公开(公告)号：CA1109962A

公开(公告)日：1981-09-29

申请号：CA298878

申请日：1978-03-14

Applicant: IBM

Inventor： BEALL GREGORY W ,  COHEN MITCHELL S ,  KRYDER MARK H

IPC: G11C11/14 ,  G11C19/08 ,  H03K17/84

Abstract: SLM field access bubble devices which include at least one conductor crossing a bubble propagation path have severely limited operating margins (especially for small bubbles) for the bubble in the vicinity of the conductor. Apparatus and method for operating such a bubble device is disclosed which improves the device operation in this region. The improved apparatus and method provides an additional field source with a sense and magnitude to support the bubble when it reaches the conductor region. Such a field source, as disclosed, includes a current pulse in the conductor.

公开(公告)号：FR2393397A1

公开(公告)日：1978-12-29

申请号：FR7813747

申请日：1978-04-05

Applicant: IBM

Inventor： BEALL GREGORY W ,  COHEN MITCHELL S ,  KRYDER MARK H

IPC: G11C11/14 ,  G11C19/08 ,  H03K17/84

Abstract: SLM field access bubble devices which include at least one conductor crossing a bubble propagation path have severely limited operating margins (especially for small bubbles) for the bubble in the vicinity of the conductor. Apparatus and method for operating such a bubble device is disclosed which improves the device operation in this region. The improved apparatus and method provides an additional field source with a sense and magnitude to support the bubble when it reaches the conductor region. Such a field source, as disclosed, includes a current pulse in the conductor.