Patents by Inventor Kyu Choi

Kyu 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).

  • Patent number: 11329157
    Abstract: A two-terminal biristor in which a polysilicon emitter layer is inserted and a method of manufacturing the same are provided. The method of manufacturing the two-terminal biristor according to an embodiment of the present disclosure includes forming a first semiconductor layer of a first type on a substrate, forming a second semiconductor layer of a second type on the first semiconductor layer, forming a third semiconductor layer of the first type on the second semiconductor layer, and forming a polysilicon layer of the first type on the third semiconductor layer.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: May 10, 2022
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Yang-Kyu Choi, Jun Woo Son, Jae Hur
  • Patent number: 11328078
    Abstract: Various embodiments of the disclosure provide an apparatus for protecting information. According to various embodiments of the disclosure, an apparatus for monitoring a database includes a transceiver, and a processor operatively coupled to the transceiver. The processor may be configured to acquire a query used in access of the database from the database through the transceiver, replace a first code, included in the acquired query, for query checking to a predefined text, convert the text to a second code for query checking, and output information on validity of the acquired query on the basis of a comparison result of the first code and the second code.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: May 10, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yeon-Kyu Choi
  • Publication number: 20220138576
    Abstract: A lightened neural network method and apparatus. The neural network apparatus includes a processor configured to generate a neural network with a plurality of layers including plural nodes by applying lightened weighted connections between neighboring nodes in neighboring layers of the neural network to interpret input data applied to the neural network, wherein lightened weighted connections of at least one of the plurality of layers includes weighted connections that have values equal to zero for respective non-zero values whose absolute values are less than an absolute value of a non-zero value. The lightened weighted connections also include weighted connections that have values whose absolute values are no greater than an absolute value of another non-zero value, the lightened weighted connections being lightened weighted connections of trained final weighted connections of a trained neural network whose absolute maximum values are greater than the absolute value of the other non-zero value.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 5, 2022
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Changyong SON, Jinwoo SON, Byungin YOO, Chang Kyu CHOI, Jae-Joon HAN
  • Publication number: 20220137858
    Abstract: A memory system according to the present technology may include a plurality of memory devices including a plurality of memory devices including a plurality of blocks configured of memory cells and a memory controller configured to control the plurality of memory devices corresponding to a plurality of zones by configuring the plurality of zones with the plurality of blocks included in each of the plurality of memory devices, wherein the memory controller is further configured to: receive a write request from a host, determine a target zone indicated by the write request among the plurality of zones, and determine a logical address of the target zone on which a write operation is to be started based on a write pointer and an offset corresponding to the target zone.
    Type: Application
    Filed: May 4, 2021
    Publication date: May 5, 2022
    Inventors: Yu Jung LEE, Bo Kyeong KIM, Do Hyeong LEE, Min Kyu CHOI
  • Publication number: 20220140444
    Abstract: A bus bar includes terminal portions disposed at both ends, respectively; a plurality of bridges disposed between the terminal portions to electrically connect the terminal portions, and to be sequentially fused when an overcurrent flows. The plurality of bridges may be configured to have different resistance values, respectively.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Sol San SON, Dong Ha HWANG, Seok Min KIM, Seo Roh RHEE, Ji Seok LEE, Gyu Jin CHUNG, Seung Hoon JU, Yang Kyu CHOI
  • Patent number: 11322613
    Abstract: A structure and an operation of a transistor, which is a vertical transistor in which a nanowire-type floating body layer is vertically formed or a horizontal transistor in which a floating body layer is horizontally formed, and implements a spike operation of a neuron by storing and releasing charges inside the transistor, and a neuromorphic system using the same are provided. The vertical transistor includes a floating body layer in a form of a vertical nanowire vertically formed on a substrate, a source and a drain formed above and below the floating body layer, a gate insulating layer formed on the source and surrounding the floating body layer, a gate formed outside the gate insulating layer, and a contact metal being in contact with the source, the drain and the gate to input or output an electrical signal.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: May 3, 2022
    Assignee: Korea Advanced Institute Of Science And Technology
    Inventors: Yang-Kyu Choi, Joonkyu Han
  • Patent number: 11323962
    Abstract: A power control method of a base station in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA) is provided for reducing power consumption by turning off the bias of the power amplifier for the duration of a symbol carrying no user data. The method includes checking scheduling information of radio resources, detecting a symbol carrying no user data, based on the scheduling information, and turning off a bias of the power amplifier for a symbol duration of the symbol carrying no user data. The transmission power control method is capable of reducing power consumption of the base station by turning off the bias of the power amplifier of the base station for the symbol duration in which no user data is transmitted.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: May 3, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Geun Lee, Young Bae Park, Young Kyu Choi, Ki Back Kim
