JP6513600B2 - Card processing device and automatic transaction device - Google Patents

Description

  The present invention relates to a card processing device and an automatic transaction device, and is suitably applied to a card processing device and an automatic transaction device provided with a magnetic field generation unit and a card speed detection unit.

  A transaction processing apparatus such as an automatic teller machine (ATM) is equipped with a card processing apparatus that processes information with respect to a magnetic card or an IC (Integrated Circuit) card. This card processing apparatus takes in a magnetic card or an IC card inserted from a card insertion / ejection slot into the main body, reads magnetic information recorded in a magnetic stripe of the magnetic card with a magnetic head, or uses the IC chip of the IC card. Read recorded information. Then, after the end of the transaction, the magnetic card or the IC card is discharged from the inside of the main body to the card insertion and discharge port.

  In ATM, an illegal device with a fake card insertion and ejection port equipped with a magnetic head is installed so as to cover a legitimate card insertion and ejection port, and a crime called skimming illegally acquires magnetic information of a magnetic card. is there.

  As a preventive measure against skimming, for example, there is a technology that generates a magnetic field in the vicinity of a regular card insertion and discharge port by a magnetic field generation unit to prevent reading of magnetic information of a magnetic card by a magnetic head of an illegal device (for example, Patent Document 1).

  The card processing device described in Patent Document 1 and utilizing the technology generates an interfering magnetic field to disturb the skimmer regardless of the magnetic card insertion and ejection speed.

  In addition, there is a technique for preventing skimming by generating magnetic fields of a plurality of frequencies from a magnetic field generation unit in the vicinity of a card insertion and discharge port (for example, Patent Document 2).

JP 2001-67524 A JP, 2005-266999, A

  Patent Document 1 only states that the disturbing magnetic field generator generates a magnetic field in the area including the passage path through which the magnetic stripe of the magnetic card passes in the outer part of the card slot. There is no specific explanation as to how to generate it. For example, if the disturbing magnetic field is direct current, or if the frequency of the alternating disturbing magnetic field is sufficiently high or low compared to the signal frequency of the read signal of the magnetic stripe, a band pass filter is provided to pass only the read signal. There is a problem that the skimming device steals magnetic information.

  Further, in Patent Document 2 described above, the frequency of the magnetic field is 300 Hz or more and 8.4 kHz or less, and the frequency is a moving speed when passing through the skimming device at a recording density of 75 to 210 bpi (bits / inch) of the magnetic card. The frequency of the magnetic field generated is described as it can effectively interfere with the reading by the magnetic head, since it includes the reading signal frequency of the magnetic information when the value is 0.1 to 1 m / sec. If the reading frequency of the magnetic information according to the moving speed of the magnetic card and the magnetic card does not match, there is a problem that the skimming device steals the magnetic information.

  Furthermore, there is a problem that the skimming device steals magnetic information even when the moving speed of the magnetic card passing through the skimming device is 0.1 m / sec or less or 1 m / sec or more.

  The present invention has been made in consideration of the above points, and provides a card processing apparatus and an automatic transaction apparatus that prevent unauthorized reading of magnetic information recorded on a magnetic card regardless of the moving speed of the magnetic card. It is.

  In order to solve the problems, in the present invention, an opening serving as an insertion / discharge port of a magnetic card, a magnetic head provided in the vicinity of the opening and outputting a signal according to a change in electromagnetic field, and the opening The controller comprises: one or more magnetic field generators emitting a disturbing magnetic field in the vicinity of the controller; and a controller for capturing speed information on the moving speed of the magnetic card inserted into the opening and controlling the magnetic field generator. The control unit may determine the frequency of the disturbing magnetic field emitted from the magnetic field generation unit based on the velocity information.

  According to such a configuration, a disturbance magnetic field of a frequency (a frequency equal to or near the frequency of the magnetic signal of the magnetic card) is emitted around the opening, so that the periphery of the opening is Since the skimming device placed at can not filter out the disturbing magnetic field, it can certainly disturb.

