H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
325/1, 88/97.4
H04Q 3/52 (2006.01) H04Q 1/16 (2006.01)
Patent
CA 1280465
AN OPTICAL BACKPLANE Abstract The present invention relates to an optical backplane for use in a switching system or computer for interconnecting a plurality of associated circuit modules. The backplane comprises a switch which is interconnected to each of the associated circuit modules by a separate multifiber ribbon, each ribbon including (1) a plurality of transmit and receive optical fibers, and (2) an optical fiber for providing concurrent synchronization signals to each of the associated circuit modules. The switch includes a switching block for coupling parallel optical signals received from the plurality of receive optical fibers in any multifiber ribbon, transmitted by a sending module, to the transmit fibers of each of the multifiber ribbons for transmission to all of the modules associatedwith the optical backplane. The switch also includes a timing generation block which generates an optical timing signal that is simultaneously distributed to the separate optical fibers in each of the multifiber ribbons in order to concurrently synchronize all of the associated modules. Each of the associated modules is connected to the backplane via the separate associated optical multifiber ribbon, and includes (1) an interface logic block for interfacing an associated user circuit to the optical backplane, and (2) a means for permittingthe module to contend for access to the optical backplane.
581731
Follett David Rhodes
Sobin David L.
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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