Patents by Inventor Keiichiro Tokunaga

Keiichiro Tokunaga 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 data processing system, electronic device apparatus, and server device
    Patent number: 7215799
    Abstract: An electronic device apparatus includes: a generating unit for acquiring an authentication image containing an image of a fingerprint of an owner of the electronic device apparatus and/or an image of a possession of the owner, and for generating first authentication image data based on the given acquired authentication image; a write unit for writing the first authentication image data, to a recording medium which the owner has purchased; a read unit for reading given authentication image data from a recording medium to which the given authentication image data and given content data are written; a determination unit for comparing the given authentication image data with the first authentication image data, and for determining whether or not they match with each other; and a processing unit for processing the given content data based on a determination result by the determination unit.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: May 8, 2007
    Assignee: NTT Electronics Corporation
    Inventor: Keiichiro Tokunaga
  • Content data processing system, electronic device apparatus, and server device
    Publication number: 20030179914
    Abstract: An electronic device apparatus includes: a generating unit for acquiring an authentication image containing an image of a fingerprint of an owner of the electronic device apparatus and/or an image of a possession of the owner, and for generating first authentication image data based on the given acquired authentication image; a write unit for writing the first authentication image data, to a recording medium which the owner has purchased; a read unit for reading given authentication image data from a recording medium to which the given authentication image data and given content data are written; a determination unit for comparing the given authentication image data with the first authentication image data, and for determining whether or not they match with each other; and a processing unit for processing the given content data based on a determination result by the determination unit.
    Type: Application
    Filed: March 19, 2003
    Publication date: September 25, 2003
    Inventor: Keiichiro Tokunaga