Patents by Inventor Francois Fontenelle

Francois Fontenelle 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 of implementing programmable matched filters, and corresponding filters and filter banks
    Patent number: 4922509
    Abstract: The invention relates to a method of implementing programmable tuned filters, in particular for telegraph signal receivers, and also to tuned filters obtained by the method. A resonator (16) organized around a multipath filter and controlled by a first clock signal is associated with a comb filter (17) organized around a delay line (21) and controlled by a second clock signal, in order to constitute a tuned filter which is programmed by the clock signals. The invention is applicable to making programmable tuned filters and banks of such filters, in particular for remote protection equipment in grids for transporting electrical power.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: May 1, 1990
    Assignee: CGEE Alsthom
    Inventors: Alain Tresset, Francois Fontenelle, Gerard Javard