JP4192318B2 - IC card system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an IC card system that efficiently prevents an IC card registered in a negative list from being used illegally, and can be used in general wireless card application fields.
[0002]
[Prior art]
In the conventional IC card system, IC cards that have been made unusable due to loss or theft are listed, and these IC cards are used by registering them in an IC card read / write terminal (hereinafter referred to as a card terminal). Some IC cards prevent unauthorized use of an IC card.
[0003]
A list in which an IC card that has been disabled is registered is generally called by a name such as a negative list or a black list (hereinafter referred to as a negative list), and an IC card registered in a negative list of a card terminal cannot be used. .
[0004]
[Problems to be solved by the invention]
However, as IC cards become widespread and the number of IC cards used increases, the number of cards that need to be stored in the negative list also increases.
[0005]
On the other hand, there is a small device in the card terminal, and it is impossible to store all the information on the increasing negative list in the card terminal.
[0006]
For this reason, in the conventional IC card system, if there is negative list information that exceeds the storage capacity of the card terminal, registration of the IC card that has been made unusable occurs, and such an IC card is illegally used. There was a problem that could not be prevented.
[0007]
Therefore, an object of the present invention is to provide an IC card system that can efficiently prevent unauthorized use of an IC card that has been disabled.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, according to the present invention, a center device having a negative list database in which information on IC cards that are disabled is registered, and a card terminal that is communicably connected to the center device; The card terminal includes a negative list in which information on an IC card that has been disabled is registered, and unusable information in which information indicating the unusability is written in an IC card registered in the negative list A write unit and a first deletion unit that deletes the information of the IC card from the negative list when information indicating the unusability is written by the unusable information writing unit; and a certain amount of area in the storage area of the negative list IC card information exceeding the storage capacity of the negative list is obtained from the negative list. And a second deleting means for deleting the said center apparatus,
Storing information in the IC card is removed from the negative list of the card terminal by the second deletion unit to the negative list database, the card terminal has been deleted from the negative list I by the said second deleting means Re-registration means for reading a predetermined number of IC card information from the negative list database of the center device and re-registering with the negative list.
[0009]
Further, according to one aspect of the present invention, an IC card comprising a center device having a negative list database in which information on IC cards that have been disabled is registered, and a card terminal that is communicably connected to the center device. In the system, the card terminal includes a negative list in which information of an IC card that has been disabled is registered, internal information destruction means for destroying internal information of the IC card registered in the negative list, and the internal information When internal information is discarded by the destruction means, a first deletion means for deleting the information of the IC card from the negative list, and a certain amount of area is secured in the storage area of the negative list, and the storage capacity of the negative list And a second deleting unit that deletes information on IC cards exceeding the predetermined number from the negative list, and the center device The IC card deleted from the negative list of the card terminal by the second deleting means is stored in the negative list database, and the card terminal is deleted from the negative list by the second deleting means. Re-registration means for reading a predetermined number of the information from the negative list database of the center device and re-registering with the negative list.
[0010]
Further, according to one aspect of the present invention, the predetermined order is an order of oldest date and time registered in the negative list.
[0011]
Further , according to one aspect of the present invention , the center device includes a negative list database in which information on an IC card that has been disabled is registered, log information monitoring means for monitoring log information of the card terminal, and the log Detection means for detecting use of an IC card registered in the negative list database based on the information, and a registration instruction for instructing registration of information on the IC card detected by the detection means in the negative list of the card terminal And means.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an IC card system according to an embodiment of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is a block diagram showing the configuration of an IC card system according to an embodiment of the present invention. In FIG. 1, the center 1 is provided with a log information monitoring means 2 and a negative list database 3. The card terminals 4a to 4c are provided with negative lists 5a to 5c, negative list updating means 6a to 6c and unusable information writing means 7a to 7. 7c is provided, and each of the card terminals 4a to 4c is connected to the center 1 via a communication network. The communication network may be either wireless or wired. For example, a local area network (LAN), a wide area network (WAN), the Internet, an analog telephone network, a digital telephone network (ISDN: Integrated Service Digital Network), and a PHS ( Personal handy system), satellite communication network, etc. can be used.
[0014]
The log information monitoring unit 2 collects log information of the IC cards 8a to 8c used in the card terminals 4a to 4c, and monitors whether or not the IC cards 8a to 8c are illegally used in the card terminals 4a to 4c.
[0015]
The negative list database 3 registers the ID information 10a to 10c of the IC cards 8a to 8c that are disabled.
[0016]
The negative lists 5a to 5c register the ID information 10a to 10c of the IC cards 8a to 8c, which are disabled, according to the storage capacity of each card terminal 4a to 4c.
