JP5271000B2 - Magnetic card reader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve security of a magnetic card reader with simple constitution, in a magnetic card reader. <P>SOLUTION: The magnetic card reader 1 reading information stored in a magnetic stripe B of a magnetic card C by a magnetic head 6, has a function of immediately stopping card conveyance when information is read by the magnetic head 6 and the end of the information is detected. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a magnetic card reader that reads information stored in a magnetic card.

Conventionally, in a card processing apparatus equipped with a magnetic head for reading information recorded on a credit card or the like, the magnetic head has a head body and a control unit, and the card information read by the head body is encrypted by the control unit. In some cases, the card information is transmitted to the main body control unit of the card processing device to improve the security of the card processing device (see, for example, Patent Document 1).
JP 2001-143213 A

  However, in the above-described conventional card processing apparatus, even if the card information is encrypted, there is a possibility that the card information may be read using a magnetic head different from the original magnetic head. There was a problem that proper security could not be achieved.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to improve the security of a magnetic card reader with a simple configuration.

In order to solve the above-described problems, the present invention provides a magnetic card reader that reads information stored in a magnetic stripe of a magnetic card inserted from an insertion slot using a magnetic head. When the end is detected, the card has a function of immediately stopping the card conveyance, and the magnetic head and the control unit that receives the information read by the magnetic head each store unique information corresponding to each other, and the control unit The unique information of the magnetic head is periodically acquired, and the unique information of the magnetic head is detected when insertion of the magnetic card is detected before the magnetic head reads the information of the magnetic card. Acquiring each time, the unique information corresponding to the unique information of the control unit for each periodic acquisition or for each acquisition. Determines whether receive from the head, when said by the control unit is determined to be unable to receive the unique information of said magnetic head, to provide a magnetic card reader, characterized in that stops reading function .
According to this configuration, when the information stored in the magnetic stripe is read by the magnetic head while the magnetic card is being conveyed and the end of the information on the magnetic stripe is detected, the conveyance of the magnetic card is immediately stopped. According to the above configuration, since the conveyance of the magnetic card is stopped when the end of the information on the magnetic stripe is detected, another magnetic data pickup module provided in the vicinity of the magnetic head reads only discontinuous information. The security of the magnetic card reader can be improved. In addition, security can be improved simply by stopping card conveyance immediately after the end of information is detected, and security can be improved with a simple configuration without greatly changing the conventional configuration.
In addition, when the unique information corresponding to the unique information stored in the control unit cannot be received from the magnetic head, the reading function is stopped, so that the unique information corresponding to the unique information stored in the control unit is stored. Information on the magnetic card cannot be read using a magnetic head other than the magnetic head. In addition, since it is periodically determined whether or not the unique information can be received even when the magnetic card is not being read, it is possible that fraud such as replacement of the magnetic head has been performed without performing the magnetic card read operation. The magnetic card reader that has a characteristic stops the reading function. Further, before reading the magnetic card by the magnetic head, it is determined whether or not the unique information corresponding to the unique information stored in the control unit can be received from the magnetic head. If the unique information cannot be received, the magnetic card The reading function of the reader is stopped. As described above, the security of the magnetic card reader can be improved.

In the above configuration, the end of the information may be detected by reading an end code of a data area in the magnetic stripe.
In this case, Ru can be stopped reliably conveyed of the magnetic card to read the end code of the data area.

Moreover, card conveyance may be stopped with the completion | finish of the said information, and the said magnetic card may be conveyed to the insertion slot of this magnetic card, and may be discharged | emitted.
In this case, after the card conveyance is stopped, the magnetic card is conveyed to the insertion slot of the magnetic card and ejected. Therefore, the magnetic card is not conveyed in the reading direction beyond the point where the end of information is detected. For this reason, the security of the magnetic card reader can be improved.

