Patents by Inventor Chang Ryu

Chang Ryu 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: 20240155252
    Abstract: Disclosed is an electronic device which includes a dynamic vision sensor that includes a first pixel sensing a change in light intensity and generates an event signal based on the sensed change in light intensity, an illuminance estimator that estimates illuminance of a light, and a time delay compensator that calculates a time delay between a first time at which the change in light intensity occurs and a second time at which the first pixel senses the change in light intensity, based on the illuminance of the light, and to compensate for the time delay.
    Type: Application
    Filed: January 19, 2024
    Publication date: May 9, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Minwon SEO, Jeongseok KIM, Hyunsurk RYU, Yunjae SUH, Chang-Woo SHIN, Woonhee LEE
  • Patent number: 11973584
    Abstract: This application relates to a noise signal generating apparatus. In one aspect, the apparatus includes a bandwidth expansion unit configured to generate a noise signal having a second bandwidth by expanding a noise source signal having a first bandwidth to the second bandwidth that is greater than the first bandwidth. The apparatus may also include a randomization unit configured to perform randomization and output the generated noise signal having the second bandwidth.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: April 30, 2024
    Assignee: Agency for Defense Development
    Inventors: Jaewon Chang, Jeong Ho Ryu, Joo Rae Park, Young Ju Park, Byeong Nam Lee
  • Publication number: 20240136094
    Abstract: A magnetic core according to one embodiment of the present invention includes a material formed of iron (Fe)-silicon (Si)-boron (B), wherein a mass percentage of Fe in a first surface, which is an upper surface, is different from a mass percentage of Fe in a second surface which is a side surface, and a ratio of the mass percentage of Fe in the first surface to a difference between the mass percentage of Fe in the first surface and the mass percentage of Fe in the second surface is in the range of 6 to 21.
    Type: Application
    Filed: February 18, 2022
    Publication date: April 25, 2024
    Inventors: Seung Eun LEE, Ji Chang RYU, Jung Ki LEE
  • Patent number: 11958987
    Abstract: The present disclosure relates to a cover window for a flexible display device including a polymer substrate including a polyamide resin; and a hard coating layer formed on at least one surface of the polymer substrate, wherein a yellow index of the polymer substrate measured in accordance with STM E 313 is 4.00 or less, and an elastic modulus of the polymer substrate measured at a strain rate of 12.5 mm/min in accordance with ISO 527-3 is 4 to 9 GPa.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: April 16, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jin Young Park, Bi Oh Ryu, Young Ji Tae, Youngseok Park, Yongjoon Heo, Yeongrae Chang
  • Patent number: 11961956
    Abstract: A cylindrical secondary battery module includes: a plurality of cylindrical secondary battery cells respectively having a battery case in which an electrode assembly and an electrolyte are accommodated; a cell frame at which the plurality of cylindrical secondary battery cells are disposed; and a lid coupled to the cell frame and having a flame outlet. The cell frame includes: a plurality of plate members bent and coupled to intersect each other; and a space formed between the plurality of plate members so that the cylindrical secondary battery cells are disposed therein.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Ji-Su Yoon, Su-Chang Kim, Jae-Min Yoo, Jae-Uk Ryu, Dal-Mo Kang, Jeong-O Mun
  • Publication number: 20240104557
    Abstract: A method for transmitting specific data whose data format is unknown at a relay from a first blockchain network to a second blockchain network via the relay is provided. The method includes steps of: the relay (a) in response to detecting that a blockchain communication message for transmitting the specific data from the first blockchain network following a first data format to the second blockchain network following a second data format is generated, generating a relay message including the blockchain communication message and verification information; and (b) transmitting the relay message to the second blockchain network, thereby instructing the second blockchain network to (i) verify the relay message by using the verification information included in the relay message and (ii) convert the specific data included in the relay message into the second data format to generate converted specific data and then transmit the converted specific data to a receiving party.
    Type: Application
    Filed: September 15, 2023
    Publication date: March 28, 2024
    Applicant: PARAMETA Corp.
