Browse Prior Art Database

Multipath Transfer Circuits

IP.com Disclosure Number: IPCOM000098714D
Original Publication Date: 1959-Oct-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Kahn, AA: AUTHOR [+2]

Abstract

The drawing shows a three-core-per-bit shifting circuit employing bistable magnetic multipath cores and single turn drive and connecting wires. The arrows in the flux chart below indicate the direction of flux in the legs of the cores directly above following each drive pulse. The drive pulses are applied in the order shown by the pulse symbols superimposed on the drive lines.

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Multipath Transfer Circuits

The drawing shows a three-core-per-bit shifting circuit employing bistable magnetic multipath cores and single turn drive and connecting wires. The arrows in the flux chart below indicate the direction of flux in the legs of the cores directly above following each drive pulse. The drive pulses are applied in the order shown by the pulse symbols superimposed on the drive lines.

Assume that prior operation of the circuit has transferred information from core C1 to core A2 and that a new drive cycle is commenced. The top line of the flux chart illustrates the initial conditions of the several cores under these circumstances.

The A drive pulse of the new cycle performs two simultaneous functions. The first function is to switch legs 2 and 4 of core C1 to return that element to its reset state. The reversal of flux in leg 4 of core C1 transmits a signal through coupling loop d to reverse the flux in legs 1 and 2 of core A2. No back transfer occurs to the left of core C1 since its input leg 1 was already in the reset state. The second function of the A pulse is to reverse the flux in legs 3 and 4 of core A2. The reversal of flux in leg 4 transmits a signal through coupling loop e to switch legs 1 and 3 of core B2.

The information originally stored in core A2 is thus transferred to core B2.

The following B drive pulse resets core A2 and transfers the information stored in core B2 through coupling loop f to core C2 in the same manner as that d...