JPH1131209A - Card and card authentication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent illegal use such as forgery by providing the areas of light transmissive recessed parts or projecting parts that can detect the position of the area of visual information in the area of visual information for identifying an individual at the surface of a card and extracting the positions of the areas with video information. SOLUTION: A photograph 8 is printed on the visual recognition area 8a of the IC card 1. The two projecting parts 8b and 8c of about 100-400 μm are provided in accordance with the eyebrow parts on the surface. The secondary pressure sensitive element 10a of a pressure sensitive detector 10 is pressed on the area of the photograph 8 and the positions of the projecting parts 8b and 8c are read as position pattern data. On the other hand, the photograph 8 adhered to the IC card 1 is read by a digital camera as video information. Identification video data and identification position data, which are previously stored in EEPROM of the IC card, are collated with video data and position pattern data, which are obtained, so as to detect matching. Thus, the card can be certified or the use evidence of the card can be obtained. High security in original certification can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card and a card authentication system, and more particularly, to an IC card having visible information for identifying an individual, such as a photograph, a signature character, and a real seal, for identifying the individual. In an IC card authentication system that reads visible information as video information (image data) and authenticates the IC card with this information, it prevents unauthorized use such as forgery of the card, improves security in authentication, and improves transaction security. The present invention relates to an IC card authentication system that can ensure security.

[0002]

2. Description of the Related Art Under card authentication, commercial transactions using a credit card or the like, withdrawal of bank deposits using a cash card, or the like, or electronic commerce using the Internet is performed. Cards are being used. The problem with this type of card is counterfeiting and unauthorized use. In order to prevent such a situation, there has been conventionally known an IC card authentication system in which a fingerprint or a voiceprint is recorded in a memory of an IC card as personal characteristic data and collated. As one of the techniques, a technique of scanning and reading a fingerprint or the like of a card user with a scanner, and collating the obtained fingerprint image with fingerprint data sent from an IC card is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-153796. This is described in, for example, Japanese Unexamined Patent Publication No. 61-260881 and is known. By performing such processing, card authentication is performed with higher security than collation of the personal identification number.

Also, there have been proposed cards which form images using bolograms on the surface of the card, and specially printed cards. For example, in the technology disclosed in Japanese Patent Application Laid-Open No. 4-338593, there is a technique in which a transparent protective layer having irregularities such that an image is formed by a thermal transfer method in an identification card or the like is provided on the image forming surface. Also, Japanese Patent Application Laid-Open No. Hei.
No. 3,883, No. 3883 secures security against card forgery and unauthorized use by acquiring image data from a card, converting the image, and collating the image data to perform card authentication.

[0004]

Now, even if face photo information or the like that can be confirmed by a person is displayed on a card, personal information such as a photo can be replaced or forged, so that it is illegally used. If the forger uses the forgery, visual confirmation becomes impossible. In particular, in the above-described method, since characteristic information such as a personal photograph of a person is simply digitized and collected, if the information is collected by another person, falsification is easy and security is improved. Not enough. In addition, at present, when a transaction is performed using an IC card, there is no evidence of use if a problem occurs after the card processing. for that reason,
Unable to distinguish between unauthorized and legitimate users, making it difficult to confirm and track unauthorized use. Such a decrease in security is the same for cards having other personal characteristic data. SUMMARY OF THE INVENTION An object of the present invention is to solve such problems of the prior art, and to prevent unauthorized use such as forgery of a card, improve security in authentication, and secure transaction security. It is an object of the present invention to provide a card and an IC card authentication system which can perform the above.

