Patents by Inventor Do-Hun Kim

Do-Hun 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: 20230061014
    Abstract: A lower sheet disposed below a display panel includes a heat radiation layer having a first side and a second side facing the first side. A first film layer is disposed on the first side of the heat radiation layer. A second film layer is disposed on the second side of the heat radiation layer. A first resin layer is disposed between the heat radiation layer and the first film layer. A second resin layer is disposed between the heat radiation layer and the second film layer. A sealing layer is disposed on lateral sides of the heat radiation layer. The sealing layer directly contacts an entirety of the lateral sides of the heat radiation layer, and directly contacts at least a portion of lateral sides of the first resin layer and the second resin layer.
    Type: Application
    Filed: April 29, 2022
    Publication date: March 2, 2023
    Inventors: Jae-Hwan JEON, Byung-Gon Kum, Da Woon Kim, Do Hun Kim, Hyun Su Park, Ji Sang Seo
  • Patent number: 11573891
    Abstract: An electronic device includes a memory controller having an improved operation speed. The memory controller includes a processor configured to generate commands for accessing data stored in a main memory, a scheduling circuit configured to store the commands and output the commands according to a preset criterion, and a filtering circuit configured to store information on an address of the main memory corresponding to a write command among the commands, provide a pre-completion response for the write command to the scheduling circuit upon receiving the write command, and provide the write command to the main memory.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 7, 2023
    Assignee: SK hynix Inc.
    Inventors: Do Hun Kim, Ju Hyun Kim, Jin Yeong Kim
  • Patent number: 11550659
    Abstract: A controller includes an Error Correction Code (ECC) encoder adding a first parity to data to generate a data set, and encoding the data set to generate a first parity data set, a buffer temporarily storing the first parity data set, an ECC decoder decoding the first parity data set received from the buffer to generate a decoded data set, a first checker performing a Low Density Parity Check (LDPC) encoding on the decoded data set to generate an LDPC data set to which a second parity is added, and a second checker performing a syndrome check operation on the LDCP data set including the first and second parities.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: January 10, 2023
    Assignee: SK hynix Inc.
    Inventor: Do Hun Kim
  • Publication number: 20220404972
    Abstract: An operation method includes buffering data chunks to be programmed in the multi-level cells in a write buffer; backing up at least one backup data chunk of the data chunks to a backup memory; determining a program sequence of the data chunks, the program sequence for programming a non-backup data chunk among the data chunks to the multi-level cells through a second step program operation of the multi-step program operation; and controlling the memory device to program the data chunks in the multi-level cells, based on the program sequence, by performing first and second step program operations of the multi-step program operation in a first page of the multi-level cells, the second step program operation performed in the first page later than another first step program operation performed in a second page subsequent to the first page.
    Type: Application
    Filed: November 29, 2021
    Publication date: December 22, 2022
    Inventors: Jae Wan YEON, Do Hun KIM, Ju Hyun KIM, Jin Yeong KIM
  • Patent number: 11494313
    Abstract: A storage device having improved operation speed may include a main memory configured to store first to N-th meta data, a cache memory including first to N-th dedicated areas respectively corresponding to areas in which the first to N-th meta data are stored, and a processor configured to store data accessed according to requests provided from a host among the first to N-th meta data in the first to N-th dedicated areas, respectively. A size of the first to N-th dedicated areas may be determined according to the number of times each of the first to N-th meta data is accessed by the requests.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: November 8, 2022
    Assignee: SK hynix Inc.
    Inventor: Do Hun Kim
  • Publication number: 20220334922
    Abstract: A controller includes an Error Correction Code (ECC) encoder adding a first parity to data to generate a data set, and encoding the data set to generate a first parity data set, a buffer temporarily storing the first parity data set, an ECC decoder decoding the first parity data set received from the buffer to generate a decoded data set, a first checker performing a Low Density Parity Check (LDPC) encoding on the decoded data set to generate an LDPC data set to which a second parity is added, and a second checker performing a syndrome check operation on the LDCP data set including the first and second parities.
