JP5221101B2 - Biometric authentication system - Google Patents

Description

  The present invention relates to a biometric authentication system.

  Conventionally, a biometric authentication apparatus using human biometric information (fingerprint, blood vessel pattern, etc.) as an authentication means is known. This compares the biometric information read by the biometric information reading means with the biometric information stored in the memory in advance, and if it matches, it is determined that the person is the subject of authentication. Is allowed.

  Such a biometric authentication device has a function of registering and deleting biometric information. In the method of Patent Document 1, when registering biometric information, a user key is inserted into a key holder, rotated to a predetermined registration position, and then a finger is applied to the fingerprint sensor to read the fingerprint. Fingerprint data can be registered. Also, when deleting biometric information, insert the user key into the key holder, rotate it to a predetermined deletion position, and then apply the finger to the fingerprint sensor to read the fingerprint. It is configured to delete data.

JP 2003-013646 A

  However, the biometric authentication device disclosed in this conventional publication requires a user key, a key holder, a lamp indicating the registration position and the deletion position of the key holder, and the like as a configuration for deleting biometric information, which increases manufacturing costs. At the same time, there is a problem that the apparatus itself becomes large.

  Therefore, an object of the present invention is to provide a biometric authentication system that can reduce the size of components that delete biometric information and can be miniaturized.

As means for solving the above problems, the present invention stores biological information reading means for reading biological information, a storage unit for storing biological information, biological information acquired by the biological information reading means, and the storage unit. In the biometric authentication system, the biometric authentication system includes a control unit that executes biometric authentication processing that determines that the person is an authentication target if the biometric information matches, and the storage unit stores data indicating a predetermined order. A user storage area provided with a predetermined number of biometric information registration areas to which a label is attached , and a master storage area for storing biometric information as a master to which authority to perform registration of biometric information in the user storage area is given When the biometric information is registered in the user storage area and the maximum number of biometric information is already stored in the user storage area, The registration process of the biometric information for the user storage area, rewrites the data label to one smaller value respectively, of the rewritten data labels of the user storage area, data labels of the smallest value is assigned In addition, the biometric information is deleted, and a registration update unit for adding a new data label to the new biometric information and registering it in the user storage area is provided.

  With this configuration, the biometric information is deleted by registering the biometric information, so a button or the like for deleting the biometric information is unnecessary. Therefore, it is possible to reduce the number of components from which biometric information is deleted, and the biometric authentication system can be downsized. In addition, since the master storage area for storing the biometric information as the master and the user storage area for registering the biometric information of the user are provided separately, the biometric information of the master is deleted when the biometric information of the user is deleted. The biometric information can be deleted by additionally registering the biometric information.

  In the user storage area, a first user storage area in which authority to execute a predetermined function is given to the stored biometric information, and a authority different from the first user storage area is given to stored biometric information. A two-user storage area may be provided, and the control unit may be provided with a selective registration unit that enables biometric information to be registered for each user storage area.

  With this configuration, since it is configured to limit the use of the device for each area where the biometric information is stored, it is not necessary to record use restriction information for each biometric information, and management of the biometric information is easy. Become. In addition, even if the area for storing the biometric information is divided into a plurality of parts as described above, it is possible to delete the biometric information by additionally registering the biometric information. There is no need to provide additional components for deleting information, the components can be reduced, and the biometric authentication system can be downsized.

  According to the present invention, since deletion of biometric information can be performed by additionally registering biometric information, a button or the like for deleting biometric information is not necessary, components can be reduced, and the biometric authentication system can be reduced in size. Can be realized.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows a block diagram when the biometric authentication system according to the present embodiment is adopted in a vehicle. This biometric authentication system includes a biometric authentication device 1, an electronic key 2, and a smart entry control unit 3 (smart entry C / U).

  2 and 3, the biometric authentication device 1 includes a case 4, an infrared irradiation unit 5, a camera unit 6, a switch unit 7, a first storage unit 8, a first control unit 9, a first communication unit 10, And the 1st power supply part 11 is provided.

  As shown in FIG. 3, the case 4 has a substantially box shape, and guide walls 13 are formed on both sides on the upper surface. A region between the guide wall portions 13 constitutes a finger placement portion 14, and flat portions 15 are formed at both end portions of the finger placement portion 14. Further, in a region surrounded by the flat portion 15 and the guide wall portion 13, a cylindrical portion 16 having a rectangular cross section extending toward the internal space of the case 4 is formed. The cylindrical portion 16 is formed with a stepped portion 17 at a position where a predetermined dimension is entered toward the tip (back) side, and an infrared filter 18 for blocking visible light is provided there. The front end opening of the cylindrical portion 16 is closed by the substrate 20. A space surrounded by the cylindrical portion 16, the infrared filter 18, and the substrate 20 is a housing portion 21.

  A plurality of infrared irradiation sections 5 are arranged in parallel along the longitudinal direction of the guide wall section 13 on one side. An LED (Light Emitting Diode) or the like can be used for the infrared irradiation unit 5 and emits near infrared rays when energized.