[0005]

The features of the card and the IC card authentication system of the present invention for achieving the above objects include a photograph for identifying an individual, a sign character,
On a card that has an area of visible information that identifies the individual, such as a real seal, on the surface, the visible information is read as video information, and the card is authenticated based on this, and its position is detected in the area of visible information A transparent or transparent region is formed in the visible information region, and the position of the concave or convex region is collected together with the video information.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In this manner, visual information for identifying an individual, such as a photograph, a sign character, and a real seal, which is printed or affixed or engraved on a card, is read as video information. Thus, the video information of the visible information is obtained, and at the same time, the position information of the concave or convex area in the visible information area is simultaneously obtained.
Therefore, card authentication or card use evidence can be obtained in the relationship between these two types of information. In this case, it is difficult to falsify such that the position of the concave or convex area set in the relationship between the visible information and this information is accurately matched. By scrambled the information and predetermined information such as visible information and printing it out on a slip or the like, if a problem occurs after card processing, it can be left as evidence of use. As a result, it is possible to discriminate the contents of use between the unauthorized user and the authorized user based on evidence or the like owned by the authorized user.

[0007]

FIG. 1 is an explanatory view of an embodiment of an IC card in an IC card authentication system to which the present invention is applied, and FIG.
FIG. 3 is a block diagram showing an embodiment of an IC card authentication system using the IC card of FIG. 1, and FIG. 3 is a block diagram showing another embodiment of an IC card authentication system using the IC card of FIG. . In the plan view and the right side view of FIG. 1A, reference numeral 1 denotes an IC card on which a photograph 8 is printed (or pasted). Photo 8
Is a face photograph of the person, but may be any visible information for identifying an individual who uses the card, and may be a sign character for identifying the individual, a real seal, or the like. In addition,
1a is a magnetic stripe, 1b is a built-in IC, 1
c is a character such as a user name.

[0008] Photo 8 is a visual confirmation area 8 of the IC card 1.
a, and two projections 8b and 8c are provided on the surface thereof corresponding to the two eyebrows, respectively. The projections 8b and 8c are approximately 100 μm to 400 μm. The reason why the image is provided in the eyebrow portion is that by providing the image in a portion having a high spatial frequency in the image, it is difficult to recognize that there is unevenness when observed from the outside, and the acquired image data is not easily affected by the unevenness. The protruding portions 8b and 8c may be concave portions of about 100 μm to 400 μm, and may be provided with substantially the same size corresponding to the range of the eyebrows 8b and 8c. At this time, the thickness of the IC card 1 is 0.76 mm as a conventional one.
(760 μm) or less.

The projections 8b and 8c are pressed against the area of the photograph 8 by the two-dimensional pressure-sensitive element 10a of the pressure-sensitive detector 10, and the position is read as data by pressing the area. The pressing mechanism is not shown. Two-dimensional pressure-sensitive element 10a
Is a sensor that has a detection area slightly larger than the area of the size of the photograph 8 and detects irregularities in pixel units corresponding to bitmap image data as video by the digital camera 11 described later. This serially generates a signal having a voltage level corresponding to the pressure. Therefore, when contacting the photograph 8, a high-level voltage signal is generated at the positions of the protrusions 8b and 8c,
Protrusions 8b and 8c based on the upper right corner of photograph 8 in FIG.
Is generated as bit pattern data corresponding to the position. The pressure-sensitive detector 10 includes a pressure-sensitive element 10a, a sense signal drive / readout circuit 10b provided therein, a binarization circuit 10c, and a memory 10d. , The position data of the projections 8b and 8c based on the upper right corner of the photograph 8 is generated and stored in the memory 10d. In addition,
One bit of each bit data when binarized by the binarization circuit 10c corresponds to one pixel of the bitmap image data, and thus becomes the position data of the protrusions 8b and 8c. More specifically, this data is stored in the projections 8b, 8
The bit pattern is generated as “1” in the range of “c”, “0” in other areas, and “1” in the reference position. This is the position data here, and is hereinafter referred to as position pattern data.

As shown as a block on the left side of FIG. 2, the IC card 1 has therein a processor 2 comprising system control logic and a CPU, a ROM 3 for storing system programs executed by the CPU, and a work area. A certain RAM 4, various application programs and an EEPROM 5 as a data storage area thereof, and I
/ O port 6, which are interconnected by a bus 7. The ROM 3 has a system program 3a,
Comparison data generation program 3b, collation processing program 3
c, reception processing program 3d, response program 3
e, etc. are provided. The EEPROM 5 also includes identification video data 5a serving as a comparison reference serving as a comparison reference for photograph collation, and identification position data 5b serving as a comparison reference.
Etc. are stored.

Reference numeral 9 denotes an IC card reader / writer, which is a digital camera 11 which is a reading device for reading the photograph 8 attached to the IC card 1 as image information, in addition to the pressure-sensitive detector 10 described above. And data processing device 12
Etc. The data processing device 12 includes an MPU 13
And a memory 14, and an IC card interface 15 and a printer 16 as IC card communication interfaces.
1 are mutually connected by a bus 17.

The pressure-sensitive detector 10 and the digital camera 11
The digital camera 1 is controlled by the data processing device 12.
1 sends video data (bitmap image data) of the photograph 8 to the data processing device 12. After the video data is collected by the digital camera 11, the pressure-sensitive detector 10 contacts the IC card 1 and
The position pattern data of the protruding portions 8b and 8c is stored in.
The data processing device 12 stores the position pattern data in the memory 1
0d, and the position pattern data together with the video data from the digital camera 11
It is sent out via the C card interface 15 and waits for the collation result from the IC card 1.

In the IC card 1, the EEPROM
5 stores identification video data 5a and identification position data 5b. The identification video data 5a is comparison reference data obtained by performing scramble conversion by applying a predetermined data conversion parameter to digital data of video information obtained by photographing the photograph 8 by the digital camera 11. The identification position data 5b is data indicating a position where “1” exists in the position pattern data as a position on the video data with reference to the video data (bitmap image data). This means that the video data (bitmap image data) is counted from the reference position (upper right corner), and the position where the bit pattern corresponding to the position of the projections 8b, 8c exists, and in this case, the position where "1" exists As a count value. Alternatively, this is coordinate position data indicating from the bitmap image and the position pattern data, the coordinate position of the projection 8b, 8c at the coordinate position of the bitmap image and the end point thereof. Is also good.

These registrations are performed based on the video data and the position pattern data transferred by the data processing device 12 via the IC card interface 15 as they are. Among them, the identification video data 5a is obtained by performing scramble conversion on the video data according to a predetermined rule indicated by the conversion parameter, and the identification position data 5b refers to the position pattern data and converts the video data to the top of the projections 8b and 8c. It is generated by counting up to the position and up to the position where the respective protrusions 8b and 8c end. Alternatively, coordinates are separately calculated. At this time, when the IC card is issued, the same photograph is read by a digital camera to generate video data, and the pressure-sensitive detector 10 simultaneously generates position pattern data to indicate a position where the position pattern data exists in the video data. Data may be generated or calculated to register the identification video data 5a and the identification position data 5b.

The scrambled conversion data may be, for example, a data conversion parameter which becomes filter data for extracting only data at a specific video position of one frame of video data of the digital camera 10. Also, a flag “1” is set at a specific position in the bit string, and the bit “1” is set.
Is data that passes through or is a blocking bit. Alternatively, the data may be data compressed according to a predetermined rule. The data conversion parameter in this case is a compression function. Also, a code can be obtained from the bitmap by the quadtree method. Further, the image data may be divided into regions and the brightness in each region may be converted into a digital value. The data conversion parameter in this case is composed of data of a region to be divided and data for obtaining the brightness of the region.

