Patents by Inventor Ryota Koiso

Ryota Koiso 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).

  • Electronic authentication method, electronic authentication apparatus and electronic authentication storage medium
    Patent number: 6954854
    Abstract: According to the invention, techniques for verifying that data input as a response to presented contents is true input data for a content access. In a representative embodiment according to the present invention, there is provided an electronic authentication method that comprises a variety of steps, such as a step of generating an identifier for contents in a first information processing apparatus and storing the identifier in a storage unit. Transmitting the contents and the identifier to a second information processing apparatus can also be part of the method. Steps of inputting data for the contents in the second information processing apparatus and transmitting the input data and the identifier from the second information apparatus to the first information apparatus can also be included in the method.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: October 11, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Miura, Yukio Saito, Ryota Koiso