Browse Prior Art Database

Improved Efficiency Loop

IP.com Disclosure Number: IPCOM000081015D
Original Publication Date: 1974-Mar-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Thorpe, RA: AUTHOR

Abstract

A multipath terminal communication loop (Fig. 1) may comprise primary and secondary loop circuit paths which can be linked to selectively route signals around improperly functioning stations or terminal nodes. Fig. 2 shows that the bypass controls at each node can route signals either through the normally used primary path or to or from the secondary path; thereby permitting the network to be configured to carry signals around faulty node J via the secondary path, and the continuation of the primary path beyond the fault.

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Improved Efficiency Loop

A multipath terminal communication loop (Fig. 1) may comprise primary and secondary loop circuit paths which can be linked to selectively route signals around improperly functioning stations or terminal nodes. Fig. 2 shows that the bypass controls at each node can route signals either through the normally used primary path or to or from the secondary path; thereby permitting the network to be configured to carry signals around faulty node J via the secondary path, and the continuation of the primary path beyond the fault.

Such networks are ordinarily provided with repeater elements in each segment of the primary path and in each segment of the secondary path (Fig. 1). One repeater may be eliminated from each segment for the sake of economy (Fig. 3); by 1) adjusting the maximum length allowance per segment, so that the distance between alternate repeaters is less than the maximum segment length of a two-repeater-per-segment network. and 2) normally operating the system utilizing both primary and secondary paths.

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