Patents by Inventor Plato Zorzy

Plato Zorzy 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).

  • Pulse code modulation responsive alarm system
    Patent number: 4260982
    Abstract: A system for producing an alarm whenever the distance between a transmitter and a receiver exceeds a predetermined distance. The transmitter includes circuitry for generating a signal having a preselected pulse code modulation pattern. The receiver includes circuitry for responding to the particular pulse code pattern and for sounding an alarm when the signal from the transmitter is so weak that pattern is not received.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: April 7, 1981
    Inventors: Angelo P. DeBenedictis, Plato Zorzy
  • Interfacing unit for telephone networks
    Patent number: 4001515
    Abstract: A telephone interfacing circuit. A digital bandpass filter transmits a continuous pulse stream in response to a ringing signal which has a frequency in the normal range of voice signals. A high frequency reference pulse source clocks a first counter to determine a final interval. Then a second counter establishes a second interval corresponding to the bandwidth. During this interval, a gate can pass incoming signals in the pass band. Another circuit discriminates a continuous pulse stream to actuate a ringing signal oscillator for transmitting a ringing signal at another frequency.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: January 4, 1977
    Assignee: Astreon Corporation
    Inventor: Plato Zorzy