Circuit arrangement for synchronizing the letters/figures levels

Details Circuit arrangement for synchronizing the letters/figures levels Circuit arrangement for synchronizing the letters/figures levels

1975-03-06

1976-07-06

Robinson, Thomas A.

Telegraphy

Systems

178 26R, 178 79, H04L 1702

Patent

active

039683249

ABSTRACT:
An arrangement for synchronizing one or more input/output devices in teleprinters in the context of a subdivision, necessitated by the use of a five-bit code (CCITT 2) for communications transmission purposes, of the total quantity of characters into letters/figures levels employs a storage device in which the level relationship (letters and figure levels) of the character last transmitted or received is stored. A comparator connected to the storage device compares the level relationship of the stored character with that of a character ready for transmission and in the event of disparity operates, via a logic arrangement, to effect the introduction of a level-related switching symbol.

REFERENCES:
patent: 3459890 (1969-08-01), Augustin et al.
patent: 3555186 (1971-01-01), Soleure
patent: 3617628 (1971-11-01), Holstein et al.

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