Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2011-04-05
2011-04-05
Nguyen, Ha Tran (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
Reexamination Certificate
active
07919975
ABSTRACT:
A differential signaling system, wherein a first wiring and a second wiring are coupled between a sending end and a receiving end as a differential signal line. A termination resistor is coupled between the first wiring and the second wiring in the receiving end side. A test circuit is coupled to the termination resistor in parallel, and amplifies and detects a variation of a differential impedance due to the differential signal line. The test circuit includes: a differential test amplifier for amplifying a variation in the differential impedance of the first wiring or the second wiring; a switching unit installed at an input terminal of the differential test amplifier for controlling an operation of the differential test amplifier; and a peak detector for converting an output signal of the differential test amplifier into a direct current component; and a phase detector for detecting a skew, a time delay, and/or a phase difference of a signal inputted to the differential signal line.
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Notice of Allowance issued in corresponding Korea Patent Application No. 10-2007-0032573 dated Jun. 25, 2008.
Benitez Joshua
Nguyen Ha Tran
Samsung Mobile Display Co., Ltd.
Stein McEwen, LLP
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