Telegraphy – Systems
Patent
1983-08-04
1985-04-16
Schreyer, Stafford D.
Telegraphy
Systems
H04L 1310
Patent
active
045117594
ABSTRACT:
Apparatus for controlling the transfer of data between computers, connected to a communications network, accessible to at least one terminal by means of an asynchronous concentrator, which is connected between the network and an input-output junction of the terminal, comprising means connected between the input-output junction of the terminal and the concentrator, in order to asynchronously establish via the concentrator, a first virtual circuit between the terminal and a first computer of the network, then a second virtual circuit between the terminaland a second computer of the network, and connecting means for connecting the thus established virtual circuits, the transfers of files between the first and second computers then taking place across these connecting means, wherein the means for establishing the first and second circuits comprise at least one two-position switch having a common terminal member connected to the input-output junction of the terminal and two switching terminal members connected to the concentrator and corresponding to the two positions of the switch, the latter making it possible to establish the first and second virtual circuits.
REFERENCES:
A FIPS Conference Proceedings, 5-4-81, K. Hwang et al., "Engineering Computer Network": A Hardwired Network of UNIX Computer Systems, pp. 191-201.
IEEE Transactions on Communications, vol. COM-29, 4-81, No. 4, W. Tymes, Routing and Flow Control in Tymnet, pp. 329-398.
Patent Abstracts of Japan, vol. 5, No. 175, 11-11-81, p. 847.
IEEE International Conference on Communications, Conference Record, vol. 1, Jun. 13, 1982, "Terminal Interfaces for a Packet-Switched Network", p. 2.
Nachrichtentechnische Zeitschrift, vol. 32, No. 3, 3-79, H. Sarbinowski, "Die Nutzung Offentlicher Datenpaketvermittlungs-Dienste", pp. 177-182.
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