JP5442330B2 - Biometric information generation device, biometric authentication device, biometric information generation method, biometric authentication method - Google Patents

Description

  The present invention relates to a biometric authentication device for specifying an individual, and more particularly, to a biometric authentication device that acquires a plurality of pieces of authentication information from a single living body.

  User authentication technology using biometric information of a user is used in transactions in an automatic transaction apparatus (for example, ATM), entrance / exit of an office, and handling of confidential information. As the situation where user authentication is required increases, it is desired to improve the accuracy of biometric information and increase the types of biometric information. However, the living body is unique to the individual, and the number of pieces of biological information per person is limited. For example, there is one for the face, two for the palm print and palm vein, and ten for the fingerprint and finger vein. In the prior art, since one piece of biological information is acquired and used for one piece of living body, it is difficult to change the level of user authentication.

  In order to solve such a problem, for example, a technique has been proposed in which a face is used as a living body, and multiple pieces of biological information are created based on differences in facial expressions in a facial image (for example, Patent Document 1).

Japanese Patent Laid-Open No. 2006-24177 JP 2006-133930 A JP 2004-38870 A JP 2008-197712 A JP 2007-58643 A

  However, the facial expression is abstract and the authentication system is low, so there is a problem that it is not suitable for actual operation. In terms of facial expressions, applicable biometrics are limited to faces (that is, face authentication technology), and there is a problem that application to other biometric authentication technologies is difficult.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a technique for generating a plurality of pieces of biological information from a single living body.

SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.
One aspect of the present invention is a biometric information generation apparatus, a biometric reading surface for reading a living organism; an arrangement defining unit for arranging the living organism at a different position on the biometric reading surface; An optical unit for photographing the living body disposed at different positions of the living body, and photographing the exposed surface of the living body that is different for each of the different positions facing the optical unit part, thereby obtaining an image for each of the different positions. An acquisition unit that acquires data; a biometric information generation unit that generates biometric information based on the image data; and information generated based on the image data acquired for each of the different positions and information representing the position of the living body A biometric information generation device includes a biometric information template creation unit that creates biometric information templates in association with biometric information. According to this aspect, biological information can be generated for one living body based on image data acquired for each position of the living body. Therefore, a plurality of biological information templates can be generated from one biological body.

[Application Example 1]
Obtaining a living body reading surface for reading a living body, an arrangement defining unit for placing the living body in a different position or orientation on the living body reading surface, and acquiring image data of the living body placed on the living body reading surface A biological information generating unit that generates biological information based on the image data, information representing the position or orientation of the biological body, and biological information generated based on the image data acquired for each position or orientation And a biometric information template creation unit that creates a biometric information template in association with each other.

  According to the biometric information generation device of Application Example 1, it is possible to generate biometric information for one living body based on image data acquired for each position or orientation of the living body. Therefore, a plurality of biological information templates can be generated from one biological body.

[Application Example 2]
In the biometric information generation device according to Application Example 1, the arrangement defining unit includes a movable protective cover for protecting the biometric reading surface, and the biometric information generation device further determines the position of the protective cover. By detecting, a detection unit for detecting the position or orientation of the living body is provided. According to the biological information generating apparatus of Application Example 2, the position or orientation of the living body is detected by detecting the position of the movable protective cover for protecting the living body reading surface. Therefore, the position or orientation of the living body can be easily detected while protecting the living body reading surface.

[Application Example 3]
The biological information generation apparatus according to Application Example 1 or Application Example 2, wherein the arrangement defining unit includes a direction of the living body with respect to the living body reading surface and the living body reading surface, and an exposure of the living body facing the optical unit unit. The living body is arranged so that at least one of the areas is different. According to the biometric information generation device of Application Example 3, the arrangement defining unit configured to be capable of arranging the living body so that at least one of the direction of the living body with respect to the living body reading surface and the exposed area of the living body facing the optical unit unit is different. Is provided. Therefore, the living body can be arranged in various modes. Therefore, a plurality of pieces of biological information can be generated for one living body with a simple configuration.

[Application Example 4]
In the biometric information generation device according to the application example 3, the arrangement defining unit is configured to be able to arrange a living body from multiple directions with respect to the living body reading surface. According to the biometric information generation device of the application example 4, the arrangement defining unit is configured to be able to arrange a living body from multiple directions with respect to the biometric reading surface. Even if the living body is the same, if the shooting direction is different, the way the infrared light strikes the living body will be different, resulting in another image. Therefore, according to the biometric information generation device of Application Example 4, a plurality of pieces of biometric information can be easily generated from one living body by changing the shooting direction.

