JPH11259623A - Structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure which has high security for stored information and is advantageous in the manufacture cost. SOLUTION: An oriented pattern based upon the fluid orientation of an IC card 33 is read by an image pickup part 18 and image data used for identification are obtained from the read data through an A/D conversion part 19 and a feature extraction part 20. Information to be stored in an IC chip 34 of the IC card 33 is inputted from an input/output part 43. Random data generated by an information conversion part 41 on the basis of the image data and the input information are written into the IC chip 34 of the IC card 33 through a read and write part 40. The image data and the random data, on the other hand, are written into a storage part 27 of a registration management device 25 through a write part 26. At the time of collating, the information read out of the IC chip 34 is collated in a comparison part 29 with the information read out of the storage part 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure, and more particularly to a structure in which various kinds of information are stored in a writable and readable manner.

[0002]

2. Description of the Related Art In a conventional structure such as an IC card in which various information is written and read therein, the integrity of stored information is extremely important. In order to ensure this integrity, for example, there has been proposed an IC card in which a magnetic fiber is randomly mixed in a scanning area of the IC card and information unique to the card is obtained by magnetically reading the magnetic fiber. . Then, the unique information is encoded, and the stored information is encrypted based on the code and written to the IC chip, or the stored information is read and decrypted.

[0003]

In the above-mentioned structure, it is necessary to prepare a magnetic fiber or the like in order to obtain its unique information, and to manually operate the structure so that the arrangement is different for each structure. It was disadvantageous in terms of cost. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a structure that has high integrity of stored information and is cost-effective during manufacturing.

[0004]

In order to achieve the above object, the invention according to claim 1 is directed to an orientation pattern based on the flow orientation of a resin structure, and by reading the orientation pattern, individual identification information is obtained. It is provided with an orientation pattern that can be acquired, and an information storage unit that stores information generated based on the individual identification information acquired from the orientation pattern in a writable and readable manner.

[0005] With this configuration, the orientation pattern is associated with the information in the information storage unit. The orientation pattern includes read image data and an image code corresponding to the image data. According to a second aspect of the present invention, in the configuration of the first aspect, the stored information includes information encrypted using the acquired individual identification information as an encryption key.

The same information is encrypted and stored as different information based on individually different individual identification information. According to a third aspect of the present invention, in the configuration of the first or second aspect, the structure is covered with a resin molded body, and the orientation pattern includes the orientation pattern of the resin molded body itself.

[0007] Since the orientation pattern of the resin molded body that covers the structure itself is used, it is not necessary to separately add an orientation pattern. According to a fourth aspect of the present invention, in the configuration of the first or second aspect of the present invention, the alignment pattern is added to the constituent members constituting the structure. With this configuration, there is no restriction on the selection of the structural members.

According to a fifth aspect of the present invention, in the configuration of the second aspect, the structure includes an IC card, and the information storage unit includes an IC chip. With this configuration, the integrity of information stored in the IC chip of the IC card is enhanced.

[0009]

As described above, according to the first aspect of the present invention, since the orientation pattern is associated with the information in the information storage section, individual identification information is required to change the storage information in the information storage section. This prevents information tampering. According to the second aspect of the present invention, in addition to the effect of the first aspect, in order to change the stored information, it is necessary to know not only the individual identification information but also the cryptographic rules, thereby further preventing tampering. The effect is improved.

According to a third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, the resin molded body covering the structure itself has a role of a unique orientation pattern.
It becomes a reasonable alignment pattern. Further, it becomes difficult to change the orientation pattern, and the reliability is further improved. According to the fourth aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, since there is no restriction on the selection of the structural members, the degree of freedom in material selection is increased, and the identification reliability of the structure is improved. Is improved.

According to the invention described in claim 5, in addition to the effect of the invention described in claim 2, the integrity of information stored in the IC chip of the IC card is enhanced, and the reliability of preventing tampering is enhanced.

[0012]

FIG. 1 is a plan view showing one surface of a resin structure on which the present invention is based. Referring to the figure,
The resin structure 11 is manufactured by injection molding a molten resin obtained by kneading a fibrous material with a molten resin. Therefore, on the surface of the resin structure 11, a large number of fibrous materials 13 randomly oriented by the flow orientation at the time of injection molding are dissolved in the transparent or translucent resin 12. Since the orientation of the fibrous material 13 is caused by the flow orientation, even if it is injection-molded by the same mold at the same time, it is not oriented in the same shape. Therefore, the cellulose 13 contained in the resin 12
By optically reading the orientation pattern of the resin structure 11, the resin structure 11 can be identified as an individual.

