Bidirectional buffered interface for crosspoint switch

Details Bidirectional buffered interface for crosspoint switch Bidirectional buffered interface for crosspoint switch

2005-10-19

2009-02-17

Odom, Curtis B (Department: 2611)

Pulse or digital communications

Cable systems and components

C375S219000, C398S045000, C376S268000

Reexamination Certificate

active

07492826

ABSTRACT:
A bidirectional crosspoint switch interface employs a pair of backward-connected transimpedance amplifiers of the type disclosed in the L. Enriquez U.S. Pat. No. 6,411,163, and associated scaling current mirrors that drive nodes of associated reverse signal cancellation circuits. The reverse signal cancellation circuits are coupled to respective pairs of ports of the crosspoint switch and input and output ports of 1:1 current mirrors, in a manner that affords bidirectional buffering between the crosspoint switch and a pair of bidirectional signaling ports that terminate respective signaling links, without signal reflections.

REFERENCES:
patent: 6411164 (2002-06-01), Enriquez
Dallas Semiconductor MAXIM, Amplifier and Comparator Circuits, Interface Circuits, Video Circuits, Jul. 9, 1998, WTAs Provide Wideband, Bidirectional Drive For Coaxial Cable.

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