartridge absorbs and reacts with a leaked oil, the transmission member transmitting an emitted light, and the fixing body fixing the substrate, the transmission member, the emitting portion, and the receiving portion.
    Type: Application
    Filed: July 28, 2023
    Publication date: June 6, 2024
    Inventors: Ji Hyeon HEO, Sang Hyun CHOI
  • Publication number: 20240182872
    Abstract: The present disclosure relates to a citrate synthase variant, a microorganism comprising the variant, and a method for producing L-amino acids using the microorganism.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 6, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Jin Sook CHANG, Ju-yeon KIM, Seon Hye KIM, Sun Hyoung CHOI, Byoung Hoon YOON, Hyung Joon KIM, Seung Hyun CHO, Jaemin LEE, Seo-Yun KIM, Imsang LEE
  • Publication number: 20240183742
    Abstract: Proposed is a cartridge for a leak detection sensor. The cartridge includes a housing having an inner side thereof provided with a mounting space portion in which a reaction material is mounted, the housing having a plurality of fluid moving grooves in which a leaked oil is capable of being moved toward the reaction material and which is formed around an opening portion of a lower portion of the housing by a predetermined distance. Furthermore, the cartridge includes the reaction material being an opaque material, the reaction material being configured to be converted to a transparent state when the reaction material absorbs oil and reacts with an absorbed oil, and includes a separation prevention plate mounted by being fitted into the opening portion of the housing, the separation prevention plate preventing a separation of the reaction material that is mounted by being fitted into the fluid moving grooves.
    Type: Application
    Filed: July 28, 2023
    Publication date: June 6, 2024
    Inventors: Ji Hyeon HEO, Sang Hyun CHOI
  • Patent number: 12000927
    Abstract: A vehicle control system may include a controller that detects an object outside a vehicle, calculates an angle based on a ratio of a relative speed between the object and the vehicle to a speed of the vehicle, and updates a phase curve reflecting a phase distortion of an input signal based on the calculated angle.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: June 4, 2024
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventors: Won Jong Choi, Seok Hyun Kang, Young Hoon Kim
  • Patent number: 12003753
    Abstract: The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: June 4, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Dong San Jun, Jong Ho Kim, Ha Hyun Lee, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
  • Patent number: 11998648
    Abstract: A sterilization module includes a main body having an opening on the top surface thereof, a transparent member which is arranged on the inside of the main body so as to cover the opening, and through which light passes, an inner sealing member which is made of an elastic material and which covers the side surface of the transparent member, a light emitting module that comprises a substrate and a light emitting element installed on the upper surface of the substrate, and which emits light through the transparent member, and an inner holder which is fastened to the inner side surface of the main body and fixes the light emitting module to the inside of the main body.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: June 4, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Woong Ki Jung, Ji Hyun Jo, Byeong Cheol Ju, Jae Young Choi
  • Patent number: 12003707
    Abstract: Disclosed herein is an intra prediction method including: deriving neighbor prediction mode information from a left neighbor prediction mode and an upper neighbor prediction mode; deriving an intra prediction mode for a decoding target unit by using the derived neighbor prediction mode information; and performing intra prediction on the decoding target unit based on the intra prediction mode. According to exemplary embodiments of the present invention, image encoding/decoding efficiency can be improved.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: June 4, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ha Hyun Lee, Hui Yong Kim, Sung Chang Lim, Jong Ho Kim, Jin Ho Lee, Se Yoon Jeong, Suk Hee Cho, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn
  • Patent number: 11999354
    Abstract: The present invention relates to a method and apparatus for estimating a road surface type by using an ultrasonic signal and, more particularly, to a method for estimating a road surface type by using an artificial neural network model machine-learned with respect to a reflected ultrasonic signal and an apparatus for performing same. According to the present invention, provided are a method and apparatus for providing highly accurate road surface information at low cost, by machine-learning both characteristics of an ultrasonic signal reflected from a road surface and a road surface state, establishing a model between the two, and then estimating the type of the road surface by utilizing the model. In particular, even a road surface where thin ice, that is, black ice, is formed, which was not detectable in the conventional method for estimating a road-surface friction coefficient, may be accurately estimated, thereby contributing to safer driving.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: June 4, 2024
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sei-Bum Choi, Min-Hyun Kim, Jin-Rak Park, Seung-In Shin, Jong-Chan Park
  • Publication number: 20240179964
    Abstract: A display device comprises a substrate; a driving transistor including a first active layer and a switching transistor including a second active layer, the first active layer and the second active layer being disposed on the substrate; a first gate insulating layer disposed on the first active layer of the driving transistor and the second active layer of the switching transistor; first and second gate electrodes disposed on the first gate insulating layer to overlap the first active layer of the driving transistor and the second active layer of the switching transistor, respectively; a first interlayer insulating layer disposed on the first gate electrode and the second gate electrode; and a second interlayer insulating layer disposed on the first interlayer insulating layer to overlap the first active layer without overlapping the second active layer in a plan view.