[Application Example 5]
The biological information generation device according to Application Example 4, wherein the arrangement defining unit is a first direction, parallel to the first direction, and opposite to the first direction with respect to the biological reading surface. The living body is arranged from the direction of the first direction, the third direction intersecting the first direction and the second direction, and the direction parallel to the third direction and opposite to the third direction. It is configured to be possible. According to the biometric information generation device of Application Example 5, the arrangement defining unit is configured to be able to arrange a living body from four directions with respect to the biometric reading surface. Therefore, a plurality of pieces of biological information can be generated from one living body with a simple configuration.

[Application Example 6]
The biological information generating apparatus according to Application Example 2, wherein the acquisition unit includes an optical unit for photographing the biological body arranged on the biological reading surface, and the protective cover is used for confirming the performance of the optical unit. A figure to be used is provided. According to the biological information generating apparatus of Application Example 6, the figure used for confirming the performance of the optical unit is provided on the protective cover. Therefore, the performance confirmation of the optical unit can be executed without requiring any new parts.

[Application Example 7]
In the biometric information generation device according to Application Example 1 to Application Example 6, the biometric information includes feature amount information representing the biometric feature amount extracted based on the image data. According to the biometric information generation device of Application Example 7, the biometric information includes biometric feature amount information. Thus, the data amount of the biometric information template can be reduced.

[Application Example 8]
In the biological information generation apparatus according to Application Example 1, the biological information generation unit further detects the position or orientation of the biological body based on the biological image represented by the image data. According to the biological information generating apparatus of Application Example 8, the direction of the living body is detected based on the image of the living body. Therefore, the direction of the living body can be detected without newly providing another component such as a sensor.

[Application Example 9]
A biometric authentication device, the biometric information generation device according to any one of application examples 1 to 8, biometric information acquired for each position or orientation of the living body, the position or orientation of the living body, and the biometric information template And an authentication unit for performing authentication of the living body. According to the biometric authentication device of the application example 9, the biometric information generation device capable of generating a plurality of pieces of biometric information from one biometric is provided. Therefore, one authentication apparatus can generate a plurality of biometric information templates from one living body and perform authentication processing.

[Application Example 10]
In the biometric authentication device according to the application example 9, the arrangement defining unit is associated with a number in advance according to the position or orientation, and the biometric information template creation unit includes the biometric location or orientation. The number and the biometric information are stored in association with each other, and the biometric authentication apparatus further includes a storage unit that stores a user's personal identification number and a number associated with the position or orientation of the biometric. An input unit for inputting, and the authentication unit further verifies the input number against the password to authenticate the password. According to the biometric authentication device of Application Example 10, biometric authentication and personal identification number authentication can be performed simultaneously by inputting a personal identification number and a personal identification number using a number associated with the position or orientation of the biological body. . Therefore, it is possible to improve the accuracy of authentication, strengthen security, and improve authentication processing efficiency.

  In the present invention, the various aspects described above can be applied by appropriately combining or omitting some of them.

It is explanatory drawing which illustrates the biometrics authentication apparatus 100 in 1st Example. It is explanatory drawing explaining the functional block of the control part 200 which controls the biometrics apparatus 100 in 1st Example. It is a flowchart explaining the biometric template production | generation process in 1st Example. It is explanatory drawing explaining the placement position of the biological body in 1st Example. It is explanatory drawing which illustrates the biometric template in 1st Example. It is a flowchart explaining the transaction processing in 1st Example. It is explanatory drawing which illustrates the biometrics authentication apparatus 500 in 2nd Example. It is explanatory drawing which illustrates about the biometric information template in 2nd Example. It is a flowchart explaining the transaction processing in 2nd Example. It is explanatory drawing which illustrates the biometrics authentication apparatus 700 in a modification (1). It is explanatory drawing explaining the input mode of the biological body in a modification (1). It is explanatory drawing which illustrates the optical sensor protective cover of the biometrics apparatus in a modification (2). It is explanatory drawing which illustrates the optical sensor protective cover of the biometrics apparatus in a modification (3).

