JPS63222303A - Reader/writer for recording medium - Google Patents

Abstract

PURPOSE:To miniaturize a device and to improve the maintenance ability and the reliability by providing a detecting part, which reads information in a position indicating part which indicates head position information of a recording medium, and a head adjacently to each other. CONSTITUTION:A magnetic bar code sensor 29 as the detecting part which reads information related to the rotation direction of a magnetic head 27 from a magnetic bar code 1B printed on the rear side of a magnetic card 1 and the magnetic head 27 which is rotated around the axis vertical to the magnetic card 2 by a rotating motor 31 in accordance with read information related to the rotation direction of the magnetic head 27 are provided adjacently to each other. By this constitution, the processing time of carrying of the magnetic card is shortened to miniaturize the device, and the maintainability and the reliability are improved because they abut each other in a magnetic recording unit.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a recording medium reading/writing device that can prevent falsification and theft of data.

(Prior Art) FIGS. 8 and 9 show the structure of a magnetic card, which is a conventional recording medium.

The magnetic cards shown in each figure are made of resin with a number of...
It has a magnetic stripe with a magnetic tape several tens of meters wide.

Conventionally, magnetic recording on magnetic cards has been mainly performed in a direction perpendicular to the length direction of the magnetic tape, as shown in FIG. However, in such a recording method, since the direction of magnetization is determined, there is a risk that the recorded data can be easily read and falsified or stolen.

For this reason, as shown in Figure 9, there is a known structure in which recording is performed diagonally with respect to the length direction of the magnetic tape, so that the data cannot be read by a normally arranged magnetic head. .

However, in the conventional magnetic cards mentioned above, the recording direction was either perpendicular or diagonal to the length direction of the magnetic tape, so if the direction is known, the recording direction (perpendicular or diagonal) can be determined. If you point a magnetic head at the target, the data can be easily read, making it easy to steal or tamper with the data.

(Problems to be Solved by the Invention) As described above, in the above-mentioned conventional magnetic cards, the magnetic records are easily read, and there is a risk that the contents of the magnetic records may be stolen or tampered with. Therefore, a method has been considered in which recording is performed by rotating a head that performs magnetic recording on a magnetic card and arbitrarily varying the magnetization angle of the magnetically recorded content on the magnetic card.

In this method, safety is greatly improved by changing the pattern of variation in the magnetization angle for each magnetic card. However, the magnetization angle must be similarly varied when recording and reproducing magnetic information on a magnetic card6. Therefore, it is necessary to show this variation pattern of the magnetization angle on a part of the magnetic card. For this reason, magnetic card processing equipment requires
A detection unit that detects this variation pattern and a magnetic head that performs magnetic recording and reproduction are required. It became necessary to provide the detection section and the magnetic head adjacent to each other.

If the detection section and the magnetic head are provided apart from each other, the processing time for conveyance increases and the apparatus becomes larger. Furthermore, by providing the detection section and the magnetic head adjacent to each other, they are provided in the same magnetic recording unit, improving maintainability and reliability.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a read/N included recording medium that is compact and further improves maintainability and reliability! ! The purpose is to provide the equipment.

[Structure of the Invention] (Means for Solving the Problems) A head that is provided facing a recording section of a recording medium and reads and writes information to the recording section, and a head that is connected to the recording section of the recording medium. and a detecting section for detecting a position indicating section of the recording medium on which the positional information of the head indicated by the position varying means is provided, the detecting section and the head It is characterized by being provided adjacently.

(Operation) When a recording medium is inserted into the apparatus, the detection section first reads information on the position support section of the recording medium. In the position indicating section, position information such as information regarding the rotational direction of the head is recorded.

Then, in the drive 1III1 section, the head is driven to rotate in forward and reverse directions about the vertical axis based on the read information regarding the rotational direction of the head, thereby reading data stored in the recording medium and writing data to the recording medium. ing.

(Example) Figure 1 shows the configuration of an embodiment of the device according to the present invention, in which (A) is a front view showing the internal configuration, (B) is a plan view, and (C) is a front view showing the internal configuration. ) is a left side view. Moreover, FIG. 2 is a perspective view showing the structure of a magnetic card according to an embodiment of the present invention.

This magnetic card is a flexible magnetic card. In addition, this magnetic card can be used, for example, as an expressway usage card, if the user purchases this card in advance, and each time the user uses the expressway, it is placed at each entrance or exit.
After the card is inserted into a processing HH equipped with a writing device, its contents are read, new data is written in, and the correctness of the written data is checked, the card is printed on the surface as shown in FIG. 2 (A).
The date of use, the expressway exit used, and the remaining amount are printed.

