Patents by Inventor Seok Chang

Seok Chang 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: 20240153655
    Abstract: According to an embodiment of the present invention, an emergency core cooling system (ECCS) valve provided between a reactor vessel of a system-integrated modular advanced reactor (SMART) and a small containment vessel formed to surround the reactor vessel so that a coolant is filled in a space between the reactor vessel and the small containment vessel in the event of a loss of coolant accident (LOCA) includes an outer shell connected to the reactor vessel and formed to protrude toward the small containment vessel and having a connector formed therein so as to communicatively connect an inside of the reactor vessel to an inside of the small containment vessel, an inner shell provided inside the outer shell at a preset distance from an inner wall of the outer shell, a piston movably constrained and inserted through a piston opening formed in the inner shell at a position facing the connector of the outer shell to open and close the connector, and a spring provided on an outer circumferential surface of the p
    Type: Application
    Filed: November 1, 2021
    Publication date: May 9, 2024
    Inventors: Soo Jai SHIN, Cheongbong CHANG, Seungyeob RYU, Han-Ok KANG, Young-In KIM, Ji Han CHUN, Sung Won LIM, Joo Hyung MOON, Hun Sik HAN, Seok KIM, Hyunjun CHO
  • Publication number: 20240145118
    Abstract: A transparent conductor according to an exemplary embodiment of the present invention includes a transparent substrate, and a transparent conductive pattern formed on the transparent substrate, and the transparent conductor includes a nanostructure on an upper surface of at least one of the transparent substrate and the transparent conductive pattern.
    Type: Application
    Filed: March 17, 2021
    Publication date: May 2, 2024
    Inventors: Dae-Guen CHOI, Hyuk Jun KANG, Ji Hye LEE, Junhyuk CHOI, Won Seok CHANG, Joo Yun JUNG, Jun-ho JEONG
  • Publication number: 20240146409
    Abstract: The present application relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence and a fourth scrambling sequence determined by the second short sequence; scrambling the short sequences with the respective scrambling sequences; and mapping the secondary synchronization signal that includes the first short sequence scrambled with the first scrambling sequence, the second short sequence scrambled with the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled by the second scrambling sequence and the fourth scrambling sequence to a frequency domain.
    Type: Application
    Filed: January 6, 2024
    Publication date: May 2, 2024
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok CHANG, Il Gyu KIM, Hyeong Geun PARK, Young Jo KO, Hyo Seok Yl, Chan Bok JEONG, Young Hoon KIM, Seung Chan BANG
  • Publication number: 20240137072
    Abstract: Disclosed are a method and an apparatus for supporting high-speed mobility in a communication. A method of a terminal may comprise: estimating a first frequency offset based on a downlink transmission received from a base station; estimating first time-varying characteristic information based on the downlink transmission; and transmitting, to the base station, a first uplink transmission including time-varying characteristic feedback information based on the first time-varying characteristic information and a configured time-varying characteristic information feedback condition.
    Type: Application
    Filed: October 23, 2023
    Publication date: April 25, 2024
    Inventors: Kap Seok CHANG, Yong Sun KIM, Jun Hyeong KIM
  • Publication number: 20240120904
    Abstract: A semiconductor device includes an on-die resistor circuit comprising an on-die resistor, a calibration circuit configured to perform a calibration operation on the on-die resistor, and a calibration control circuit configured to control the calibration operation of the calibration circuit. The calibration circuit includes a current generating circuit configured to supply a calibration current to the on-die resistor and a comparing circuit configured to compare the magnitude of a first input signal that is generated by the calibration current and the on-die resistor with a magnitude of a second input signal that is generated by the calibration current and an external resistor.
    Type: Application
    Filed: February 15, 2023
    Publication date: April 11, 2024
    Applicant: SK hynix Inc.
    Inventors: Dong Seok KIM, Joo Won OH, Keun Jin CHANG
  • Patent number: 11955943
    Abstract: A semiconductor device includes an on-die resistor circuit comprising an on-die resistor, a calibration circuit configured to perform a calibration operation on the on-die resistor, and a calibration control circuit configured to control the calibration operation of the calibration circuit. The calibration circuit includes a current generating circuit configured to supply a calibration current to the on-die resistor and a comparing circuit configured to compare the magnitude of a first input signal that is generated by the calibration current and the on-die resistor with a magnitude of a second input signal that is generated by the calibration current and an external resistor.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: April 9, 2024
    Assignee: SK hynix Inc.
