Patents by Inventor James B. Shobe

James B. Shobe 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).

  • Obtaining a signed rights label (SRL) for digital content and obtaining a digital license corresponding to the content based on the SRL in a digital rights management system
    Patent number: 7353402
    Abstract: Content is encrypted according to a content key (CK) ((CK(content))), (CK) is protected according to a license server public key (PU-DRM), and rights data associated with the content is protected according to (PU-DRM). The protected items are submitted as a rights label to the license server for signing. The license server validates the rights label and, if valid, digitally signs based on the protected rights data to result in a signed rights label (SRL), and returns same. The SRL is concatenated with (CK(content)) and both are distributed to a user. To render the content, the user submits the SRL to the license server to request a license. The license server verifies the SRL signature and reviews the SRL protected rights data to determine whether the user is entitled to the license, and if so issues the license, including (CK) in a protected form accessible to the user.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: April 1, 2008
    Assignee: Microsoft Corporation
    Inventors: Steven Bourne, Prashant Malik, Vinay Krishnaswamy, James B. Shobe, Jr., Chandramouli Venkatesh, Attila Narin
  • Obtaining a signed rights label (SRL) for digital content and obtaining a digital license corresponding to the content based on the SRL in a digital rights management system
    Publication number: 20040003270
    Abstract: Content is encrypted according to a content key (CK) ((CK(content))), (CK) is protected according to a license server public key (PU-DRM), and rights data associated with the content is protected according to (PU-DRM). The protected items are submitted as a rights label to the license server for signing. The license server validates the rights label and, if valid, digitally signs based on the protected rights data to result in a signed rights label (SRL), and returns same. The SRL is concatenated with (CK(content)) and both are distributed to a user. To render the content, the user submits the SRL to the license server to request a license. The license server verifies the SRL signature and reviews the SRL protected rights data to determine whether the user is entitled to the license, and if so issues the license, including (CK) in a protected form accessible to the user.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Applicant: Microsoft Corporation
    Inventors: Steven Bourne, Prashant Malik, Vinay Krishnaswamy, James B. Shobe, Chandramouli Venkatesh, Attila Narin