Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2005-01-10
2008-09-30
Nguyen, Ha (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S525000, C324S537000, C324S719000, C324S765010
Reexamination Certificate
active
07429867
ABSTRACT:
Various embodiments of the present invention describe circuits for and methods of detecting a defect in a component formed in a substrate of an integrated circuit. According to one embodiment, a circuit comprises a plurality of components formed in a substrate and coupled in series by a plurality of signal paths extending from a first end to a second end. An input signal coupled to the first end of the first signal path is detected a signal detector coupled to a second end of the first signal path to determine whether there is a defect in a component formed in the substrate. Switching networks at the inputs and the outputs of the plurality signal paths enable determining a particular signal path that had a defect. Alternate embodiments describe circuits for determining the location of a defective component in a signal path. Various methods of detecting defective components are also described.
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Chan Emily Y
King John J.
Nguyen Ha
Xilinx , Inc.
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