Patents by Inventor Laurence Duquerroy

Laurence Duquerroy 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).

  • Telecommunication system, for example an IP telecommunication system, and equipment units for use in the system
    Patent number: 7991993
    Abstract: The invention relates to a telecommunication system including a plurality of terminals divided into groups such that within each group each terminal can send multidestination messages to the other members of the group. Each terminal of a group is associated with encryption and decryption means so that each terminal can send multidestination messages that can be decrypted only by the other terminals of the group. The system includes a central server for distributing to each encryption and decryption means keys for secure transmission of communications within each group.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: August 2, 2011
    Assignee: Alcatel Lucent
    Inventors: Sébastien Josset, Laurence Duquerroy
  • Data packet header processing device for two-level switching via a logical bus within a satellite communication network
    Publication number: 20050013262
    Abstract: A device (D) is dedicated to processsing data frames for satellite terminals (ST) of a satellite communication network, connected to at least one logical bus (B) defined on a satellite connection. The device (D) comprises processing means (MT) adapted, on receiving packets of a data frame from a first communication equipment (UE11), connected to a first satellite terminal (ST1) coupled to said device (D), and addressed to a second communication equipment (UE2), connected to a second satellite terminal (ST2), to encapsulate each packet received in a level 2 transmisstion protocol header (of the ISO layered model) comprising at least the identifier of the bus to which the second satellite terminal (ST2) is connected and the communication identifier of the first satellite terminal (ST1), before it is transmitted to the satellite (SAT), via the connection.
    Type: Application
    Filed: April 29, 2004
    Publication date: January 20, 2005
    Inventors: Tarif Zein Al-Abedeen, Laurence Duquerroy, Stephane Combes
  • Telecommunication system, for example an IP telecommunication system, and equipment units for use in the system
    Publication number: 20030188159
    Abstract: The invention relates to a telecommunication system including a plurality of terminals divided into groups such that within each group each terminal can send multidestination messages to the other members of the group. Each terminal of a group is associated with encryption and decryption means so that each terminal can send multidestination messages that can be decrypted only by the other terminals of the group. The system includes a central server for distributing to each encryption and decryption means keys for secure transmission of communications within each group.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 2, 2003
    Applicant: ALCATEL
    Inventors: Sebastien Josset, Laurence Duquerroy