Oscillators – With frequency calibration or testing
Reexamination Certificate
2006-05-16
2006-05-16
Chang, Joseph (Department: 2817)
Oscillators
With frequency calibration or testing
C331S057000
Reexamination Certificate
active
07046094
ABSTRACT:
A method and ring oscillator circuit for measuring circuit delays over a wide operating range permits improved analysis of dynamic circuits. A pulse generator circuit provides a pulse to an input of a dynamic circuit under test, which may be a pre-charge or evaluation pulse that is triggered by a transition of an output of the dynamic circuit that occurs during the state opposite that of the state commanded by the pulse. The action of the circuit provides for measuring any amount of delay to the next transition in the opposite state irrespective of the pulse width. By providing a wide-range of operation, characteristics such as leakage, charge sharing, data dependent node capacitance, previous value dependence as well as other dynamic circuit behaviors may be determined. The ring oscillator circuit includes an enable start circuit that causes a first pulse to be generated by the one-shot when the ring oscillator circuit is enabled.
REFERENCES:
patent: 6538522 (2003-03-01), Aipperspach et al.
patent: 6734743 (2004-05-01), Korson et al.
patent: 6734744 (2004-05-01), Monzel et al.
patent: 6741136 (2004-05-01), Seo
patent: 6909301 (2004-06-01), Korson et al.
Belluomini Wendy Ann
Martin Andrew Kenneth
McDowell Chandler Todd
Chang Joseph
Harris Andrew M.
International Business Machines - Corporation
Salys Casimer K.
Weiss, Moy & Harris P.C.
LandOfFree
Method and ring oscillator circuit for measuring circuit... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and ring oscillator circuit for measuring circuit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and ring oscillator circuit for measuring circuit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3604066