Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2011-01-18
2011-01-18
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
Reexamination Certificate
active
07872518
ABSTRACT:
A circuit for detecting, whether a voltage difference is below a desired voltage difference comprises a voltage shift resistor, a current provider and a detection circuit. The current provider provides a current flowing through the voltage shift resistor such that the desired voltage difference across the voltage shift resistor is determined by a reference signal. The detection circuit is configured to compare a first voltage at a first input with a voltage at a second input to obtain a signal. The voltage shift resistor is coupled between a conductor for a second voltage and the second input, such that the voltage at the second input differs from the second voltage by the desired voltage difference, and wherein the detection circuit is configured to provide the signal, such that the signal indicates, whether the voltage difference between the first and the second voltage is below the desired voltage difference.
REFERENCES:
patent: 5059888 (1991-10-01), Van Tuijl et al.
patent: 6573768 (2003-06-01), Hwang
patent: 7502719 (2009-03-01), Moraveji
patent: 2002/0050854 (2002-05-01), Zha et al.
patent: 2008/0007321 (2008-01-01), Castaldo et al.
Kresse Julia
Mayerl Christoph
Saas Christoph
Tischendorf Dennis
Weder Uwe
Dickstein & Shapiro LLP
Donovan Lincoln
Infineon - Technologies AG
Rojas Daniel
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