Patents by Inventor Akio Shimada

Akio Shimada 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).

  • METHOD AND SYSTEM FOR TRANSFERRING DUPLICATE FILES IN HIERARCHICAL STORAGE MANAGEMENT SYSTEM
    Publication number: 20110078112
    Abstract: In order to provide HSM that can effectively use the storage capacity of an upper Tier in an HSM system, a lower Tier of the HSM system detects a group of files having the same data content from a plurality of files stored in the lower Tier, and keeps at least one of the real data of the group of files having the same data content while deleting the rest of the data. The upper Tier receives the process result from the lower Tier. Then, in response to a read request from the host computer that specifies a file included in the group of files and transferred to the upper Tier from the lower Tier, the upper Tier identifies the at least one of the data that is kept and corresponding to the specified file, and responds to the host computer.
    Type: Application
    Filed: December 18, 2009
    Publication date: March 31, 2011
    Inventors: Masanori TAKATA, Hitoshi Kamei, Atsushi Sutoh, Takahiro Nakano, Nobumitsu Takaoka, Akio Shimada
  • HIERARCHICAL STORAGE SYSTEM AND COPY CONTROL METHOD OF FILE FOR HIERARCHICAL STORAGE SYSTEM
    Publication number: 20110035409
    Abstract: An interface for controlling an inhibition of a recall is prepared for an application, and a judgment of necessity of a recall is informed of to a hierarchical storage before the application executes an access to a file.
    Type: Application
    Filed: October 7, 2009
    Publication date: February 10, 2011
    Inventors: Akio SHIMADA, Etsutaro Akagawa, Hitoshi Kamei, Nobumitsu Takaoka, Atsushi Sutoh, Masakuni Agetsuma