Shutter mechanism for card controlled self-service transaction terminal

Abstract: A shutter mechanism (40) for a self-service transaction terminal (10) includes a shutter in the form of a hollow cylinder (42) having a slot (46). The shutter (42) is rotatable about a core member (44) from an open position wherein the slot (46) is aligned with a card entry slot (24) in the terminal (10) to a closed positon wherein the slot (46) is aligned with a feed path (90) along which a card (70) may be fed to a reader/writer (94). The core member (44) is provided with a slot (78) and card feed rollers (60,62). When the card (70) is fed reversely after processing, the shutter (42) rotates from the closed to the open position where the user can withdraw the card (70). The shutter construction prevents unauthorised access to the card reader/writer (94) via the card entry slot (24) of the terminal (10).

Description: This invention relates to self-service terminals of the kind operable under the control of a user card to effect a transaction. Typically, such a terminal includes card handling apparatus having input means adapted to receive a card from a user of the apparatus, a card utilization device, card feeding means, control means adapted in operation to control the card feeding means to feed a received card inward from said input means to the utilization device and outward after utilization to a position wherein the card partially protrudes from said input means. An important application of such self-service terminals is in the field of automatic banking, where automated teller machines (ATMs) are in common use. Typically, in an ATM, a user insert a service card into the machine and then enters certain data (PIN number, quantity of currency, type of transaction etc) into a keyboard associated with the machine. The machine will then process the transaction, update the user's bank account if necessary and return the card to a partially protruding position from which it can be removed by user. In a known ATM, when a card is initially inserted in the machine's card entry slot, a sensor senses that the object being inserted is a correct card. For example, if the card must have a magnetic stripe thereon, a sensor can sense that such magnetic stripe is present and if so, cause a flat shutter member located behind the slot to be raised and permit. further entry of the card along a feed path for engagement by feed rollers or other feed means which operate to feed the card fully into the machine and into a location for cooperation with a card processing means such as a magnetic reader/writer device, for example. A disadvantage of this known ATM is that it may be possible for a fraudulent person to enter foreign material at the same time as a magnetic stripe card and thereby jam the shutter open and obtain unauthorised direct access to the card reader/writer. D1 (FR-A-2 295 503) discloses apparatus for blocking access to a card reader/writer prior to and after insertion of a card. The apparatus includes a cylinder rotatably mounted within a guide and defining a slot through which a card can pass so that the cylinder may be rotated to a first position to allow passage of a card and to a second position to block passage of a card. D2 (GB-A-2 005 533) discloses a security transfer device for transferring valuables through a security barrier. The device includes a container having an open top and being movable between two end positions. The device also includes a shield for preventing access to the container while located between the end positions. It is an object of the present invention to provide a card operated self-service terminal wherein the possibility of unauthorised access to a card processing means within the terminal is reduced. Therefore, according to one aspect of the present invention, there is provided a self-service transaction terminal as set forth in claim 1. According to another aspect of the present invention, there is provided a method for object entry control in a self-service transaction terminal as set forth in claim 8. Two embodiments of the present invention will now be described by way of example, with reference to the accompanying drawings, in which:- Fig. 1 is a perspective view of an automated teller machine (ATM) ; Fig. 2 is a front view of a first embodiment of a shutter mechanism for controlling the movement of a user card inserted into the ATM shown in Fig. 1; Fig. 3 is a cross-sectional view of the shutter mechanism shown in Fig. 2, with an inserted user card in a first position; Fig.4 is a cross-sectional view of the shutter mechanism shown in Fig.2, with an inserted user card in a second position; and Fig.5 is a cross-sectional view of a second embodiment of a shutter mechanism for controlling the movement of a user card. Referring first to Fig.1, there is shown a perspective view of an automated teller machine (ATM) 10. The ATM 10 has a user interface 12 which includes a first housing portion 14 provided with a keyboard 16 having a plurality of keys 18. A second housing portion 20 is provided with a display 22, a slot 24 for receiving a user card, a cash dispensing slot 