JP4175056B2 - Personal authentication device, personal authentication system, portable terminal, personal authentication program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a personal authentication technique for authenticating an individual using personal biometric data such as a face, iris, fingerprint, and voice.
[0002]
[Prior art]
As a personal authentication device, for example, an authentication device based on face matching as described in JP-A-11-167632 is generally well known. In this authentication device, an image of the person's (registrant) 's face is captured and its feature amount is registered in advance, and when entering a specific place, the person's face image is captured by a camera provided at the entrance. The feature amount is extracted by capturing the image, the feature amounts of the captured image and the registered image are compared, and the identity of the person or the other person is identified based on the matching degree of the feature amount.
[0003]
FIG. 13 is a diagram for explaining a conventional personal authentication device using face matching as described above. In the figure, B is a personal authentication device installed in the vicinity of the door 53 and includes a camera 51 and a display unit 52. Whether or not the person to be authenticated is a registered person by capturing the face image of the person to be authenticated with the camera 51 and comparing the feature amount of the captured face image with the feature amount of the face image registered in advance. Is determined. The determination result is displayed on the display unit 52. If the determination result is normal, the door 53 is unlocked and the knob 54 can be operated to enter the room. On the other hand, if the determination result is not normal, the door 53 is not unlocked and the knob 54 cannot be operated to enter the room.
[0004]
[Problems to be solved by the invention]
However, in such a conventional apparatus, since the personal authentication device B is attached at a position that matches the height of a general person, for a wheelchair user or a person with a short height, the height H of the camera 51 from the floor is high. It was too high and it was very difficult to capture a face image. As a solution to this problem, as shown in FIG. 14, it is conceivable that the personal authentication device B is movable up and down, but for this purpose, a movable mechanism, a guide rail and the like (not shown) are required. Installation may not be possible, and the cost increases, which is not preferable in terms of design. Further, as shown in FIG. 15, it is conceivable to install the personal authentication devices B at the upper and lower positions, but in this case, there is a problem that the cost is doubled.
[0005]
Therefore, as shown in FIG. 16, a wheelchair user 60 takes a picture of his / her face using a portable terminal 61 such as a camera-equipped mobile phone, and as shown in FIG. If it is transmitted to the apparatus wirelessly or the like, it is not necessary to capture a face image with the personal authentication apparatus, and the above-mentioned problems can be solved. However, in this system, since the authentication data (face image) can be input to the personal authentication device even at a location away from the personal authentication device, the person himself / herself remotely operates the portable terminal 61, so It becomes possible to enter the room illegally, which causes a problem in terms of security.
[0006]
The present invention solves the above-mentioned problems, and the problem is that a person other than the user by remote operation in a system for transmitting authentication data input from a portable terminal to a personal authentication device. Is to improve security by preventing unauthorized access.
[0007]
[Means for Solving the Problems]
A personal authentication device according to the present invention is a personal authentication device that performs personal authentication using personal biometric data, and includes a storage means in which biometric data of a registrant is stored in advance, visible time, In addition, pattern generation means for generating a random pattern that changes irregularly together, display means for displaying the random pattern generated by the pattern generation means, biometrics data of the person to be authenticated input in the mobile terminal, and imaging of the mobile terminal A first receiving unit that receives the random pattern in the display unit from the portable terminal, the biometric data of the authenticated person received by the receiving unit, and the biometric data of the registrant stored in the storage unit; The matching means, the random pattern received by the receiving means and the pattern generating means A second verification unit that compares the generated random pattern, and a determination unit that determines that the person to be authenticated is a registrant when both of the verification results of the first and second verification units are normal. Yes. Here, biometrics data refers to data obtained from an individual's biometric features, such as feature amount data such as face, iris, fingerprint, and voice.
[0008]
In the present invention, in addition to the biometric data collation by the first collation means, the random pattern collation by the second collation means is performed, the biometric data collation result is normal, and the random pattern collation result is also normal. In such a case, the person is authenticated for the first time. Therefore, access is not permitted only by matching the biometric data, and access is permitted only when the random patterns match. And in order for the collation result of the random pattern to be normal, the person to be authenticated must always be in the vicinity of the personal authentication device, and the random pattern displayed on the authentication device must be imaged with the portable terminal. . By doing so, it is possible to secure the same time and place, and to prevent unauthorized access by another person from the remote location.
