JP6377542B2 - Card processing device - Google Patents

Description

  The present invention relates to a card processing apparatus.

  The card processing device is mounted on an automated transaction machine (hereinafter also simply referred to as ATM) or an automatic cash dispenser (hereinafter also simply referred to as CD), and is widely spread. In ATM and CD, various payments such as payment are made using a magnetic card as a medium, and the card processing device reads magnetic information written on the magnetic card while conveying the magnetic card inserted from the card insertion slot. In recent years, an unauthorized device equipped with a fake card insertion slot, a card holding mechanism, and a magnetic information illegal read head has been used in a card processing apparatus so that the fake card insertion slot and the regular card insertion slot are continuous. There have been reports of fraud (skimming), which is attached to the front and illegally reads the magnetic information on the magnetic card. In order to avoid skimming, it is beneficial to obstruct the reading of magnetic information, and in the card processing apparatus, a magnetic field for obstructing the reading of magnetic information (hereinafter simply referred to as an interfering magnetic field) in the vicinity of the card insertion slot of the apparatus. Has been proposed to prevent illegal reading of magnetic information (Patent Document 1).

JP 2005-266999 A

  Although the magnetic information reading disturbing method proposed in the above patent document can change the frequency and magnetic force that generate the disturbing magnetic field, the disturbing magnetic field extends the magnetic field lines parallel to the magnetic card transport path. Therefore, the following improvements for illegal reading devices have been requested.

  Many unauthorized reading devices have only one unauthorized reading head used for skimming. In order to prevent such unauthorized reading equipment from being read, it is beneficial to expose the unauthorized read head to a disturbing magnetic field with as much magnetic field strength as possible. However, in the existing read disturbing method, the magnetic lines of force are extended in parallel to the magnetic card transport path, so even if an unauthorized read head can be exposed to the disturbing magnetic field, it is only in a region where the magnetic field strength is low. In some cases, an unauthorized read head is only exposed to a disturbing magnetic field. For these reasons, there has been a demand for a new reading disturbing method that can more effectively interfere with information reading for an unauthorized reading device having only one unauthorized reading head.

  In recent years, a fraudulent reading device called a stereo skimmer has been reported in which a read head used for skimming is arranged vertically opposite to a magnetic card. In this stereo skimmer, the output difference between the upper and lower read heads is used for magnetic information reading. To do. In the magnetic information reading disturbing technique proposed in the above patent document, the frequency and magnetic force for generating the disturbing magnetic field can be changed. However, the disturbing magnetic field affects the upper and lower read heads in the illegal reading device while extending the magnetic field lines parallel to the magnetic card transport path. Acts almost equally on the read head. For this reason, even with a disturbing magnetic field whose frequency and magnetic force have been changed, the disturbing action due to the disturbing magnetic field can be canceled by the upper and lower read heads. It lacks the effectiveness of information reading interference. For this reason, a new reading disturbing method capable of dealing with stereo skimmers has been requested.

SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms. The form of the present invention is:
A card processing device for processing a magnetic card,
A magnetic field generating coil provided in the vicinity of a conveyance path for conveying the magnetic card from the insertion slot of the magnetic card;
A magnetic field generating oscillating unit that generates a magnetic field reaching the outside of the insertion port from the magnetic field generating coil;
A posture changing unit that changes the posture of the magnetic field generating coil that generates the magnetic field.

The card processing device of the above form can change the direction of the magnetic field reaching the outside of the insertion slot in accordance with the change in the attitude of the magnetic field generating coil that generates the magnetic field, so that foreign matter outside the insertion slot can be removed with high magnetic field strength. Increased freedom of exposure to magnetic fields. Therefore, even if an illegal reading device having an illegal reading head arrangement position is mounted outside the insertion slot, the magnetic field generating coil posture is set so that the magnetic field lines individually interfere with the illegal reading heads having different positions. Can be changed. As a result, according to the card processing apparatus of the above aspect, the unauthorized reading head can be exposed to the disturbing magnetic field with a strong magnetic field strength regardless of the arrangement position thereof. In addition to enhancing the effect of obstructing the reading of information, the versatility of unauthorized devices with different positions of the unauthorized read head is also increased. Further, even if a stereo skimmer type illegal reading device having an upper reading head and a lower reading head arranged vertically opposite to the magnetic card is mounted outside the insertion slot, the upper reading head and the lower reading head The head can be exposed to a disturbing magnetic field in which the direction in which the magnetic lines of force extend with respect to the transport path changes in the degree of inclination relative to the transport path. For this reason, the upper read head and the lower read head are exposed to a disturbing magnetic field having different magnetic field strengths by changing the posture of the magnetic field generating coil, so that the disturbing action due to the disturbing magnetic field is different between the upper read head and the lower read head. Thus, it is possible to make it difficult for the upper read head and the lower read head to cancel the disturbing action caused by the disturbing magnetic field. As a result, according to the card processing device of the above aspect, the obstruction effect of illegal magnetic information reading by the stereo skimmer type illegal reading device is enhanced. In this case, it is more preferable to repeat the posture change of the magnetic field generating coil.
Note that the magnetic head included in the card processing device of the above-described form can be disposed at a distance from the magnetic field generating coil that is difficult to be influenced by the magnetic field for disturbing the magnetic field generating coil. I can not. Alternatively, since it is possible to read in advance assuming a change in the disturbing magnetic field accompanying a change in the attitude of the magnetic field generating coil, there is no problem in reading the magnetic information in the magnetic head of the card processing device of the above-described form.
Problems other than those described above, and configurations and effects for solving the problems will be clarified by the following description of embodiments.