  Moreover, in order to solve this subject, in this invention, the automatic transaction apparatus carrying the said card processing apparatus is provided.

  According to the present invention, it is possible to prevent unauthorized reading of the magnetic information recorded on the magnetic card regardless of the moving speed of the magnetic card.

It is a block diagram showing composition of a card processing device concerning a 1st embodiment of the present invention. It is a schematic structure figure of a card processing device concerning the embodiment. It is explanatory drawing which shows the disturbance magnetic field generation | occurrence | production operation | movement of the card processing apparatus concerning the embodiment. It is explanatory drawing which shows the card | curd moving speed of the card processing apparatus concerning the embodiment, and the frequency of an interference magnetic field. It is explanatory drawing which shows the card | curd moving speed of the card processing apparatus concerning the embodiment, and the frequency of an interference magnetic field. It is a block diagram which shows the structure of the card processing apparatus concerning the 2nd Embodiment of this invention. It is explanatory drawing which shows the card | curd moving speed of the card processing apparatus concerning the embodiment, and the frequency of an interference magnetic field. It is a block diagram which shows the structure of the card processing apparatus concerning the 3rd Embodiment of this invention. It is explanatory drawing which shows the disturbance magnetic field generation | occurrence | production operation | movement of the card processing apparatus concerning the embodiment.

  An embodiment of the present invention will now be described in detail with reference to the drawings.

(1) First Embodiment (1-1) Configuration of Card Processing Device First, the configuration of a card processing device 100 according to the present embodiment will be described with reference to FIG. 1 and FIG. FIG. 1 is a block diagram showing a configuration of a card processing apparatus according to a first embodiment of the present invention, and FIG. 2 is a schematic structural view of the card processing apparatus according to the present embodiment.

  The card processing apparatus 100 is mounted on, for example, an ATM (Automatic Teller Machine) installed in a financial institution. The card processing apparatus 100 includes a card reader that receives a magnetic card owned by a customer and reads the magnetic information recorded on the magnetic card.

  As shown in FIG. 1, the card processing device 100 includes a control unit 2, a storage unit 3, a magnetic reading unit 4, a card position detection sensor 6, a host interface 7, a card insertion detection sensor 8, a card lock drive unit 9, an obstacle The generation unit 10 and the card speed detection unit 30 are included.

  The disturbance generation unit 10 includes a magnetic field control unit 13 and a magnetic field generation unit 11 provided with a loop antenna 12.

  The card speed detection unit 30 includes a card speed detection sensor 31 and a circuit (not shown).

  The control unit 2 is configured of a microcomputer (CPU), and controls the operation of each unit according to a program stored in the storage unit 3. The storage unit 3 includes a memory and stores various types of information (programs). As shown in FIG. 2, the magnetic reading unit 4 is composed of a magnetic head 4a and a circuit (not shown) for driving the magnetic head 4a. The magnetic reading unit 4 reads magnetic information from the magnetic stripe of the magnetic card 200 by the magnetic head 4 a in the main body 1.

  As shown in FIG. 2, the card position detection sensor 6 is composed of one or more light sensors (including a light emitting element and a light receiving element) 6a. The control unit 2 detects the position of the magnetic card 200 in the main body 1 based on the output state of the card position detection sensor 6. The host interface 7 is composed of a circuit that transmits and receives information to and from the ATM.

  As shown in FIG. 2, the card insertion detection sensor 8 is composed of one light sensor (including a light emitting element and a light receiving element) 8a. The card insertion detection sensor 8 detects the magnetic card 200 inserted from the opening 20 serving as an insertion / discharge port of the magnetic card 200, and outputs a detection signal to the control unit 2. The control unit 2 detects the insertion of the magnetic card 200 into the card processing apparatus 100 based on the output state of the card insertion detection sensor 8. As shown in FIG. 2, the card lock drive unit 9 is composed of a solenoid and a circuit (not shown) for moving the card lock lever 9a into and out of the card conveyance path.

