Patents by Inventor Samuel J. Wenker

Samuel J. Wenker 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).

  • Media decoding control with hardware-protected digital rights management
    Patent number: 9430619
    Abstract: Innovations in the area of hardware-protected digital rights management (“DRM”) systems are presented. For example, a hardware-protected DRM system includes a trusted layer and untrusted layer. In the untrusted layer, a control module receives source media data that includes encrypted media data. The control module processes metadata about the media data. The metadata, possibly exposed by a module in the trusted layer, is not opaque within the untrusted layer. In the trusted layer, using key data, a module decrypts encrypted media data, which can be the encrypted media data from the source media data or a transcripted version thereof. A module in the trusted layer decodes the decrypted media data. A host decoder in the untrusted layer uses the metadata to manage at least some aspects of the decoding, rendering and display in the trusted layer, without exposure of decrypted media data or key data within the untrusted layer.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: August 30, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Yongjun Wu, Shyam Sadhwani, Samuel J. Wenker, Brian P. Evans, Hany Farag, Lucia Darsa
  • MEDIA DECODING CONTROL WITH HARDWARE-PROTECTED DIGITAL RIGHTS MANAGEMENT
    Publication number: 20160070887
    Abstract: Innovations in the area of hardware-protected digital rights management (“DRM”) systems are presented. For example, a hardware-protected DRM system includes a trusted layer and untrusted layer. In the untrusted layer, a control module receives source media data that includes encrypted media data. The control module processes metadata about the media data. The metadata, possibly exposed by a module in the trusted layer, is not opaque within the untrusted layer. In the trusted layer, using key data, a module decrypts encrypted media data, which can be the encrypted media data from the source media data or a transcrypted version thereof. A module in the trusted layer decodes the decrypted media data. A host decoder in the untrusted layer uses the metadata to manage at least some aspects of the decoding, rendering and display in the trusted layer, without exposure of decrypted media data or key data within the untrusted layer.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 10, 2016
    Applicant: MICROSOFT CORPORATION
    Inventors: Yongjun Wu, Shyam Sadhwani, Samuel J. Wenker, Brian P. Evans, Hany Farag, Lucia Darsa