Here, the comparison data generation program 3b
Is a program for calculating or generating data corresponding to the identification video data 5a and the identification position data 5b, respectively. The video data received from the IC card reader / writer 10 is scrambled and converted to generate identification video information. Then, the identification position information is generated from the video data (bitmap image data) and the bit pattern data indicating the positions of the projections 8b and 8c.
This is a program stored in AM4. The collation processing program 3c calls the comparison data generation program 3b and converts the identification video information stored in the RAM 4 into the identification video data 5
a (comparison reference data) to detect these coincidences, and further, to compare the identification position information stored in the RAM 4 with the identification position data 5b to detect these coincidences. This is a program for transmitting the detection result to the IC card reader / writer 9 via the response program 3e.

The IC card 1 receives video data and position pattern data from the IC card reader / writer 9 via the IC card interface 17 as electronic messages. Then, it is stored in the RAM 4. Next, the processor 2 executes the comparison data generation program 3b to execute the EEP
The identification image information and the identification position information are generated from the ROM 5 and stored in the RAM 4 again. Then, the collation processing program 3c is called. Then, the processor 2 executes the collation processing program 3c to detect a match between the identification image information stored in the RAM 4 and the identification image data 5a, and a match between the identification position information and the identification position data 5b, respectively. As a result, for example, an OK message is sent to the IC card reader / writer 9 as a match. If they do not match, an NG telegram response is made. It should be noted that the order of the match detection may be such that the match between the identification position information and the identification position data 5b is detected first. If any one of them does not match, the IC card responds with a mismatch.

FIG. 3 shows another embodiment in which the data processing device 12 of the IC card reader / writer 9 detects the coincidence of the identification position information, and the IC card 1 detects the coincidence of the identification image information. It is. Therefore, the data processing device 1
The second memory 14 is provided with a comparison data generation program 14a and identification position data 5b. Further, the memory 14 is provided with a coincidence detection program 14b and a transaction evidence generation program 14c. The MPU 13 reads the position pattern data from the memory 10d, obtains video data from the digital camera 11, stores them in the memory 14, and executes the comparison data generation program 14a to generate identification position information. The generation of the identification position information is the same as described above. Then, the match detection program 14
By executing b, the identification position information is compared with the identification position data 5b, and when they do not match, the processing is stopped, and only when they match, only the video data is sent to the IC card 1.

In the case of this embodiment, the comparison data generation program 3b on the IC card 1 side uses an IC card reader
This is a process of only scrambling the video data received from the writer 10 to generate identification video information and storing it in the RAM 4. Match detection is also performed only for the identification video information and the identification video data 5a. When these match, the IC card 1 sends an O to the IC card reader / writer 9.
Give K response. The transaction evidence generation program 14c
The predetermined processing is completed in response to an OK response from the C card 1, and is activated and executed by the MPU 13 when the transaction is completed. The MPU 13 scrambles the bitmap image data of the video data and the position pattern data to generate encrypted data, and
To print on a slip or the like. The slip is usually duplicated on two sheets and stored in a card holder, a system administrator or a store. Note that the scrambled object with the position pattern data at this time is not limited to the bitmap image data, but may be any predetermined card-specific data. By the way, particularly, in this embodiment, since the data processor 12 detects the coincidence with the identification position data 5b, there is an advantage that high-speed processing can be expected.

Next, the protrusions 8b and 8c formed on the photograph 8 of the IC card 1 will be described in detail.
An image such as a face photograph is printed in a visual check area 8a corresponding to the position of the photograph 8 in FIG. The shape of the card 1 is shown in FIG.
The card thickness t1 in a part or a plurality of parts in a
A concave portion or a convex portion is provided under the condition that t1 = to + .DELTA.t or t1 = to-.DELTA.t with respect to the card thickness t0 and the thickness difference .DELTA.t outside the visual confirmation area 8a. this house,
A particularly suitable card for practical use is one that satisfies t1 = to + Δt and the thickness difference Δt satisfies to / 10/10 <Δt <to. Further, it is desirable that the card thickness t0 in the area other than the visual check area 8a on the card is 0.76 mm or less in order to facilitate compatibility with a conventional card processing system. For example, to = 0.76 mm
Is considered, to / 10 = 76 μm, and Δt is 76
If the size is less than μm, the margin for the adhered substance such as dirt on the card becomes narrow, which is not preferable. On the other hand, to
If Δt is equal to or greater than 0.76 mm, forgery can be performed relatively easily, which is also undesirable. So, to
= 0.76 mm, t1 = 1.06 mm, Δt = 0.3 m
m, a good result was obtained.