It is explanatory drawing which shows schematic structure of the card processing apparatus 1 of 1st Embodiment. It is explanatory drawing which expands and shows roughly the principal part structure seeing the periphery of the card insertion slot 2 of the card processing apparatus 1 from the A direction in FIG. 2 is a block diagram schematically showing an electrical configuration of the card processing apparatus 1. FIG. It is a flowchart which shows the control procedure of the first half of fraud countermeasure control. It is explanatory drawing supposing the case where the unauthorized reading apparatus FS is mounted in front of the card insertion slot 2. It is explanatory drawing supposing the case where the unauthorized reading apparatus FS from which the arrangement | positioning position of the unauthorized reading head FH differs is mounted in front of the card insertion slot 2. FIG. It is explanatory drawing supposing the case where the stereo skimmer type unauthorized reading apparatus FS is mounted | worn. It is explanatory drawing which shows typically the oscillation status transition of the oscillator 17v when the unauthorized reading apparatus FS is mounted | worn. It is explanatory drawing which shows the mode of generation | occurrence | production of the magnetic field 14a for interference when the unauthorized reading apparatus FS shown in FIG. 6 is mounted | worn. It is a flowchart which shows the control procedure of the latter half of fraud control control with respect to the stereo skimmer type fraudulent reading apparatus FS. It is explanatory drawing which shows the mode of generation | occurrence | production of the magnetic field 14a for interference when the stereo skimmer type unauthorized reading apparatus FS shown in FIG. 7 is mounted | worn. It is explanatory drawing which shows the relationship between the read head of the unauthorized reading device FS and the magnetic card C together with the interfering magnetic field 14a when an affirmative determination is made that a card has been inserted. It is explanatory drawing which shows the relationship between the read head of the unauthorized reading device FS and the magnetic card C in the state in which the inclination posture of the magnetic field generating coil 14c is changed, together with the magnetic field for interference 14a. It is a flowchart which shows the control procedure of fraud countermeasure control in the card | curd processing apparatus 1A of 2nd Embodiment with respect to the stereo skimmer type fraud reader FS. It is explanatory drawing which shows the relationship between the read head of the unauthorized reading device FS and the magnetic card C in a state where the tilting posture of the magnetic field generating coil 14c is continuously changed and the disturbance magnetic field 14a. It is explanatory drawing which shows the 1st rocking | fluctuation pattern at the time of rocking | fluctuating the magnetic field generation coil 14c repeatedly. It is a flowchart which shows the control procedure of the fraud countermeasure control in 3rd Embodiment with respect to the stereo skimmer type fraudulent reading apparatus FS. It is explanatory drawing which shows the magnetic field generation 1st pattern which made magnetic field intensity | strength, a magnetic field generation frequency, and an interval constant. It is explanatory drawing which shows the 2nd magnetic field generation | occurrence | production pattern which changed magnetic field strength and the magnetic field generation frequency, and changed the interval. It is explanatory drawing which shows the magnetic field generation 3rd pattern which changed the magnetic field intensity | strength, the wave number, and the interval, making a magnetic field generation frequency constant. It is explanatory drawing which shows the magnetic field generation | occurrence | production 4th pattern which changed the magnetic field intensity | strength and the magnetic field generation frequency with the interval constant. It is a flowchart which shows the control procedure of the fraud countermeasure control in 4th Embodiment with respect to the stereo skimmer type fraudulent reading apparatus FS. It is explanatory drawing which shows schematic structure of coil unit 14A of 4th Embodiment. It is explanatory drawing which shows roughly the schematic structure of the card processing apparatus 1B of 5th Embodiment with the principal part structure of the card slot 2 seen from the A direction. It is explanatory drawing which shows roughly the structure of the coil unit 14C of 6th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a schematic configuration of the card processing device 1 according to the first embodiment, and FIG. 2 is an enlarged view of the main configuration when the periphery of the card insertion slot 2 of the card processing device 1 is viewed from the direction A in FIG. It is explanatory drawing shown roughly. The card processing device 1 is mounted on an ATM or CD, which is a host device, and is electrically connected to the ATM or CD. The card processing device 1 reads magnetic information recorded on the magnetic card C (specifically, magnetic data written on the magnetic stripe), and transmits the read magnetic information to the ATM or CD.

  As shown in the figure, the card processing apparatus 1 includes a housing 1a, a card insertion port 2 provided at an end of the housing 1a, a transport path Cp from the card insertion port 2 to the inside of the housing 1a, and a magnetic head 3. The stripe detection sensor 4, the shutter 5, the first to third transport roller pairs 6a to 6c, the first to third card position sensors 8a to 8c, the card insertion sensor 9, and the coil unit 14. , A tilting unit 15 (see FIG. 2), a disturbing magnetic field generation unit 16, a metal foreign object detection circuit unit 17, and a control device 200 described later. An insertion slot body portion 2v surrounding the card insertion slot 2 is incorporated in the front panel FP of the host device, opens the card insertion slot 2, and accommodates a coil unit 14 to be described later.

  The transport path Cp is a card transport path from the card insertion slot 2 to the magnetic head 3. The card insertion slot 2 is an insertion slot into which the magnetic card C storing magnetic information is inserted, and the magnetic head 3 reads and reads the magnetic information stored in the magnetic card C conveyed and guided by the auxiliary roller 6d. The magnetic information is output to the control device 200 described later. Specifically, the magnetic head 3 is arranged at a position in contact with the magnetic stripe of the magnetic card C to be conveyed, and reads magnetic data from the magnetic stripe of the magnetic card C. At this time, the magnetic head 3 detects the change in magnetic force of the magnetic stripe by the built-in core and coil, changes it to a change in voltage, amplifies the change in voltage by the built-in amplifier, and outputs it to the control device 200. To do. As shown in FIG. 1, the magnetic head 3 is located at the rear side of the casing, which is far away from the magnetic field generating coil 14c described later, that is, the path end side of the conveying path Cp. The magnetic field lines of the working magnetic field do not reach the magnetic head 3. Therefore, the magnetic head 3 reads the magnetic information of the magnetic card C that has been conveyed without any trouble.

  The stripe detection sensor 4 is composed of, for example, a magnetic head, detects whether or not the magnetic card C is inserted into the card insertion slot 2, and outputs the detection result to the control device 200. The shutter 5 closes the conveyance path Cp over a period in which the stripe detection sensor 4 does not detect the magnetic card C. When the insertion of the magnetic card C is detected by the stripe detection sensor 4, the shutter 5 is retracted to the position shown in FIG. Then, delivery of the magnetic card C to the first transport roller pair 6a in the transport path Cp is permitted.

  Each of the first to third transport roller pairs 6a to 6c is provided in a pair of upper and lower sides across the transport path Cp, and receives the driving force of the card transport motor 25 that is driven and controlled by the control device 200. Rotate. The first to third transport roller pairs 6a to 6c transport the magnetic card C in the forward direction F from the card insertion port 2 to the magnetic head 3 by the normal rotation drive of the card transport motor 25, and the card transport motor. The magnetic card C is conveyed in the backward direction B from the magnetic head 3 toward the card insertion slot 2 by the reverse drive of 25.

  The first to third card position sensors 8a to 8c are, for example, photo interrupters, and detect the position of the magnetic card C in the transport path Cp. The first card position sensor 8a is disposed at a read preparation position where the magnetic card C is made to wait before reading data from the magnetic card C, and the magnetic card C is conveyed in the return path direction B to this position. , The rear end of the magnetic card C is detected. The second card position sensor 8b is arranged at a reading start position where the magnetic head 3 starts reading data from the magnetic card C. When the magnetic card C is conveyed in the forward direction F and reaches this position, the magnetic card C The leading end of the card C is detected. The third card position sensor 8c is arranged at a reading end position where the reading of data from the magnetic card C by the magnetic head 3 is finished. When the magnetic card C is conveyed in the forward direction F and reaches this position, the magnetic card C The leading end of the card C is detected.

  When information is read from the magnetic card C conveyed in the forward direction F, the reading start position is the reading start position where the information reading is started, and the reading end position is the information reading end. This is the reading end position. When reading information with respect to the magnetic card C conveyed in the backward direction B, the reading start position is the reading start position where the information reading is started, and the preparation position is the reading end where the information reading is ended. Position.

  The card insertion sensor 9 is a sensor that detects the insertion side end of the magnetic card C and detects that the magnetic card C has been inserted into the card insertion slot 2, and the first to third card position sensors 8a to 8c. Like this, it is composed of photo interrupters. This card insertion sensor 9 is used in fraud countermeasure control described later. The card insertion sensor 9 may be configured as a mechanical switch.

  The coil unit 14 is located in the vicinity of the card insertion slot 2 as shown in FIG. 1, and includes a magnetic field generating coil 14c and a coil holder 14h as shown in FIG. The magnetic field generating coil 14c is wound so as to surround the conveyance path Cp of the magnetic card C from the card insertion slot 2 to the magnetic head 3 on the card insertion slot 2 side, and is accommodated in the coil holder 14h in this state. And fixed with resin. In addition, the coil unit 14 includes a rotating shaft 14s protruding from the left and right ends of the coil holder 14h in FIG. 2, that is, the left side and the right side of the card insertion slot 2, and this rotating shaft 14s is shown in FIG. As shown in FIG. 4, the insertion port body portion 2v is incorporated so as to overlap the conveyance path Cp. When such a coil unit 14 is assembled, the rotating shaft 14s is pivotally supported by a pivotal support portion 14j on the insertion port body portion 2v side.

