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:
May. 27, 1986
Filed:
Jun. 19, 1984
Jean M Fedeli, St. Egreve, FR;
Hubert Jouve, Biviers, FR;
Joel Magnin, St. Martin D'Heres, FR;
Christian Pisella, Rives/Fure, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
A magnetic bubble memory is formed of a series of longitudinally oriented minor registers and at least one transversely oriented major access register, all of these registers having patterns with boundaries defined by ionically implanted zones of a magnetic garnet layer. The memory is formed also with a structure for transferring bubbles from one end of the minor register to the major register, and is further configured with layered material having a predetermined format for displacing the bubbles in each minor register upon application of a rotating magnetic field. The physical structure of the memory also permits a displacement of the bubbles of the major register by the circulation of currents in two electrically conductive sheets which are superimposed on the magnetic garnet layer. The sheets have windows facing the patterns of the register, with the windows being arranged with end portions thereof in registration with the pattern boundaries to enable the bubbles to circulate while remaining in contact with the boundaries of the major register pattern in implanted zones of the garnet.