Furthermore, after the card conveyance is stopped with the end of the information, the conveyance of the magnetic card may be temporarily stopped in the process of conveying and ejecting the magnetic card.
In this case, the conveyance of the magnetic card is temporarily stopped in the process of ejecting the magnetic card after reading the information on the magnetic card. As a result, another magnetic data pickup module provided in the magnetic card ejection path can read only discontinuous information, and the security of the magnetic card reader can be improved.

  According to the present invention, when the end of information is detected in the magnetic card reader, the card conveyance is immediately stopped, so that the security of the magnetic card reader can be improved with a simple configuration.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a plan view showing a configuration of a magnetic card reader according to an embodiment of the present invention. FIG. 2 is a perspective view of the magnetic card reader.
The magnetic card reader 1 is a device that reads card information (information) recorded on a magnetic card C represented by a credit card or the like. Here, the magnetic card C is a credit card, and the magnetic card reader 1 is provided so as to be embedded in the front of a vending machine or the like that can be settled by a credit card.

  The magnetic card C has a magnetic stripe B extending linearly in FIG. 1, and card information stored in the magnetic card C is magnetically recorded on the magnetic stripe B. In the magnetic card reader 1, the magnetic card C is inserted into the magnetic card reader 1, and the card information is read when it is sent in the reading conveyance direction indicated by the arrow X in the figure, and then discharged to the right in the figure. Is done.

The magnetic card reader 1 has a substantially box-shaped housing 2, and inside the housing 2 are transport rollers 3 a, 3 b and 33 a, 33 b that transport the magnetic card C, and transport rollers 3 a, 3 b and 33 a, 33 b. Are provided with a shaft 4, a transport motor 5 for driving the transport rollers 3a, 3b and 33a, 33b, and a magnetic head 6 for reading card information.
The housing 2 includes side plates 7 and 8 extending in the conveyance direction of the magnetic card C, a front plate 9 positioned on a surface through which the magnetic card C is inserted, and a rear plate 10 provided to face the front plate 9. And a bottom plate 11 that forms the bottom surface of the housing 2. Further, a guide member 34 (FIG. 2) is provided on the inner side surface of the housing 2 in the side plates 7 and 8 to guide the magnetic card C in the transport direction so as to sandwich both ends thereof.

  The side plates 7 and 8 are provided to face each other, and conveying rollers 3a and 3b and 33a and 33b supported on the shaft 4 are bridged between the side plates 7 and 8, respectively. Each of the transport rollers 3a, 3b and 33a, 33b is provided as a pair, and is disposed so as to face the vertical direction in FIG. The card C is sandwiched and conveyed. The transport rollers 3a and 33a are upper rollers, and the transport rollers 3b and 33b are lower rollers. Further, the transport rollers 3a and 3b are disposed on the upstream side in the transport direction of reading of the magnetic card C, and the transport rollers 33a and 33b are disposed on the downstream side.

The edge portions of the side plates 7 and 8 are bent so as to face the outside of the housing 2 over the entire circumference to form rib-like walls. The side plate 7 is surrounded by the rib-shaped wall through which the shaft 4 and the shaft of the transport motor 5 penetrate, and gears 12 and 13 are attached to the ends of the shaft 4 and the shaft of the transport motor 5, respectively. Yes. A plurality of gears that mesh with the gears 12 and 13 are provided between the gears 12 and 13, and a gear train 14 that transmits the driving force of the transport motor 5 to the transport rollers 3a, 3b and 33a, 33b is configured. Yes.
Further, a control unit 50 is provided on the outer surface of the bottom plate 11. The control unit 50 performs overall control of the magnetic card reader 1 such as control of driving of the transport motor 5 and control of the magnetic head 6.

