WO2013065086A1

WO2013065086A1 - Magnetic recording medium processing device

Info

Publication number: WO2013065086A1
Application number: PCT/JP2011/006121
Authority: WO
Inventors: 英治水野; 敏也濱▲崎▼; 弘之鈴木
Original assignee: 日立オムロンターミナルソリューションズ株式会社
Priority date: 2011-11-01
Filing date: 2011-11-01
Publication date: 2013-05-10

Abstract

A magnetic recording medium processing device is provided with a card insertion opening (51) into which a magnetic card (21) is to be inserted, and a camera (6) that is provided on the inside of said card insertion opening (51) and images the vicinity of said insertion opening from the inside toward the outside. Providing the camera (6) on the inside of the card insertion opening (51) enables a suspicious object installed in the card insertion opening (51) to be reliably detected. Detection of a suspicious object is performed by, for example, comparing the image of the vicinity of the card insertion opening (51) imaged beforehand by the camera (6), with the image of the vicinity of the card insertion opening (51) subsequently imaged by the camera (6). If a suspicious object is installed in the card insertion opening (51), the difference in the two images increases, so comparing said difference to a threshold value enables detection of a suspicious object.

Description

Magnetic recording medium processing device

The present invention relates to a magnetic recording medium processing apparatus that reads data recorded on a magnetic recording medium and executes a predetermined process, and more particularly to a technique for monitoring the presence or absence of a suspicious object installed for the purpose of unauthorized acquisition of data.

Transaction processors such as ATM (Automated Teller Machine) and CD (Cash Dispenser) have a card reader that reads data recorded on the inserted magnetic card, Based on the data read by the card reader, deposit and withdrawal processing, credit processing, and the like are performed. In such a transaction processing apparatus, recently, when a magnetic card is inserted, a crime called skimming occurs which illegally acquires data recorded in a magnetic stripe of the card.

As a typical example of skimming, a fraudulent reader (hereinafter referred to as "Skimmer") equipped with a magnetic head is placed in the card insertion slot of the transaction processing apparatus, and the magnetic slot of this skimmer causes the slot to be inserted. There is a way to steal data recorded on a magnetic card inserted from the The skimmer includes a reading unit including a magnetic head, a memory for storing the illegally read magnetic data, and a wireless communication unit for wirelessly outputting the magnetic data stored in the memory.

When a user who does not know that the skimmer is installed inserts the magnetic card from the insertion slot, the inserted magnetic card passes through the position of the skimmer and is taken into the inside of the transaction processing apparatus. During this process, data on the magnetic card is stolen by the skimmer's magnetic head. Also, even when the magnetic card is returned, the data of the magnetic card can be stolen since the card passes the position of the skimmer. If the data is stolen, a forged card will be created on which the stolen data is recorded, and the transaction will be carried out using this forged card, and the legitimate owner of the magnetic card will suffer great losses.

Various measures have been proposed for the skimming as described above. For example, in Patent Document 1 below, a plurality of optical sensors including a light emitting element and a light receiving element are provided around the card insertion slot, and a skimmer is installed in the card insertion slot based on a change in light reception amount of the light receiving element. A transaction processing device has been described which detects tact.

Further, in Patent Document 2 below, a monitoring camera including a card mechanism unit and a money processing unit in an imaging area is provided, and a photographed image in a state where a suspicious object is not installed in the imaging area is stored as a basic image. A transaction processing device is described which detects a suspicious object based on the difference between the basic image and the current captured image.

U.S. Pat. No. 7,686,212 JP, 2010-61196, A

However, in the configurations shown in Patent Document 1 and Patent Document 2, measures against data stealing by the skimmer have not been sufficient. For example, in the method of detecting a skimmer using an optical sensor as in Patent Document 1, it is easily affected by disturbance light, and detection of the extremely miniaturized skimmer becomes difficult.

More specifically, recent skimmers are so small (several mm square size) that a slight change in the reflected light must be captured by an optical sensor to detect the presence or absence. Therefore, for example, when the reflected light is slightly changed due to, for example, a change in natural light in the installation environment or a shadow of a person passing in front of the transaction processing apparatus, the skimmer may be erroneously determined to be detected. . In addition, since the light reflected by the skimmer is not necessarily uniform, a large number of light emitting elements and light receiving elements must be disposed, and the signal processing also becomes complicated.

On the other hand, according to the method of detecting a skimmer using a camera like the patent document 2, the above-mentioned problem of the patent document 1 can be eliminated. However, in Patent Document 2, since the camera is installed at the edge of the flat panel part away from the card insertion slot, the inside of the card insertion slot becomes a blind spot of the camera. For this reason, it is impossible to capture an image of a small skimmer installed in the card insertion slot with a camera, and there is a problem that the skimmer can not be detected reliably.

Therefore, an object of the present invention is to provide a magnetic recording medium processing apparatus capable of reliably detecting suspicious objects such as skimmers and preventing unauthorized acquisition of data.

The present invention relates to a magnetic recording medium processing apparatus for reading data recorded on a magnetic recording medium and performing a predetermined process, an insertion slot for inserting the magnetic recording medium, and the insertion slot provided inside the insertion slot. And an imaging means for imaging the vicinity of the mouth from the inside to the outside. Then, based on a plurality of images captured under different conditions, the imaging means detects a suspicious object installed in the insertion slot.

