Counter type remote control receiver including noise immunity sy

Details Counter type remote control receiver including noise immunity sy Counter type remote control receiver including noise immunity sy

1975-08-25

1976-09-14

Griffin, Robert L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

325392, 340171A, 178DIG15, H04B 106

Patent

active

039809560

ABSTRACT:
A remote control receiver for processing signals representative of a plurality of commands, each command being identified by a control signal lying in a respective band of frequencies. The command-representative control signals are supplied to a counter which is also supplied with regularly recurring timing or clock signals. The clock signals provide recurring counting intervals of fixed duration during which the frequency of an incoming signal is measured and divided. The counter provides an output count, the magnitude of which is representative of a particular command. The divided output signals are compared during successive time intervals for identifying continued reception of like signals. Apparatus which is to be controlled by the received command signals is supplied with the divided output signals only after a predetermined number of successive like output signals are sensed. When successive output signals deviate from each other in a particular manner, they are decoupled from the control apparatus to prevent erroneous responses.

REFERENCES:
patent: 3621487 (1971-11-01), Christensen
patent: 3678392 (1972-07-01), Houghton
patent: 3919690 (1975-11-01), Field

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