FIG. 2 is a diagram in which a predetermined area is extracted from the orientation pattern of the fibrous material shown in FIG. As described above, in each of the resin structures 11, the cellulose 13
Although the orientation pattern is different, when reading the orientation pattern optically, it is preferable to set a specific area and read the orientation pattern in this area from the viewpoint of limiting the data amount and improving the matching accuracy. Therefore, in this embodiment, as shown in FIG. 1, the origin O is defined as the corner of the lower right corner of one surface of the resin structure 11, and the distance A is taken in the horizontal direction and the distance B is taken in the vertical direction. With the point taken as the center X, an area within a predetermined range from that point is set as an extraction area 15. Therefore, the orientation pattern of the fibrous material 13 in the extraction area 15 is as shown in FIG. Therefore, the orientation pattern of the fibrous material 13 appearing in the extraction area 15 is optically read and binarized, whereby image data for identifying an individual can be obtained.

FIG. 3 is a block diagram schematically showing a configuration of a reading device and a registration management device for individually identifying the resin structure shown in FIG. Referring to the figure, reading device 17 is entirely controlled by CPU 22,
Specifically, an imaging unit 18 for optically reading the extraction area 15 of the resin structure 11 and obtaining analog data,
An A / D conversion unit 19 for binarizing analog data obtained by the imaging unit 18 into digital data and an extraction area 15 of the resin structure 11 from the digital data converted by the A / D conversion unit 19. A feature extracting unit 20 for extracting corresponding image data, and a display unit 21 for displaying the image data and the like extracted when the image capturing unit 18 is positioned with respect to the resin structure 11 or the feature extracting unit 20 is used. Is done.

On the other hand, the registration management device 25 is entirely controlled by the CPU 31. Specifically, the registration management device 25 has an orientation pattern extracted by the feature extraction unit 20 of the reading device 17 for identifying the resin structure 11 as an individual. A storage unit 27 for storing image data of the image data, a writing unit 26 for writing image data to the storage unit 27, a reading unit 28 for reading image data from the storage unit 27, and a storage unit A comparison unit 29 for comparing and matching the image data read from the image data 27 and the image data extracted by the feature extraction unit 20, and a display unit 30 for displaying a comparison result by the comparison unit 29. .

FIG. 4 is a flowchart showing the processing contents of the reading device and the registration management device shown in FIG. The registration process and the collation process of the resin structure will be described with reference to the drawings. First, in step S50, an orientation pattern based on the orientation of fibrous materials that has appeared on the surface of the resin structure 11 is photographed by the imaging unit 18 including a CCD camera or the like on the resin structure 11. The analog data of the orientation pattern thus obtained is binarized by the A / D converter 19 and converted into digital data (S
51). Next, the feature extraction unit 20 sets an area to be extracted for the binarized digital data (S
52), image data included in the extraction area is extracted as characteristic data of the resin structure 11 (S53).

Next, in step S54, it is determined whether or not to register the extracted image data. When the registration processing is performed (YES in step S54), the extracted image data is registered as identification information in the storage unit 27 via the writing unit 26 of the registration management device 25 (S5).
5). In this way, the registration process is completed by reading the characteristic data of each manufactured resin structure 11 and recording the read image data in the storage unit 27 of the registration management device 25.

Next, a description will be given of a process of checking whether or not the resin structure 11 to be identified matches the already registered resin structure after all the image data as the identification data are registered. In this case, the processes in steps S50 to S53 are the same as those in the registration process. If collation processing is required here, NO is determined in step S54,
The flow moves to step S56 and subsequent steps. Then, in step S57, the image data stored in the storage unit 27 of the registration management device 25 is sequentially read by the reading unit 28,
The image data extracted from the read resin structure 11 is collated by the comparing unit 29 (S58). And
If any of the image data stored in the storage unit 27 matches the image data of the resin structure 11 extracted by the feature extraction unit 20, the resin structure 11 has been read and the registration process has been completed. Therefore, the resin structure 11 is determined to be genuine (S5).
9).