In this way, the vicinity of the insertion slot can be monitored by the imaging means provided inside the insertion slot, so even if a suspicious object such as a skimmer is attached to the inside of the insertion slot, this can be reliably detected. It becomes possible. In addition, since the suspicious object is detected based on a plurality of images captured under different conditions, detection accuracy is improved.

As the plurality of images captured under different conditions, it is possible to use a captured image in the vicinity of the insertion slot captured in advance and a captured image in the vicinity of the insertion slot captured after that. In this case, first comparison means for comparing each image, and first determination means for determining presence or absence of a suspicious object installed in the insertion slot based on the comparison result by the first comparison means are provided. .

As a plurality of images captured under different conditions, in addition to the above, a captured image in the vicinity of the insertion slot captured in a state of being irradiated with light when the magnetic recording medium is not inserted, and a state of not emitting light It is possible to use a captured image in the vicinity of the insertion slot that has been captured. In this case, based on the comparison result by the light source for irradiating light to the imaging region of the imaging means, the second comparison means for comparing the respective images, and the second comparison means, A second determination means for determining the presence or absence is provided. The light emitted from the light source is preferably invisible light.

The present invention further comprises detection means for detecting a magnetic recording medium inserted from the insertion slot, and monitoring means for monitoring whether or not a predetermined time has elapsed since a suspicious object was first detected. May be In this case, while the magnetic recording medium is not detected while the predetermined time has not elapsed, imaging of the suspicious object is continued, and when the magnetic recording medium is detected, it is determined that the suspicious object is the magnetic recording medium . On the other hand, when the magnetic recording medium is not detected and it is determined that the predetermined time has elapsed, it is determined that the suspicious object is a suspicious object other than the magnetic recording medium. By doing this, it is possible to prevent the magnetic recording medium from being erroneously determined as a suspicious object such as a skimmer.

The present invention may further include a shutter provided inside the insertion slot, and a shutter control unit that controls the opening and closing of the shutter. In this case, the shutter control unit closes the shutter when a suspicious object is detected. As a result, the magnetic recording medium can not be inserted into the inside through the insertion slot, so that even if a skimmer is installed in the insertion slot, it is possible to prevent data from being stolen.

In the present invention, preferably, the imaging means is provided at a position where it can be imaged from the front where the magnetic stripe provided on the medium passes when the magnetic recording medium is inserted. For the purpose of stealing the data of the magnetic recording medium, the skimmer should be placed at a position corresponding to the place where the magnetic stripe passes. Therefore, a skimmer can be reliably imaged by providing an imaging means in the position which can image the passing place of a magnetic stripe from the front.

In the present invention, preferably, the imaging means is adjusted to be in focus within a predetermined area including the area from the opening outside the insertion port to the inside opening. By adjusting the focus in this manner, the imaging means can capture the skimmer installed in the vicinity of the insertion slot with a clear image, while capturing unnecessary background and the like with a blurry image. In order to more accurately determine the presence or absence of the skimmer, it is preferable to extract the outline of the skimmer.

The present invention may further include a cover that covers the imaging means. In this case, the cover is attached to a guide for guiding the magnetic recording medium inserted from the insertion slot to the inside, and the front of the cover is exposed from the guide so as to face the insertion slot. preferable. In this way, the dust adheres to the cover only at the front surface, and the front surface is exposed from the guide block, so that the cleaning operation for removing the adhered dust can be easily performed.

The present invention may further include a reflecting member for refracting light and inputting the light to the imaging means. The reflective member is provided to face the imaging means. According to this, the imaging means can image the vicinity of the insertion slot at an angle closer to the horizontal, and the imaging range is expanded. Also, the degree of freedom in the installation of the imaging means is improved.

The present invention may further comprise a dust removing plate having a slit through which the magnetic recording medium inserted from the insertion port can pass. The dust removing plate is provided inside the insertion port. In this case, the dust removing plate may be provided with a through hole for enabling imaging in the vicinity of the insertion opening by the imaging means.

The present invention may further comprise notifying means for giving an alarm when a suspicious object is detected. In this case, the notification means may include at least the display unit.

According to the present invention, a suspicious object such as a skimmer installed in the insertion slot can be reliably detected by the imaging means provided inside the insertion slot, so theft of data due to fraudulent acts can be prevented and security can be realized. It is possible to improve.

FIG. 1 is a block diagram showing the configuration of a card processing apparatus according to an embodiment of the present invention. FIG. 2 is a side sectional view showing the internal configuration of the card processing unit. FIG. 3 is a plan view of the magnetic card. FIG. 4 is a side sectional view showing the skimmer attached to the insertion port. FIG. 5 is a plan view showing the arrangement of the camera and the light source. FIG. 6 is an enlarged sectional view for explaining the focal position of the camera. FIG. 7 is a diagram showing an example of a camera. FIG. 8 is an enlarged sectional view showing the mounting structure of the camera. FIG. 9 is an enlarged sectional view showing another example of the camera attachment structure. FIG. 10 is a side cross-sectional view showing another embodiment of the present invention. FIG. 11 is a perspective view of the dust removing plate. FIG. 12 is a flowchart showing a first embodiment of the operation of the card processing apparatus. FIG. 13A is an example of an image captured in the state where there is no suspicious object. FIG. 13B is an example of an image captured in the presence of a suspicious object. FIG. 13C is an example of an image captured in the presence of a card. FIG. 14 is a diagram for explaining an averaging process of captured images. FIG. 15 is a flow chart showing a second embodiment of the operation of the card processing apparatus. FIG. 16A is an example of a captured image when light is emitted in the state where there is no suspicious object. FIG. 16B is an example of a captured image when light is not irradiated in the state where there is no suspicious object. FIG. 17A is an example of a captured image when light is emitted in the presence of a suspicious object. FIG. 17B is an example of a captured image when light is not irradiated in the presence of a suspicious object.

