Arrangement for transmitting digital data and synchronizing info

Details Arrangement for transmitting digital data and synchronizing info Arrangement for transmitting digital data and synchronizing info

1976-06-07

1977-10-18

Brown, Thomas W.

Telegraphy

Systems

Printing

178 691, H04J 306

Patent

active

040547540

ABSTRACT:
A high capacity time-division switching system is disclosed which includes a digital data transmission system for transmitting both digital data words and synchronizing information. The predetermined bit positions of each data word, which bit positions are to convey data only, are encoded and transmitted as a combination of the true and complement representation of those digits. The remaining bit positions, which are used to convey both data and synchronizing information, are encoded and transmitted as true representations only. A digital data receiver responds to the data so encoded by extracting synchronizing information based on the violation of the predominately true and complement coding format.

REFERENCES:
patent: 3701894 (1972-10-01), Low et al.
patent: 3742199 (1973-06-01), Lubarsky
patent: 3783383 (1974-01-01), Forster et al.

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