Furthermore, a magnetic barcode 1B is preprinted on the back side of the magnetic card 1. This magnetic barcode 1
B indicates encoded information regarding the rotation of the magnetic head when data stored in the magnetic card 1 is read or written by the magnetic head, as will be described later. Therefore, it goes without saying that the card does not have the magnetic barcode 1B printed on the predetermined force point of the card, but if the magnetic barcode 1B is printed on the predetermined force point, the rotating direction of the magnetic head indicated by this magnetic barcode is If the pattern of the magnetic data does not match the pattern of the recorded magnetic data in the recording direction, the recorded data cannot be read. Therefore, fraud such as theft or falsification of recorded data can be prevented.

The magnetic barcode 1B of this embodiment is made of a magnetic material such as gamma iron oxide or barium ferrite.

In particular, in this embodiment, the magnetic material between the magnetic bars or the magnetic material itself is changed for each magnetic bar.

In other words, the amount of magnetic material (magnetic ink hanging) for each magnetic bar
Alternatively, by changing the magnetic material, the amount of magnetism of each magnetic bar changes. Therefore, unlike conventional magnetic barcodes, the structure of a magnetic barcode cannot be understood at first glance; the information contained in a magnetic barcode can be read by reading the difference in the amount of magnetism of each bar with a magnetic barcode sensor. It will be done.

In this way, the magnetic barcode 1B is constructed by changing the amount or quality of magnetic material for each bar of each magnetic barcode 1B and combining them, so the data content of the magnetic barcode can be easily changed. There is no risk of it being read. Further, by setting a plurality of magnetic material amounts or magnetic materials, magnetic barcodes 1B having various amounts of magnetism can be configured, so the number of patterns that can be expressed by the magnetic barcode 1B can be increased.

FIG. 3 is a sectional view showing the internal structure of the magnetic card.

This magnetic card 1 is made by laminating a magnetic layer 3 on one side of a PET resin layer 2 with a thickness of 200 μm, and then
A tin layer 4 with a thickness of about 600 Å is laminated thereon, and a protective layer 5 is further laminated on this tin layer 4.

The magnetic layer 3 is made of gamma iron oxide or barium ferrite, and has a high magnetism of about 2700 (Oe).

Further, the tin layer 4 is melted by heating from a thermal head during printing, and the lower magnetic layer 3 is exposed as shown by the reference numeral in FIG. 3, whereby a predetermined printing is performed.

FIG. 4 shows the magnetic recording section 1 of the magnetic card 1 in this embodiment.
This diagram schematically shows the data recording state of A.

The figure shows an example in which one bit string is composed of 8-bit magnetic data, and the magnetization direction of each bit string is different for each pit string. For example, the first pit row is vertical, the second bit row is about 45° to the left, etc.
, the fifth and sixth pit rows are magnetized in a direction of approximately 45° to the right.

In this manner, in this embodiment, the direction of magnetic recording can be determined not only in the vertical direction but also at various angles in the left and right diagonal directions, so that a large number of magnetic recording directions can be set for each card. As a result, fraud such as theft or falsification of written data can be prevented.

Further, as shown in FIG. 5, in this embodiment, the magnetic recording section 1A is particularly divided into three parts, and a code for determining the rotating direction of the magnetic head can also be stored in the first block 1A1. Also,
The next two blocks IA2 and IA3 store magnetic data and rule data for reading this magnetic data.

For example, if rule data is stored to invert and read the data stored in each block 1A2 or 1A3, if the magnetic data is "10110011", it is read as inverted '01001100'.

This configuration further prevents fraud such as theft or falsification of magnetic data.

The device of this embodiment shown in Fig. 1 performs magnetic data processing such as reading magnetic data of a magnetic card, checking layered and filled data, and also prints necessary information on the surface of the magnetic card after processing the magnetic data. and then discharged to the outside of the device.

In FIG. 1, the magnetic card 1 inserted through the insertion slot 11 is transported by a first conveyance roller 13 provided on a conveyance path 12. Platen roller 15. 21st fe feed roller 17. The third conveyance roller 19 and the fourth conveyance roller 21 convey the material to the inner part of the apparatus.