[0017]
The negative list updating means 6a to 6c writes the ID information 10a to 10c of the IC cards 8a to 8c disabled to the negative list 5a to 5c, or the ID information 10a to 10c of the disabled IC cards 8a to 8c. Or delete from the negative lists 5a to 5c.
[0018]
When the IC cards 8a to 8c registered in the negative lists 5a to 5c are used, the unusable information writing means 7a to 7c include the IC cards 8a to 8c in the internal information 9a to 9c of the IC cards 8a to 8c. Write information indicating that it cannot be used.
[0019]
For example, it is assumed that the IC card 8a is used in the card terminal 4a in a state where the ID information 10a of the IC card 8a is registered in the negative list 5a of the card terminal 4a. In this case, the card terminal 4a determines unauthorized use of the IC card 8a by comparing the ID information 10a of the IC card 8a with the ID information registered in the negative list 5a.
[0020]
When the card terminal 4a finds unauthorized use of the IC card 8a, the unusable information writing means 7a writes information indicating that the IC card 8a cannot be used into the internal information 9a of the IC card 8a.
[0021]
The negative list update means 6a-6c deletes the ID information 10a of the IC card 8a from the negative list 5a of the card terminal 4a when the unusable information of the IC card 8a is written in the internal information 9a of the IC card 8a.
[0022]
Further, the card terminal 4a notifies the center 1 that the unusable information of the IC card 8a has been written in the internal information 9a of the IC card 8a.
[0023]
When the center 1 receives this notification from the card terminal 4a, the center 1 deletes the ID information 10a of the IC card 8a from the negative list database 3 of the center 1 and issues an instruction to delete the ID information 10a of the IC card 8a to the card terminals 4b, 4c. To do.
[0024]
When the card terminals 4b and 4c receive an instruction to delete the ID information 10a of the IC card 8a from the center 1, the card terminals 4b and 4c delete the ID information 10a of the IC card 8a from the negative lists 4b and 4c of the card terminals 4b and 4c.
[0025]
When the IC card 8a in which the unusable information is written is used in any of the card terminals 4a to 4c, each card terminal 4a to 4c receives the internal information 9a of the IC card 8a before accepting the use of the IC card 8a. Check out. Here, since the internal information 9a of the IC card 8a contains the unusable information of the IC card 8a, it is determined that the IC card 8a cannot be used, and the use of the IC card 8a is rejected. Is done.
[0026]
In this way, the ID information 10a of the IC card 8a is deleted from the negative lists 5a to 5c of the card terminals 4a to 4c by writing the unusable information of the IC card 8a into the internal information 9a of the illegally used IC card 8a. Even in such a case, it is possible to detect unauthorized use of the IC card 8a, to prevent unauthorized use of the IC card 8a, and to reduce the amount of negative list information.
[0027]
When the IC cards 8a to 8c registered in the negative lists 5a to 5c are used in the card terminals 4a to 4c, the card terminals 4a to 4c destroy the internal information 9a to 9c of the IC cards 8a to 8c. Thus, the use of the IC cards 8a to 8c may be disabled.
[0028]
Further, when each card terminal 4a-4c has too many IC cards 8a-8c registered in the negative lists 5a-5c, and the information cannot be stored in each card terminal 4a-4c, the negative list The oldest date and time registered as information is sequentially deleted, and the newly registered one is left in the negative lists 5a to 5c.
[0029]
This makes it possible to efficiently prevent unauthorized use of the IC cards 8a to 8c while effectively using the limited storage capacity of each of the card terminals 4a to 4c. Here, as the number of issued IC cards 8a to 8c increases, the number of IC cards 8a to 8c to be registered in the negative lists 5a to 5c also increases. For this reason, in the present situation where the storage capacity of the card terminals 4a to 4c is limited, the number of IC cards 8a to 8c that cannot be registered in the negative lists 5a to 5c also increases. In particular, if the oldest date and time registered as negative list information are deleted in order, the IC card once registered in the negative list will be temporarily used once it has been used for some time. until it is stored in the negative list 5a~5c each card terminal 4a~4c again) become available.
[0030]
Accordingly, each of the card terminals 4a to 4c reserves a certain amount of area in the negative list information storage area of each of the card terminals 4a to 4c. And since the center 1 could not be stored in each of the card terminals 4a to 4c, a fixed number of pieces of information deleted from the negative lists 5a to 5c of the card terminals 4a to 4c are randomly or fixedly stored from the negative list database 3. The card terminals 4a to 4c receive them and periodically re-register them in the negative lists 5a to 5c in which the above-mentioned fixed amount of area is secured. To do.
