Patents by Inventor Serugudi Venkata Raghavan

Serugudi Venkata Raghavan 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).

  • Methods and devices for pattern-based user authentication
    Patent number: 8191126
    Abstract: Methods, devices, and systems are presented that facilitate pattern-based user authentication. In a first embodiment, a user may request registration from an authentication server. The authentication server may provide at least one image to the user, wherein the image may comprise a matrix of cells. The user may choose a sequence of cells in the matrix as his or her secret, and may provide a userid and this secret to the authentication server. The authentication server may then validate and store the userid and/or secret. After this registration step, the user may request authentication from the authentication server. The authentication server may provide another image of a matrix of cells to the user. The user may then enter a sequence of symbols associated the sequence of cells that comprise his or her secret. The authentication server may compare the entered sequence of cells to the sequence of cells represented by the stored secret. If the two sequences match, then the user may be authenticated.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: May 29, 2012
    Assignee: Indian Institute of Technology Madras
    Inventor: Serugudi Venkata Raghavan
  • Methods and Devices for Pattern-Based User Authentication
    Publication number: 20100281526
    Abstract: Methods, devices, and systems are presented that facilitate pattern-based user authentication. In a first embodiment, a user may request registration from an authentication server. The authentication server may provide at least one image to the user, wherein the image may comprise a matrix of cells. The user may choose a sequence of cells in the matrix as his or her secret, and may provide a userid and this secret to the authentication server. The authentication server may then validate and store the userid and/or secret. After this registration step, the user may request authentication from the authentication server. The authentication server may provide another image of a matrix of cells to the user. The user may then enter a sequence of symbols associated the sequence of cells that comprise his or her secret. The authentication server may compare the entered sequence of cells to the sequence of cells represented by the stored secret. If the two sequences match, then the user may be authenticated.
    Type: Application
    Filed: May 4, 2009
    Publication date: November 4, 2010
    Inventor: Serugudi Venkata Raghavan