The camera unit 6 is mounted at the center of the substrate 20 and is located in the housing unit 21 of the case 4. As a result, the camera unit 6 captures a vein pattern in the vicinity of the second joint of the finger A arranged in the finger arrangement unit 14 as shown in FIG. The camera unit 6 includes a CCD (Charge Coupled Device) camera, a CMOS (Complementary
Metal-Oxide Semiconductor) cameras can be used. In the present embodiment, the case 4, the infrared irradiation unit 5, and the camera unit 6 constitute a biological information reading unit that reads biological information.

  A plurality of the switch parts 7 are arranged in parallel along the longitudinal direction of the guide wall part 13 on the other side, and the master registration switch 23 that is operated when registering biometric authentication as a master from above in FIG. And a user registration switch 24 that is operated when registering the user's biometric information, and a temporary release mode that enables the use of the vehicle without performing biometric authentication when the vehicle is temporarily rented to another person. And a temporary release switch 25. Each switch is not connected to the first control unit 9 but is electrically connected to the second control unit 33 of the smart entry control unit 3 via the first communication unit 10. When each switch is pressed, an electrical signal is transmitted to the second control unit 33, and the operation of each switch 23, 24, 25 is detected by the second control unit 33 of the smart entry control unit 3.

  In the first storage unit 8, biometric information (for example, digitized finger vein patterns) for authentication by the biometric authentication device 1 and ID (identification) information associated with the biometric information (for example, for example) , ID number). As shown in FIG. 5A, the first storage unit 8 includes a first master storage area 27 for storing biometric information and ID information as a master, and a registration area for biometric information for a predetermined number of people. And second user storage areas 28 and 29. Further, a control program for executing an authentication process described later is stored.

  For the person to be authenticated who has biometric information stored in the first master storage area 27, the authority to use the vehicle, which will be described later, and the use of the vehicle without performing biometric authentication when temporarily lending the vehicle to another person. The authority to set the temporary release mode that enables the registration and the authority to permit the registration of other biological information are given. The first master storage area 27 is provided with one data storage unit 27a for storing biometric information and ID information.

  The first user storage area 28 is provided, for example, for storing family biometric information and ID information. The biometric information registered in the first user storage area 28 is given authority to use the vehicle and authority to set the temporary release mode. As will be described later, when biometric information is registered in the first user storage area 28, it is necessary to perform master authentication using biometric information as a master stored in the first master storage area 27 in advance. is there.

  The first user storage area 28 is partitioned into a plurality of data storage units, and in the present embodiment, includes five data storage units 28a to 28e that store biological information and ID information. And the storage method is a data storage unit in which the oldest personal data is stored after concatenating the acquired biometric information and data of ID information newly created in association with the biometric information into one personal data 28a to 28e are overwritten and stored, and the labels of the data storage units 28a to 28e are rewritten. For example, immediately after purchase, personal data is first stored in the first data storage unit 28a, and a data label (data 1) indicating that the first data is present is stored in the first data storage unit 28a. Next, the data label (data 2) which memorize | stores in the 2nd data storage part 28b and shows that it is the 2nd data in the 2nd data storage part 28b is memorize | stored. After that, until the fifth data is stored, the personal data is stored in the third, fourth, and fifth data storage units 28c to 28e in order, and the data labels indicate that the third, fourth, and fifth data respectively exist. (Data 3, 4, 5) is stored in each of the data storage units 28c to 28e. When the sixth biological information is registered, the personal data is overwritten and stored in the data storage unit 28a in which the data label (data 1) indicating the first data is stored. The data labels stored in the storage units 28a to 28e are rewritten to one smaller value (Data 1 → Data 0, Data 2 → Data 1, Data 3 → Data 2, Data 4 → Data 3, Data 5 → Data 4). ). Finally, by rewriting the label of the data storage unit 28a in which the label of data 0 is stored with data 5, the personal data registered most recently can be deleted and new personal data can be registered. . Further, when registering the seventh and subsequent biometric information, the personal data is overwritten in the data storage units 28a to 28e in which the data label (data 1) indicating the first data is stored as described above. By deleting the data labels and sequentially rewriting the data labels, the personal data can be deleted and registered at the same time.

  The second user storage area 29 is provided, for example, for storing biometric information and ID information of a person (such as a friend) who lends the vehicle. Only the authority to use the vehicle is given to the biometric information registered in the second user storage area 29. That is, the person corresponding to the biometric information stored in the second user storage area 29 is permitted to use the vehicle, but is not authorized to set the temporary release mode. As will be described later, when biometric information is registered in the second user storage area 29, it is necessary to perform master authentication using biometric information as a master stored in the master storage area in advance.

