JPH0632094B2 - IC card identification device - Google Patents

Description

The present invention relates to an IC card identification device for identifying the suitability of a card inserted in an IC card reading / writing device.

[Description of Prior Art] As one of the conventional techniques related to the present invention, Japanese Patent Laid-Open No.
There is an electronic storage card reading device described in Japanese Patent Publication No. 173681. This is configured to apply a power source and a signal to the IC card by detecting that the IC card has been sent to a predetermined reading position.
The power supply and the signal are prevented from being applied during the sliding contact between the contact pin of the reading device and the contact of the IC card.
It is intended to prevent the deterioration and malfunction of the integrated circuit of the C card.

However, such a conventional device only detects whether or not the IC card has been sent to a predetermined position, so that when a pseudo card with a conductor plate such as an iron plate is inserted by mischief or the like, The power is supplied, and the short circuit and the overcurrent may cause damage to the device.

[Object of the Invention] The present invention has been made based on the above viewpoint, and an object thereof is an IC capable of preventing an improper insertion of a card.
It is to provide a card identification device.

[Means for Achieving the Purpose] In the present invention, a device provided in a read / write device for an IC card is provided with a plurality of contacts for contacting each card contact of the IC card, each contact being an electrical contact. Independent,
The contacts at both ends have a single contact end for respectively contacting the card contacts at both ends of the IC card, and the contacts between them respectively have two contact ends for contacting both adjacent card contacts of the IC card. It has such a structure that it is electrically connected through each card contact when it comes into contact with the card contact of the IC card, and is electrically disconnected when not in contact with the card contact of the IC card. The contact points are arranged so as to come into contact with the card contact points of the IC card before the IC card is pushed into the reading / writing position. When the IC card is inserted in a state where the contact means for giving a conduction / non-conduction signal in contact / non-contact with the card contact of the IC card and the contact of the contact means are in contact with the card contact of the IC card The above C: Detecting means for detecting a card and giving a detection signal; and responsive to the conduction / non-conduction signal from the contact means and the detection signal from the detection means, when the card is inserted, the conduction is generated according to the insertion. It is determined that the card is valid based on the fact that both the signal and the non-conduction signal and the detection signal are given, and it is inappropriate based on the fact that either the conduction signal or the non-conduction signal and the detection signal are given according to the insertion. According to the IC card identification device having the discriminating means for discriminating that the card is a card, and the permitting / rejecting means for permitting or rejecting the insertion of the inserted card into the read / write position according to the discrimination result of the discriminating means. Achieve the purpose.

[Embodiment of the Invention] FIG. 1 and FIG. 2 are configuration diagrams showing an embodiment of the present invention.

In FIG. 1, an IC card reading / writing device 1 has a card insertion path 3 inside the device 1 corresponding to a card insertion port 2 formed on one side surface. Reference numeral 4 denotes an IC card, which has card contact portions 5 and 6 on one surface, and can be inserted into the apparatus 1 from the card insertion opening 2 through the card insertion path 3 with the card contact portions 5 and 6 facing upward. ing. A stopper 3a is formed at the innermost portion of the card insertion path 3, and the insertion end of the IC card 4 contacts the stopper 3a so that the IC card 4 can be placed at the reading / writing position. . Reference numeral 7 denotes a contact member, which is provided with contact pins 8 and 9 for reading / writing the IC card 4, and when the IC card 4 is placed at a read / write position, the contact pins 8 and 9 are connected to the card contact portions 5, 5. 6
It comes in contact with. Reference numeral 10 denotes an insertion blocking means for blocking the insertion of the IC card 4, which is the contact member 7.
It is provided closer to the card insertion slot 2 side than the card insertion slot 2 and can prevent the IC card 4 from being inserted before the read / write position. The insertion blocking means 10 projects into the card insertion path 3 and blocks the IC card 4 from being inserted.
A spring 10b for urging the blocking member 10a to project into the card insertion path 3, and a spring 10b
It has a solenoid 10c that retracts the blocking member 10a against the biasing force of b, and the insertion of the IC card 4 is allowed by the excitation of the solenoid 10c and the insertion is blocked by the non-excitation. Reference numerals 11 and 12 denote microswitches that are turned on / off when the IC card 4 is inserted / removed, and 13 are contact members having contact points with the card contact portions 5 and 6 of the IC card 4, which are the insertion blocking means 10 and the card. Insertion slot 2
It is provided between and. Reference numeral 14 is a pressing roller for pressing the IC card 4.

