公开(公告)号：CA846995A

公开(公告)日：1970-07-14

申请号：CA846995D

Applicant: IBM

Inventor： ROSIER LAURENCE L

公开(公告)号：CA1048152A

公开(公告)日：1979-02-06

申请号：CA236292

申请日：1975-09-18

Applicant: IBM

Inventor： HU HUNG L ,  REYNOLDS WILLIAM A JR ,  ROSIER LAURENCE L

IPC: G11C11/14 ,  G11C19/08 ,  H01F10/00 ,  H01F41/14

Abstract: BUBBLE LATTICE INITIALIZATION A method of providing an initial lattice containing magnetic bubble domains in a film is disclosed. The method includes a first step of providing a confinement area in a film to contain magnetic domains, a second step of applying an AC in-plane magnetic field to form a plurality of rows of substantially perfect parallel stripe domains, and a third step of cutting the stripe domains into bubbles to form a substantially perfect lattice containing bubble domains.

公开(公告)号：CA1048150A

公开(公告)日：1979-02-06

申请号：CA215070

申请日：1974-12-02

Applicant: IBM

Inventor： ROSIER LAURENCE L

IPC: G11C11/14 ,  G11C19/08

Abstract: COLUMN ACCESSING OF ELEMENTS IN CONFINED ARRAYS A technique for accessing interactive elements, such as magnetic bubble domains, which are in confined arrays where the elements are located with respect to one another in accordance with interactions therebetween. In order to improve the access time to any element within the confined array, means and method are provided for removing the elements in a direction substantially transverse to the direction of their translational movement within the confined array. In particular, this technique is useful for accessing columns of magnetic bubble domains in a lattice array of bubble domains. A bubble pump device is utilized to remove the interactive elements from the array. The bias field conditions for this pump propagation structure are the same as for the lattice. Bubble domains can be removed from the lattice and returned to their positions within the lattice.

公开(公告)号：CA1007370A

公开(公告)日：1977-03-22

申请号：CA166577

申请日：1973-03-07

Applicant: IBM

Inventor： HENDEL ROBERT J ,  JAMBA THEODORE F JR ,  KEEFE GEORGE E ,  ROSIER LAURENCE L

IPC: G11C11/14 ,  G11C19/08

Abstract: A structure for increasing the reliability of a magnetic bubble domain memory system in which the operating margins of various components within the system are enlarged so that the margins of the components will have a larger area of overlap. For components in which a lessening of the effect of the bias field Hz is desirable (splitters, generators, corner propagation elements, etc.), a thin layer of magnetically soft material (for instance, permalloy) is provided which extends over the area of the magnetic sheet in which the component function takes place. This thin layer is in addition to the overlay elements used to provide the function. In a memory system, selectively placed "thin patches" of permalloy or strips of permalloy are used in the critical component areas to improve operating margins of these components.

公开(公告)号：CA878174A

公开(公告)日：1971-08-10

申请号：CA878174D

Applicant: IBM

Inventor： ROSIER LAURENCE L