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:
Mar. 30, 1976
Filed:
Sep. 23, 1974
Toshihiko Kobayashi, Mitaka, JA;
Tetsusaburo Kamibayashi, Niza, JA;
Abstract
A word arrangement matrix memory of high bit density having a flux keeper is known in which a number of word lines provided on a flux keeper plate are mounted on the surface of a substrate on which a number of digit lines of magnetic strips each comprising a conductive strip coated with at least one ferromagnetic thin film is provided. In accordance with this invention, the digit lines comprises a plurality of straight sections disposed in parallel at regular spaces, corresponding digit lines of the respective sections being interconnected to one another in series or in parallel. The flux keeper plate has, on the surface facing the said surface of the substrate, a number of parallel column grooves facing the sections of the digit lines and a number of parallel row grooves intersecting at right angles with the column grooves. The word lines comprise a plurality of X lines and a plurality of Y lines, the X lines and the Y lines being arranged so that only a group of memory cells on one of the digit line sections facing a position of the column grooves is selected by current coincidence selection of one of the X lines and one of the Y lines.