  The coil unit 14 held in this way causes the magnetic field generating coil 14c surrounding the conveyance path Cp to be conveyed on a vertical plane (the plane in FIG. 1 or the plane orthogonal to the plane in FIG. 2) along the conveyance path Cp. It is held so as to be able to swing so as to be inclined with respect to Cp, and the posture of the magnetic field generating coil 14 c is changed as the coil unit 14 swings. To explain this relationship in relation to the rotation shaft 14s, the coil unit 14 holds the magnetic field generating coil 14c that surrounds the conveyance path Cp by the rotation axis 14s that intersects the vertical plane, thereby causing the coil unit 14 to move along the conveyance path Cp. It is held so as to be swingable so as to be inclined with respect to the transport path Cp in the vertical plane along. In the first embodiment, the card processing apparatus 1 holds the coil unit 14 so as to be swingable at a swing angle θm in the range of 30 degrees to 40 degrees on the vertical plane as shown in FIG. During the power-off period or during card insertion standby, the card processing apparatus 1 causes the coil normal line 14ch to coincide with or be parallel to the coil path 14 as shown in the initial coil position of FIG. To hold.

  The inclination unit 15 includes a motor 15a, a reduction gear head 15b, and an encoder 15c, and the gear head 15b is directly connected to the rotating shaft 14s of the coil unit 14. And this inclination unit 15 drives the motor 15a forward / reversely under the control of the control device 200 which will be described later, so that the magnetic field generating coil 14c of the coil unit 14 is moved to the transport path Cp on the vertical plane along the transport path Cp. Swing or tilt to tilt. Further, the tilting unit 15 stops the swinging or tilting of the magnetic field generating coil 14c by rotating and stopping the motor 15a under the control of the control device 200 that has obtained the rotational position information from the encoder 15c, thereby The generating coil 14c is held in the inclined posture at the time of stopping. For these reasons, the tilting unit 15 forms a posture changing unit and a coil posture holding unit in the present application in cooperation with the control device 200 described later.

  As shown in FIG. 1, the interfering magnetic field generation unit 16 and the metal foreign object detection circuit unit 17 are connected from the coil unit 14 (specifically, the magnetic field generation coil 14c) via a switch 21 that is driven under the control of the control device 200. It is connected to the extended lead wiring 20. The interfering magnetic field generator 16 includes an oscillator 16v (see FIG. 3), and a reading interfering magnetic field (interfering magnetic field 14a) corresponding to the frequency oscillated by the oscillator 16v is applied to the magnetic field generating coil 14c of the coil unit 14. generate. The metallic foreign object detection circuit unit 17 includes an oscillator 17v (see FIG. 3), and generates a magnetic field having a constant frequency (high frequency magnetic field 14b) belonging to a high frequency range oscillated by the oscillator 17v in the magnetic field generating coil 14c of the coil unit 14. Let Although the interference magnetic field 14a and the high-frequency magnetic field 14b are different in magnetic force, the extension of the lines of magnetic force is not so different.

  Next, the electrical configuration of the card processing apparatus 1 will be described. FIG. 3 is a block diagram schematically showing the electrical configuration of the card processing apparatus 1. As shown in the figure, the card processing device 1 is connected to the control device 200 in addition to the card detection unit including the magnetic head 3, the stripe detection sensor 4, and the first to third card position sensors 8 a to 8 c described above. The magnetic field generation unit 16, the metal foreign object detection circuit unit 17, the switch 21 and the like are connected and provided. The control device 200 is configured as a so-called computer including a CPU, a ROM, and a RAM that execute a logical operation, and comprehensively controls the card transport motor 25, the shutter solenoid 5s for driving the shutter, and the like in the card processing device 1. Specifically, the control device 200 controls the driving of the shutter 5 based on the sensor signal of the stripe detection sensor 4 and the card transport motor 25 based on the sensor signals of the first to third card position sensors 8a to 8c. Card conveyance control by control and fraud countermeasure control using the coil unit 14 and the inclination unit 15 are performed. Further, the control device 200 is connected to a host device HC such as ATM via the communication unit 210, and transmits the magnetic data of the magnetic card C read by the magnetic head 3 to the host device HC.

  Next, fraud countermeasure control executed by the control device 200 of the card processing device 1 will be described. FIG. 4 is a flowchart showing a control procedure in the first half of the fraud countermeasure control. The fraud countermeasure control can be repeatedly executed every predetermined time, and can be executed every time a user who desires a transaction with the magnetic card C is detected on the front side of the front panel FP in FIG. When the fraud countermeasure control is executed, the control device 200 first generates the high-frequency magnetic field 14b having a constant frequency (hereinafter simply referred to as a high frequency) in the high-frequency region using the metal foreign object detection circuit unit 17, and the coil. The unit 14 is tilted (step S100). When generating the high-frequency magnetic field 14 b, the control device 200 switches the switch 21 to the metal foreign object detection circuit unit 17, connects the magnetic field generation coil 14 c to the metal foreign object detection circuit unit 17, and also detects the metal foreign object detection circuit unit 17. A drive signal is output to the oscillator 17v, and the oscillator 17v oscillates in a high frequency range. Thereby, the magnetic field generating coil 14 c of the coil unit 14 generates a high frequency magnetic field 14 b and extends the high frequency magnetic field 14 b to the front side of the card insertion slot 2. When the coil unit 14 is tilted, the control device 200 outputs a drive signal to the motor 15a of the tilt unit 15, and for example, the coil unit 14 swings with the initial coil position shown in FIG. After being tilted at a constant speed toward one end side, it is tilted at a constant speed from the one end side toward the other end side. Thereby, the magnetic field generating coil 14c is tilted in the range of the swing angle θm (see FIG. 1) with respect to the transport path Cp on the vertical plane along the transport path Cp while generating the high-frequency magnetic field 14b.

  In a state where the magnetic field generating coil 14c generating the high-frequency magnetic field 14b is tilted with respect to the transport path Cp in the vertical plane along the transport path Cp by step S100, the unauthorized reading device is placed outside the card insertion slot 2. Is not mounted, the oscillation state of the oscillator 17v that generates the high-frequency magnetic field 14b in the magnetic field generating coil 14c is in a steady state. This steady state is a state assuming that a magnetic field attenuating material having metal parts such as the stripe detection sensor 4 and the shutter 5 that the card processing apparatus 1 originally has is disposed around the coil unit 14. However, when an illegal reading device is mounted outside the card insertion slot 2, the oscillation state of the oscillator 17v is as follows. FIG. 5 is an explanatory diagram assuming that the unauthorized reading device FS is mounted in front of the card insertion slot 2. FIG. 6 shows the unauthorized reading device FS in which the unauthorized reading head FH is disposed at the card insertion slot 2. FIG. 7 is an explanatory diagram assuming that a stereo skimmer type unauthorized reading device FS is mounted, and FIG. 8 is an explanatory diagram illustrating the case where the unauthorized reading device FS is installed. It is explanatory drawing which shows typically the oscillation status transition of the oscillator 17v at the time of mounting | wearing.

  The unauthorized reading device FS illustrated in FIG. 5 includes the unauthorized reading head FH separated from the front panel FP by a distance L1, and the unauthorized reading device FS illustrated in FIG. 6 includes the unauthorized reading head FH greater than the distance L1 from the front panel FP. Provide L2 apart. As described above, the unauthorized reading device FS used by an unauthorized person who intends to read unauthorized information is not uniform, and the position of the unauthorized reading head FH is often different. The existing reading disturbing method lacks consideration for these points, whereas the card processing apparatus 1 according to the first embodiment is capable of dealing with disturbing in consideration of the difference in the position of the unauthorized reading head FH as described below. It becomes possible.

