Patents by Inventor Noboru ISHIWATA

Noboru ISHIWATA 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).

  • APPARATUS AND METHOD TO CONTROL POWER-SUPPLY TO A MEMORY BASED ON DATA-ACCESS STATES OF INDIVIDUAL MEMORY BLOCKS INCLUDED THEREIN
    Publication number: 20180335827
    Abstract: An apparatus includes a memory configured to store target data including a data main-body and management information relating to the data main-body. The apparatus controls on and off of power supply to the memory in units of a power-supply block that is a memory block for storing a piece of data included in the data main-body or included in the management information. The apparatus turns off power supply to plural power-supply blocks in the memory, each of which stores a piece of data included in the data main-body. When a first access to the management information occurs, based on position information included in the management information, the apparatus turns on power supply to a first power-supply block that is a memory block storing a piece of data included in the data main-body which is to be accessed in connection with the first access.
    Type: Application
    Filed: May 15, 2018
    Publication date: November 22, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Noboru Ishiwata, Tomoyuki Kanayama, Yuzo KORI, Tomoharu Muro
  • Storage apparatus and controlling method of storage apparatus
    Patent number: 8683146
    Abstract: A storage apparatus including: a first controller that generates an access to a storage device; the first controller includes: a first relay unit configured to relay the access to the storage device; and an access control unit configured to be activated after activation of the first relay unit and to relay the access to the storage device via a second relay unit; and a second controller that includes the second relay unit and generates the access to the storage device, wherein when the first relay unit receives a connection request for an access path between the first relay unit and the storage device from the second controller, the first relay unit establishes the access path to the storage device irrespective of an activation state of the access control unit.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: March 25, 2014
    Assignee: Fujitsu Limited
    Inventors: Wataru Iizuka, Atsushi Ishii, Noboru Ishiwata, Masanori Itoh, Yoshihito Konta
  • STORAGE APPARATUS AND CONTROLLING METHOD OF STORAGE APPARATUS
    Publication number: 20120239888
    Abstract: A storage apparatus including: a first controller that generates an access to a storage device; the first controller includes: a first relay unit configured to relay the access to the storage device; and an access control unit configured to be activated after activation of the first relay unit and to relay the access to the storage device via a second relay unit; and a second controller that includes the second relay unit and generates the access to the storage device, wherein when the first relay unit receives a connection request for an access path between the first relay unit and the storage device from the second controller, the first relay unit establishes the access path to the storage device irrespective of an activation state of the access control unit.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 20, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Wataru IlZUKA, Atsushi ISHII, Noboru ISHIWATA, Masanori ITOH, Yoshihito KONTA