Frequency slaving apparatus

Details Frequency slaving apparatus Frequency slaving apparatus

1994-09-22

1995-12-05

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

331 25, H03D 324

Patent

active

054736412

ABSTRACT:
A frequency control device comprises, in the form of a phase-locked loop, a phase comparator, a filter, an oscillator producing a local clock signal and two divide-by-M frequency dividers. The dividers receive the local clock signal whose frequency is slaved to N times the frequency of a master clock signal, with M<N, and are looped to the inputs of the comparator. A first of the dividers is reinitialized at the frequency of the master clock signal. A load circuit loads the most-significant-bit stages of a counter included in the first divider with a binary word added to binary elements stored in most-significant-bit stages of a counter included in the second divider, after a resetting of the second divider following a general initialization of the device.

REFERENCES:
patent: 4743857 (1988-05-01), Childers

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