  Since the unauthorized reading head FH included in the unauthorized reading device FS shown in FIGS. 5 and 6 is a magnetic field attenuating material having metal parts, the unauthorized reading head FH is exposed to the magnetic field of the high-frequency magnetic field 14b to generate an eddy current. The eddy current generated in the unauthorized reading head FH causes an energy loss of the high-frequency magnetic field 14b to which the unauthorized reading head FH is exposed, and the timing at which this loss occurs depends on the position (distances L1, L2) of the unauthorized reading head FH. Determined. Due to such energy loss, water content exceeding a predetermined level of oscillation of the oscillator 17v occurs and the oscillation is attenuated or stopped, so that the impedance of the oscillation circuit in the oscillator 17v changes. The control device 200 monitors the impedance change in the oscillator 17v after the execution of step S100, and the obtained impedance change matches the timing of energy loss accompanying the generation of eddy current. In each figure of FIG. 8, such an impedance change is shown in association with a coil angle with respect to the conveyance path Cp. In FIG. 8, the steady state is indicated by a linear locus. This is due to the standardization assuming that the stripe detection sensor 4 and the like have already been arranged around the card insertion slot 2. .

  Since the unauthorized reading device FS of FIG. 6 includes the unauthorized reading head FH separated from the front panel FP by a large distance L2, the attenuation of the impedance is observed when the magnetic field generating coil 14c of the coil unit 14 is inclined at a small angle θ2. . On the other hand, in the illegal reading device FS of FIG. 5 provided with the illegal reading head FH close to the front panel FP, the attenuation of the impedance is observed after the magnetic field generating coil 14c of the coil unit 14 is inclined at an angle θ1 larger than the angle θ2. It is done. In FIG. 8A, for the illegal reading device FS (see FIG. 6) having the illegal reading head FH at the distance L2, the attenuation stops at the angle θ21 and the attenuation improves at the angle θ22. It was. The same applies to the illegal reading device FS (see FIG. 5) having the illegal reading head FH at the distance L1.

  The stereo skimmer type unauthorized reading device FS shown in FIG. 7 includes an upper unauthorized reading head FHu and a lower unauthorized reading head FHd which are vertically opposed to the magnetic card C inserted into the card insertion slot 2 of the card processing apparatus 1. And have. Therefore, in the stereo skimmer type unauthorized reading device FS having the upper and lower unauthorized reading heads, the state of the eddy current generated when both these reading heads are exposed to the high-frequency magnetic field 14b is shown in FIG. 5 and FIG. And clearly different. FIGS. 8B and 8C show examples of impedance changes when the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the stereo skimmer type unauthorized reading device FS are exposed to the high-frequency magnetic field 14b. Show. Since the control device 200 stores each pattern of the impedance change shown in FIG. 8, by monitoring the circuit impedance change of the oscillator 17v of the metal foreign object detection circuit unit 17 that generates the high-frequency magnetic field 14b, it is illegally performed. It is possible to identify whether the mounted unauthorized reading device FS is a type having one unauthorized reading head FH or a stereo skimmer type. Note that although the stereo skimmer type unauthorized reading device FS is different in impedance change as shown in FIGS. 8B and 8C, the upper unauthorized reading head FHu and the lower unauthorized reading head FHd are large. Due to the difference in sheath arrangement.

  Based on such knowledge, in the card processing device 1 of the first embodiment, the control device 200 determines whether or not the oscillation of the oscillator 17v is attenuated or stopped based on the impedance change in step S110 following step S100. If it is determined that there is no change in impedance, that is, the oscillation state of the oscillator 17v is in a steady state, the control device 200 once ends this routine without performing any processing. On the other hand, if it is determined in step S110 that the oscillation 17v is attenuated or stopped, the control device 200 determines that the observed oscillation is attenuated or stopped when the stereo skimmer type unauthorized reading device FS is attached. It is determined whether or not it is caused (step S115). Here, if an affirmative determination is made, the control device 200 proceeds to a stereo skimmer countermeasure process described later. If a negative determination is made, the control device 200 stops output of the drive signal to the motor 15a of the tilt unit 15 to stop the motor, and the coil unit. 14 holds the inclined posture of the magnetic field generating coil 14c (step S120). As a result, the magnetic field generating coil 14c of the coil unit 14 stops in the tilted posture at the time when the attenuation or stop of oscillation is observed in step S110. That is, if the unauthorized reading device FS shown in FIG. 5 is mounted, the magnetic field generating coil 14c of the coil unit 14 is inclined at an angle θ1 shown in the drawing and stopped. If the unauthorized reading device FS shown in FIG. 6 is mounted, the magnetic field generating coil 14c of the coil unit 14 stops at an angle of the angle θ2 shown in the drawing. As a result, the magnetic field generating coil 14c in which the tilted posture is maintained faces in the direction in which the unauthorized reading head FH can be exposed to the magnetic field with the maximum magnetic field strength even if the position of the unauthorized reading head FH of the unauthorized reading device FS is different. It will be.

  Next, the control device 200 causes the interfering magnetic field generator 16 to generate the interfering magnetic field 14a from the magnetic field generating coil 14c (step S130). FIG. 9 is an explanatory diagram showing how the interference magnetic field 14a is generated when the unauthorized reading device FS shown in FIG. 6 is mounted. As shown in the figure, when generating the interference magnetic field 14a, the control device 200 switches the switch 21 to the interference magnetic field generation unit 16 side to connect the magnetic field generation coil 14c to the interference magnetic field generation unit 16, and this interference The interference magnetic field 14a is generated from the magnetic field generation coil 14c by the magnetic field generator 16. By doing so, the magnetic field that has been generated from the magnetic field generating coil 14c until then is switched from the high-frequency magnetic field 14b to the interference magnetic field 14a. The same applies when the unauthorized reading device FS shown in FIG. 5 is mounted. Thereby, even if the position of the unauthorized reading head FH of the unauthorized reading device FS is different as shown in FIGS. 5 and 6, the magnetic field generating coil 14c exposes the unauthorized reading head FH to the disturbing magnetic field 14a with the maximum magnetic field strength. It will be. In this case, the control device 200 continuously generates the interfering magnetic field 14a from the magnetic field generating coil 14c for a time period during which it is assumed that unauthorized information reading is performed by the unauthorized reading head FH. In this way, when generating the interfering magnetic field 14a, the frequency pattern and waveform of the interfering magnetic field 14a can be a sine wave waveform, a rectangle, or the like, as in the existing method.

  Next, the control device 200 reports (transmits) to the higher-level device HC that there has been an unauthorized act of mounting the unauthorized reading device FS (step S140), and ends this routine. It should be noted that the above fraud countermeasure control is executed both when the illegal reading device FS is attached and the magnetic card C is not inserted, and when the magnetic card C is actually inserted. In the former case, in step S140, the report indicating that the unauthorized reading device FS has been detected is stopped. In the latter case, in addition to the report indicating that the unauthorized reading device FS is detected, the unauthorized reading device FS is installed. Then, since the magnetic card C is actually inserted into the card insertion slot 2, it may be reported that an illegal reading action has actually been made.

