Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – With auxiliary means to condition stimulus/response signals
Reexamination Certificate
2007-06-25
2008-08-26
Nguyen, Vincent Q. (Department: 2831)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
With auxiliary means to condition stimulus/response signals
C327S103000
Reexamination Certificate
active
07417439
ABSTRACT:
An impedance conversion circuit including: a first voltage-to-current converter and a second voltage-to-current converter supplied with differential input signal voltages; an inverting amplifier; and a third voltage-to-current converter for feedback; wherein a first resistance and a second resistance are connected in series with each other between an input terminal and an output terminal of the inverting amplifier, an output terminal of the first voltage-to-current converter is connected to the input terminal of the inverting amplifier, an output terminal of the second voltage-to-current converter is connected to a connection node of the first resistance and the second resistance, the output terminal of the inverting amplifier is connected to an input terminal of the third voltage-to-current converter, an output terminal of the third voltage-to-current converter is connected to an input terminal of the first voltage-to-current converter, and an impedance is connected between the connection node and a ground.
REFERENCES:
patent: 4591739 (1986-05-01), Nagano
patent: 5126586 (1992-06-01), Gilbert
patent: 5249224 (1993-09-01), Cahmbers
patent: 6107842 (2000-08-01), Hirabayashi et al.
patent: 6346804 (2002-02-01), Ueno et al.
patent: 6577139 (2003-06-01), Cooper
patent: 6828832 (2004-12-01), Gabillard
patent: 6906586 (2005-06-01), Sakurai
patent: 7196555 (2007-03-01), Taylor
patent: 7224193 (2007-05-01), Sudou et al.
patent: 2003/0122551 (2003-07-01), Male
patent: 2005/0030046 (2005-02-01), Yakabe et al.
patent: 2005/0099211 (2005-05-01), Dahlin
patent: 11-205087 (1999-07-01), None
Hirabayashi Atsushi
Komori Kenji
Depke Robert J.
Nguyen Hoai-An D
Nguyen Vincent Q.
Rockey Depke & Lyons, LLC
Sony Corporation
LandOfFree
Impedance conversion circuit and integrated 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 Impedance conversion circuit and integrated circuit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impedance conversion circuit and integrated circuit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3993665