Browse Prior Art Database

Adaptive Order Wire System

IP.com Disclosure Number: IPCOM000094063D
Original Publication Date: 1966-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 3 page(s) / 38K

Publishing Venue

IBM

Related People

Featherston, JR: AUTHOR

Abstract

This adaptive communications system permits reliable operation of a transmitter under the control of a remote receiver. Only the channel facilities normally present in a full duplex data transmission system are used.

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Adaptive Order Wire System

This adaptive communications system permits reliable operation of a transmitter under the control of a remote receiver. Only the channel facilities normally present in a full duplex data transmission system are used.

Traffic flowing between station A and station B is in block form. A part of each block is reserved for selected order wire, i.e., control, characters. In the store- and-forward, error-detection-with retransmission concept used here, these order wire characters are sent during the message ARQ confirmation time. The actual multiplex approach used on the radio circuit can be selected in accordance with the channeling equipment available and the form of the traffic. If the channeling is by frequency multiplexing rather than time multiplexing, a separate low capacity subchannel can be used for the order wire characters and the traffic can operate continuously. The desired standard of operation on the station A to station B path is determined by logic at receiver 10 on the basis of the currently received signals. The instructions to transmitter 20 are inserted in the order wire character positions of messages flowing from transmitter 12 to receiver 22.

The major cause of radio circuit change is the relative position of the radio path and the sun, resulting in a repeating diurnal pattern of change. The operation of the logic should be reliable even during marginal circuit conditions on both paths. This can be accomplished as follows. A reference to real time is provided by clocks 14 and 24 at each station. The 24-hour period is divided into 96 intervals of 15 minutes each by each clock.

The operation of the remote transmitter is directly under the control of the local receiver. The operating p...