  Next, a description will be given of a case where an affirmative determination is made that the oscillation attenuation or stop observed in step S110 is caused by the attachment of the stereo skimmer type unauthorized reading device FS. FIG. 10 is a flowchart showing a control procedure in the latter half of the fraud countermeasure control for the stereo skimmer type unauthorized reading device FS. As shown in the figure, even when dealing with the stereo skimmer type unauthorized reading device FS, the control device 200 first stops the output of the drive signal to the motor 15a of the tilt unit 15 to stop the motor, The inclination posture of the magnetic field generating coil 14c in the coil unit 14 is maintained (step S200). As a result, the magnetic field generating coil 14c of the coil unit 14 stops in the inclined posture at the time of observing the attenuation or stop of oscillation in step S110, and when the unauthorized reading device FS shown in FIG. 7 is mounted. Inclination is stopped at an angle θ3 (see FIGS. 8A and 8B). As a result, the magnetic field generating coil 14c in which the tilted posture is maintained is obtained by using both of the unauthorized reading heads of the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the stereo skimmer type unauthorized reading device FS, or at least one of the unauthorized reading heads. In a direction that can be exposed to the interfering magnetic field 14a with the maximum magnetic field strength. In addition, the magnetic field generating coil 14c in which the tilted posture is maintained is such that the direction in which the magnetic lines of force extend with respect to the transport path Cp between the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the stereo skimmer type unauthorized reading device FS. Exposure to the disturbing magnetic field 14a.

  Next, the control device 200 causes the interfering magnetic field generator 16 to generate the interfering magnetic field 14a from the magnetic field generating coil 14c (step S210). FIG. 11 is an explanatory diagram showing how the interference magnetic field 14a is generated when the stereo skimmer type unauthorized reading device FS shown in FIG. 7 is attached. As shown in the figure, when generating the interference magnetic field 14a, the control device 200 switches the switch 21 to the interference magnetic field generation unit 16 side to connect the magnetic field generation coil 14c to the interference magnetic field generation unit 16, and this interference The interference magnetic field 14a is generated from the magnetic field generation coil 14c by the magnetic field generator 16. By doing so, the magnetic field that has been generated from the magnetic field generating coil 14c until then is switched from the high-frequency magnetic field 14b to the interference magnetic field 14a. As a result, the magnetic field generating coil 14c interferes with both the unauthorized reading heads of the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the stereo skimmer type unauthorized reading device FS or at least one of the unauthorized reading heads with the maximum magnetic field strength. The magnetic field 14a is exposed.

  Next, the control device 200 determines whether or not the magnetic card C has been inserted into the card insertion slot 2 based on the output of the card insertion sensor 9 (step S220). Here, if a negative determination is made that the magnetic card C has not been inserted, the control device 200 reports that the host device HC has performed an illegal act (step S240), and ends this routine. A negative determination in step S220 is made if the output of the card insertion sensor 9 remains off for a predetermined time from the time point when oscillation attenuation or stop is observed in step S110 of FIG. The predetermined time in this case is defined as the time when the inserted magnetic card C is naturally expected to reach the card insertion slot 2 of the card processing apparatus 1 with the insertion of the magnetic card C into the illegal reading device FS. ing. Then, the fraud report in step S240 following the negative determination in step S220 is a report that the attachment of the illegal reading device FS is detected.

  On the other hand, if the determination in step S220 is affirmative that a card has been inserted, the control device 200 swings the magnetic field generating coil 14c of the coil unit 14 that has been inclined at the angle θ3 of FIG. The tilt posture is changed by moving (step S230). FIG. 12 is an explanatory diagram showing the relationship between the read head of the unauthorized reading device FS and the magnetic card C together with the interfering magnetic field 14a when an affirmative determination is made that a card has been inserted, and FIG. 13 shows the inclination posture of the magnetic field generating coil 14c. It is explanatory drawing which shows the relationship between the reading head of the unauthorized reading device FS in the changed state and the magnetic card C together with the magnetic field for interference 14a.

  As shown in FIG. 12, when a card is inserted into the card insertion slot 2, the preamble zone on the insertion end side of the inserted magnetic card C is already in the upper illegal reading head FHu of the illegal reading device FS and the lower illegal fraud. It passes through the reading head FHd. Therefore, the upper side illegal reading head FHu and the lower side illegal reading head FHd of the illegal reading device FS have already read the magnetic information in the preamble zone, but this reading is performed on the interfering magnetic field 14a with the maximum magnetic field strength. It is made in a state where is exposed. The magnetic card C is inserted further into the card insertion slot 2 from the state shown in FIG. Then, as shown in FIG. 13, the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the unauthorized reading device FS generate a disturbing magnetic field 14 a generated by the magnetic field generating coil 14 c whose inclination is changed from the angle θ3 to the angle θ4. Thus, the magnetic field strength received by both the upper and lower unauthorized reading heads FHu and FHd is different from the magnetic field strength until the magnetic card C is inserted into the card insertion slot 2. . In generating the disturbing magnetic field 14a in step S210 prior to the change of the tilt attitude (step S230), the swinging of the tilt attitude of the magnetic field generating coil 14c is changed in step S230 after the generation of the disturbing magnetic field. Similarly to sine wave waveform, rectangular shape, etc.

  Subsequent to step S230, the control device 200 reports (transmits) to the host device HC that there has been an illegal act of mounting the illegal reading device FS (step S240), and ends this routine. The fraud report in step S240 following step S230 is a report that fraudulent reading was actually performed because the magnetic card C was actually inserted into the card insertion slot 2 after the illegal reading device FS was mounted. Become.

  According to the card processing device 1 of the first embodiment having the configuration described above, the following effects are obtained. The card processing apparatus 1 of the first embodiment generates a high-frequency magnetic field 14b from the magnetic field generating coil 14c of the coil unit 14 surrounding the transport path Cp (Step S100; FIGS. 5 to 7). Then, the card processing device 1 of the first embodiment tilts the magnetic field generating coil 14c generating the high-frequency magnetic field 14b with respect to the transport path Cp on the vertical plane along the transport path Cp (Step S100; 5 to 7). In the situation where the magnetic field generating coil 14c generating the high frequency magnetic field 14b is tilted as described above, the high frequency magnetic field 14b is applied to the magnetic field generating coil 14c unless an illegal reading device is mounted outside the card insertion slot 2. The oscillation state of the generated oscillator 17v (FIG. 3) is in a steady state assuming that a magnetic field attenuating material having metal parts such as the stripe detection sensor 4 and the shutter 5 has already been disposed around the coil unit 14. .

  However, when the unauthorized reading device FS shown in FIGS. 5 to 7 is mounted outside the card insertion slot 2, the unauthorized reading head FH that is a magnetic field attenuating material having metal parts, the upper unauthorized reading head FHu, and the lower side. The unauthorized reading head FHd is exposed to the high-frequency magnetic field 14b and generates an eddy current, which affects the oscillation state of the oscillator 17v (FIG. 3). The influence of the eddy current varies depending on the magnetic field lines extending in the high-frequency magnetic field 14b and the unauthorized reading head FH or the interference between the upper unauthorized reading head FHu and the lower unauthorized reading head FHd. Are different, or the upper side illegal reading head FHu and the lower side illegal reading head FHd are arranged opposite to each other across the transport path Cp, the way in which the influence of eddy current appears is also different.

  Paying attention to such an event, the card processing device 1 of the first embodiment monitors the impedance change that matches the transition of the oscillation state of the oscillator 17v (FIG. 3) (step S110; FIG. 8). If the impedance change causing attenuation or stop of the oscillation of the oscillator 17v (FIG. 3) is caused by the position of the unauthorized read head FH being different (FIG. 8A), the oscillation of the oscillator 17v (FIG. 3). When the magnetic field generating coil 14c is detected to be attenuated or stopped, the tilting of the magnetic field generating coil 14c is stopped, and the magnetic field generating coil 14c is held in an inclined posture corresponding to the position of the unauthorized reading head FH (step S120; FIGS. 5 to 6). ). By maintaining such an inclined posture, the card processing apparatus 1 according to the first embodiment causes the magnetic field generating coil 14c to have a magnetic field with the maximum magnetic field strength even if the position of the unauthorized reading head FH of the unauthorized reading device FS is different. Turn to the direction that can be exposed to. Then, the card processing apparatus 1 of the first embodiment generates the disturbing magnetic field 14a from the magnetic field generating coil 14c that has been held in the inclined posture (step S130). As a result, according to the card processing apparatus 1 of the first embodiment, the unauthorized reading head FH can be exposed to the disturbing magnetic field 14a with the maximum magnetic field strength regardless of the arrangement position (FIGS. 5 to 6). In addition to enhancing the effect of obstructing information reading with respect to the illegal reading device FS having only one illegal reading head FH, the versatility is high with respect to the illegal reading device FS in which the arrangement position of the illegal reading head FH is different. Thus, it is possible to secure the information reading interference effect.

