Oscillators – Automatic frequency stabilization using a phase or frequency... – Particular error voltage control
Reexamination Certificate
2005-09-27
2005-09-27
Mis, David (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Particular error voltage control
C331S00100A, C331S014000, C331S016000, C331S025000, C331S03600C, C331S17700V, C331S179000
Reexamination Certificate
active
06949980
ABSTRACT:
A phase-locked loop including an oscillator, controlled by a control signal generated by a comparison circuit comparing a reference frequency and the oscillator frequency and filtered by an integrator low-pass filter; a control and adjustment circuit for, with a predetermined frequency smaller than the reference frequency, taking into account the value of the filtered controlled signal and, if this value is out of a range of predetermined values, adjusting the operating range of the oscillator; and an inhibition circuit for deactivating the comparison circuit for a predetermined duration before taking into account the value of the filtered control signal.
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French Search Report from corresponding French National Appl. No. 0111472, filed Sep. 5, 2001.
Jouen Philippe
Kraemer Michael
Jorgenson Lisa K.
Mis David
Morris James H.
STMicroelectronics S.A.
Wolf Greenfield & Sacks P.C.
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