A. First embodiment:
A1. System overview:
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram illustrating a biometric authentication device 100 according to the first embodiment. The biometric authentication device 100 includes an optical sensor protective cover movable area 101, an optical reading area 102, and an optical sensor protective cover 103. The optical sensor protective cover 103 is configured to be movable on the optical sensor protective cover movable area 101 along the arrow R1. The optical reading area 102 is an area where a living body is arranged. In the first embodiment, the living body is a finger, and the biological information represents the feature amount of the fingerprint of the finger.

  The optical sensor protective cover 103 includes biological contact portions 103a and 103b, and is configured to be slidable as indicated by an arrow R1. The user brings the fingertip into contact with the living body contact portion 103a and pushes it in the direction of the arrow R2 or pulls it back in the direction of the arrow R3 to slide the optical sensor protective cover 103 to expose the optical reading area 102. Hold your finger opposite to. The optical reading area 102 corresponds to the “biological reading surface” in the claims, and the optical sensor protective cover 103 corresponds to the “protective cover” in the claims. When the biometric authentication device 100 is not used, the optical reading area 102 is covered with the optical sensor protective cover 103, and adhesion and damage of dust and dirt are prevented.

  FIG. 2 is an explanatory diagram illustrating functional blocks of the control unit 200 that controls the biometric authentication device 100 according to the first embodiment. The control unit 200 includes a CPU, a ROM, and a RAM (not shown), and the biometric information is generated and the biometric authentication process is executed by the CPU controlling each functional block.

  The control unit 200 includes a biological image data collection unit 201, a biological collation data generation unit 202, a biological information generation / collation unit 203, a biological collection timing detection unit 204, a biological collection position detection sensor unit 205, a biological incidental information input unit 206, An auxiliary information generation unit 208 and an interface unit 209 are provided. Hereinafter, each functional block will be described in detail. In the first embodiment, the living body collection position detection sensor unit 205 is a “detection unit” in the claims, and the biometric matching data generation unit 202 is a “biological information generation unit” in the claims. The collation unit 203 corresponds to the “biological information template creation unit” in the claims.

  The biological image data collection unit 201 includes an irradiation module that irradiates the optical reading area 102 with infrared light, and a camera module that captures an image of a finger arranged in the optical reading area 102 and generates image data of the photographed finger. . The living body collection timing detection unit 204 uses the biological image data transmitted from the biological image data collection unit 201 in real time when the living body reaches a predetermined placement position of the optical reading area 102 to stop the living body such as a finger. The image data at the time when the state is detected is held. The biometric matching data generation unit 202 generates biometric information including a feature quantity of the living body (finger) using the image data held in the living body collection timing detection unit 204. In the first embodiment, the specified placement position represents the positions A, B, and C shown in FIG.

  When the optical sensor protective cover 103 reaches a predetermined placement position, the biological collection position detection sensor unit 205 acquires position information of the optical sensor protective cover 103 as information on a biological placement position. The biological supplementary information input unit 206 inputs personal information such as information representing the user's name and date of birth, which is input via an input unit (not shown). The biological incidental information generation unit 208 associates the living body placement position detected by the biological collection position detection sensor unit 205 with the biological incidental information input by the biological incidental information input unit 206. It should be noted that conventional password authentication may be combined with biometric information authentication. In this case, the biological supplementary information input unit 206 may be provided with a function for setting a personal identification number.

  The biometric information generation / collation unit 203 associates the biometric information generated by the biometric collation data generation unit 202 with the biometric information generated by the biometric information generation unit 208, and generates a biometric information template for each user. Is generated. The biometric information template is data used for collation with the biometric information of the user acquired during the biometric authentication process. Furthermore, the biometric information generation / collation unit 203 generates biometric information data using the biometric image data of the user acquired by the biometric image data collection unit 201 during biometric authentication processing, and collates it with the biometric information template.

  The interface unit 209 transmits / receives various information to / from a host device such as a personal computer or a system device. The biometric authentication device 100 has the configuration described above.

A2. Biometric template generation processing:
The biometric template generation process will be described with reference to FIGS. FIG. 3 is a flowchart for explaining the biometric template generation process in the first embodiment. FIG. 4 is an explanatory diagram for explaining the placement position of the living body in the first embodiment. FIG. 5 is an explanatory diagram illustrating a biological template in the first embodiment. The biometric template generation process illustrated in FIG. 3 is executed by the control unit 200 controlling each functional block.