    Type: Application
    Filed: June 28, 2022
    Publication date: October 20, 2022
    Inventor: Do Hun KIM
  • Patent number: 11449235
    Abstract: The present technology relates to an electronic device. According to the present technology, a storage device having an improved operation speed may include a nonvolatile memory device, a main memory configured to temporarily store data related to controlling the nonvolatile memory device, and a memory controller configured to control the nonvolatile memory device and the main memory under control of an external host. The main memory may aggregate and process a number of write transactions having continuous addresses, among write transactions received from the memory controller, equal to a burst length unit of the main memory.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: September 20, 2022
    Assignee: SK hynix Inc.
    Inventors: Do Hun Kim, Kwang Sun Lee
  • Publication number: 20220269605
    Abstract: The present technology relates to an electronic device. According to the present technology, a storage device having an improved operation speed may include a nonvolatile memory device, a main memory configured to temporarily store data related to controlling the nonvolatile memory device, and a memory controller configured to control the nonvolatile memory device and the main memory under control of an external host. The main memory may aggregate and process a number of write transactions having continuous addresses, among write transactions received from the memory controller, equal to a burst length unit of the main memory.
    Type: Application
    Filed: May 11, 2022
    Publication date: August 25, 2022
    Inventors: Do Hun KIM, Kwang Sun LEE, Gi Jo JEONG
  • Patent number: 11422889
    Abstract: A memory system includes: a nonvolatile memory device; a processor configured to generate a first map chunk including mapping information for accessing the nonvolatile memory device; a first error correction code (ECC) component configured to generate a first map codeword by adding a first parity bit to the first map chunk; a volatile memory configured to store the first map codeword; a second ECC component configured to generate first map data by performing decoding on the first map codeword that is outputted from the volatile memory and bypasses the first ECC component when the memory system is powered off; and a direct memory access (DMA) component configured to provide the first map data to the nonvolatile memory device.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: August 23, 2022
    Assignee: SK hynix Inc.
    Inventor: Do Hun Kim
  • Patent number: 11422738
    Abstract: A data storage device includes a storage, a buffer memory, and a controller. The controller is configured to control at least one of an input of data to and an output of data from the storage in response to a request transmitted from a host device. The controller is also configured to receive write data transmitted from the host device and cached in the buffer memory, encrypt the write data, and store the encrypted write data in the storage. The controller is further configured to receive read data read from the storage and cached in the buffer memory, decrypt the read data, and provide the decrypted read data to the host device.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: August 23, 2022
    Assignee: SK hynix Inc.
    Inventors: Hyung Min Kim, Do Hun Kim, Jae Han Park
  • Patent number: 11416401
    Abstract: Embodiments of the disclosed technology relate to a memory system and an operating method thereof. According to the embodiments of the disclosed technology, the memory system may check N flag sets corresponding to N cache lines configured to cache map data,—Each flag set includes M flags, each flag indicating whether or not a cache hit for indicating a particular piece of data being stored in the map cache has been made for each of the M data units included in a corresponding cache line—may check target map data based on a number of flags indicating the cache hit for a corresponding data unit and included in the first flag set corresponding to the first cache line among the N cache lines.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: August 16, 2022
    Assignee: SK hynix Inc.
    Inventor: Do Hun Kim
  • Patent number: 11403174
    Abstract: A controller includes an Error Correction Code (ECC) encoder adding a first parity to data to generate a data set, and encoding the data set to generate a first parity data set, a buffer temporarily storing the first parity data set, an ECC decoder decoding the first parity data set received from the buffer to generate a decoded data set, a first checker performing a Low Density Parity Check (LDPC) encoding on the decoded data set to generate an LDPC data set to which a second parity is added, and a second checker performing a syndrome check operation on the LDCP data set including the first and second parities.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: August 2, 2022
    Assignee: SK hynix Inc.
    Inventor: Do Hun Kim
  • Patent number: 11402997
    Abstract: The present technology relates to an electronic device. According to the present technology, a storage device having an improved operation speed may include a nonvolatile memory device, a main memory configured to temporarily store data related to controlling the nonvolatile memory device, and a memory controller configured to control the nonvolatile memory device and the main memory under control of an external host. The main memory may aggregate and process a number of write transactions having continuous addresses, among write transactions received from the memory controller, equal to a burst length unit of the main memory.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: August 2, 2022
    Assignee: SK hynix Inc.
    Inventors: Do Hun Kim, Kwang Sun Lee
  • Publication number: 20220209270
    Abstract: Provided is a gas diffusion layer, in which a microporous layer has an inner wall of through passages and a region adjacent to the through passages containing a greater amount of a water-repellent binder resin than a region not adjacent to the through passages, and thus water formed by an electrochemical reaction is effectively discharged from the gas diffusion layer. When the gas diffusion layer of the present invention is used, an optimal water management may be possible for smooth operation under all humidity conditions including a high humidity condition and a low humidity condition, and thus a fuel cell having improved cell performance may be obtained.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 30, 2022
    Inventors: Eun Sook Lee, Jy Young Jyoung, Na Hee Kang, Do Hun Kim, Jong Sik Ryu
  • Patent number: 11372766
    Abstract: Disclosed are a memory system, a memory controller, and a method of operating the memory system. The memory system may configure a plurality of map cache pools for caching map data of different types, respectively, within a map cache in which the map data is cached, configure a timer in a first map cache pool among the plurality of map cache pools, and write map data cached in the first map cache pool in the memory device based on the timer.
    Type: Grant
    Filed: February 13, 2021
    Date of Patent: June 28, 2022
    Assignee: SK hynix Inc.
    Inventors: Do Hun Kim, Ju Hyun Kim
  • Patent number: 11366763
    Abstract: A controller, a memory system and an operating method thereof are disclosed. The controller controls a nonvolatile memory device and the nonvolatile memory includes a first memory module configured to store a plurality of pieces of map data read from the nonvolatile memory device; and a second memory module configured to cache map data having locality among map data received from the first memory module.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: June 21, 2022
    Assignee: SK hynix Inc.
    Inventor: Do Hun Kim
  • Patent number: 11355210
    Abstract: Embodiments of the present disclosure relate to a memory system and an operating method thereof. According to the embodiments of the present disclosure, the memory system may store target data to be programmed in a memory device in a first memory, selectively store the target data in a second memory, program the target data stored in the first memory into the memory device, and reprogram the target data stored in the first memory or the second memory into the memory device when the programming of the target data stored in the first memory into the memory device fails. The buffer circuit may input the target data input from the memory controller into the second memory or discard the target data.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: June 7, 2022
    Assignee: SK hynix Inc.
    Inventors: Do Hun Kim, Kwang Sun Lee, Ju Hyun Kim, Jin Yeong Kim
  • Patent number: 11347400
    Abstract: The present technology relates to an electronic device. According to the present technology, a storage device having an improved operation speed may include a nonvolatile memory device, a main memory configured to temporarily store data related to controlling the nonvolatile memory device, and a memory controller configured to control the nonvolatile memory device and the main memory under control of an external host. The main memory may aggregate and process a number of write transactions having continuous addresses, among write transactions received from the memory controller, equal to a burst length unit of the main memory.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: May 31, 2022
    Assignee: SK hynix Inc.
    Inventors: Do Hun Kim, Kwang Sun Lee
  • Publication number: 20220156002
    Abstract: A controller for controlling a memory device is provided to include: a request receiver configured to receive a request including a logical address from a host; a dependency checker configured to acquire the request from the request receiver and check a dependency of the request; a map manager configured to generate a command including a physical address mapped to the logical address of the request in response to a result of checking that the request has no dependency on the prior incomplete request; and a command submitter configured to provide the memory device with the command generated by the map manager, wherein the request receiver, the dependency checker, the map manager and the command submitter are structured to configure a data pipeline such that operations of the request receiver, the dependency checker, the map manager, and the command submitter deliver are performed in series.
    Type: Application
    Filed: April 9, 2021
    Publication date: May 19, 2022
    Inventors: Ju Hyun KIM, Do Hun KIM, Jin Yeong KIM, Kee Bum SHIN, Jae Wan YEON, Kwang Sun LEE
  • Patent number: 11314013
    Abstract: A backlight unit includes a light source array including at least one light source which emits light and a circuit board on which the light source is disposed, and a first optical layer disposed on the light source array. The first optical layer includes a first layer which defines at least one concave portion in a bottom of the first layer, where the at least one concave portion is coupled to the light source, a second layer disposed on the first layer, the second layer guiding light incident from the first layer in one direction, a plurality of optical patterns disposed on one surface of the second layer, the plurality of optical patterns selectively emitting light passing through the one surface, and a reflective layer disposed on the bottom of the first layer.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Yong Ryu, Do Hun Kim, Taek Sun Shin, Jae Sul An, Byung Seo Yoon