ANGELO P DEBENEDICTIS
Broker in Carlisle, MA
License number
Massachusetts 35303
Issued Date
Jun 1, 1963
Expiration Date
Aug 28, 2016
Type
Broker
Address
Address
Carlisle, MA 01741
Professional information
Pulse Code Modulation Responsive Alarm System
US Patent:
4260982, Apr 7, 1981
Filed:
Oct 25, 1979
Appl. No.:
6/088034
Inventors:
Angelo P. DeBenedictis - Carlisle MA
Plato Zorzy - Salem MA
Plato Zorzy - Salem MA
International Classification:
G08B 310
US Classification:
340539
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.