Patents by Inventor Kyu-Jin Cho

Kyu-Jin Cho 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: 10924062
    Abstract: A power amplifying apparatus includes a first bias circuit configured to generate a first bias current by adding a boost current to a base bias current generated from a reference current, a first amplification circuit configured to receive the first bias current and amplify a signal input through an input terminal of the first amplification unit to output a first amplified signal, and a bias boosting circuit configured to generate the boost current, based on a magnitude of a harmonic component in the amplified signal output from the first amplification circuit.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: February 16, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kyu Jin Choi, Jae Hyouck Choi, Je Hee Cho
  • Publication number: 20210045109
    Abstract: The present disclosure relates to a wireless battery management system, and more particularly, to a wireless battery management system, a node for wireless communication, and a method of transmitting data, which ensure stability and efficiency when obtaining battery data through wireless communication. A wireless battery management system includes a manager node obtaining battery data from a plurality of monitor nodes by using a first channel and a second channel which are communication channels based on wireless communication, a first monitor node collecting first battery data and transmitting the first battery data to the manager node through the first channel during a first dedicated slot, and a second monitor node collecting second battery data and transmitting the second battery data to the manager node through the second channel during the first dedicated slot.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 11, 2021
    Inventors: Hee Jin LEE, Ki Suk CHO, Kyu Ho KIM, Yong Ju SEON, Jong Chan KIM
  • Publication number: 20210028109
    Abstract: A semiconductor device includes a substrate including a first cell region, a second cell region adjacent to the first cell region in a first direction, and a comparison region adjacent the first and second cell regions in a second direction, a bit line in a first metal level on the substrate and extending in the first direction, and a first ground rail in a second metal level different from the first metal level. The first ground rail comprises a first sub-ground rail extending in the second direction on the first cell region, a second sub-ground rail extending in the second direction on the second cell region, a third sub-ground rail connecting the first sub-ground rail to the second sub-ground rail on the first and second cell regions, and a fourth sub-ground rail that branches off from the third sub-ground rail and extends in the second direction.
    Type: Application
    Filed: March 31, 2020
    Publication date: January 28, 2021
    Inventors: Suk Youn, Chan Ho Lee, Uk Rae Cho, Woo jin Jung, Kyu Won Choi
  • Patent number: 10903975
    Abstract: An apparatus and method for performing an operation which are secure against side-channel attack are provided. According to one embodiment of the present disclosure, the apparatus includes a first extractor configured to extract one or more first parameter candidate values corresponding to a seed value from a first parameter candidate value set, a first outputter configured to output a first output values using the extracted first parameter candidate values, a second extractor configured to extract one or more second parameter candidate values corresponding to the seed value from a second parameter candidate value set, and a second outputter configured to output a second output value using the extracted second parameter candidate values wherein the second output value is capable of being generated using the first output value.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: January 26, 2021
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Kyu-Young Choi, Duk-Jae Moon, Hyo-Jin Yoon, Ji-Hoon Cho
  • Publication number: 20210020735
    Abstract: A semiconductor device including a switching element on a substrate, a pad isolation layer on the switching element, a conductive pad passing through the pad isolation layer and connected to the switching element, an insulating pattern on the pad isolation layer and having a height greater than a horizontal width, a lower electrode on side surfaces of the insulating pattern on side surfaces of the insulating pattern and in contact with the conductive pad, a capacitor dielectric layer on the lower electrode and having a monocrystalline dielectric layer and a polycrystalline dielectric layer, the monocrystalline dielectric layer being relatively close to side surfaces of the insulating pattern compared to the polycrystalline dielectric layer an upper electrode on the capacitor dielectric layer may be provided.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 21, 2021
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang Yeol KANG, Kyu Ho CHO, Han Jin LIM, Cheol Seong HWANG
  • Patent number: 10892719
    Abstract: A multistage power amplifier comprises a first amplification circuit which receives a first bias current; a second amplification circuit which receives a second bias current; an envelope detection circuit which outputs a direct current (DC) detection voltage based on an envelope of an input radio frequency (RF) signal; and a bias compensation circuit which compensates for the first bias current based on the second bias current in response to the DC detection voltage.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: January 12, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kyu Jin Choi, Je Hee Cho
  • Publication number: 20200403174
    Abstract: The present disclosure provides a quantum dot (QD) light emitting diode including: a first electrode; a second electrode facing the first electrode; a QD emitting material layer positioned between the first electrode and the second electrode and including a QD and an organic material; a hole auxiliary layer positioned between the first electrode and the QD emitting material layer; and an electron auxiliary layer positioned between the QD emitting material layer and the second electrode, wherein the organic material has a highest occupied molecular orbital (HOMO) level higher than a material of the hole auxiliary layer.
