Information transmission equipment

Details Information transmission equipment Information transmission equipment

1975-03-24

1976-11-09

Yusko, Donald J.

Communications: electrical

Digital comparator systems

340 38L, 340 47, 340171PF, G08G 100, B61L 300, H04Q 900, H04Q 912

Patent

active

039914038

ABSTRACT:
A device for transmitting a coded information about an actual signal condition of a signalling system, in which a plurality of conductor pairs are energized from assigned a.c. power sources upon actuation of corresponding signal devices, separation transformers each having a plurality of secondary windings are connected to respective conductor pairs and signals from the secondary windings are rectified and fed to assigned inputs of a code unit.

REFERENCES:
patent: 3573807 (1971-04-01), Osborne
patent: 3587048 (1971-06-01), Brown, Jr.
patent: 3740745 (1973-06-01), Chao
patent: 3863206 (1975-01-01), Rabie
patent: 3867573 (1975-02-01), Birkin
patent: 3885228 (1975-05-01), Katz

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