Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2005-08-02
2005-08-02
Tang, Minh N. (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S763010
Reexamination Certificate
active
06924658
ABSTRACT:
A device and a method are used to check signal transmission quality of a circuit board. The circuit board communicates a source device with a destination device via a trace. The device for checking signal transmission quality is arranged in the source device, and includes a first comparator electrically connected to the trace, and generating a first counting signal in response to a first comparison result of a test signal transmitted through the trace with a first reference signal; a first counter electrically connected to the first comparator, and counting in response to the first counting signal to generate a first accumulatively counted value; and a discriminator determining the signal transmission quality of the circuit board according to accumulatively counted value.
REFERENCES:
patent: 5659257 (1997-08-01), Lu et al.
patent: 5815001 (1998-09-01), Michael
patent: 5818251 (1998-10-01), Intrater
patent: 6124715 (2000-09-01), Chakraborty
Madson & Metcalf
Tang Minh N.
Via Technologies Inc.
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