Patents by Inventor Massayuki Hatanaka

Massayuki Hatanaka 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).

  • Apparatus, a system and method for controlling access to contents
    Patent number: 7028340
    Abstract: The apparatus controls access to the contents. The apparatus comprises MO device, MPEG2 decoder, and MO media as physical elements. Information for identifying these physical elements (identifying information) is allocated to each of these physical elements. License information, indicating whether access to the contents is to be allowed or not, is recorded on a MO media. Access to the contents recorded on the MO media is controlled based on the license information and the identifying information.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: April 11, 2006
    Assignee: Fujitsu Limited
    Inventors: Jun Kamada, Seigo Kotani, Etsuo Ono, Massayuki Hatanaka, Masatoshi Yoshida, Takahiro Nakai