Patents by Inventor Takahiro ONAGI

Takahiro ONAGI 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).

  • Memory system including parities written to dummy memory cell groups
    Patent number: 11699499
    Abstract: According to one embodiment, a memory system includes a memory controller and a nonvolatile memory with multiple planes each provided with multiple word lines, memory cell groups, dummy word lines, and dummy memory cell groups. The memory controller writes data to a memory cell group connected to a corresponding word line of any of the planes, such that a plane to which k-th data are to be written is different from a plane to which (k+m?1)-th data are to be written, and writes the parities to any of the dummy memory cell groups. The combinations of the data used for generating the different parities are different from each other.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: July 11, 2023
    Assignee: Kioxia Corporation
    Inventors: Tsukasa Tokutomi, Kiwamu Watanabe, Riki Suzuki, Toshikatsu Hida, Takahiro Onagi
  • MEMORY SYSTEM
    Publication number: 20220076773
    Abstract: According to one embodiment, a memory system includes a memory controller and a nonvolatile memory with multiple planes each provided with multiple word lines, memory cell groups, dummy word lines, and dummy memory cell groups. The memory controller writes data to a memory cell group connected to a corresponding word line of any of the planes, such that a plane to which k-th data are to be written is different from a plane to which (k+m?1)-th data are to be written, and writes the parities to any of the dummy memory cell groups. The combinations of the data used for generating the different parities are different from each other.
    Type: Application
    Filed: February 26, 2021
    Publication date: March 10, 2022
    Inventors: Tsukasa TOKUTOMI, Kiwamu WATANABE, Riki SUZUKI, Toshikatsu HIDA, Takahiro ONAGI