JPS6115517B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is formed separately from a main unit using magnetic bubble memory, and attached to the main unit,
The present invention relates to a holder device into which a cassette-shaped magnetic bubble memory device can be removably inserted.

Magnetic bubble devices that use magnetic bubble memory to store information, perform logical operations, etc. have various features such as non-volatility, high storage density, low power consumption, small size and light weight, and also have mechanical elements. Since it is a solid-state device that does not contain any substances, it has extremely high reliability, and therefore has high expectations for its future use in terminal device memories and the like. Particularly when a magnetic bubble 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 a cassette-shaped magnetic bubble memory device, in which the magnetic bubble memory is separated from the main device comprising its drive circuit, reading circuit, etc., is attached to and removed from the main device. 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. It 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 device, and 2 indicates a main unit. Reference numeral 3 denotes a bubble chip, which is equipped with various functional parts such as a magnetic bubble generator G, a divider SP, a detector S, and an eraser A, but it is the same even if it has a major/minor loop 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 the connector 4 on the cassette 1 side; 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
9 is a bubble reading circuit, 9 is a magnetic bubble control circuit, which includes a bubble writing circuit that applies current to the magnetic bubble generator G to generate bubbles, a circuit that applies current to the divider SP to divide the bubbles, and a circuit that applies electricity to the detector S. The circuit includes a circuit for detecting the presence or absence of bubbles, and a circuit for energizing the eraser A to erase unnecessary bubbles. Reference numeral 10 denotes a control circuit for controlling the coil drive circuit 7, bubble reading circuit 8, and magnetic bubble control section 9 based on command signals from the central processing unit. Further, 11 is a register, and 12 is a current circuit. With this configuration, a portable cassette-shaped magnetic bubble memory device of relatively small capacity can be connected to the main unit via a connector and operated as required.

FIGS. 2 and 3 are an external perspective view and an exploded perspective view of this cassette-shaped magnetic bubble memory device. To explain this, numerals 21 and 22 are box-shaped molded upper and lower cases, 23
24 is a slide plate which is a write-inhibiting member, 25 is a magnetic bubble memory, 26 is a printed board, and 27 is a connector. and upper case 2
1 has a recess 23 at the insertion end of its outer surface, and a slide plate 24 is slidably attached within the recess 23. Furthermore, by integrating the upper case 21 and the lower case 22, an opening 28 for exposing the connector 27 on the insertion end surface, and guide grooves 2 with different groove widths on both sides to prevent incorrect insertion are provided.
9. A non-slip groove 30 is formed at the rear end to facilitate attachment and detachment. Also magnetic bubble memory 2
5 contains a bubble chip (not shown), a rotating magnetic field generation coil for moving the bubbles in the bubble chip, a bias magnetic field generation magnet for stably holding the bubbles in the bubble chip, and information on the bubbles from the disturbance magnetic field. It is formed to include at least a shield case for protection.

A magnetic bubble memory 25 and a connector 27 are mounted on the printed board 26 and housed in a space formed by the upper case 21 and the lower case 22.

In various devices using such cassette-shaped magnetic bubble memories, it is convenient and economical to design a holder that can be commonly attached, rather than designing a unique cassette holder for each device. Therefore, a holder device is required that has functions such as preventing erroneous insertion, detecting whether writing is possible, and displaying the information. The present invention was devised based on this requirement.

Therefore, in the present invention, a holder device for inserting a cassette-shaped magnetic bubble memory device formed by accommodating a magnetic bubble memory consisting of a magnetic bubble memory chip, a rotating magnetic field generating coil, and a bias magnetic field generating magnet in a case is provided. , comprises a box-shaped holder body 31 with an open rear part, and a printed circuit board 33 attached to the rear part of the holder body 31, and at least a cassette-shaped magnetic bubble memory device is inserted into the front side of the holder body 31. The holder main body 31 is provided with an insertion slot 35, a means 43 for displaying the writability status of the cassette-shaped magnetic bubble memory device, and a means 44 for displaying the operating state. a connector 40 for making a physical connection; and an escape prevention means 4 that engages with the cassette-shaped magnetic bubble memory device to prevent its escape.
1, and a switch 42 for detecting the write enable/disable state of a write prohibition setting member provided on the case of the cassette-shaped magnetic bubble memory device, and the printed circuit board 33 includes a drive circuit 46 for the cassette-shaped magnetic bubble memory device. This device is characterized by being equipped with a bubble detection circuit 47.

Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings.

The holder device of the embodiment is shown in a top view in FIG. 4, a front view in FIG. 5, and sectional views in FIGS. 6 and 7. To explain this embodiment with reference to the drawings, numeral 31 is a holder body molded of resin separately from the main body of the device, 32 is a back cover formed of an insulating material, a metal plate, etc., and 33 is a printed circuit board. The holder body 31 has a mounting hole 34 to the device body, an insertion slot 35 for inserting and holding a cassette-shaped magnetic bubble memory device, a display window 36 for displaying write-protected or write-enabled, and a display window for displaying operation status. 37
Guide rails 38 and 39 of different widths are provided on the left and right walls of the insertion slot 35, respectively.
is provided prominently. The back cover 32 includes a connector 40 for electrically connecting the cassette-shaped magnetic bubble memory device, an escape prevention means 41 such as a spring, a switch 42 for detecting whether writing is possible, and a display means such as an LED for indicating whether writing is possible. 43 and a display means 44 such as an LED for displaying an indication during operation are attached and fixed to the holder main body by means such as thermal caulking. Further, a drive circuit 46 for driving the cassette-shaped magnetic bubble memory device, a bubble detection circuit 47, etc. are mounted on the printed circuit board 33, and are fixed by thermal caulking with pins 45 formed on the holder body.