  Next, the details of the disturbance generation unit 10 will be described. The magnetic field generator 11 includes a loop antenna 12 and a circuit (not shown) for driving the loop antenna 12. The magnetic field generation unit 11 is disposed closer to the opening 20 than the magnetic head 4 a, and is disposed in front of the magnetic head 4 a and above the opening 20. The magnetic field generation unit 11 causes the loop antenna 12 to emit a disturbance magnetic field around the opening 20 by supplying a current to the loop antenna 12.

  The magnetic field control unit 13 controls the frequency and intensity of the disturbing magnetic field from the loop antenna 12 of the magnetic field generation unit 11 based on, for example, a command (control signal) from the control unit 2 to generate and stop the disturbing magnetic field.

  Next, the card speed detection unit 30 will be described in detail. The card speed detection sensor 31 included in the card speed detection unit 30 is disposed in front of the opening 20 with respect to the magnetic head 4a, is configured with an image sensor used in an optical mouse, and is inserted and ejected. The detection speed (detection speed) is transmitted to the control unit 2. The card speed detection sensor 31 may be a combination of a wheel and an encoder used in a mechanical mouse, or one or more light sensors, one or more microswitches, or a light sensor and a micro It may be a combination of switches.

(1-2) Operation at the time of magnetic card insertion / removal Here, the skimming preventing operation at the time of insertion / removal of the magnetic card according to the present embodiment will be described with reference to FIG. 3, FIG. 4 and FIG. . FIG. 3 is an explanatory view showing a disturbing magnetic field generating operation of the card processing apparatus according to the present embodiment, and FIG. 4 is a description showing a card moving speed of the card processing apparatus according to the present embodiment and a frequency of disturbing magnetic field. It is a figure, FIG. 5 is explanatory drawing which shows the card | curd moving speed of the card processing apparatus concerning this Embodiment, and the frequency of a disturbance magnetic field.

  First, the signal frequency of the magnetic information of the magnetic card 200 read by the magnetic head 40 a of the skimming device will be described. The data recording density of the magnetic card 200 is 75bpi (bit / inch) (about 3 bits / mm) for track 2 in ISO standard, and 210bpi (bit / inch) (about 8.4 bits / mm) for track 1 and track 3 It is defined as On the other hand, the speed at which the magnetic card 200 moves the magnetic head 40a of the skimming device is often in the range of 0.1 to 1 m / sec. The signal frequency of the read signal of the magnetic stripe when the magnetic information is a repetitive pattern of 0 and 1 is represented by the product of the data recording density and the moving speed of the magnetic card 200. Therefore, the signal frequency of the read signal of the magnetic card 200 having a data recording density of 75 bpi is 300 Hz to 3 kHz, and the signal frequency of the read signal of the magnetic card 200 having a data recording density of 210 bpi is 840 Hz to 8.4 kHz.

  When the reading object of the card processing apparatus 100, for example, the magnetic card 200 having a data recording density of 75 bpi moves at 0.1 to 1 m / sec, the signal frequency of the reading signal is 300 Hz to 3 kHz, and the magnetic card 200 having a data recording density of 210 bpi. Is 0.1 to 1 m / s, the signal frequency of the read signal is 840 Hz to 8.4 kHz. On the other hand, when the magnetic head 40a of the skimming apparatus includes a band pass filter that passes only the signal frequency component of the read data, the disturbance magnetic field of a frequency sufficiently higher or lower than the signal frequency of the read signal is Since the disturbance signal due to the disturbance magnetic field is removed by the band pass filter only by generating it in the stripe, a drive signal of the same frequency as or close to the signal frequency of the read signal is used as a drive signal of the loop antenna radiating the disturbance wave. Need to use.

