Patents by Inventor Robert Julien

Robert Julien 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).

  • Protection device for the horizontal scanning control of a display screen
    Patent number: 4484112
    Abstract: The invention relates to a display screen horizontal scanning control protection device. The device comprises a switch making it possible to open or close the supply circuit of the scanning control circuit, said switch being activated with the aid of a signal supplied by an AND gate, whose state is a function of the level of the supply voltage of the central unit, which itself generates the horizontal scanning sync signal activating the scanning control circuit.Application to telematic terminals equipped with a cathode-ray tube screen.
    Type: Grant
    Filed: March 22, 1983
    Date of Patent: November 20, 1984
    Assignee: Thomson CSF Telephone
    Inventors: Michel Facon, Robert Julien