Patents Assigned to Vocaltec Communication, Ltd.
  • Multiple frequency signal detector
    Patent number: 6519541
    Abstract: A method for characterizing a dual frequency (DF) signal including the steps of sampling the signal at a sampling frequency vs so as to obtain a sequence of signal samples, and obtaining an &agr;-constant and a &bgr;-constant of the DF signal meeting a predetermined criterion.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: February 11, 2003
    Assignee: Vocaltec Communication, Ltd.
    Inventor: Charly Bitton