    Type: Application
    Filed: June 23, 2020
    Publication date: December 24, 2020
    Applicants: LG DISPLAY CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Kyu-Nam KIM, Duk-Young JEON, Hyun-Jin CHO, Sun-Joong PARK
  • Publication number: 20200396688
    Abstract: The present disclosure relates to a wireless battery management system which ensures stability when obtaining battery data through wireless communication. The battery management system includes a manager node operating a primary channel and a secondary channel based on wireless communication and obtaining battery data from a monitor node by using the primary channel or the secondary channel and a monitor node connected to a battery module to collect battery data including one or more of a current, a voltage, a temperature, and self-diagnosis data of the battery module, transmit the collected battery data to the manager node through the primary channel, and when the transmission of the battery data through the primary channel fails, transmit the battery data to the manager node through the secondary channel.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 17, 2020
    Inventors: Ju Pyo HONG, Ki Suk CHO, Heung Lyeol LEE, Kyu Ho KIM, Seung Jun CHOI, Deog Soo KIM, Yong Ju SEON, Hee Jin LEE, Young Ho SEO, Jong Chan KIM
  • Patent number: 10854864
    Abstract: Provided are a separator for a lithium secondary battery and a lithium secondary battery comprising the same. The separator for a lithium secondary battery includes: a porous substrate; and a coating layer disposed on one side or both sides of the porous substrate and including a first inorganic particle and a second inorganic particle having different lengths of a major axis, and a binder, wherein a moisture content is less than 800 ppm after being left for 12 hours at a temperature of 40° C. and relative humidity of 90%.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: December 1, 2020
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Yun Bong Kim, Won Sub Kwack, Hye Jin Kim, Su Ji Lee, Kyu Young Cho
  • Patent number: 10854863
    Abstract: Provided is a separator for a secondary battery including: a porous substrate; and a coating layer formed on the porous substrate, wherein the coating layer includes a plurality of inorganic particles and a binder for binding the plurality of inorganic particles, and the binder includes a copolymer of a monomer mixture including an acrylamide-based monomer, a vinyl cyanide monomer, and an acrylic monomer having a carboxyl group.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: December 1, 2020
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Yun Bong Kim, Su Ji Lee, Kyu Young Cho, Won Sub Kwack, Hye Jin Kim
  • Publication number: 20200368820
    Abstract: Disclosed are a method of manufacturing a uranium target, the method including (a) a step of preparing a conjugate including a matrix and a uranium target green compact formed in the matrix; and (b) a step of performing thermo-mechanical treatment through additional heat treatment at 530° C. to 600° C. during a hot rolling pass in a process of hot-rolling the conjugate, and a method of extracting radioactive Mo-99 using the uranium target.
    Type: Application
    Filed: January 27, 2020
    Publication date: November 26, 2020
    Applicant: Korea Atomic Energy Research Institute
    Inventors: Ki Nam KIM, Sung Chan PARK, Yong Jin JEONG, Kyu Hong LEE, Sung Hwan KIM, Tae Won CHO, Jong Man PARK
  • Publication number: 20200373538
    Abstract: The present invention relates to: a porous composite separator for a secondary battery including a porous substrate, and a coating layer formed on the porous substrate, wherein the coating layer has a plurality of inorganic particles, which are connected and fixed by a composite binder including a particulate polymer binder and an interpenetrating polymer network (IPN)-type binder having no melting point and having a thermal decomposition temperature of 300° C. or higher; and a lithium secondary battery including the same.
    Type: Application
    Filed: December 4, 2018
    Publication date: November 26, 2020
    Inventors: Hye Jin Kim, Yun Bong Kim, Suji Lee, Won Sub Kwack, Kyu Young Cho
  • Publication number: 20200358604
    Abstract: An apparatus for sharing data according to one embodiment includes a first combined data generator configured to generate first combined data by combining target data to be shared and a random bit string, a data encryptor configured to generate a ciphertext for the first combined data, a key encryptor configured to generate one or more ciphertexts for a decryption key of the ciphertext for the first combined data using one or more public keys, a second combined data generator configured to generate second combined data by combining the ciphertext for the first combined data, the one or more ciphertexts for the decryption key, and the random bit string, and a data discloser configured to disclose the second combined data to one or more entities to share the target data to be shared.