On the other hand, if any of the image data stored in the storage unit 27 does not match the image data extracted by the feature extraction unit 20, the resin structure 11 reads the image data previously and stores the data. Is not a registered one, it is determined to be a fake (S60). Resin structure 11 to be identified in this way
Is determined by the orientation pattern appearing on the surface of the resin structure 11 as to whether any of the previously manufactured ones or those other than the previously manufactured ones, It is possible to determine which one of them.

In the above-described embodiment, a transparent or translucent resin mixed with opaque fibers is used to clarify the orientation pattern. May be mixed and molded.
Further, instead of mixing fibers or the like, resins having different hues may be mixed, and these hue change patterns may be read to obtain image data as an alignment pattern.

Further, in the above embodiment, the resin structure is formed by injection molding. Alternatively, the resin structure may be formed by extrusion molding or blow molding. Needless to say, any resin structure can be used.
FIG. 5 is a diagram showing one surface of the IC card according to the embodiment of the present invention.

Referring to the figure, the IC card 33 is the first
A fibrous material 13 similar to the resin structure in the embodiment is covered with a randomly oriented resin 12 on its outer surface. An IC chip 34 in which various information is stored as card information is embedded in the IC card 33, and the information is read and written from the outside in a non-contact state or a contact state.

In this IC card 33, since the entire card is covered with the resin 12 in which the fibrous material 13 is randomly oriented, the extraction area 15 is set as in the first embodiment. Cellulose 13 in the area
Can be read as image data. As a result, an orientation pattern for individually identifying the IC cards 33 can be obtained.

FIG. 6 shows an IC according to an embodiment of the present invention.
It is a figure showing a modification of a card. Referring to the figure, this IC card 33 does not cover the entire card with a resin in which fibrous materials are randomly oriented.
5, a resin in which fibrous material is randomly oriented is embedded as a discriminating element 35 in a structural member 36 of the card at a position corresponding to 5. The configuration of the IC card 33 in this manner is effective when the entire card is covered with the resin in which the fibrous material is oriented, and a sufficient orientation pattern cannot be obtained due to restrictions on the use of fibrous material. That is, in the example of FIG. 6, even when the orientation of the fibrous material is restricted with respect to the structural member 36 as the entire card, a resin in which the fibrous material is not subjected to such restriction is used as the identification element 35. This is because a sufficient orientation pattern for identifying the IC card 33 can be obtained.

FIG. 7 shows an IC according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a schematic configuration of a reading device for reading and registering and managing a card, and a registration managing device. Referring to the figure, reading device 17 is entirely controlled by CPU 22, and specifically reads data stored in IC chip 34 embedded in IC card 33 or writes data in IC chip 34. And writing unit 40 for reading the orientation pattern appearing on the surface of IC card 33 and obtaining analog data
8, an A / D converter 19 for binarizing the analog data obtained by the imaging unit 18 and converting it to digital data, and data in the extraction area of the binarized digital data as image data. A feature extraction unit 20 for extraction, an input / output unit 43 for inputting / outputting predetermined information to / from the IC card 33, and image data extracted by the feature extraction unit 20 and input from the input / output unit 43 An information conversion unit 41 for creating random information based on the information; and a display unit 21 for displaying analog data captured by the imaging unit 18 and image data extracted by the feature extraction unit 20. Be composed.

On the other hand, the registration management device 25
Controlled by the PU 31, specifically, the reading device 17
A writing unit 26 for writing the image data extracted by the feature extraction unit 20 and writing random data generated by the information conversion unit 41, and a storage unit for writing various data by the writing unit 26 27,
A reading unit 28 for reading data from the storage unit 27; an information converting unit 42 for converting random data read by the reading unit 28 into desired information;
The image data extracted by the feature extracting unit 20 and the corresponding image data read from the storage unit 27 are compared, and the information converted by the information converting unit 41 of the reading device 17 and the corresponding A comparing unit 29 for comparing data read from the storage unit 27 via the reading unit 28 with data converted by the information converting unit 41;
And a display unit 30 for displaying the comparison result of the comparison unit 29.

FIG. 8 is a flowchart showing the specific contents of the registration processing and collation processing performed by the reading device and the registration management device in FIG. First, a registration process for an IC card will be described. When an IC card is manufactured, a registration process described below is performed before the IC card is handed to a user. First, in order to identify the IC card 33 as an individual, the imaging unit 18 photographs the peripheral area including the extraction area 15 of the IC card 33. The imaging data, which is analog data obtained by this, is A / D
The conversion unit 19 performs binarization processing and converts the digital data into digital data (S62). Then, in step S63,
Image data in the set area is extracted (S6).
3) Image data as an orientation pattern to be identified is extracted (S64).