  A partition plate 15 that partitions the housing 2 in the vertical direction is provided at a substantially intermediate position in the height direction of the housing 2. The partition plate 15 is located slightly below the upper surface of the transport roller 3b, and extends in parallel with the surface of the magnetic card C. One end of the shaft 4 that supports the transport roller 3 b is supported by a rib-like portion 15 a formed on the partition plate 15. Further, as shown in FIG. 1, a front cover 16 having an insertion slot 16 a for the magnetic card C is attached to the surface of the front plate 9. The magnetic card C inserted from the insertion slot 16a is transported while being sandwiched between transport rollers 3a, 3b and 33a, 33b that are rotationally driven by the transport motor 5, and is stored in the magnetic stripe B during this transport. The card information thus read is read by the magnetic head 6. The magnetic head 6 reads the card information by contacting the magnetic stripe B.

  The conveyance roller 3b is formed shorter in the axial direction than the conveyance roller 3a, and a magnetic head 6 is provided immediately below the conveyance roller 3a and adjacent to the conveyance roller 3b. Further, in the vicinity of the magnetic head 6, an insertion detection means (not shown) for detecting that the magnetic card C has been inserted into the insertion slot 16a is provided. This insertion detection means is connected to the control unit 50.

FIG. 3 is a functional block diagram of the magnetic head 6 and the control unit 50.
The magnetic head 6 includes a reading unit 26 that reads card information magnetically stored in the magnetic stripe B, a head-side control circuit 27 that controls the reading unit 26, and a memory 29 that is connected to the head-side control circuit 27. I have.
The head side control circuit 27 includes an amplifier (not shown), an A / D converter (not shown), and an encryption unit 71 having an encryption key for encrypting card information. The card information read by the reading unit 26 is output to the amplifier as an analog signal. The analog signal amplified by the amplifier is converted into a digital signal by the A / D converter, and then encrypted by the encryption unit 71. It is output to the control unit 50.

The control unit 50 includes a CPU 51 that performs arithmetic processing of the control unit 50, a motor drive circuit 52 that controls driving of the transport motor 5, and a memory 53 connected to the CPU 51. Then, the CPU 51 includes a decryption unit 72 having a composite key for decrypting the encrypted card information, a code detection unit 54 for detecting the start and end of the card information, and unique information for acquiring unique information 30 described later. An acquisition unit 55, a validity determination unit 56 that determines the validity of the unique information 30, and a notification unit 57 that outputs the determination result of the validity determination unit 56.
In addition, the control unit 50 includes a communication line (not shown) for transmitting card information to the outside. The card information input as a digital signal from the head-side control circuit 27 to the control unit 50 is encrypted by the control unit 50 by a predetermined method and transmitted to the outside via a communication line.

  By the way, in a conventional magnetic card reader, when a magnetic head that reads card information is replaced with another magnetic head or the like that can be read by a third party or the like, the card information is read and security is increased. There was a risk of decline.

  In the magnetic card reader 1, the unique information 30 is stored in the magnetic head 6 and the verification unique information 40 (unique information) is stored in the control unit 50 for the purpose of improving security. The unique information 30 is unique information given to each magnetic card reader 1, and the verification unique information 40 is unique information given to the unique information 30 as a pair. That is, the unique information 30 and the verification unique information 40 are unique information given to each magnetic card reader 1, and the unique information 30 is unique information corresponding to the verification unique information 40. Specifically, the specific information 30 is stored in the memory 29 of the magnetic head 6, and the verification specific information 40 is stored in the memory 53 of the control unit 50.

  In the magnetic card reader 1, the serial number of the magnetic card reader 1 is used as the specific information 30 and the verification specific information 40. Here, the unique information 30 that is the serial number and the unique information for verification 40 are the same information, but may be different information as long as they correspond to each other. When the pieces of information are different from each other, the validity determination unit 56 of the control unit 50 stores a correspondence relationship between the specific information 30 and the verification specific information 40.

