JPH05166112A - Card recording/reproducing device - Google Patents

Abstract

PURPOSE:To provide a card recording/reproducing device which can monitor the slip of an inserted card by reproducing the recorded information on the card end recording the different information on the card based on the repro duced information to finally eject the card. CONSTITUTION:In a verifying state, the output pulses of an encoder 24 which are synchronous with the revolution of a motor 11 provided in the transfer mechanism of a card 13 are counted by a counter 32 as the reference clock pulses. Meanwhile a counter 31 counts the clocks of the reproduction date on the card 13 which are extracted by a demodulator 26. A comparator 33 compares the count values of both counters 31 and 32 with each other and it is judged that the slip of the card 13 occurred when the difference of both count values is not equal to a prescribed level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card recording / reproducing device, and more particularly to reproducing already recorded information of an inserted magnetic card,
The present invention relates to a card recording / reproducing apparatus for recording another information on the magnetic card based on the reproduction information and ejecting the magnetic card.

A card recording / reproducing apparatus called a card reader / writer for recording / reproducing information on a magnetic card such as a prepaid card records / reproduces information while conveying the card at a constant speed. It is necessary to prevent the accuracy of recorded data from deteriorating when the card transport speed is disturbed due to slippage.

[0003]

2. Description of the Related Art FIG. 3 is a conceptual diagram of the vicinity of a card insertion / removal mechanism of a card recording / reproducing apparatus. The plurality of rollers 1a to 1e are arranged in the horizontal direction at predetermined intervals, while the rollers 1a, 1e are arranged.
Rollers 2a, 2b, 2c, and 2d are arranged in a horizontal direction at positions that are close to and spaced from b, 1d, and 1e. The magnetic head 3 is arranged at a position close to and away from the roller 1c.

Upper rollers 1a-1e and lower roller 2
The distance from a to 2d is set to a value slightly smaller than the thickness of the magnetic card 5, and, for example, the rollers 1a to 1e are elastically movable up and down. For example, the lower roller 2
A to 2d are configured to be rotatable in both forward and reverse directions by a motor (not shown). Of course, the upper roller 1a-
1e and the lower rollers 2a to 2d may be rotated by motors.

The magnetic card 5 is, for example, a thin plate-shaped recording medium in which a magnetic stripe 6 is formed at a predetermined position as a recording / reproducing portion of information data as shown in FIG. When a person holds this magnetic card 5 by hand and inserts it in the direction indicated by an arrow A in FIG. Then, the magnetic card 5 is inserted into the direction of the arrow A to the back.

The transfer of the magnetic card 5 in the direction of arrow A is carried out at a constant speed by the rotation of the rollers 2a to 2d by the motor, and the recorded data on the magnetic stripe 6 is reproduced by the magnetic head 3 at that time. When data to be newly recorded is generated by the control device based on the reproduced data and the external input data, the motor is rotated in the reverse direction this time, and the direction of the arrow B in FIG. The magnetic card 5 is transferred.

The transfer of the magnetic card 5 in the direction of the arrow B is also carried out at a constant speed as in the case of the reproduction, and at that time, the data to be recorded by the magnetic head 3 is written on the magnetic stripe 6. FIG. 5A shows a clock pulse synchronized with the rotation of the motor at the time of writing, and the data shown in FIG. 5B is synchronized with the clock pulse and the data shown in FIG. It is recorded on the magnetic stripe 6.

In the conventional card recording / reproducing apparatus, after the above recording, the motor is rotated in the forward direction to move the magnetic card 5 again in the direction of arrow A in FIG. The recorded data is reproduced and a verify check is performed to compare the data recorded in the memory with the data recorded immediately before. Then, the motor is rotated in the reverse direction again to eject the magnetic card 5 out of the apparatus. I am trying to do it.

[0009]

However, in the magnetic card 5, the magnetic card 5 with dust and other attached substances adhered thereto.
When the card is inserted into the card insertion slot 4, an adhering substance causes a slip (slip) between the upper rollers 1a to 1e or the lower rollers 2a to 2d and the magnetic card 5, so that the transfer speed of the magnetic card 5 is constant. As a result, during recording, the bit period T of the recording data shown in FIG. 5C is not constant.

In the conventional card recording / reproducing apparatus, since the verify check is performed as described above, when the data cannot be perfectly properly recorded due to the slip of the magnetic card 5, it can be detected. If the data cannot be said to be completely broken even though the bit periods T are not uniform due to the slippage, it may not be detected by the verify check.

In this case, if an attempt is made to reproduce the magnetic card 5 on which data is recorded with non-uniform bit periods by another card recording / reproducing apparatus, the recorded data cannot be said to be reproduced properly, and the compatibility of the cards is reduced. Is insufficient.

The present invention has been made in view of the above points,
An object of the present invention is to provide a card recording / reproducing device which solves the above problems by monitoring the slip of a card.