As shown in FIG. 2, the card contact portions 5 and 6 of the IC card 4 are four square-shaped card contacts 5 respectively.
a, 5b, 5c, 5d and 6a, 6b, 6c, 6d. Card contacts 5a-5d, 6a-6d
Is the card contact 5 with respect to the card insertion direction indicated by the arrow.
a to 5d form the front row, and the card contacts 6a to 6d form the rear row. The center-to-center distance between the card contacts 5a to 5d in the front row and the card contacts 6a to 6d in the back row is L, and the contacts in each row are formed at equal intervals. Are provided so as to be accompanied by the contact point of. As shown in FIG. 3, the contact point member 13 includes five contact points 16, 17, 18, 19, which are electrically independent from each other and are held in a row by a contact point block 15 made of an insulating material.
Have twenty. The outermost contacts 16 and 2
0 has a single contact edge and contacts 1 sandwiched between them
7, 18 and 19 each have two contact ends. The contacts 16 to 20 are arranged so as to sequentially contact the card contacts 5a to 5d in the front row and the card contacts 6a to 6d in the back row when the IC card 4 is inserted, and the card contacts 5a to 5d or 6a.
It is configured so as to be electrically connected to each other through ~ 6d. That is, the contact 16 and one contact end of the contact 17 are in contact with the card contact 5a (6a), and the other contact end of the contact 17 and one contact end of the contact 18 are the card contacts 5b.
(6b), and the other contact end of the contact 18 and the contact 19
One of the contact ends contacts the card contact 5c (6c),
The other contact end of the contact 19 and the contact 20 are card contacts 5d.
It is configured to contact (6d). In such a contact member 13, one outermost contact 16 is connected to the clock terminals of the binary counters 21 and 22 for up-edge operation, and is also connected to the power supply V _CC via the resistor 23, and the other outermost contact 16 is connected. The outer end contact 20 is grounded. Therefore, the clock terminals of the counters 21 and 22 are
When the contacts 16 to 20 of the contact member 13 are conducted, the L level is set, and when the contacts 16 to 20 are not conducted, the H level is set. The reset terminal of the first counter 21 is connected to the ground via the one microswitch 11 and is connected to the power supply V _CC via the resistor 24. Second counter 22
The reset terminal of is connected to the ground via the other micro switch 12 and is also connected to the power supply V _CC via the resistor 25. Micro switch 11
I so that substantially the center of the card contacts 5a to 5d in the front row of the IC card 4 contacts the contacts 16 to 20 of the contact member 13.
When the C card 4 is inserted, its pin plunger 1
The normally open contact 11b is provided so as to be in the closed state through the contact between the IC card 4 and 1a. The other microswitch 12 is a card contact 6a in the rear row of the IC card 4.
When the IC card 4 is inserted so that the approximately center of 6d contacts the contacts 16 to 20 of the contact member 13, the normally open contact 12b is closed through the contact between the pin plunger 12a and the IC card 4. It is provided so as to be in a state. Counters 21 and 22 correspond to the corresponding microswitch 1
When the switches 1 and 12 are opened, the respective reset terminals are set to the H level and are held in the reset state, and when the corresponding microswitches 11 and 12 are closed, the respective reset terminals are set to the L level to enable the counting. It is like this.
The Q ₁ output terminal of the first counter 21 is connected to one input terminal of the 3-input AND circuit 27 via the inverter 26, and its Q ₂ output terminal is directly connected to another input terminal of the AND circuit 27. There is. Q _{1 of} the second counter 22
The output terminal is connected to another input terminal of the AND circuit 27. The output terminal of the AND circuit 27 is connected to the base of the transistor 29 via the resistor 28, and the collector-emitter circuit of the transistor 29 serves as the insertion blocking means 10.
It is inserted between the power supply V _CC and the ground via the electromagnetic winding 30 of the solenoid 10c.

