Patents by Inventor Masanao Tsuboki

Masanao Tsuboki 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).

  • External storage and data recovery method for external storage as well as program
    Publication number: 20040260966
    Abstract: The data is automatically recovered to a desired arbitrary point in an external storage without imposing a burden on the host computer.
    Type: Application
    Filed: February 10, 2004
    Publication date: December 23, 2004
    Inventors: Keiichi Kaiya, Masanao Tsuboki, Kazuhito Suishu
  • Storage system and method for data transfer between storage systems
    Patent number: 6810469
    Abstract: There is realized a storage system which can reduce the limitation of a device number used by a host CPU at the time of duplexing data. A micro processor of a source external storage controller unit unifies a plurality of write data received from the host CPU to the same data bus to provide one unit of data transmitting to a target storage system. A number not dependent on the device number used when the host CPU specifies a device is allocated to this. Then, the source external storage controller unit sends the write data to the target external storage controller unit. This can receive/send the data without depending on the target specifying device number.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: October 26, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Masanao Tsuboki, Masamitsu Takahashi, Katsunori Nakamura, Takahiko Takeda
  • Storage system and method for data transfer between storage systems
    Publication number: 20020062429
    Abstract: There is realized a storage system which can reduce the limitation of a device number used by a host CPU at the time of duplexing data. A micro processor of a source external storage controller unit unifies a plurality of write data received from the host CPU to the same data bus to provide one unit of data transmitting to a target storage system. A number not dependent on the device number used when the host CPU specifies a device is allocated to this. Then, the source external storage controller unit sends the write data to the target external storage controller unit. This can receive/send the data without depending on the target specifying device number.
    Type: Application
    Filed: August 3, 2001
    Publication date: May 23, 2002
    Inventors: Masanao Tsuboki, Masamitsu Takahashi, Katsunori Nakamura, Takahiko Takeda