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. 29, 1980
Filed:
Jan. 16, 1979
Hideo Ishihara, Kamakura, JP;
Norio Seki, Tokyo, JP;
Abstract
A logical operation circuit for performing a desired logical operation by transferring at least one magnetic bubble on a plurality of magnetic bubble transfer routes paths employing chevron patterns, in which two neighboring ones of the magnetic bubble transfer routes provides with a first magnetic bubble transfer section which is formed by narrowed transfer routes or by magnetic bubble elongating means, so that a magnetic bubble transferred through one of the two magnetic bubble transfer routes is stably held across the two magnetic bubble transfer routes of the first magnetic bubble transfer section, while two magnetic bubbles transferred through the two magnetic bubble transfer routes on the two magnetic bubble transfer routes respectively. A second magnetic bubble transfer section formed by enlarging the space between the two neighboring magnetic bubble transfer routes along the transmission direction of said magnetic bubble is provided in which the magnetic bubble having passed through the first magnetic bubble transfer section is elongated in such a state as resting across both of the two magnetic bubble transfer routes, while the two magnetic bubbles are held on the enlarged two neighboring magnetic bubble transfer routes respectively. The magnetic bubble or bubbles be derived from at least one of the two magnetic bubble transfer routes or from another magnetic bubble transfer route coupled with the elongated magnetic bubble as a logical output corresponding to a desired logical operation with respect to the state of input of the magnetic bubble to the two magnetic bubble transfer routes.