Accession Number : ADD008682

Title :   A Controller for a Locked Carrier Distributed Multiplexed Telemetry System.

Descriptive Note : Patent Application,


Personal Author(s) : Gholson,Norman H

Report Date : 15 Jul 1981

Pagination or Media Count : 9

Abstract : THE PRESENT INVENTION PROVIDES A CONTROLLER FOR A LOCKED CARRIER DISTRIBUTED MULTIPLEXED TELEMETRY SYSTEM WHICH USES ON-OFF SWITCHING OF A D.C. POWER SUPPLY AND A PILOT SIGNAL GENERATOR AT A REMOTE CONTROL UNIT. A pilot signal from the remote control unit is amplified and rectified. The d.c. rectifier output, occurring only during the presence of the pilot signal, is sensed by a comparator which provides rapid transition pulses to advance a counter. The counter is advanced one count for each pilot signal cycle (on-off-on) and is reset for each d.c. power supply cycle (on-off-on). The devices to be controlled are connected to the output of the counter. Therefore, it is an object of the present invention to provide a controller for a locked carrier distributed multiplexed telemetry system which is insensitive to noise. Another object of the present invention is to provide a controller which does not require additional conductors between the controller and a remote control unit.

Descriptors :   *Patent applications, *Telemeter systems, *Multiplexing, *Remote control, Electromagnetic pulses, Signal to noise ratio, Comparators, Noise(Electrical and Electromagnetic), Direct current, Power supplies, Control systems, Rectifiers, Schematic diagrams

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE