JPS62145576A - Magnetic information reader/writer - Google Patents

Abstract

PURPOSE:To set a magnetic information format on a magnetic recording medium freely, to make difficult to alter a bit of information, such as the altering in a reading or a rewriting, and to improve safety by providing a moving mechanism which moves a magnetic head for information recording or recording information reading independently in two crossing directions with each other, and arranging the magnetic heads obliquely so that the gap of the magnetic head makes a prescribed angle with a moving direction. CONSTITUTION:A head moving mechanism is constituted of the first moving mechanism 4X to move a magnetic head 2 in X axial direction, and the second moving mechanism 4Y to move the magnetic head 2 in Y axial direction, and by the forward rotation of a stepping motor 6X in the first moving mechanism 4.X, the movement of the magnetic head 2 in X axial direction is attained, and a lead shaft 9Y is also moved in one body, and thereby, the second moving mechanism 4Y is slide and moved on a slide shaft 3Y irresistibly. The operation of the second moving mechanism 4Y is performed in the same manner stated, and the magnetic head can move in both X and Y axial directions.

Description

[Detailed Description of the Invention] <Technical Field of the Invention> This invention prevents magnetic information recorded on a magnetic recording medium such as a magnetic card from being read or rewritten by conventional devices. The present invention relates to a highly safe magnetic information reading/writing device.

<Background of the Invention> Conventionally, in magnetic cards such as cash cards, orange cards (for JNR rides), telephone cards, etc., various value information and other information have been magnetically recorded on the card at approximately constant positions and in a constant direction. There is. However, in recent years, with the widespread use of devices that read and write magnetic information, it has become increasingly difficult to decipher the information format (information writing position and writing direction) recorded on magnetic cards, etc. This has the drawback that the recorded information can be easily tampered with, such as by reading or rewriting, and the card can be used fraudulently.

<Purpose of the Invention> The present invention is intended to solve the above-mentioned problems by making it possible to freely set the information format recorded on a magnetic recording medium and by devising the orientation of the magnetic head. An object of the present invention is to provide a highly secure magnetic information reading/writing device that prevents tampering such as reading and rewriting magnetic information.

<Structure and Effects of the Invention> In order to achieve the above object, the present invention provides a device for recording magnetic information on a magnetic recording medium or reading the magnetic information, which includes a magnetic head for recording information or reading recorded information; , a moving mechanism for independently moving the magnetic head in two intersecting directions, and the magnetic head is disposed obliquely so that a gap between the magnetic heads forms a predetermined angle with the moving direction. did.

According to this invention, since the magnetic head for information recording or information reading can freely move within the same plane, the magnetic information format (information recording position, recording direction, etc.) recorded on the magnetic recording medium is can be set freely.

Furthermore, since the magnetic head is arranged diagonally so that the direction of the gap forms a predetermined angle with respect to the direction of movement of the magnetic head,
It is possible to record or read magnetic information while moving the magnetic head in any direction of movement, making it difficult to tamper with the information by reading or rewriting it with conventional devices.
The invention achieves the purpose of the invention and achieves remarkable effects such as improved safety.

<Description of Embodiments> FIG. 1 shows an example of a schematic configuration of a magnetic information reading/writing device according to the present invention.

The illustrated device has a magnetic head 2 for information recording and information writing attached to the lower surface of a head holder 11, and the head holder 11 in two directions perpendicular to each other (two directions indicated by XY in the figure). and a head moving mechanism that moves the head. A magnetic card 1 having, for example, a magnetic coating film formed on its surface is placed below the magnetic disk 2, and magnetic information is recorded on the magnetic coating film by a magnetic head 2, or recorded information is recorded on the magnetic coating film. It is readable.

The head moving mechanism includes a first moving mechanism 4X for moving the magnetic head 2 in the X-axis direction, and a first moving mechanism 4X for moving the magnetic head 2 in the Y-axis direction.
and a second moving mechanism 4Y for moving in the axial direction, and the moving mechanisms 4X and 4Y respectively move the Y-axis and the Y-axis.
slide shafts 3X deployed along each direction of the axis;
3Y, guide bodies 5X and 5Y that are freely slidable on each slide shaft 3X and 3Y, and each guide body 5X.
, 5Y that can rotate in forward and reverse directions, and each stepping motor 6X, 6Yl: a lead shaft connected via a rotation transmission mechanism consisting of driving gears 7X, 7Y and driven gears 8X, 8Y. 9X, 9Y
This includes:

The lead shafts 9X, 9Y have lead screws 10X, 10Y carved on their outer peripheral surfaces, and the lead shafts 9X, 9Y are brought close to each other in the vertical direction so as to intersect at right angles, and the head holder 11 is placed in an engaging position at the intersection thereof. There is. This head holder 11 has the lead shafts 9X, 9
A screw that engages with the lead screws 10X and 10Y is cut into the hole into which the Y is inserted, so that the lead shafts 9X and 9
When Y rotates, the head holder 1
1 moves on the lead shafts 9X and 9Y.

For example, the stepping motor 6X of the first moving mechanism 4X
When the gear rotates in the forward direction, the rotation is transmitted to the lead shaft 9X by the drive gear 7X and the driven gear 8X, and the lead shaft 9X rotates in the forward direction. This forward rotation of the lead shaft 9X causes the head holder 6 to move in the forward direction, thereby achieving movement of the magnetic head 2 in the X-axis direction. In this case, as the head holder 11 moves, the lead shaft 9Y also moves together, so that the second moving mechanism 4Y slides on the slide shaft 3Y without resistance. The operation of the second moving mechanism 4Y is similar to that described above, and in this way, the magnetic head 2 can be freely moved in both the X and Y axes directions.

The magnetic head 2 is mounted obliquely on the lower surface of the head holder 11 so that the gap of the magnetic head 2 forms a predetermined angle with respect to the moving direction (X, Y axis directions). In the illustrated example of FIG. 1, the angle θ with respect to the Y-axis direction and the angle (90−θ) with respect to the X-axis direction are each 45
The magnetic head 2 is fixedly attached so that the angle of the magnetic head 2 is fixed.

In this way, the above-mentioned magnetic helad 2 causes the magnetic fields shown in FIG.
As in the format example (3), magnetic information can be written or read at any position and in any direction (vertical or horizontal) on the magnetic card 1. In this figure 2, the second
FIG. 11 (21) shows an example of a format having information recording sections 12 in three directions, and FIG. 2 (3) shows an example of a format having information recording sections 12 in two directions.

In the figure, the vertical stripes of each information storage section 12 indicate the direction of the gap of the magnetic head.

FIG. 3 shows an example of the circuit configuration of the above device example.

In the figure, CPU (Central Process
ing Unit) 13 is RAM (Rando
m Access Memory), ROM (
A computer is configured together with a memory 14 such as (read only memory), and this CPU 3
The stepping motors 6X, 6Y and the magnetic head 2 are connected to the magnetic head 2 via an interface 14. Based on the program stored in the memory 15, the CPU 13 sequentially controls various processing operations such as reading/determination of magnetic information by the magnetic head 2, recording, and forward/reverse rotation of the stepping motors 6X, 6Y.

FIG. 4 shows a control flow when writing is performed by the apparatus of the present invention. FIG. 4 will be explained below based on the format example shown in FIG. 2 (1). In addition, in Figure 2,
The symbols ■, ■, ■ and each arrow indicate the magnetic information recording section 1, respectively.
2, each position and recording direction are shown, and (0.0
) are the coordinates of the initial position (origin) of the magnetic helad 2, for example (■Xs, ■Ys) are the coordinates of the recording start position of the magnetic information recording section 12, and (■Xe, ■Ye) are the coordinates of the recording start position of the magnetic information recording section 12. The coordinates of the recording end position are shown respectively.

First, at the start, the magnetic head 2 is located at the initial position (0, 0) of the magnetic card 1.

Since writing processing is now performed using this magnetic head 2, step 1 (indicated by rSTIJ in the figure) becomes "YES", and the next step 2 determines the position and recording direction (positive direction) of the information recording section 12 (■). do. ■ Information recording section 1
2 does not move in the Y-axis direction, so step 2 is YES"
Then, proceed to step 3. In this step 3, the stepping motor 6Y is driven (forward rotation) to move the magnetic head 2, and in step 4, magnetic information is recorded in the information recording section 12 (2). And the recording end position (0,■
When reaching Y 1 , e 2 ), the stepping motor 6Y stops in step 5, and the writing of the recorded information in the information recording section 12 of ① is completed. In the next step 6, it is determined whether the writing process is completed or not. In this example, the next step (■) is recorded in the information recording section 12, so if step 6 is "NO", the process goes to the next step 2. return.

In step 2, since the information recording section 12 of (2) does not record in the Y-axis direction, the determination is "NO" and the process proceeds to step 7. This step 7 determines whether writing is in the X-axis direction (positive direction), and in this case, step 7 is “
YES'', the process proceeds to step 8, where the stepping motor 6X is driven (forward rotation), and in the subsequent step 6, the magnetic head 2 is moved to the recording end position of the information recording section 12 (■Xe,
(2) Recording magnetic information while moving the magnetic head to (Ye). Then, the magnetic head 2 moves to the recording end position of ■ (■Xe, ■Ye)
When reaching , the steering/knocking motor 6X is stopped in the next step 10, and the recording in the information recording section 12 of (2) is completed. In this example, there is also recording in the information recording unit 12 of ■, so the determination of "Writing complete?" in step 6 is "
No”, and the process returns to step 2.

In step 2S, the 1n information recording unit 12 of
! , lJ force direction (negative direction), the judgment is “
Y E S ”, the stepping motor 6Y is driven (reversely rotated) in the next step 3, and the magnetic head 2 is moved to the recording end position of the information recording section 12 (■
Magnetic information is recorded while performing transition scanning up to e, ■Ye). Then, the magnetic head 2 moves to the recording end position (■Xe,
(2) When reaching (Ye), the stepping motor 6Y stops in step 5. When the writing of the recorded information in all the information recording sections 12 - 12 is completed in this way, the final step is "YIES", the magnetic head 2 is returned to the initial position, and the series of writing operations is completed. do.

FIG. 5 shows a control flow in a read operation, and this control flow consists of the same procedure as the control flow in FIG. , and the explanation thereof will be omitted.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of the overall configuration of the device according to the present invention;
Fig. 2 is a diagram showing an example of the card face format showing the information recording state of a magnetic card applied to this device, Fig. 3 is a circuit block diagram of the device of this invention, and Fig. 4 is a writing process using this device. FIG. 5 is a flowchart of the control operation in the case of reading processing. 1...Magnetic card 2...Magnetic head 4X,
4Y・・・Movement mechanism

Claims (3)

[Claims] (1) A device for recording magnetic information on a magnetic recording medium or reading the magnetic information, including a magnetic head for recording information or for reading recorded information, and a device that independently rotates the magnetic head in two intersecting directions. and a moving mechanism for moving the magnetic head, the magnetic head being disposed obliquely such that a gap of the magnetic head forms a predetermined angle with the moving direction. (2) The magnetic information reading/writing device according to claim 1, wherein the magnetic recording medium is a magnetic card having a magnetic coating film formed on one surface thereof. (3) The magnetic information reading/writing device according to claim 1, wherein the magnetic head and the moving mechanism are controlled by a computer.