Patents by Inventor Hyun-Yoo Kim

Hyun-Yoo Kim 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: 20230010177
    Abstract: A method for a digital twin federation is provided. The method for a digital twin federation includes: transmitting, by a first digital twin, a connection request including digital twin information for the digital twin federation to a connection broker; receiving, by the first digital twin, connection information of a second digital twin having the digital twin information for the digital twin federation from the connection broker; and performing, by the first digital twin, connection establishment with the second digital twin using connection information of the second digital twin.
    Type: Application
    Filed: July 7, 2022
    Publication date: January 12, 2023
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun Jeong LEE, Yong-Woon KIM, Sangkeun YOO, Changkyu LEE
  • Publication number: 20220406365
    Abstract: This document describes apparatuses and techniques for write timing compensation. In various aspects, a write timing compensator of a memory controller can apply a delay to data signals transmitted to a memory circuit based on various operating parameters, which may include voltage or latency information. In some cases, the memory controller or memory circuit powers components of write timing compensation circuitry using a dynamic power rail that scales with an operating voltage of the memory circuit. By so doing, the write timing compensator or compensation circuits may improve signal integrity of data signals communicated between the memory controller and the memory circuit at different frequencies and voltages.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 22, 2022
    Applicant: Micron Technology, Inc.
    Inventors: Kang-Yong Kim, Keun Soo Song, Hyun Yoo Lee
  • Publication number: 20220406357
    Abstract: This document describes apparatuses and techniques for multi-rail power transition. In various aspects, a power rail controller transitions a memory circuit (e.g., of a memory die) from a first power rail to a second power rail. The power rail controller then changes a voltage of the first power rail from a first voltage to a second voltage. The power rail controller may also adjust termination impedance or a clock frequency of the memory circuit before transitioning the memory circuit to the second power rail. The power rail controller then transitions the memory circuit from the second power rail to the first power rail to enable operation of the memory circuit at the second voltage. By so doing, the power rail controller may improve the reliability of memory operations when transitioning operation of the memory circuit from the first voltage to the second voltage.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 22, 2022
    Applicant: Micron Technology, Inc.
    Inventors: Kang-Yong Kim, Hyun Yoo Lee, Keun Soo Song
  • Patent number: 11495223
    Abstract: An electronic device according to various embodiments may comprise a memory in which one or more applications are installed, a communication circuit, and a processor, wherein the processor is configured to acquire audio data during execution of a designated application among the one or more applications, wherein the acquiring of audio data comprises an operation of storing, in the memory, at least a portion including multiple pieces of phoneme information among the audio data, when a designated condition is satisfied, transmit the at least portion to an external electronic device so that the external electronic device generates designated information for execution of at least one application among the one or more applications by using at least a part of the multiple pieces of phoneme information stored before the designated condition is satisfied, and on the basis of the designated information, execute the at least one application in relation to the designated application.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: November 8, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun Gi Ahn, Joo Yoo Kim, Ji Eun Kim, Dong Hyun Roh, Kyung Sub Min, Seung Eun Lee
  • Publication number: 20220343963
    Abstract: In some examples, memory die may include a selection pad, which may be coupled to a power potential. The selection pad may provide a signal to a selection control circuit, which may control a selection circuit to couple a power pad to one of multiple power rails. In some examples, a power management integrated circuit may include a selection circuit to provide one power potential to a package including a memory die when a selection signal has a logic level and another power potential when the selection signal has another logic level.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 27, 2022
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Hyun Yoo Lee, Kang-Yong Kim, Sourabh Dhir, Keun Soo Song
  • Publication number: 20220300370
    Abstract: Described apparatuses and methods provide configurable error correction code (ECC) circuitry and schemes that can utilize a shared ECC engine between multiple memory banks of a memory, including a low-power double data rate (LPDDR) memory. A memory device may include one or more dies with multiple memory banks. The configurable ECC circuitry can use an ECC engine that services a memory bank by producing ECC values based on data stored in the memory bank when data-masking functionality is enabled. When data-masking functionality is disabled, the configurable ECC circuitry can use the shared ECC engine that services at least two memory banks by producing ECC values with a larger quantity of bits based on respective data stored in the at least two memory banks. By using the shared ECC engine responsive to the data-masking functionality being disabled, the ECC functionality can provide higher data reliability with lower die area utilization.