    Inventors: Jong Hyup KIM, Jae Chang NAMGOONG, Moon Kyu SONG, Hyeok Gon RYU
  • Patent number: 11926603
    Abstract: Disclosed are a compound represented by Chemical Formula 1, a composition comprising the same, an organic optoelectronic diode, and a display device. Chemical formula 1 is as defined in the specification.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: March 12, 2024
    Assignees: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD
    Inventors: Hanill Lee, Giwook Kang, Byungku Kim, Chang Ju Shin, Dongkyu Ryu, Eun Sun Yu, Kipo Jang
  • Publication number: 20240066154
    Abstract: The present invention provides iron oxide magnetic particles containing iron oxide and MXn, wherein M as a transition metal containing electrons in a 5d orbital on the periodic table includes one or more selected from the group consisting of Hf, Ta, W, Re, Os, Ir, Pt, Au, and Hg, X includes one or more selected from the group consisting of F, Cl, Br, and I, and n is an integer of 1 to 6.
    Type: Application
    Filed: December 28, 2021
    Publication date: February 29, 2024
    Applicant: ZTI BIOSCIENCES CO., LTD.
    Inventors: Hyungseok CHANG, Yong-Sun PARK, Ji-Young RYU
  • 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
  • Publication number: 20240019906
    Abstract: A display device includes a display panel including a first panel and a second panel, the first panel being located at one side of the second panel in a first direction, a support member configured to support a bottom surface of the display panel and assist in a sliding motion of the display panel in the first direction, and a filling member covered by the first panel and the support member at an end of the first panel in the first direction, where the first panel includes a first portion, a second portion, and a third portion, the first portion covering one surface of the support member and in contact, at least partially, with the other surface of the support member and extending in the first direction, the second portion being at least partially opposing the first portion and extending in a direction opposite the first direction.
    Type: Application
    Filed: June 22, 2023
    Publication date: January 18, 2024
    Inventor: Su Chang RYU
  • 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
  • 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
  • Publication number: 20230335540
    Abstract: A semiconductor package may include a package substrate, a first interposer substrate mounted on the package substrate, and a first semiconductor chip disposed on the first interposer substrate. The first interposer substrate may include a first base layer, a second base layer disposed on the first base layer, circuit patterns provided in each of the first base layer and the second base layer, and an integrated device embedded in the first base layer and connected to at least one of the circuit patterns. A top surface of the first base layer may contact a bottom surface of the second base layer.
    Type: Application
    Filed: June 21, 2023
    Publication date: October 19, 2023
    Inventors: YANGGYOO JUNG, CHULWOO KIM, HYO-CHANG RYU, YUN SEOK CHOI
  • Patent number: 11721679
    Abstract: A semiconductor package may include a package substrate, a first interposer substrate mounted on the package substrate, and a first semiconductor chip disposed on the first interposer substrate. The first interposer substrate may include a first base layer, a second base layer disposed on the first base layer, circuit patterns provided in each of the first base layer and the second base layer, and an integrated device embedded in the first base layer and connected to at least one of the circuit patterns. A top surface of the first base layer may contact a bottom surface of the second base layer.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: August 8, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yanggyoo Jung, Chulwoo Kim, Hyo-Chang Ryu, Yun Seok Choi
  • Patent number: 11670565
    Abstract: A semiconductor package includes a first substrate, a first chip structure and a second chip structure spaced apart from each other on the first substrate, a gap region being defined between the first and second chip structures, and a heat dissipation member covering the first chip structure, the second chip structure, and the first substrate, the heat dissipation member including a first trench in an inner top surface of the heat dissipation member, wherein the first trench vertically overlaps with the gap region and has a width greater than a width of the gap region, and wherein the first trench vertically overlaps with at least a portion of a top surface of the first chip structure or a portion of a top surface of the second chip structure.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: June 6, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyo-Chang Ryu, Chulwoo Kim, Juhyun Lyu, Sanghyun Lee, Yun Seok Choi
  • Publication number: 20230020109
    Abstract: A pharmaceutical composition and a health functional food composition for alleviating eye fatigue containing, as active ingredients, compounds, particularly, luteolin-7-O-diglucuronide and apigenin-7-O-diglucuronide isolated from a Perilla frutescens (L.) Britton var. acuta (Thunb.) Kudo leaf extract have an effect of alleviating eye fatigue by increasing the contents of NO and cGMP associated with relaxation of ciliary smooth muscle cells isolated from rat's eyes and decreasing the content of [Ca2+]i, and increasing cGMP which is a factor associated with relaxation of the ciliary smooth muscle through an animal experiment. As a result, the luteolin-7-O-diglucuronide and apigenin-7-O-diglucuronide compounds extracted from Perilla frutescens (L.) Britton var. acuta (Thunb.) Kudo may be usefully used as a pharmaceutical composition and a health functional food composition having an eye fatigue alleviating effect as a Korean natural resource.
