Patents by Inventor Michel P. Bertrand

Michel P. Bertrand 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).

  • Message transmission system
    Patent number: 5142399
    Abstract: A message transmission system is operative for transmitting, over a short range, information emitted by at least one transmitter to one or more receivers, the transmitter being situated in a semi-hemispherical field above the receivers. Each receiver has optics for focusing the semi-hemispherical field on multiple detector elements of an array placed in the focal plane of the optics. The elements are responsive to the transmitted signal.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: August 25, 1992
    Assignee: Societe Anonyme de Telecommunications
    Inventors: Michel P. Bertrand, Michel B. J. Bucher, Yves R. Castanet
  • System for determining the position of at least one target by triangulation
    Patent number: 5008543
    Abstract: A system is disclosed for determining the position of at least one target by triangulation, comprising two passive sighting devices which measure the intensity of radiation received along a sighting line which scans a vertical sighting plane. They are disposed at a distance from each other along the same vertical axis and are driven in rotation about this common axis so that their sighting planes merge. A circuit extracts the angular coordinates of the target, relative to each of the sighting devices, and computes the distance of the target by triangulation in the vertical sighting plane.
    Type: Grant
    Filed: January 17, 1990
    Date of Patent: April 16, 1991
    Assignee: Sat(Societe Anonyme de Telecommunications
    Inventors: Michel P. Bertrand, Michel B. Bucher, Andre R. Delclaux