    Type: Application
    Filed: March 10, 2022
    Publication date: September 22, 2022
    Applicant: Micron Technology, Inc.
    Inventors: Keun Soo Song, Kang-Yong Kim, Hyun Yoo Lee
  • Publication number: 20220269432
    Abstract: Methods, apparatuses, and systems related to combining and utilizing multiple memory circuits having complementary characteristics are described. An apparatus may include a first memory circuit having a first emphasized characteristic and a second memory circuit having a second emphasized characteristic. The first and second memory circuits may be connected in parallel and to a common interface configured to communicate data between the apparatus and an external device.
    Type: Application
    Filed: May 11, 2022
    Publication date: August 25, 2022
    Inventors: Hyun Yoo Lee, Kang-Yong Kim
  • Publication number: 20220216497
    Abstract: Disclosed are an end plate that maintains the flatness of a fuel cell stack formed by stacking a plurality of fuel cells so that a uniform surface pressure is maintained, a fastening bar, and the fuel cell stack including the same. The fuel cell stack includes a plurality of fuel cells, an end plate for the fuel cell stack is disposed on both side surfaces of the fuel cell stack to maintain the flatness of the fuel cell stack so that the uniform surface pressure is maintained, and a fastening bar is disposed outside the fuel cell stack has both ends coupled to the end plate for the fuel cell stack.
    Type: Application
    Filed: January 4, 2022
    Publication date: July 7, 2022
    Inventors: Duck Hyoung Hwang, Hyun Yoo Kim, Kyung Ho Kim, Hyun Chul Lee, Young Ju Kim, Jun Sung Goo, Dong Won Kim, Chang Hun Lee
  • Publication number: 20220209998
    Abstract: Described apparatuses and methods are directed to equalization with pulse-amplitude modulation (PAM) signaling. As bus frequencies have increased, the time for correctly transitioning between voltage levels has decreased, which can lead to errors. Symbol decoding reliability can be improved with equalization, like with decision-feedback equalization (DFE). DFE, however, can be expensive for chip area and power usage. Therefore, instead of applying DFE to all voltage level determination paths in a receiver, DFE can be applied to a subset of such determination paths. With PAM4 signaling, for example, a DFE circuit can be coupled between an output and an input of a middle slicer. In some cases, symbol detection reliability can be maintained even with fewer DFE circuits by compressing a middle eye of the PAM4 signal. The other two eyes thus have additional headroom for expansion. Encoding schemes, impedance terminations, or reference voltage levels can be tailored accordingly.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 30, 2022
    Applicant: Micron Technology, Inc.
    Inventors: Kang-Yong Kim, Hyun Yoo Lee, Timothy M. Hollis, Dong Soon Lim
  • Publication number: 20220206717
    Abstract: Described apparatuses and methods enable communication between a host device and a memory device to establish relative delays between different data lines. If data signals propagate along a bus with the same timing, simultaneous switching output (SSO) and crosstalk can adversely impact channel timing budget parameters. An example system includes an interconnect having multiple data lines that couple the host device to the memory device. In example operations, the host device can transmit to the memory device a command indicative of a phase offset between two or more data lines of the multiple data lines. The memory device can implement the command by transmitting or receiving signals via the interconnect with different relative phase offsets between data lines. The host device (e.g., a memory controller) can determine appropriate offsets for a given apparatus. Lengths of the offsets can vary. Further, a system can activate the phase offsets based on frequency.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 30, 2022
    Applicant: Micron Technology, Inc.
