Patents by Inventor Akihiro Iseno

Akihiro Iseno 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).

  • Magnetic tape storage apparatus writing status information to magnetic tape indicating a tape abnormality
    Patent number: 5525902
    Abstract: Magnetic tape storage apparatus including a drive unit for writing/reading information on and from a magnetic tape using a rotary head (RH) by the helical scan method and a storage control unit for controlling the drive unit.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: June 11, 1996
    Assignees: Fujitsu Limited, Sony Corporation
    Inventors: Toshiya Nakajima, Jun Takayama, Akihiro Iseno
  • Magnetic-tape storage apparatus
    Patent number: 5384673
    Abstract: A storage apparatus which performs writing and reading of data on a magnetic tape by the helical scan method using a rotary head, in particular one suited to use with a large-sized host computer, which storage apparatus includes mainly a storage control unit connected to the host computer and a drive unit for reading from and writing on the magnetic tape. System areas are formed on the magnetic tapes, which system areas have tables which include management information relating to the magnetic tapes themselves and able to be renewed by the storage control unit. By using these tables, the magnetic tapes can be easily accessed at a high speed, diagnosed as to trouble, and managed in data blocks.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: January 24, 1995
    Assignee: Fujitsu Limited
    Inventors: Junichi Yoshioka, Daijiro Okihara, Chiaki Yamauchi, Takashi Watanabe, Toshiya Nakajima, Madoka Ichikawa, Jun Takayama, Akihiro Iseno, Takeshi Ninomiya, Shinji Hamada