JPS5891582A - Magnetic bubble transfer pattern - Google Patents

Abstract

PURPOSE:To execute transfer at a high speed, by constituting an electric conductor layer of at least one layer on a magnetic piece for holding a magnetic bubble, of the first band-like electric conductor pattern having a holed or notched pattern, and a snakemotion pattern whose width is narrower than the band- like electric conductor. CONSTITUTION:On a magnetic bubble holding magnetic piece 1, the first electric conductor layer having the first electric conductor pattern 2, and the second electric conductor layer which is insulated from said layer and has the second electric conductor pattern 3 are provided. The first electric condutor pattern 2 consists of a band-like electric conductor part 20 having holes or notches 21, 21', and a snake-motion electric conductor part 22 whose width is narrower than said part, and each of them is connected by an electric connecting part 23. The second electric conductor pattern 3 has also the same constitution. When width of the electric conductor pattern is narrowed in its snake-motion part, both magnetic field intensity and current intensity become large, therefore, the magnetic bubble is stretched easily, and transfer and detection can be executed at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a current driven magnetic bubble transfer pattern. More specifically, it relates to the Tane-ryu-kun WJ-type double-air bubble transporting slam, which can stretch a magnetic bubble almost perpendicular to its direction of travel.

In general, in a field access type magnetic bubble device that transfers magnetic bubbles using an in-plane rotating magnetic field, the data readout speed at which both bubble sections are read out as information is determined by the frequency of the in-plane rotating magnetic field, and ranges from 10 to 300 bits/sec. I don't like it. This type of data reading is not suitable for processing large dt information.

To transfer magnetic bubbles at high speed, it is possible to use the current drive system. The current driving method of the magnetic bubble is a single serpentine conductor button and a bias river permaloid.
A single-layer conductor method using a bubble transfer path with a magnetic pattern such as 1, a perforated two-layer conductor method using a row of eight-bright battens with 21 conductors, and a meandering binomial conductor method using meandering battens. , a perforated three-conductor method using a row of perforated button holes provided in a three-layer conductor, and a rotary 1FL method in which a single-layer conductor perforation pattern is provided and a rotating storm tIL is applied to it to transfer bubbles. The law is well known.

In order to read magnetic bubbles at high speed, a high-speed detection method for magnetic bubbles is required in addition to the above-mentioned high-speed transfer method using both party baffles. In recent years, it has become common to create magnetic bubbles using the magnetoresistive effect of permalloy thin films. In order to efficiently construct magnetic bubbles due to the magnetic anti-resistance effect, it is necessary to
, and extending the air bubble to the same length as its permalloy stripe is often done.

Since the domain wall mobility of a magnetic bubble is finite, a certain amount of time is required to extend the baffle to a predetermined length at once. Therefore, it is impossible to rapidly stretch both paper bubbles during high-speed transfer of magnetic bubbles, and efficient detection becomes impossible. Therefore, especially when performing high-speed detection, a magnetic bubble stretcher is required to gradually stretch the bubble.

In the field access type air bubble device, a bubble stretcher is realized by gradually stacking chevron type permalloy batons. However, this is not suitable for high-speed transfer and high-speed detection of the air baffle as described above. In the current-driven two-party bubble element, the % air bubble stretsnayat L, T: Ha, Hohek (A, H
, Bobeck) 1979 Bell System Technical Journal Vol. 58 No. 1453
On page 1,540 of this paper, it is announced that the method is connected to a two-layer conductor magnetic bubble transfer pattern, and no other driving methods are known. Moreover, the 1-air bubble stream shown in the above-mentioned literature has the disadvantage that it requires a larger driving WW flow than the bubble m*iii: flow in a normal bubble transfer path.

The object of the present invention is to provide a magnetic bubble stretcher transfer path 'F which does not require a large drive current, which is passed through a perforated two-layer conductor magnetic bubble drive system. Another object of the present invention is to provide an FFL air bubble stretcher turning maze which can also be applied to other electric current driving methods.

The structure of the present invention is as follows. - A piece of granite material that holds and bends the air bubble, and an I that is placed on the piece. This magnetic bubble transfer button is formed on an iJ recording layer, is formed of a conductor having a width narrower than the width of the band-shaped conductor, and is constituted by a meandering button electrically connected to the band-shaped conductor.

Next, non-invention will be explained using one aspect. FIG. 1 is a diagram showing a first embodiment of the invention. On the bubble field holding thin strip 1, an 8A1 conductor button 2 formed on the first conductor layer and a second conductor button 2 formed on the second conductor layer magnetically insulated from the first conductor layer are placed. Two conductor patterns 3 are provided. The first 4th button 2 includes a band-shaped conductor portion 20 having an open button or a notched button 21, 21', and a meandering body portion 2.
There are 444 pieces of 2 pieces each, each of which is connected at a single connection part 23. The conductor batten width of the meandering body portion 22 is smaller than the width of the strip-shaped conductor portion 20. Similarly, the second conductor pattern 3 also includes a band-shaped conductor portion 30 having a perforated button or a cut-out button 31, 3'
- Captured in 32 cities, each with magnetic "9
11. ing. The conductor batten width of the meandering conductor portion 3'2 is also narrower than that of the normal four-body portion 30. The meandering isobody parts 22 and 32 are installed with their angles shifted by approximately 90 degrees. Moreover, the amplitude of the meandering is also steadily increasing.

