Synchronization signal generating device

Details Synchronization signal generating device Synchronization signal generating device

1995-11-17

1997-03-11

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

375375, 375376, 327 7, 327156, 327159, 331 25, H04L 700, H04L 2536

Patent

active

056109520

ABSTRACT:
A synchronization signal generation device includes a circuit that enables a phase difference between a synchronization signal and an input signal with intermittent edges to be arbitrarily and continuously varied. The synchronization signal generating device is of the second order phase locked loop and has a phase detector with the following elements: a circuit for generating pulses with widths corresponding to the phase difference between the input signal and the synchronization signal only upon occurrence of an edge of the input signal; a circuit for generating pulses with a constant width only upon occurrence of an edge of the input signal or the synchronization signal; a variation circuits which varies one or both of the amplitudes of the aforesaid pulses; and a combining circuit which adds or subtracts the pulses from the variation circuits to derive a phase comparison signal.

REFERENCES:
Motorola Mecl Data--DL122/D Rev 5--1993--(pp. 103-106)--Motorola Inc.--Motorola Mecl Integrated Circuits'.

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