Embodiments of the present invention will be described with reference to the drawings. In each figure, the same numerals represent the same portion or the corresponding portion. Hereinafter, a card processing device will be described as an example of the magnetic recording medium processing device.

First, the electrical configuration of the card processing apparatus will be described with reference to FIG. In FIG. 1, the card processor 100 is, for example, an ATM. The card processing apparatus 100 includes a card processing unit 101 and a host control unit 102.

The card processing unit 101 is a card reader mounted on an ATM, and includes a main control unit 1, a magnetic data reading unit 2, a card transport control unit 3, a card detection unit 4, a shutter control unit 5, a camera 6, an LED 7, and a camera. A control unit 8 and an output unit 9 are provided.

The main control unit 1 includes a CPU and the like, and controls the overall operation of the card processing unit 101. The magnetic data reader 2 reads the magnetic data recorded on the magnetic card. The card conveyance control unit 3 controls conveyance at the time of insertion or discharge of the magnetic card. The card detection unit 4 detects a magnetic card at a predetermined position. The shutter control unit 5 controls the opening and closing of a shutter (described later) provided inside the card insertion slot. The camera 6 as an imaging means monitors the presence or absence of a suspicious object (described later) installed in the card insertion slot. The LED 7 as a light source emits light to the imaging area of the camera 6. The camera control unit 8 controls the operations of the camera 6 and the LED 7, and transmits an image captured by the camera 6 to the host control unit 102. The output unit 9 transmits, to the upper control unit 102, the magnetic data read by the magnetic data reading unit 2, the detection result of the card insertion / non-insertion by the card detection unit 4, and the like.

The host control unit 102 analyzes the image by storing the image captured by the camera 6, the determination unit 11 that analyzes the image, and determines the presence or absence of the suspicious object in the card insertion slot based on the result, and the suspicious object And a display unit 12 for displaying an alarm when the camera is detected. The determination unit 11 includes a CPU and the like.

In the above configuration, the card detection unit 4 constitutes the "detection means" in the present invention. The determination unit 11 configures “first comparison means”, “first determination means”, “second comparison means”, “second determination means”, and “monitoring means” in the present invention. . The display unit 12 constitutes "informing means" in the present invention.

Next, the internal configuration of the card processing unit 101 will be described with reference to FIG. In FIG. 2, the card processing unit 101 includes a housing 20 and a guide block 24 provided on the front surface of the housing 20.

The guide block 24 is formed with a guide port 22 for guiding a magnetic card (hereinafter simply referred to as a "card") 21 inserted in the A direction from a card slot 51 formed in the front panel 50 of the ATM. . The card 21 has a magnetic stripe 21a as shown in FIG. FIG. 3 is a view of the card 21 viewed from the back. The camera 6 is disposed on the upper side of the guide opening 22, and a magnetic head 34 for detecting the magnetic stripe 21 a of the card 21 is provided on the lower side of the guide opening 22.

The camera 6 captures an image of the vicinity of the card insertion slot 51 from the inside to the outside. Therefore, as shown in FIG. 4, when the skimmer SK is installed in the card insertion slot 51, the skimmer SK is imaged by the camera 6. Details of the camera 6 will be described later. The magnetic head 34 detects that the card 21 has been inserted by detecting the magnetic stripe 21a. Therefore, the magnetic head 34 functions as a card insertion detection sensor. The insertion of the card 21 may be detected by a sensor (for example, a pressure sensor) provided separately from the magnetic head 34.

Inside the housing 20, a shutter 23, transport rollers 25-28, card position detection sensors 30-33, and a magnetic head 29 are provided. The shutter 23 is provided inside the guide port 22 and is opened and closed by the shutter control unit 5 (FIG. 1). Thereby, the shutter 23 is switched to the open position shown by the solid line in FIG. 2 and the closed position shown by the broken line. The shutter control unit 5 opens and closes the shutter 23 in accordance with an instruction from the main control unit 1. Note that the shutter 23 may be closed normally while the shutter 23 is held in the open position, and only while the card 21 is being taken into the housing 20. Normally, the shutter 23 is held in the closed position. The shutter 23 may be opened only when 21 is inserted and discharged.

Conveying rollers 25 to 28 are provided as a pair on both sides of the conveying path P, and the card 21 is held and conveyed by the upper and lower rollers. One of the pair of transport rollers is a drive roller to which the rotational force of a motor (not shown) is transmitted, and the other is a driven roller that rotates following the drive roller. The rotation and stop of the motor, the rotational direction, and the rotational speed are controlled by the card transport control unit 3 (FIG. 1).

The card position detection sensors 30 to 33 are transmission type light sensors, and each have a light emitting unit and a light receiving unit opposed to each other with the conveyance path P interposed therebetween. The arrangement interval of these sensors 30 to 33 is shorter than the length of the magnetic card 21 in the transport direction. The sensor 30 detects that the card 21 is pinched by the transport roller 25 closest to the insertion port 22. The sensor 33 detects that the inserted card 21 has reached a storage unit (not shown) that temporarily stores the card. The

sensors

31, 32 detect the position of the card 21 being transported. These card position detection sensors 30 to 33 constitute a card detection unit 4 (FIG. 1) together with the magnetic head 34 for detecting the magnetic stripe.

