Oscillators – Automatic frequency stabilization using a phase or frequency... – Plural a.f.s. for a single oscillator
Reexamination Certificate
2005-02-22
2005-02-22
Mis, David (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Plural a.f.s. for a single oscillator
C331S00100A, C331S018000, C331SDIG002, C327S043000, C375S376000
Reexamination Certificate
active
06859107
ABSTRACT:
A frequency comparator apparatus used with a reference clock, a voltage controlled oscillator circuit and a phase locked loop circuit includes a reference loop circuit wherein the reference loop circuit is activated when the frequency difference between the reference clock and the voltage controlled oscillator circuit is greater than about a first threshold. Also included is a data loop circuit wherein the data loop circuit is activated when the frequency difference between the reference clock and the voltage controlled oscillator circuit is less than about a second threshold.
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Ahn Gijung
Jeong Deog-Kyoon
Moon Yongsam
Mis David
Perkins Coie LLP
Silicon Image Inc.
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