If it is determined that the registration processing is to be performed (step S65)
YES), the information conversion unit 41 generates random data. The generation of the random data will be described below based on a specific example. For example, assume that an image code “1446” is set based on the extracted image data. That is, this image code is based on the orientation pattern of the IC card, and indicates a different numerical value for each IC card. On the other hand, the IC card 33
"0000", "0100", "0010", "01" as initial write information for writing to the IC chip 34 of FIG.
01 "and" 1001 "are input as initial values of the IC card via the input / output unit 43. Random data means data generated based on this image code and input information. .

More specifically, as shown in FIG. 9A, the random data is assumed to be data assumed to be written to the memory area 44 of addresses sequentially increasing from address 0. In this case, the image code is “14”
46 "," 1000 "is allocated to the address 1 as shown by oblique lines based on the first digit" 1 "of this code. , Ie, the value of “4”, “0110” is allocated to the area of address 4, and “0110” is similarly allocated to address 6.
0001 "is allocated. Each of the write information 45 is written to the addresses 0, 2, 3, 5, and 7 as the area of the memory area 44 other than the hatched area, that is, the area not specified based on the image code. In this way, random data from address 0 to address 7 is generated.

On the other hand, FIG. 9B shows the contents of random data when the image code based on the obtained image data is "1037" and the write information is the same as that in FIG. 9A. FIG. In (2) of FIG. 9, a memory area 44 indicated by oblique lines is an area designated by an image code, and therefore, addresses 2, 4, 5, 6, 8
The write information 45 is distributed to the address.

When comparing the random data of FIG. 9 (1) with the random data of FIG. 9 (2), the relationship between addresses indicated by arrows in the figure, that is, (1) in FIG. 9) are addresses 0, 2, 3, 5, and 7 in FIG.
The addresses (2), (4), (5), (6), and (8) correspond to the address (2). In other words, it can be said that the address where the write information is written is encrypted using the unique image code as an encryption key. Conversely, if this image code is not known, the write information can be taken out. I can't say that. In this way, the security of random data can be enhanced.

Next, in step S67, a number for each IC card is set as a code number, and in step S6
8, the image data extracted by the feature extraction unit 20, the random data generated by the information conversion unit 41, and the code number input by the input / output unit 43 are transmitted to the identification element via the read / write unit 40. 35 IC chips 34
Is written to. Subsequently, the same data is stored in the registration management device 2.
5 is written into the storage unit 27 via the writing unit 26, and the registration is completed (S69).

Next, a process of collating an IC card whose use has been started will be described. The same processing as the processing from step S61 to step S64 performed in the above-described registration processing is performed on the IC card to be verified. Thus, an image code extracted based on the orientation pattern of the IC card to be collated can be obtained. Upon entering a specific collation process (YES in step S70), in step S71, the IC chip 34 of the IC card 33
Is read by the read / write unit 40. The read information includes the random data stored in the registration process. Next, an image code is extracted from the random data read from the IC chip 34 (S72). Specifically, the image code can be obtained by reading the orientation pattern of the IC card 33 to be identified. Therefore, the data at the address of the corresponding address is read based on the image code, and the random Can be taken out.

Similarly, the data stored in the storage unit 27 of the registration management device 25 is read (S73), and the image code is similarly extracted from the random data included in the read data (S74). Next, in step S75, the image code read from the IC chip 34 of the IC card 33 is compared with the image code sequentially read from the storage unit 27 of the registration management device 25. If the image codes match as a result of the collation, the IC card 33 proceeds to step S77 as a genuine item. If the image codes do not match, the IC card identified as the identification target in step S78 is used.
The card 33 is determined to be fake and the process ends.

On the other hand, if the read image code is determined to be genuine based on the coincidence of the read image codes, the process proceeds to step S77 where I
The image code extracted from the random data stored in the IC chip 34 of the C card 33 is compared with the image code extracted from the random data stored in the storage unit 27 of the registration management device 25 (S77). If the collated image codes match (YES in step S79), it is determined that the IC card 33 to be identified is genuine and that the write information stored in the IC chip 34 of the IC card 33 has not been tampered with. It is determined and the process ends (S80).