  The control unit 200 detects the placement position where the user's finger is placed among any of the placement positions A, B, and C (see FIG. 1) (step S10). Specifically, the control unit 200 detects the position of the optical sensor protective cover 103 as a living body placement position. A predetermined placement position is set in the optical sensor protective cover 103, and the prescribed placement positions are the positions A, B, and C shown in FIG. The living body collection position detection sensor unit 205 detects the position of the living body depending on which position the optical sensor protective cover 103 is stationary. For example, when the optical sensor protective cover 103 is stationary at the position B, the placement position of the living body is “placement position B”.

  Next, the control unit 200 detects that the living body is stationary, captures the living body (finger) exposed in the optical reading area 102, and generates image data (step S12). The control unit 200 analyzes the image data to generate a biometric feature amount (for example, information representing the fingerprint feature) as biometric information (step S14), and associates the biometric template with the information representing the living body placement position. Generate and save (step S16).

  Although not described in FIG. 3, information such as the user's name and date of birth may be input, and the information may be managed in association with the living body and the placement position in step S16. .

With reference to FIG. 4, the difference in the image of the living body when the living body is placed at each placement position will be described. 4A shows an image of a living body photographed when the living body is placed at the placement position A, and FIG. 4B is photographed when the living body is placed at the placement position B. FIG. 4C shows a living body image taken when the living body is placed at the placement position C. FIG.
As shown in FIG. 4A, the user brings the finger S into contact with the side surface of the biological contact portion 103a of the optical sensor protective cover 103, slides the optical sensor protective cover 103 in the direction of arrow R1, and moves it. When the end of the contact portion 103a moves to the placement position A, the movement of the finger S is stopped. In this state, as shown in FIG. 4 (a), only the region 302 is exposed to the outside in the range 300 to be imaged by the optical unit, and the region 304 (shown by hatching) is protected by the optical sensor. Covered with a cover 103. Therefore, the part of the living body (finger S) included in the region 302 is included in the image data. FIG. 4A shows that the upper part of the first joint of the finger is photographed.

  Similarly, as shown in FIG. 4B, when the living body (finger S) is placed at the placement position B, the region 302 is wider than that in FIG. The bottom is photographed. Also, as shown in FIG. 4C, when the living body (finger S) is placed at the placement position C, the region 302 is wider than that in FIG. Is filmed. Image data generated when a finger is placed at the placement position A, image data generated when a finger is placed at the placement position B, and image data generated when a finger is placed at the placement position C are shown in FIG. As shown in FIG. 4 (a) to FIG. 4 (c), they are different from each other. As described above, by changing the placement position of the living body (in the first embodiment, the finger S), it is possible to acquire a plurality of different image data for each placement position from one living body.

  The control unit 200 analyzes the image data for each placement position acquired in this way, calculates the feature amount of the living body and the biological information for each placement position, and combines it with information representing the placement position in units of users. A biometric information template is generated. In the first embodiment, the biological information calculated when the finger is placed at the placement position A is information A, the biological information calculated when the finger is placed at the placement position B is information B, and the finger is placed at the placement position C. The biological information calculated when placed is information C. As shown in FIG. 5, the biological information template 400 includes two items, “placement position” and “biological information”. The “placement position” stores information indicating the placement position, and the “biological information” stores biological information. In the first embodiment, the biological information of the placement position A is information A, the biological information of the placement position B is information B, and the biological information of the placement position C is information C. Thus, by changing the position of the living body, different image data can be acquired, and a plurality of pieces of biological information can be generated and used from the same living body.

A3. Withdrawal transaction processing:
In the first embodiment, a withdrawal transaction process when the biometric authentication device 100 is mounted on an automatic teller machine (ATM) will be described. Here, the ATM performs user authentication processing using one or more pieces of biometric information collected for one living body according to the withdrawal amount desired by the user using the ATM, and whether or not the transaction can be executed. Judging. The withdrawal transaction process is executed by an ATM control unit (hereinafter simply referred to as “control unit” in the first embodiment) that controls the biometric authentication device 100 and each functional block of the ATM.

  The control unit inputs the withdrawal amount desired by the user in accordance with the user's operation (step S20). The control unit determines whether the withdrawal amount is 1 million yen or less (step S22), and if it is 1 million yen or less (step S22: YES), inputs biometric information to the user. The biometric detection process is performed promptly (step S24), and the information stored in the biometric information template 400 and the biometric information input by the user are authenticated (step S32). When the withdrawal amount is 1,000,000 yen or less, the control unit guides the living body (finger) to be placed at the placement position A and acquires the biological information. Next, the control unit collates the acquired biological information of the user with information A that is the biological information of the placement position A stored in the biological information template 400 of the user.

