Multiplex communications – Wide area network – Packet switching
Patent
1985-09-23
1987-03-10
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 307
Patent
active
046495363
ABSTRACT:
A flexible multiplex system for time-division transmission of one of a selectable number of asynchronous digital signals of nominally equal data rates is described. The apparatus is designed to accommodate asynchronous sources by the use of bit-stuffing, which is coded into the composite signal prior to transmission. The demultiplexer of the system is provided with means for decoding the bit stuffing and delivering the signal to plural outputs available in elastic storage. The multiplex system is designed to accommodate two, three, four, six, eight or twelve input sources in a typical application, the actual selection being made by user accessible selection means. The multiplexed composite bit rate is typically 3 to 19 Mb/sec and the output signal is suited to transmission over digital radio or cable.
REFERENCES:
patent: 3987248 (1976-10-01), Platet et al.
patent: 4002844 (1977-01-01), Doussoux
patent: 4132862 (1979-01-01), Ferret et al.
patent: 4387459 (1983-06-01), Huffman
patent: 4397017 (1983-08-01), Rokugo
patent: 4542500 (1985-09-01), Jean-Claude
Motorola Inc.
Olms Douglas W.
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