[0031]
As a result, in order to find out the IC cards 8a to 8c that are not illegally used for a long time, the limited storage capacity of the card terminals 4a to 4c is prevented from being occupied, and the IC that has not been illegally used for a long time. The cards 8a to 8c can be found.
[0032]
Further, when unusable IC cards 8a to 8c that are not stored in the negative lists 5a to 5c of the card terminals 4a to 4c are used, the card terminals 4a to 4c restrict the use of the IC cards 8a to 8c. It may become impossible.
[0033]
Therefore, the center 1 periodically totals information on the used IC cards 8a to 8c from the card terminals 4a to 4c. Then, the center 1 examines the use history data transferred from each of the card terminals 4a to 4c, and takes out the ID information 10a to 10c of the IC cards 8a to 8c used from the use history data. Then, the ID information 10a to 10c of the IC cards 8a to 8c and the ID information registered in the negative list database 3 of the center 1 are collated to check whether the ID information matches. If there is matching card ID information 10a to 10c, the ID information 10a to 10c is distributed to each card terminal 4a to 4c and stored in the negative list information of each card terminal 4a to 4c.
[0034]
As a result, even when the unusable IC cards 8a to 8c are not registered in the negative lists 5a to 5c of the card terminals 4a to 4c, it is possible to prevent the IC cards 8a to 8c from being illegally used. It becomes.
[0035]
Here, when the IC cards 8a to 8c are illegally used, the same person usually uses the IC cards 8a to 8c in many cases, so the same use as the previous use or the suburbs of the area used last time. Are often reused. For this reason, as the card terminals 4a to 4c for re-registration to the negative lists 5a to 5c, a card terminal that matches these conditions is selected. This makes it possible to register the most effective information for preventing the unauthorized use of the IC cards 8a to 8c for each of the card terminals 4a to 4c, while preventing an increase in storage capacity in each of the card terminals 4a to 4c. In addition, unauthorized use of the IC cards 8a to 8c can be efficiently prevented.
[0036]
Here, when the center 1 distributes the matched ID information 10a to 10c to the card terminals 4a to 4c, the card terminal 4a is based on the type of the card terminals 4a to 4c in which the IC cards 8a to 8c are used. ~ 4c can be selected. For example, when the IC cards 8a to 8c are illegally used as train tickets, when the IC cards 8a to 8c are illegally used again, the IC card 8a to 8c is judged to have a high probability of being used as a ticket. The information of the IC cards 8a to 8c is distributed mainly to the card terminals 4a to 4c that handle the card, and distribution to other types of card terminals 4a to 4c is restricted.
[0037]
The center 1 can also determine the area where the IC cards 8a to 8c are illegally used, and distribute the information on the IC cards 8a to 8c to the card terminals 4a to 4c in the vicinity of the area.
[0038]
FIG. 2 is a flowchart showing the operation of the IC card terminal according to one embodiment of the present invention. In FIG. 2, when the card terminals 4a to 4c start communication with the IC cards 8a to 8c (step S1), the internal information 10a to 10c of the IC cards 8a to 8c is read (step S2). Here, from the specific information or the state of the specific bit stored in the IC cards 8a to 8c, it is determined whether or not the use of the IC cards 8a to 8c is prohibited and invalid (step S3). If the use prohibition information is written in the IC cards 8a to 8c, the card user is notified of this (step S4), and if necessary, the IC cards 8a to 8c are collected as they are.
[0039]
On the other hand, when the use prohibition information is not written in the IC cards 8a to 8c, the ID information 10a to 10c of the IC cards 8a to 8c is read (step S5) and collated with the negative list information stored in the card terminals 4a to 4c. (Step S6). Here, when the ID information 10a to 10c of the IC cards 8a to 8c matches the ID information stored in the negative lists 5a to 5c, the internal information 10a to 10c of the IC cards 8a to 8c is changed to the IC card 8a. By writing data indicating that -8c cannot be used, the IC cards 8a-8c are made unusable (step S7). Then, the card user is notified (step S4), and if necessary, the IC cards 8a to 8c are collected as they are.
[0040]
The IC cards 8a to 8c may be made unusable by destroying the internal information 10a to 10c of the IC cards 8a to 8c.
[0041]
When the ID information 10a to 10c of the IC cards 8a to 8c does not match the ID information stored in the negative lists 5a to 5c, it is determined that the IC cards 8a to 8c are usable, and normal processing by the application is performed. Is performed (step S8).
