Patents by Inventor Yoshiyuki Namba

Yoshiyuki Namba 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).

  • Magneto-optical recording method and apparatus for recording information on a magneto-optical recording media
    Patent number: 5381396
    Abstract: A process for recording information on a magneto-optical recording medium according to a (2, 7) RLL modulated signal includes a step of setting an optical power of a laser beam to a high level state in response to a logic value "1" and a step of alternately switching the optical power of the laser beam between the high level state and a low level state in correspondence to a logic value "0" except for the bit that is immediately adjacent to the bit of the logic value "1.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: January 10, 1995
    Assignee: Fujitsu Limited
    Inventors: Tsutomu Tanaka, Keiji Shono, Yoshiyuki Namba, Koji Matsumoto, Miyozo Maeda