Patents by Inventor Didier Helou

Didier Helou 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).

  • Method and a device for transforming an operating system to protect a computer program against attack
    Publication number: 20050182930
    Abstract: A device (D) is dedicated to transforming an operating system (OS), where applicable within an equipment (PC). The device (D) comprises processing means (MT) for scrambling one or more program support tool(s) (Fst, Fct) of the operating system (OS) by inserting one or more scrambling parameters into its definition.
    Type: Application
    Filed: February 17, 2005
    Publication date: August 18, 2005
    Inventor: Didier Helou
  • Interconnection system for interconnecting connection units and a central switching facility
    Patent number: 5012465
    Abstract: A central switching facility is constituted by two switching networks connected to each of the connection units via two connection circuits. A connection circuit selects on a timeslot-by-timeslot basis which output network link is to be used for conveying each time slot to the connection unit. On an instruction from the switching network, a connection circuit operates, in a message mode, on one of the time slots selected from those which it processes, and it sends monitoring information to the switching network via control bits in that time slot. An instruction bit, selecting a message mode or a normal mode, is included in each frame transmitted from the switching network to a connection circuit.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: April 30, 1991
    Assignee: Alcatel Cit
    Inventors: Didier Helou, Jean-Yves Peron, Rene Coutin, Georges Thiebaut