    Type: Application
    Filed: September 12, 2022
    Publication date: January 19, 2023
    Inventors: Chul Yung CHOI, Jae Yong KIM, Hu Won KANG, Ara JO, Dool-Ri OH, Yu Jin KIM, So Jeong IM, Seul Gi LEE, Gyu Ok LEE, Sung Yoon PARK, Geun Chang RYU, Rack Seon SEONG
  • Publication number: 20220365141
    Abstract: Provided are a voltage sensing circuit, including a first sub-sensing circuit including a light emitting device, and electrically connected in parallel to a battery, and a second sub-sensing circuit including a light receiving device optically coupled to the light emitting device, and electrically isolated from the first sub-sensing circuit. The light emitting device is for generating an optical signal in response to a voltage across the light emitting device. The second sub-sensing circuit is for outputting a voltage sensing signal indicating a level of voltage across the battery in response to the optical signal. When the voltage across the battery is equal to a first reference voltage indicating an overvoltage state of the battery, a second reference voltage which is lower than the first reference voltage is applied across the light emitting device. The second reference voltage is lower than a threshold voltage of the light emitting device.
    Type: Application
    Filed: April 13, 2021
    Publication date: November 17, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Hong-Kyun KIM, Je-Chang RYU, Jong-Kwang SHIN, Ik-Jae LEE, Chang-Hun SUNG
  • Publication number: 20220348784
    Abstract: Provided is a method of preparing a vinyl chloride-vinyl acetate copolymer latex. Specifically, in one embodiment of the present invention, provided is a method of preparing a latex including vinyl chloride-vinyl acetate copolymer particles with a high degree of polymerization and molecular weight and a uniform particle composition by performing an emulsion polymerization of a vinyl chloride monomer and a vinyl acetate monomer in the presence of an aqueous dispersion medium and an emulsifier while optimizing a feeding mode of the vinyl chloride monomer and the emulsifier.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 3, 2022
    Inventors: Eun Soo JEONG, Geun Chang RYU, Chulwoong LEE
  • Publication number: 20220348703
    Abstract: Provided is a method of preparing a vinyl chloride-acrylic copolymer latex. Specifically, in one embodiment of the present invention, provided is a method of preparing a latex including vinyl chloride-acrylic copolymer particles with a high degree of polymerization and high molecular weight by performing an emulsion polymerization of a vinyl chloride monomer and an acrylic monomer in the presence of an aqueous dispersion medium and an emulsifier while optimizing a feeding mode of the monomers and the emulsifier.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 3, 2022
    Inventors: Eun Soo JEONG, Geun Chang RYU, Chulwoong Lee
  • Patent number: 11246219
    Abstract: A flexible printed circuit board including: a base film; an electrode pad disposed on one side of the base film; a circuit pattern connected with the electrode pad; a coverlay that overlaps at least a part of the circuit pattern; and a cover resin that overlaps the circuit pattern and at least a part of the coverlay. The coverlay includes a body portion and a protrusion protruded from the body portion.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: February 8, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: John Park, Seung-Woo Kang, Soon-Sung Park, Jun Ho Park, Yong Uk Song, Su Chang Ryu, Jung Soo Youn