    Inventors: Dong Seok Kim, Joo Won Oh, Keun Jin Chang
  • Publication number: 20240112975
    Abstract: In one example, an electronic device includes a substrate including a substrate first side, a conductive structure, and a substrate sidewall on the substrate first side. The substrate sidewall forms a perimeter, the substrate first side within the perimeter defines a substrate base, and the substrate sidewall and the substrate base form a substrate cavity. An electronic component includes a component first side, a component second side, and a component lateral side. The electronic component is disposed over a first portion of the substrate base within the substrate cavity and is coupled to the conductive structure. An encapsulant encapsulates at least a portion of the component lateral side, and a lid is over at least a portion of the component first side. At least a portion of the component first side is devoid of the encapsulant. Other examples and related methods are also disclosed herein.
    Type: Application
    Filed: October 3, 2022
    Publication date: April 4, 2024
    Applicant: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Kwang Seok PARK, Won Bae BANG, Seo Yoon CHANG
  • Publication number: 20240114709
    Abstract: The quantum dot comprises a ligand which is a copolymer comprising a first repeating unit comprising at least one or more hole transporting functional groups and a second repeating unit comprising at least one or more photocrosslinking functional groups.
    Type: Application
    Filed: September 22, 2020
    Publication date: April 4, 2024
    Applicants: LG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Joona BANG, Ki Seok CHANG, Jeong Min MOON, Soon Shin JUNG, Dong Hoon CHOI, Hyung Jong KIM, Jae Wan KO
  • Patent number: 11943643
    Abstract: An access point (AP) and a station (STA) communicate with each other, with the AP indicating to the STA either or both of a preamble detection (PD) channel and a signaling (SIG) content channel and with the STA being initially monitoring a primary frequency segment of a plurality of frequency segments in an operating bandwidth of the AP. A downlink (DL) or triggered uplink (UL) communication is performed between the AP and the STA during a transmission opportunity (TXOP) such that: (i) during the TXOP, the STA monitors a preamble on the PD channel and decodes a SIG content on the SIG content channel; and (ii) after an end of the TXOP, the STA switches to the primary frequency segment.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: March 26, 2024
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kai Ying Lu, Yongho Seok, Hung-Tao Hsieh, Cheng-Yi Chang, James Chih-Shi Yee, Jianhan Liu, Po-Yuen Cheng
  • Publication number: 20240075724
    Abstract: Disclosed is a dental orthodontic sheet having a composite structure in which different materials are stacked and bound to each other. The composite structure dental orthodontic sheet includes a first sheet layer, a second sheet layer, and an intermediate sheet layer formed between the first sheet layer and the second sheet layer, wherein the intermediate sheet layer includes a mat portion made of a softer material than each of the first sheet layer and the second sheet layer, the mat portion being formed so as to have a mesh structure, and a binding portion configured to allow mesh holes of the mat portion to be filled with materials of the first sheet layer and the second sheet layer such that the first sheet layer and the second sheet layer are bound to each other.
    Type: Application
    Filed: May 30, 2023
    Publication date: March 7, 2024
    Applicant: DENTIS CO., LTD.
    Inventors: Gi Bong SIM, Hee Seok PARK, Byeong Il KIM, Eun Yeong PARK, Won Gun CHANG
  • Patent number: 11911157
    Abstract: Provided is an apparatus for estimating a target component, the apparatus including a temperature controller configured to modulate temperature of an object, a measurer configured to measure a spectrum for each temperature of the object that changes based on the modulation, and a processor configured to obtain effective optical pathlength vectors corresponding to a temperature change based on the spectrum for each temperature of the object, obtain a representative effective optical pathlength based on the obtained effective optical pathlength vectors, and obtain a target component estimation model based on the obtained representative effective optical pathlength.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: February 27, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeong Seok Jang, Sung Hyun Nam, Sung Mo Ahn, Jun Ho Lee, Ho Jun Chang
  • Patent number: 11888774
    Abstract: An operation method of a transmitter in a communication system may comprise: configuring a first reference signal region for transmission of a first reference signal in the delay-Doppler domain; arranging the first reference signal having a sequence form in a specific region within the first reference signal region; transforming a delay-Doppler domain signal including the first reference signal into a time domain signal; and transmitting the time domain signal to a receiver.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: January 30, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyeong Pyo Kim, Woo Ram Shin, Young Jo Ko, Kap Seok Chang
  • Patent number: 11877732
    Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection. Additional fibers may be placed in the inner stylet to measure temperature and to measure deflection.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: January 23, 2024
    Assignee: Intelligent Fiber Optic Systems Corporation
    Inventors: Seok Chang Ryu, Mark Cutkosky, Richard J. Black, Joannes Mario Costa, Behzad Moslehi, Fereydoun Faridian, Levy Oblea, Vahid Sotoudeh
  • Patent number: 11870546
    Abstract: The present application relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence and a fourth scrambling sequence determined by the second short sequence; scrambling the short sequences with the respective scrambling sequences; and mapping the secondary synchronization signal that includes the first short sequence scrambled with the first scrambling sequence, the second short sequence scrambled with the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled by the second scrambling sequence and the fourth scrambling sequence to a frequency domain.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: January 9, 2024
    Assignee: Electronics and Telecommunications Research Inst.
