Patents by Inventor Erika IKEDA

Erika IKEDA 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 which transfers management information between first and second memories in a burst mode before a read process is performed on a third memory
    Patent number: 10310744
    Abstract: According to one embodiment, a memory system includes a first memory, a second memory, a third memory, a data transmission controller, and a processing unit. The second memory is configured to store first management information to manage the first memory. The third memory is configured to be accessed at a speed higher than the second memory. The processing unit causes the data transmission controller to transmit second management information and third management information from the second memory to the third memory in a burst mode before a read process is performed on the first memory. The second management information and the third management information are related to the read process and are included in the first management information. The processing unit performs the read process on the first memory using the second management information and the third management information stored in the third memory.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: June 4, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Erika Ikeda, Yoshihisa Kojima
  • Electronic device, and capacitor capacitance detection method applied to the same
    Patent number: 9882410
    Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: January 30, 2018
    Assignee: Toshiba Memory Corporation
    Inventors: Erika Ikeda, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima
  • MEMORY SYSTEM
    Publication number: 20170046076
    Abstract: According to one embodiment, a memory system includes a first memory, a second memory, a third memory, a data transmission controller, and a processing unit. The second memory is configured to store first management information to manage the first memory. The third memory is configured to be accessed at a speed higher than the second memory. The processing unit causes the data transmission controller to transmit second management information and third management information from the second memory to the third memory in a burst mode before a read process is performed on the first memory. The second management information and the third management information are related to the read process and are included in the first management information. The processing unit performs the read process on the first memory using the second management information and the third management information stored in the third memory.
    Type: Application
    Filed: October 27, 2016
    Publication date: February 16, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Erika IKEDA, Yoshihisa KOJIMA
  • Memory system which transfers management information between first and second memories in a burst mode before a read process is performed on a third memory
    Patent number: 9483411
    Abstract: According to one embodiment, a memory system includes a first memory, a second memory, a third memory, a data transmission controller, and a processing unit. The second memory is configured to store first management information to manage the first memory. The third memory is configured to be accessed at a speed higher than the second memory. The processing unit causes the data transmission controller to transmit second management information and third management information from the second memory to the third memory in a burst mode before a read process is performed on the first memory. The second management information and the third management information are related to the read process and are included in the first management information. The processing unit performs the read process on the first memory using the second management information and the third management information stored in the third memory.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: November 1, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Erika Ikeda, Yoshihisa Kojima
  • ELECTRONIC DEVICE, AND CAPACITOR CAPACITANCE DETECTION METHOD APPLIED TO THE SAME
    Publication number: 20150280481
    Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 1, 2015
    Inventors: Erika Ikeda, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima
  • MEMORY SYSTEM
    Publication number: 20150254177
    Abstract: According to one embodiment, a memory system includes a first memory, a second memory, a third memory, a data transmission controller, and a processing unit. The second memory is configured to store first management information to manage the first memory. The third memory is configured to be accessed at a speed higher than the second memory. The processing unit causes the data transmission controller to transmit second management information and third management information from the second memory to the third memory in a burst mode before a read process is performed on the first memory. The second management information and the third management information are related to the read process and are included in the first management information. The processing unit performs the read process on the first memory using the second management information and the third management information stored in the third memory.
    Type: Application
    Filed: August 28, 2014
    Publication date: September 10, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Erika IKEDA, Yoshihisa KOJIMA
  • Electronic device, and capacitor capacitance detection method applied to the same
    Patent number: 9097747
    Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: August 4, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Erika Ikeda, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima
  • ELECTRONIC DEVICE, AND CAPACITOR CAPACITANCE DETECTION METHOD APPLIED TO THE SAME
    Publication number: 20120161792
    Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.
    Type: Application
    Filed: November 28, 2011
    Publication date: June 28, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Erika IKEDA, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima