Patents by Inventor Brian James Donovan-Smith

Brian James Donovan-Smith 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).

  • Encrypted media key management
    Patent number: 7076067
    Abstract: A key or licence management system for the secure online distribution of digitized audio-visual works (“media”) using encryption techniques. Encrypted media is stored on a media server while the encryption keys are stored on a media key server. Users acquire rights from online retailers to obtain from the media key server keys corresponding to the media they wish to play. The key server encrypts keys before releasing them, preferably with the user's public key using a public key encryption algorithm. Keys are stored in volatile memory at the user's client device and thus the user is in receipt of the key just in time to play the media.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: July 11, 2006
    Assignee: RPK New Zealand Limited
    Inventors: William Michael Raike, Brian James Donovan-Smith, Sean Joseph Higgins, Patrick John Martin
  • Encrypted media key management
    Publication number: 20020162104
    Abstract: A key or licence management system for the secure online distribution of digitized audio-visual works (“media”) using encryption techniques. Encrypted media is stored on a media server while the encryption keys are stored on a media key server. Users acquire rights from online retailers to obtain from the media key server keys corresponding to the media they wish to play. The key server encrypts keys before releasing them, preferably with the user's public key using a public key encryption algorithm. Keys are stored in volatile memory at the user's client device and thus the user is in receipt of the key just in time to play the media.
    Type: Application
    Filed: July 10, 2001
    Publication date: October 31, 2002
    Inventors: William Michael Raike, Brian James Donovan-Smith, Sean Joseph Higgins, Patrick John Martin