Patents by Inventor Frederic Dublanchet

Frederic Dublanchet 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).

  • Transmitting and processing protected content
    Patent number: 7848521
    Abstract: A method for transmission and storing of scrambled content in which the scrambled content is transmitted together with encrypted control words, the control words being used for descrambling the scrambled content, transmitting to a receiver/decoder the scrambled content and encrypted control words, said control words being encrypted by an exploitation key (KG), decrypting said encrypted control words in a removable security module with an exploitation key (KG), said removable security module being received by the receiver/decoder, characterised in that it further includes transmitting usage rules message (URM) to the receiver/decoder (2000), which usage rules (URM) impose usage constraints on the playback of the content stored on a mass storage device encrypting the decrypted encrypted control words and usage rules messages by a local key (KL) to produce encrypted control management messages (CMM) storing said scrambled content and encrypted control management message on the mass storage device of the receiver
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: December 7, 2010
    Assignee: Thomson Licensing S.A.
    Inventors: David Leporini, Frederic Dublanchet, Andre Surcouf, Nicolas Gaude, Eric Delaunay
  • Method of and apparatus for providing secure communication of digital data between devices
    Patent number: 7840805
    Abstract: A method of secure communication of digital data between devices, including validating, by a security module, the devices using device identifiers, generating a random key in the security module, and transmitting the random key to the devices.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 23, 2010
    Assignee: Nagra Thomson Licensing
    Inventors: Michel A. Maillard, Jean-Luc Dauvois, Frédéric Dublanchet, David Leporini
  • Method of and apparatus for providing secure communication of digital data between devices
    Publication number: 20070113073
    Abstract: A method of secure communication of digital data between devices, including validating, by a security module, the devices using device identifiers, generating a random key in the security module, and transmitting the random key to the devices.
    Type: Application
    Filed: December 8, 2006
    Publication date: May 17, 2007
    Applicant: THOMSON Licensing S.A.
    Inventors: Michel Maillard, Jean-Luc Dauvois, Frederic Dublanchet, David Leporini
  • Transmitting and processing protected content
    Publication number: 20030182579
    Abstract: Disclosed herein is method of transmitting data, comprising transmitting conditional access information and content management information independently.
    Type: Application
    Filed: June 4, 2003
    Publication date: September 25, 2003
    Inventors: David Leporini, Frederic Dublanchet, Andre Surcouf, Nicolas Gaude, Eric Delaunay