JPS6032193A - Swapping gate circuit - Google Patents

Abstract

PURPOSE:To prevent a malfunction and to improve the start-stop characteristics by forming a bar-shaped part which is connected to a minor loop of a transfer pattern. CONSTITUTION:A swapping gate pattern 11 having a narrow end part 11a including a bar-shaped bubble transfer part of a small area and a wide end part 11b of a large area in the side of a bar pattern 5, is arranged at a connection section A to a minor loop 7 at a bubble output side foot part 2a of a 270 deg. corver pattern. In such a way, a swapping gate pattern 11 is obtained. Therefore the part A of the pattern 11 has the part 11a of a small area to increase the anisotropy of shape. Thus a large attracting magnetic pole is produced at the part 11a.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to improving the operating characteristics of a swap gate N-way, particularly a swap gate circuit that exchanges old information in a minor loop with new information on a major 2-in. It is.

[Background of the invention]

In the conventional swap gate circuit, the transfer pattern (hereinafter referred to as the connection pattern) for transferring the magnetic bubble from the major line to the minor loop is an asymmetric chevron pattern or a similar pattern, and the connection part with the minor loop part is a 906 corner part. was forming. FIG. 1 shows an example. In the figure, the swap gate circuit has major line transfer patterns la, lb, and 270
It is composed of a corner pattern 2, a connection pattern 3, a conductor pattern 4, and a bar pattern 5.

The patterns la and lb are arranged at regular intervals to form a major line 6, the 270° corner pattern 2 forms a part of the minor loop 7, and the connection pattern 3 is connected to the minor loop 7 at part A and forms a 90° corner pattern. It forms part of the The conductor pattern 4 transfers the new bubble information on the shifter line 6 to the minor loop 7 by flowing a swap current, and also transfers the old bubble information on the minor rough to the major line 6 to perform a swap operation to replace the magnetic bubbles. 8 is a rotation. A rotating magnetic field is applied in the direction of the arrow. 9 is the stop direction when starting and stopping the magnetic bubble.

In the swap gate circuit configured in this way, when the magnetic bubble is stopped, a minor lube of 7
The magnetic bubble transferred to part A is attracted to the attractive magnetic pole generated on leg 3a of connection pattern 3 by the holding magnetic field applied in stop direction 9, and is stopped at leg s3a. . When a start operation is performed next, the bubbles stopped at the leg portions 3a are transferred to the pattern 10 as the rotating magnetic field rotates, and a normal start/stop operation is performed.

However, in such an operation, the suction ai, etc. that occurs when stopping occurs not only at the leg of the connection pattern 3 but also at the magnetic bubble exit side leg 2a and curved section 2b of the 270' corner pattern 2 at the same time. . For this reason, a malfunction occurs in which the magnetic bubble, which should originally be located at the leg 3a of the connection pattern 3, stops at the leg 2a and the curved section 2b of the 270° corner pattern 2. An error occurred in which the magnetic bubble was transferred to the transfer side leg 2C of No. 2, and the magnetic bubble shifted by 1 bit. Such an error during start-stop is a major problem that impairs the non-volatility and reliability of the magnetic bubble memory element. It became.

[Purpose of the invention]

Therefore, it is an object of the present invention to provide a swap gate circuit with excellent start-stop characteristics that does not cause any of the malfunctions that occur in conventional swap gates.

[Summary of the invention]

In order to achieve such an object, the present invention provides a swap gate circuit in which a pattern forming a part of a minor loop has a 2708 corner, and a magnetic bubble is connected to a minor loop of a transfer pattern forming a transfer path for transferring a magnetic bubble from a major loop to a minor loop. The connecting part is shaped like a rod.

[Embodiments of the invention]

FIG. 2 is an enlarged plan view of a part corresponding to FIG. 1 showing an example of the swap gate circuit according to the present invention, and the same parts as in FIG. 1 are designated by the same reference numerals. In the figure, the magnetic bubble transfer portion has a narrow end portion 11a in the form of a bar with a small area at the connection portion A of the magnetic bubble transfer side leg portion 2a of the 270” corner pattern 2 to the minor loop 7, and the bar pattern A swap gate pattern 11 having a wide end portion 11b with a large area is disposed on the 5 side.

According to such a configuration, the swap gate pattern 11
Since the connection part A to the minor loop 7 of has a narrow end part 11a made of a rod shape with a small area, the shape anisotropy is large, and the narrow end 1tta of the is compared to the conventional one shown in FIG. Therefore, an attractive magnetic pole approximately twice as large is generated. Therefore, during the stopping operation of the magnetic baffle, the magnetic bubble stably stops at this narrow end 11a.
Malfunctions such as stopping at the leg portion 2a and the bay portion 2b of the corner pattern 2 will no longer occur.

〔Effect of the invention〕

As explained above, the swap gate circuit according to the present invention has an excellent effect in that extremely superior start-stop characteristics can be obtained compared to the conventional one.

[Brief explanation of the drawing]

Fig. 1 is an enlarged plan view of a part showing an example of a conventional swap gate circuit, and Fig. 2 shows a swap gate (b) according to the present invention.
FIG. 3 is an enlarged plan view of a mounting section showing an example of a passage. 2...-270' corner pattern, 2a... Magnetic bubble transfer side leg portion, 2b... Curved portion, 2C... Magnetic bubble transfer side leg portion, 4... Conductor pattern,
5-track bar pattern, 6-track major line, 7-track minor loop, IO...pattern, ll-...swap gate pattern, 11a...narrow end, 1lb-...wide end. Hee 71

Claims (1)

[Claims] In a swap gate circuit that connects a minor loop and a major line pattern having a 270° corner pattern via a conductor pattern and exchanges magnetic bubbles between the minor loop and the major line, the magnetic bubble is transferred from the major line to the minor loop. A swap gate circuit characterized by the part that connects to the minor loop of the transfer pattern having a bar shape.