Patents by Inventor Bunitsu Ando

Bunitsu Ando 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 system using multiple communication protocols
    Patent number: 8312312
    Abstract: A controller transmits a second protocol command to a target from among one or more switch devices. The second protocol command is a command which conforms to a second protocol type in which a connection established for transmitting a command to the target is broken during processing of the command by the target, and is defined as a command corresponding to a first protocol command, which is a command conforming to a first protocol type in which the connection remains established during processing of the command by the target.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: November 13, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Yoshihiro Oikawa, Ikuya Yagisawa, Bunitsu Ando
  • DATA STORAGE USING MULTIPLE PROTOCOLS
    Publication number: 20110125943
    Abstract: A controller transmits a second protocol command to a target from among one or more switch devices. The second protocol command is a command which conforms to a second protocol type in which a connection established for transmitting a command to the target is broken during processing of the command by the target, and is defined as a command corresponding to a first protocol command, which is a command conforming to a first protocol type in which the connection remains established during processing of the command by the target.
    Type: Application
    Filed: February 3, 2011
    Publication date: May 26, 2011
    Applicant: HITACHI, LTD.
    Inventors: Yoshihiro OIKAWA, Ikuya YAGISAWA, Bunitsu ANDO
  • Data storage using multiple protocols
    Patent number: 7904744
    Abstract: A controller transmits a second protocol command to a target from among one or more switch devices. The second protocol command is a command which conforms to a second protocol type in which a connection established for transmitting a command to the target is broken during processing of the command by the target, and is defined as a command corresponding to a first protocol command, which is a command conforming to a first protocol type in which the connection remains established during processing of the command by the target.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: March 8, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yoshihiro Oikawa, Ikuya Yagisawa, Bunitsu Ando
  • Storage control apparatus and method for controlling number of commands executed in storage control apparatus
    Patent number: 7685342
    Abstract: A storage control apparatus of the present invention controls the number of multiple commands issued from a host machine without shutting down the host machine. A communication port of the storage control apparatus carries out communications with the hosts in accordance with the iSCSI protocol. Command processing resources are managed for each communication port. A resource allocation control part calculates the number of commands capable of being received on the basis of the remaining amount of command processing resources inside shared port resources, a change in the number of commands received from a host, communication delay time, and the state of execution of a command issued from a host or the like. A MaxCmdSN is calculated by adding the results of command processing by a command execution part and the receivable number calculated by the resource allocation control part to the value of the latest CmdSN received from a host.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: March 23, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Shinjiro Shiraki, Koji Iwamitsu, Hidekazu Aoyama, Bunitsu Ando
  • Storage system
    Publication number: 20080244098
    Abstract: A controller transmits a second protocol command to a target from among one or more switch devices. The second protocol command is a command which conforms to a second protocol type in which a connection established for transmitting a command to the target is broken during processing of the command by the target, and is defined as a command corresponding to a first protocol command, which is a command conforming to a first protocol type in which the connection remains established during processing of the command by the target.
    Type: Application
    Filed: January 14, 2008
    Publication date: October 2, 2008
    Inventors: Yoshihiro Oikawa, Ikuya Yagisawa, Bunitsu Ando
  • Storage control apparatus and method for controlling number of commands executed in storage control apparatus
    Publication number: 20080005490
    Abstract: A storage control apparatus of the present invention controls the number of multiple commands issued from a host machine without shutting down the host machine. A communication port of the storage control apparatus carries out communications with the hosts in accordance with the iSCSI protocol. Command processing resources are managed for each communication port. A resource allocation control part calculates the number of commands capable of being received on the basis of the remaining amount of command processing resources inside shared port resources, a change in the number of commands received from a host, communication delay time, and the state of execution of a command issued from a host or the like. A MaxCmdSN is calculated by adding the results of command processing by a command execution part and the receivable number calculated by the resource allocation control part to the value of the latest CmdSN received from a host.
    Type: Application
    Filed: July 31, 2006
    Publication date: January 3, 2008
    Inventors: Shinjiro Shiraki, Koji Iwamitsu, Hidekazu Aoyama, Bunitsu Ando