Each of these rollers 13, 15, 17, 19, and 21 is belt-driven by a pulse motor (Wi feed motor) 23 via a boot provided for each roller. Further, each conveyance roller 13, 17, 19 and 21 is driven by a pulse motor 2.
The rollers 13, 17, 19, and 21 rotate in the same direction relative to the rollers 13, 17, 19, and 21 due to the reverse rotation of the pulse motor 23.

On the other hand, the platen roller 15 always rotates counterclockwise in FIG. 1, regardless of whether the pulse motor 23 rotates clockwise or counterclockwise.

Directly above the platen roller 15, a thermal head 25 having a depth approximately equal to the width of the magnetic card 1 is arranged to face and print on the surface of the magnetic card being conveyed.

Further, a magnetic head 27 is placed directly above the 31st feed roller 19.
is provided to read and write data in the magnetic card.

Furthermore, a magnetic barcode sensor 29 is disposed on the conveyance path 12 at an approximately intermediate position between the third conveyance roller 19 and the fourth conveyance roller 21, so that the magnetic barcode 1B provided on the magnetic card 1 can be read. It has become.

A first card sensor 35 is located on the transport path at the end of the insertion slot 1 side, a second card sensor 37 is located between the first card sensor 35 and the first transport roller 3, and a second card sensor 37 is located between the second WJ transport roller 17 and the third transport roller 3.
Third and fourth card sensors 3 are provided between the transport roller 19 and the transport roller 19.
9 and 41, a fifth card sensor 4 is located at the end of the conveyance path.
3 are arranged respectively.

Each of the card sensors 35, 37, 39, 41 and 43 is composed of, for example, a photo sensor consisting of a pair of light emitting/light receiving elements, and when a card tip or a card intrusion is detected, it is based on the detection signal. Controls such as forward/reverse rotation of the motor and printing timing are executed.

Conveyance path 1 between the first conveyance roller 13 and the platen roller 15 and between the platen roller 15 and the second'III conveyance roller 17
2, a 17th wrapper 50 for switching the card conveyance route;
．． and a twenty-seventh wrapper 60 are provided.

Next, reading the magnetic card in the device of this embodiment,
The involvement process will be explained.

Platen roller 15. 2nd conveyance roller 17 and 311th
The magnetic barcode of the magnetic card 1 conveyed by the 12 feed roller 19 is read by the magnetic barcode sensor 29 . As mentioned above, this magnetic barcode contains information that determines the direction of rotation of the magnetic head 27 when checking the reading, writing, and writing of data stored or recorded in the recording section of the magnetic card 1; That is, the magnetic recording pattern is shown as a bar code.

The magnetic head 27 is a head rotation motor (pulse motor)
31, the magnetic card 1 is rotated about an axis perpendicular to the magnetic card 1 via a belt 32. Further, this magnetic head 27 is a combination head for both reading and writing.

Further, in this embodiment, a potentiometer 33 for specifically detecting the rotation angle of the magnetic head 27 is attached to the rotation shaft of the magnetic head 27, as shown in FIG.

FIG. 6 is a plan view schematically showing the potentiometer 33.

A slider 33a is attached to the rotating shaft 27a of the magnetic head 27. Also, a cylinder 33 centered on this rotation axis
b is composed of a resistor. And the magnetic head 27
The slider 33a rotates in accordance with the rotation of the slider 33a, and a voltage proportional to its position is output.

In this embodiment, the potentiometer 33 for detecting the rotational position of the magnetic head 27 is provided in the magnetic head 27, so that it is possible to detect not only the initial position but also the detected angle of the magnetic head 27 and the target angle. By employing feedback control or the like for matching, the magnetic head 27 can be adjusted to a minute position [uJill]. Furthermore, since the potentiometer 33 is provided within the magnetic head 27, angle detection can be easily and easily performed without requiring a large mounting space.

By the way, if the angle control of the magnetic head 27 becomes impossible due to an accident in the software of the control device, which will be described later, for example, the magnetic head 27 will fly off, and if it rotates in the same direction many times, it will break the control cord line of the magnetic head 27. There is a fear.

Therefore, in this embodiment, a stopper 33C is provided in the potentiometer to prevent it from rotating more than 45 degrees left and right from the initial position (the position where writing is performed perpendicular to the longitudinal direction of the card).

FIG. 7 is a block diagram showing the electrical configuration of the control system of this device.

