Patents Assigned to B-Warned, Inc.
  • Alarm-responsive apparatus and method
    Patent number: 4935952
    Abstract: A method and apparatus for detecting a fire-alarm acoustic signal includes an energy discriminator to segregate the desired acoustic tone from background noise. Digital circuitry responds to the active output of the energy discriminaton to dial into a telephone network and execute verification operations before repeating the cycle while the acoustic tone of the fire alarm continues to be detected.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: June 19, 1990
    Assignee: B-Warned, Inc.
    Inventor: Jonathan A. Dutra