  In the card processing device 1 according to the first embodiment, the impedance change that causes the oscillation of the oscillator 17v (FIG. 3) to attenuate or stop is caused by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd being arranged to face each other. If this is the case (FIGS. 8B and 8C), the tilting of the magnetic field generating coil 14c is stopped when the attenuation or stop of the oscillation of the oscillator 17v (FIG. 3) is detected, and this magnetic field generation is performed. The coil 14c is held in an inclined posture with respect to the stereo skimmer type unauthorized reading device FS having the upper unauthorized reading head FHu and the lower unauthorized reading head FHd facing each other (step S200; FIG. 11). The card processing apparatus 1 according to the first embodiment, by maintaining such an inclined posture and the subsequent generation of the interfering magnetic field 14a, allows both the unauthorized reading head FHu and the unauthorized reading head FHd of the unauthorized reading device FS of the stereo skimmer type. The reading head or at least one of the unauthorized reading heads is exposed to the disturbing magnetic field 14a inclined in the direction in which the lines of magnetic force extend with respect to the transport path Cp with the maximum magnetic field strength.

  In addition to this, the card processing device 1 of the first embodiment changes the tilt posture by swinging the magnetic field generating coil 14c generating the interfering magnetic field 14a about the rotation shaft 14s (step S230). FIG. 13), both the illegal reading head FHu and the lower illegal reading head FHd of the stereo skimmer type illegal reading device FS are used as the disturbing magnetic field 14a generated by the magnetic field generating coil 14c whose inclination is changed. Exposure causes a change in the magnetic field strength received by both unauthorized read heads. For this reason, the disturbing action by the disturbing magnetic field 14a can be made different between the upper unauthorized reading head FHu and the lower unauthorized reading head FHd. Therefore, the disturbing action by the disturbing magnetic field is different from that of the upper unauthorized reading head FHu. It is difficult to cancel with the lower unauthorized reading head FHd. As a result, according to the card processing device 1 of the first embodiment, even if the unauthorized reading device FS in the form of the stereo skimmer is mounted outside the card insertion slot 2, the unauthorized reading device FS reads unauthorized magnetic information. Can be prevented.

  The card processing apparatus 1 according to the first embodiment uses the magnetic field generating coil 14c that generates the interfering magnetic field 14a as a trigger when the card insertion sensor 9 detects the insertion of the card into the card insertion slot 2. The magnetic field generating coil 14c is tilted to change the tilt posture, thereby changing the magnetic field strength. Therefore, there are the following advantages. When the magnetic card C is accidentally inserted into the stereo skimmer type unauthorized reading device FS and the magnetic card C is inserted into the card insertion slot 2, the magnetic information in the preamble zone on the insertion end side of the magnetic card C is Already read by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the unauthorized reading device FS, this reading is performed in a state where both unauthorized reading heads are exposed to the disturbing magnetic field 14a with the maximum magnetic field strength. . Therefore, the stereo skimmer type unauthorized reading device FS cancels the reading disturbance due to magnetism accompanying the reading of magnetic information in the preamble zone with the interference magnetic field 14a having the maximum magnetic field strength. Since the magnetic card C is inserted further into the card insertion slot 2 from the state shown in FIG. 12, the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the magnetic information in the data zone following the preamble zone The reading of information is performed with the cancellation of the reading disturbance of the interfering magnetic field 14a whose magnetic field intensity has changed in accordance with the change of the tilting attitude of the magnetic field generating coil 14c triggered by the card insertion detection (see FIG. 13). As a result, the cancellation of reading disturbance due to reading of magnetic information in the preamble zone and the cancellation of reading disturbance accompanying reading of magnetic information in the data zone following the preamble zone are offset by different magnetic field strengths. The accuracy of reading the magnetic information in the zone can be disturbed, and the information reading accuracy of information reading by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd can be lowered. This is beneficial in obstructing information reading by the stereo skimmer type unauthorized reading device FS.

  The card processing apparatus 1 according to the first embodiment accommodates the magnetic field generating coil 14c in the coil holder 14h, and swings the magnetic field generating coil 14c together with the coil holder 14h on the rotating shaft 14s intersecting the vertical plane along the transport path Cp. It is held so as to be movable, and is swung by the tilting unit 15. Therefore, according to the card processing apparatus 1 of the first embodiment, the magnetic field generating coil 14c can be rocked and held in an arbitrary inclined posture reliably and simply within the rocking angle θm.

  Next, a card processing apparatus 1 according to another embodiment will be described. FIG. 14 is a flowchart showing a control procedure of fraud countermeasure control in the card processing apparatus 1A of the second embodiment for the stereo skimmer type fraudulent reading device FS.

  In the card processing apparatus 1A of the second embodiment, as in the first embodiment, the inclination posture of the magnetic field generating coil 14c in the coil unit 14 is maintained (step S200), and the interference magnetic field 14a is generated from the magnetic field generating coil 14c (step). S210), the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the stereo skimmer type unauthorized reading device FS are subjected to a maximum magnetic field on the disturbing magnetic field 14a inclined in the direction in which the lines of magnetic force extend with respect to the transport path Cp. Expose with strength (see Figure 11).

  Next, the control device 200 determines whether or not the magnetic card C has been inserted into the card insertion slot 2 (step S220). If the control device 200 makes a positive determination that a card has been inserted, it has tilted at an angle θ3 in FIG. The tilting posture is continuously changed by repeatedly swinging the magnetic field generating coil 14c of the coil unit 14 around the rotating shaft 14s (step S230). FIG. 15 is an explanatory diagram showing the relationship between the reading head of the unauthorized reading device FS and the magnetic card C together with the disturbing magnetic field 14a in a state where the tilting posture of the magnetic field generating coil 14c is continuously changed. As shown in FIG. 15, in step S230, the magnetic field generating coil 14c repeats rocking at an angle θ5 included in the range of the rocking angle θm, so that the upper unauthorized reading head FHu of the unauthorized reading device FS and the lower unauthorized reading head FSu. The read head FHd is exposed to the interfering magnetic field 14a so that the magnetic field strength is repeatedly changed by repeatedly changing the tilt angle of the magnetic field generating coil 14c. FIG. 16 is an explanatory diagram showing a first swing pattern when the magnetic field generating coil 14c is repeatedly swung. As shown in the figure, the inclination angle of the magnetic field generating coil 14c is repeatedly changed at a constant cycle (constant speed) following the waveform of the sine wave (FIG. 16A), or the inclination angle of the magnetic field generating coil 14c is changed by different angles. It is changed repeatedly while changing at the speed (FIG. 16B). After continuously changing the tilt angle in this manner, the host device HC is reported (transmitted) that there has been an illegal act (step S240), and this routine is terminated.