The magnetic head 29 is provided on the lower side of the conveyance path P between the conveyance roller 26 and the conveyance roller 27. The magnetic head 29 reads the data recorded on the magnetic stripe 21 a of the card 21 while the inserted card 21 is transported on the transport path P. The magnetic data reader 2 shown in FIG. 1 includes the magnetic head 29. The distance between the magnetic head 29 and the sensor 33 is slightly longer than the length of the card 21 in the transport direction. Therefore, when the card 21 reaches the storage section, that is, when the front end of the card 21 reaches the position of the sensor 33, the magnetic head 29 completes reading of the data recorded on the card 21. .

Next, the arrangement of the camera 6 will be described with reference to FIGS. 4 and 5. As mentioned above, although the recent skimmers are extremely miniaturized, the installation locations of the skimmers are naturally limited for the purpose of data theft. First, since the magnetic stripe 21a is on the back side of the card 21, in order to steal data from the magnetic stripe 21a, as shown in FIG. Must. Therefore, the camera 6 is installed on the upper side of the guide opening 22 and installed obliquely downward. Second, in order to steal the data of the card 21, the skimmer SK must be installed at a position corresponding to the place where the magnetic stripe 21a passes. Therefore, as shown in FIG. 5, the camera 6 is disposed at a position where the location where the magnetic stripe 21a passes can be imaged from the front, ie, on the flow line L1 when the magnetic stripe 21a moves, and the card 21 is in the A direction. , And the magnetic stripe 21a is in front of the camera 6. By arranging the camera 6 as described above, the skimmer SK can be reliably imaged.

In FIG. 5, the LED 7 is installed near the camera 6. The LED 7 illuminates an area 70 in front of the camera 6 and functions as sufficient illumination at the time of shooting of the camera 6. On the other hand, since the LED 7 irradiates light toward the card insertion slot 51, there is a possibility that the user of the ATM may mistake this light for guidance display of card insertion in the card insertion slot 51. Therefore, it is desirable that the light of the LED 7 be invisible light such as infrared light.

Next, the focus of the camera 6 will be described with reference to FIG. In FIG. 6, the camera 6 has a predetermined vertical angle of view α, and is installed at a mounting angle of θ with respect to the horizontal direction. The camera 6 is provided with an optical lens (not shown) for adjusting the focus. The camera 6 is intended to monitor a suspicious object attached to the card insertion slot 51. However, an external background, a person and the like are also taken into the camera 6 as an image through the card insertion slot 51. Therefore, as shown in FIG. 6, the optical lens is adjusted so that the focal point F of the camera 6 is included in the area w from the opening 51 a on the outside of the card insertion slot 51 to the opening 51 b on the inside. Avoid focusing on external backgrounds or people.

By adjusting the focal point F in this manner, the camera 6 can shoot the skimmer installed in the card insertion slot 51 with a clear image, while shooting unnecessary background and the like with a blurry image be able to. In this case, in order to more accurately determine the presence or absence of the skimmer captured by the camera 6, it is preferable to extract the contour of the skimmer in image processing. Because the skimmer is in focus, the outline of the object is clearly displayed, but the external background and the person are not in focus, so the outline is not clearly displayed.

Here, the area for setting the focal point F is limited to the area w between the opening 51a on the outside of the card insertion slot 51 and the opening 51b on the inside, but the skimmer is outside the opening 51a or inside the opening 51b. May be installed. Therefore, the area in which the focal point F is set may be an area expanded to a certain range outside and inside the area w, as well as the area w.

FIG. 7 shows a specific shape of the camera 6, where (a) is a plan view and (b) is a front view. The camera 6 includes an imaging unit 6a and a cable 6b. The imaging unit 6 a is configured by a solid-state imaging device, an optical lens, and the like of a complementary metal oxide semiconductor (CMOS) type. The cable 6 b is derived from the imaging unit 6 a and is electrically connected to the circuit board Z.

FIG. 8 shows an example of the mounting structure of the camera 6. The camera 6 is attached to the cover 36 made of a transparent resin member so as to face obliquely downward, and the imaging unit 6 a is covered with the cover 36. The cover 36 is attached to the tip of the guide block 24 and exposed from the guide block 24 so that the front surface 36 a of the cover 36 faces the card insertion slot 51.

With such a structure, the cover 36 can prevent dust from adhering to the imaging unit 6 a of the camera 6. Further, the dust adheres to the cover 36 only at the front surface 36a, and since the front surface 36a is exposed from the guide block 24, the cleaning operation for removing the adhered dust can be easily performed.

FIG. 9 shows another example of the mounting structure of the camera 6. The camera 6 is mounted on the top of a cover 36 made of a transparent resin member to face downward, and the imaging unit 6 a is covered with the cover 36. Inside the cover 36, a mirror 37 as a reflecting member that refracts light and guides the light to the camera 6 is disposed to face the camera 6. An optical prism may be used instead of the mirror 37. The cover 36 is attached to the tip of the guide block 24 and exposed from the guide block 24 so that the front surface 36 a of the cover 36 faces the card insertion slot 51.

