Browse Prior Art Database

Bidirectional Data Translation Arrays

IP.com Disclosure Number: IPCOM000083932D
Original Publication Date: 1975-Aug-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 3 page(s) / 96K

Publishing Venue

IBM

Related People

Wu, WW: AUTHOR

Abstract

Array structured decoders, as described in the IBM Technical Disclosure Bulletin, Vol. 17, No. 3, August 1974, page 813, are configurable in combinations to provide decoding and encoding translations of data in a bidirectional communication network (e.g., for security purposes). Such devices permit extensive sharing of circuits controlling the direction and translational path of signal flow.

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Bidirectional Data Translation Arrays

Array structured decoders, as described in the IBM Technical Disclosure Bulletin, Vol. 17, No. 3, August 1974, page 813, are configurable in combinations to provide decoding and encoding translations of data in a bidirectional communication network (e.g., for security purposes). Such devices permit extensive sharing of circuits controlling the direction and translational path of signal flow.

Fig. 1 shows an array for decode/encode usage having send/receive circuits S/R for directional control. Circuits S/R comprise flip-flop controlled gates to control direction of signal transfer (from horizontal lines to vertical lines of the array in S state, and from vertical lines to horizontal lines in R state). S state translations effect decoding of n element digital to 1 of 2/n/, and R state translations provide encoding of 1 of 2/n/ to n element digital.

The cross-point switching cells operating according to the above-referenced earlier Bulletin article, control logical cross-point coupling between horizontal and vertical lines (in both directions).

Fig. 2 shows an n line to n line bidirectional code translation device formed by two array structures, each organized as in Fig. 1. Such device may interface between user ports on the left and communication channel ports on the right. In addition, bistable elements of horizontal rows of each array are coupled for dynamic end-around shifting, giving additional flexibility in the translati...