JPS6136319B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic bubble device, and more particularly to an improvement in a transfer control gate (hereinafter referred to as a replicate/transfer gate) that selectively controls the transfer of bubbles between a plurality of propagation paths. be.

BACKGROUND OF THE INVENTION Supported by the remarkable development of various electronic technologies including semiconductor integrated circuit technology, electronic computers are rapidly becoming smaller and faster. In addition, the reliability has been significantly improved by making the circuit elements solid-state, and systems that use electronic computers online are being realized one after another.

However, it is still extremely large compared to the human brain and is vulnerable to vibrations, so a fundamental technological innovation is required to mount it on a flying object such as a rocket or aircraft.

Furthermore, as the use of electronic computers progresses, the required storage capacity continues to increase, and there is a strong demand for a reduction in the unit cost of storage and a reduction in the time required to access certain information.

Most conventionally known replicate/transfer gates for magnetic bubble devices have gate patterns having a fine structure of 2d (d is the bubble diameter) or less. This is a problem that will become more prominent in the future as bubble diameters become smaller and patterns become finer, and manufacturing becomes increasingly difficult.

The present invention has been made in view of the above-mentioned problems, and its purpose is to change the conventional complicated replicate/transfer gate pattern into a gate pattern with a simple shape, thereby making it effective against microbubbles. A replicate/transfer device for magnetic bubble devices that provides a gate pattern that is easy to adapt to major/minor loop configurations, and that enables replicate/transfer operations in both directions.
Our goal is to provide transfer gates.

An object of the present invention is to provide a first valve propagation path and a second valve propagation path.
and a transfer control means for selectively controlling the transfer of bubbles between the first and second bubble propagation paths, wherein the transfer control means includes the first bubble propagation path. Consisting of a vertical conductor path spanning both the bubble propagation path and the second bubble propagation path, and a horizontal conductor path arranged between the first bubble propagation path and the second bubble propagation path and intersecting the vertical conductor path. The bubble is split or transferred between both propagation paths by controlling the phase of energization to the horizontal conductor path for bubbles extending along the vertical conductor path by energization to the vertical conductor path. This can be achieved by using a magnetic bubble device that is characterized by performing a replication/transfer function.

An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1A and 1B are a plan view and a side view showing the pattern shape of the magnetic bubble replicate/transfer gate of the present invention.

In relation to Figures A and B, it is composed of pattern 1 for bubble stretching and pattern 2 for bubble cut or bubble transfer, and the patterns 1 and 2 are arranged in the thickness direction of the bubble crystal. , each having a two-layer structure.

The pattern 1 has a function of stretching the bubble 3 so that the bubble 3 crosses the major loop 4 and the minor loop 5 at corresponding positions.

The ability to cross the bubble 3 is selected by aligning the sides of the pattern between the major 4 and the minor 5 in a direction such that the direction of the current generates a magnetic field that stretches the bubble 3. Further, the pattern 2 is arranged in a direction perpendicular to the direction in which the bubble 3 is stretched by the pattern 1, that is, in a position perpendicular to the pattern 1, and cuts the stretched bubble 3 or transfers the bubble 3 by a magnetic field gradient. It has a function.

When the bubble 3 is cut, it operates as a reflector, and when a gentle magnetic field gradient is provided, it operates as a transfer.

The selection of both of the above operations is made by the phase and amplitude of the current flowing through pattern 2, as will be described later.

The minimum line widths ( _WA , _WB ) of the conductive patterns applied in the present invention are each 2d or more. however,
Here, d is the diameter of the bubble.

6 is the stretched bubble, 7 is the inbra part,
8 is a bubble crystal.

In the above configuration, the operation of the replicator will be explained with reference to FIGS. 2A to 2C.

In Fig. 2A, when the bubble in the minor loop 5 is heliplicated in the major loop 4, when the current Ist is first applied to the pattern 1 by t=ta, the bubble 3 in the minor loop 5 reaches position 11 where it just contacts the major loop 4. However, the bubble 3 is stretched to the position 12 where it contacts the major loop 4 by the above-mentioned Ist.

In the stretched state as above
Play Ist. Next, in the case of t=tb in FIG. 2B, current Ist is kept flowing and Icut is applied to pattern 2 at t=tb to cut the stretched bubble 6.

It is better for Icut to have a narrow pulse width of about 50 nsec. Immediately stop playing Ist after the above Icut is played.

Next, in the case of t=tc in FIG. 2C, each bubble 3 divided into two has a major loop 4
and a minor loop 5 and are transferred, thereby completing the replication operation.

Next, the transfer operation will be explained with reference to FIGS. 3A, B, and C. The transfer operation is an in operation that transfers from the major loop 4 to the minor loop 5 depending on the polarity of the current Itr flowing through the pattern 2, and vice versa.
It is possible to distinguish between out movements and out movements.

The above two principles are exactly the same as the operation of the replicator. Therefore, the above-mentioned in operation will be explained step by step.

At t=ta in FIG. 3A, when the bubble position 12 of the measurer is reached, Ist begins to flow into the pattern 1, similar to the replicator operation. Bubble 3 is stretched to position 11 by Ist above.

Next, at t=tb in FIG. 3B, transfer current Ist is applied to pattern 2 while Ist remains applied to pattern 1. The direction of Ist is such that in the case of the in-motion, the major loop 4 side (direction of position 12) is the colabus magnetic field and the minor loop side 5 (position 1) is the stripe magnetic field. Itr as described above until bubble 3 moves sufficiently.
Continue to flow. And Ist stops while Is is flowing.

Next, in FIG. 3C, the transfer-in operation is completed at t=tc.

Transfer-out is realized by switching the polarity of the current Itrans flowing through pattern 2 to the opposite direction at the same timing.

As explained above, the replicate/transfer gate for magnetic bubbles according to the present invention has a two-layered conductor structure and allows current to flow through each layer separately, thereby simplifying complex replicate/transfer operations. It becomes possible to carry out using a pattern of a shape,
M/m conversion is easy, replicator/transfer operations in both directions are possible, and the effect is extremely large.

[Brief explanation of the drawing]

1A and 1B are plan views and side sectional views showing the pattern shape of the magnetic bubble replicate/transfer gate of the present invention; FIGS. 2A to 2C are partial cross-sectional views for explaining the replicator operation; FIGS. 3A to 3C are partial cross-sectional views for explaining the transfer operation. In the figure, 1 is the first pattern, 2 is the second pattern, 3 is the bubble, 4 is the major loop, 5 is the minor loop, 6 is the stretched bubble, 7 is the implant part, and 8 is the ...Bubble crystal, 11 shows the contact position between the bubble and the major loop, 12 shows the contact position between the bubble and the major loop, W _A shows the minimum line width of pattern 1, and W _B shows the minimum line width of pattern 2.

Claims (1)

[Claims] 1. A magnetic bubble device comprising a first bubble propagation path, a second bubble propagation path, and transfer control means for selectively controlling the transfer of bubbles between the first and second bubble propagation paths. In the above, the transfer control means includes a vertical conductor path spanning both the first bubble propagation path and the second bubble propagation path, and the first bubble propagation path.
and a second bubble propagation path, the horizontal conductor path intersects with the vertical conductor path, and when the vertical conductor path is energized, the bubbles extend along the vertical conductor path. A magnetic bubble device characterized in that it performs a replicate/transfer function by dividing or transferring bubbles between both propagation paths by controlling the phase of energization to the horizontal conductor path.