Patents by Inventor Eun Kyu CHOI

Eun 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: 12021411
    Abstract: Auxiliary power management devices are disclosed. In some implementations, an auxiliary power management device may be coupled to an auxiliary power source that serves as a backup power supply for a primary power source to provide power to an electronic device and comprising a plurality of switches to control currents of a plurality of energy storage components, a plurality of channels coupled to the plurality of switches, respectively, a plurality of switch controllers to control the plurality of switches coupled to the plurality of channels and monitor a current or voltage of the plurality of channels, and a management logic to control the switches coupled to the plurality of channels upon detection, by the plurality of switch controllers, of a first current or voltage distribution across the channels that exceeds a predetermined threshold regarding the current or voltage distribution.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: June 25, 2024
    Assignee: SK HYNIX INC.
    Inventors: Eun Kyu Choi, Seon Cheol Kim, Sung Ryun Moon, In Bo Shim, Joon Hwan Oh
  • Publication number: 20240194233
    Abstract: A memory system includes a memory device and a memory controller for providing data to the memory device based on a clock signal. The memory device includes a first memory group; a second memory group; an internal clock generator for generating a first internal clock signal and a second internal clock signal, which respectively correspond to a first period and a second period of the clock signal; and a data distributor for providing the data respectively to the first memory group and the second memory group, based on the first internal clock signal and the second internal clock signal.
    Type: Application
    Filed: June 5, 2023
    Publication date: June 13, 2024
    Inventors: Sung Geun KANG, In Bo SHIM, Su Il JIN, Eun Kyu CHOI
  • Patent number: 11996729
    Abstract: The present technology includes a power supply and a method of operating the same. The power supply includes a main power supply configured to receive external power and output a charge voltage and main power, and an auxiliary power supply including a capacitor array configured to charge auxiliary power using the charge voltage and output the auxiliary power. The auxiliary power supply is configured to periodically repeat a discharge operation and a sub charge operation on the capacitor array when the charging of the capacitor array is started.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: May 28, 2024
    Assignee: SK hynix Inc.
    Inventors: Tae Hoon Kim, Jae Woong Jeong, Rak Hun Choi, Eun Kyu Choi, Tae Seung Han
  • Publication number: 20220285974
    Abstract: The present technology includes a power supply and a method of operating the same. The power supply includes a main power supply configured to receive external power and output a charge voltage and main power, and an auxiliary power supply including a capacitor array configured to charge auxiliary power using the charge voltage and output the auxiliary power. The auxiliary power supply is configured to periodically repeat a discharge operation and a sub charge operation on the capacitor array when the charging of the capacitor array is started.
    Type: Application
    Filed: August 30, 2021
    Publication date: September 8, 2022
    Inventors: Tae Hoon KIM, Jae Woong JEONG, Rak Hun CHOI, Eun Kyu CHOI, Tae Seung HAN
  • Publication number: 20220209573
    Abstract: Auxiliary power management devices are disclosed. In some implementations, an auxiliary power management device may be coupled to an auxiliary power source that serves as a backup power supply for a primary power source to provide power to an electronic device and comprising a plurality of switches to control currents of a plurality of energy storage components, a plurality of channels coupled to the plurality of switches, respectively, a plurality of switch controllers to control the plurality of switches coupled to the plurality of channels and monitor a current or voltage of the plurality of channels, and a management logic to control the switches coupled to the plurality of channels upon detection, by the plurality of switch controllers, of a first current or voltage distribution across the channels that exceeds a predetermined threshold regarding the current or voltage distribution.
    Type: Application
    Filed: June 15, 2021
    Publication date: June 30, 2022
    Inventors: Eun Kyu CHOI, Seon Cheol KIM, Sung Ryun MOON, In Bo SHIM, Joon Hwan OH
  • Patent number: 10322366
    Abstract: Wet-type carbon dioxide capturing equipment includes a CO2 absorption tower where CO2 of an exhaust gas reacts with an absorbent, a CO2 stripping tower where CO2 is separated from a rich solution absorbed the CO2 in the CO2 absorption tower, a reboiler for supplying thermal energy to the CO2 stripping tower to separate the CO2 from the rich solution in the CO2 stripping tower, a first heat exchanger for heating the rich solution by exchanging heat between a lean solution having the CO2 separated therefrom in the CO2 stripping tower and the rich solution, a mechanical vapor recompressor (MVR) for compressing a CO2 gas separated in the CO2 stripping tower, and a second heat exchanger for separating a portion of CO2 from the rich solution by heating the rich solution by exchanging heat between the CO2 gas compressed in the MVR and the rich solution passing through the first heat exchanger, in which the rich solution having CO2 that is not separated in the second heat exchanger is input to the CO2 stripping tower
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: June 18, 2019
    Assignee: KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
    Inventors: Young Ill Lee, Tea Young Lim, Seong Pill Cho, Eun Kyu Choi, Sung Mun Yoon
  • Publication number: 20180078892
    Abstract: Wet-type carbon dioxide capturing equipment includes a CO2 absorption tower where CO2 of an exhaust gas reacts with an absorbent, a CO2 stripping tower where CO2 is separated from a rich solution absorbed the CO2 in the CO2 absorption tower, a reboiler for supplying thermal energy to the CO2 stripping tower to separate the CO2 from the rich solution in the CO2 stripping tower, a first heat exchanger for heating the rich solution by exchanging heat between a lean solution having the CO2 separated therefrom in the CO2 stripping tower and the rich solution, a mechanical vapor recompressor (MVR) for compressing a CO2 gas separated in the CO2 stripping tower, and a second heat exchanger for separating a portion of CO2 from the rich solution by heating the rich solution by exchanging heat between the CO2 gas compressed in the MVR and the rich solution passing through the first heat exchanger, in which the rich solution having CO2 that is not separated in the second heat exchanger is input to the CO2 stripping tower
    Type: Application
    Filed: June 30, 2017
    Publication date: March 22, 2018
    Applicant: KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
    Inventors: Young Ill LEE, Tea Young LIM, Seong Pill CHO, Eun Kyu CHOI, Sung Mun YOON