  The second user storage area 29 is partitioned into a plurality of data storage units, and in the present embodiment, includes three data storage units 29a to 29c that store biometric information and ID information. Then, the storage method is similar to the case of the first user storage area 28, after the acquired biometric information and the newly created ID information data associated with the biometric information are combined into one personal data. The oldest personal data is stored in the data storage units 29a to 29c, and the labels of the data storage units 29a to 29c are rewritten. For example, immediately after purchase, personal data is first stored in the first data storage unit 29a, and a data label (data 1) indicating that the first data is present is stored in the first data storage unit 29a. Thereafter, until the third data is stored, the personal data is sequentially stored in the second and third data storage sections 29b and 29c, and data labels (data 2, 3 indicating that there are the second and third data, respectively). ) Is stored in each of the data storage units 29b and 29c. When the fourth biological information is registered, the personal data is overwritten and stored in the data storage unit 29a in which the data label (data 1) indicating the first data is stored. The data labels stored in the storage units 29a to 29c are rewritten to one smaller value (data 1 → data 0, data 2 → data 1, data 3 → data 2). Finally, by rewriting the label of the data storage unit 29a in which the label of data 0 is stored with data 3, the personal data registered at the front can be deleted and new personal data can be registered. . Further, when registering the fourth and subsequent personal data, the personal data is overwritten in the data storage units 29a to 29c storing the data label (data 1) indicating the first data, as described above. By deleting the data labels and sequentially rewriting the data labels, the personal data can be deleted and registered at the same time.

  The first control unit 9 functions as a biometric authentication unit that executes biometric authentication processing based on the vein pattern photographed by the camera unit 6 as described later. The vein pattern is digitized by image processing, and compared with the biometric information registered in the first storage unit 8 (also digitized), it is determined whether or not the vein pattern is a registered person. Moreover, the 1st control part 9 has a function which registers and deletes the biometric information and ID information in the 1st memory | storage part 8, so that it may mention later. Furthermore, if the biometric information for the maximum number of people is already stored in the user storage areas 28 and 29 at the time of biometric information registration, the first control unit 9 deletes the biometric information registered first and then creates a new one. It functions as a registration update means for registering biometric information.

  The digitization of the vein pattern is performed as follows. That is, the near infrared rays irradiated to the finger are easily absorbed by reduced hemoglobin that has flown through the veins in the blood after carrying oxygen. For this reason, the image is dark for the veins and bright for the other portions. Therefore, the brightness at each part is converted into numerical data of “0” or “1” by the binary system.

  The first communication unit 10 transmits the ID information and the authentication result specified as a result of performing the biometric authentication process in the first control unit 9, and further, the biometric information and the ID information registered in the first storage unit 8 to the smart entry control unit 3 to send. Further, a control signal such as a registration completion signal is transmitted to the smart entry control unit 3. Further, operation signals of the master registration switch 23, the user registration switch 24 and the temporary release switch 25 are transmitted to the smart entry control unit 3. A connector or the like for connecting a cord from the smart entry control unit 3 can be used for the first communication unit 10.

  The electronic key 2 is used to lock and unlock a vehicle door without using a physical mechanical key. When the electronic key 2 receives a request signal transmitted from the vehicle, the electronic key 2 automatically transmits an identification signal including ID information set in the electronic key 2.

  As shown in FIG. 2, the smart entry control unit 3 includes an antenna unit 31, a second storage unit 32, a second control unit 33, a second communication unit 34, an input / output unit 35, and a second power supply unit 36. , Door lock control unit 41 (door lock C / U), electric steering lock 42 (electric STL), engine control unit 43 (engine C / U), start switch 44 (start SW), keyless switch 45 (keyless SW), etc. It is connected to the.

  The antenna unit 31 includes a transmission antenna (not shown) that transmits a request signal toward the electronic key 2 and a reception antenna (not shown) that receives an identification signal from the electronic key 2 and performs second control. Each part 33 is electrically connected.

  In the second storage unit 32, ID information (including ID information corresponding to the electronic key 2) permitting use of the vehicle is stored in advance. In addition, as shown in FIG. 5B, the second storage unit 32 stores biometric information and duplicated data of ID information stored in the first storage unit 8 of the biometric authentication device 1 as a backup. A second master storage area 47 corresponding to the first master area 27, a third user storage area 48 corresponding to the first user area 28, and a fourth user storage area 49 corresponding to the second user area 29. I have. Similar to the first master storage area 27, the second master storage area 47 includes one data storage unit 47a. Further, like the first user storage area 27, the third user storage area 48 includes five data storage units 48a to 48e. Similar to the second user storage area 29, the fourth user storage area 49 includes three data storage units 49a to 49c. Further, the personal data storage method in the third user storage area 48 and the fourth user storage area 49 is the same as that in the first user storage area 28 and the second user storage area 29 described above, and biometric authentication is performed at the time of biometric information registration. The personal data transmitted from the device 1 is stored in the data storage units 48a to 48e and 49a to 49c in which the oldest personal data is stored, and the labels of the data storage units 48a to 48e and 49a to 49c are rewritten. . In addition, the second storage unit 32 has a control program for causing the second control unit 33 to perform door lock / unlock processing using the electronic key 2, biometric authentication processing described later, and biometric information registration processing. Is remembered. Further, when the biometric authentication device 1 needs to be replaced due to a failure or the like, the second storage unit 32 stores it as a backup in the second master storage area 47, the third user storage area 48, and the fourth user storage area 49. Although the control program for executing the copy process for copying the personal data to the new biometric authentication device 1 by the second control unit 33 is provided, the copy process is not directly related to the present invention. Detailed description is omitted.

