Patents by Inventor Michel Ronald Breugom

Michel Ronald Breugom 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).

  • Receiving device for securely storing a content item, and playback device
    Patent number: 7124304
    Abstract: A receiving device for securely storing a content item on a storage medium is disclosed. The content item is stored in a secure format, and has an associated license file. The license file is encrypted using public key associated with a group of playback devices, so that each playback device in the group can decrypt the license file and play the content item, but devices outside the group cannot. A playback device can provide a device-specific public key to a Content Distribution Management System (CDMS). The CDMS then returns the secret key for the group encrypted with the public key of the playback device. The playback device then securely obtains the secret key of the group and is subsequently able to decrypt the license file.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: October 17, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Hendrik Jan Bel, Gerardus Cornelis Petrus Lokhoff, Michel Ronald Breugom, Dirk Valentinus Rene Engelen, Peter Van De Poel
  • Receiving device for securely storing a content item, and playback device
    Publication number: 20020174354
    Abstract: A receiving device (110) for securely storing a content item (102) on a storage medium (111). The content item (102) is stored in a secure format, and has an associated license file. The license file (141) is encrypted using public key associated with a group of playback devices (120, 121), so that each playback device (121) in the group can decrypt the license file (141) and play the content item (102), but devices outside the group cannot. A playback device (121) can provide a device-specific public key to a Content Distribution Management System (CDMS). The CDMS then returns the secret key for the group encrypted with the public key of the playback device (121). The playback device (121) then securely obtains the secret key of the group and is subsequently able to decrypt the license file (141).
    Type: Application
    Filed: March 8, 2002
    Publication date: November 21, 2002
    Inventors: Hendrik Jan Bel, Gerardus Cornelis Petrus Lokhoff, Michel Ronald Breugom, Dirk Valentinus Rene Engelen, Peter Van De Poel