Oscillators – Automatic frequency stabilization using a phase or frequency... – Particular error voltage control
Reexamination Certificate
2011-01-18
2011-01-18
Mis, David (Department: 2817)
Oscillators
Automatic frequency stabilization using a phase or frequency...
Particular error voltage control
C331S008000, C331S011000, C331S016000, C331S025000
Reexamination Certificate
active
07872536
ABSTRACT:
A variance correction method includes generating a reference current depending on a resistance within a lowpass filter and outputting the reference current to a voltage controlled oscillator, and correcting characteristics of the lowpass filter and a gain of the voltage controlled oscillator based on an output clock of the voltage controlled oscillator.
REFERENCES:
patent: 7352249 (2008-04-01), Balboni et al.
patent: 2003/0042985 (2003-03-01), Shibahara et al.
patent: 2006/0012442 (2006-01-01), Shinbo et al.
patent: 2001-016102 (2001-01-01), None
patent: 2003-078410 (2003-03-01), None
patent: 2006-033108 (2006-02-01), None
Kondo Masafumi
Mori Toshihiko
Arent & Fox LLP
Fujitsu Limited
Mis David
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