  The second control unit 33 executes the control program stored in the second storage unit 32 to control the biometric authentication device 1, the door lock control unit 41, the electric steering lock 42, and the engine control unit 43, which will be described later. The control which performs is performed. In the present embodiment, the user registration switch 24, the temporary release switch 25, the first control unit 8, and the second control unit 33 can selectively register biometric information for each user storage area 28 and 29. Means.

  The second communication unit 34 transmits control signals such as a power-on signal, an authentication start signal, and an STL release signal, and biometric information and ID information registered in the second storage unit 32 to the biometric authentication device 1. A connector or the like for connecting a code from the biometric authentication device 1 can be used for the second communication unit 34.

  The input / output unit 35 is electrically connected to a door lock control unit 41, an electric steering lock 42, an engine control unit 43, a start switch 44, a keyless switch 45, and the like. Signals can be sent and received.

  Next, the operation of the biometric authentication system having the above configuration will be described.

  FIG. 6 is a flowchart showing the processing contents in the smart entry control unit 3. Here, when it is detected that the keyless switch 45 provided on the outer handle of the vehicle is operated, the detection signal is input to the smart entry control unit 3. By determining that the keyless switch 45 has been operated (step S1), the smart entry control unit 3 executes door unlock processing (step S2) for unlocking the door. In unlocking the door, a request signal is transmitted from the transmission antenna, and an identification signal transmitted from the electronic key 2 that has received the request signal is received by the reception antenna. Then, the ID information in the identification signal is compared with the ID information stored in the second storage unit 32. If they match, an unlock signal is transmitted to the door lock control unit 41 to lock the door. Is released. The ID information at the time of authentication is stored in the second storage unit 32.

  Further, when it is detected that the master registration switch 23 has been operated, the detection signal is input to the smart entry control unit 3. When the smart entry control unit 3 determines that the master registration switch 23 has been operated (step S3), the smart entry control unit 3 proceeds to a master registration process for registering biometric information to be a master described later.

  Further, when door opening / closing is detected by door opening / closing detection means (not shown) such as a switch or a sensor, the detection signal is input to the smart entry control unit 3. When the smart entry control unit 3 determines that the door is opened and then closed (step S4), the biometric authentication device 1 is driven by outputting a power-on signal (step S5) and outputs an authentication start signal. The biometric authentication process is started (step S6).

  As will be described later, if the biometric authentication process in the biometric authentication device 1 is completed and the result is transmitted (step S7), whether or not the corresponding biometric information has been registered as a result of collation in the authentication process. Judgment is made (step S8). Note that the result of the biometric authentication process transmitted from the biometric authentication device 1 is not only authentication OK or NG, but in the case of authentication OK, in which region in the first storage unit 8 of the biometric authentication device 1 It includes information indicating whether or not it has been authenticated by stored biometric information. For example, when authentication is performed using biometric information stored in the first master storage area 27, information “authentication OK” and information “authentication in the first master storage area 27” are encoded, and biometric authentication is performed. It is transmitted from the device 1 side. This result information is stored in the second storage unit 32 and can be referred to in post-processing.

  If the collated result is authenticated (step S8: YES), it is set in the temporary release mode in which the vehicle can be used without performing biometric authentication when the vehicle described later is temporarily lent to another person. The temporary release flag is deleted, and the temporary release mode is released (step S9). That is, the temporary release mode is canceled once the biometric information is authenticated.

  On the other hand, if the biometric authentication device 1 cannot receive a signal (step S7: NO), or if the collated result is not authenticated (step S8: NO), the presence / absence of a temporary release flag is confirmed and temporarily released. It is determined whether or not the mode is selected (step S10). And if it is not temporary cancellation | release mode (step S10: NO), a process will be complete | finished, and if it is temporary cancellation | release mode (step S10: YES), an electronic key vehicle interior authentication process (step S11) will be performed. In the electronic key in-vehicle authentication process (step S11), the request signal is transmitted from the transmission antenna toward the vehicle, the identification signal transmitted from the electronic key 2 that has received the request signal is received by the reception antenna, and the ID in the identification signal is received. The information is compared with the ID information stored in the second storage unit 32 during the door unlocking process (step S2) (step S12). If they do not match (step S12: NO), the process ends. If they match (step S12: YES), the process proceeds to a process for confirming the operation of the start switch 44 (step S13).

  If the start switch 44 is input (step S13: YES), an STL release signal is transmitted to the electric steering lock 42 (step S14). The electric steering lock 42 releases the locked state of the electric steering lock 42 based on the STL release signal. Subsequently, an engine start signal is transmitted to the engine control unit 43 (step S15). The engine control unit 43 starts the engine based on the engine start signal. As a result, the vehicle is ready for use and can be driven.