  In the card processing apparatus 1A of the second embodiment having the configuration described above, the card insertion sensor 9 detects that the card has been inserted into the card insertion slot 2 using the magnetic field generating coil 14c that generates the interfering magnetic field 14a. When triggered, the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the unauthorized reading device FS are exposed to the interfering magnetic field 14a so that the magnetic field strength repeatedly changes with respect to the transport path Cp. Therefore, according to the card processing apparatus 1A of the second embodiment, the canceling of the read disturbance accompanying the reading of the magnetic information in the data zone following the preamble zone is repeated as the canceling with different magnetic field strengths. The accuracy can be more reliably distorted, and the information reading accuracy of information reading by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd can be further reduced. For this reason, it is possible to further improve the effectiveness of obstructing information reading by the stereo skimmer type unauthorized reading device FS. Moreover, as shown in FIG. 16, if the inclination angle of the magnetic field generating coil 14c is repeatedly changed while changing the period (FIG. 16B), the effectiveness of the information reading interference by the stereo skimmer type illegal reading device FS is , Further increase. Note that when the magnetic field generating coil 14c is repeatedly swung (see FIG. 15), the swing angle θ5 may be repeatedly changed in a wide and narrow manner.

  FIG. 17 is a flowchart showing a control procedure of fraud countermeasure control in the third embodiment for a stereo skimmer type unauthorized reading device FS. In the third embodiment, as in the first embodiment, the inclination posture of the magnetic field generating coil 14c in the coil unit 14 is maintained (step S200), and the interference magnetic field 14a from the magnetic field generating coil 14c in the subsequent step S210 is maintained. In the generation, oscillation for generating a magnetic field in the oscillator 16v (see FIG. 3) is set so that at least one of the strength of the magnetic field or the magnetic field generation frequency is different. 18 is an explanatory diagram showing a first magnetic field generation pattern in which the magnetic field strength, the magnetic field generation frequency, and the interval are constant. FIG. 19 shows a second magnetic field generation pattern in which the magnetic field strength and the magnetic field generation frequency are constant and the interval is changed. FIG. 20 is an explanatory diagram showing a third magnetic field generation pattern in which the magnetic field generation frequency is constant and the magnetic field strength, wave number, and interval are changed, and FIG. 21 is a magnetic field generation step in which the interval is constant and the magnetic field strength and magnetic field generation frequency are changed. It is explanatory drawing which shows 4 patterns. In the third embodiment, the interfering magnetic field 14a is generated from the magnetic field generating coil 14c using any one of the magnetic field generating patterns shown in FIGS. 18 to 21, and the interfering magnetic field 14a of these magnetic field generating patterns is subjected to a stereo skimmer type. The upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the unauthorized reading device FS are exposed with the maximum magnetic field strength (see FIG. 11). As a result, the upper unauthorized reading head FHu and the lower unauthorized reading head FHd are exposed to the interfering magnetic field 14a whose magnetic field strength and magnetic field generation frequency are variously changed according to the magnetic field generation pattern with different maximum magnetic field strengths. After that, as in the first embodiment, the inclination posture of the magnetic field generating coil 14c is changed (step S230) according to whether or not the card is inserted (step S220), and the fraud report is made (step S240). Note that the tilt posture change of the magnetic field generating coil 14c in step S230 may be continuously changed as in the second embodiment.

  In the third embodiment having the configuration described above, the interfering magnetic field 14a in which the magnetic field strength and the magnetic field generation frequency are variously changed between the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the stereo skimmer type unauthorized reading device FS. Expose to. Therefore, even with the card processing device of the third embodiment, since the cancellation of the reading disturbance accompanying the reading of the magnetic information in the data zone following the preamble zone is repeatedly performed at different magnetic field strengths, the accuracy of reading the magnetic information in the data zone The information reading accuracy of information reading by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd can be further reduced. For this reason, it is possible to further improve the effectiveness of obstructing information reading by the stereo skimmer type unauthorized reading device FS. Note that the generation pattern change of the magnetic field generating coil 14c may be performed also on the illegal reading device FS (see FIGS. 5 and 6) having only one illegal reading head FH.

  FIG. 22 is a flowchart showing a control procedure of fraud countermeasure control in the fourth embodiment for a stereo skimmer type fraudulent reading device FS. The fourth embodiment is characterized in that the generation pattern of the interfering magnetic field 14 a generated from the magnetic field generating coil 14 c is different before and after card insertion detection by the card insertion sensor 9. In the fourth embodiment, as in the first embodiment, the inclined posture of the magnetic field generating coil 14c in the coil unit 14 is maintained (step S200), and the interfering magnetic field 14a from the magnetic field generating coil 14c in the subsequent step S210. Is generated according to an initial pattern, for example, the initial pattern shown in FIG. Thereafter, similarly to the first embodiment, it is determined whether or not a card is inserted (step S220), and if a positive determination is made that a card has been inserted, the card processing device of the fourth embodiment generates the magnetic field from the magnetic field generating coil 14c. The generation pattern of the disturbing magnetic field 14a is changed to a pattern different from the initial pattern in step S210, for example, the pattern shown in FIGS. 20 and 21 (step S225), and the inclination posture of the magnetic field generating coil 14c is changed (step S230). ) And conduct a fraud report (step S240). Note that the tilt posture change of the magnetic field generating coil 14c in step S230 may be continuously changed as in the second embodiment.

  In the fourth embodiment having the configuration described above, the generation pattern of the disturbing magnetic field 14a generated from the magnetic field generating coil 14c is triggered by the card insertion sensor 9 detecting the card insertion into the card insertion slot 2. Switch. Therefore, there are the following advantages. When the magnetic card C is accidentally inserted into the stereo skimmer type unauthorized reading device FS and the magnetic card C is inserted into the card insertion slot 2, the magnetic information in the preamble zone on the insertion end side of the magnetic card C is The reading has already been performed by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd of the unauthorized reading device FS, and this reading is performed in a state where both unauthorized reading heads are exposed to the disturbing magnetic field 14a generated in the initial pattern. The After the magnetic card C is inserted into the card insertion slot 2, the information reading of the magnetic information in the data zone following the preamble zone by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd occurs when the card insertion is detected. This is accompanied by cancellation of the reading disturbance of the interfering magnetic field 14a whose pattern has been switched. As a result, the cancellation of the read disturbance due to the magnetic information reading in the preamble zone and the cancellation of the read disturbance due to the magnetic information reading in the data zone following the preamble zone are offset by the interference magnetic field 14a generated in different patterns. The accuracy of magnetic information reading in the data zone following the preamble zone can be reduced more reliably, and the information reading accuracy of information reading by the upper unauthorized reading head FHu and the lower unauthorized reading head FHd can be further reduced. be able to. This is beneficial in obstructing information reading by the stereo skimmer type unauthorized reading device FS.

  FIG. 23 is an explanatory diagram showing a schematic configuration of a coil unit 14A of the fourth embodiment. As shown in the figure, the coil unit 14A has one rotary shaft 14s pivotally supported by the pivotal support portion 14j coupled to the voice coil unit 30. The voice coil unit 30 includes a rotating plate 31 connected to the rotating shaft 14s, a voice coil 32 embedded in the end of the plate, and a metal yoke 34. The metal yoke 34 is formed so as to surround the rotating plate 31, and the voice coil 32 is positioned between the opposing magnets 33. The voice coil unit 30 changes the inclination angle of the magnetic field generating coil 14c of the coil unit 14 by passing a current through the voice coil 32 under the control of the control device 200 and changing the current value. The rotation angle of the rotating shaft 14s, that is, the inclination angle of the magnetic field generating coil 14c is detected by an encoder (not shown). By using the coil unit 14 </ b> A of the fourth embodiment instead of the coil unit 14, the above-described fraud countermeasure effect for the unauthorized reading device FS can be obtained.

