Threshold setting apparatus for adjustably setting a...

Details Threshold setting apparatus for adjustably setting a... Threshold setting apparatus for adjustably setting a...

2005-04-19

2005-04-19

Nghiem, Michael (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

Reexamination Certificate

active

06882944

ABSTRACT:
Threshold setting apparatus controls a relative relation in DC level between a baseband signal produced by processing a received signal and a threshold for use in identifying serial data from the baseband signal. The apparatus includes a waveform distortion estimating circuit and a setting circuit. The waveform distortion estimating circuit estimates, based on the baseband signal, a relation between the center of the dynamic range of the baseband signal and a crossing point where a positive-going edge curve crosses a negative-going edge curve of an eye pattern formed by the baseband signal. The setting circuit adjustably sets either the threshold or the DC level of the baseband signal in dependence upon the relation estimated by the waveform distortion estimating circuit.

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