Patents by Inventor Hyun Yoo

Hyun Yoo 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: 20230343380
    Abstract: Described apparatuses and methods relate to a bank-level self-refresh for a memory system. A memory device can include a controller with logic that implements self-refresh operations in the memory device. The logic may perform self-refresh operations on a set of banks of the memory device that is less than all banks within the memory device. The set of banks of the memory device may be determined such that the peak current in a power distribution network of the memory device is bounded when the self-refresh operation is performed. Accordingly, bank-level self-refresh can reduce a cost of the memory device of a memory system by enabling use of a less complicated power distribution network. The bank-level self-refresh may also be implemented with different types of refresh operations. Amongst other scenarios, bank-level self-refresh can be deployed in memory-expansion environments.
    Type: Application
    Filed: April 21, 2022
    Publication date: October 26, 2023
    Applicant: Micron Technology, Inc.
    Inventors: John Christopher Sancon, Yang Lu, Kang-Yong Kim, Mark Kalei Hadrick, Hyun Yoo Lee
  • Patent number: 11783885
    Abstract: Systems, apparatuses, and methods related to a memory device, such as a low-power dynamic random-access memory (DRAM), and an associated host device are described. The memory device includes control circuitry that can determine an operational status of the memory device (e.g., whether the memory device is currently performing a self-refresh operation). The control circuitry can also transmit a signal indicative of the operational status to the host device in response to receiving a command directing the memory device to exit a self-refresh mode. The host device can operate based on the signal. The signal may therefore allow the memory device, the host device, or both to manage operations, including whether to send, receive, or process commands and data read/write requests during times that may be associated with self-refresh operations.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: October 10, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Kang-Yong Kim, Hyun Yoo Lee
  • Patent number: 11783883
    Abstract: Systems, apparatuses, and methods related to a memory device, such as a low-power dynamic random-access memory (DRAM) and an associated host device are described. The memory device and the host device can include control logic that enables the host device to transmit a burst value to the memory device, which may enable the memory device, the host, or both, to manage refresh operations during a normal operation mode or a self-refresh mode. The burst value can be transmitted to the memory device in association with a command (e.g., a command directing the memory device to enter the self-refresh mode). The burst value can specify a number of self-refresh operations to be initiated at the memory device in response to receiving the command. When the specified number of self-refresh operations are completed, regular self-refresh operations may begin, with an internal self-refresh timer counting an interval to the next self-refresh operation.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: October 10, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Kang-Yong Kim, Hyun Yoo Lee
  • Patent number: 11768157
    Abstract: Apparatus for laser induced ablation spectroscopy (LIBS) is disclosed. An apparatus can have a computer, a pulsed laser and a lightguide fiber bundle that is subdivided into branches. One branch can convey a first portion of the light to a first optical spectrometer and a different branch can convey a second portion of the light to another optical spectrometer. The first spectrometer can be relatively wideband to analyze a relative wide spectral segment and the other spectrometer can be high dispersion to measure minor concentrations. The apparatus can further comprise an unbranched lightguide fiber bundle to provide more light to a low sensitivity spectrometer. The apparatus can include an inductively coupled plasma mass spectrometer ICP-MS and a computer instructions operable to provide normalized LIBS/ICP-MS composition analyses.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: September 26, 2023
    Assignee: Applied Spectra, Inc.
    Inventors: Jong Hyun Yoo, Chunyi Liu, Richard E. Russo
  • Publication number: 20230297253
    Abstract: A memory system may include a memory device including a plurality of memory areas each configured by a plurality of memory blocks; and a memory controller configured to generate zones each including at least one memory block selected from at least one of the memory areas included in the memory device, manage configuration information for each generated zone, sequentially store data from a first storage location of an open zone among the generated zones during a write operation on the open zone according to an external request, and determine a number of active target memory areas associated with the open zone on a basis of configuration information of the open zone.
    Type: Application
    Filed: August 5, 2022
    Publication date: September 21, 2023
    Inventors: Dong Kyu LEE, Seung Geol BAEK, Jae Hyun YOO, Seon Ju LEE
  • Patent number: 11746173
    Abstract: Provided is a core-shell copolymer, and in particular, a core-shell copolymer including a core and a shell surrounding the core, wherein the core includes a conjugated diene monomer-derived repeating unit, an aromatic vinyl monomer-derived repeating unit, and an aromatic (meth)acrylate monomer-derived repeating unit, the shell includes an alkyl (meth)acrylate monomer-derived repeating unit, an aromatic vinyl monomer-derived repeating unit, and an aromatic (meth)acrylate monomer-derived repeating unit, the core has a particle size of 800 ? to 900 ?, the core-shell copolymer has a particle size of 900 ? to 1000 ?, the core has a refractive index of 1.5355 to 1.5425, and the core-shell copolymer has a refractive index of 1.5415 to 1.5440.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: September 5, 2023
    Inventors: Sang Il Nam, Ki Hyun Yoo, Yoon Ho Kim
  • Publication number: 20230275254
    Abstract: A mandrel for manufacturing an electrode assembly includes a first mandrel member having a semicircular cross-section and a predetermined length, and a second mandrel member configured to define a cylindrical shape of the mandrel by being coupled to the first mandrel member while facing the first mandrel member. A concave-convex part is provided on joint surfaces of the first and second mandrel members. The concave-convex part includes a protrusion and a groove formed in a longitudinal direction so as to engage with each other.
