Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2006-07-04
2006-07-04
Lee, Diane (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S711000, C324S677000, C324S679000
Reexamination Certificate
active
07071711
ABSTRACT:
A method and device for determining the ratio between the actual value of an RC time constant of an RC network embodied in an integrated circuit and a set value of the RC time constant includes first and second reference RC networks each having a resistor and a capacitor. The two RC networks may be oppositely connected in a circuit arrangement between first and second supply potentials, where the product of the resistance and capacitance values of the two RC networks may be equal. A normalized RC time constant may be defined for the two reference RC networks. Successive charge and discharge cycles are implemented during a predetermined evaluation period, the two capacitors being charged in a cycle during a charge time until the potential at a first node of the first reference RC network approximately corresponds to the potential at a second node of the second reference RC network. The two capacitors may be subsequently discharged for a discharge time. The evaluation period may be matched to the normalized RC time constant such that, assuming the RC time constant of the two reference RC networks corresponds to the normalized RC time constant, a predetermined number of charge and discharge cycles can be implemented during the evaluation period. The number of charge and discharge cycles actually implemented may be determined, and the quotient of the predetermined number and the determined number may be generated to provide the ratio between the measured RC time constant and the normalized RC time constant.
REFERENCES:
patent: 5274334 (1993-12-01), Mills
patent: 6262603 (2001-07-01), Mohan et al.
patent: 6628163 (2003-09-01), Dathe et al.
patent: 6640628 (2003-11-01), Lutke et al.
patent: 6753695 (2004-06-01), Toda et al.
patent: 05209929 (1992-01-01), None
patent: 10206489 (1997-01-01), None
Bauer Achim
Gaier Ulrich
Trojer Martin
Kramskaya Marina
Lee Diane
Micronas GmbH
O'Shea Getz & Kosakowski P.C.
LandOfFree
Method and device for determining the ratio between an RC... 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 device for determining the ratio between an RC..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for determining the ratio between an RC... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3569919