Patents by Inventor Masao Sugiki

Masao Sugiki 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 apparatus and power saving method thereof
    Patent number: 8009501
    Abstract: This storage apparatus includes an access history storage unit for storing, when there is a write request for writing data into the data storage unit or a read request for reading data stored in the data storage unit, history of the write request or read request as access history, an operational information storage unit for storing operational information showing whether the data storage unit is operating, an access prediction unit for predicting whether the data storage unit will be accessed based on the access history, and an operational control unit for performing operational control of pre-starting the data storage unit when the data storage unit is shut off and the access prediction unit predicts that the data storage unit will be accessed, or stopping the data storage unit when the data storage unit is operating and the access prediction unit predicts that the data storage unit will not be accessed.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: August 30, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Masao Sugiki, Chiaki Shoujima
  • Storage apparatus and power saving method thereof
    Publication number: 20090083558
    Abstract: This storage apparatus includes an access history storage unit for storing, when there is a write request for writing data into the data storage unit or a read request for reading data stored in the data storage unit, history of the write request or read request as access history, an operational information storage unit for storing operational information showing whether the data storage unit is operating, an access prediction unit for predicting whether the data storage unit will be accessed based on the access history, and an operational control unit for performing operational control of pre-starting the data storage unit when the data storage unit is shut off and the access prediction unit predicts that the data storage unit will be accessed, or stopping the data storage unit when the data storage unit is operating and the access prediction unit predicts that the data storage unit will not be accessed.
    Type: Application
    Filed: January 16, 2008
    Publication date: March 26, 2009
    Inventors: Masao Sugiki, Chiaki Shoujima