Patents by Inventor Mineo Moribe

Mineo Moribe 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).

  • Optical recording medium having a non-volatile identification code and method for encoding data using same
    Patent number: 5661703
    Abstract: An optical recording medium in which a medium identification code is recorded by using a nonvolatile mark which is formed through irreversible change of a recording film, such as magnetization characteristic change, deformation and formation of a hole, so as to prevent illegal copy of the optical recording medium, and a recording/reproducing method for the same.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: August 26, 1997
    Assignee: Fujitsu Limited
    Inventors: Mineo Moribe, Haruhiko Izumi, Masakazu Taguchi, Iwao Tsugawa
  • Constant amplitude of tracking error signals generated from a head guide track and a performed track
    Patent number: 5402411
    Abstract: An optical disk is adapted for use in an optical disk unit which irradiates a light beam spot on a target track on the optical disk and controls tracking of the light beam spot based on a tracking error signal which is generated based on a reflected light beam from the optical disk. The optical disk includes a disk shaped substrate, a spiral or concentric guide tracks provided on the substrate, a writable region provided on the substrate between two mutually adjacent track turns of the guide track, and a preformed track provided within the guide track and prerecorded with read-only information in a form of variations of a topological feature.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: March 28, 1995
    Assignee: Fujitsu Limited
    Inventors: Miyozo Maeda, Mineo Moribe, Susumu Satoh, Kyoko Miyabe