Multiplex communications – Pathfinding or routing – Through a circuit switch
Reexamination Certificate
2006-08-08
2006-08-08
Pham, Chi (Department: 2616)
Multiplex communications
Pathfinding or routing
Through a circuit switch
C439S061000, C361S788000
Reexamination Certificate
active
07088711
ABSTRACT:
A high-speed router backplane is disclosed. The disclosed construction and layout techniques enable the construction of a reliable, high-layer-count, and economical backplane for routers and the like that use signaling across the backplane at trace speeds of 2.5 Gbps or greater. Specific ranges of differential trace geometry characteristics, with significant single-ended coupling to adjacent ground planes, have been found to provide the parameters needed for such signaling. New trace routing and layering techniques also help in the realization of a backplane embodiment containing roughly 600 operable high-speed differential pairs, while also providing sufficient electromagnetic interference management to allow power distribution to occur within the same backplane.
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Armistead Ashby
Goergen Joel R.
Hunt Greg
Forcelo Networks, Inc.
Haynes and Boone LLP
Tran Phuc
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