Patents by Inventor Akihiko Mouri

Akihiko Mouri 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).

  • Data storage device and data management method in data storage device
    Patent number: 8082409
    Abstract: In one embodiment, a HDD creates a segment table to associate an address of user data in a flash memory with an LBA in a magnetic disk. The HDD updates the segment table in a DRAM and saves it to the flash memory at a specific timing. The HDD creates journals indicating the update of the segment table and saves it to the flash memory. The latest segment table can be restored using the segment table and the journals in the flash memory.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: December 20, 2011
    Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
    Inventors: Shuhji Yamada, Toshio Kakihara, Katsuhiro Imoto, Akihiko Mouri
  • Data storage device and data management method in data storage device
    Publication number: 20090216943
    Abstract: Embodiments of the present invention improve efficiency in saving log data in a hard disk drive (HDD) equipped with a magnetic disk and a flash memory,. In an aspect of one embodiment of the present invention, a HDD creates a segment table to associate an address of user data in a flash memory with an LBA in a magnetic disk. The HDD updates the segment table in a DRAM and saves it to the flash memory at a specific timing. The HDD creates journals indicating the update of the segment table and saves it to the flash memory. The latest segment table can be restored using the segment table and the journals in the flash memory.
    Type: Application
    Filed: February 23, 2009
    Publication date: August 27, 2009
    Applicant: Hitachi Global Storage Technologies Netherlands B. V.
    Inventors: Shuhji Yamada, Toshio Kakihara, Katsuhiro Imoto, Akihiko Mouri
  • Disk drive device and method for saving a table for managing data in non-volatile semiconductor memory in disk drive device
    Publication number: 20090019216
    Abstract: Embodiments of the present invention help to suppress adverse effects on the host computer operation caused by saving a segment table. According to one embodiment, a hard disk drive (HDD) creates a segment table to associate addresses of user data in a flash memory with LBAs in a magnetic disk. The HDD updates the segment table in a DRAM and saves it to the flash memory at a specific timing. The HDD creates a journal indicating an update of the segment table and saves it to the flash memory. The segment table and the journal in the flash memory enable the latest segment table to be restored. If the HDD receives a predetermined command from a host computer, it saves the segment table in the DRAM into the flash memory.
    Type: Application
    Filed: July 15, 2008
    Publication date: January 15, 2009
    Inventors: Shuhji Yamada, Toshio Kakihara, Tsuyoshi Satoh, Tsuneo Hirose, Kazuhiko Satake, Katsuhiro Imoto, Akihiko Mouri, Shunsuke Kagaya, Shingo Ito
  • Swivelling working vehicle
    Patent number: 4680929
    Abstract: A working vehicle having a working device mounted on a swivel base rotated by a hydraulic motor. There is provided a control system which causes the swivel base to start and stop smoothly at highest possible standard speeds which are preset for an entire swivelling range.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: July 21, 1987
    Assignee: Kubota, Ltd.
    Inventors: Akihiko Mouri, Kazushige Ikeda
  • Excavating vehicle
    Patent number: 4552503
    Abstract: An excavating vehicle according to the present invention comprises an excavating apparatus rotated by a hydraulic actuator, said excavating apparatus being stopped automatically and smoothly at predetermined positions with a simple operation.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: November 12, 1985
    Assignee: Kubota, Ltd.
    Inventors: Akihiko Mouri, Yoshinobu Tabuchi, Akira Tsuda, Masahiro Tsutsumi, Kazushige Ikeda