Patents by Inventor Jean P. Trahand

Jean P. Trahand 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: 4380028
    Abstract: A television camera equipped with a device making it possible to automatically eliminate the blooming effect produced by a saturating bright spot.The device includes a closed loop formed by a circuit for the comparison of the video signal with a predetermined threshold close to the saturating level and whose output supplies a generator for deflection signals corresponding to the localization at X and Y of the bright spot on the image and a generator for producing a unblanking signal for the tube during the line flyback and with a frequency variable as a function of the brightness of the bright spot, and circuits for mixing the deflection and unblanking signals respectively with TV scan deflection signals and with the beam blanking signal in such a way that there is a local modification of the tube sensitivity at the location of the bright spot by reducing the charge integration time.
    Type: Grant
    Filed: February 10, 1981
    Date of Patent: April 12, 1983
    Assignee: Thomson-CSF
    Inventors: Christian Pepin, Jean P. Trahand