With such a structure, as in the case of FIG. 8, the cover 36 can prevent dust from adhering to the imaging unit 6 a of the camera 6, and cleaning for removing dust attached to the front surface 36 a of the cover 36 Work can be done easily. Further, by having the configuration in which the light is refracted by the mirror 37 and guided to the camera 6, the camera 6 can capture the vicinity of the card insertion slot 51 at an angle closer to horizontal than in the case of FIG. The imaging range is expanded. Furthermore, the height h of the cover 36 is reduced, and the freedom of installation of the camera 6 is improved. Therefore, the camera 6 is installed horizontally on the top of the cover 36 to directly connect the circuit board Z to the camera 6 And the cable 6b (FIG. 8) is not necessary.

FIG. 10 shows another embodiment of the present invention. In FIG. 10, the dust removing plate 40 is provided inside the card insertion slot 51. The dust removing plate 40 is a member for preventing external dust from entering the inside of the ATM through the card insertion slot 51, and is made of resin, rubber or the like. As shown in FIG. 11, the dust removing plate 40 is formed with a slit 41 through which the card 21 inserted from the card insertion slot 51 can pass. In addition, a through hole 42 is formed in communication with the slit 41 to enable imaging of the vicinity of the card insertion slot 51 by the camera 6. When the dust removing plate 40 is made of an opaque material, the through holes 42 are required. However, when the dust removing plate 40 is made of a transparent material, the through holes 42 may be omitted.

When such a dust removing plate 40 is provided, a skimmer may be attached to the inside of the dust removing plate 40, so that the region on the front side of the dust removing plate 40 can be imaged as viewed from the camera 6, It is desirable to set the vertical angle of view α and the mounting angle θ (FIG. 6) of the camera 6.

Next, a first embodiment of the operation of the card processing apparatus 100 described above will be described with reference to the flowchart of FIG.

After confirming that no suspicious objects exist in the card insertion slot 51, when the card processing apparatus 100 is powered on, steps S1 to S3 are first executed. In step S1, the camera 6 shoots the vicinity of the card insertion slot 51, and acquires the image. FIG. 13A shows an example of the acquired image. Here, a background 60 outside of the card insertion slot 51 is shown. Photographing by the camera 6 is performed a plurality of times (for example, ten times) continuously at predetermined time intervals. In step S2, preprocessing such as averaging and contour extraction is performed on the image acquired in step S1. By performing such pre-processing, detection accuracy of a suspicious object can be improved.

FIG. 14 is a diagram for explaining the image averaging process. When n images Q1, Q2,... Qn acquired in step S1 are averaged on a time axis, a moving part such as a person is distinguished from a stationary part because moving objects overlap and become unclear. Becomes clear. In addition, even if a person or the like appears temporarily in a stationary state, that part is diluted by averaging and similarly obscures. For this reason, it is desirable to set the shutter speed of the camera 6 to a speed at which a moving object is not clearly photographed, and to perform photographing in a state generally called subject blur.

In step S3, an image obtained by performing processing such as contour extraction on the image subjected to averaging processing is recorded in the storage unit 10 as a basic image. Hereinafter, for convenience, the image of FIG. 13A is used as a basic image.

In step S4, it is determined based on the detection result of the card detection unit 4 whether or not the card 21 is inserted. As a result of the determination, when the card 21 is not inserted (step S4; NO), the process proceeds to step S7, and the camera 6 captures an image of the vicinity of the card insertion slot 51 again to acquire the image. Assuming that there is no change in the background 60, the acquired image is the same as that shown in FIG. 13A unless a skimmer is installed in the card insertion slot 51. On the other hand, if the skimmer is installed in the card insertion slot 51, the acquired image is an image on which the skimmer SK is reflected as shown in FIG. 13B. Further, when the card 21 is inserted from the card insertion slot 51, an image in which the pattern 21b of the card 21 and the surface is shown as shown in FIG. 13C.

In step S8, preprocessing such as image averaging processing and contour extraction is performed on the image acquired in step S7. The image averaging process is the same as in the case of step S2. That is, in FIG. 14, by averaging the n images R1, R2,... Rn acquired in step S7 on the time axis, the moving part becomes unclear, so that the distinction from the stationary part is made. It becomes clear.

In step S9, an image obtained by performing processing such as contour extraction on the image subjected to averaging processing is recorded in the storage unit 10 as an acquired image. Hereinafter, for convenience, the image of FIG. 13B is referred to as an acquired image.

In step S10, the determination unit 11 compares the basic image Q recorded in step S3 with the acquired image R recorded in step S9. Although there are various methods for this comparison, in the present embodiment, a method of comparing the sum of absolute values of differences for the pixels (x, y) of the respective images Q and R with a threshold is given by Use.
Σ | R (x, y) -Q (x, y) |> Sm (1)
Here, R (x, y) is a pixel of the acquired image R, Q (x, y) is a pixel of the basic image Q, and Sm is a threshold.

Subsequently, in step S11, the determination unit 11 determines whether or not a suspicious object has been detected based on the above equation (1). The acquired image R when the skimmer SK is not attached is almost the same as the basic image Q except for the noise component (FIG. 13A). Therefore, the difference between the acquired image R and the basic image Q is small, and the equation (1) does not hold. On the other hand, when the skimmer SK is attached, the skimmer SK appears in the acquired image R (FIG. 13B), and the difference between the acquired image R and the basic image Q becomes large, so that the equation (1) is established. Further, even when the card 21 is inserted, since the card 21 appears in the acquired image R (FIG. 13C), the difference between the acquired image R and the basic image Q becomes large, and the equation (1) is established. Therefore, a suspicious object can be detected in step S11 by setting the threshold value Sm in advance so that equation (1) holds when the skimmer SK is attached.

