Patents by Inventor Jun-ichi Ninamino

Jun-ichi Ninamino 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).

  • Method and apparatus for recording data on an optical disk and or groove
    Patent number: 5850378
    Abstract: According to the present invention, an optical disk recording method for recording data on an optical disk including a land and a groove by forming a mark representing the data on the optical disk by irradiating a light beam onto the optical disk is provided. In this method, conditions for irradiating the light beam are varied depending upon whether a position at which the mark representing the data is formed on the land or on the groove so that a size of the mark formed on the land is equal to a size of the mark formed on the groove.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: December 15, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Jun-ichi Ninamino, Shigeru Furumiya, Kenji Koishi, Yuichi Kamioka