Patents by Inventor Yuuki Hachiya

Yuuki Hachiya 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).

  • Content distribution program, content distribution method, server, content utilization apparatus, and content utilization system
    Patent number: 8595139
    Abstract: An encrypted content and a license are separated from each other to be distributed individually, so that the encrypted content is decrypted using the license in a user apparatus. A server encrypts licenses of a plurality of encrypted contents for package sale to generate an inactive license packaged in one file and distribute the inactive license to a user terminal utilizing an activation license for package sale. An activation license for package sale is distributed in response to a purchase request from the user terminal, a plurality of encrypted licenses contained in the inactive license are decrypted, an encrypted content contained in an object for package sale is decrypted using a license corresponding thereto so that the decrypted content is reproduced.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: November 26, 2013
    Assignee: Fujitsu Limited
    Inventors: Hidefumi Maruyama, Tetsuhiro Chiba, Yuuki Hachiya
  • Content distribution program, content distribution method, server, content utilization apparatus, and content utilization system
    Publication number: 20070239619
    Abstract: An encrypted content and a license are separated from each other to be distributed individually, so that the encrypted content is decrypted using the license in a user apparatus. A server encrypts licenses of a plurality of encrypted contents for package sale to generate an inactive license packaged in one file and distribute the inactive license to a user terminal utilizing an activation license for package sale. An activation license for package sale is distributed in response to a purchase request from the user terminal, a plurality of encrypted licenses contained in the inactive license are decrypted, an encrypted content contained in an object for package sale is decrypted using a license corresponding thereto so that the decrypted content is reproduced.
    Type: Application
    Filed: March 22, 2007
    Publication date: October 11, 2007
    Inventors: Hidefumi Maruyama, Tetsuhiro Chiba, Yuuki Hachiya