    Inventors: Kap Seok Chang, Il Gyu Kim, Hyeong Geun Park, Young Jo Ko, Hyo Seok Yi, Chan Bok Jeong, Young Hoon Kim, Seung Chan Bang
  • Patent number: 11848410
    Abstract: Disclosed is a battery cell, which includes an electrode assembly, a pair of electrode leads electrically connected to the electrode assembly, a battery case configured to accommodate the electrode assembly and expose a portion of the pair of electrode leads to the outside, an electrolyte injection hole formed in the battery case and connectable to an electrolyte injecting device that injects an electrolyte in a vacuum state so that the electrolyte is injected into the battery case, and an injection hole cap configured to cover the electrolyte injection hole and mounted to the electrolyte injection hole so as to be detachable from the electrolyte injection hole by user manipulation.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: December 19, 2023
    Inventors: Sung-Ryul Park, Won-Seok Chang
  • Publication number: 20230398680
    Abstract: Systems and methods for controlling end-effectors. In some examples, a system includes a finger-tracking system configured for tracking one or more fingers of an operator and controlling movement of the end effector based on tracking the one or more fingers. The system includes a sensor configured for measuring a distance between the end effector and a target object in an environment of the end effector. The system includes a feedback system configured for electrically stimulating at least one of the one or more fingers of the operator with an electrical pulse having a frequency based on the distance between the end effector and the target object.
    Type: Application
    Filed: November 8, 2021
    Publication date: December 14, 2023
    Inventors: Hangue Park, Seok Chang Ryu, Saurabh Biswas
  • Publication number: 20230396293
    Abstract: A method of a transmitting node may comprise: modulating a codeword corresponding to data to be transmitted; generating sparse space-frequency block code (SSFBC)-coded symbols by encoding the modulated codeword in an SSFBC scheme; performing precoding on the SSFBC-coded symbols for each of subbands respectively corresponding to transmit antenna groups; and transmit the precoded SSFBC-coded symbols by performing beamforming on the precoded SSFBC-coded symbols using at least one array antenna group among two or more array antenna groups.
    Type: Application
    Filed: June 2, 2023
    Publication date: December 7, 2023
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Chan ho YOON, Young Jo KO, Kap Seok CHANG, Won Cheol CHO
  • Publication number: 20230387457
    Abstract: A method of manufacturing a lithium solid electrolyte, the method including: providing a composition including a lithium precursor, a lanthanum precursor, and a zirconium precursor; disposing the composition on a substrate having a temperature of 270° C. to 500° C. to form a film; and heat-treating the film at 300° C. to less than 750° C. for 1 hour to 100 hours to manufacture the lithium solid electrolyte.
    Type: Application
    Filed: July 28, 2023
    Publication date: November 30, 2023
    Inventors: Yuntong Zhu, Won Seok Chang, Jennifer Rupp, Lincoln Miara
  • Publication number: 20230361338
    Abstract: An electrochemical cell and a method of manufacturing the electrochemical cell are provided. The method includes: spraying a precursor solution on an anode, the precursor solution including a metal salt dissolved in a solvent and the anode being at a temperature of 250° C. or greater; reacting the metal salt on the anode to form a buffer layer; and attaching a solid-state electrolyte to the buffer layer.
    Type: Application
    Filed: May 16, 2022
    Publication date: November 9, 2023
    Inventors: Andrea Maurano, Jesse John Hinricher, So Yeon Kim, Jennifer Lilia Marguerite Rupp, Ju Li, Yuntong Zhu, Hyunwon Chu, Zachary David Hood, Won Seok Chang, Kai Pei, Yimeng Huang, Srinath Chakravarthy, Ziqiang Wang
  • Patent number: 11801362
    Abstract: Embodiments disclosed herein are directed to surgical cannulas and methods relating thereto. In some embodiments, a method includes cutting one or more lines in a tubular member to form a tubular body and a hinge of a surgical cannula. In some embodiments, a surgical cannula includes a fiber brag grating (FBG) reflector mounted to a tendon for deflecting a distal tip of the surgical cannula. A controller is coupled to the FBG reflector and is configured to determine a tension in the tendon based on reflected light from the FBG reflector. In some embodiments, a surgical cannula includes a tubular body including a plurality of apertures extending therethrough.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: October 31, 2023
    Assignee: THE TEXAS A&M UNIVERSITY SYSTEM
    Inventors: Seok Chang Ryu, Rohith Karthikeyan, Shivanand Pattanshetti