Patents by Inventor Megumu HORI

Megumu HORI 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).

  • Semiconductor memory device
    Patent number: 10199099
    Abstract: A semiconductor memory device includes a first memory cell having a first end connected to a first wiring and a second end connected to a second wiring and a second memory cell having a first end connected to the first wiring and a second end connected to a third wiring. A sense amplifier is configured to: sense a first current flowing in the first wiring when a first voltage is applied to the second and third wirings and a second voltage, larger than the first voltage, is applied to the first wiring; and sense a second current flowing in the first wiring when a third voltage larger than the second voltage is applied to the first wiring, the first voltage to the second wiring, and the second voltage to the third wiring. The sense amplifier reads data according to a difference between the first current and the second current.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: February 5, 2019
    Assignee: Toshiba Memory Corporation
    Inventors: Megumu Hori, Yoshihisa Iwata
  • SEMICONDUCTOR MEMORY DEVICE
    Publication number: 20180277201
    Abstract: A semiconductor memory device includes a first memory cell having a first end connected to a first wiring and a second end connected to a second wiring and a second memory cell having a first end connected to the first wiring and a second end connected to a third wiring. A sense amplifier is configured to: sense a first current flowing in the first wiring when a first voltage is applied to the second and third wirings and a second voltage, larger than the first voltage, is applied to the first wiring; and sense a second current flowing in the first wiring when a third voltage larger than the second voltage is applied to the first wiring, the first voltage to the second wiring, and the second voltage to the third wiring. The sense amplifier reads data according to a difference between the first current and the second current.
    Type: Application
    Filed: September 1, 2017
    Publication date: September 27, 2018
    Inventors: Megumu HORI, Yoshihisa IWATA