    Type: Application
    Filed: February 7, 2024
    Publication date: May 30, 2024
    Inventors: Sang Woo SOHN, Saeroonter OH, Joon Seok PARK, Young Joon CHOI, Su Hyun KIM, Jun Hyung LIM
  • Publication number: 20240178626
    Abstract: Disclosed is a USB adapter for a vehicle that can effectively dissipate heat generated during power supply and data transmission. The USB adapter includes a casing installed at a center fascia or a console box of the vehicle, wherein one surface of the casing is open; a printed circuit board received inside the casing, wherein a USB port is mounted at one end of the printed circuit board and a receptacle is mounted at the other end of the printed circuit board; and a heat dissipation member configured to transfer heat generated during power supply and data transmission to the casing, such that the casing dissipates the heat out of the USB adapter.
    Type: Application
    Filed: November 28, 2023
    Publication date: May 30, 2024
    Inventors: Eui-Dong Roh, Wook-Hyun Choi, Tae-Yong Kim, Seung-Min Han, Chan-Gu Yun
  • Publication number: 20240179893
    Abstract: A semiconductor device includes a substrate that includes an element separation film, an active region defined by the element separation film and arranged in a first direction, and a trench positioned across the active region and the element separation film, a bit line contact that is positioned within the trench and is connected to the active region, a bit line structure that is connected to the substrate through the bit line contact and that extends in a second direction different from the first direction across the active region, and a first contact spacer, a second contact spacer, and a third contact spacer within the trench and around the bit line contact, the first contact spacer being continuous within the trench, and each of the second contact spacer and the third contact spacer being separated into at least two discrete parts within the trench.
    Type: Application
    Filed: June 30, 2023
    Publication date: May 30, 2024
    Inventors: Sangkyu SUN, Hyunyong KIM, Hyun-Jung KIM, Junhee PARK, Kyuwon WOO, Jiwon OH, Yoonyoung CHOI
  • Patent number: 11994119
    Abstract: A compressor including: a casing; a rotary shaft rotatably mounted in the casing; a compression mechanism configured to compress a refrigerant by operating in conjunction with the rotary shaft; a thrust plate configured to support an end surface of the rotary shaft; a chamber configured to accommodate the thrust plate; and a slit configured to guide oil to the chamber, in which a part of the slit is formed to face a contact portion between the rotary shaft and the thrust plate, such that it is possible to supply the oil between the rotary shaft and the thrust plate, thereby preventing damage to the thrust plate for supporting the rotary shaft. In addition, an inner diameter of the chamber gradually increases, and the chamber extends to an end surface of a cylinder block, such that the cylinder block may be easily extracted from a mold.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: May 28, 2024
    Assignee: HANON SYSTEMS
    Inventors: Kwang Jin Kim, Ok Hyun Kim, Seyoung Song, Jun Sig Choi
  • Patent number: 11993884
    Abstract: A washing machine of the present disclosure includes a rotating tub configured to receive laundry, a motor configured to apply a driving force to the rotating tub, a detector configured to detect electrical signal of the motor; a controller configured to receive the electrical signal detected by the detector for a predetermined time when the speed of the motor during a dehydration stroke is a predetermined speed, obtain an average value of the electrical signal received during the predetermined time, check a ripple value in the received electrical signal, obtain an eccentric value corresponding to the obtained average value and the ripple value, and control an operation of the motor to stop or maintain the dehydration stroke based on the obtained eccentric value and a driver configured to drive the motor in respond to a control command of the controller.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: May 28, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Mo Lee, Jun Hyun Park, Jung Chul Choi
  • Patent number: 11994173
    Abstract: A clutch pack system for transmission includes a push rod assembly, a clutch piston configured to transfer pressure received from the push rod assembly, a clutch friction plate configured to transfer pressure received from the clutch piston, and an outer hub connected to an outer drum by pressure from the clutch friction plate.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: May 28, 2024
    Assignee: NEOOTO CO., LTD.
