Patents Assigned to Andre Alain Tabourian
  • Digital transmission system
    Patent number: 5796783
    Abstract: A waveform generating system generates one or more quadrature amplitude modulated (QAM) spectrum pairs which are combined with a frequency modulated (FM) spectrum in the center. The QAM spectrums are offset in frequency to result in a gap in the center to allow combining of the FM spectrum without interference.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: August 18, 1998
    Assignee: Andre Alain Tabourian
    Inventor: James A. Crawford