    Type: Application
    Filed: October 26, 2019
    Publication date: November 12, 2020
    Inventors: Kyu-Young CHOI, Hyo-Jin YOON, Min-Kang Song, Seo-Yeon Park, Ji-Hoon CHO
  • Patent number: 10825889
    Abstract: A semiconductor device including a switching element on a substrate, a pad isolation layer on the switching element, a conductive pad passing through the pad isolation layer and connected to the switching element, an insulating pattern on the pad isolation layer and having a height greater than a horizontal width, a lower electrode on side surfaces of the insulating pattern on side surfaces of the insulating pattern and in contact with the conductive pad, a capacitor dielectric layer on the lower electrode and having a monocrystalline dielectric layer and a polycrystalline dielectric layer, the monocrystalline dielectric layer being relatively close to side surfaces of the insulating pattern compared to the polycrystalline dielectric layer an upper electrode on the capacitor dielectric layer may be provided.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: November 3, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang Yeol Kang, Kyu Ho Cho, Han Jin Lim, Cheol Seong Hwang
  • Publication number: 20200336115
    Abstract: A bias circuit includes a current generating circuit generating a first compensation current and a second compensation current, in which an ambient temperature change is reflected, based on a reference current, a first temperature compensation circuit generating a first base bias current, based on the first compensation current, to output the first base bias current to a base node of an amplifying circuit, and a second temperature compensation circuit generating a second base bias current, based on the second compensation current, to output the second base bias current to the base node of the amplifying circuit.
    Type: Application
    Filed: August 27, 2019
    Publication date: October 22, 2020
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kyu Jin CHOI, Je Hee CHO
  • Publication number: 20200336116
    Abstract: A bias circuit includes a current generating circuit generating an internal base current based on a reference current, a bias output circuit generating a base bias current based on the internal base current and outputting the base bias current to an amplifying circuit, and a temperature compensation circuit regulating the base bias current based on a temperature voltage reflecting a change in ambient temperature.
    Type: Application
    Filed: August 7, 2019
    Publication date: October 22, 2020
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kyu Jin CHOI, Je Hee CHO
  • Patent number: 10812260
    Abstract: An apparatus and method for performing operation being secure against side channel attack are provided. The apparatus and method generate values equal to values obtained through an exponentiation operation or a scalar multiplication operation of a point using values extracted from previously generated parameter candidate value sets and an operation secure against side-channel attack, thereby improving security against side-channel attack without degrading performance.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: October 20, 2020
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Kyu-Young Choi, Duk-Jae Moon, Hyo-Jin Yoon, Ji-Hoon Cho
  • Publication number: 20200324402
    Abstract: The inventive concept relates to a wearable hand robot mounted on a finger to bend the finger by an external force transmitted through a wire.
    Type: Application
    Filed: May 22, 2020
    Publication date: October 15, 2020
    Applicant: REPUBLIC OF KOREA (NATIONAL REHABILITATION CENTER)
    Inventors: Sung Jun ROH, Byeong Geol PARK, Hyo Seok YI, Kyu Jin CHO, Brian Byunghyun KANG, Hyung Min CHOI, Sun Cheol KWON
  • Patent number: 10756322
    Abstract: Provided are a composite separator for a secondary battery including: a porous substrate; and a coating layer, formed on the porous substrate, by thermally curing aqueous slurry including inorganic particles, first binder particles, a second binder, and a thermal curing agent, wherein the first binder particles contain a copolymer of a monomer mixture including an acrylamide-based monomer, a vinyl cyanide-based monomer, an acrylic monomer having a carboxyl group, and an acrylic monomer having a hydroxyl group, and a lithium secondary battery including the same.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: August 25, 2020
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Yun Bong Kim, Won Sub Kwack, Hye Jin Kim, Su Ji Lee, Kyu Young Cho
  • Patent number: 10724507
    Abstract: The present invention provides an active clutch mechanism and a hopping robot equipped with the same, the active clutch mechanism comprising: a sun gear; a planetary gear; and a winding gear. When the sun gear rotates in one direction, the planetary gear revolves around the sun gear in the one direction to come into contact with the winding gear, and then rotates the winding gear to wind a wire so as to store energy in an energy storage unit connected to the winding gear. When the sun gear rotates in a direction opposite to the one direction, the planetary gear revolves around the sun gear in the direction different from the one direction to become spaced from the winding gear, so as to discharge the energy stored in the energy storage unit.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: July 28, 2020
    Assignee: Seoul National University R&DB Foundation
    Inventors: Kyu Jin Cho, Gwang Pil Jung, Sun Pill Jung, Woong Bae Kim