If no suspicious object is detected as a result of the determination in step S11 (step S11; NO), the process returns to step S4 to continue monitoring whether or not the card 21 is inserted. Then, while the card 21 is not inserted (step S4; NO), the processing of steps S7 to S11 is repeated. If the card 21 is inserted (step S4; YES), the process proceeds to step S5, the data of the card 21 is read by the magnetic data reading unit 2, and predetermined processing is performed based on the read data. On the other hand, if a suspicious object is detected as a result of the determination in step S11 (step S11; YES), the process proceeds to step S12.

In step S12, the determination unit 11 monitors whether 30 seconds have elapsed since the suspicious object was first detected. The reason for doing this is that the suspicious object detected in step S11 is not necessarily the skimmer SK, but it is conceivable that it is the card 21 (FIG. 13C). It is to monitor whether it is not. Note that this 30 seconds is an example, and it may be another time.

As a result of the determination in step S12, if 30 seconds have not elapsed (step S12; NO), the process returns to step S4, and the monitoring of whether or not the card 21 is inserted is continued. Then, while the card 21 is not inserted (step S4; NO), the processing of steps S7 to S12 is repeated. When the card 21 is inserted (step S4; YES), the determination unit 11 determines that the suspicious object detected in step S11 is actually the card 21 instead of the skimmer SK. Then, the process proceeds to step S5, the data of the card 21 is read by the magnetic data reading unit 2, and a predetermined process is performed based on the read data.

On the other hand, when 30 seconds have passed in step S12 while the card 21 is not inserted in step S4 (step S4; NO), the suspicious object detected in step S11 in the determination unit 11 Is determined to be a suspicious object other than a card, that is, the skimmer SK. Then, the process proceeds to step S13, and the shutter control unit 5 closes the shutter 23. As a result, since the card 21 can only be inserted halfway into the card insertion slot 51, the skimmer SK can not read the data recorded on the card 21 to the end.

Subsequently, in step S14, an alarm is displayed on the display unit 12. In the present embodiment, the display unit 12 is a touch panel provided on the ATM main body, and a message such as "I can not handle it now." Is displayed here. In addition, in the alerting | reporting of an alarm, not only a display but generation | occurrence | production of an alarm sound, the warning by a sound, etc. may be used together.

On the other hand, after the insertion of the card 21 is detected in step S4 (step S4; YES), and the process for the card 21 is performed in step S5, the process proceeds to step S6, and based on the detection result of the card detection unit 4, It is determined whether 21 is discharged. Then, when the card 21 is ejected (step S6; YES), steps S1 to S3 are executed again to record a new basic image in the recording unit 10. That is, when the card 21 is discharged and one transaction is completed, the basic image is updated.

By updating the basic image in this manner, a basic image is generated according to the change in the light environment (the movement of the sun, the weather, the presence or absence of night illumination, etc.) at the installation location of the card processing apparatus 100. It is possible to avoid an erroneous determination when the acquired image is compared. The timing of updating the basic image may not be at the end of one transaction. For example, while the ATM is operating, the basic image may be updated at regular intervals.

Next, a second embodiment of the operation of the card processing apparatus 100 will be described with reference to the flowchart of FIG.

When the card processing apparatus 100 is powered on, first, in step S21, it is determined based on the detection result of the card detection unit 4 whether or not the card 21 is inserted. As a result of the determination, if the card 21 is not inserted (step S21; NO), the process proceeds to step S24, the camera control unit 8 turns on the LED 7, and the imaging area of the camera 6 is irradiated.

Next, in step S25, the camera 6 shoots the vicinity of the card insertion slot 51, and acquires the image. At this time, if the skimmer is not installed in the card insertion slot 51, the acquired image is as shown in FIG. 16A, for example. Here, a background 60 outside of the card insertion slot 51 is shown. On the other hand, if a skimmer is installed in the card insertion slot 51, the acquired image is as shown in FIG. 17A, for example. Here, in addition to the background 60, the skimmer SK is shown. The skimmer SK in this case reflects the light of the LED 7 and appears bright. Photographing by the camera 6 is performed a plurality of times (for example, ten times) continuously at predetermined time intervals, as in the first embodiment.

In step S26, preprocessing such as averaging and contour extraction is performed on the image acquired in step S25. The pre-processing is the same as in the first embodiment, so the detailed description is omitted.

In step S27, the preprocessed image is recorded in the storage unit 10 as an acquired image Uon. Hereinafter, for convenience, the images of FIG. 16A and FIG. 17A will be referred to as acquired images Uon.

Next, in step S28, the LED 7 is turned off. In this state, in step S29, the camera 6 captures an image of the vicinity of the card insertion slot 51 again, and acquires the image. At this time, if the skimmer is not installed in the card insertion slot 51, the acquired image is as shown in FIG. 16B, for example. On the other hand, if a skimmer is installed in the card insertion slot 51, the acquired image is as shown in FIG. 17B, for example. Here, in addition to the background 60, the skimmer SK is shown. The skimmer SK in this case appears dark because there is no light irradiation by the LED 7. Photographing by the camera 6 is performed a plurality of times (for example, ten times) continuously at predetermined time intervals, as in step S25.

