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US 2002/0051446 A1Published application
Rearrangeable switch having a non-power of two number of physical center stages
AssigneeCiena Corporation
InventorsDaniel E. Klausmeier, Jeffrey T. Gullicksen
Life of this patent
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Abstract
The present invention utilizes a combination of time division and space switching to logically create 2n center stage switching circuits in a switch reconfigurable based on the Looping Algorithm, even though the switch includes a non-power of 2 number of center stage physical switches.
Claims15
A switch, comprising:
- a first stage having a plurality of first switch circuits, each of said plurality of first switch circuits having a plurality of inputs and a plurality of outputs;
- a second stage having a plurality of second switch circuits, each of said plurality of second switch circuits having a plurality of inputs, each of which being respectively coupled to one of said plurality of outputs of each of said plurality of first switch circuits, and a plurality of outputs, a number of said plurality of second switch circuits equaling N, where N is an integer other than a power of 2;
- and
- a third stage having a plurality of third switch circuits, each of said plurality of third switch circuits having a plurality of inputs and a plurality of outputs, each of said plurality of inputs of each of said plurality of third switch circuits being coupled to a respective one of said plurality of outputs of each of said plurality of second switch circuits.
1 more element
A data transmission method, comprising the steps of:
- routing said data through a first switch stage, said first switch stage including a plurality of first switch circuits, said first switch circuits being configured to be logically represented as a first plurality of 2×2 switches;
- routing said data through a second switch stage, said second switch stage having N switch circuits, where N is other than a power of 2;
- and
- routing said data through a third switch stage, said third switch stage including a plurality of third switch circuits, said third switch circuits being configured to be logically represented as a second plurality of 2×2 switches.
1 more element
Dependencies are inferred from the claim text.