  In the magnetic card reader 1, the unique information acquisition unit 55 of the control unit 50 acquires the unique information 30 of the magnetic head 6, and this unique information 30 corresponds to the verification unique information 40 stored in the memory 53 of the control unit 50. The validity determination unit 56 of the control unit 50 determines whether the information is unique information. The unique information acquisition unit 55 periodically acquires the unique information 30 and before the magnetic head 6 reads the card information, that is, when the insertion detection unit detects the insertion of the magnetic card C. Get 30 every time. Next, the validity determination unit 56 determines whether the unique information 30 is unique information corresponding to the verification unique information 40. The notification unit 57 displays the determination result of the validity determination unit 56 on the display unit (not shown) of the magnetic card reader 1.

When the validity determining unit 56 determines that the unique information 30 cannot be received, the control unit 50 prohibits the driving of the transport motor 5 and stops the transport function (reading function). Here, if the legitimacy determination unit 56 cannot receive the unique information 30 corresponding to the unique information 40 for verification, there is a possibility that the connection of the magnetic head 6 is disconnected, and the magnetic head 6 displays the unique information 30. There is a possibility that the magnetic card reader 1 has been replaced with another magnetic head or the like, or that the magnetic head 6 has been removed and some fraud has been performed. When there is a possibility that it has been broken, the reading function of the magnetic card reader 1 is stopped. The stop of the reading function of the magnetic card reader 1 may be a state in which the reading operation of the magnetic card C is not executed, and is not limited to prohibiting the driving of the transport motor 5, but the function of the magnetic head 6 is controlled by the control unit 50. It may be stopped or all functions of the magnetic card reader 1 may be stopped.
When the validity determining unit 56 determines that the unique information 30 has been received, the control unit 50 enables the transport motor 5 to be driven and puts the magnetic card reader 1 into a state in which the magnetic card C can be read. Control.

  Further, in the magnetic head 6 in which the unique information 30 is stored, since the unique information 30 is unique information given to each magnetic card reader 1, a third party has the same unique information as the unique information 30. It is difficult to obtain a magnetic head. Further, it is difficult for the third party to know that the unique information corresponding to the matching unique information 40 stored in the control unit 50 is the unique information 30. Therefore, there is an effect of preventing the magnetic head 6 from being replaced with an unauthorized magnetic head or the like, and the security of the magnetic card reader 1 is improved.

Further, in the magnetic card reader 1, the card information read by the reading unit 26 is encrypted by the encryption unit 71 and decrypted by the decryption unit 72 of the control unit 50. Information can be prevented from being stolen and security is high. For example, it is conceivable that a third party or the like attaches a cable for stealing card information directly to the magnetic head 6 without removing the magnetic head 6 and steals the card information. In the magnetic card reader 1, Since the card information is encrypted by the encryption unit 71 of the magnetic head 6, a third party or the like cannot steal correct card information. However, even if encryption is performed in this way, if the magnetic head is replaced with an unauthorized magnetic head or the like, improvement in security due to encryption cannot be expected.
Therefore, in the present embodiment, the card information read by the reading unit 26 is encrypted by the encryption unit 71 to improve security, and the unique information 30 of the magnetic head 6 is determined by the validity determination unit 56. The card information is prevented from being stolen by an unauthorized magnetic head or the like. For this reason, the magnetic card reader 1 is used in both cases where a cable for stealing card information is attached to the magnetic head 6 and when the magnetic head 6 is replaced with an unauthorized magnetic head or the like. Information can be prevented from being stolen and security is high.

FIG. 4 is a plan view showing a transport state of the magnetic card C when reading the information on the magnetic stripe B. FIG. Here, in FIG. 4, illustration of the conveyance rollers 3a and 33a is omitted.
Hereinafter, the conveyance state of the magnetic card C will be described with reference to FIGS.
As shown in FIG. 4A, the magnetic stripe B includes a data area D in which card information is stored and a timing area T in which card information is not stored. In the magnetic card C, the card information reading direction is defined in one direction indicated by an arrow X in FIG. The timing areas T are located separately on the magnetic stripe B before and after the data area D, and are provided at the front end and the rear end of the magnetic stripe B in the reading direction of the magnetic card C, respectively. In the data area D, a start code F indicating the start of card information is stored at the beginning of the reading direction of the magnetic card C in the data area D. On the other hand, in the data area D, card information Stores an end code E indicating the end of. Here, in the magnetic card C, card information is stored on both the front and back sides of the magnetic stripe B.