  If the withdrawal is not less than 1 million yen (step S22: NO), the control unit determines whether the withdrawal is less than 10 million yen (step S26). If the control unit exceeds 1 million yen and is 10 million yen or less (step S26: YES), the control unit prompts the user to input biometric information and performs biometric detection processing (step S28). Authentication between the information stored in the information and the biometric information input by the user is performed (step S32). When the withdrawal amount exceeds 1 million yen and is 10 million yen or less, the control unit is configured to display biometric information when the living body is placed at the placement position A and when the living body is placed at the placement position B. Authentication is performed using two pieces of biological information, namely, biological information. First, the control unit guides the living body (finger) to be placed at the placement position A, obtains biological information at the placement position A, and then guides the living body to be placed at the placement position B. Obtain biometric information. Next, the control unit obtains the biometric information of the user and the information A which is the biometric information of the placement position A and the biometric information of the placement position B stored in the biometric information template 400 of the user. And match.

  If the withdrawal is not 10 million yen or less (step S26: NO), the control unit determines that the withdrawal is 10 million yen or more, and prompts the user to input biological information to perform the biological detection process ( Step S30), authentication between the information stored in the biometric information template 400 and the biometric information input by the user is performed (step S32). When the withdrawal amount is 1,000,000 yen or more, the control unit includes biological information when the living body is placed at the placement position A, biological information when the living body is placed at the placement position B, and the placement position. Authentication is performed using three pieces of biological information, namely, biological information when a living body is placed on C. The control unit acquires the biological information at the placement position A, the placement position B, and the placement position C, and acquires the three pieces of biological information of the user and the placement position A stored in the biological information template 400 of the user. Information A, B, and C, which are biological information of B and C, are collated.

  The control unit determines whether the authentication has succeeded, that is, whether the acquired biometric information matches the biometric information stored in the biometric information template 400 of the user (step S34). (Step S34: YES), it is determined that the authentication is successful, and the transaction is executed (Step S36). When there are a plurality of pieces of biometric information to be collated, it is determined that authentication is successful only when all pieces of biometric information match. When the acquired biometric information does not match the biometric information stored in the user's biometric information template 400 (step S34: NO), the control unit suspends the transaction because the authentication has failed (step S34). S38).

  According to the biometric authentication device 100 of the first embodiment described above, biometric information can be generated for one living body based on image data acquired for each living body placement position. Therefore, a plurality of biological information templates 400 can be generated from the living body of Application Example 1.

  In addition, according to the biometric authentication device 100 of the first embodiment, the living body can be arranged so that at least one of the direction of the living body with respect to the optical unit portion and the exposed area of the living body facing the optical unit portion is different. An optical sensor protective cover 103 is provided. In the first embodiment, the exposed area of the living body facing the optical unit portion is different by sliding the optical sensor protective cover 103. Therefore, the living body can be arranged in various modes. Therefore, a plurality of pieces of biological information can be generated for one living body with a simple configuration.

  In addition, according to the biometric authentication device 100 of the first embodiment, the position of the living body is detected by detecting the position of the movable optical sensor protective cover 103 for protecting the optical unit portion. Therefore, it is possible to easily detect the placement position of the living body while protecting the optical unit portion.

  Further, according to the biometric authentication device 100 of the first embodiment, the biometric information includes biometric feature amount information. Therefore, the data amount of the biometric information template 400 can be reduced in weight.

B. Second embodiment:
In the second embodiment, password authentication is performed together with biometric authentication using a biometric authentication device configured to be able to input numbers according to the amount of movement of the optical sensor protective cover.

B1. System overview:
FIG. 7 is an explanatory diagram illustrating a biometric authentication device 500 according to the second embodiment. The biometric authentication device 500 includes an optical sensor protective cover movable area 501, an optical reading area 502, and an optical sensor protective cover 503. The optical sensor protective cover 503 is configured to be movable on the optical sensor protective cover movable area 501 along the arrow R1. The optical reading area 502 is an area where a living body is arranged. In the second embodiment, the living body is a finger, and the biological information represents the feature amount of the fingerprint of the finger.

