H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) H04Q 3/52 (2006.01)
Patent
CA 2172033
In an optical ATM switching system, a multicasting control means generates a multicast control signal indicating destinations of copies of an optical ATM cell. A plurality of interface means inserts a plurality of optical copying bits into an optical ATM cell in response to the multicast control signal. An optical copynetwork has a plurality of inlets connected respectively to the plurality of interface means for producing copies of ATM cell from each of the plurality of interface means and for routing the copies to a plurality of outlets of the copy network according to the copying bits. The copy network has a means for generating an electrical signal of different timing, and a plurality of optical splitters connected respectively to the plurality of interface means. The copy network also has a plurality of optical gates connected to outputs of different ones of the optical splitters for allowing passage of an incident optical ATM cell when the copying bits of the cell timely coincide with one of the electrical signals, and further has a plurality of optical combiners, each combiner corresponding to a group of the optical gates for combining ATM cells from the optical gates of the corresponding group and coupling the combined ATM cells to one of the outlets of the copy network.
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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