Magnetic bubble shift register store

Details Magnetic bubble shift register store Magnetic bubble shift register store

1978-06-20

1980-06-10

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Multiple magnetic layer

365 13, 365 14, 365 37, G11C 1908

Patent

active

042076145

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.

REFERENCES:
patent: 3636531 (1972-01-01), Copeland
patent: 3745542 (1973-07-01), Copeland
patent: 3944842 (1976-03-01), Dorleijn
IBM Technical Disclosure Bulletin-vol. 13, No. 9, Feb. 1971, 365-22, p. 2738.

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