Oscillators – Automatic frequency stabilization using a phase or frequency... – Tuning compensation
Reexamination Certificate
2008-07-22
2008-07-22
Chang, Joseph (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Tuning compensation
C327S156000
Reexamination Certificate
active
07403073
ABSTRACT:
A phase locked loop (PLL) which includes a phase frequency detector coupled with a time to digital converter capable of comparing a reference signal with an oscillator signal and generating a digital value representing the phase difference between the reference signal and the oscillator signal. The PLL further includes a state machine for phase acquisition that is capable of generating a control value depending on the digital value, and a controllable oscillator that is capable of generating the oscillator signal depending on the control value.
REFERENCES:
patent: 6429693 (2002-08-01), Staszewski et al.
patent: 2006/0171495 (2006-08-01), Youssouflan
patent: 2007/0047689 (2007-03-01), Menolfi et al.
patent: 1443653 (2004-08-01), None
Kossel Marcel A.
Morf Thomas E.
Schmatz Martin L.
Wehrli Silvan
Chang Joseph
International Business Machines - Corporation
Tuchman Ido
Yamonaco Lisa M.
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