Clock synchronization circuit

Details Clock synchronization circuit Clock synchronization circuit

1980-10-06

1983-01-18

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

307200A, 328 72, 375 20, 375120, H04L 700

Patent

active

043695159

ABSTRACT:
A circuit which monitors the frequency of an incoming signal and synchronizes an internally generated clock signal to the incoming signal. A retriggerable monostable multivibrator monitors the incoming signal which is synchronized by means of a phase lock loop circuit to a signal generated by a voltage controlled multivibrator. A crystal oscillator provides clock signals upon detection of failure of the incoming clock signal.

REFERENCES:
patent: 3795872 (1974-03-01), Napolitano et al.
patent: 4271526 (1981-06-01), Flora
patent: 4277693 (1981-07-01), Hoekman
patent: 4282493 (1981-08-01), Moreau

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