[0013]

FIG. 1 shows a block diagram of the principle of the present invention. The transfer mechanism 12 uses the rotation of the motor 11 to transfer the card 13 at a constant speed in a direction of inserting the card 13 into the apparatus and a direction of ejecting the card 13 to the outside of the apparatus. The recording / reproducing means 14 is provided for the card 1 when the card 13 is transferred in the inserting direction.
The recorded data of No. 3 is reproduced, and when the card 13 is transferred in the ejection direction, any recorded data is recorded on the card 13. Further, the detection means 15 substantially detects the bit period of the recording data of the card 13 on which the arbitrary recording data is recorded by the recording / reproducing means 14.

[0014]

When the transfer mechanism 12 transfers the card 13 in the apparatus in the ejecting direction, the card 1 is attached by the adhered matter on the card 13.
When there is a part where the coefficient of friction of the surface of 3 is extremely low, the transfer mechanism 12 is caused by the so-called slip of the card 13.
Cannot transfer card 13 at a constant speed, so card 1
Arbitrary data recorded in 3 is not recorded in a constant bit period. In the present invention, however, since the detecting means 15 substantially detects the bit period of the recording data of the card 13, it is possible to detect the presence or absence of slip of the card 13.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a block diagram of an embodiment of the present invention. In the figure, the same components as those in FIG. 1 are designated by the same reference numerals.
In FIG. 2, the card 13 is transferred by the transfer mechanism shown in FIG. 3 in the inserting direction into the apparatus or the discharging direction to the outside of the apparatus. The transfer direction and transfer speed are controlled by the motor 11 shown in FIG. Further, as described above, data is recorded or reproduced on the card 13 by the magnetic head 21 (corresponding to the magnetic head 3 in FIG. 3) during the above-mentioned transfer.

The magnetic head 21, together with the switch circuit 22 and the write circuit 23, constitutes the recording / reproducing means 14. Further, the motor 11 has an encoder 24 on its rotation axis.
Is attached, and a pulse having a cycle corresponding to the rotation speed of the motor 11 is generated as a reference clock pulse by the encoder 24 having a known configuration. The switch circuit 22 has a terminal a
One of b and b is selected by the output switching signal of the control device 30. The terminal a of the switch circuit 22 is the amplifier 2
5 is connected to the demodulator 26 through the switch circuit 2
The second terminal b is connected to the output terminal of the write circuit 22, and the common terminal c of the switch circuit 22 is connected to the magnetic head 21.

The encoder 24, the demodulator 26 and the control device 30 constitute the above-mentioned detecting means 5. Control device 3
Reference numeral 0 has at least counters 31 and 32 and a comparator 33, and also has a central processing unit (CPU) and a memory, which generate data to be recorded, decode demodulated data, Manages control.

Next, the operation of this embodiment will be described. First, assuming that the card 13 is inserted into the card insertion slot in the device, the control device 30 which detects the insertion rotates the motor 11 in the forward direction, and switches and connects the switch circuit 22 to the terminal a side. By the rotation of the motor 11 in the forward direction, the card 13 is automatically transferred to a predetermined position in the back of the apparatus by the transfer mechanism described above. During the transfer in the insertion direction, the magnetic head 21 reproduces the recorded data on the card 13.

The reproduced data is modulated by a modulation method capable of self-clocking suitable for magnetic recording / reproduction, is input to the amplifier 25 through the switch circuit 22, is amplified to a required level here, and then is input to the demodulator 26. Is entered.
The demodulator 26 demodulates the input reproduction data, obtains the demodulation data, and extracts the clock component. These demodulated data and clock components are input to the control device 30 and decoded.

The control device 30 analyzes the demodulated data reproduced and input, and generates new data as recording data based on the information input from the outside. For example card 13
In the case of a prepaid card, the demodulated data indicates the balance of the owner of the card 13, and the external input information indicates the amount to be deducted this time. Is generated as recording data.

When the control device 30 generates the recording data, it controls the motor 11 to rotate in the reverse direction and switches the switch circuit 22 to the terminal b side. In addition, the control device 3
The recording data generated at 0 is input to the writing circuit 22, where it is latched by the reference clock pulse from the encoder 24 to be synchronized, and then supplied to the magnetic head 21 through the switch circuit 22.

At this time, the card 13 is transferred at a constant speed in the ejecting direction by the reverse rotation of the motor 11, and the recording data is recorded by the magnetic head 21 during the transfer.

When the above recording is completed, the controller 30 again controls the motor 11 to rotate in the forward direction for the purpose of the verify check, and the switch circuit 22 is connected to the terminal a.
Switch connection to the side. As a result, the card 13 is automatically transferred again in the insertion direction, and the magnetic head 21 is moved during the transfer.
Thus, the newly written already recorded data on the card 13 is reproduced.