  • Publication number: 20220122648
    Abstract: A memory device includes a clock receiver configured to receive, from a memory controller, a write clock that is used to receive write data during a data write operation, a duty monitor configured to generate first monitoring information by monitoring a duty of the write clock, and a duty adjuster configured to adjust the duty of the write clock in response to a duty control signal and output an adjusted write clock. The memory device provides the first monitoring information to the memory controller, and receives the duty control signal, generated using the first monitoring information, from the memory controller.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 21, 2022
    Inventors: DAE-SIK MOON, GIL-HOON CHA, KI-SEOK OH, CHANG-KYO LEE, YEON-KYU CHOI, JUNG-HWAN CHOI, KYUNG-SOO HA, SEOK-HUN HYUN
  • Patent number: 11291936
    Abstract: A strainer for a fuel pump according to the present invention includes: a communicating pipe including a flow path formed to communicate with a fuel inlet of the fuel pump; a filter including an internal space in which a fuel flows and coupled to the communicating pipe so that the internal space communicates with the communicating pipe; and a rib disposed in the filter and coupled to the communicating pipe, in which the filter includes a first filtering portion extending in a length direction with respect to the communicating pipe, a connecting portion extending in a width direction at an edge of the first filtering portion, and a second filtering portion extending in the length direction at the connecting portion and spaced apart from the first filtering portion in the width direction. Therefore, the strainer may have a relatively large filtering area and a small size.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: April 5, 2022
    Assignee: COAVIS
    Inventors: Joon Seup Kim, Yong Hwan Choi, Ku Sung Kwon, Jong Hyuk Yoon, Jin Kyu Choi, Jeong Sik Kim, Dong Heon Mo
  • Patent number: 11295111
    Abstract: An apparatus and method for detecting a fake fingerprint is disclosed. The apparatus may divide an input fingerprint image into blocks, determine an image quality assessment (IQA) value associated with each block, determine a confidence value based on the IQA values using a confidence determination model, and determine whether an input fingerprint in the input fingerprint image is a fake fingerprint based on the determined confidence value.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: April 5, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wonjun Kim, Youngsung Kim, Sungjoo Suh, Hyungsuk Kim, Chang Kyu Choi
  • Publication number: 20220102818
    Abstract: A battery cell includes a casing having an accommodation space formed therein and having one or both ends open; a cover plate covering one or both open ends of the casing; and an electrode assembly accommodated in the accommodation space, in which a plurality of electrode plates are stacked with a separator interposed therebetween. The electrode assembly includes electrode connection portions, respectively extending from the plurality of electrode plates; and a terminal bonded to the electrode connection portion and having a portion exposed outwardly through the cover plate.
    Type: Application
    Filed: September 27, 2021
    Publication date: March 31, 2022
    Inventors: Seo Roh Rhee, Gyu Jin Chung, Won Seok Jeong, Ha Chul Jeong, Yang Kyu Choi
  • Patent number: 11286273
    Abstract: Disclosed are a novel rhamnolipid compound, an optical isomer thereof, or a pharmaceutically acceptable salt thereof in the present disclosure. The novel rhamnolipid compound, the optical isomer thereof, or the pharmaceutically acceptable salt thereof selectively exhibits cytotoxicity to human cancer cell lines, thereby inhibiting the growth of cancer cells, and thus has particularly excellent preventive or therapeutic effects against the above-mentioned types of cancers.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: March 29, 2022
    Assignee: KOREA INSTITUTE OF OCEAN SCIENCE & TECHNOLOGY
    Inventors: Hee Jae Shin, Byeoung Kyu Choi, Hwa Sun Lee, Hyi Seung Lee, Yeon Ju Lee, Jong Seok Lee, Ji Hoon Lee, Chan Hong Park
  • Patent number: 11288570
    Abstract: A semiconductor channel based neuromorphic synapse device 1 including a trap-rich layer may be provided that includes: a first to a third semiconductor regions which are formed on a substrate and are sequentially arranged; a word line which is electrically connected to the first semiconductor region; a trap-rich layer which surrounds the second semiconductor region; and a bit line which is electrically connected to the third semiconductor region. When a pulse with positive (+) voltage is applied to the word line, a concentration of electrons emitted from the trap-rich layer to the second semiconductor region increases and a resistance of the second semiconductor region decreases. When a pulse with negative (?) voltage is applied to the word line, a concentration of electrons trapped in the trap-rich layer from the second semiconductor region increases and the resistance of the second semiconductor region increases.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: March 29, 2022
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yang-Kyu Choi, Jae Hur
  • Publication number: 20220093144
    Abstract: A method of operating memory devices disposed in different ranks of a multi-rank memory device and sharing a signal line includes receiving, in all of the memory devices included in the multi-rank memory device, on-die termination (ODT) state information of the signal line. The method further includes storing, in each of the memory devices of the multi-rank memory device, the ODT state information of the signal line in a mode register. The method further includes generating, in each of the memory devices of the multi-rank memory device, a control signal based on the ODT state information of the signal line stored in the mode register. The method further includes changing, in each of the memory devices of the multi-rank memory device, an ODT setting of the signal line in response to the control signal.
