Patents by Inventor Alberto Tellan

Alberto Tellan 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).

  • Energizing arrangement for controlling the luminous intensity of at least one discharge lamp and use of such arrangement
    Patent number: 4649322
    Abstract: The arrangement of the invention enables control of a light emitting element comprising at least one discharge tube. Firing of the tube is effected by a generator which provides voltage pulses at predetermined periodic intervals (T.sub.r). The luminous intensity of the tube is controlled by a D.C. source which enables application of a discharge maintenance current to the tube, the duration of application (T.sub.c) of which depends on an instruction signal. A circuit is provided to assure synchronism between the application of the voltage pulse and the maintenance current. The arrangement may be applied in matrix displays.
    Type: Grant
    Filed: January 23, 1985
    Date of Patent: March 10, 1987
    Assignee: Omega Electronics S.A.
    Inventors: Alberto Tellan, Pierre Desarzens, Philippe Deglon