초록 ▼

Operating margins for major-minor magnetic bubble memories are improved by use of protective rails between minor loops to prevent loss of information due to stripout. The rails, as are the propagation paths, are defined by unimplanted regions in an otherwise ion-implanted layer. In another embodimen

Operating margins for major-minor magnetic bubble memories are improved by use of protective rails between minor loops to prevent loss of information due to stripout. The rails, as are the propagation paths, are defined by unimplanted regions in an otherwise ion-implanted layer. In another embodiment, unimplanted rectangular islands are used rather than rails.

대표청구항 ▼

A magnetic bubble memory comprising a layer of material in which magnetic bubbles can be moved, a pattern of unimplanted regions in an otherwise ion-implanted area in said layer defining at least first and second propagation paths thereabout along which bubbles can be moved in response to a field re

A magnetic bubble memory comprising a layer of material in which magnetic bubbles can be moved, a pattern of unimplanted regions in an otherwise ion-implanted area in said layer defining at least first and second propagation paths thereabout along which bubbles can be moved in response to a field reorienting cyclically in the plane of said layer, said memory being characterized by means comprising a protective rail between said propagation paths for preventing loss of information due to stripout therebetween.