Patents by Inventor Masahiko Katada

Masahiko Katada 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, method and program for protecting accommodated item such as cartridge
    Patent number: 8359986
    Abstract: The present invention relates to protection of accommodated items such as cartridges each incorporating recording media and enhances a protection function for the accommodated items. The present invention relates to protection of accommodated items accommodated in an accommodating shelf into/out of which accommodated items (cartridges) such as cartridges each incorporating recording media such as magnetic tapes can be put/taken.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: January 29, 2013
    Assignee: Fujitsu Limited
    Inventors: Yukio Sekiguchi, Masahiko Katada, Katsufumi Onaka, Takanobu Kashiwagi, Akira Nanba
  • APPARATUS, METHOD AND PROGRAM FOR PROTECTING ACCOMMODATED ITEM SUCH AS CARTRIDGE
    Publication number: 20080178783
    Abstract: The present invention relates to protection of accommodated items such as cartridges each incorporating recording media and enhances a protection function for the accommodated items. The present invention relates to protection of accommodated items accommodated in an accommodating shelf into/out of which accommodated items (cartridges) such as cartridges each incorporating recording media such as magnetic tapes can be put/taken.
    Type: Application
    Filed: November 30, 2007
    Publication date: July 31, 2008
    Inventors: Yukio SEKIGUCHI, Masahiko Katada, Katsufumi Onaka, Takanobu Kashiwagi, Akira Nanba
  • Redundancy communication control system and redundancy communication control method
    Publication number: 20070268835
    Abstract: A control unit for transmitting data to control the operation of a controlled unit transmits a command via a main control channel and a sub control channel. The controlled unit distinguishes via which channel of the main control channel and the sub control channel received data is received and determines whether received data maintains a constant value for a predetermined period of time or not. When it is determined that the received data maintains a constant value, data for distinguishing a channel via which data is received and data indicating that a failure has occurred in a channel are transmitted to the control unit via the other channel. Receiving data indicating that a failure has occurred, the control unit outputs data indicating that a failure has occurred to the outside, and transmits subsequent data using the sub control channel when a failure has occurred in the main control channel.
    Type: Application
    Filed: September 12, 2006
    Publication date: November 22, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Takanobu Kashiwagi, Masahiko Katada, Katsufumi Onaka, Yukio Sekiguchi, Akira Nanba, Hironao Konishi
  • Magnetic tape unit
    Patent number: 6344941
    Abstract: A magnetic tape unit includes a magnetic tape, a magnetic head, a phase-locked loop (PLL) and a desynchronized track detector. The magnetic tape is provided with a plurality of tracks. The magnetic head is arranged to simultaneously read out data from the tracks on the tape. The PLL is arranged to perform bit synchronization of data read out from each of the tracks on the tape. The detector is arranged to detect a desynchronized track by comparing transmission speeds of data read out from the respective tracks on the tape.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: February 5, 2002
    Assignee: Fujitsu Limited
    Inventors: Masahiko Katada, Yoshinori Nagai