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:
Jun. 10, 1980
Filed:
Jun. 20, 1978
Gerrit Frens, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A magnetic bubble shift register store having a plate of magnetic material whose preferred magnetization direction extends transverse to the plane of the plate and in which bubbles are situated, said plate having two separate, elongated generally parallel extending continuous bubble paths, of lower bubble energy in comparison with the vicinity; the center lines of said paths being situated at a distance from each other which is at least equal to the mean bubble diameter. The 0-bits of written information to be transported and stored are represented by bubbles in the one path, while the 1-bits thereof are represented by bubbles in the other path. The interaction between the bubbles ensures that bubbles in the two paths cannot pass each other, with the result that the information represented by the bubbles can be unambiguously transported and maintained in the path direction.