In step S30, preprocessing such as averaging and contour extraction is performed on the image acquired in step S29.

In step S31, the preprocessed image is recorded in the storage unit 10 as an acquired image Uoff. Hereinafter, for convenience, the images of FIGS. 16B and 17B will be referred to as acquired images Uoff.

In step S32, the determination unit 11 compares the acquired image Uon recorded in step S27 with the acquired image Uoff recorded in step S31. In this comparison, a method is used to compare the sum of absolute values of differences for pixels (x, y) of each of the images Uon and Uoff with a threshold according to the following equation.
Σ | Uon (x, y) -Uoff (x, y) |> Sw (2)
Here, Uon (x, y) is a pixel of the acquired image Uon, Uoff (x, y) is a pixel of the acquired image Uoff, and Sw is a threshold.

Subsequently, in step S33, the determination unit 11 determines, based on the equation (2), whether or not a suspicious object has been detected. When the skimmer SK is not attached, even if the LED 7 is on, there is no object that reflects light, so the acquired images Uon and Uoff become substantially the same except for noise components (FIG. 16A, FIG. 16B). ). Therefore, the difference between the acquired image Uon and the acquired image Uoff is small, and the equation (2) does not hold. On the other hand, when the skimmer SK is attached, the light from the LED 7 is reflected by the skimmer SK when the LED 7 is lit, so the skimmer SK looks bright (FIG. 17A), and when the LED 7 is extinguished, there is no light from the LED 7 , Skimmer SK looks dark (FIG. 17B). Therefore, the difference between the acquired image Uon and the acquired image Uoff becomes large, and the equation (2) is established. Therefore, a suspicious object can be detected in step S33 by setting the threshold value Sw in advance so that equation (2) holds when the skimmer SK is attached.

As a result of the determination in step S33, when a suspicious object is not detected (step S33; NO), the process returns to step S21, and the monitoring of whether or not the card 21 is inserted is continued. Then, while the card 21 is not inserted (step S21; NO), the processing of steps S24 to S33 is repeated. If the card 21 is inserted (step S21; YES), the process proceeds to step S22, the data of the card 21 is read by the magnetic data reading unit 2, and predetermined processing is performed based on the read data. On the other hand, if a suspicious object is detected as a result of the determination in step S33 (step S33; YES), the process proceeds to step S34.

In step S34, as in step S12 of FIG. 12, the determination unit 11 monitors whether 30 seconds have elapsed since the suspicious object was first detected. Then, as a result of the determination in step S34, if 30 seconds have not elapsed (step S34; NO), the process returns to step S21, and the monitoring of whether or not the card 21 is inserted is continued. Then, while the card 21 is not inserted (step S21; NO), the processing of steps S24 to S34 is repeated. When the card 21 is inserted (step S21; YES), the determination unit 11 determines that the suspicious object detected in step S33 is actually the card 21 instead of the skimmer SK. Then, the process proceeds to step S22, the data of the card 21 is read by the magnetic data reading unit 2, and a predetermined process is performed based on the read data.

On the other hand, when 30 seconds have elapsed in step S34 while the card 21 is not inserted in step S21 (step S21; NO), the suspicious object detected in step S33 in the determination unit 11 Is determined to be a suspicious object other than a card, that is, the skimmer SK. Then, in step S35, the shutter control unit 5 closes the shutter 23 as in the first embodiment.

Subsequently, in step S36, an alarm is displayed on the display unit 12. The contents of the alarm are the same as in the first embodiment. Also in the case of the second embodiment, not only the display but also generation of an alarm sound, a warning by voice, etc. may be used in combination to notify the alarm.

On the other hand, after the insertion of the card 21 is detected in step S21 (step S21; YES), and after processing for the card 21 is performed in step S22, the process proceeds to step S23, and the card is detected based on the detection result of the card detection unit 4. It is determined whether 21 is discharged. When the card 21 is ejected (step S23; YES), the process returns to step S21 to wait for the next card to be inserted.

As described above, in the second embodiment, the presence or absence of a suspicious object is determined by comparing the acquired image Uon when light is emitted from the LED 7 with the acquired image Uoff when light is not emitted from the LED 7. ing. Therefore, since it is not necessary to obtain a basic image in advance as in the first embodiment, it becomes less susceptible to the change in the light environment at the installation place of the card processing apparatus 100. In addition, since updating of the basic image is unnecessary, there is an advantage that the processing can be simplified.

Although the example which provided the camera 6 in order to monitor skimmer SK was mentioned in embodiment mentioned above, this invention is effective also when monitoring various things used for frauds other than skimming. For example, there is a cheating called phishing where a special tool is placed in the card slot to clog the card, and while the cardholder is calling a clerk, the card is pulled out and taken away. According to the present invention, the presence or absence of such a tool can be detected. In addition, it is possible to detect not only objects used for fraudulent acts but also foreign objects etc. inserted into the card insertion slot 51 due to mischief.

Furthermore, the camera 6 can be attached near the card insertion slot 51 by selecting the installation location of the camera, the mounting angle θ, the vertical angle of view α, etc. so that the camera 6 can monitor a wide area including the periphery of the card insertion slot 51. Detection of any suspicious objects.

The present invention can adopt various embodiments other than the embodiments described above. For example, although the example in which the camera 6 is installed on the upper side of the guide opening 22 is given in the above embodiment, the camera 6 may be installed on the lower side of the guide opening 22.

