Simplified switching control device, and a network system for em

Details Simplified switching control device, and a network system for em Simplified switching control device, and a network system for em

1997-07-01

1999-01-12

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359124, 359121, 370430, 370436, H04J 1402, H04Q 1102

Patent

active

058597182

ABSTRACT:
A switching device include a buffer for temporarily storing a signal sent by a corresponding input terminal; variable channel transmission units, one of which is provided for each input terminal, for outputting a received signal with one of N different channels; fixed channel reception units, one of which is provided for each output terminal, for receiving the signal carried with a given channel and for outputting a signal with the given channel to a corresponding output terminal, with the given channel not overlapping any other; a variable channel control unit for synchronously altering, in consonance with predetermined patterns, channels with which the variable channel transmission unit outputs a signal, so that two or more variable channel transmission units do not simultaneously output signals with the same channel; and a buffer control unit for synchronously reading from the buffer a signal that is to be output, while altering the channel with which the variable channel transmission unit transmits a signal. Provided for the buffer is a function for sorting signals for output terminals at which the signals are to be output, and weighting of predetermined patterns is performed with a time at which one variable channel transmission unit outputs signals with the individual channels during one pattern cycle.

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Arthurs et al, Hypass: An Optoelectronic Hybrid Packet Switching System, IEEE Journal on selected areas in communications, vol. 6, No. 9, Dec. 1988.
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"Multiwavelength Networks and New Approaches to Packet Switching" by Matthew S. Goodman; IEEE Communications Magazine, Oct., 1989; pp. 27-35.
"Pigtailed High-Finesse Tunable Fibre Fabry-Perot Interferometers With Large, Medium and Small Free Spectral Ranges" by J. Stone et al.; Electronics Letters; vol. 23., No. 15, Jul. 16, 1987; pp. 781-783.

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