JPS6134635Y2 - - Google Patents

Description

[Detailed explanation of the idea] (a) Technical field of invention The present invention relates to the structure of a magnetic bubble eliminator.

(b) Background of the technology A magnetic bubble memory device is made by sandwiching a wiring board with a magnetic bubble memory chip mounted in the center, placing a drive coil, a magnetic shunt plate, and a permanent magnet plate, and then attaching the printed wiring on the wiring board to a resin case. It is welded to a lead terminal that is insert-molded in-line, then a resin seal is applied, and this is then magnetically sealed using a magnetic metal such as permalloy.
It is made with a DIP type package structure.

Now, the magnetic bubble memory device has a storage capacity of 64K.
The type and number of magnetic bubble memory devices are selected according to the required storage capacity, and direct peripheral circuits such as coil drive circuits, function circuits, sense amplifiers, and timing circuits are used. , a control circuit, etc. are mounted on the same printed wiring board to produce a magnetic bubble memory card.

There is also a magnetic bubble memory cassette in which a magnetic bubble memory device is stored in a cartridge so that it can be carried and replaced. It is designed to be connected to the holder.

As described above, magnetic bubble memory devices are used in electronic devices in various forms.
The stored information needs to be rewritten as needed.

Here, information can be rewritten by, for example, reading out the information to be rewritten stored in the minor loop group using a driving magnetic field, transferring it out to the major line, guiding it to an erasing circuit, and erasing it, or guiding it to a guardrail and erasing it. However, there are cases where it is desired to erase the stored information all at once using an eraser.

The present invention relates to an eraser that erases stored information at once.

(c) Prior art and problems In order to erase information recorded in a magnetic bubble memory device, a collapse magnetic field is used in which the magnetic bubble disappears by increasing the bias magnetic field applied perpendicularly to the magnetic bubble memory chip by a permanent magnet. This can be done by bringing an electromagnet close to apply the necessary magnetic field, or by increasing the bias magnetic field by passing current through an erasing coil provided in the magnetic bubble memory device. On the other hand, in order to erase the information stored in a magnetic bubble memory cassette, there is a cassette eraser which is provided with erase terminals on the connector terminal of the cassette and the connector terminal of the cassette holder connected thereto, and is connected to the erase power source. However, until now, no single eraser has been found that is common to both magnetic bubble memory devices and cassettes.

(d) Purpose of the invention The purpose of the invention is to provide an eraser that can be used for both magnetic bubble memory devices and magnetic bubble memory cassettes.

(e) Structure of the invention The object of the invention can be achieved by providing a magnetic bubble eraser with both a power supply to the erasing coil and an electromagnet, and switching these according to the target.

(f) Example of the invention Fig. 1 is a circuit diagram of a magnetic bubble eliminator according to the invention, Fig. 2 is a perspective view of the magnetic bubble eliminator according to the invention, and Fig. 3 is a plan view and a side view of the magnetic bubble eliminator according to the invention. be.

The present invention includes an erasing power supply for erasing a magnetic bubble memory cassette and an electromagnet for erasing a magnetic bubble memory device in one eraser. In FIGS. 1 and 2, the power supply 1 is for example It consists of a 9V dry cell battery, and the DC charge is passed through power switch 2 to a 4700μF capacitor 3.
is being charged.

Next, regarding erasing the information stored in the magnetic bubble memory device 4, the lower end of the eraser has an electromagnet 5 with a solenoid wound around its magnetic core.
After turning the changeover switch 6 to the electromagnet side, pressing the erase switch 7 with the tip of the electromagnet 5 pressed against the magnetic bubble memory device 4 opens the electromagnet circuit, and the bias magnetic circuit applied thereby Then, the magnetic bubble is erased.

Next, when erasing the magnetic bubble memory cassette 8, insert the cassette 8 into the cassette holder 9 and bring the contacts of the connectors into contact with each other to erase the erase coil of the magnetic bubble memory device installed in the cassette 8. The terminal is connected to a power supply terminal 10 provided in the eraser, and the stored information is erased by pressing the erase switch 7 with the changeover switch 6 tilted toward the cassette side.

FIG. 3 is a plan view and a side view of the eraser.
It is also provided with an LED 10 that indicates the completion of charging, and a changeover switch 6 and a connection connector 11 into which a magnetic bubble memory cassette is inserted are provided on the side.

Also, a 4700μF capacitor 3 for charging and a 9V dry cell battery are built in as a power source 1, and there is an electromagnet 5 at the bottom, and a device guide 12 is located at the bottom of this, and a magnetic bubble to be erased. Attached to match the memory device.

(g) Effects of the invention The present invention provides a magnetic bubble memory device and a magnetic bubble memory cassette using the same, in which a separate eraser is used to erase stored information at once. On the other hand, in the present invention, by providing both an erasing electromagnet and a cassette erasing connector in one eraser, it has become possible to perform the erasing operation efficiently.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a magnetic bubble eliminator according to the present invention, FIG. 2 is a perspective view of the magnetic bubble eliminator according to the present invention, and FIG. 3 is a plan view and a side view thereof. In the figure, 1 is the power supply, 2 is the power switch, 3
is a capacitor, 4 is a magnetic bubble memory device,
5 is an electromagnet, 6 is a changeover switch, 7 is an erase switch, 8 is a magnetic bubble memory cassette, 9 is a cassette holder, and 10 is an LED.

Claims (1)

[Scope of utility model registration request] An electromagnet and an erasing coil supply power source are integrally provided for erasing recorded information of a magnetic bubble memory device mounted on a substrate as a file memory component or a magnetic bubble memory cassette in which the device is housed in a cartridge. A magnetic bubble eraser characterized by: