Patents by Inventor Philippe Faugeras

Philippe Faugeras 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: 4656350
    Abstract: An opto-electronic selector having matrix-addressed photodetectors is characterized in that the photodetectors (Ph) are followed by individual amplifiers (PA), each of which is powered at constant voltage by a voltage source under the control of a matrix line selection control (X) and at constant current from a current source proper to said amplifier and capable of being switched on under the control of a matrix column selection (Y), thereby forming a switching cell (C) in conjunction with the associated photodetector. Such a detector may be used in broadcasting programs to subscribers.
    Type: Grant
    Filed: June 13, 1985
    Date of Patent: April 7, 1987
    Assignee: Compagnie Industrielle Des Telecommunications CIT-Alcatel
    Inventors: Philippe Faugeras, Daniel Tribet
  • Patent number: 4653849
    Abstract: An optical space-division switching assembly comprises a distribution assembly consisting of a stack of P distribution plates each with N guides which on the one hand, for each plate, are coupled in common to the end face of an optical element assigned to the plate and belonging to a group of P elements and, on the other hand, for the P plates, communicate with the same side of the stack in N rows of end faces, and an optical selection assembly consisting of a stack of N flat rigid opto-mechanical switches each movable between an optical element assigned to the switch and belonging to another group of N elements and the corresponding row of end faces of the guides of the plates and incorporating P guides having first ends assigned to the individual links between these guides and the corresponding optical element and second ends individually assigned to the P end faces of the guides of the plates of the corresponding row. This assembly provides for the broadcasting of P programs to N subscribers.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: March 31, 1987
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Robert Boirat, Philippe Faugeras, Denis Haux, Jacques Mimeur
  • Patent number: 4653850
    Abstract: The device comprises, for coupling the accesses of N first elements (fa) with the accesses of N second elements (fp) an distributer assembly (10) constituted by a stack of P flat and rigid distribution plates (11) having N waveguides (h) each coupled to the access of one of the second elements (fp) and a concentrator-selector assembly (20) constituted by a stack of N flat and rigid concentration and selection plates (21) having P waveguides and including an integrated strip (31) of P photodiodes which are coupled to the ends of the P waveguides, said assemblies being assembled to each other to couple the individual waveguides together. It is particularly applicable to optically broadcasting P programs to N subscribers.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: March 31, 1987
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Robert Boirat, Philippe Faugeras, Denis Haux, Jacques Mimeur
  • Patent number: 4531205
    Abstract: Optoelectronic method of reading the data retained on a magnetic medium (SM) on a plurality of tracks, receiving the data in the form of a plurality of luminous spots (ID.sub.i) projected onto a plane (P) where there are arranged a plurality of photoelectronic transducers aligned in at least one row (BTRPE.sub.ijl), at least two transducers (TRPE.sub.ij, TRPE.sub.(i+l)j) being associated with the same spot. A specified sampling instants the electrical image of the portion of the observed track is obtained in the form of a plurality of analog pulses (S'TRPE.sub.ij, S'TRPE.sub.(i+l)j) which are shifted in parallel, are then transferred into a register where they are shifted in series until an analog output signal (SSR.sub.1) is obtained, after which they are converted into a logic signal having a frequency equal to the frequency (f.sub.E) for writing the data on the magnetic medium SM.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: July 23, 1985
    Assignee: Cii Honeywell Bull (Societe Anonyme)
    Inventor: Philippe Faugeras