Telephone-coupled visual alphanumeric communication device for d

Details Telephone-coupled visual alphanumeric communication device for d Telephone-coupled visual alphanumeric communication device for d

1978-01-06

1980-03-04

Konick, Bernard

179 84L, H04M 1106

Patent

active

041918541

ABSTRACT:
A portable self-powered electrically conductively isolated device converts alphanumeric electric signals transmitted from a Touch-Tone telephone at a sending station to visual signals at a receiving telephone station. A magnetic pickup is attached to the activated receiving telephone, as by a suction cup, and feeds two-frequency Touch-Tone signals to tuned detectors which energize two overlapped parallel-busbar grids interconnected at their crossover points by panel-displayed light-emitting diodes. By code the touch-sent signals are converted to visually received signals; for example, on pushbutton 5 one touch means "J", two touches "K" and three touches"L".

REFERENCES:
patent: 3582554 (1971-06-01), Le Blang
patent: 3585303 (1971-06-01), Chieffo
patent: 4012599 (1977-03-01), Meyer

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