Multiplex communications – Wide area network – Packet switching
Patent
1989-06-09
1991-12-10
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 99, H04J 302
Patent
active
050724460
ABSTRACT:
A digital communication apparatus interleaves multiple bit sequences of a predetermined length from a plurality of input signals all at one rate to a single output data stream at a higher rate. Normally the multiple bit sequences will be bytes. The apparatus comprises for each input signal (IN1-In4) a first array (10-13) of storage circuits for storing sequentially in series each multiple bit sequence of predetermined length, the first arrays (10-13) being arranged in parallel, a reader for reading in parallel each of the stored bit sequences in the first arrays into second arrays (90-93) of storage circuits so that the bits of the stored sequences are interleaved, and a combiner (20) for combining the sequences output from the second arrays in such a manner that the output data stream contains the original multiple bit sequences interleaved so that in the final output stream a multiple bit sequence from one input signal is separated from the next multiple bit sequence of that signal by multiple bit sequences from each of the other input signals.
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patent: 4817090 (1989-03-01), Pfennings
patent: 4881224 (1989-11-01), Bains
patent: 4924459 (1990-04-01), Angell et al.
GEC Plessey Telecommunications Limited
Olms Douglas W.
Ton Dang
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