This embodiment thus configured is used in the following manner. As shown in FIG. 8, the holder device 48 of this embodiment has its mounting hole 34 connected to the main body device 49.
and is covered by a decorative board 50. The connector 40, LEDs as display means 43, 44, drive circuit 46, detection circuit 47, etc. are electrically connected to the main unit.

FIG. 9 is a sectional view showing a state in which a cassette-shaped magnetic bubble memory device 51 is inserted into the holder device 48 of this embodiment. Insertion of the cassette-shaped magnetic bubble memory device is guided by guide rails 38 and 39 of the holder device, but the width of the guide rails differs depending on the left and right sides, and the groove formed in the case of the cassette-shaped magnetic bubble memory device Since the width also differs between the left and right sides, insertion is possible only when the wide groove matches the wide guide rail, preventing incorrect insertion. This prevents bubble information from being destroyed due to incorrect insertion. Furthermore, the guide rails 38 and 39 are designed to provide a gap between the inner wall of the insertion slot 35 and the outer surface of the cassette-shaped magnetic bubble memory device 51, thereby preventing scratches on the case surface of the cassette-shaped magnetic bubble memory device 51. The connector 40 attached to the back cover 32 and the connector of the cassette-shaped magnetic bubble memory device are smoothly connected to each other.

A spring for the escape prevention means 41 attached to the back cover 32 engages with a recess 52 formed in the cassette-shaped magnetic bubble memory device 51 to prevent its escape. Further, the switch 42 attached to the back cover 32 by a metal fitting 42a is moved by the lever 42b to a write-inhibiting slide plate 24 which is slidably provided in the recess 23 of the cassette-shaped magnetic bubble memory device 51.
The position of the holder is detected, and the LED of the display means 43 is turned on or off to display the information from the display window 36 of the holder body. Further, the LED of the display means 44 flashes an operating indication through the display window 37 in response to a signal from the main unit when the cassette-shaped magnetic bubble memory device 51 is inserted. Also, the printed circuit board 33
The upper drive circuit 46 and bubble detection circuit 47 drive and detect bubbles, respectively. In this case, since the bubble detection signal is particularly small, the wiring should be as short as possible, and the book holder is advantageous in this respect.

As explained above, the cassette-shaped magnetic bubble memory holder device of the present invention can be economically used in various devices by being formed separately from the main body of the device that uses it. In addition, this holder device is capable of preventing erroneous insertion of the cassette-shaped magnetic bubble memory device, detecting and displaying whether or not writing is possible, and indicating operation status. This improves the reliability of the system.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an example of a magnetic bubble memory device, FIG. 2 is an external perspective view of a cassette-shaped magnetic bubble memory device, FIG. 3 is an exploded perspective view of a cassette-shaped magnetic bubble memory device, and FIGS. 7 shows a holder device for a cassette-shaped magnetic bubble memory according to an embodiment of the present invention, FIG. 4 is a top view, FIG. 5 is a front view, and FIG. 6 is a sectional view taken along the line -- in FIG. Figure 7 is a sectional view taken along the line - in Figure 5;
FIG. 8 is an explanatory diagram showing the state in which the holder device of the embodiment is assembled into the main body device, and FIG. 9 is a sectional view showing the state in which the cassette-shaped magnetic bubble memory device is inserted into the holder device of the embodiment. . 31...Holder body, 32...Back cover, 33...Printed circuit board, 34...Mounting hole, 35...Insertion port, 36,3
7... Display window, 38, 39... Guide rail, 40...
Connector, 41...Escape prevention means, 42...Writability detection switch, 43, 44...Display means, 46...Drive circuit, 47...Bubble detection circuit, 48...Holder device, 49...Device main body, 51...Cassette-shaped magnetic bubble memory device.

Claims (1)

[Scope of Claims] 1. A holder device for inserting a cassette-shaped magnetic valve memory device formed by accommodating a magnetic bubble memory consisting of a magnetic bubble memory chip, a rotating magnetic field generating coil, and a bias magnetic field generating magnet in a case. , a box-shaped holder body 31 with an open rear part, and a printed circuit board 3 attached to the rear part of the holder body 31.
3, on the front side of the holder main body 31, at least an insertion slot 35 into which a cassette-shaped magnetic bubble memory device is inserted; a means 43 for displaying the writability status of the cassette-shaped magnetic bubble memory device; and means 43 for displaying the operating status. A display means 44 is provided, and inside the holder body 31 there is provided at least a connector 40 for electrical connection with the cassette-shaped magnetic bubble memory device, and an escapement for engaging the cassette-shaped magnetic bubble memory device to prevent its escape. Prevention means 4
1, and a switch 42 for detecting the write enable/disable state of a write prohibition setting member provided on the case of the cassette-shaped magnetic bubble memory device, and the printed circuit board 33 includes a drive circuit 46 for the cassette-shaped magnetic bubble memory device. and a bubble detection circuit 47.