  On the other hand, if the start switch 44 is not input (step S13: NO), the user registration switch 24 is not input (step S16: NO), and it is detected that the temporary release switch 25 is operated (step S17: YES). ), A temporary release mode setting process for setting the temporary release mode is executed.

  The temporary release mode is a state in which the vehicle can be used without performing biometric authentication when the vehicle is temporarily lent to another person. As described above, the result of biometric authentication is authenticated. Even without this, it is possible to unlock the steering and start the engine by authenticating the ID information set in the electronic key 2. When this temporary release mode is set, prior biometric authentication is required and is stored in the first master storage area 27 and the first user storage area 28 of the first storage unit 8 of the biometric authentication device 1. It is possible to set the temporary release mode only by authentication using biometric information. That is, not everyone can set the temporary release mode. For example, in the authentication based on biometric information such as a friend stored in the second user storage area 29 of the biometric authentication device 1, the temporary release mode is set. Can not. In this way, by configuring the device usage restriction for each area where the biological information is stored, it is not necessary to record the usage restriction information for each biological information, which facilitates management of the biological information. Become.

  In the present embodiment, the temporary release mode setting process first confirms the contents of the authentication result received from the biometric authentication device 1 in step S7, and adds “authentication with the first master storage area 27” or If the content of “authentication in the first user storage area 28” is included, the temporary release mode flag is stored in the second storage unit 32, and the temporary release mode is set. If not, the process ends. To do.

  If the start switch 44 is not input (step S13: NO) and it is detected that the user registration switch 24 is operated (step S16: YES), it is determined whether or not the temporary release switch 25 is operated. This is performed (step S18). If it is not detected that the temporary release switch 25 has been operated (step S18: NO), the contents of the authentication result received from the biometric authentication device 1 in step S7 are confirmed, and the authentication result indicates “first master storage”. If the content of “authentication in area 27” is included, it is determined that master authentication is performed in advance (step S19: YES), and family registration processing described later is executed. On the other hand, if the authentication result does not include “authentication in the first master storage area 27”, it is determined that master authentication has not been performed (step S19: NO), and the process proceeds to step 13.

  On the other hand, when it is detected that the temporary release switch 25 has been operated (step S18: YES), the contents of the authentication result received from the biometric authentication device 1 in step S7 are confirmed, If the content of “authentication in one master storage area 27” is included, it is determined that master authentication has been performed in advance (step S20: YES), and a general registration process described later is executed. On the other hand, if the authentication result does not include “authentication in the first master storage area 27”, it is determined that master authentication is not performed (step S20: NO), and the process proceeds to step 13.

  That is, when only the user registration switch 24 is operated, the family registration process is executed, and when the user registration switch 24 and the temporary release switch 25 are operated simultaneously, the general registration process is executed. Moreover, when performing a family registration process and a general registration process, prior biometric authentication is required, and the biometric information stored in the first master storage area 27 of the first storage unit 8 of the biometric authentication device 1 It is possible to execute the family registration process and the general registration process only by the authentication by. Thereby, the person who has registered the biometric information as a master can manage the registration of the biometric information to the biometric authentication device 1 and can prevent the biometric information from being illegally registered.

  In this embodiment, the master authentication before the general registration process and the family registration process are confirmed by the second control unit 33 on the smart entry control unit 3 side. The first control unit 9 may be used. In this case, the authentication result at the time of the prior biometric authentication process may be stored in the first storage unit 8, and the authentication result may be confirmed at the time of the general registration process and the family registration process.

  FIG. 7 is a flowchart showing the content of the biometric authentication process in the biometric authentication device 1. Here, when a power-on signal is input from the smart entry control unit 3 (step S21), the power is turned on to start driving (step S22). At this time, the system of the first control unit 9 is initialized (step S23). And it is judged whether it is biometric authentication based on the input authentication start signal (step S24).

  If it is not biometric authentication (authentication start signal) (step S24: NO), it is determined whether biometric information is registered (master registration, family registration, general registration) (steps S25, S26, S27). If there is, each registration process of biometric information is executed (for example, a new vein pattern is registered for the master finger registered as the finger of the person to be authenticated).

  If it is biometric authentication (step S24: YES), infrared rays are irradiated by the infrared irradiation unit 5 (step S28). Then, the finger is detected (step S29), and it is determined whether or not the finger is placed on the finger placement unit 14 (step S30). If it is determined that a finger is placed on the finger placement unit 14 (step S30: YES), a vein pattern of the finger is photographed by the camera unit 6 (step S31). The captured vein pattern is digitized by image processing (step S32) and stored in advance in the first master storage area 27, the first user storage area 28, and the second user storage area 29 of the first storage unit 8. It collates with biometric information (step S33). Then, the verification result is transmitted to the smart entry control unit 3 (step S34), and the biometric authentication process is terminated. If it is determined that no finger is placed on the finger placement unit 14 (step S30: NO), it is determined whether 30 seconds have passed since infrared irradiation (step S35), and if 30 seconds have not passed (step S35). (S35: NO), the process returns to step S29 to detect the finger again. If 30 seconds have elapsed (step S35: YES), the process ends.

  FIG. 8 is a flowchart showing the contents of the master registration process in the smart entry control unit 3. The master registration process is a process of newly registering a vein pattern for the master finger registered as the finger of the person to be authenticated in the first master storage area 27 of the first storage unit 8 of the biometric authentication device 1. For the person to be authenticated who has the biometric information stored in the first master storage area 27, the authority to use the vehicle, the authority to set the temporary release mode, the family registration process, and the general registration process to be described later are executed. The authority that can be given. In the present embodiment, the biometric authentication device 1 is configured to store duplicate data of biometric information and ID information stored in the first storage unit 8 of the biometric authentication device 1 on the smart entry control unit 3 side as a backup. 1 and the smart entry control unit 3 are configured to perform mutual communication of biometric information and ID number and store the biometric information and ID information to be master-registered in the second storage unit 32 of the smart entry control unit 3 as well. doing.

  Here, first, it is confirmed whether or not the biometric information as a master has been registered (step S41). Whether or not the master biometric information has been registered is confirmed by the second smart entry control unit 3 storing the same data as the first master storage area 27 of the first storage unit 8 of the biometric authentication device 1. This is performed by determining whether or not biological information is stored in the second master storage area 47 of the storage unit 32. This confirmation process may be performed on the biometric authentication device 1 side.

  If the biometric information to be the master has been registered (step S41: YES), the process ends, and if the biometric information to be the master has not been registered (step S41: NO), master registration to the biometric authentication device 1 is performed. A start signal is output to start the master registration process (step S42).

  As will be described later, if the registration of biometric information in the biometric authentication device 1 is completed and the same biometric information and ID information as the registered data are transmitted (step S43), the biometric information and ID information are stored in the second information. It memorize | stores in the 2nd master memory area 47 of the memory | storage part 32 (step S44). And in order to confirm whether the same biometric information and ID information were registered into each memory | storage part with the biometrics authentication apparatus 1 and the smart entry control unit 3, the biometric information and ID memorize | stored in the 2nd master memory area 47 are used. Information is returned to the biometric authentication device 1 (step S45).

  As will be described later, when the biometric information is confirmed by the biometric authentication device 1 and the result is transmitted (step S46), the master registration process is terminated.

  FIG. 9 is a flowchart showing the contents of the master registration process in the biometric authentication device 1. Here, first, when a master registration start signal is received from the smart entry control unit 3, the master registration process from step S25 in FIG. 7 to FIG. 9 is executed.

  Here, first, infrared rays are irradiated by the infrared irradiation unit 5 (step S51). Then, the finger is detected (step S52), and it is determined whether or not the finger is placed on the finger placement unit 14 (step S53). If it is determined that a finger is placed on the finger placement unit 14 (step S53: YES), the vein pattern of the finger is photographed by the camera unit 6 (step S54). The captured vein pattern is digitized by image processing (step S55), and ID information corresponding to the acquired biological information (vein pattern) is created (step S56). And after connecting this biometric information and ID information into one data, it memorize | stores in the data storage part 27a of the 1st master storage area 27 of the 1st memory | storage part 8 (step S57), and the memorize | stored biometric information And ID information is transmitted to the smart entry control unit 3 side (step S58). When biometric information and ID information for registration confirmation are received from the smart entry control unit 3 side (step S59), the received biometric information and ID information, and biometric information and ID stored in the first master storage area 27 are received. It is confirmed whether or not the information matches (step S60).

  And when biometric information and ID information do not correspond (step S60: NO), the warning which warns that registration failed is issued (step S61), and a process is complete | finished. On the other hand, if the biometric information and the ID information match (step S60: YES), a registration end signal is transmitted to the smart entry control unit 3 side (step S62), and the process is ended.

  In the present embodiment, in consideration of theft prevention, once the biometric information serving as the master is registered in the first master storage area 27, the biometric information serving as the master is subsequently changed or deleted by the user ( (Including the master) is configured so that it cannot be performed. In addition, when it becomes necessary to change the biometric information to be the master for some reason, the master biometric information is changed by connecting a dedicated terminal by a vehicle dealer or the like to change the master biometric information. Information may be updated.

  FIG. 10A is a flowchart showing the contents of the family registration process in the smart entry control unit 3. The family registration process is a process of newly registering a vein pattern for the master finger registered as the finger of the person to be authenticated in the first user storage area 28 of the first storage unit 8 of the biometric authentication device 1. The person to be authenticated who has the biometric information stored in the first user storage area 28 is given authority to use the vehicle and authority to set the temporary release mode.

  Here, first, the family registration processing signal is output to the biometric authentication device 1 to start the family registration processing (step S71). As will be described later, when the registration of biometric information in the biometric authentication device 1 is completed and the same biometric information and ID information as the registered data are transmitted (step S72: YES), a timer is started (step S73). ), The received biological information and ID information are stored in the third user storage area 48 of the second storage unit 32 (step S74). Then, it is determined whether or not 30 seconds have elapsed since the timer was started (step S75). If 30 seconds have not elapsed (step S75: NO), the process proceeds to step S72, where biometric information and The ID information reception standby state is set.

