Patents by Inventor Bernhard G. Kotzenberg

Bernhard G. Kotzenberg 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).

  • Encrypting content in a tuner device and analyzing content protection policy
    Patent number: 8139768
    Abstract: A tuning device uses a counter mode encryption cipher to encrypt counters associated with media content in order to protect the media content when it is sent to requesting device or controller. The encrypted counters are decrypted in order to consume the media content. The controller may send particular direction to the tuning device as to how the media content, encrypted counters, and other associated data are sent to the controller.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: March 20, 2012
    Assignee: Microsoft Corporation
    Inventors: Thaddeus C. Pritchett, Kenneth Reneris, Bernhard G. Kotzenberg, David J. Cheng