Inplane Field Waveform Control to Reduce Error Rates in Bubble Devices
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
The read error rate in bubble devices is reduced by applying the inplane field vector along the "Y" direction instead of the "X" direction only where it had been stopped. Fig. 1 illustrates the manner in which the inplane field vector has been applied in the past. When bubbles are to be moved from one position, the inplane field is raised from either point h or s along the positive "X" direction 10 to full inplane field amplitude "a." The field is then rotated through 360Œ along the line indicated by the points labeled a, b, c, d and a. Fig. 2 illustrates one embodiment of applying the inplane field vector along both the positive "Y" and positive "X" directions simultaneously so that the inplane field is raised from either point h or s to point X as shown by paths 12 and 14 respectively. Fig.