26 and a printer output slot 28 for issuing receipt slips or other printed items to the user. Referring now to Fig.2, there is shown a front view of a shutter mechanism 40 which is located behind the card entry slot 24 in the housing portion 20. Referring also to Fig.3, there is shown a cross-sectional view of the shutter mechanism 40 looking in the direction of the arrows A, Fig.2, and showing also the slot 24 in the housing portion 20. The shutter mechanism 40 includes a hollow circular cylindrical shutter 42 which is rotatable about its axis and surrounds a fixed core 44. The shutter 42 is formed of a rigid material such as metal or plastics material and is provided with a substantially rectangular slot 46 which has a width sufficient to permit passage of a user card. Furthermore, the shutter 42 has an internal diameter sufficient to fully accommodate an inserted user card. The shutter 42 has a gear ring 48 attached thereto, which meshes with a drive gear 50 rotatable by a motor 52. Thus, the motor 52 can be controlled to impart a rotational movement, in the direction of the arrow 54 (Fig.3), to the shutter 42. The core 44 is provided with elongated recesses 56,58 within which are located respective rollers 60,62 mounted on respective shafts 64,66. The rollers 60,62 can be controlled when actuated, to drive a user card 70, which has been inserted into the card slot 24 by a user of the terminal 10, as will be explained hereinbelow. The core 44 is provided with a recess 72 having angled upper and lower faces 74,76 which define a slot 78 formed in the core 44, into which a user card 70 may be inserted. In operation, a user wishing to effect a transaction using the terminal 10 (Fig.1) inserts a user card into the card slot 24. With the shutter 42 in the open position, as shown in Figs. 2 and 3, the card is inserted via the slot 46 in the shutter 42 into the slot 78 in the core 44. The card 70 is inserted by the user until its inner edge 80 approaches the inner surface of the shutter 42. Since as mentioned hereinabove, the length of the card 70 is less than the internal diameter of the cylindrical shutter 42, the card 70 is now positioned wholly within the shutter. When the inserted card 70 reaches the position shown in Fig.3, a pair of microswitches (not shown) located adjacent the inward boundary of the core 44, are actuated and, assuming that a magnetic presensor (not shown) located in front of the rollers 60,62, senses the presence of a magnetic stripe on the card 70, the motor 52 is caused to be effective to rotate the shutter 42 from the open position shown in Fig.3, in the direction of the arrow 54, to the closed position shown in Fig.4. Instead of microswitches, optical sensors may be utilized. Thus, the slot 46 is located diametrically opposite its original position, as shown in Fig.4. Viewed by the user of the terminal 10, the shutter 42 is now in the closed position, and the user cannot access the card 70. Nor, if a fraudulent user has inserted foreign material with the card, can such foreign material be accessed by the user. The rollers 60,62 are now operated to commence to drive the card 70 inwards through the slot 46 and along a feed path 90, see Fig.3 and 4. Further movement along the feed path 90 is effected under the control of drive means 92, which may include further drive rollers, or drive belts for example. The drive means 92 drives the card 70 to a location where a reader/writer unit 94 can read and/or write data from and/or onto the card 70 in accordance with the ATM transaction being effected. Following such read and/or write operation, the card 70 is fed in a reverse direction, with the shutter 42 still in the position shown in Fig.4. The card 70 is fed in the reverse direction until the card is again located within the cylindrical shutter 42. When the leading edge of the outwardly moving card 70 aligns with the above-mentioned microswitches (not shown) located at the inner region of core 44, a timer (not shown) is actuated and upon time-out of the timer, the shutter 42 is rotated in the direction of the arrow 54 through a further 180 degrees until the shutter is again positioned in the open position with the slot 46 directed towards the card entry slot 24. The time-out time of the timer is sufficient to allow for the outwardly moving card 70 to be positioned by the drive means 92 and drive rollers 60,62 wholly within the hollow cylindrical shutter 42, as shown in Fig.3. The user of the terminal 10 can now withdraw the card 70 manually. Although in the preferred embodiment described hereinabove, the shutter 42 is formed as a hollow circular cylindrical shell, other constructions are possible. For example, the shutter could be in the form of a slatted belt. Referring to Fig.5, there is shown a cross-sectional view of a second embodiment of a shutter mechanism 100, which includes a shutter 102 in the form of a belt formed of slats 104 joined together in the manner of a slatted belt. The shutter 102 includes a slot 106 dimensioned to enable a user's card to pass therethrough, as in the first embodiment. The shutter 102 can be driven by drive means (not shown) to