Regarding the method of manufacturing such a card,
The surface of the card 1 is made of synthetic resin, and the visual confirmation area 8a
After printing on the card 1, a portion where no thickness difference is given is covered with a hard mask plate (metal or the like), and a local stress is applied to protrude the portion to locally change the thickness difference Δt to the card 1. Give to. Alternatively, pressure is applied only to the concave portion. Further, the visual confirmation area 8a
At the time of printing on a surface, a local printing is performed by using only a specific portion of a pigment having a particle size of at least twice as large as the surrounding surface roughness, and a portion having a local thickness difference Δt is formed. Can be formed. Only local portions printed with a pigment having a particle size at least twice as large as the surface roughness of the surroundings become concave portions, and the thickness of the card can be made different from that of the surroundings. It can be detected without being buried in the surface roughness.

In determining the position of the portion where the thickness difference Δt is different, it is preferable to determine the position corresponding to the spatial frequency of each block obtained by dividing the image. It is preferable that the larger the spatial frequency of each block obtained by dividing the image is, the larger the spatial frequency is. This is because it is possible to use human vision that it is difficult to notice even if there is noise in a portion having a high spatial frequency, for example, a contour or an edge. That is, when the face photograph in the visual check area is compared with the face of the person who actually uses the card with the naked eye, there is no trouble such as erroneous recognition. For example, when a seller checks the face of a buyer who pays a credit card, the risk of erroneous recognition is small even though there is a thickness difference Δt in a part or a plurality of parts of the visual check area.

Next, output of evidence using a card will be described. According to the present invention, the position data corresponding to the position information of the portions having different thickness differences Δt can be output as evidence to both the card owner and the system administrator. In the embodiment shown in FIG. 3, the printer 16 scrambles the position data on a slip or the like and prints it. In this case, as described above, after the position data corresponding to the position information of the portion where the thickness difference Δt is different is encoded by performing arithmetic processing together with the unique information recorded on the recording medium of the card, It may be output as evidence to both the card owner and the system administrator. In addition, the evidence can be output on paper, and additionally, the evidence information can be recorded in a recordable storage area of the recording medium of the card. Normally, the card 1 has the magnetic stripes 1a and I
Since the C1b is mounted, evidence information can be recorded on the magnetic stripe 1a and the IC 1b. As a recording medium, at least one of a magnetic recording medium, an IC, and an optical recording medium only needs to be mounted, and a combination different from that of this embodiment can be used.

As described above, in the embodiment, a digital camera is taken as an example for collecting video data (bitmap image data) of a photograph or the like. However, the present invention is not limited to a digital camera, but may be an image scanner or the like. Any device that can collect image data may be used. Of course, the bitmap image may be color data. In addition, the pressure-sensitive detector 1
0 may simply detect the surrounding area if the detection position is specified, for example, if it is characterized as an eyebrow part. The detection signal in this case is
This occurs based on the position corresponding to the detection reference position. In such a case, the position data may be small. The data conversion parameter of the embodiment is the E card of the IC card.
This is stored in the EPROM so that the contents of the data conversion parameter 5b can be changed for each card to be issued. Therefore, the memory may be a rewritable nonvolatile memory, and a flash memory or the like may be used. Further, data transmitted from the IC card reader / writer to the IC card or vice versa may be further encrypted data transmitted from the IC card to the IC card reader / writer.