[0042]
The card terminals 4a to 4c store information on all the used IC cards 8a to 8c, and transfer the stored information to the center 1 when necessary. If the center 1 has a record in the usage history data transferred to the center 1 that has been processed to disable the IC cards 8a to 8c because it matches the negative list information of the card terminals 4a to 4c, The card terminals 4a to 4c are instructed to delete the ID information 10a to 10c of the cards 8a to 8c from the negative list database 3 and to delete the ID information 10a to 10c of the IC cards 8a to 8c from the negative lists 5a to 5c. To do. As a result, unnecessary negative list information can be deleted from each of the card terminals 4a to 4c, and the corresponding negative list information can be stored in the card terminals 4a to 4c, thereby preventing unauthorized use of the IC cards 8a to 8c. It is possible to improve the effect of suppressing / preventing and to reduce unnecessary expenditure of the IC card operator.
[0043]
【The invention's effect】
As described above, according to the present invention, when a certain amount of area is secured in the negative list storage area, and information on the IC card exceeding the storage capacity of the negative list is deleted , the negative list is stored in a predetermined order. For example, by deleting the IC card information in a predetermined order from the negative list in order from the oldest date and time registered in the negative list, the illegal use of the disabled IC card can be efficiently performed. It becomes possible to prevent. Also, by reading a certain number of IC card information deleted from the negative list from the negative list database of the center device and re-registering it with the card terminal, the IC card deleted from the negative list can be used forever. It becomes possible to prevent.
[0044]
In addition, according to one aspect of the present invention, when deleting information of an IC card that exceeds the storage capacity of the negative list, priority is given to the frequently used one by deleting the oldest date and time registered in the negative list. Therefore, it is possible to leave the IC card in a negative list, and it is possible to efficiently prevent unauthorized use of an IC card that has been disabled.
[0045]
In addition, according to one aspect of the present invention, even when an IC card that is not registered in the card terminal negative list is illegally used, the IC card is found by monitoring the use status of the IC card at the center. Thus, it is possible to efficiently prevent unauthorized use of an IC card that has been made unusable without increasing the storage capacity of the card terminal.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an IC card system according to an embodiment of the present invention.
FIG. 2 is a flowchart showing the operation of the card terminal according to an embodiment of the present invention.
[Explanation of symbols]
1 Center 2 Log information monitoring means 3 Negative database 4a to 4c Card terminal 5a to 5c Negative list 6a to 6c Negative list updating means 7a to 7c Unusable information writing means 8a to 8c IC card 9a to 9c Internal information 10a to 10c ID information

Claims (4)

An IC card system comprising a center device having a negative list database in which information on IC cards that have been disabled is registered, and a card terminal that is communicably connected to the center device,
The card terminal
A negative list in which information on IC cards that have been disabled is registered,
Unusable information writing means for writing information indicating unusable to the IC card registered in the negative list,
A first deletion unit that deletes the information of the IC card from the negative list when the information indicating the unusability is written by the unusable information writing unit;
A second deletion unit that reserves a certain amount of area in the storage area of the negative list, and deletes information of the IC card that exceeds the storage capacity of the negative list from the negative list in a predetermined order;
With
The center device is
Storing the information of the IC card deleted from the negative list of the card terminal by the second deleting means in the negative list database;
The card terminal
A re-registration means for reading a predetermined number of pieces of IC card information deleted from the negative list by the second deletion means from the negative list database of the center device and re-registering with the negative list;
An IC card system comprising: An IC card system comprising a center device having a negative list database in which information on IC cards that have been disabled is registered, and a card terminal that is communicably connected to the center device,
The card terminal
A negative list in which information on IC cards that have been disabled is registered,
Internal information destruction means for destroying internal information of the IC card registered in the negative list,
When internal information is discarded by the internal information destruction means, a first deletion means for deleting the information on the IC card from the negative list,
A second deletion unit that reserves a certain amount of area in the storage area of the negative list, and deletes information of the IC card that exceeds the storage capacity of the negative list from the negative list in a predetermined order;
With
The center device is
Storing the information of the IC card deleted from the negative list of the card terminal by the second deleting means in the negative list database;
The card terminal
A re-registration means for reading a predetermined number of pieces of IC card information deleted from the negative list by the second deletion means from the negative list database of the center device and re-registering with the negative list;
An IC card system comprising:   3. The IC card system according to claim 1, wherein the predetermined order is an order of oldest date and time registered in the negative list. The center device is
A negative list database in which information on IC cards that have been disabled is registered;
Log information monitoring means for monitoring card terminal log information;
Detection means for detecting use of an IC card registered in the negative database based on the log information;
Registration instruction means for giving an instruction to register information of the IC card detected by the detection means in a negative list of the card terminal;
The IC card system according to any one of claims 1 to 3 , further comprising:

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