Patents by Inventor Masuo Okumura

Masuo Okumura 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).

  • Data recording area signal generating method and apparatus
    Patent number: 4674071
    Abstract: The invention relates to a method and an apparatus for generating a data recording area signal in order to define an appointed data recording area on a data storing medium which has a multitude of sectors with high information density recorded by means of beam irradiation. The index signal derived from the detected index pattern in a sector is used together with a clock signal supplied.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: June 16, 1987
    Assignee: Olympus Optical Company Limited
    Inventors: Masuo Okumura, Ken Ohshima