FIG. 4 is an operation time chart of the configuration of FIG.
Is an on / off operation of the micro switch 11, (b) is a reset input of the first counter 21, (c) is a clock input of the first counter 21, and (d) is the first counter 21.
Q ₁ output of, and (e) is the Q ₂ output of the first counter 21,
(F) is an on / off operation of the microswitch 12,
(G) is the reset input of the second counter 22, (h) is the clock input of the second counter 22, (i) is the Q ₁ output of the second counter 22, and (j) is the output of the AND circuit 27. Shows. The operation of the above configuration will be described below with reference to FIG.

In a state where the IC card 4 is not inserted in the card insertion path 3 of the reading / writing device 1, both the microswitches 11 and 12 are open, and the first counter 21 and the second counter 22 are in a reset state, All of those outputs are at L level. Therefore, the output of the AND circuit 27 is L
At the level, the transistor 29 is turned off, the electromagnetic winding 30 of the solenoid 10c is de-energized, and the blocking member 10
The a is projected to the card insertion path 3 by the bias of the spring 10b.

When the IC card 4 is inserted into the card insertion path 3, first, the card contacts 5a to 5 in the front row of the IC card 4 are inserted.
d contacts the contacts 16 to 20 of the contact member 13. As a result, the contacts 16 to 20 are brought into conduction through the card contacts 5a to 5d, so that the clock inputs of the counters 21 and 22 fall from the H level to the L level ((c) in FIG. 4,
(H)). After that, the IC card 4 is inserted so that the approximate centers of the card contacts 5a to 5d come into contact with the contacts 16 to 20 of the contact member 13, and the microswitch 11 is closed ((a) in FIG. 4). When the micro switch 11 is closed, the first
The reset input of the counter 21 of becomes L level, and the first
The counter 21 of is placed in a countable state (fourth
(B) of the figure). Insert card contacts 5a to 5 of the IC card 4
When d is separated from the contacts 16 to 20 of the contact member 13, the contacts 16 to 20 are turned off, and the clock inputs of the counters 21 and 22 rise from the L level to the H level ((c) and (in FIG. 4). h)). At this rise, the first counter 21
Q ₁ output changes from L level to H level ((d) of FIG. 4). When the insertion of the IC card 4 further progresses and the card contacts 6a to 6d in the rear row come into contact with the contacts 16 to 20 of the contact member 13, the contacts 16 to 20 become conductive again.
The clock inputs of the counters 21 and 22 fall from the H level to the L level ((c) and (h) in FIG. 4). Then, the substantially center of the card contacts 6a to 6d is the contact 16 of the contact member 13.
By touching 20 to 20, the micro switch 12 is closed ((f) in FIG. 4), the reset input of the second counter 22 becomes L level, and the second counter 22
Are placed in a countable state ((g) in FIG. 4).
When the insertion of the IC card 4 progresses and the card contacts 6a to 6d separate from the contacts 16 to 20 of the contact member 13, the contacts 16 to 20 become non-conductive as described above, and the counter 2
The clock inputs of 1 and 22 rise from L level to H level ((c) and (h) in FIG. 4). At the rising edge of the clock input, the Q ₁ output of the first counter 21 is inverted from the H level to the L level, and its Q ₂ output is inverted from the L level to the H level ((d) and (e) of FIG. 4). , The second counter 22
The Q ₁ output of is inverted from the L level to the H level ((i) in FIG. 4). As a result, the output of the AND circuit 27 becomes the H level ((j) in FIG. 4), the transistor 29 is turned on, the electromagnetic winding 30 of the solenoid 10c is excited, and the insertion of the IC card 4 is not blocked. Blocking member 1
0a is withdrawn from the card insertion path 3.