  When the control unit 50 detects that the magnetic card C has been inserted into the magnetic card reader 1 by the above-described insertion detection means, the transport rollers 3a and 3b are driven by the motor drive circuit 52, and the reading direction of the magnetic card C is reached. Transport to is started. Here, the magnetic card C is transported at a constant speed by the transport rollers 3a and 3b. When the magnetic card C is inserted in the direction opposite to the reading direction and the end code E is first detected by the code detection unit 54, the magnetic card C is not read and the magnetic card C It is discharged from the insertion port 16a.

  The state shown in FIG. 4B is a state in which the timing area T on the front side overlaps the magnetic head 6, and reading of card information by the magnetic head 6 has not started. As the magnetic card C is conveyed, the data area D reaches a position where it overlaps the magnetic head 6. First, the start code F is read by the magnetic head 6 and input to the code detection unit 54. Subsequently, the magnetic card C is conveyed at a constant speed, and at the same time, the card information stored in the data area D is continuously read by the magnetic head 6.

  As shown in FIG. 4C, when the magnetic head 6 reads the end code E at the rear end of the data area D and the code detection unit 54 detects the end code E, the control unit 50 detects the motor drive circuit. 52 is controlled to immediately stop the conveyance of the magnetic card C. As a result, the reading of the card information ends. However, as shown in FIG. 4 (d), the magnetic card C reads the card information due to the delay due to the time required for the control unit 50 to control the stop of the carry motor 5 and the inertia of the rotation of the carry rollers 3a and 3b. Moves slightly in the reading direction even after ending.

  Accordingly, since the conveyance of the magnetic card C is immediately stopped when the code detection unit 54 of the control unit 50 reads the end code E, another magnetic head or the like is provided on the downstream side in the reading conveyance direction of the magnetic head 6. Even so, this other magnetic head or the like cannot continuously read the card information of the magnetic stripe B.

When the reading of the card information is completed as described above, the magnetic card C is transported to the insertion slot 16a (FIG. 1) located in the direction opposite to the reading direction and discharged. For this reason, since the magnetic card C is not transported in the reading direction beyond the end code E, the end code E is not transported to the position of the other magnetic head or the like. All card information up to can not be read. Further, since the card conveyance is immediately stopped after the end code E is detected, there is an advantage that the time required for reading the card information can be shortened.
Further, when it is determined that the magnetic card C is a stolen card as a result of reading the magnetic card C, the magnetic card C is provided outside the housing 2 by driving the transport rollers 33a and 33b. It is collected in a collection box (not shown).

  Further, in the magnetic card reader 1, the control unit 50 controls the motor drive circuit 52 to temporarily stop the conveyance of the magnetic card C in the process of ejecting the magnetic card C as shown in FIG. . Then, after temporarily stopping the conveyance for a predetermined time, the control unit 50 conveys the magnetic card C again in the ejection direction, and as shown in FIG. 4 (f), the magnetic head 6 moves to the rear timing area T. Stops conveyance at the position that overlaps with. Here, the predetermined time for temporarily stopping the conveyance of the magnetic card C is that the continuity of the card information at the time of reading when the magnetic card C is read by another magnetic head or the like different from the magnetic head 6 is temporarily set. Set to a time that is lost due to a stop and the card information cannot be read accurately. Further, here, the temporary stop means that the conveyance in the discharge direction may be temporarily stopped, and the magnetic card C is temporarily discharged in the reading direction during the conveyance in the discharge direction. The conveyance in the direction may be temporarily stopped.

