JPS633393B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the construction of magnetic bubble memory chips.

FIG. 1 shows an example of the configuration of a conventional mager-Ya-miner type magnetic bubble memory chip. In the figure, m is a minor loop group that stores information, ML is an input/output transfer path that transfers input/output information, D is a bubble detector that converts the presence or absence of magnetic bubbles into an electrical signal, G is a magnetic bubble generator that writes information, S/R is a gate array that connects the minor loop group m and the input/output transfer path ML and performs a swap operation to exchange information between them and a replicate operation to copy information in the minor loop to the input/output transfer path ML, and GR is the gate array described above. The guardrail that surrounds the outer periphery of each part to prevent magnetic bubbles from entering from the outside, and the BP are bonding pads used for connection with the outside.

The relationship between the pattern periods of the input/output transfer path ML and the minor loop m in a magnetic bubble memory chip having such a configuration has conventionally been as illustrated in FIG. 2. In the same figure, E is the input/output transfer path ML
, and each minor loop m is a simple closed loop. When the period between each minor loop is λ _n and the period of the input/output transfer element E is λ _M ,
In Figure 2, λ _n =2λ _M. In other words, the conventional input/output transfer element E was two for one minor loop m.

On the other hand, there has been a conventional idea to improve the operating characteristics by doubling the period of the transfer element E of the input/output transfer path ML. This system will be referred to as a double period input/output transfer path.

3 and 4 show conventional examples of double period input/output transfer paths. The example shown in FIG. 3 is the input/output transfer element E
The period λ′ _M of is made equal to the inter-minor loop period λ _n to double the period. In the example shown in FIG. 4, the inter-minor loop period λ' _n is doubled by doubling each minor loop m, and the period λ' _M of the input/output transfer element E is also doubled. Third
In the case of the figure, since one input/output transfer element E corresponds to each minor loop, magnetic bubble strings are continuous at each bit on the input/output transfer path ML during input/output operation. When the bubble rows are arranged consecutively in this way, there is a problem that the bubble read operation or write operation is strongly influenced by the bubbles before and after the bubbles. In the case of Fig. 4, as in the case of Fig. 2, two input/output transfer elements E correspond to each minor loop, so the magnetic bubble arrays on the input/output transfer path ML are arranged at 2-bit intervals. Although there is no problem as in the case of FIG. 3, there is a problem that each minor loop becomes complicated or the length of each minor loop doubles.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic bubble memory chip that eliminates the problems of the conventional double-period input/output transfer path method.

In order to achieve the above object, in the present invention,
A minor loop group consisting of a large number of simple closed loops and an input/output transfer path with a double period are provided at both ends of this minor loop group, each of the odd-numbered minor loops is connected to one end of the input-output transfer path, and the even-numbered minor loops are connected to the input/output transfer path at one end. Each is connected to the input/output transfer path at the other end.

The present invention will be explained in more detail below with reference to the drawings. FIG. 5 shows the configuration of a magnetic bubble memory chip with a mager-minor type double period input/output transfer path in which the present invention is implemented. In the figure, the same reference numerals as in FIG. 1 indicate the same components as in FIG. 1. The structural feature is that each minor loop is divided into two groups, an odd-numbered minor loop group m and an even-numbered minor loop group m', and the input/output transfer paths, generators, detectors, gate arrays, etc. are arranged alternately between the two groups. They are provided independently for each group above and below the minor loops of both groups, which are lined up horizontally. The odd-numbered minor loops m are coupled to the input/output transfer path ML via the upper gate row S/R, and the generator G and detector D input and output information. Even numbered minor loop
m' is coupled to the input/output transfer path ML' via the lower gate array S'/R', and input/output of information is performed by the generator G' and detector D'. FIG. 6 shows the relationship between the pattern periods of the minor loops m, m' and the input/output transfer paths ML, ML' in the configuration shown in FIG. Each minor loop m, m' is a simple closed loop. The period λ' _n between the odd-numbered minor loops m and the period λ' _n between the even-numbered minor loops m' are twice the interval λ _n of each minor loop. Therefore, the period λ′ _M of the elements E and E′ of the input/output transfer paths ML and ML′ is λ′ _n
=2λ′ _M =2λ _n . That is, each element E' of the input/output transfer path ML that connects to the odd-numbered minor loop group m, and each element E' of the input/output transfer path ML' that connects to the even-numbered minor loop group m' are each doubled in period. For each minor loop belonging to both minor loop groups, input and output transfer path elements E,
E' is in the proportion of two each.

As explained above, according to the present invention, bubble rows are lined up at 2-bit intervals on the double-period input/output transfer path, resulting in good operating characteristics, and each minor loop is a magnetic bubble consisting of a simple closed loop with a simple shape. Obtains a memory chip.

[Brief explanation of the drawing]

Figure 1 is an example of the configuration of a conventional magnetic bubble memory chip, Figure 2 is a diagram showing the pattern period of the conventional minor loop and input/output transfer path, and Figures 3 and 4 are the conventional double-cycle input/output transfer path method. FIG. 5 is a diagram showing one embodiment of the present invention, and FIG. 6 is a diagram showing the relationship between the minor loop and the input/output transfer path according to the present invention. m, m'...minor loop, ML, ML'...input/output transfer path, E, E'...input/output transfer element, λ _M , λ' _M
... Period of input/output transfer element, λ _n , λ′ _n ... Minor loop interval.

Claims (1)

[Claims] 1. A plurality of minor loops m, m' and a first input/output transfer path arranged at one end of the minor loops.
ML, a second input/output transfer path ML' arranged at the other end of the minor loop, and controlling the transfer of magnetic bubbles between the odd-numbered minor loop m and the first input/output transfer path ML. First gate S/R
and a second gate S/R' for controlling the transfer of magnetic bubbles between the even-numbered minor loop m' and the second input/output transfer path ML', The transfer element E in the input/output transfer path of
A magnetic bubble memory chip characterized in that the arrangement period λM, λM' of E' is equal to the arrangement period λm of the plurality of adjacent minor loops m, m'.