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:
Jan. 25, 1983
Filed:
Sep. 29, 1980
Toshio Futami, Mobara, JP;
Kazutoshi Yoshida, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic bubble memory device having a bubble generator which generates a magnetic bubble by conducting a pulse current on its hairpin-shaped conductor loop and a major propagation circuit for propagating the magnetic bubble to a transfer-in gate circuit which transfers the magnetic bubble to a memory storage region, wherein the device further comprises a gate means provided between the bubble generator and the major propagation circuit for transferring a magnetic bubble carrying information '1' onto the major propagation circuit at a first predetermined timing and preventing a spurious bubble to be transferred to the major propagation circuit at a second predetermined timing.