Patents by Inventor Bernard Sergent

Bernard Sergent 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).

  • Patent number: 6384622
    Abstract: Device for cancelling the effects of the reflection in a signal transmission system (10) including a driver (12) and a plurality of n receivers (14, 16) wherein signals are sent according to a multipoint topology from the driver to the receivers, each receiver having an internal capacitance and sending back reflection signals to the driver each time a signal is transmitted thereto by the driver. The device comprises circuit means causing the signal resulting from the sequential reflections due to a given receiver and then due to the driver to have the same magnitude but the reverse sign as the sum of all signals received in the given receiver resulting from the reflections due to all receivers, and the net linking the driver to each receiver comprises delay means (40) enabling the propagating time of a signal sent from the driver to this receiver to be identical for each receiver, whereby the total sum of all reflection signals arriving in the given receiver at the same time is equal to zero.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: May 7, 2002
    Assignee: International Business Machines Corporation
    Inventors: Michel Verhaeghe, Christian Ouazana, Patrick Michel, Bernard Sergent
  • Publication number: 20010024146
    Abstract: ? Device for cancelling the effects of the reflection in a signal transmission system (10) including a driver (12) and a plurality of n receivers (14, 16) wherein signals are sent according to a multipoint topology from the driver to the receivers, each receiver having an internal capacitance and sending back reflection signals to the driver each time a signal is transmitted thereto by the driver. The device comprises circuit means causing the signal resulting from the sequential reflections due to a given receiver and then due to the driver to have the same magnitude but the reverse sign as the sum of all signals received in the given receiver resulting from the reflections due to all receivers, and the net linking the driver to each receiver comprises delay means (40) enabling the propagating time of a signal sent from the driver to this receiver to be identical for each receiver, whereby the total sum of all reflection signals arriving in the given receiver at the same time is equal to zero.
    Type: Application
    Filed: February 28, 2001
    Publication date: September 27, 2001
    Inventors: Michel Verhaeghe, Christian Ouazana, Patrick Michel, Bernard Sergent