JPS6051191B2 - magnetic bubble memory device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic bubble memory device comprising a cassette-shaped bubble memory and a main unit equipped with a circuit for driving the cassette-shaped magnetic bubble memory, a reading circuit, and the like.

Magnetic bubble utilization devices that use magnetic bubble memory to store information, perform logical operations, etc. are nonvolatile, have high storage density,
It has various features such as low power consumption, small size and light weight, and since it is a solid element that does not contain any mechanical elements, it has extremely high reliability, and therefore it will be used as a terminal equipment memory in the future. Expectations are extremely high.

Particularly when a magnetic bubble memory is employed as a storage medium for a terminal device memory, such as a portable data recorder, the most important feature among the above-mentioned characteristics is that it is small and lightweight. Against this background, a method has recently been devised in which the magnetic bubble memory is separated from the main unit consisting of its drive circuit, reading circuit, etc. and made into a cassette, and the cassette-shaped bubble memory is attached to and removed from the main unit. With this method, information can be easily carried around, and due to the nature of magnetic bubble memory, a relatively large amount of information can be stored in a compact case, so information can be input directly to the central processing unit at the site where the data is generated. can be created, and is expected to be even more effective in improving the efficiency of administrative processing. FIG. 1 is a diagram for explaining one circuit configuration used in this type of system. In the figure, 1 indicates a cassette-shaped magnetic bubble memory, and 2 indicates the main unit. 3 is a bubble chip, which is equipped with various functional parts such as a magnetic bubble generator (G), a divider (SP), a detector (S), an eraser (A), etc., but the same applies even if it has a major/minor configuration.

The figure shows a single loop configuration. 4 is a connector, and 5 is a rotating magnetic field generating coil consisting of an X coil and a Y coil arranged so as to cover the bubble chip 3.

6 is a connector corresponding to connector 4 on the cassette 1 side, 5
7 is a coil drive circuit for supplying a sine wave current or a triangular wave current to the coil 5 to generate a rotating magnetic field along the bubble chip surface, 8 is a bubble reading circuit, and 9 is a magnetic bubble control circuit for generating magnetic bubbles. A bubble writing circuit that applies current to the device G to generate bubbles, a circuit that applies current to the divider SP to divide the bubble, a circuit that applies current to the detector S to detect the presence or absence of bubbles, and a circuit that applies electricity to the eraser A. This includes a circuit that erases unnecessary bubbles.

Reference numeral 10 denotes a controller for controlling the coil drive circuit 7, bubble reading circuit 8, and magnetic bubble control circuit 9 based on command signals from the intermediate processing device.

Further, 11 is a register, and 12 is a power supply circuit. With such a configuration, the cassette-shaped bubble memory can be connected to the main unit via the connector and operated as necessary. However, when cassettes of different capacities are inserted into the main unit of such a magnetic bubble memory device and operated, the terminal arrangement of the cassette connector has not been standardized, so the bubble memory controller or direct peripheral circuit (coil drive circuit, bubble reading circuit,
(including bubble control circuit, etc.), breakage of the conductor of the bubble memory element, damage to the drive coil,
There is a risk that information may be destroyed. Even if the terminal arrangement of all cassettes is made the same in order to eliminate this problem, the controller of the main unit does not know what capacity cassette is inserted, and writing to or reading from that cassette cannot be performed completely. It turns out. The present invention aims to solve this problem and provide a means for transmitting the capacity of the cassette to the main unit. Therefore, in the present invention, there is provided a main unit including a cassette holder, a controller for driving two magnetic bubble memory devices, and a direct peripheral circuit; In the magnetic bubble memory 3 device comprising a cassette-shaped bubble memory, the cassette surface of the cassette-shaped bubble memory has grooves in a predetermined recessed portion of the cassette as a means of indicating the capacity of the magnetic bubble memory accommodated in the cassette. The present invention is characterized in that the cassette holder of the main unit is provided with means for detecting the identification means of the cassettes 4 and 5.

Embodiments of the present invention will be described in detail below based on the accompanying drawings.

An embodiment of the present invention is shown in FIGS. 2A and 2B.

In the figure, figure a shows a cassette-shaped bubble memory 14,
Figure b shows the main device 13. In this embodiment, the capacity of the cassette-like bubble memory is indicated by the presence or absence of a depression formed at a predetermined position on the cassette. It is designed to form a depression. In the figure, grooves 20 are formed in Al and A2, but not in AO. On the other hand, the main unit has a switch A operated by the groove 20 of the cassette as shown in Figure b. -A2 is provided, one terminal of each switch is grounded, voltage is applied to the other terminal, and NOT
It is connected to the controller via circuits 21-23.
In this embodiment configured as described above, if the capacity display signal is set as ゜0゛ where the groove 20 is formed in the cassette and ``1'' when the groove 20 is not formed, the groove 20 will be displayed as shown in the table below.
The capacity can be transmitted to the controller of the main device by a combination of presence/absence of 0.

As explained above, the present invention has a configuration in which an identification means is provided to indicate the bubble memory device capacity by the presence or absence of grooves on the cassette surface of a cassette-shaped bubble memory, and the identification f stage is detected by the cassette holder of the main unit. The number of connector terminals for connecting the cassette-shaped bubble memory can be reduced,
It is possible to reduce the increase in the number of terminals due to an increase in device capacity.

Also, inserting the socket-shaped bubble memory into the cassette holder (
Its practical effects are remarkable, such as the ability to reduce force. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an example of a magnetic bubble memory device using a conventional cassette-shaped bubble memory, and FIG. 2 is an explanation illustrating the main parts of a magnetic bubble memory device according to an embodiment of the present invention. It is a diagram.

13...Device body, 14...Cassette bubble memory, 21, 22, 23...NOT
Circuit, 20...groove.

Claims (1)

[Claims] 1. A main unit including a cassette holder, a controller for driving a magnetic bubble memory device, and a direct peripheral circuit, and a cassette-shaped bubble memory in which the magnetic bubble memory device is housed in the cassette and can be freely inserted into and removed from the cassette holder of the main unit. In the magnetic bubble memory device, the cassette surface of the cassette-shaped bubble memory is provided with identification means by a combination of the presence and absence of a groove in a predetermined recessed portion of the cassette as a means for indicating the capacity of the magnetic bubble memory accommodated in the cassette. . A magnetic bubble memory device, wherein the cassette holder of the main unit is provided with means for detecting identification means for the cassette.