  When 30 seconds have elapsed since the timer was started (step S75: YES), a registration end signal is transmitted to the biometric authentication device 1 side (step S76), and the process ends.

  FIG. 10B is a flowchart showing the contents of the family registration process in the biometric authentication device 1. Here, first, when a family registration processing signal is received from the smart entry control unit 3, the process proceeds from step S24 in FIG. 7 to step S26, and the family registration processing in FIG. 10B is executed.

  Here, first, infrared rays are irradiated by the infrared irradiation unit 5 (step S81). Then, the finger is detected (step S82), and it is determined whether or not the finger is placed on the finger placement unit 14 (step S83). If it is determined that a finger is placed on the finger placement unit 14 (step S83: YES), a vein pattern of the finger is photographed by the camera unit 6 (step S84). The captured vein pattern is digitized by image processing (step S85), and the acquired biological information (numerized vein pattern) and the biological information stored in the first user storage area 28 of the first storage unit 8 are used. In comparison, it is confirmed whether or not the registration is double registration (step S86). If the same item has already been registered (step S86: NG), a warning indicating double registration is performed (step S87), and the process ends.

  On the other hand, when the same biometric information is not registered (step S86: OK), ID information corresponding to the acquired biometric information is created (step S88). And after connecting this biometric information and ID information into one data, it memorize | stores in the 1st user memory area 28 of the 1st memory | storage part 8 (step S89), and memorize | stores the biometric information and ID information which were memorize | stored. Transmit to the smart entry control unit 3 side (step S90). When the registration end signal is received from the smart entry control unit 3 side (step S91: YES), the process ends. When the registration end signal is not received (step S91: NO), the process proceeds to step S81 and the family registration is performed again. Execute the process.

  In addition, as described above, the storage method of the biological information in the first user storage area 28 of the first storage unit 8 and the third user storage area 48 of the second storage unit 32 is the user storage area 28, 48. The biometric information is sequentially stored in each of the five data storage units 28a to 28e and 48a to 48e, and after the biometric information is stored in all the data storage units 28a to 28e and 48a to 48e, the first is the first. The stored biometric information is deleted and new biometric information is stored. Thereby, even if the biometric information is stored in all the data storage units 28a to 28e and 48a to 48e, new biometric information can be registered without performing the process of deleting the biometric information separately. is there.

  FIG. 11A is a flowchart showing the contents of the general registration process in the smart entry control unit 3. The general registration process is a process of newly registering a vein pattern for the master finger registered as the finger of the person to be authenticated in the second user storage area 29 of the first storage unit 8 of the biometric authentication device 1. Only the authority to use the vehicle is given to the person to be authenticated who has the biometric information stored in the second user storage area 29.

  Here, first, a general registration processing signal is output to the biometric authentication device 1 to start the general registration registration processing (step S101). As will be described later, when registration of biometric information in the biometric authentication device 1 is completed and the same biometric information and ID information as the registered data is transmitted (step S102: YES), a timer is started (step S103). ), The received biometric information and ID information are stored in the fourth user storage area 49 of the second storage unit 32 (step S104). Then, it is determined whether or not 30 seconds have elapsed since the timer was started (step S105). If 30 seconds have not elapsed (step S105: NO), the process proceeds to step S102, where biometric information and The ID information reception standby state is set.

  On the other hand, when 30 seconds have elapsed since the timer was started (step S105: YES), a registration end signal is transmitted to the biometric authentication device 1 side (step S106), and the process is ended.

  FIG. 11B is a flowchart showing the contents of the general registration process in the biometric authentication device 1. Here, first, when a general registration processing signal is received from the smart entry control unit 3, the process proceeds from step S24 in FIG. 7 to step S27, and the general registration processing in FIG. 11B is executed.

  Here, first, infrared rays are irradiated by the infrared irradiation unit 5 (step S111). Then, the finger is detected (step S112), and it is determined whether or not the finger is placed on the finger placement unit 14 (step S113). If it is determined that a finger is placed on the finger placement unit 14 (step S113: YES), a vein pattern of the finger is photographed by the camera unit 6 (step S114). The captured vein pattern is digitized by image processing (step S115), and ID information corresponding to the acquired biological information is created (step S116). Then, after the biometric information and the ID information are connected to form one data, the biometric information and the ID information are stored in the second user storage area 29 of the first storage unit 8 (step S117). It transmits to the entry control unit 3 side (step S118). When the registration end signal is received from the smart entry control unit 3 side (step S119: YES), the process is ended. When the registration end signal is not received (step S119: NO), the process proceeds to step S111, and again the general entry Execute the registration process.