  Next, when the magnetic card 200 is inserted or withdrawn, as shown in FIG. 3, the moving speed of the magnetic card 200 is detected by the card speed detection sensor 31 included in the card speed detection unit 30, and the detection signal is detected as a magnetic card It transmits to the control unit 2 as speed information of 200.

  When the control unit 2 receives speed information on the moving speed of the magnetic card 200 from the card speed detection sensor 31, the control unit 2 controls the magnetic field control unit 13 as a control target based on the received speed information. Determine the frequency of the disturbing magnetic field emitted from Specifically, the control unit 2 calculates the frequency of the disturbing magnetic field transmitted from the loop antenna 12 based on the moving speed of the magnetic card 200 received from the card speed detecting unit 30. At this time, the control unit 2 selects a frequency according to the velocity (moving velocity of the magnetic card 200), and transfers information of the selected frequency to the magnetic field control unit 13. The magnetic field control unit 13 controls the frequency of the disturbing magnetic field from the loop antenna 12 of the magnetic field generation unit 11 based on the received information on the frequency. As a result, an interference wave (interference magnetic field) having the same frequency as or close to the signal frequency of the read signal from the magnetic field generation unit 11 and the frequency selected by the control unit 2 is output. A magnetic field is emitted.

  Here, when the magnetic card 200 having a data recording density of 75 bpi is used, as shown in FIG. 4A, the control unit 2 sets “interference wave frequency (Hz) = card moving speed (mm / s) × The frequency of the disturbance (disturbance magnetic field) is calculated by the formula of 3.0 ". At this time, as shown in FIG. 4B, the control unit 2 selects a frequency (signal frequency of the read signal) according to the moving speed of the magnetic card 200 from 300 Hz to 3 kHz as the frequency of the interference wave. Do.

  Further, when a magnetic card 200 having a data recording density of 210 bpi is used, as shown in FIG. 5A, the control unit 2 sets “interference wave frequency (Hz) = card moving speed (mm / s) × 8 Calculate the frequency of the disturbance wave (disturbance magnetic field) by the calculation formula of “4. At this time, as shown in FIG. 5 (b), the control unit 2 selects a frequency according to the moving speed of the magnetic card 200 from among 840 Hz to 8.4 kHz as the frequency of the interference wave (the signal frequency of the read signal). Choose At this time, the control unit 2 emits radiation from the magnetic field generation unit 11 based on the moving speed of the magnetic card 200 obtained from the speed information and the coefficient (3.0 or 8.4) according to the data recording density of the magnetic card 200. Determine the frequency of the disturbing magnetic field (disturbing frequency).

  Then, information on the calculated frequency (selected frequency) is sent from the control unit 2 to the magnetic field control unit 13 and the disturbance magnetic field at the calculated frequency is generated by the loop antenna 12 to ensure that the magnetic card by the illegal device Reading of 200 magnetic information (skimming) can be prevented.

  Regarding the emission timing of the disturbing magnetic field, the control unit 2 transmits a magnetic field generation command to the magnetic field control unit 13 when the magnetic card 200 is detected by the card speed detection sensor 31 as well as when constantly emitting. The generating unit 11 may emit a disturbing magnetic field.

  Further, when the user stands in front of the ATM, an activation command may be transmitted from the ATM to the card processing apparatus 100. Then, the control unit 2 having received the start-up command by the host interface 7 may transmit a magnetic field generation command to the magnetic field control unit 13 and cause the magnetic field generation unit 11 to emit the disturbing magnetic field. In this case, the disturbance magnetic field may be emitted by the magnetic field generation unit 11 before the insertion of the magnetic card 200 into the disturbance generation unit 10.

  When the card insertion detection sensor 8 detects that the magnetic card 200 is taken into the card processing apparatus 100, the control unit 2 transmits a magnetic field output command to the magnetic field control unit 13. When the magnetic field control unit 13 receives the magnetic field output command, the magnetic field generation unit 11 causes the radiation of the disturbance magnetic field from the loop antenna 12 to start. As another example, after the disturbance magnetic field is radiated for a predetermined time, the radiation of the disturbance magnetic field may be stopped.

