JPS5589977A - Magnetic bubble memory unit - Google Patents

Abstract

PURPOSE: To suppress the increase in the terminal number and to improve the temperature characteristics, by generating successive pulses at the generator and preventing the malfunction at the neighbourhood of the limit of the operation margin through the connection of control conductor patterns in series.

CONSTITUTION: Magnetic bubbles are produced successively in every bit by the generator G and they are sequentially transferred as B₁.... In this case, the control conductor patterns 2, 3 are connected in series, and the timing for flowing the driving current i is set twice per HR. Further, the location of the permalloy pattern of the transfer gate T and the generator G is different by 180°, and the partial magnetic field produced by the current i flowing when the direction of HR is 0°, is active only to the generator G, and it is active only to the gate T when 180°. Thus, the magnetic bubbles on the transfer pattern 11 is transfered to the transfer path 4 and fed to the guard rail. The current i is fed when unnecessary bubble is on the gate position, only required information bubble is transferred on the write-in information transfer path 5, and fed to the memory loop.

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