  Note that the biometric information is stored in the second user storage area 29 of the first storage unit 8 and the fourth user storage area 49 of the second storage unit 32, as described above, in each of the user storage areas 29 and 49. The biometric information is sequentially stored in the three data storage units 29a to 29c and 49a to 49c. After the biometric information is stored in all the data storage units 29a to 29c and 49a to 49c, the biometric information is stored first. The biometric information is erased and new biometric information is stored. As a result, even when biometric information is stored in all the data storage units 29a to 29c and 49a to 49c, new biometric information can be registered without performing the process of deleting the biometric information. When it is desired to delete all the biometric information stored in the second user storage area 29 and the fourth user storage area 49, for example, the authentication target person who has registered the biometric information as the master stores the second user storage. By registering biometric information in the area 29 three times, all registered biometric information is overwritten on the master biometric information, and as a result, all registered biometric information is deleted from the second user storage area 29. .

  As described above, since deletion of biometric information is performed by registering biometric information, a button or the like for deleting biometric information is unnecessary. Therefore, it is possible to reduce the number of components from which biometric information is deleted, and the biometric authentication system can be downsized. In addition, since the master storage area for storing the biometric information as the master and the user storage area for registering the biometric information of the user are provided separately, the biometric information of the master is deleted when the biometric information of the user is deleted. The biometric information can be deleted by additionally registering the biometric information.

  In addition, since it is configured to limit the use of the device for each area where the biometric information is stored, it is not necessary to record the use restriction information for each biometric information, and thus management of the biometric information becomes easy. . In addition, even if the area for storing the biometric information is divided into a plurality of parts as described above, it is possible to delete the biometric information by additionally registering the biometric information. There is no need to provide additional components for deleting information, the components can be reduced, and the biometric authentication system can be downsized.

  In addition, the biometric authentication system of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, in the embodiment, each process is executed using the two control units 9 and 33, but each process may be executed by one control unit.

  In the registration / update means of the above embodiment, when the maximum number of biometric information is already stored in the user storage areas 28 and 29 at the time of biometric information registration in the user storage areas 28 and 29, the user storage area 28. , 29, the biometric information registered first in the user storage areas 28, 29 is deleted and the new biometric information is registered in the user storage areas 28, 29. However, it is not limited to this. For example, for each biometric information in the user storage areas 28 and 29, the date last used for the authentication process is stored instead of the data label, and the biometric information corresponding to the oldest date is registered at the time of biometric information registration. May be deleted and new biometric information may be registered. Further, for example, the number of times the authentication process has been performed is stored in place of the data label for each piece of biometric information in the user storage areas 28 and 29, and the biometric information with the least number of uses is registered at the time of biometric information registration. May be deleted and new biometric information may be registered.

It is a block diagram of the biometric authentication system concerning this embodiment. It is a block diagram of the smart entry control unit and biometric authentication device of FIG. (A) is a front view of the biometric authentication device of FIG. 1, and (b) is a sectional view thereof. It is a figure which shows the state which has arrange | positioned the finger to the finger arrangement | positioning part of FIG. (A) shows the storage area of a 1st memory | storage part, (b) is a conceptual diagram which shows the storage area of a 2nd memory | storage part. It is a flowchart which shows the content of the authentication process in the smart entry control unit of FIG. It is a flowchart which shows the content of the authentication process in the biometrics apparatus of FIG. It is a flowchart which shows the content of the master registration process in the smart entry control unit of FIG. It is a flowchart which shows the content of the master registration process in the biometrics apparatus of FIG. (A) shows the contents of the family registration process in the smart entry control unit of FIG. 1, and (b) is a flowchart showing the contents of the family registration process in the biometric authentication device of FIG. (A) shows the content of the general registration process in the smart entry control unit of FIG. 1, (b) is a flowchart which shows the content of the general registration process in the biometrics authentication apparatus of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Biometric authentication apparatus, 3 ... Control unit, 4 ... Case (biometric information reading means), 5 ... Infrared irradiation part (biological information reading means), 6 ... Camera part (biometric information) Reading means), 8... First storage section (storage section), 9... First control section (control section: registration updating means), 27... First master storage area (master storage area), 28 ... 1st user storage area (user storage area), 29 ... 2nd user storage area (user storage area).

Claims (2)

The biometric information reading means for reading the biometric information, the storage section for storing the biometric information, the biometric information acquired by the biometric information reading means and the biometric information stored in the storage section are compared, and if they match, authentication is performed. In a biometric authentication system including a control unit that executes biometric authentication processing to determine that the subject is a target person,
The storage unit is provided with a user storage area having a predetermined number of biometric information registration areas to which a data label indicating a predetermined order is assigned , and an authority to execute registration of biometric information in the user storage area. A master storage area for storing biometric information as a master is provided separately,
When the maximum number of biometric information is already stored in the user storage area at the time of biometric information registration in the user storage area, the control unit performs a process of registering biometric information in the user storage area. Each of the data labels is rewritten to one smaller value, and among the rewritten data labels in the user storage area, the biometric information with the smallest data label is deleted, and the user storage area is A biometric authentication system provided with a registration updating means for registering new biometric information with a new data label .   In the user storage area, a first user storage area in which authority to execute a predetermined function is given to the stored biometric information, and a authority different from the first user storage area is given to stored biometric information. 2. The biometric authentication system according to claim 1, wherein a two-user storage area is provided, and a selection registration unit that enables registration of biometric information for each user storage area is provided in the control unit.

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