This device has a control unit 1 configured with GPLI as the control center.
01, and each of the card sensors 35-
43 is connected via the A/D converter 103. In addition, the transport motor 23. The head rotation motor 31 and the thermal head 25 are connected through separate driver circuits 105, 107 and 109, respectively. Furthermore, the magnetic head 2
The bodension meter 33 that detects the rotation angle of 7 is an A/D
It is connected via a converter 111.

In addition, the control unit 101 includes the magnetic barcode sensor 29. Main memory 113 and memory 115 are connected.

The main memory 115 is composed of a ROM, and stores the 1tlJ control program for the entire system. Further, the memory 115 stores a print pattern to be printed on the magnetic card 1 via the thermal head 25.

In such a configuration, when the magnetic card 1 is inserted from the insertion slot 11, the first card sensor 35 detects the card 1.
The tip of the is detected. As a result, a motor drive signal is sent from the control unit 101 to the driver 105, and the transport motor 23 is rotated.

The magnetic card 1 is transferred to the first transport roller 13. Platen roller 1
5. It is transported via the second transport roller 17 and the third m-th transport roller 19. Then, when the card 1 passes over the magnetic barcode sensor 29, the magnetic barcode 1B is read and supplied to the control section O1.

When the leading end of the magnetic card 1 is detected by the fifth card sensor 43, the controller 101 sends a signal to the driver 108 and the motor 23.
A reverse rotation command is output, and the card 1 is conveyed to the insertion slot side. During the transportation, recorded data in the magnetic recording section of the card 1 is read by the magnetic head 27. At this time, the magnetic head 27 is rotated according to the rotation pattern indicated by the magnetic barcode. Therefore, if the rotation pattern indicated by the magnetic barcode and the rotation pattern during magnetic recording do not match, the data cannot be read.

When the leading end of the magnetic card 1 from which the recorded data has been read is detected by the fourth card sensor 41, the motor 2 is activated again.
3 rotates in the opposite direction, and is conveyed to the magnetic head 27, whereupon new data is written to the magnetic recording section of the magnetic card 1.

Then, the tip of the card 1 is connected to a fifth card sensor 43.
When detected, the card 1 is conveyed to the ejection side, and the data recorded on the magnetic card 1 is read by the magnetic head 27. This reading checks whether the data has been recorded correctly.

After the data check, the magnetic card 1 is transferred to the second conveyance roller 1
It is transported up to 7. The magnetic card 1 is conveyed by the flapper 60 between the platen roller 15 and the thermal head 25, and the thermal head 25 prints a predetermined character on the surface of the card. The printing timing is determined by the timer setting FR in the control unit 101, which starts from the time when the insertion side tip of the magnetic card 1 is detected by the third card sensor 39.

Then, the printed magnetic card 1 is transferred to the first conveyance roller 1.
3 and is discharged from the insertion port 11.

When the insertion-side leading end of the magnetic card 1 is detected by the first card sensor 35, the pulse motor 23 stops, and the series of processes ends.

[Effect of the Invention 1] As explained above, according to the present invention, by providing the head and the detection unit that reads information from the position indicating unit provided on the recording medium adjacent to each other, the device becomes compact, and maintainability and maintenance are improved. Improved reliability.

[Brief explanation of the drawing]

FIG. 1 shows the magnetic card reading and
It is a block diagram of a writing device, and the same figure (A) is a front view, and the same figure (A) is a front view.
B) is a plan view, FIG. 2(C) is a left side view, FIG. 2 is a perspective view showing the configuration of a magnetic card according to an embodiment of the present invention, and FIG. 3 is a sectional view showing the internal structure of the magnetic card. , 4 and 5 are dimensional drawings showing examples of recording in the magnetic recording section of the same magnetic card, and 6.
Figure 7 is a block diagram showing the electrical configuration of a potentiometer according to an embodiment of the present invention, Figure 7 is a block diagram showing the electrical configuration of an embodiment of the present invention, and Figures 8 and 9 are data storage diagrams of conventional magnetic cards. FIG. 3 is a diagram showing a recording example.

Claims (2)

[Claims] (1) A head provided opposite to a recording section of a recording medium to read and write information to the recording section; and a position changing means for varying the opposing positional relationship between the head and the recording section of the recording medium. , a detecting section for detecting a position indicating section of the recording medium on which the positional information of the head by the position changing means is indicated, and the detecting section and the head are provided adjacent to each other. Media reading/writing device. (2) The recording medium reading/writing device according to claim 1, wherein the detection section is a magnetic barcode sensor that reads a magnetic barcode on the recording medium.