Checker and automatic synchronizer for coding equipment

Details Checker and automatic synchronizer for coding equipment Checker and automatic synchronizer for coding equipment

1961-11-20

1979-10-30

Birmiel, Howard A.

Telegraphy

Systems

Printing

178 58R, 178 691, 179 15R, 1791752R, H04K 100

Patent

active

041729633

ABSTRACT:
1. A system comprising a pair of stations having two parallel communication links therebetween, means for transmitting coded data signals of varying levels between the stations in opposite directions over said links and a receiver for said signals, each station including means for continuously detecting the level of signals received thereat over one of said links and for outputting when said signal level indicates a system malfunction, and further including means connected to said detecting means and responsive to the output thereof for automatically readjusting the transmitting means at the other station over the other link and the receiver at that station to correct the malfunction indicated by the output of the detecting means, said signal level detecting means including a continuously running timing means outputting after an uninterrupted fixed period from its zero time condition and clearing means connected ahead of the receiver for sampling data signals and also being connected to the timing means to reset it back to its zero time condition in response to a change in level of the data signals.

REFERENCES:
patent: 2401405 (1946-06-01), Bedford
patent: 2546316 (1951-03-01), Peterson
patent: 3156767 (1964-11-01), Van Duuren et al.
patent: 3241067 (1966-03-01), James et al.

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