JP2003296678A - Ic card - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IC card wherein a card having a possibility of fraudulent usage can be discriminated by visual observation without confirming it by a terminal provided with a function of checking a state of the card. <P>SOLUTION: The IC card provided with an electrically displayable display part in at least one face of a surface or a rear face is provided with a display means for displaying visually observable image data in the display part, and a display suppressing means allowing recognition of the state of the card by processing the visually observable image data when fraudulent operation is carried out to the card. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card, and more particularly to prevention of illegal use in an IC card having a display unit for displaying an image on the surface of the card.

[0002]

2. Description of the Related Art Conventionally, in IC cards, PIN is used.
(Personal Identification
Number), that is, in the case where the input of the personal identification number fails a plurality of times, a specific function of the card, a specific application mounted on the card, or the card itself is locked.

The term "lock" as used herein means that a function provided in the card or an application installed in the card cannot be selected, and an OS (Operating) of the card is selected.
gSystem) does not respond to the communication from the terminal.

[0004] Locking is performed to prevent an unauthorized cardholder from illegally using the card. For example, in the case of a credit card, the payment function is stopped if the PIN is incorrectly entered three times. Is. The lock may or may not be released by a specific command.

That is, in the IC card, 1) it is very difficult to physically copy the card itself, 2) the data is encrypted when the data is exchanged with the outside of the card, and 3) the access right is required. It can be set. 4) It is much safer than a magnetic card, such as having an authentication function that confirms whether the card and interface device are mutually valid. It is necessary to provide means to prevent it.

In order to confirm the legitimacy and prevent unauthorized use, for example, as in Japanese Patent Laid-Open No. 2001-126046, an image such as a facial photograph is displayed, and digital watermark information is embedded in the image to forge and An IC card for restraining and deterring unauthorized use has been proposed.

However, there are the following problems in the prior art. That is, even if an illegal act is performed on the IC card, the appearance of the card does not change, and therefore it is not possible to visually check the card. Either check the card state by inserting it into a terminal equipped with a check function, or There is a problem that you do not understand until an error occurs on the terminal in payment etc.

The problem that the visual check is impossible becomes a problem especially when the IC card also serves as an individual ID card such as an employee ID card or a membership card. PIN
Even if the payment function is locked due to an illegal act such as input failure multiple times, the appearance of the card will not change, so 1) there is no portrait, 2) there is a similar portrait.
There are cases where the ID card cannot be checked due to various reasons such as 3) hiding the face photograph portion, 4) not seeing when many people pass by at the same time.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a possibility of being illegally used visually without checking with a terminal having a function of checking the state of a card. IC that can identify a card
The purpose is to provide a card.

[0010]

In order to achieve the above object, a first aspect of the present invention is an IC card having a display unit capable of electrically displaying on at least one surface of a front surface and a back surface thereof. The display means for displaying the visible image data and the display changing means for processing the visible image data to change the display contents showing the state of the card are provided.

According to a second aspect of the present invention, in the IC card according to the above-mentioned first aspect, an image recording section for recording image data of a visually recognizable image in a nonvolatile information recording section included in the IC card. Is provided.

According to a third aspect of the present invention, in the IC card according to the first or second aspect described above, a pattern generating means for generating a pattern used for changing the display contents showing the state of the card is provided. It is a thing.

A fourth aspect of the present invention is based on the above first to third aspects.
The IC card according to this aspect is provided with an authentication means for confirming whether the user is an authorized user or operation for the card.

A fifth aspect of the present invention relates to the above first to fourth aspects.
In the IC card according to the above aspect, when the display changing unit determines that the authenticating unit or the host system has performed an unauthorized operation on the card, the image data and the pattern recorded in the information recording unit. By combining the patterns generated by the generating means, the image combining means is configured to make the state of the card recognizable.

A sixth aspect of the present invention is the above-mentioned first to fifth aspects.
In the IC card according to this aspect, when the display changing unit determines that the authenticating unit or the host system has performed an unauthorized operation on the card, the display changing unit does not display the image data to be displayed on the display unit. Thus, the image non-display means is provided to make the state of the card recognizable.

