The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1985
Filed:
Jun. 29, 1983
LuVerne R Peterson, San Diego, CA (US);
Burroughs Corporation, Detroit, MI (US);
Abstract
A magnetic bubble memory includes a planar magnetic film containing a plurality of magnetic bubbles which move in response to a magnetic field that rotates the film's plane; and further includes an improved mechanism for detecting the bubbles comprised of: a pair of elongated magnetoresistive members that lie over the film alongside of one another; the members having fingers that extend towards each other along the direction of elongation; the fingers of one member being interdigitated with the fingers of the other member such that they mesh together but do not touch; the fingers being interdigitated at angles of less than 180.degree. so that magnetic poles which attract the bubbles are sequentially induced in the fingers of only one member, in the fingers of both members, and in the fingers of only the other member by each rotation of the field.