The above reproduced data is supplied to the demodulator 26 via the switch circuit 22 and the amplifier 25, where it is demodulated data as in the case of the first reproduction and the clock component is extracted. The extracted clock component is counted by the counter 31. On the other hand, the reference clock pulse extracted from the encoder 24 in synchronization with the rotation speed of the motor 11 is supplied to the counter 32 and counted.

The respective count values of the counters 31 and 32 are supplied to the comparator 33, where they are compared in magnitude. Here, when the card 13 is transported in the ejection direction at a constant speed, the bit period of the recording data written in the card 13 is constant, so that the total number of clock components extracted from the demodulator 26 at the time of verify is the verify. Even when the card 13 is transported at a constant speed, the output reference clock pulse number of the encoder 24 always has a predetermined relationship.

However, when data is recorded on the card 13 which is not transferred at a constant speed due to slippage in the card 13, the total number of clock components extracted from the demodulator 26 at the time of verification is counted by the counter 32. The output reference clock pulse number of the encoder 24 is different from that in the normal state.

Therefore, the comparator 33 counts the count value of the counter 31 (the total number of clock pulses extracted from the reproduced data) and the count value of the counter 32 (encoder 2 at the time of verification).
4 is compared with the reference clock pulse number), and when there is no relation between the values in the normal state, for example, an alarm signal is transmitted. When the alarm signal is output, the control device 30 informs the outside that the card 13 is not normally recorded. Further, the recording operation may be performed again for a card on which insufficient recording has been performed due to slippage.

At the time of the above-mentioned verification, as in the conventional case, it goes without saying that a normal verify operation is performed to determine whether the written data is the same as the data to be recorded. After completion of this verify operation, the control device 30 controls the motor 11 to rotate in the reverse direction again, and the writing circuit 22 is deactivated, so that the card 13 is ejected as it is without recording to the card 13. Let

As described above, in the present embodiment, reproduction →
In a sequence of recording-verify-discharge card recording / reproducing apparatus, a slip check of the card 13 is performed in addition to the normal verify operation at the time of verify, so that a slip of the card 13 causes insufficient compatibility of the record card. Can be prevented.

Next, another embodiment of the means for detecting the presence or absence of slip of the card 13 will be described. When slippage occurs on the card 13, the bit period of the data recorded on the card 13 is not constant, as described above. Therefore, in this embodiment, the clock extracted by the demodulator 26 at the time of verification is supplied to the control device 30, and the control device 30 measures the interval of the input clock. The clock interval corresponds to the bit period and is originally constant. Therefore, when the clock interval is not constant, it is detected that the card has slipped.

The present invention is not limited to the above embodiment, and for example, the detection of the presence or absence of the slip of the card is
It may be performed not only at the time of verification but also at the time of reproduction.

[0032]

As described above, according to the present invention, since it is possible to detect the presence or absence of a slip of a card, it is possible to always write arbitrary data to a card having no slip, and the compatibility due to the slip of the card. In this way, it is possible to prevent the occurrence of inadequate cards, and to contribute to the improvement of the reliability of the card recording / reproducing apparatus as compared with the conventional one.

[Brief description of drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a configuration diagram of an embodiment of the present invention.

FIG. 3 is a conceptual diagram of an example of a card recording / reproducing device.

FIG. 4 is a plan view of an example of a card.

FIG. 5 is a time chart for explaining the operation of the card recording / reproducing device.

[Explanation of symbols]

 11 Motor 12 Transfer Mechanism 13 Card 14 Recording / Reproducing Means 15 Detecting Means 21 Magnetic Head 23 Writing Circuit 24 Encoder 26 Demodulator 30 Control Device 31, 32 Counter 33 Comparator

Claims (3)

[Claims] 1. A transfer mechanism (12) for transferring a card (13) into and out of the device at a constant speed by using rotation of a motor (11), and the card (13). ) Is transferred in the insertion direction, the recorded data on the card (13) is reproduced, and when the card (13) is transferred in the ejection direction, any recorded data is recorded on the card (13). Recording / reproducing means (14) for recording, and detection means (15) for substantially detecting the bit period of the recording data of the card (13) on which arbitrary recording data is recorded by the recording / reproducing means (14). A card recording / reproducing apparatus having: 2. The detecting means (15) extracts an encoder (24) for generating a pulse synchronized with the rotation of the motor (11) and a clock pulse of recorded data reproduced from the card (13). The demodulator (26) is compared with the number of output pulses of the encoder (24) and the number of output clock pulses of the demodulator (26) per unit time when the card (13) is moved in the insertion direction. Comparing means for detecting the bit period of the recorded data (3
1 to 33), the card recording / reproducing apparatus according to claim 1. 3. The detection means (15) demodulates the recorded data reproduced from the card (13) and extracts a clock pulse thereof, and a demodulator (2).
6. The card recording / reproducing apparatus according to claim 1, further comprising a measuring means (30) for measuring the pulse interval of the output clock pulse of 6).