  As described above, according to the embodiment to which the present invention is applied, when the card information stored in the magnetic stripe B is read by the magnetic head 6 while the magnetic card C is conveyed, the end code E is detected. The conveyance of the magnetic card C is immediately stopped. Accordingly, when a magnetic head or the like different from the magnetic head 6 is provided on the downstream side in the conveyance direction of reading of the magnetic card C in the magnetic head 6 in order to steal the card information of the magnetic stripe B, this separate The magnetic head or the like cannot continuously read the card information by stopping the conveyance of the magnetic card C. Accordingly, the card information read by the other magnetic head or the like becomes discontinuous information, and the card information of the magnetic stripe B cannot be read correctly, so that the information on the magnetic card C is prevented from being read by another magnetic head or the like. The security of the magnetic card reader 1 can be improved. For example, a third party or the like may provide a magnetic data pickup module or the like as another magnetic head on the downstream side of the magnetic head 6 in order to steal information on the magnetic stripe B. In this case, according to the above configuration, since the conveyance of the magnetic card C is stopped when the end code E is detected, the magnetic data pickup module provided on the downstream side of the magnetic head 6 has only discontinuous information. The information on the magnetic card C cannot be read and cannot be stolen. Further, after detecting the end code E, security can be improved simply by stopping the card conveyance, and security can be improved with a simple configuration without greatly changing the conventional configuration.

Further, since the end code E is read to detect the end of the card information, the conveyance of the magnetic card C can be surely stopped.
Further, when the unique information 30 corresponding to the unique information for verification 40 stored in the control unit 50 cannot be received from the magnetic head 6, the reading function of the magnetic card reader 1 is stopped, and therefore stored in the control unit 50. The information on the magnetic card C cannot be read using a device other than the magnetic head 6 in which the unique information 30 that is paired with the collated unique information 40 is stored. For this reason, it is possible to prevent an unauthorized replacement with a magnetic head and to improve the security of the magnetic card reader 1. For example, when a third party exchanges a magnetic head that does not have the unique information 30 or a magnetic head that has unique information that is not paired with the matching unique information 40 stored in the control unit 50, When the magnetic head 6 is disconnected, the magnetic card reader 1 stops the reading function, so that security can be improved.

  In addition, when the magnetic card C is not read by the magnetic head 6, it is periodically determined whether or not the unique information 30 corresponding to the matching unique information 40 stored in the control unit 50 can be received from the magnetic head 6. When the unique information 30 cannot be received, the reading function of the magnetic card reader 1 is stopped. For this reason, even if the reading operation of the magnetic card C is not performed, there is a possibility that the magnetic card reader 1 that may have been improperly replaced such as the replacement of the magnetic head 6 stops the reading function, and the fraud has been performed. The use of a certain magnetic card reader 1 can be prevented in advance, and the security of the magnetic card reader 1 can be improved.

  Further, before reading the magnetic card C by the magnetic head 6, it is determined whether or not the unique information 30 corresponding to the verification unique information 40 stored in the control unit 50 can be received from the magnetic head 6. If it cannot be received, the reading function of the magnetic card reader 1 is stopped. For this reason, before the reading operation is performed, the magnetic card reader 1 that may have been fraudulent such as replacement of the magnetic head 6 stops the reading function, and the magnetic card reader that may have been fraudulent. 1 can be prevented and the security of the magnetic card reader 1 can be improved.

  Further, after the end code E is detected and the conveyance of the magnetic card C is stopped, the magnetic card C is conveyed to the insertion port 16a of the magnetic card reader 1 and ejected, so that the magnetic card C detects the end code E. It is not transported in the reading direction beyond the point. For this reason, when another magnetic head or the like is provided on the downstream side of the magnetic card C reading conveyance direction in the magnetic head 6, the end code E is not conveyed to the position of the other magnetic head or the like. . For this reason, since the other magnetic head or the like cannot read all the card information up to the end code E of the card information, the card information of the magnetic card C is prevented from being read by another magnetic head or the like. The security of the magnetic card reader 1 can be improved.