    Inventors: Kang-Yong Kim, Hyun Yoo Lee, Timothy M. Hollis, Dong Soon Lim
  • Publication number: 20220166038
    Abstract: A humidifier for a fuel cell includes: a housing; a first space provided in the housing; a moist air supply port connected to the housing so as to communicate with the first space and configured to supply moist air discharged from a fuel cell stack; a humidification unit provided in the first space; a second space disposed separately from the first space and provided in the housing so as to communicate with the humidification unit; and an inflow gas discharge port connected to the housing so as to communicate with the second space and configured to discharge inflow gas that has passed through the humidification unit, which can simplify a structure of the humidifier and improve spatial utilization and a degree of design freedom.
    Type: Application
    Filed: March 17, 2021
    Publication date: May 26, 2022
    Inventors: Ju Yong Lee, Won Sub Han, Hyun Yoo Kim
  • Publication number: 20220045342
    Abstract: A fuel cell system capable of improving the chemical durability of a membrane electrode assembly by compensating for the amount of an antioxidant lost within the electrolyte membrane or electrode of the fuel cell stack in such a manner that the antioxidant is provided from an antioxidant supply device, provided in a fuel processing system and/or an air processing system, to a fuel cell stack, in preparation for a case where the antioxidant within the electrolyte membrane or electrode is lost due to the dissolution or migration characteristic of the antioxidant.
    Type: Application
    Filed: December 9, 2020
    Publication date: February 10, 2022
    Inventors: Jung Han Yu, Hyeon Seok Ban, Bo Ki Hong, Hyun Yoo Kim
  • Publication number: 20220029180
    Abstract: A humidifier for a fuel cell includes: a housing that includes a moist air supply port through which moist air is supplied, a moist air discharge port through which the moist air is discharged, and an inflow gas supply port through which inflow gas is supplied; a humidification unit provided in the housing to humidify the inflow gas by using the moist air; and a humidification amount adjusting unit to selectively adjust an amount of humidification of the inflow gas by the humidification unit based on a flow rate of the moist air supplied to the moist air supply port, thereby obtaining an advantageous effect of accurately adjusting the amount of humidification based on an operating condition of a fuel cell stack.
    Type: Application
    Filed: October 21, 2020
    Publication date: January 27, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Ju Yong LEE, Hyun Yoo KIM
  • Publication number: 20210111420
    Abstract: A fuel cell humidifier may completely or substantially completely prevent condensate water from entering a running fuel cell stack. The fuel cell humidifier includes a housing; a plurality of hollow fiber membranes arranged in the housing; a cap which is coupled to one end of the housing and has an air discharge port for supplying humidified air to the fuel cell stack; and a bypass tube for transferring condensate water generated from the humidified air to an interior space of the housing through which a discharge gas flows, wherein a first end of the bypass tube is disposed inside the air discharge port, and the bypass tube is in fluid communication with the interior space of the housing through a second end of the bypass tube.
    Type: Application
    Filed: February 23, 2018
    Publication date: April 15, 2021
    Inventors: Woong-Jeon Ahn, Kyoung-Ju Kim, Young-Seok Oh, Jin-Hyung Lee, Na-Hyeon An, Chang-Ha Lee, Hyun-Yoo Kim
  • Patent number: 10950878
    Abstract: A humidifier for a fuel cell includes a body, first and second humidifying spaces formed inside the body, an exhaust gas inlet and an exhaust gas outlet for supplying exhaust gas released from the fuel cell stack into the first and second humidifying spaces, a passing space formed inside the body and directly or indirectly communicated with the second humidifying space and the fuel cell stack. The inflow gas flows into the passing space from the first humidifying space. A valve is installed in the passing space to allow the inflow gas introduced into the passing space to flow into the fuel cell stack with or without passing through or to allow some of the inflow gas introduced into the passing space to flow into the fuel cell stack passing through the second humidifying space and others of the inflow gas introduced into the fuel cell stack without passing through the second humidifying space.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: March 16, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sae Han Oh, Hyun Yoo Kim
  • Publication number: 20210050607
    Abstract: A humidifier for a fuel cell is provided and includes a housing having, at a first side, a moist air supply port through which moist air is supplied from a fuel cell stack and having, at a second side, a moist air discharge port. A humidifying membrane is disposed in the housing and allows dry air to flow along the inside of the humidifying membrane. A bypass flow path is formed in the housing to allow a part of the moist air supplied to the moist air supply port to continuously flow to the moist air discharge port without passing through the humidifying membrane, thereby adjusting the amount of humidification and a differential pressure of the humidifier based on an operating condition of a fuel cell.
