Patents by Inventor Tatsuhiko Fukazawa

Tatsuhiko Fukazawa 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
    Patent number: 11310933
    Abstract: A storage device includes a casing; a drive that records data; a controller that controls a data processing of the drive; and a midplane that connects the drive to the controller, in which the midplane includes a plurality of split midplanes which are replaceable, a drive side connector is disposed on a drive side of the split midplane, and the drive side connector is connected to the drive.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: April 19, 2022
    Assignee: HITACHI, LTD.
    Inventors: Hibiki Suzuki, Yuichi Saigan, Tatsuhiko Fukazawa
  • STORAGE DEVICE
    Publication number: 20210144876
    Abstract: A storage device includes a casing; a drive that records data; a controller that controls a data processing of the drive; and a midplane that connects the drive to the controller, in which the midplane includes a plurality of split midplanes which are replaceable, a drive side connector is disposed on a drive side of the split midplane, and the drive side connector is connected to the drive.
    Type: Application
    Filed: March 4, 2020
    Publication date: May 13, 2021
    Inventors: Hibiki SUZUKI, Yuichi SAIGAN, Tatsuhiko FUKAZAWA
  • Memory data backup system and memory data backup control method
    Patent number: 8578110
    Abstract: A memory data backup system capable of shortening time required to back up data from a volatile memory to a nonvolatile memory is provided. A nonvolatile memory module 100 is mounted on the same bus 102 as a bus where an interface between a memory controller 52A and a volatile memory module 52 exists.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: November 5, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuhiko Fukazawa, Seiichi Abe
  • MEMORY DATA BACKUP SYSTEM AND MEMORY DATA BACKUP CONTROL METHOD
    Publication number: 20120089796
    Abstract: A memory data backup system capable of shortening time required to back up data from a volatile memory to a nonvolatile memory is provided. A nonvolatile memory module 100 is mounted on the same bus 102 as a bus where an interface between a memory controller 52A and a volatile memory module 52 exists.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 12, 2012
    Applicant: HITACHI, LTD.
    Inventors: Tatsuhiko Fukazawa, Seiichi Abe
  • Storage system with memories each having DIMMs daisy-chain connected to one another and control method thereof
    Patent number: 7493432
    Abstract: A storage system with excellent failure tolerance is provided. The storage system has redundant controllers. A first controller has a first memory for storing the data read/written from/to a storage device and control information concerning the reading/writing of data in the storage device. A second controller has a second memory for storing the data read/written from/to the storage device and control information concerning the reading/writing of data in the storage device. The first memory is structured so that it can be accessed from the second controller. The second memory is structured so that it can be accessed from the first controller.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: February 17, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuhiko Fukazawa, Seiichi Abe
  • Storage system and control method thereof
    Publication number: 20080147932
    Abstract: A storage system with excellent failure tolerance is provided. The storage system has redundant controllers. A first controller has a first memory for storing the data read/written from/to a storage device and control information concerning the reading/writing of data in the storage device. A second controller has a second memory for storing the data read/written from/to the storage device and control information concerning the reading/writing of data in the storage device. The first memory is structured so that it can be accessed from the second controller. The second memory is structured so that it can be accessed from the first controller.
    Type: Application
    Filed: November 28, 2006
    Publication date: June 19, 2008
    Inventors: Tatsuhiko Fukazawa, Seiichi Abe