  Further, when the card position detection sensor 6 detects that the magnetic card 200 has been pulled out of the card processing apparatus 100, the control unit 2 transmits a magnetic field output command to the magnetic field control unit 13. When the magnetic field control unit 13 receives the magnetic field output command, the magnetic field generation unit 11 causes the radiation of the disturbance magnetic field from the loop antenna 12 to start. As another example, after the disturbance magnetic field is radiated for a predetermined time, the radiation of the disturbance magnetic field may be stopped.

  With regard to the strength of the disturbing magnetic field, the strength of the disturbing magnetic field may be changed according to the moving speed of the magnetic card 200 detected by the card speed detection sensor 31 as well as when constantly emitting with a constant strength. For example, when the moving speed of the magnetic card 200 is slow, the strength of the disturbing magnetic field can be weakened, and when the moving speed of the magnetic card 200 is fast, the strength of the disturbing magnetic field can be increased. Power consumption can be suppressed by changing the strength of the disturbing magnetic field according to the moving speed of the magnetic card 200.

  In the present embodiment, since the frequency of the magnetic signal of the magnetic card 200 and the frequency of the disturbing magnetic field coincide with or are very close to each other, the skimming device can not filter the disturbing magnetic field, so that the disturbing can surely occur. it can.

  Also, when the moving speed of the magnetic card 200 passing through the skimming device is 0.1 m / s or less, or 1 m / s or more, it is calculated from the moving speed of the magnetic card 200 and the recording density of the magnetic card 200. The skimming device can be effectively disturbed by outputting the same frequency as the frequency or a frequency near the calculated frequency as the frequency of the disturbing magnetic field.

  Further, when the moving speed of the magnetic card 200 is not detected, the control unit 2 can determine that the magnetic card 200 does not exist. Therefore, when the radiation of the disturbing magnetic field is stopped and the moving speed of the magnetic card 200 is detected, Since it can be determined that the magnetic card 200 is present, the disturbance magnetic field is emitted only when necessary by reducing the power consumption by executing control to emit the disturbance magnetic field only when the moving speed of the magnetic card 200 is detected. be able to.

(1-3) Effects of the Present Embodiment According to the present embodiment, it is possible to prevent unauthorized reading of magnetic information recorded on the magnetic card 200 regardless of the moving speed of the magnetic card 200. That is, even in the magnetic card 200 with a wide range of moving speeds (0.01 m to 2 m / sec), unauthorized reading (skimming) of the magnetic information of the magnetic card 200 by the unauthorized device can be reliably prevented.

  Further, since the disturbance magnetic field is output only when the magnetic card 200 moves, it is possible to prevent unauthorized reading (skimming) of the magnetic information of the magnetic card 200 by the unauthorized device while suppressing power consumption.

(2) Second Embodiment (2-1) Configuration of Card Processor Next, a second embodiment will be described. The configuration of the card processing apparatus 100 according to the present embodiment will be described with reference to FIG. 6 and detailed description of the same parts as those in the first embodiment will be omitted. The configuration and operation of the unit 10 will be described in detail. FIG. 6 is a block diagram showing the configuration of a card processing apparatus according to the second embodiment of the present invention.

  First, the details of the disturbance generation unit 10 shown in FIG. 6 will be described. The disturbance generation unit 10 has a magnetic field generation unit 11 and a magnetic field generation unit 16 in order to correspond to the magnetic card 200 on which both 75 bpi and 210 bpi of the ISO standard are recorded. The number of magnetic field generation units is not limited to two, and may be plural. The magnetic field generator 16 includes a loop antenna 17 and a circuit (not shown) for driving the loop antenna 17. The magnetic field generation unit 16 causes the loop antenna 17 to emit a disturbance magnetic field different from the disturbance magnetic field emitted from the loop antenna 12 by supplying a current to the loop antenna 17. The magnetic field generator 11 has the same configuration as that of the first embodiment, and thus the description thereof is omitted.

