Method of and circuitry for detecting synchronism failure of two

Details Method of and circuitry for detecting synchronism failure of two Method of and circuitry for detecting synchronism failure of two

1993-11-08

1995-07-04

Nguyen, Hoa

Excavating

371 42, 371 46, 371 54, 375357, G06F 1100

Patent

active

054307465

ABSTRACT:
A method of and a circuit arrangement for detecting synchronization of two word sequences between a measurement signal and a reference signal. The signals are applied to an exclusive OR-gate comparator whose output produces an error signal which is compared with an error signal shifted by one period. This comparison is effected by an exclusive OR-gate and in the case of coincidence, indicating that the measurement and reference signals are phase-shifted, a new synchronization is enabled. The output of the exclusive OR-gate is an error signal which is time-shifted in a shift register and multiplexer so that the time shifted bit sequence is compared with the bit sequence of the first error signal in a second exclusive OR-gate which is connected to an AND-gate for detecting coincidence and generating a further synchronization signal which is processed through counters, another AND-gate and a flip-flop to produce the synchronization signal which is applied to the reference pattern generated.

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