When a conductor plate such as an iron plate is inserted in place of the IC card 4, the contacts 16 to 20 of the contact member 13 are always brought into conduction through the conductor plate, and the clock inputs of the counters 21 and 22 remain at L level. So micro switch 1
The outputs of the counters 21 and 22 are all at the L level regardless of whether the solenoids 1 and 12 are closed, and the electromagnetic winding 30 of the solenoid 10c is not excited. Therefore, the blocking member 10a projects into the card insertion path 3, and the insertion into the read / write position is blocked. In the case of non-conductor plate,
Contrary to the above, the contacts 16 to 20 of the contact member 13 are in the non-conducting state, so that the clock input of the counters 21 and 22 is H level.
The level remains as it is, the excitation of the electromagnetic winding 30 is not performed, and the insertion at the read / write position is prevented.

In the embodiment described above, the blocking member 10 is provided in the card insertion path 3.
Although a is projected so as to prevent the insertion of a nonconforming card, in the case of having a motor-driven card transport mechanism,
The conveyance motor may be reversely rotated to eject the nonconforming card to prevent the insertion. In this case, for example, the rotation direction of the carry motor may be switched by the H level output of the AND circuit 20, which can be easily realized by a conventionally known means. Further, in the above embodiment, the reset input is given to the counter by the micro switch, but other means used for detecting the position of the card, such as an optical switch or a proximity switch, may be used.

[Effects of the Invention] As described above, according to the present invention, it is determined whether or not a card inserted in the reading / writing device has card contacts in a predetermined arrangement to determine whether the card is suitable or not. Since the insertion into the read / write position is permitted or rejected according to the determination, a pseudo card made of a conductor plate or a non-conductor plate, or an IC in which the arrangement of card contacts is different and does not suit the intended read / write device It is possible to provide an IC card identification device that can prevent the card from being inserted into the read / write position and that contributes to preventing damage to the read / write device due to a short circuit or overcurrent.

[Brief description of drawings]

1 and 2 are configuration diagrams showing an embodiment of the present invention,
FIG. 3 is a perspective view of the contact member in FIGS. 1 and 2, and FIG. 4 is an operation time chart of the configuration of FIG. 1 ... IC card reading / writing device, 4 ... IC card, 5
a-5b, 6a-6d ... Card contact, 7 ... Contact member, 10 ... Insertion blocking member, 11, 12 ... Micro switch, 13 ... Contact member, 16-20 ... Contact,
21, 22 ... Counter, 26 ... Inverter, 27 ...
... AND circuit, 29 ... Transistor, 30 ... Electromagnetic winding

Claims (1)

[Claims] 1. A device provided in a read / write device for an IC card, comprising a plurality of contacts for contacting each card contact of the IC card, each contact being electrically independent, and contacts at both ends being the above-mentioned. IC
A single contact end for respectively contacting card contacts at both ends of the card, and a contact between them has two contact ends for contacting both adjacent card contacts of the IC card, respectively. The plurality of contacts that are electrically connected through the respective card contacts when they come into contact with the card contacts of the IC card, and are electrically disconnected when not in contact with the card contacts of the IC card. The plurality of contacts are arranged so as to come into contact with the card contacts of the IC card before the IC card is pushed into the read / write position.
Contact means for applying a conduction / non-conduction signal by contact / non-contact between the plurality of contacts and the card contact of the IC card; and the IC card under the condition that the contact of the contact means contacts the card contact of the IC card. In response to the conduction / non-conduction signal from the contact means and the detection signal from the detection means when detecting the IC card when the card is inserted, , It is determined that the card is proper based on the fact that both the conduction signal and the non-conduction signal and the detection signal are given according to the insertion, and one of the conduction signal and the non-conduction signal and the detection signal are given according to the insertion. Discriminating means for discriminating the card as an inappropriate card based on the fact that the card is inserted, and permitting insertion of the inserted card into the read / write position according to the discrimination result of the discriminating means IC card identification device and a Zessuru acceptable / reject unit.