    Inventors: Duk Soon Choi, Sun Hyun Kim
  • Publication number: 20240167711
    Abstract: The simulation system for predicting heating and cooling loads of a building comprises the collection unit collecting measurement data of a target building from a BEMS, the identification unit identifying indoor and outdoor temperature, humidity, and insolation measured in the building in real time based on RTS method, the correlation derivation unit deriving a correlation between energy usage based on the BEMS measurement data collected by the collection unit and the cooling and heating loads according to indoor and outdoor temperature, humidity, and insolation identified by the identification unit, the simulation unit predicting a change in cooling and heating loads according to a change in at least one of pieces of measurement data based on the correlation derived from the correlation derivation unit to perform a simulation, and the information provision unit providing a simulation result from the simulation unit in a visible form to a user terminal.
    Type: Application
    Filed: September 19, 2023
    Publication date: May 23, 2024
    Inventors: Tae Dong LEE, Won Jang PARK, Min Ho CHOI, Soo Hyun YANG, Moo Kyung SEO, Han Sung CHOI, Hye Mi LIM, Ji Hun PARK, So Jeong PARK, Ki Bum HAN, Hyeong Jae JEON
  • Publication number: 20240171866
    Abstract: An image processing device includes a memory for storing reference color ratios and crosstalk values of each of light source images acquired by sensing light sources having different wavelengths. The image processing device also includes a processor for receiving an image including a plurality of regions each including outer pixel values and inner pixel values of the same color, and correcting the outer pixel values or the inner pixel values by using difference values between the respective reference color ratios and a color ratio of the image as weights of the crosstalk values.
    Type: Application
    Filed: April 10, 2023
    Publication date: May 23, 2024
    Applicant: SK hynix Inc.
    Inventors: Jun Hyeok CHOI, Dae Hyun LEE
  • Publication number: 20240172493
    Abstract: An organic light emitting display device, in which a silicon semiconductor pattern is formed on a buffer layer, and light shielding patterns of a pixel driving thin film transistor and a switching thin film transistor are then formed in the same process by processing portions of the silicon semiconductor pattern such that the portions of the silicon semiconductor pattern have conductivity, is disclosed. In a procedure of forming the silicon semiconductor pattern for formation of the light shielding patterns, a silicon semiconductor pattern, which is disposed under a gate driving thin film transistor, may be formed simultaneously with the former silicon semiconductor pattern, without using an additional silicon semiconductor pattern formation procedure. Accordingly, stack structures, planar design, and processes are simplified and, as such, there are effects of preventing failure occurring due to processes while reducing tact time and costs.
    Type: Application
    Filed: September 22, 2023
    Publication date: May 23, 2024
    Inventors: Young Hyun KO, Ju Heyuck BAECK, Do Hyung LEE, Hong Rak CHOI, Chan Yong JEONG
  • Publication number: 20240165589
    Abstract: Disclosed herein is a catalyst for an upgrading reaction of biomass pyrolysis oil, a method for preparing the same, and a method for upgrading biomass pyrolysis oil using the same. The catalyst is a composite inorganic oxide, and the composite inorganic oxide includes lanthanum, nickel, titanium, and cerium. When a metal catalyst supported on carbon is used as a catalyst for a first step reaction, by using the catalyst as a catalyst for a second step reaction, the efficiency of the upgrading reaction of bio-oil is increased and a continuous reaction is possible without clogging of a continuous reactor.
    Type: Application
    Filed: December 27, 2022
    Publication date: May 23, 2024
    Inventors: Chunjae YOO, Jeong-Myeong HA, Dong Jin SUH, Jae Wook CHOI, Young Hyun YOON, Kyeongsu KIM, Chang Soo KIM, Kwang Ho KIM, Thi Lien DO, Jong Hyun LEE, Jin A EUN
  • Patent number: D1028714
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: May 28, 2024
    Assignee: Kolmar Korea Co., Ltd.
    Inventors: Chang Soo Yi, Jong Hyun Park, Hye Jin Jung, Sung Moo Choi