    Type: Application
    Filed: July 14, 2020
    Publication date: February 18, 2021
    Inventors: Hyun Yoo Kim, Woong Jeon Ahn, Young Seok Oh, Kyoung Ju Kim
  • Patent number: 10804550
    Abstract: A humidifier for a fuel cell includes: a bundle of hollow fiber membranes disposed therein, such that an intake gas flows inside the bundle of hollow fiber membranes; a housing configured to accommodate the bundle of hollow fiber membranes, such that an exhaust gas, which has a higher humidity than the intake gas, flows inside the housing; and a guide member disposed in the housing to restrict a movement of the bundle of hollow fiber membranes inside the housing. Coolant flows through the guide member to cool the exhaust gas to promote condensation of the exhaust gas.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: October 13, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Hyun Yoo Kim, Chang Ha Lee
  • Patent number: 10756362
    Abstract: An air shut-off valve apparatus for a fuel cell system is provided. The apparatus includes a valve body having an inlet-side air passage through which supply air flows and an outlet-side air passage through which exhaust air flows. A valve flap is installed in the valve body to open or close the inlet-side air passage and the outlet-side air passage. An inlet-side check valve is opened when pressure of the supply air is greater than or equal to a predetermined pressure, to guide the supply air into the fuel cell stack through the inlet-side air passage even while the valve flap is closed. An outlet-side check valve is opened when pressure of the exhaust air is greater than or equal to a predetermined pressure, to guide the exhaust air released from the fuel cell stack to flow through the outlet-side air passage even while the valve flap is closed.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: August 25, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Byeong Seung Lee, Kyoung Ku Ha, Hyun Yoo Kim, Jeong Hee Park
  • Publication number: 20200212460
    Abstract: An air shut-off valve apparatus for a fuel cell system is provided. The apparatus includes a valve body having an inlet-side air passage through which supply air flows and an outlet-side air passage through which exhaust air flows. A valve flap is installed in the valve body to open or close the inlet-side air passage and the outlet-side air passage. An inlet-side check valve is opened when pressure of the supply air is greater than or equal to a predetermined pressure, to guide the supply air into the fuel cell stack through the inlet-side air passage even while the valve flap is closed. An outlet-side check valve is opened when pressure of the exhaust air is greater than or equal to a predetermined pressure, to guide the exhaust air released from the fuel cell stack to flow through the outlet-side air passage even while the valve flap is closed.
    Type: Application
    Filed: April 5, 2019
    Publication date: July 2, 2020
    Inventors: Byeong Seung Lee, Kyoung Ku Ha, Hyun Yoo Kim, Jeong Hee Park
  • Publication number: 20200153004
    Abstract: A humidifier for a fuel cell includes a body, first and second humidifying spaces formed inside the body, an exhaust gas inlet and an exhaust gas outlet for supplying exhaust gas released from the fuel cell stack into the first and second humidifying spaces, a passing space formed inside the body and directly or indirectly communicated with the second humidifying space and the fuel cell stack. The inflow gas flows into the passing space from the first humidifying space. A valve is installed in the passing space to allow the inflow gas introduced into the passing space to flow into the fuel cell stack with or without passing through or to allow some of the inflow gas introduced into the passing space to flow into the fuel cell stack passing through the second humidifying space and others of the inflow gas introduced into the fuel cell stack without passing through the second humidifying space.
    Type: Application
    Filed: March 28, 2019
    Publication date: May 14, 2020
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sae Han Oh, Hyun Yoo Kim