  The optical sensor protective cover 503 includes a biological contact portion 503a, and the user moves the optical sensor protective cover 503 to expose the optical reading area 502 by bringing the fingertip into contact with the biological contact portion 503a and sliding it. A finger is opposed to the optical reading area 502.

  As shown in FIG. 7, in the biometric authentication device 500, numerals 0 to 9 are written for each position where the optical sensor protective cover 503 is slid, and the biometric sampling position detection provided inside the biometric authentication device 500 is performed. The position of the optical sensor protective cover 503 is detected using a sensor (not shown), and a number associated with the position is input as a password. For example, when the same finger is used as a living body, the biological image data acquired at the placement position “2” and the biological image data acquired at the placement position “8” have different living body orientations. , It will be a different image. Therefore, different biological information is collected from the same living body (finger) according to the placement position, and numbers “2” and “8” associated with the placement position are input as the personal identification number.

  Note that the living body collection position detection sensor provided in the biometric authentication device 500 can have various known configurations that can detect the position of the optical sensor protective cover 503 on the optical reading area 502.

  FIG. 8 is an explanatory diagram illustrating the biometric information template in the second embodiment. In the second embodiment, similar to the first embodiment, different biological information is generated from the same living body for each living body placement position. In “Biometric information template 600” of FIG. 8, “Position number” stores a number associated with the placement position, and “Biometric information” stores biometric information. In addition, although illustration is abbreviate | omitted, the biometrics authentication apparatus 500 hold | maintains separately the positional information according to a positional number, and a user's PIN code.

B2. Transaction processing:
In the second embodiment, as in the first embodiment, a withdrawal transaction process when the biometric authentication device 500 is mounted on an automatic cash transaction apparatus (ATM) will be described. Here, according to the withdrawal amount desired by the user using the ATM, the user authentication process is performed using the password entered together with the input of the biometric information. In the second embodiment, the personal identification number is an enumeration of four digits and is set in advance by the user. The transaction process is executed by an ATM control unit (not shown) (hereinafter simply referred to as “control unit” in the second embodiment) that controls the biometric authentication device 500 and each functional block of the ATM. In FIG. 9, i indicates the number of digits of the personal identification number and represents an integer of 1 or more.

  FIG. 9 is a flowchart for explaining transaction processing in the second embodiment. When receiving an input of transaction details from the user (step S50), the control unit detects the position where the living body is placed and identifies the position number (step S52). Next, the control unit determines whether the biometric information acquired at the position where the living body is placed matches the biometric information stored in the biometric information template 600, and the i th password of the user. Whether the number and the position number match (step S54). If the biometric information and the password number match (step S54: YES), it is determined whether i = 4 (step S58). If at least one of the i-th digit of the biometric information or the password and the position number does not match (step S54: NO), the control unit stops the transaction process (step S56). In the second embodiment, since the personal identification number is four digits, it is determined in step S58 whether i = 4. However, it may be changed as appropriate according to the number of digits of the personal identification number.

  If i = 4 is not satisfied (step S58: NO), the control unit determines that the authentication process has not ended, increments i by 1 (step S60), returns to step S52, and returns the biometric information and password. Continue to accept input. When i = 4 (step S58: YES), the control unit determines that the biometric authentication and the authentication of the personal identification number have been completed and executes the transaction (step S62). As described above, the user is authenticated by the two authentication means of the biometric information and the password.

  According to the biometric authentication device 500 of the second embodiment described above, biometric authentication and personal identification number authentication are performed by inputting a personal identification number together with the input of biological information using the number associated with the position of the biological body. Can be executed simultaneously. Therefore, it is possible to improve the accuracy of authentication, strengthen security, and improve authentication processing efficiency.

  In the biometric authentication device 500 according to the second embodiment, numbers are sequentially associated with the placement position from 0 to 9, but the numbers may be associated with each other at random.

C. Variations:
(1) FIG. 10 is an explanatory diagram illustrating a biometric authentication device 700 in the modification (1). FIG. 11 is an explanatory diagram for explaining an input mode of a living body in Modification Example (1). The biometric authentication device 700 includes an optical sensor protective cover movable area 701, an optical reading area 702, and an optical sensor protective cover 703, and a control system similar to the control unit 200 of the biometric authentication device 100 in the first embodiment. Provided inside. The optical sensor protective cover 703 is configured to be movable in four directions, up, down, left, and right in the optical sensor protective cover movable area 701, and a living body (finger) placed on the biological contact portion 703a is optically read. A penetrating portion 703b formed to face the area 702 is provided. In the modification example (1), the four directions of up, down, left, and right are “first direction”, “second direction”, “third direction”, and “fourth direction” in the claims. The direction.