On the other hand, if the extracted image codes do not match, it is determined that the identification information of the IC card 33 is genuine but that the write information stored in the IC chip 34 has been falsified. The process is terminated (S
81). Here, the relationship between the presence or absence of tampering and image data extracted from random data will be described. As shown in FIG. 9, in the stored random data,
A third party cannot determine which address data corresponds to the image code (the data indicated by oblique lines in the figure). Therefore, it is difficult to falsify only the contents of the write information other than the data corresponding to the image code. Therefore, if careless tampering is performed, data corresponding to the image code will also be tampered with. Therefore, when the image code is extracted from the falsified random data, the image code becomes different from the original image code, and the falsification is found.

On the other hand, with respect to the IC card 33 whose writing information has been properly changed through the reading device 17, the image code extracted from the random data is unchanged, so that the image code always matches the normal image code and is not falsified. Is determined. The presence or absence of the falsification as described above can be determined by comparing the image code obtained from the orientation pattern of the IC card 33 with the image code extracted from the random data stored in the IC chip 34 of the IC card 33. However, in consideration of the possibility of falsification of the image code stored in the IC chip 34 of the IC card 33, the image code extracted from the random data stored in the storage unit 27 of the registration management device 25 as in the above embodiment. The reliability is improved when the image code is set as the collation target.

In the above embodiment, the image code is directly transferred to the IC chip 34 of the IC card 33 and the registration management device 2.
The image code is also encrypted and stored in the IC chip 34 and the storage unit 27, respectively, in order to further enhance security. Furthermore, in the above-described embodiment, random data is generated using an address address corresponding to an image code. However, a result obtained by calculating an image code and storage information is written to an IC chip as random data, It may be read out.

Further, in the above embodiment, the present invention is applied to an IC card, but it goes without saying that the present invention can also be applied to identification and management of structures such as a camera body and a compact disk.

[Brief description of the drawings]

FIG. 1 is a view showing one surface of a resin structure which is a premise of the present invention.

FIG. 2 is a diagram showing an orientation pattern in an extraction area 15 of FIG.

FIG. 3 is a block diagram showing a schematic configuration of a reading device and a registration management device for performing reading and registration management on the resin structure of FIG. 1;

FIG. 4 is a flowchart showing the contents of a registration process and a collation process performed by the reading device and the registration management device shown in FIG. 3;

FIG. 5 is a diagram showing one surface of the IC card according to the embodiment of the present invention;

FIG. 6 is a diagram showing a modification of the IC card according to the embodiment of the present invention.

FIG. 7 is a block diagram illustrating a schematic configuration of a reading device and a registration management device for performing reading and registration management for the IC card of FIGS. 5 and 6;

FIG. 8 is a flowchart showing the contents of registration processing and collation processing by the reading device and the registration management device shown in FIG. 7;

FIG. 9 is a diagram for explaining the contents of random data in a random data generation step of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Resin structure 12 ... Resin 13 ... Fiber 15 ... Extraction area 17 ... Reading device 18 ... Imaging part 19 ... A / D conversion part 20 ... Features Extraction unit 25 ・ ・ ・ Registration management device 26 ・ ・ ・ Writing unit 27 ・ ・ ・ Storage unit 28 ・ ・ ・ Reading unit 29 ・ ・ ・ Comparing unit 33 ・ ・ ・ IC card 34 ・ ・ ・ IC chip 35 ・ ・ ・Identification element 40 ... Read / write section 41 ... Information conversion section In each drawing, the same reference numerals indicate the same or corresponding parts.

Claims (5)

[Claims] 1. An orientation pattern based on the flow orientation of a resin structure, from which individual identification information can be obtained by reading the orientation pattern, and based on individual identification information acquired from the orientation pattern. And an information storage unit for storing the information generated by the writing and reading in a freely readable manner. 2. The stored information includes information encrypted using the obtained individual identification information as an encryption key.
The structure according to claim 1. 3. The structure according to claim 1, wherein the structure is covered with a resin molded body, and the orientation pattern includes an orientation pattern of the resin molded body itself. 4. The structure according to claim 1, wherein the alignment pattern is added to a structural member constituting the structure. 5. The structure according to claim 2, wherein the structure includes an IC card, and the information storage unit includes an IC chip.