  FIG. 24 is an explanatory view schematically showing a schematic configuration of the card processing device 1B of the fifth embodiment together with a main configuration of the card insertion slot 2 as viewed from the A direction. This card processing apparatus 1B is provided with a coil unit 14B on the side of the card insertion slot 2 like the coil unit 14 in the previous embodiment, and a holding spring 19a fixed to the insertion slot body 2v. The coil unit 14B is held on the upper side and the lower side of the transport path Cp so that the coil unit 14B can be tilted with respect to the transport path Cp. The coil unit 14B accommodates the magnetic field generating coil 14c in the coil holder 14h, and also accommodates tilt drive coils 19b in the coil holder 14h on both sides of the magnetic field generating coil 14c. The tilt driving coil 19b surrounds a magnet 19c positioned and fixed with respect to the card insertion slot 2, and receives a current from the control device 200 to generate a coil tilting magnetic field. Therefore, by controlling the energization to the tilt drive coil 19b, the magnetic field generating coil 14c of the coil unit 14B is swung so that the tilt angle is different with respect to the transport path Cp, like the coil unit 14 described above. Let By using the coil unit 14 </ b> B of the fifth embodiment instead of the coil unit 14, the above-described fraud countermeasure effect for the unauthorized reading device FS can be obtained. Further, according to the coil unit 14B of the fifth embodiment, a driving device such as the motor 15a is not required, and thus the weight and size can be reduced. The tilt driving coil 19b and the magnet 19c may be disposed only on one side of the card insertion slot 2.

  FIG. 25 is an explanatory diagram schematically showing the configuration of the coil unit 14C of the sixth embodiment. In the coil unit 14C, similarly to the coil unit 14B in the previous embodiment, the magnetic field generating coil 14c and the tilt driving coil 19b are accommodated in the coil holder 14h. The coil unit 14C is held by the holding plate 20a outside the tilt driving coil 19b surrounding the magnet 19c. The holding plate 20a is a flexible thin plate, and is twisted while being fixed to the insertion port body portion 2v, thereby holding the coil unit 14C in a swingable manner about the axis of the twist. Accordingly, even in the coil unit 14C, the magnetic field generating coil 14c of the coil unit 14C can be controlled with respect to the transport path Cp by controlling the energization to the tilt driving coil 19b. Swing so that the tilt angle is different. By using the coil unit 14 </ b> C of the sixth embodiment instead of the coil unit 14, the above-described fraud countermeasure effect for the unauthorized reading device FS can be obtained. In addition, the coil unit 14C of the sixth embodiment also eliminates the need for a driving device such as the motor 15a, and thus can be reduced in weight and size. The tilt driving coil 19b and the magnet 19c may be disposed only on one side of the card insertion slot 2.

  The present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations without departing from the spirit thereof. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the above-described effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

  In each of the above embodiments, the initial magnetic field and the disturbing magnetic field are generated from one magnetic field generating coil 14c. However, one of the two coils wound concentrically is used as the initial magnetic field generating coil, and the other The coil may be a coil for generating a disturbing magnetic field.

  In each of the above embodiments, the magnetic field generating coil 14c is formed in the vicinity of the card insertion slot 2 so as to surround the conveyance path Cp. However, the magnetic field generation coil 14c is not surrounded by the conveyance path Cp in the vicinity of the card insertion slot 2. You may form so that a coil attitude | position can be changed so that an inclination angle may differ with respect to Cp. Further, although the interference magnetic field generator 16 and the metal foreign matter detection circuit unit 17 have different device configurations, a magnetic field having a first oscillator for generating the interference magnetic field 14a and a second oscillator for generating the high frequency magnetic field 14b. A generator may be used, and in this magnetic field generator, the first oscillator and the second oscillator may be switched.

DESCRIPTION OF SYMBOLS 1, 1A-1B ... Card processing apparatus 1a ... Housing 2 ... Card insertion slot 2v ... Insert slot body part 3 ... Magnetic head 4 ... Stripe detection sensor 5 ... Shutter 6a-6c ... Conveyance roller pair 6d ... Auxiliary roller 8a-8c ... Card position sensor 9 ... Card insertion sensor 14, 14A-14C ... Coil unit 14a ... Interfering magnetic field 14b ... High frequency magnetic field 14c ... Magnetic field generating coil 14ch ... Coil normal 14h ... Coil holder 14j ... Shaft support 14s ... Rotating shaft 15 ... Inclination Unit 15a ... Motor 15b ... Gear head 15c ... Encoder 16 ... Interference magnetic field generator 16v ... Oscillator 17 ... Metal foreign object detection circuit 17v ... Oscillator 19a ... Holding spring 19b ... Tilt drive coil 19c ... Magnet 20 ... Lead wire 20a ... Hold Plate 21 ... Switch 25 Card transport motor 30 ... Voice coil unit 31 ... Rotating plate 32 ... Voice coil 33 ... Magnet 34 ... Metal yoke 200 ... Control device 210 ... Communication unit B ... Return path direction F ... Outward path direction C ... Magnetic card Cp ... Transfer path FP ... Front panel HC ... High-level device FS ... Unauthorized reading device FH ... Unauthorized reading head FHd ... Lower unauthorized reading head FHu ... Upper unauthorized reading head

Claims (9)

A card processing device for processing a magnetic card,
A magnetic field generating coil provided in the vicinity of a conveyance path for conveying the magnetic card from the insertion slot of the magnetic card;
A magnetic field generating oscillating unit that generates a magnetic field reaching the outside of the insertion port from the magnetic field generating coil;
A card processing apparatus comprising: a posture changing unit that changes a posture of the magnetic field generating coil that generates the magnetic field. The card processing device according to claim 1,
The magnetic field generation oscillating unit generates a magnetic field for disturbance as a magnetic field reaching the outside of the insertion opening from the magnetic field generation coil,
The said card | curd processing apparatus with which the said attitude | position change part changes the attitude | position of the said magnetic field generation coil in at least one part of the generation | occurrence | production period of the said magnetic field for disturbance by the said magnetic field generation oscillation part. The card processing device according to claim 2 ,
A card insertion detection sensor for detecting that the magnetic card has been inserted into the insertion slot;
The posture changing unit changes the posture of the magnetic field generating coil when the card insertion detection sensor detects card insertion. The card processing apparatus according to claim 3, wherein the posture changing unit repeatedly changes the posture of the magnetic field generating coil when the card insertion detection sensor detects card insertion. Claim 3 or is a card processing apparatus according to claim 4,
The magnetic field generation / oscillation unit causes the magnetic field generation coil to generate the interfering magnetic field so that at least one of a magnetic field strength or a generated frequency is different before and after the posture change for changing the posture of the posture changing unit. apparatus. A card processing apparatus according to any one of claims 2 or we claim 5,
The card processing device, wherein the posture changing unit changes the posture of the magnetic field generating coil while changing at least one of a posture changing width or a posture changing speed when changing the posture of the magnetic field generating coil. A card processing apparatus according to any one of claims 2 or we claim 6,
The card processing apparatus, wherein the magnetic field generating / oscillating unit generates the disturbing magnetic field in the magnetic field generating coil while changing at least one of a magnetic field intensity and a generated frequency. The card processing device according to any one of claims 1 to 7 ,
Before SL attitude changing unit, the magnetic field generating coil housed in the coil holder, the coil holder by holding the axis of rotation intersecting the conveying path, the inclined posture of the magnetic field generating coil relative to the transport path A card processing device that can be changed in such a way that it can be changed. The card processing device according to any one of claims 1 to 7 ,
Before SL attitude changing unit, the magnetic field generating coil housed in the coil holder, the coil holder by holding a spring or flexible thin plate, tilting attitude of the magnetic field generating coil relative to the transport path A card processing device that can be changed as described above.

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