Patents by Inventor Taro Iketaki

Taro Iketaki 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).

  • STORAGE DEVICE AND DATA PROCESSING METHOD
    Publication number: 20170109081
    Abstract: A storage device includes a nonvolatile memory unit, a volatile memory unit, a power supply control unit configured to control power supply to the nonvolatile memory unit and the volatile memory unit, and a control unit configured to control the power supply unit to cut off the power supply to the nonvolatile memory unit and the volatile memory unit during a first operation, and control the power supply unit to cut off the power supply to the nonvolatile memory unit and to maintain the power supply to the volatile memory unit during a second operation that is different from the first operation.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Inventor: Taro IKETAKI
  • Storage device and data processing method
    Patent number: 9569128
    Abstract: A storage device includes a nonvolatile memory unit, a volatile memory unit, a power supply control unit configured to control power supply to the nonvolatile memory unit and the volatile memory unit, and a control unit configured to control the power supply unit to cut off the power supply to the nonvolatile memory unit and the volatile memory unit during a first operation, and control the power supply unit to cut off the power supply to the nonvolatile memory unit and to maintain the power supply to the volatile memory unit during a second operation that is different from the first operation.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: February 14, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Taro Iketaki
  • STORAGE DEVICE AND DATA PROCESSING METHOD
    Publication number: 20160004471
    Abstract: A storage device includes a nonvolatile memory unit, a volatile memory unit, a power supply control unit configured to control power supply to the nonvolatile memory unit and the volatile memory unit, and a control unit configured to control the power supply unit to cut off the power supply to the nonvolatile memory unit and the volatile memory unit during a first operation, and control the power supply unit to cut off the power supply to the nonvolatile memory unit and to maintain the power supply to the volatile memory unit during a second operation that is different from the first operation.
    Type: Application
    Filed: November 24, 2014
    Publication date: January 7, 2016
    Inventor: Taro IKETAKI
  • Magnetic disk drive capable of refreshing data written to disk and data refresh method
    Patent number: 7870460
    Abstract: According to one embodiment, the controller controls a data refresh operation. The data refresh operation comprises a refresh-data read operation of reading L blocks of data by a head from a track to be refreshed on a disk, a data backup-write operation of writing the read data by the head to a backup-track on the disk, and a refresh-write operation of writing the read data by the head to the track to be refreshed after the backup-write operation. The controller sets the number L of blocks to a value that satisfies conditions for completing the backup-write operation and the refresh-write operation within a time corresponding to N revolutions of the disk from completion of the refresh-data read operation.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: January 11, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Taro Iketaki, Akio Mizuno, Yasuhiko Ichikawa, Takao Aoki
  • MAGNETIC DISK DRIVE CAPABLE OF REFRESHING DATA WRITTEN TO DISK AND DATA REFRESH METHOD
    Publication number: 20100165502
    Abstract: According to one embodiment, the controller controls a data refresh operation. The data refresh operation comprises a refresh-data read operation of reading L blocks of data by a head from a track to be refreshed on a disk, a data backup-write operation of writing the read data by the head to a backup-track on the disk, and a refresh-write operation of writing the read data by the head to the track to be refreshed after the backup-write operation. The controller sets the number L of blocks to a value that satisfies conditions for completing the backup-write operation and the refresh-write operation within a time corresponding to N revolutions of the disk from completion of the refresh-data read operation.
    Type: Application
    Filed: October 29, 2009
    Publication date: July 1, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Taro Iketaki, Akio Mizuno, Yasuhiko Ichikawa, Takao Aoki