Patents by Inventor Chung Un NA

Chung Un NA 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).

  • Method and system for forming and using memory superblocks based on performance grades
    Patent number: 10747660
    Abstract: A memory system includes a plurality of memory devices, each including a plurality of memory blocks; and a controller configured to evaluate performance grades of the plurality of memory blocks, form super blocks spanning the plurality of memory devices by selecting memory blocks, among the plurality of memory blocks, to be included in each of the super blocks based on the performance grades, and write-access an opened super block, among the super blocks.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: August 18, 2020
    Assignee: SK hynix Inc.
    Inventors: Seung Gu Ji, Chung Un Na, Byeong Gyu Park
  • MEMORY SYSTEM AND OPERATING METHOD THEREOF
    Publication number: 20190196959
    Abstract: A memory system includes a plurality of memory devices, each including a plurality of memory blocks; and a controller configured to evaluate performance grades of the plurality of memory blocks, form super blocks spanning the plurality of memory devices by selecting memory blocks, among the plurality of memory blocks, to be included in each of the super blocks based on the performance grades, and write-access an opened super block, among the super blocks.
    Type: Application
    Filed: August 6, 2018
    Publication date: June 27, 2019
    Inventors: Seung Gu JI, Chung Un NA, Byeong Gyu PARK
  • DATA STORAGE DEVICE AND OPERATING METHOD THEREOF
    Publication number: 20160322087
    Abstract: A data storage device includes a nonvolatile memory apparatus including a plurality of pages coupled to a single word line; and a controller suitable for accessing the nonvolatile memory apparatus during one of first and second modes, wherein, the second mode is enabled when the nonvolatile memory apparatus has reached a lifetime limit, and wherein the controller stores the same data in both of a source page and a dummy page during the second mode.
    Type: Application
    Filed: September 1, 2015
    Publication date: November 3, 2016
    Inventor: Chung Un NA