  In the biometric authentication device 700, when inputting biometric information from below, as shown in FIG. 11 (a), the user places a biometric (finger) on the biometric contact portion 703a, and from below (the front side of the drawing), The optical sensor protective cover 503 is slid upward (in the back of the drawing) and slid on the optical reading area 702. Further, as shown in FIG. 11 (b), the user places a living body on the living body contact portion 703a from the right side of the drawing, slides it from the right side to the left side, and stops at a specified position or a desired position of the user. . If a plurality of slide positions are set for each direction, more biological information can be acquired. The control unit of the biometric authentication device 700 detects the stationary state of the optical sensor protective cover 703, detects the position of the optical sensor protective cover 703, and collects biometric information. In addition, when biological information can be input from such various directions, the direction of the living body may be specified by detecting the sliding direction of the optical sensor protective cover 703 by a sensor, or a captured biological image The direction of the living body may be detected by analyzing the data. By doing so, variations in the input mode of biological information can be increased, and a large number of biological information can be acquired from one living body.

  According to the modification (1), the optical reading area 702 is configured such that a living body can be arranged from multiple directions with respect to the optical unit portion. Even if the living body is the same, if the shooting direction is different, the way the infrared light strikes the living body will be different, resulting in another image. Therefore, a plurality of pieces of biological information can be easily generated from one living body by changing the shooting direction. In addition, since the biometric authentication device 700 is configured to be able to arrange a biometric from four directions, it can generate a plurality of pieces of biometric information from a single biometric with a simple configuration.

  (2) FIG. 12 is an explanatory diagram illustrating the optical sensor protective cover of the biometric authentication device in Modification (2). An optical sensor protective cover 750 in FIG. 12 is a cover having the same shape as the optical sensor protective cover 103, and a pattern 751 for checking the resolution of the optical sensor and a pattern for checking the brightness of the optical sensor are provided on the back surface. A graphic such as 752 is printed. By doing so, whether or not the optical sensor that reads the living body is normal by reading the pattern printed on the optical sensor protective cover 750 using the sensor that reads the living body when the biometric authentication process or the like is not performed. Self-diagnosis can be performed, and there is no need to newly prepare parts for optical sensor diagnosis.

(3) FIG. 13 is an explanatory view illustrating the optical sensor protective cover of the biometric authentication device in Modification (3). The optical sensor protective cover 760 of FIG. 13 has a reading opening 761 in a part of the cover, and, like the optical sensor protective cover 103 of the first embodiment, the optical sensor protective cover 760 slides to read the opening. The living body faces the optical unit through 761, and the image data of the living body is acquired. In this case, there is no change in the stroke amount for reading the living body, that is, the range of the living body represented in the acquired image of the living body, but there is a difference in the position where it is arranged in the entire collected image. Therefore, even with such a configuration, it can be handled as two or more different pieces of information according to the difference in the irradiation position of infrared light, etc., despite the completely same biological information.

(4) In each of the above-described embodiments, the biological image data collection unit 201 has an optical unit unit fixed. For example, the optical unit unit is located within the optical reading area with respect to a living body like a known scanner. It is good also as a structure which moves relatively.

(5) In each of the above-described embodiments, image data is acquired in a state where the living body is stationary. For example, the image data may be acquired by moving the living body relative to the optical reading area. . In this case, different image data can be acquired from one living body if the start point or the end point for moving the finger is configured to be different.

  As mentioned above, although the various Example of this invention was described, this invention is not limited to these Examples, A various structure can be taken in the range which does not deviate from the meaning.

