Magnetic bubble memory detection method and device

Details Magnetic bubble memory detection method and device Magnetic bubble memory detection method and device

1981-09-18

1984-04-24

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Detectors

365 36, G11C 1908

Patent

active

044452004

ABSTRACT:
A current stretch detection method for a bubble device in which bubbles are written at least one bit apart. A stretch pulse is applied to a stretch conductor so that when a bubble is detected, it is maintained stretched, even though the bubble following it has moved one bit. Preferably the stretch pulse is of a convex-shape. A bubble device has a hairpin stretch conductor and a detecting element disposed centrally in the conductor. The terminal of the detecting element on the higher potential side is arranged so that it does not cross the stretch conductor. The contiguous propagation pattern is provided with a notch at a position in which the stretch conductor is located.

REFERENCES:
patent: 3820089 (1974-06-01), Lama
IEEE Transactions on Magnetics--vol. Mag-15, No. 6, Nov. 1979, pp. 1905-1910.
Bell Systems Technical Journal--vol. 59, No. 2, Feb. 1980, pp. 229-257.
Elektronik, vol. 26, No. 10, Oct. 1977, pp. 103-106, Munich (DE); H. Huse, "Magnetblasenspeicher fur Mikroprozessor-Systeme", p. 103, right-hand column, lines 1-24; FIG. 1.
European Search Report of 2-5-83 by Examiner Degraeve at The Hague.

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