Method of operating a magnetic bubble memory with a drive...

Details Method of operating a magnetic bubble memory with a drive... Method of operating a magnetic bubble memory with a drive...

G - Physics

11

C

352/37.3

G11C 19/08 (2006.01)

Patent

CA 1222817

-17- ABSTRACT OF THE DISCLOSURE METHOD OF OPERATING A MAGNETIC BUBBLE MEMORY WITH A DRIVE FIELD THAT TEMPORARILY STOPS A method of operating a magnetic bubble memory (of the type that has a plurality of magnetic bubbles which move in a plane in response to a magnetic drive field that rotates in said plane) includes the steps of sending respective currents through a pair of field coils to produce the rotating magnetic field; generating at least one of the currents to consist of a series of positive and negative going waveforms separated by a dwell period so that the rotation of the field temporarily stops during the dwell period; and timing the dwell period to occur when the bubbles are at predetermined locations in the memory.

457717

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