Method of improving the operation of a single wall domain memory system

Claim 1

In a bubble memory system including a planar layer of a magnetizable material in which single wall domains or bubbles may be sustained and moved between first and second stable positions in said layer, which stable positions are associated with an inductively coupled stripline, by a drive current signal that is coupled to said layer by said stripline, the method of preventing said bubbles from escaping from the magnetomotive effect of said drive current signal to transfer said bubbles between said first and second stable positions or from sticking in either said first or second stable position, comprising: separating said stripline a predetermined distance S from the top surface of said layer for rounding off the peaks of the normal field H Z component that is inductively coupled to said layer by the drive current signal that is coupled to said stripline; and, coupling to said stripline a drive current signal of a waveform having an initially relatively high signal amplitude that is followed by a relatively lower signal amplitude.