    Type: Application
    Filed: August 4, 2021
    Publication date: August 31, 2023
    Applicant: LG Energy Solution, LTD.
    Inventors: Jae Hyun YOO, Young Tae KIM, Yu Shik HONG
  • Patent number: 11743425
    Abstract: A conferencing assembly for sharing content from source devices includes a common display screen, a switcher controlling input to the screen, and a table assembly with a tabletop opening. A control cable assembly has a first end linked to the switcher, a second ends having a plug connectable to a source device communication port, and a first control cable located therebetween. A take up assembly including a first weight is disposed below the opening. The control cable assembly links to the first weight to apply a force tending to pull the second end of the control cable assembly toward the opening. A first user interface including a control button useable to send a signal to the switcher causing it to provide first content from a source device connected to the control cable assembly to the screen is integrated into the table assembly and is associated with the control cable assembly.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: August 29, 2023
    Assignee: Steelcase Inc.
    Inventors: Lewis Epstein, Brett Kincaid, Hyun Yoo, Suzanne Stage, Lukas Scherrer, Larry Cheng
  • Patent number: 11735246
    Abstract: Disclosed herein is an apparatus that includes a plurality of memory banks and a refresh controller configured to perform a refresh operation on one or more of the plurality of memory banks having a first state without performing the refresh operation on one or more of the plurality of memory banks having a second state responsive to a first refresh command, and perform the refresh operation on a selected one of the plurality of memory banks responsive to a second refresh command. The refresh controller is configured to bring the selected one of the plurality of memory banks into the second state when the refresh operation is performed responsive to the second refresh command.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: August 22, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Atsushi Hatakeyama, Hyun Yoo Lee, Kang-Yong Kim, Akiyoshi Yamamoto
  • Publication number: 20230250217
    Abstract: The present invention relates to an alkylene-oxide-added polyol composition, a polyurethane using same, and a hot-melt adhesive comprising same, and, more specifically, to an alkylene oxide-added polyol composition, a polyurethane using same, and a hot-melt adhesive comprising same, the composition being prepared by performing, in a specific content ratio, an addition reaction between an alkylene oxide and an anhydrosugar alcohol composition comprising a) a monoanhydrosugar alcohol, b) a dianhydrosugar alcohol, c) a polysaccharide alcohol, d) an anhydrosugar alcohol derived from a polysaccharide alcohol, and e) a polymer of at least one of a) to d), and thus can increase the amount of bio components, improves adhesive strength, and enables a polyurethane to be prepared at a cost lower than that of when using petroleum polyols and other biopolyols.
    Type: Application
    Filed: July 7, 2021
    Publication date: August 10, 2023
    Applicant: SAMYANG CORPORATION
    Inventors: Gwang Seok SONG, Hoon RYU, Jae Guk NOH, Seung Hyun YOO, Min Jung CHANG
  • Publication number: 20230249952
    Abstract: The present invention relates to an integrated lifting control system for controlling horizontal maintenance and loads of weights lifted vertically, the integrated lifting control system including: power units for supplying hydraulic or pneumatic pressures to hydraulic/pneumatic jacks as strand jacks for lifting the weights as unit weights to installation positions; the hydraulic/pneumatic jacks each having a CP block serving as a support stand and maintaining a strand wire in a vertical direction, a spherical or semispherical bearing installed on the CP block, and a load cell mounted on the strand wire to sense the loads of the weights; a main control panel connected to the power units and the hydraulic/pneumatic jacks; and a piperack connected to the strand wires of the hydraulic/pneumatic jacks.
    Type: Application
    Filed: May 11, 2022
    Publication date: August 10, 2023
    Inventor: Yung Hyun YOO
  • Patent number: 11715508
    Abstract: Methods, systems, and devices for a source follower-based sensing architecture and sensing scheme are described. In one example, a memory device may include a sense circuit that includes two source followers that are coupled to each other and to a sense amplifier. A method of operating the memory device may include transferring a digit line voltage to one of the source followers and transferring a reference voltage to the other source follower. After transferring the digit line voltage and the reference voltage, the source followers may be enabled so that signals representative of the digit line voltage and the reference voltage are transferred from the outputs of the source followers to the sense amplifier for sensing.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: August 1, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Hyun Yoo Lee, Suryanarayana B. Tatapudi, Huy T. Vo, Ferdinando Bedeschi, Umberto Di Vincenzo, Riccardo Muzzetto
  • Patent number: 11699375
    Abstract: A semiconductor device includes a semiconductor substrate including an active region defined in a well impurity layer having a first conductivity type, a gate electrode on the active region, and a gate insulating layer between the gate electrode and the active region. The active region includes a source region and a drain region at sides of the gate electrode, the source region and the drain region having a second conductivity type, a channel region between the source and drain regions, the channel region having the first conductivity type, a first halo region in contact with the source region and a second halo region in contact with the drain region, the first halo region and the second halo region having the first conductivity type, and a slit well region between the first and second halo regions, the slit well region having the first conductivity type.