  For example, the magnetic field control unit 13 determines the frequency and intensity of the disturbing magnetic field from the loop antenna 12 of the magnetic field generation unit 11 and the disturbing magnetic field from the loop antenna 17 of the magnetic field generation unit 16 based on the command (control signal) from the control unit 2 Control the generation and stopping of disturbing magnetic fields.

  The card position detection sensor 6 and the card insertion detection sensor 8 have the same configurations as those of the first embodiment, and thus the description thereof is omitted.

(2-2) Operation at the time of magnetic card insertion / removal Here, the skimming preventing operation at the time of insertion / removal of the magnetic card according to the present embodiment will be described with reference to FIG. 6 and FIG. FIG. 7 is an explanatory view showing the card moving speed of the card processing apparatus according to the present embodiment and the frequency of the disturbing magnetic field.

  When the magnetic card 200 in which both 75 bpi and 210 bpi are recorded is used, the card speed detection sensor 31 included in the card speed detection unit 30 detects the moving speed of the magnetic card 200 inserted and discharged from the opening 20 , And transmits the detection signal (detection speed) to the control unit 2 as speed information of the magnetic card 200.

  When the control unit 2 receives the speed information on the moving speed of the magnetic card 200 from the card speed detection sensor 31, the control unit 2 controls the magnetic field control unit 13 as a control target. The frequency of the disturbing magnetic field emitted from the generating unit 16 is determined. Specifically, the control unit 2 calculates the frequency of the disturbing magnetic field (disturbing wave) transmitted from the loop antenna 12 and the loop antenna 17 based on the moving speed of the magnetic card 200 received from the card speed detecting unit 30. At this time, the control unit 2 selects a frequency according to the velocity (moving velocity of the magnetic card 200), and transfers information of the selected frequency to the magnetic field control unit 13. The magnetic field control unit 13 controls the frequency of the disturbance magnetic field from the loop antenna 12 of the magnetic field generation unit 11 based on the received frequency information, and from the loop antenna 17 of the magnetic field generation unit 16 based on the received frequency information. Control the frequency of the disturbing magnetic field. As a result, an interference wave (interference magnetic field) having the same frequency as or close to the signal frequency of the read signal from the magnetic field generation unit 11 and the frequency selected by the control unit 2 is output. A magnetic field is emitted, and an interference wave (interference magnetic field) having a frequency equal to or close to the signal frequency of the read signal and having a frequency selected by the control unit 2 is output from the magnetic field generation unit 16. Interference magnetic field is emitted.

  Here, when calculating the frequency of the disturbing magnetic field transmitted from each of the loop antenna 12 and the loop antenna 17, the control unit 2 determines the frequency of the disturbing wave transmitted from the loop antenna 12 as shown in FIG. The interference wave frequency (Hz) = card movement speed (mm / s) × 3.0 ”is calculated. At this time, as shown in FIG. 7B, the control unit 2 selects a frequency according to the moving speed of the magnetic card 200 from 300 Hz to 3 kHz as the frequency of the interference wave. Further, as shown in FIG. 7A, the control unit 2 sets the frequency of the disturbance wave to be transmitted from the loop antenna 17 as “disturbance wave frequency (Hz) = card moving speed (mm / s) × 8.4”. Calculated using the formula of At this time, as shown in FIG. 7B, the control unit 2 selects a frequency according to the moving speed of the magnetic card 200 from 840 Hz to 8.4 kHz as the frequency of the interference wave.

  Both 75 bpi and 210 bpi are transmitted from the control unit 2 to the magnetic field control unit 13 by sending information on the calculated interference wave frequency and generating an interference magnetic field with the calculated interference wave frequency by the loop antenna 12 and the loop antenna 17. Also in the recorded magnetic card 200, unauthorized reading (skimming) of magnetic information of the magnetic card 200 by the unauthorized device can be reliably prevented.