A seventh aspect of the present invention is the above-mentioned first to sixth aspects.
In the IC card according to this aspect, there is provided a canceling unit for canceling the change of the display content by the display changing unit and returning the image data to a visible form by a cancel command.

An eighth aspect of the present invention is the above-mentioned first to seventh aspects.
In the IC card according to this aspect, the pattern generating means may be any one of a reversal pattern for reversing a part of image data, a mosaic pattern for editing in a mosaic pattern, and a marking pattern for adding marks such as crosses and diagonal lines. Alternatively, a combination is generated.

A ninth aspect of the present invention is the above-mentioned first to eighth aspects.
In the IC card according to the aspect,
It is made up of image data of a visible face photograph.

A tenth aspect of the present invention is the IC card according to any of the first to ninth aspects, wherein the image data is image data obtained by visualizing visible text information. .

An eleventh aspect of the present invention is the IC card according to any one of the first to tenth aspects described above, wherein the visible text information includes information about an IC card holder including an ID number. It was done.

A twelfth aspect of the present invention is the IC card according to any of the first to eleventh aspects, wherein the visible text information is installed on a service name that can be enjoyed by the IC card or on the IC card. Application name, or both the service name and the application name.

A thirteenth aspect of the present invention is the IC card according to any of the first to twelfth aspects described above, wherein the image data comprises a background design of the IC card.

According to a fourteenth aspect of the present invention, in the IC card according to the above-mentioned first to thirteenth aspects,
It is configured by an electronic display.

A fifteenth aspect of the present invention is the IC card according to any one of the first to fourteenth aspects, in which the display section is
It is composed of electronic paper that has the features of an electronic display and paper.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described based on illustrated embodiments. FIG. 1 is a schematic configuration diagram of an embodiment of an IC card of the present invention.

The IC card 1 includes a display section 2, display means 3,
The information recording unit 4, the CPU 5, and the program recording unit 6 are provided. Further, although not shown, an interface and an antenna for communicating with the terminal, a RAM for recording temporary data, and the like are also provided.

The display unit 2 is actually an electronic display such as a liquid crystal display, or electronic paper using an electrophoretic method having the features of the electronic display and paper. When it is necessary to constantly supply power to the display unit 2, a battery is also provided in the IC card 1. When the power is needed only when the display content is rewritten, the power is supplied from the terminal.

FIG. 2 shows a contact type IC card provided with a display unit 2. In the case of a contact type IC card, since the contact terminal is on the surface of the card, the display unit 2 is provided at any portion except the contact terminal portion and the print / emboss portion. The display section 2 can be provided on the entire back surface without contact terminals. Of course, the display unit 2 may be provided on both the front surface and the back surface.

FIG. 3 shows a non-contact type IC card provided with the display unit 2. In the case of a non-contact type IC card, since there is no contact terminal on both the front surface and the back surface, the display unit 2 can be provided on the front surface, the back surface, or an arbitrary portion on both the front surface and the back surface.

The image data displayed on the display unit 2 displays information about the owner of the card, such as an ID number, name and face photograph. The function name of the card, the installed application name, and the brand name may be displayed. Further, it is possible to display the background of the design of the card itself.

The display means 3 is actually an interface and driver software for displaying image data on the display section 2.

The information recording unit 4 is an EEPROM (Electrically Era) which is actually a non-volatile memory.
save Programmable Read-O
nly Memory), part of which is the display unit 2
The image recording unit 7 records the image data to be displayed on.

The CPU 5 executes various processing programs recorded in the program recording section 6.
The information recording unit 4 and the RAM are used as necessary when executing the processing program.

The program recording section 6 records a processing program executable by the CPU 5. ROM (Read Only Memory) recorded during card manufacturing
y) or an EEPROM to be loaded and used like a smart card capable of mounting multiple applications.

In the program recording section 6, processing programs such as the pattern generating means 8, the display changing means 9, the authenticating means 10 and the releasing means 11 are recorded.

The pattern generating means 8 uses one of a reversal pattern for reversing a part of the image data, a mosaic pattern for editing in a mosaic pattern, a marking pattern for adding marks such as X marks and diagonal lines, or a combination thereof. To generate. A fill pattern that fills the entire image with black is also possible.