Width vvO of strip patterns 20 and 30 and meandering conductor portion 22
When the ratio of +g Wl of ゜32 is set to R=vVo/Wt, the current density in the meandering a-body part is eight times the average current in the sm-shaped 4f4-button part. Therefore, the magnetic field strength required for driving the magnetic bubble is approximately eight times that of the band-shaped conductor/f tongue portion in the meandering button portion. This means that the bias magnetic field component for holding the magnetic bubbles is also larger than that of the normal transfer button portion, and therefore the magnetic bubbles are more likely to expand.

- Literature published by Bobek et al.
For example, the Arashiryu oath required to stretch the ffl ki bubble is
It is about 2 to 3 times more. Therefore, in the present invention, the batan kamo ratio R
If you set it to 2 or 3 or more, it will look like a costume.

In a non-example, the conductor buttons 2 and 3 have father W cage flows i1. When I2 is applied, the magnetic bubbles 41 and 42, which were transferring 30 parts of the band-shaped bang 20, become
At meandering batons 22 and 32, 43
．． It is transferred in an elongated form like 44.

As in the non-example, if the amplitude of the serpentine bang section is constantly increased until it reaches a predetermined amplitude, the four-body resistance will be better than using a serpentine bang with a predetermined amplitude from the beginning. The value can be made small and the M value is 0.Next, the uninvented second real IM field is shown in FIG. It is provided on the thin piece l. The conductor r-2 has a notch, and a band 11 with an eight-pull button 21, a four-body pattern 20, and a serpentine conductor button 22 whose amplitude gradually increases are provided via a '#4L air connection 23. It is being Not implemented -1 for j
A magnetic firing system 50, such as permalloy, is provided to create a biasing effect to ensure that the - air bubble is set at 1 J for magnetic bubble rolling in the - conductor. When a pulse-like pulse is applied to the conductor button, the extended baffle, which was at position 40 when the pulse of a certain polarity was applied, is attracted by the low energy and comes to position 41 when the electric conductor is disconnected. This ambidextrous point also plays the role of securing the bubble that extends during mastication into a fine ball. The conductor width ratio is the same as in the first embodiment.

The third embodiment of Kimi Shishi will be explained with reference to FIG. Mutual f
<- Three recorded conductor layers 2, 3.6 are provided on the printed circuit board 1. 4 salary 1 tl 2* 3+ 6 has a large introductory button 21, a firefly-shaped conductor 20 with a 31.61
, 30, 60 are provided via meandering conductors 22, 32.62 and electrical connection portions 23, 33.63.

Meandering conductors (which are superimposed on each other with a spatial phase shift of approximately 120°).The conductor batten width ratio R is the same as in the first embodiment.Such conductor battens 20, 3
0, 601, respectively, with a time t1 phase shift of 120'. % by applying I3
It is easy to see from the first example that if there is a qi bubble in the rainbow-filled city, it will be transferred as it expands.

As described above, if the present invention is used, the conventional current drive wJ
4.What is the best use of a magnetic bubble stretcher?1.
This is easily realized for the cases of 14 conductors, a two-layer conductor, and a three-t*i conductor body. In the example of the sentence and non-invention, #ii has been explained as a stretcher for enlarging the bubble, but the "non-explosion" is a stretcher that gradually shrinks the bubble that has been stretched once and makes it into one tight peak. Needless to say, the transfer slam that occurs on the bubble transfer path will also be immediately available.

[Brief explanation of the drawing]

Figures 1, 2 and 3 show uninvented porridge 1° and 2nd. and a third example. 1 is a flexible thin piece for holding the pull, 2 and 3.6i are respectively 1st. @2 and 3rd 4 bodies-
120, 30, 60f, four firefly-shaped conductor buttons provided at 1-2° 3.6, 21, 21, 31° 31', 6
1 is a bubble drive opening or notch button 22, 32°6- provided on the Teishoji bar button 20, 30, 60.
2 (Meandering conductor installed in 4 chambers + @2, 3.6) to turn the button,
23 , 33 , 63 + Ingenuity 21 This is a part that connects 22, 31 and 32, and 61 and 62. 40.41,42,43,441;! It is a magnetic element for afi bubble and 1 left pull in the anti-military position, 5 old peak A bubble in the stable position. ? , Figure 1-1 Figure 2

Claims (1)

[Claims] l) A thin piece of material capable of holding a magnetic bubble, at least one conductor layer provided on the thin piece, and a hole-like pattern or cutout pattern formed in the conductor. a meandering conductor pattern formed on the conductor layer, narrower than the loop of the impermeable body pattern, and electrically connected to the fm period band-shaped conductor batten; Featuring a magnetic bubble transfer bang. 2) The magnetic bubble pattern according to claim 1, wherein the amplitude of the meandering pattern gradually increases or decreases. 3) It is characterized by having two conductor layers that are electrically insulated from each other and a meandering conductor pattern formed on each conductor layer that is aligned with the spatial phase shifted by approximately 90 to 270 degrees. A magnetic baffle transfer button according to claim 1. 4) A steel having a meandering conductor pattern in which three conductor layers electrically insulated from each other and a valley-groove body layer are overlaid with spatial phases shifted by ±120°. A magnetic bubble transfer button according to claim 1, characterized in that: