Patents by Inventor Masao Fukuchi

Masao Fukuchi 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).

  • Disk control device and method processing variable-block and fixed-block accesses from host devices
    Patent number: 6772283
    Abstract: The present intention is a disk control device and control method sharing an FBA disk unit between mainframes (global servers) using a variable-block format and open servers using a fixed-block format and which are host devices. The first host device using the variable-block format and the second host device using the fixed-block format connect individually through a dedicated first channel adapter and second channel adapter, respectively. The disk control device includes a conversion function between the variable-block format of the first host device and the fixed-block format of the disk unit. In addition, the second channel adapter includes a conversion function between the fixed-block format of the second host device and the variable-block format of the disk control device. These functions enable the first host device using the variable-block format and the second host device using the fixed-block format to share the resources of the disk unit.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: August 3, 2004
    Assignee: Fujitsu Limited
    Inventors: Yuichi Taroda, Masao Fukuchi, Wasako Takahashi
  • Disk control device and method processing variable-block and fixed-block accesses from host devices
    Publication number: 20030088732
    Abstract: The present intention is a disk control device and control method sharing an FBA disk unit between mainframes (global servers) using a variable-block format and open servers using a fixed-block format and which are host devices. The first host device using the variable-block format and the second host device using the fixed-block format connect individually through a dedicated first channel adapter and second channel adapter, respectively. The disk control device includes a conversion function between the variable-block format of the first host device and the fixed-block format of the disk unit. In addition, the second channel adapter includes a conversion function between the fixed-block format of the second host device and the variable-block format of the disk control device. These functions enable the first host device using the variable-block format and the second host device using the fixed-block format to share the resources of the disk unit.
    Type: Application
    Filed: December 9, 2002
    Publication date: May 8, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Yuichi Tadroda, Masao Fukuchi, Wasako Takahashi
  • Disk control device and method processing variable-block and fixed-block accesses from host devices
    Patent number: 6505273
    Abstract: The present invention is a disk control device and control method sharing an FBA disk unit between mainframes (global servers) using a variable-block format and open servers using a fixed-block format and which are host devices. The first host device using the variable-block format and the second host device using the fixed-block format connect individually through a dedicated first channel adapter and second channel adapter, respectively. The disk control device includes a conversion function between the variable-block format of the first host device and the fixed-block format of the disk unit. In addition, the second channel adapter includes a conversion function between the fixed-block format of the second host device and the variable-block format of the disk control device. These functions enable the first host device using the variable-block format and the second host device using the fixed-block format to share the resources of the disk unit.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: January 7, 2003
    Assignee: Fujitsu Limited
    Inventors: Yuichi Taroda, Masao Fukuchi, Wasako Takahashi
  • DISK CONTROL DEVICE AND METHOD PROCESSING VARIABLE-BLOCK AND FIXED-BLOCK ACCESSES FROM HOST DEVICES
    Publication number: 20010014929
    Abstract: The present invention is a disk control device and control method sharing an FBA disk unit between mainframes (global servers) using a variable-block format and open servers using a fixed-block format and which are host devices. The first host device using the variable-block format and the second host device using the fixed-block format connect individually through a dedicated first channel adapter and second channel adapter, respectively. The disk control device includes a conversion function between the variable-block format of the first host device and the fixed-block format of the disk unit. In addition, the second channel adapter includes a conversion function between the fixed-block format of the second host device and the variable-block format of the disk control device. These functions enable the first host device using the variable-block format and the second host device using the fixed-block format to share the resources of the disk unit.
    Type: Application
    Filed: November 24, 1998
    Publication date: August 16, 2001
    Inventors: YUICHI TARODA, MASAO FUKUCHI, WASAKO TAKAHASHI