Synchronizing stage for the acquisition of a synchronizing signa

Details Synchronizing stage for the acquisition of a synchronizing signa Synchronizing stage for the acquisition of a synchronizing signa

1985-11-06

1987-10-13

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 76, 375113, H04L 2560

Patent

active

047003570

ABSTRACT:
A synchronizing stage is provided in a regenerative repeater at the receiving side of a transmission circuit for acquiring a synchronizing signal from a biternary data sequence for synchronizing a clock generator in the regenerative repeater. First, second and third threshold switches respectively assigned first, second and third threshold values are provided, whereby a response of all three threshold switches occurs only given long signal edges of the biternary data sequence per signal edge. In addition, first, second and third delay units are assigned to the threshold switches and a logic circuit is provided, outputting the synchronizing signal given a response of all three threshold switches per signal edge, whereby the time for the starting edge of the synchronizing signal is referred to as the time at which a response of the second threshold switch occurs, the second threshold switch having a threshold value corresponding to the zero line of the biternary data sequence.

REFERENCES:
patent: 4339823 (1982-09-01), Predina et al.
patent: 4563593 (1986-01-01), Isobe et al.

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