Switching unit for the transfer of digitized signals in PCM syst

Details Switching unit for the transfer of digitized signals in PCM syst Switching unit for the transfer of digitized signals in PCM syst

1981-05-12

1983-05-31

Robinson, Thomas A.

Multiplex communications

Wide area network

Packet switching

H04Q 1104

Patent

active

043864252

ABSTRACT:
A switching unit for the selective transfer of bytes concurrently arriving in successive time slots over eight incoming signal paths to as many outgoing signal paths with intervening temporal and/or spatial transposition comprises a byte memory loaded by way of a series/parallel converter and read out by way of a parallel/series converter; two 8.times.8 storage matrices may alternately serve as the two converters. A routing memory, connected via a logic network to a command unit such as a microprocessor, controls the transfer and may also block the readout from the byte memory under certain conditions, specifically during an initiation procedure or where the switching unit is one of several such units forming part of a larger switching or concentration structure. In response to particular instructions from the command unit, a single byte from an incoming path may be transferred to one or all of the outgoing paths.

REFERENCES:
patent: 4093827 (1978-06-01), Charransol et al.
patent: 4154982 (1979-05-01), Charransol et al.

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