(2-3) Effects of the Present Embodiment According to the present embodiment, even in the magnetic card 200 on which both 75 bpi and 210 bpi of a wide range of moving speeds (0.01 m to 2 m / sec) are recorded, the illegal device It is possible to reliably prevent unauthorized reading (skimming) of the magnetic information of the magnetic card 200 by the above.

(3) Third Embodiment (3-1) Configuration of Card Processor Next, a third embodiment will be described. The configuration of the card processing apparatus 100 according to the present embodiment differs from the first embodiment only in that the card speed detection unit 30 is not included in the configuration, and the other configurations are the first. It is the same as that of the embodiment.

(3-2) Operation at the time of magnetic card reading Here, the skimming prevention operation at the time of insertion and removal of the magnetic card according to the present embodiment will be described with reference to FIG. 8 and FIG. FIG. 8 is a block diagram showing a configuration of a card processing apparatus according to a third embodiment of the present invention, and FIG. 9 is an explanatory view showing a disturbing magnetic field generation operation of the card processing apparatus according to the present embodiment. is there.

  When the magnetic card 200 in which only 75 bpi is recorded, or the magnetic card 200 in which only 210 bpi is recorded, or the magnetic card 200 in which both 75 bpi and 210 bpi are recorded is used, from the track 2 of the magnetic head 4a The magnetic information (magnetic signal) recorded at 75 bpi and the magnetic information (magnetic signal) recorded at 210 bpi from track 1 and track 3 of the magnetic head 4a are drive circuits as speed information on the moving speed of the magnetic card 200. 50 to the control unit 2.

  When the control unit 2 receives speed information from the drive circuit 50, it calculates the moving speed (card moving speed) of the magnetic card 200 from the magnetic information (speed information) transmitted from each track, and calculates the moving speed ( The frequency of the disturbance magnetic field transmitted from the loop antenna 12 and the loop antenna 17 is calculated based on the card movement speed). At this time, the control unit 2 calculates the moving speed (card moving speed) of the magnetic card 200 from the magnetic signal (speed information) output from the drive circuit 50, and the frequency matched to the calculated speed (card moving speed) Are selected, and information of the selected frequency is transferred to the magnetic field control unit 13. The magnetic field control unit 13 controls the frequency of the disturbance magnetic field from the loop antenna 12 of the magnetic field generation unit 11 based on the received frequency information, and from the loop antenna 17 of the magnetic field generation unit 16 based on the received frequency information. Control the frequency of the disturbing magnetic field. Thereby, the disturbance wave (disturbance magnetic field) of the frequency selected by the control unit 2 is output from the magnetic field generation unit 11 and the magnetic field generation unit 16, and disturbance magnetic fields having different frequencies are emitted around the opening 20. Ru.

  Here, the control unit 2 calculates the frequency of the interference wave to be transmitted from the loop antenna 12 by the following formula: interference wave frequency (Hz) = card movement speed (mm / s) × 3.0, and the loop antenna The frequency of the interference wave to be transmitted from No. 17 is calculated by the following formula: interference wave frequency (Hz) = card movement speed (mm / s) × 8.4.

  Information on the calculated disturbance frequency is sent from the control unit 2 to the magnetic field control unit 13, and the disturbance magnetic field at the calculated interference frequency is radiated from the loop antenna 12 and the loop antenna 17 to make the magnetic information of the magnetic card 200 by the illegal device Incorrect reading (skimming) can be reliably prevented.

(3-2) Effects of the Present Embodiment According to the present embodiment, the configuration is provided also in the magnetic card 200 in which both 75 bpi and 210 bpi of a wide range of moving speeds (0.01 m to 2 m / sec) are recorded. It is possible to reliably prevent unauthorized reading (skimming) of the magnetic information of the magnetic card 200 by the unauthorized device without adding it.