The display changing unit 9 generates the image data recorded in the image recording unit 7 and the pattern generating unit 8 when the authenticating unit 10 or the host system determines that the card is illegally operated. The image synthesizing unit that makes the state of the card recognizable by synthesizing the formed pattern, or the image non-displaying unit that hides the displayed image.

The authentication means 10 compares the input PIN with the PIN value recorded in the information recording section 4, and records in the information recording section 4 the information of the fingerprint recognized by the fingerprint sensor installed in the terminal. It is to confirm whether or not the user of the card is an authorized user by a method such as comparing the fingerprint information stored therein.

The canceling means 11 actually stops the operation of the image synthesizing means or the image non-displaying means in response to a canceling command from the host system, and again displays the image data on the display section 2 in a visually observable state. is there.

Next, a method of using the IC card 1 of the present invention and its operation will be described by taking an ID card with a facial photograph as the contact type IC card shown in FIG. 2 having a credit function as an example. I
The C card 1 records and displays in the information recording unit 4 a facial photograph of the owner of the card and image data of the function of the IC card, and the program recording unit 6 realizes a credit function and an entrance / exit management function. The program is recorded.

FIG. 4 is a flow chart when the credit function of the IC card 1 is used. The user inserts the card into the terminal and uses the keyboard of the terminal to
Input IN. The entered PIN value is the authentication means 10
Is sent to the terminal and compared with the PIN value recorded in the information recording unit, and if they match, the fact that the authentication of the person has succeeded is transmitted to the terminal, and the credit function can be used.

PI input more than a predetermined number of times
When the value of N is different from the recorded PIN value, the fact that the authentication has failed is transmitted to the terminal, and the credit function is locked. At the same time, the pattern generating means 8 generates a marking pattern of, for example, an X mark, and the display changing means 9 synthesizes the image data showing the credit function with the generated X mark as shown in FIG. indicate.

When a fraudulent act such as PIN input is performed a specified number of times or more, the credit function is locked and disabled as in the conventional case, and at the same time, the image of the credit function is marked with an X mark. It can be visually judged that the credit function cannot be used.

FIG. 5 is a flow chart when the entrance / exit management function of the IC card 1 is used. A case where a fingerprint sensor is attached to a terminal installed on a door in a place requiring high security will be described as an example. The fingerprint sensor includes a full capture type and a slide type, but the fingerprint sensor is not limited to either type.

The user inserts the card into the terminal and puts his finger on the fingerprint sensor. The fingerprint sensor scans the fingerprint to obtain fingerprint information such as fingerprint characteristics. The acquired fingerprint information is
Compared with the fingerprint information sent to the authentication means 10 and recorded in the information recording unit 4, if they match, the fact that the authentication of the person is successful is transmitted to the terminal, and the door is unlocked.

If the fingerprint information does not match, the fact that the authentication has failed is transmitted to the terminal, and the entry / exit management function is locked.
The door remains locked. At the same time, the pattern generating means 8 generates a marking pattern of, for example, an X mark, and the image locking means 9 synthesizes the image data of the face photograph of the cardholder with the generated X mark, as shown in FIG. It is displayed on the display unit 2.

When an illegal act that is used by a person different from the original owner is performed, entry / exit is not permitted as in the conventional case, and the entry / exit management function is locked to make it unusable. Since the image of the photograph of the owner's face is marked with an X, it can be visually identified that the person other than the owner has illegally used it.

The display changing unit 9 may be an image non-display unit that does not display image data on the display unit 2 as long as it can visually determine the state of the card such as an illegal operation on the card.

When the IC card 1 is returned to the rightful owner,
When the lock is released and it can be used again, a release command is received from the terminal or the host system, and the release means 11
Stops the execution of the display changing means 9, retrieves the image data from the information recording section 4 again, and causes the display means 3 to display the image on the display section 2.

The display changing means 9 can change the contents to be displayed without directly rewriting the image data recorded in the information recording section 4. Further, the releasing means 11 gives a predetermined releasing instruction to change the display changing means 9. The display can be restored by simply stopping the change of the display content by and displaying the image data recorded in the information recording unit 4 again.