    Type: Grant
    Filed: October 18, 2022
    Date of Patent: July 11, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hiroki Fujii, Jae-Hyun Yoo
  • Patent number: 11687407
    Abstract: Described apparatuses and methods provide error correction code (ECC) circuitry that is shared between two or more memory banks of a memory, such as a low-power dynamic random-access memory (DRAM). A memory device may include one or more dies, and a die can have multiple memory banks. The ECC circuitry can service at least two memory banks by producing ECC values based on respective data stored in the two memory banks. By sharing the ECC circuitry, instead of including a per-bank ECC engine, a total die area allocated to ECC functionality can be reduced. Thus, the ECC circuitry can be elevated from a one-bit ECC algorithm to a multibit ECC algorithm, which may increase data reliability. In some cases, memory architecture may operate in environments in which a masked-write command or an internal read-modify-write operation is precluded, including with shared ECC circuitry.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: June 27, 2023
    Assignee: Micron Technologies, Inc.
    Inventors: Kang-Yong Kim, Hyun Yoo Lee
  • Publication number: 20230168827
    Abstract: A memory controller that controls a memory device including a plurality of memory blocks allocated to a plurality of zones for storing data is provided. The memory controller comprises a plurality of processing cores controlling data operations in the plurality of zones in the memory device; and an external interface unit in communication with an external device and configured to receive, from the external device, a write request requesting to perform a write operation on a first zone in the memory device, the external interface unit configured to identify a first processing core for controlling the first zone and determine a second core to perform the write operation based on a number of open zones controlled by the first core and having an open state indicating a capability to execute a program operation.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 1, 2023
    Inventors: Dong Kyu LEE, Seung Geol BAEK, Jae Hyun YOO, Seon Ju LEE
  • Publication number: 20230167217
    Abstract: Disclosed is a graft copolymer, and a graft copolymer including a rubbery polymer, wherein the rubbery polymer includes a conjugated diene-based monomer unit and a soft domain, the graft copolymer includes an alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and an alkali metal sulfonate-based monomer unit, the soft domain is formed by including a mineral-based oil, the mineral-based oil includes 70 wt % to 100 wt % of a mineral oil and 0 wt % to 30 wt % of a silicone-based oil, the mineral-based oil is included in 0.2 parts by weight to 0.5 parts by weight based on 100 parts by weight of the rubbery polymer, and the alkali metal sulfonate-based monomer unit is included in 0.8 wt % to 1.5 wt % based on the graft copolymer, a method for preparing the same, and a resin composition including the same.
    Type: Application
    Filed: April 19, 2021
    Publication date: June 1, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Sang Il Nam, Ki Hyun Yoo, Yoon Ho Kim, Kwang Jin Lee
  • Publication number: 20230154520
    Abstract: Disclosed herein is an apparatus that includes a plurality of memory banks and a refresh controller configured to perform a refresh operation on one or more of the plurality of memory banks having a first state without performing the refresh operation on one or more of the plurality of memory banks having a second state responsive to a first refresh command, and perform the refresh operation on a selected one of the plurality of memory banks responsive to a second refresh command. The refresh controller is configured to bring the selected one of the plurality of memory banks into the second state when the refresh operation is performed responsive to the second refresh command.
    Type: Application
    Filed: November 15, 2021
    Publication date: May 18, 2023
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Atsushi Hatakeyama, Hyun Yoo Lee, Kang-Yong Kim, Akiyoshi Yamamoto
  • Publication number: 20230152236
    Abstract: Apparatus for laser induced ablation spectroscopy (LIBS) is disclosed. An apparatus can have a computer, a pulsed laser and a lightguide fiber bundle that is subdivided into branches. One branch can convey a first portion of the light to a first optical spectrometer and a different branch can convey a second portion of the light to another optical spectrometer. The first spectrometer can be relatively wideband to analyze a relative wide spectral segment and the other spectrometer can be high dispersion to measure minor concentrations. The apparatus can further comprise an unbranched lightguide fiber bundle to provide more light to a low sensitivity spectrometer. The apparatus can include an inductively coupled plasma mass spectrometer ICP-MS and a computer instructions operable to provide normalized LIBS/ICP-MS composition analyses.
    Type: Application
    Filed: January 17, 2023
    Publication date: May 18, 2023
    Applicant: Applied Spectra, Inc.
    Inventors: Jong Hyun Yoo, Chunyi Liu, Richard E. Russo
  • Patent number: D990707
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: June 27, 2023
    Assignee: Steelcase Inc.
    Inventors: Mark McKenna, Brett Willink, Hyun Yoo, Nathan McCaughan, Cyril Joseph Mayne
  • Patent number: D997878
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: September 5, 2023
    Assignee: Steelcase Inc.
    Inventors: James Ludwig, Julie Yonehara, Hyun Yoo