Patents Examined by Venkatanarayanan Perungavoor
  • Shielding in wireless networks
    Patent number: 8122243
    Abstract: Exemplary embodiments of methods and apparatuses to provide shielding from key cracking in wireless networks are described. In one embodiment, a first frame having a first content is identified. Determination is made whether the first frame needs to be shielded. A second frame having at least a portion of the first content is transmitted in response to determining that the first frame needs to be shielded. The first frame has data encrypted with a first encryption and the second frame has data encrypted with a second encryption.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: February 21, 2012
    Assignee: Airmagnet, Inc.
    Inventors: Ricardo T. Farrington, Terrin Eager, Dong Nguyen
  • Content authentication and recovery using digital watermarks
    Patent number: 8032758
    Abstract: The disclosure describes methods for using digital watermarking to authenticate digital media signals, such as images, audio and video signals. It also describes techniques for using embedded watermarks to repair altered parts of a media signal when alteration is detected. Alteration is detected using hashes, digital watermarks, and a combination of hashes and digital watermarks.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: October 4, 2011
    Assignee: Digimarc Corporation
    Inventor: Jun Tian
  • Data security system
    Patent number: 7797750
    Abstract: A data security system controls access to and interfaces with a computer system by requiring user verification through fingerprint sensing. The data security system includes a security module having a fingerprint sensor, image data, and an application interface that is generated by the security module and communicative with the computer system. The image data is associated with a fingerprint of a user through the use of the security module.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: September 14, 2010
    Assignee: Newport Scientific Research LLC
    Inventors: Joshua Ho, Gyu Nam Choi