FIG. 8 shows an example in which the entire surface of the non-contact type IC card is the display section 2. In this manner, it is possible to generate a pattern that completely covers the entire display 2 so that it can be determined at a glance that the card has been tampered with.

The present invention has been described above in detail based on the embodiments. However, the IC card according to the present invention is not limited to the above-described embodiments, and does not depart from the gist of the present invention. It goes without saying that various changes can be made in.

[0053]

As described above, according to the IC card of the present invention, the terminal having the function of checking the state of the card by providing the display unit, processing the image to be displayed and displaying the processed image on the display unit is provided. It is possible to visually determine that the card has a possibility of unauthorized use without checking.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram of an IC card of the present invention.

FIG. 2 is an explanatory diagram in the case of providing a display unit on a contact type IC card.

FIG. 3 is an explanatory diagram of a case where a display unit is provided in a non-contact type IC card.

FIG. 4 is a flowchart when the credit function of the IC card of the present invention is used.

FIG. 5 is an explanatory diagram for locking the credit function of the IC card of the present invention.

FIG. 6 is a flowchart when using the IC card entry / exit management function of the present invention.

FIG. 7 is an explanatory diagram for locking the entry / exit management function of the IC card of the present invention.

FIG. 8 is an explanatory diagram for locking the entire surface of the IC card of the present invention.

[Explanation of symbols]

1 IC card 2 Display 3 display means 4 Information recording section 5 CPU 6 Program recording section 7 Image recording section 8 pattern generation means 9 Display change means 10 Authentication means 11 Release means

Claims (15)

[Claims] 1. An IC card having a display unit capable of electrically displaying on at least one of a front surface and a back surface, the display unit displaying visible image data on the display unit, and the visible image data. And a display changing unit that processes the item and changes the display content indicating the state of the card. 2. The IC card according to claim 1, wherein I
An IC card, wherein the non-volatile information recording unit included in the C card includes an image recording unit that records image data of a visible image. 3. The IC card according to claim 1 or 2, further comprising pattern generating means for generating a pattern used to change display contents indicating a state of the card. 4. The IC according to any one of claims 1 to 3.
An IC card, comprising a card, and authentication means for confirming whether or not the card is an authorized user or operation. 5. The IC card according to claim 1, wherein the display changing unit determines that the authentication unit or the host system has performed an unauthorized operation on the card. An IC card, which is an image synthesizing unit for synthesizing the image data recorded in the information recording unit and the pattern generated by the pattern generating unit to make the state of the card recognizable. 6. The IC card according to claim 1, wherein the display changing unit determines that the authentication unit or the host system has performed an unauthorized operation on the card. An IC, which is an image non-display means for making the state of the card recognizable by not displaying the image data to be displayed on the display unit.
card. 7. The IC according to claim 1.
A canceling unit that cancels the change of the display content by the display changing unit and returns the image data to a visually recognizable form by a cancel command.
C card. 8. The IC according to claim 1.
In the card, the pattern generation means, any one of an inversion pattern for inverting a part of the image data, a mosaic pattern for editing in a mosaic pattern, a marking pattern for adding a mark such as an X mark or a diagonal line, or An IC card characterized by generating a combination. 9. The IC according to any one of claims 1 to 8.
An IC card, wherein the image data is image data of a visible face photograph. 10. I according to any one of claims 1 to 9.
An IC card, which is a C card, wherein the image data is image data obtained by visualizing visible text information. 11. The IC card according to claim 1, wherein the visible text information is
Information relating to the holder of the IC card including the ID number,
An IC card characterized by 12. The IC card according to claim 1, wherein the visible text information is
Service name or IC that can be enjoyed by IC card
The name of the application installed on the card, or
An IC card characterized by having both a service name and an application name. 13. The IC card according to claim 1, wherein the image data is a background design of the IC card. 14. The IC card according to claim 1, wherein the display unit is an electronic display. 15. The IC card according to claim 1, wherein the display unit is an electronic paper having the features of an electronic display and paper.