[0025]

As described above, according to the present invention, an individual, such as a photograph, a sign character, or an actual seal, for identifying the individual printed or pasted or engraved on the card is identified. By reading the visible information as the video information, the video information of the visible information is obtained, and at the same time, the position information of the concave or convex area in the visible information area is simultaneously obtained. Card authentication or card use proof can be obtained. As a result, higher security can be ensured in personal authentication.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of one embodiment of an IC card in an IC card authentication system to which the present invention is applied;
(A) is a plan view and a right side view thereof, and (b) is a side view in a hand length direction thereof.

FIG. 2 is a block diagram showing an embodiment of an IC card authentication system using the IC card of FIG. 1;

FIG. 3 is a block diagram showing another embodiment of the IC card authentication system using the IC card of FIG. 1;

[Explanation of symbols]

1 IC card, 2 processor, 3 ROM, 4 R
AM, 3a: system program, 3b, 14a: comparison data generation program, 3c: collation processing program, 3
d: reception processing program, 3d: response program, 5a: identification video data 5b: identification position data, 6,
13: I / O port, 7: bus, 9: IC card reader / writer, 10: pressure-sensitive detector, 11: digital camera,
12 data processing device, 13 MPU, 14 memory
14b: Match detection program, 14c: Transaction evidence generation program, 15: IC card interface.

Claims (10)

[Claims] (1) a photograph, a sign character,
In a card having a visible information area for identifying the individual, such as a real seal, on the surface, the visible information is read as video information, and the card is authenticated based on the read information. Having a translucent concave or convex region that can be detected in the visible information region,
A card in which the position of the concave or convex region is sampled together with the video information. 2. The method according to claim 1, wherein the concave or convex portion includes one image information.
1 when taken as a bitmap image of the screen
2. The card according to claim 1, wherein the position is sampled with an accuracy corresponding to the resolution of the pixel. 3. The card is an IC card, wherein, when the thickness of the card is t, the thickness of the visible information area is t ± Δt, and
3. The card according to claim 2, wherein the thickness of the card does not impair the visual image. 4. The card according to claim 3, wherein said Δt is in a range of t / 10 <Δt <t. 5. A photograph, a sign character,
A card having on its surface a region of visible information that identifies the individual such as a real seal and a translucent concave or convex region whose position in the region of visible information can be detected; and A reading device that generates an image bit pattern for one screen read from a card, a position detector that detects the position of the concave or convex region in the visible information region, and an output of the position detector and the concave or convex portion. Position information generating means for generating position information of the concave portion or the convex portion based on the bitmap image from the data of the bitmap image of the convex portion, and position information in which the generated position information is stored in advance. A card authentication system comprising matching means for matching. 6. A photograph, a sign character,
A card having on its surface a region of visible information that identifies the individual such as a real seal and a translucent concave or convex region whose position in the region of visible information can be detected; and A reading device that generates an image bit pattern for one screen read from a card, a position detector that detects the position of the concave or convex region in the visible information region, and an output of the position detector and the concave or convex portion. A position calculating unit that calculates the position of the concave portion or the convex portion based on the bitmap image from the data of the bitmap image of the convex portion, and an output unit that outputs the calculated position information for comparison. Card authentication system. 7. The information processing apparatus according to claim 1, further comprising a conversion unit that scrambles or encrypts the position information calculated by the position calculation unit, wherein the verification unit or the output unit checks the information converted by the conversion unit. 7. The card authentication system according to claim 5, wherein the card authentication system outputs. 8. An identification video information generating device for generating identification video information by applying predetermined data conversion data to data of the bitmap image obtained from the reading device. 6. The card authentication system according to claim 5, further comprising means for checking the identification video information in addition to the position information. 9. The collating means is built in the IC card, and transfers the identification information generated by the identification video information generating means and the position information generated by the position information generating means to the IC card. The card authentication system according to claim 8, wherein the authentication is performed. 10. The card authentication system according to claim 6, wherein said output means scrambles said position information with predetermined other information and outputs the scrambled information to paper.