move round a solid core member 108 having recessed regions 110,112 in which are located drive rollers 114, 116 for moving an inserted card, as in the first embodiment. The core member 108 has a slot 109 dimensioned to receive a user card (not shown in Fig.5) inserted into the terminal 10. The operation of the second embodiment is generally similar to that of the first embodiment, such that the shutter 102 is either in the open position, as shown in Fig.5, with the hole 106 aligned with the card entry slot (not shown in Fig.5), or in the closed position, with the hole 106 at the diametrically opposed position, such that an inserted card (not shown in Fig.5) can be driven along a feed path to a reader/writer device (not shown in Fig.5). It will be appreciated that the shutter 102, Fig.5, is also of cylindrical shape, but the cross-section is not necessarily circular, as in the first embodiment, but aligns with the outer surface of the core 108, which has substantially flat upper and lower portions 120,122. Thus, there have been described embodiments of a shutter mechanism including a shutter which in a first position enables card insertion or removal but prevents access by a user to the card reader/writer unit and in a second position prevents access by a user both to the card and to the card reader/writer. Thus, it is impossible for the shutter to be in a position wherein direct access to the card reader/writer is possible from the exterior of an ATM provided with the shutter mechanism. It will be appreciated that, with the shutter in the open position, the user has access to the card, and can withdraw it if he or she wishes to do so, until the shutter has commenced to move to the closed position, that is, the user retains control of the card until shutter closure commences. Also, if the card cannot be read because it is jammed, or cannot be returned to the correct position within the hollow cylindrical shutter, the shutter will not be driven to the open position and the user will thus not be able to withdraw the card.

Claims: A self-service transaction terminal having a user card entry control shutter mechanism (40,100) and card processing means (94), the terminal including a feed path (90) along which the card may be driven from within said shutter (42,102) to said card processing means (94), said shutter mechanism (40,100) includes a shutter (42,102) having a slot (46,106) therein for receiving a user card (70) inserted into said terminal, characterised in that said shutter (42,102) has a dimension such that an inserted card can be wholly contained therewithin, where said shutter (42,102) may be driven from a first position in which a card may be inserted or removed by a user but the user is prevented from accessing said card processing means to a second position in which a user is prevented from accessing the card and is also prevented from accessing said card processing means. A self-service terminal according to claim 1, characterized in that said second position is diametrically opposite to said first position. A self-service terminal according to claim 1 or 2, characterized in that said shutter (42,102) is arranged to move around a core member (44,108) having a slot (78,109) therein dimensioned to receive a user card (70). A self-service terminal according to any of claims 1 to 3, characterized by drive means (50) for driving said shutter (42,102) from said first position to said second position in response to the insertion of said user card (70) into a location wherein said user card (70) is wholly contained within said shutter (42,102). A self-service terminal according to claim 4, characterized by drive rollers (60,62; 114,116) located within said core member (44,108) for driving an inserted user card (70) along a feed path (90). A self-service terminal according to any one of the preceding claims, characterized in that said shutter (42) is of a hollow circular cylindrical shape, is formed of a rigid material, and is rotatable about its axis. A self-service terminal according to any one of claims 1 to 5, characterized in that said shutter (102) comprises a belt member formed of a plurality of slats (104). A method for object entry control in a self-service transaction terminal including an object processing means, characterized by the steps of: receiving an object (70) inserted into an aperture (46,106) in a shutter in an object entry control shutter mechanism (40,100) so that the object is wholly contained within the shutter; driving said shutter containing said received object (70) from a first position in which an object may be inserted or removed by a user but the user is prevented from accessing said object processing means to a second position in which a user is prevented from accessing said object (70) and is also prevented from accessing said object processing means; and at the second position feeding said object (70) through said aperture (46,106) towards an object processing means (94).

Inventors: MAY DAVID C C, MAY, DAVID C.C.
Applicants: NCR INT INC, NCR INTERNATIONAL INC.
Application year: 1996
Main classification: G07F7
IPC codes: G07F7, G06K13, G07F19, G07D9