    Type: Application
    Filed: December 1, 2021
    Publication date: March 24, 2022
    Inventors: DAE-SIK MOON, KYUNG-SOO HA, YOUNG-SOO SOHN, KI-SEOK OH, CHANG-KYO LEE, JIN-HOON JANG, YEON-KYU CHOI, SEOK-HUN HYUN
  • Publication number: 20220092295
    Abstract: A three-dimensional (3D) image-based facial verification method and apparatus is provided. The facial verification method may include capturing a facial image of a 3D face of a user, determining an occluded region in the captured facial image by comparing the captured facial image and an average facial image, generating a synthetic image by synthesizing the captured facial image and the average facial image based on the occluded region, and verifying the user based on the synthetic image.
    Type: Application
    Filed: December 2, 2021
    Publication date: March 24, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seungju HAN, Minsu KO, Jaejoon HAN, Chang Kyu CHOI
  • Publication number: 20220080328
    Abstract: A foldable toy includes: a body part; a support part movably connected to the body part; at least one movable body part movably connected to at least one of the body part or the support part; and a locking part to fix the moveable body part in a first position to lock the foldable toy in a first shape in which the body part, the support part, and the movable body part are deployed. When the locking part is unlocked, the movable body part moves to a second position, and the foldable toy is folded into a second shape in which the body part, the support part, and the movable body part are stacked on one another.
    Type: Application
    Filed: July 15, 2019
    Publication date: March 17, 2022
    Inventor: Shin-Kyu CHOI
  • Patent number: 11276650
    Abstract: A device and substrate are disclosed. An illustrative device includes a substrate having a first surface and an opposing second surface, a solder material receiving curved surface exposed at the second surface of the substrate, a solder resist material that at least partially covers the solder material receiving curved surface such that a middle portion of the solder receiving curved surface is exposed and such that an edge portion of the solder material receiving curved surface is covered by the solder resist material and forms an undercut, and a solder material disposed within the solder material receiving curved surface and within the undercut.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: March 15, 2022
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: YongIk Choi, Chris Chung, Michael Leary, Domingo Figueredo, Chang Kyu Choi, Sarah Haney, Li Sun
  • Patent number: 11275525
    Abstract: A memory system comprising: a plurality of memory devices; a buffer memory suitable for buffering write data inputted from a host; and a controller suitable for: classifying the write data buffered in the buffer memory into N data groups according to logical addresses corresponding to the write data, N being a natural number greater than or equal to 2, selecting at least one data group among the N data groups when a size difference between at least two of the N data groups is equal to or more than a set size, and flushing at least one piece of data of the selected data group to at least one of the plurality of memory devices.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: March 15, 2022
    Assignee: SK hynix Inc.
    Inventors: Dong-Hwan Koo, Joo-Il Lee, Min-Kyu Choi
  • Patent number: 11271271
    Abstract: A bus bar includes terminal portions disposed at both ends, respectively; a plurality of bridges disposed between the terminal portions to electrically connect the terminal portions, and to be sequentially fused when an overcurrent flows. The plurality of bridges may be configured to have different resistance values, respectively.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: March 8, 2022
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Sol San Son, Dong Ha Hwang, Seok Min Kim, Seo Roh Rhee, Ji Seok Lee, Gyu Jin Chung, Seung Hoon Ju, Yang Kyu Choi
  • Patent number: 11271553
    Abstract: A buffer circuit configured to receive first and second input signals through first and second input transistors coupled to a first power voltage node, output a first output signal through a first output node and a second output signal through a second output node based on the first and second input signals. A load circuit is coupled among the first output node, the second output node, and a second power voltage node and a resistance value is adjusted based on at least one of the first and second output signals.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: March 8, 2022
    Assignee: SK hynix Inc.
    Inventors: Sun Ki Cho, Dong Uc Ko, Yang Ho Sur, Jun Yong Song, Sung Gil Jang, Hae Kang Jung, Min Sung Cheon, Chang Kyu Choi, Tae Jin Hwang