Device for the recovery of a clock signal from a binary signal

Details Device for the recovery of a clock signal from a binary signal Device for the recovery of a clock signal from a binary signal

1981-12-07

1984-03-13

Heyman, John S.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 11, 331 14, H03L 708

Patent

active

044370717

ABSTRACT:
The device for controlling a local clock signal H both in frequency and in phase by means of a binary signal S comprises logical means for delivering two signals S.sub.1 and S.sub.3 representing respectively the sign of the phase difference and the sign of the frequency difference between the signals H and S. The signal H is generated by a voltage-controlled oscillator circuit, the control voltage of which is generated by a tuning control circuit as a function of the signal S.sub.1 when the frequency of the signal H is close in value to the desired frequency and as a function of the signal S.sub.3 when this is not the case.

REFERENCES:
patent: 3370249 (1968-02-01), Martin
patent: 3458823 (1969-07-01), Nordahl
patent: 3611175 (1971-10-01), Boelke
patent: 4069462 (1978-01-01), Dunn

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