  Further, in the process of ejecting the magnetic card C after reading the card information of the magnetic card C, the conveyance of the magnetic card C is temporarily stopped. Thus, when a third party or the like arranges another magnetic head or the like in order to steal the card information on the ejection path of the magnetic card C, the other magnetic head or the like temporarily transfers the magnetic card C. The card information cannot be read continuously due to the stop. Accordingly, the card information read by the other magnetic head or the like becomes discontinuous card information, and the card information cannot be read correctly. The security of the reader 1 can be improved.

In addition, the said embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said embodiment.
For example, in the above embodiment, the data area D stores a start code F indicating the start of card information and an end code E indicating the end of card information, and the code detection unit 54 detects the end code E. Although it has been described that the conveyance of the magnetic card C is immediately stopped at the time, the present invention is not limited to this. For example, in a magnetic card in which the start code F and the end code E are not stored, the end of the card information may be detected as the end of the card information, and the conveyance of the magnetic card C may be stopped immediately.
In the above embodiment, the unique information acquisition unit 55 periodically acquires the unique information 30 and also acquires the unique information 30 every time before the magnetic head 6 reads the card information. However, the unique information acquisition unit 55 may continuously acquire that the unique information 30 is stored.

Furthermore, in the above embodiment, the magnetic card reader 1 includes the encryption unit 71 and the decryption unit 72, and the card information read by the reading unit 26 is encrypted by the encryption unit 71 and is decrypted by the decryption unit 72. It has been described as being decrypted. The present invention is not limited to this, and the encryption unit 71 and the decryption unit 72 are not provided in the magnetic card reader, and the encryption and decryption may not be performed.
In the above embodiment, the magnetic card C is a credit card, and the magnetic card reader 1 has been described as being embedded in the front of a vending machine or the like that can be settled with a credit card. The present invention is not limited to this. For example, the magnetic card C may be a card key of a condominium or a hotel door, and the magnetic card reader 1 may be disposed on these doors. Further, a unit of the magnetic card reader 1 may be provided around a cash register such as a store to read a credit card or the like. Of course, other detailed configurations of the magnetic card reader 1 can be arbitrarily changed.

It is a top view which shows the structure of the magnetic card reader which concerns on embodiment of this invention. It is a perspective view of a magnetic card reader. It is a functional block diagram of a magnetic head and a control part. It is the top view which showed the conveyance state of the magnetic card.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Magnetic card reader 2 Housing | casing 3a, 3b Conveyance roller 5 Conveyance motor 6 Magnetic head 26 Reading part 29, 53 Memory 30 Specific information 40 Specific information for collation 50 Control part 51 CPU
52 Motor Drive Circuit 54 Code Detection Unit 56 Validity Determination Unit B Magnetic Stripe C Magnetic Card E End Code

Claims (4)

In a magnetic card reader that reads information stored in a magnetic stripe of a magnetic card inserted from an insertion slot with a magnetic head,
When reading information with the magnetic head, if the end of the information is detected, the card head is immediately stopped .
The magnetic head and the control unit that receives the information read by the magnetic head each store unique information corresponding to each other,
The control unit periodically acquires the unique information of the magnetic head, and when the insertion of the magnetic card is detected before the information of the magnetic card is read by the magnetic head. The unique information is acquired every time, and it is determined whether the specific information corresponding to the unique information of the control unit can be received from the magnetic head for each periodic acquisition or for each acquisition. If the controller determines that the unique information of the magnetic head cannot be received, stopping the reading function ;
Magnetic card reader characterized by.   2. The magnetic card reader according to claim 1, wherein the end of the information is detected by reading an end code of a data area in the magnetic stripe. Stopping the card transport with the end of the information, transporting the magnetic card to the insertion slot of the magnetic card and discharging it,
The magnetic card reader according to claim 1 or 2 . After stopping the card transport with the end of the information,
Temporarily stopping the conveyance of the magnetic card in the process of conveying and discharging the magnetic card ;
Magnetic Kadori over Da according to any one of claims 1 to 3, characterized in.

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