Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2004-06-23
2008-10-07
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S147000, C331S044000
Reexamination Certificate
active
07432749
ABSTRACT:
A circuit and method for providing a periodic clock signal, such as a high frequency clock signal. In one example, the circuit may include a phase locked loop circuit having a voltage controlled oscillator, the voltage controlled oscillator having a voltage input, a calibration input, and a clock signal output; and a logic circuit for dynamically calibrating an operating frequency of the phase locked loop during operation of the phase locked loop. In one embodiment, the logic circuit may compare an input voltage into the voltage controlled oscillator against a reference voltage, and if the input voltage is lower than the reference voltage, the logic circuit decreases the operating frequency of the phase locked loop circuit. The logic circuit may compare an input voltage into the voltage controlled oscillator against a reference voltage, and if the input voltage is higher than the reference voltage, the logic circuit increases the operating frequency of the phase locked loop circuit.
REFERENCES:
patent: 5491458 (1996-02-01), McCune, Jr.
patent: 5651035 (1997-07-01), Tozun
patent: 5831482 (1998-11-01), Salvi et al.
patent: 5886582 (1999-03-01), Stansell
patent: 5905389 (1999-05-01), Alleven
patent: 5912569 (1999-06-01), Alleven
patent: 5929664 (1999-07-01), Alleven
patent: 5952888 (1999-09-01), Scott
patent: 6040792 (2000-03-01), Watson et al.
patent: 6073193 (2000-06-01), Yap
patent: 6097244 (2000-08-01), Chen
patent: 6124750 (2000-09-01), Alleven et al.
patent: 6172571 (2001-01-01), Moyal et al.
patent: 6175282 (2001-01-01), Yasuda
patent: 6211741 (2001-04-01), Dalmia
patent: 6272646 (2001-08-01), Rangasayee et al.
patent: 6307413 (2001-10-01), Dalmia et al.
patent: 6310521 (2001-10-01), Dalmia
patent: 6369660 (2002-04-01), Wei et al.
patent: 6377646 (2002-04-01), Sha
patent: 6389494 (2002-05-01), Walton et al.
patent: 6424229 (2002-07-01), Justice et al.
patent: 6445211 (2002-09-01), Saripella
patent: 6466078 (2002-10-01), Stiff
patent: 6496075 (2002-12-01), Justice et al.
patent: 6496556 (2002-12-01), Huehne et al.
patent: 6541879 (2003-04-01), Wright
patent: 6553057 (2003-04-01), Sha et al.
patent: 6560306 (2003-05-01), Duffy et al.
patent: 6625761 (2003-09-01), Sartore et al.
patent: 6667642 (2003-12-01), Moyal
patent: 6671831 (2003-12-01), Sartore et al.
patent: 6683930 (2004-01-01), Dalmia
patent: 6690224 (2004-02-01), Moore
patent: 6691201 (2004-02-01), Williams et al.
patent: 6704381 (2004-03-01), Moyal et al.
patent: 6747519 (2004-06-01), Jaehne et al.
patent: 6754725 (2004-06-01), Wright et al.
patent: 6782068 (2004-08-01), Wilson et al.
patent: 6813672 (2004-11-01), Kamran et al.
patent: 6820160 (2004-11-01), Allman
patent: 6839778 (2005-01-01), Sartore et al.
patent: 6850554 (2005-02-01), Sha et al.
patent: 6859073 (2005-02-01), Dai et al.
Gehring Mark
Moyal Nathan
Cypress Semiconductor Corp.
Le Dinh T.
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