Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Reexamination Certificate
2006-10-17
2006-10-17
Benson, Walter (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
C324S606000
Reexamination Certificate
active
07123025
ABSTRACT:
There is provided a differential comparator circuit that is mounted on a test apparatus for testing a device under test outputting differential signals including noninverted signals and inverted signals. The differential comparator circuit includes: a difference signal subtracting circuit operable to compute and output a difference signal indicative of a difference between the noninverted signal and the inverted signal; a first threshold value subtracting circuit operable to compute and output a first threshold voltage indicative of a difference between a first comparative voltage generated based on ground potential of the device under test and a reference voltage generated based on the ground potential of the device under test; and a first comparing circuit operable to compare the difference signal and the first threshold voltage to output a comparison result.
REFERENCES:
patent: 6429695 (2002-08-01), Miyabe et al.
patent: 6462558 (2002-10-01), Taurand
patent: 6836127 (2004-12-01), Marshall et al.
Awaji Toshiaki
Sekino Takashi
Advantest Corporation
Benson Walter
Osha & Liang LLP
LandOfFree
Differential comparator circuit, test head, and test apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential comparator circuit, test head, and test apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential comparator circuit, test head, and test apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3691754