Further, in the above embodiment, as the magnetic recording medium, the magnetic card 21 in which the magnetic stripe 21a is provided on the back surface is taken as an example. However, the invention can also be applied to devices that handle magnetic cards with magnetic stripes on the front or both sides.

Furthermore, in the above embodiment, the magnetic card is taken as an example of the magnetic recording medium. However, the present invention is effective not only for the magnetic card but also as a measure against fraudulent acts on a magnetic recording medium such as a passbook having a magnetic stripe.

The present invention can be applied to all devices that handle magnetic recording media, such as transaction processing devices such as ATMs and CDs, card-type vending machines, card authentication terminals, and the like.

1 main control unit 2 magnetic data reading unit 3 card conveyance control unit 4 card detection unit 5 shutter control unit 6 camera 7 LED
8 camera control unit 9 output unit 10 storage unit 11 determination unit 12 display unit 21 magnetic card 21a magnetic stripe 22 guide port 23 shutter 24 guide block 36 cover 36a front of cover 37 mirror 40 dust removing plate 41 slit 42 through hole 51 card insertion Port 100 Card processing device 101 Card processing unit 102 Host control unit F Focus SK Skimmer

Claims

In a magnetic recording medium processing apparatus that reads data recorded on a magnetic recording medium and executes predetermined processing,
An insertion slot into which the magnetic recording medium is inserted;
And an imaging unit provided inside the insertion slot for imaging the vicinity of the insertion slot from the inside toward the outside,
A magnetic recording medium processing apparatus characterized in that a suspicious object installed in the insertion slot is detected based on a plurality of images captured by the imaging means under different conditions.
In the magnetic recording medium processing device according to claim 1,
First comparison means for comparing a captured image in the vicinity of the insertion slot captured by the imaging means in advance with a captured image in the vicinity of the insertion slot captured by the imaging means thereafter;
A magnetic recording medium processing apparatus, further comprising: a first determination unit that determines the presence or absence of a suspicious object installed in the insertion slot based on a comparison result by the first comparison unit.
In the magnetic recording medium processing device according to claim 1,
A light source for emitting light to an imaging area of the imaging means;
When a magnetic recording medium is not inserted into the insertion slot, the captured image in the vicinity of the insertion slot captured by the imaging unit in a state where light is emitted from the light source, and the imaging in a state where light is not irradiated from the light source Second comparison means for comparing with a captured image in the vicinity of the insertion slot captured by the means;
A magnetic recording medium processing apparatus, further comprising: a second determination unit that determines the presence or absence of a suspicious object installed in the insertion slot based on the comparison result by the second comparison unit.
In the magnetic recording medium processing device according to claim 3,
A magnetic recording medium processing apparatus, wherein the light emitted from the light source is invisible light.
In the magnetic recording medium processing apparatus according to claim 2 or 3,
Detection means for detecting a magnetic recording medium inserted from the insertion port;
And monitoring means for monitoring whether or not a predetermined time has elapsed since a suspicious object was first detected,
When it is determined by the monitoring means that the predetermined time has not elapsed, the imaging means continues to pick up the suspicious object while the magnetic recording medium is not detected by the detection means, and magnetism is detected by the detection means. When a recording medium is detected, the first or second determination means determines that the suspicious object is a magnetic recording medium,
If the magnetic recording medium is not detected by the detection means, and it is determined by the monitoring means that the predetermined time has elapsed, the first or second determination means determines that the suspicious object is not the magnetic recording medium What is claimed is: 1. A magnetic recording medium processing device that is determined to be a suspicious object of
In the magnetic recording medium processing device according to claim 1,
A shutter provided inside the insertion port;
And a shutter control unit that controls the opening and closing of the shutter.
The magnetic recording medium processing device, wherein the shutter control unit closes the shutter when the suspicious object is detected.
In the magnetic recording medium processing device according to claim 1,
A magnetic recording medium processing apparatus characterized in that the imaging means is provided at a position where it can be imaged from the front of a place where a magnetic stripe provided on the medium passes when the magnetic recording medium is inserted.
In the magnetic recording medium processing device according to claim 1,
The magnetic recording medium processing apparatus according to claim 1, wherein the imaging means is adjusted so as to be in focus in a predetermined area including an area from an opening outside the insertion port to an opening inside the insertion port.
In the magnetic recording medium processing device according to claim 1,
It further comprises a cover that covers the imaging means,
The cover is attached to a guide block for guiding the magnetic recording medium inserted from the insertion port to the inside,
A magnetic recording medium processing apparatus, wherein a front surface of the cover is exposed from the guide block to face the insertion port.
In the magnetic recording medium processing device according to claim 1,
A magnetic recording medium processing apparatus, further comprising: a reflecting member provided opposite to the imaging means and refracting light and guiding the light to the imaging means.
In the magnetic recording medium processing device according to claim 1,
It further comprises a dust removing plate provided inside the insertion slot and having a slit through which the magnetic recording medium inserted from the insertion slot can pass.
A magnetic recording medium processing apparatus characterized in that the dust removing plate is provided with a through hole for enabling imaging near the insertion port by the imaging means.
In the magnetic recording medium processing device according to claim 1,
A magnetic recording medium processing apparatus further comprising notification means for giving an alarm when the suspicious object is detected.
In the magnetic recording medium processing device according to claim 12,
The magnetic recording medium processing apparatus, wherein the notification means includes at least a display unit.