  The present invention is not limited to the above-described embodiment, but includes various modifications. For example, the card processing apparatus 100 in the above-described embodiment can be applied to an automatic transaction apparatus. Specifically, an input / output unit (touch panel) that inputs and outputs information, a card processing unit (card reader) that reads and processes magnetic information recorded on a magnetic card, and information is recorded on a receipt and processed In the case of configuring an automatic transaction apparatus including a receipt processing unit, a cash processing unit that inputs and outputs cash (including bills and coins), and a control unit that performs overall control of the whole and transmits and receives a database and information The components of the card processing apparatus 100 can be mounted on the card processing unit. Also, the control unit 2 and the magnetic field control unit 13 can be integrated, and the control unit 2 can control the magnetic field generation units 11 and 16. The above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the described configurations. Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . In addition, with respect to a part of the configuration of each embodiment, it is possible to add, delete, and replace other configurations.

  In addition, each of the configurations, functions, and the like described above may be realized by hardware, for example, by designing part or all of them with an integrated circuit. Further, each configuration, function, etc. described above may be realized by software by the processor interpreting and executing a program that realizes each function. Information such as programs, tables and files to realize each function should be recorded and placed in memory, hard disk, recording device such as SSD (Solid State Drive), or recording medium such as IC card, SD card, DVD etc. Can.

  Reference Signs List 1 main body, 2 control units, 4 magnetic reading units, 6 card position detection sensors, 8 card insertion detection sensors, 10 interference generation units, 11 magnetic field generation units, 12 loop antennas, 13 magnetic field control units, 16 magnetic field generation units, 17 loops Antenna, 30 Card Speed Detector, 31 Card Speed Sensor, 100 Card Processor, 200 Magnetic Card

Claims (7)

An opening that serves as an insertion / discharge port for magnetic cards;
A magnetic head provided in the vicinity of the opening and outputting a signal according to a change in an electromagnetic field;
One or more magnetic field generators for emitting an interference magnetic field near the opening;
A control unit which takes in speed information on the moving speed of the magnetic card inserted into the opening and controls the magnetic field generation unit;
The control unit
A card processing apparatus, comprising: determining a frequency of an interference magnetic field emitted from the magnetic field generation unit based on the velocity information. It further comprises a card speed detection unit that detects the moving speed of the magnetic card inserted into the opening and outputs a detection signal.
The control unit
The card processing apparatus according to claim 1, wherein a detection signal from the card speed detection unit is fetched as speed information on a moving speed of the magnetic card. The control unit
The card processing apparatus according to claim 1, wherein a signal from the magnetic head, which is a magnetic signal obtained from a magnetic stripe of the magnetic card, is taken in as speed information on a moving speed of the magnetic card. The control unit
When controlling the plurality of magnetic field generation units, the frequencies of the disturbing magnetic fields respectively radiated from the plurality of magnetic field generation units are determined as mutually different frequencies based on the velocity information. The card processing apparatus according to 1. The control unit
The frequency of the disturbing magnetic field or the strength of the disturbing magnetic field emitted from the magnetic field generation unit is determined from the moving speed of the magnetic card obtained from the speed information and the coefficient according to the data recording density of the magnetic card The card processing apparatus according to claim 2, wherein the magnetic field generation unit is instructed to emit the disturbance magnetic field. The control unit
The frequency of the disturbing magnetic field or the strength of the disturbing magnetic field emitted from the magnetic field generation unit is determined from the moving speed of the magnetic card obtained from the speed information and the coefficient according to the data recording density of the magnetic card The card processing apparatus according to claim 3, wherein the control unit instructs the radiation of the disturbance magnetic field to a magnetic field generation unit. It has an input / output unit that inputs and outputs information, a card processing unit that reads and processes magnetic information recorded on a magnetic card, a cash processing unit that inputs and outputs cash, and a control unit that controls the entire system. Automated transaction equipment,
The component of the card processing apparatus of any one of Claims 1-6 is mounted in the said card processing part. The automatic transaction apparatus characterized by the above-mentioned.

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