DESCRIPTION OF SYMBOLS 100 ... Biometric authentication apparatus 101 ... Optical sensor protection cover movable area 102 ... Optical reading area 103 ... Optical sensor protection cover 103a, 103b ... Biocontact part 200 ... Control part 201 ... Biometric image data collection part 202 ... Biometric collation data generation part 203 ... Biological information generation / collation unit 204 ... Biological collection timing detection unit 205 ... Biological collection position detection sensor unit 206 ... Biological incidental information input unit 208 ... Biological incidental information generation unit 209 ... Interface unit 300 ... Range 302 ... Area 304 ... Area 400 ... Biometric information template 500 ... Biometric authentication device 501 ... Optical sensor protective cover movable area 502 ... Optical reading area 503 ... Optical sensor protective cover 503a ... Biometric contact portion 600 ... Biometric information template 700 ... Biometric authentication device 701 ... Optical sensor protective cover movable Area 702 ... Optical reading area 703 ... Optical sensor protective cover 703a ... Biological contact part 703b ... Penetration part 750 ... Optical sensor protective cover 751 ... Pattern 752 ... Pattern 760 ... Optical sensor protective cover 761 ... Reading opening

Claims (12)

A biological information generating device,
A living body reading surface for reading the living body;
The biological reading surface, the arrangement defining portion for arranging the biological different position,
Including an optical unit for photographing the living body arranged at a different position on the living body reading surface , and photographing the exposed surface of the living body that is different for each of the different positions facing the optical unit. An acquisition unit that acquires image data for each position ;
A biometric information generating unit that generates biometric information based on the image data;
And information indicating the position of the living body, and said different said obtained for each position in association with the generated biometric information based on the image data biometric information template creation unit that creates a biometric information template,
A biometric information generation device comprising: The biological information generating device according to claim 1,
The arrangement defining portion includes a protective cover for protecting the living body reading surface,
The biometric information generating device further, by detecting the position of the protective cover, provided with a detector for detecting the position of said living body,
Biological information generation device. The biological information generating device according to claim 1 or 2,
The arrangement defining portion, direction towards the living body against the living body reading surface is to place the biological differently,
Biological information generation device. The biological information generating device according to claim 3,
The arrangement defining unit is configured to be able to arrange a living body from multiple directions with respect to the living body reading surface.
Biological information generation device. The biological information generating device according to claim 4,
The arrangement defining unit has a first direction with respect to the living body reading surface, a second direction parallel to the first direction and opposite to the first direction , the first direction a third direction crossing the direction and the second direction, and parallel to said third direction and said third fourth direction which is the direction opposite to the direction, the biometric from Configured to be deployable,
Biological information generation device. The biological information generating apparatus according to claim 2 ,
The front Symbol protective cover, shapes that are utilized in the performance check of the optical unit is provided,
Biological information generation device. The biological information generating device according to any one of claims 1 to 6,
The biometric information includes feature quantity information representing the biometric feature quantity extracted based on the image data .
Biological information generation device. The biological information generating device according to claim 1,
The biological information generation unit is further based on the image of the living body represented by the image data, detects the position of the living body,
Biological information generation device. A biometric authentication device,
A biometric information generating apparatus according to any one of claims 1 to 8,
Position of the living body, position your capital biometric information acquired in the living body, and an authentication unit based on said biometric information template, performs authentication of the living body,
A biometric authentication device. The biometric authentication device according to claim 9,
Wherein the arrangement defining portion, in response to said position location, and advance number is associated,
The biometric information template creation unit, a position of the living body, and the number, store in association with the biological information,
The biometric authentication device further includes:
A storage unit for storing the user's personal identification number;
And an input unit for inputting a number associated with the position of the living body,
The authentication unit further verifies the password by comparing the input number with the password.
Biometric authentication device. A biometric reading surface for reading biometric, the biometric reading surface, a biometric information generating method performed by the biometric information generating apparatus and a placement defining portion for arranging the biological different position,
Image data is acquired for each of the different positions by photographing the exposed surface of the living body that is different for each of the different positions arranged on the biological reading surface,
Based on the image data, generate biological information,
And information indicating the position of said living body, said different creates a biometric information template associates the generated biometric information based on the image data acquired for each position, biometric information generation method. A biometric reading surface for reading biometric, the biometric reading surface, a biometric authentication method performed by the biometric authentication device and a placement defining portion for arranging the biological different position,
Image data is acquired for each of the different positions by photographing the exposed surface of the living body that is different for each of the different positions arranged on the biological reading surface,
Based on the image data, generate biological information,
And information indicating the position of the living body, in correspondence with the generated biometric information based on the image data obtained for each of the different positions to create the biometric information template,
Position of the living body, position your capital biometric information acquired in the living body, and, on the basis of the biometric information template, performs authentication of the living body,
Biometric authentication method.

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