Time base for synchronous generation of frame and clock pulses

Details Time base for synchronous generation of frame and clock pulses Time base for synchronous generation of frame and clock pulses

1978-05-05

1979-08-14

Griffin, Robert L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307219, 331 2, 331 47, 331 55, 178 691, H04J 306

Patent

active

041646290

ABSTRACT:
The invention relates to high-security time bases. A time base comprises three synchronized generators which each deliver a clock signal 2h or a synchronizing signal Sy used for synchronizing frames. Each generator includes an oscillator driven by a phase comparator which receives the three clock signals and by an internal locking circuit which receives a signal connected to the external synchronizing signal and/or a signal connected to the synchronizing signal Sy inherent to the generator, the synchronizing signal Sy being synchronized by a majority circuit which receives the synchronizing signals Sy from the three generators. Application to data processing installations and in particular to telephone exchanges.

REFERENCES:
patent: 3522455 (1970-08-01), Thomas et al.
patent: 3686657 (1972-08-01), Renoulin
patent: 4096396 (1978-07-01), Belforte et al.

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