Method and device for injecting a differential current noise...

Details Method and device for injecting a differential current noise... Method and device for injecting a differential current noise...

2008-05-06

2008-05-06

Ha, Dac V. (Department: 2611)

Pulse or digital communications

Testing

C375S257000, C379S416000, C370S247000, C370S248000, C370S251000

Reexamination Certificate

active

07369605

ABSTRACT:
The present invention relates to a device and method for injecting a noise signal into a wire pair of a communication link. In operation a first current source and a second current source are disposed in series with a node therebetween coupled resistively to a wire of the wire pair. A current flow path is provided for balancing the current from the two current sources. A similar circuit is also coupled to the other wire of the wire pair.

REFERENCES:
patent: 6442239 (2002-08-01), Abdo et al.
patent: 6459739 (2002-10-01), Vitenberg
patent: 7184469 (2007-02-01), Joseph et al.
patent: 7260152 (2007-08-01), Golo
Koenig et al. (US 2002/0172159); Nov. 21, 2002; Receier-End Supplementary Circuit For Boundary Scan In Data Transmission With Diffrential Signals.

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