[0009]
A typical example of biometric data is a face image. In this case, the portable terminal captures a face image and a random pattern, and these are received by the receiving means of the personal authentication device. According to this, the camera attached to the portable terminal can be used as biometric data input means, and both the face image and the random pattern can be captured by this camera.
[0010]
In a preferred embodiment, the determination result by the determination means is also displayed on the display means on which the random pattern is displayed. According to this, it is not necessary to separately provide a display unit for displaying a random pattern and a display unit for displaying a determination result, and the configuration can be simplified because a single display unit can be used.
[0011]
The display means can be composed of an LED array in which a plurality of LEDs are arranged in a plane. According to this, a random pattern is clearly displayed by lighting of LED, and a random pattern can be accurately imaged with a portable terminal.
[0012]
The display means may display a random pattern based on the reception means receiving the biometric data from the portable terminal, or the random pattern based on the detection signal from the detection means for detecting the approach of the person to be authenticated. It may be displayed.
[0013]
The personal authentication system according to the present invention includes the personal authentication device described above and a portable terminal that transmits the biometric data of the person to be authenticated to the personal authentication device.
[0014]
A portable terminal according to the present invention includes an input unit for inputting biometric data of a person to be authenticated, an imaging unit for imaging a random pattern displayed on a display unit of a personal authentication device, and biometrics input by the input unit Transmitting means for transmitting data and a random pattern imaged by the imaging means to the personal authentication device. This mobile terminal can be configured from an existing camera-equipped mobile phone. In this case, an input unit and an imaging unit are configured by the camera, and a face image and a random pattern captured by the camera are transmitted to the personal authentication device by the transmission unit.
[0015]
The personal authentication program according to the present invention is a program stored in the mobile terminal, a procedure for accepting input of biometric data of the person to be authenticated, and a procedure of transmitting the input biometric data to the personal authentication device And a program for causing the computer to execute a procedure for imaging the random pattern displayed on the display means and a procedure for transmitting the captured random pattern to the personal authentication device. This program may be stored in advance in the mobile terminal, or may be downloaded from a server via a communication line (for example, the Internet). Or what was stored in recording media, such as a memory card with which a portable terminal is mounted | worn, may be used.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing an embodiment of a personal authentication device A according to the present invention. In the figure, reference numeral 1 denotes a camera as an image pickup apparatus for picking up the face of the person to be authenticated, and is composed of an electronic camera equipped with an image pickup element such as a CCD (charge coupled device). This camera 1 is a camera for imaging the face of a general person to be authenticated who is not a wheelchair user or a person with a short height. Reference numeral 2 denotes a transmission / reception unit that performs wireless communication with a portable terminal, which will be described later, and constitutes reception means in the present invention. Reference numeral 3 denotes an antenna provided in the transmission / reception unit 2. Reference numeral 4 denotes a human detection unit for detecting the approach of the person to be authenticated, which constitutes the detection means in the present invention, and is composed of, for example, a reflective photoelectric sensor. Reference numeral 5 denotes a display unit that displays a random pattern and a determination result, which will be described later, and constitutes display means according to the present invention, for example, an LED array in which a plurality of LEDs (light emitting diodes) are arranged in a plane. Reference numeral 6 denotes a control unit that performs processing such as collation and determination, and includes a computer having a CPU. Reference numeral 7 denotes a storage unit including a memory such as a ROM or a RAM, which constitutes a storage unit according to the present invention, and stores a program executed by the control unit 6 and facial image data (face feature amount) of the registrant. Pre-stored.
[0017]
In the control unit 6, 8 to 15 represent functional blocks realized by the CPU. Reference numeral 8 denotes an image acquisition unit that acquires image data by acquiring an image captured by the camera 1, and acquires image data by acquiring a random pattern image received from the portable terminal by the transmission / reception unit 2. Reference numeral 9 denotes a face detection unit, which detects a face from a captured image acquired from the camera 1 by the image acquisition unit 8. For this face detection, a known method such as a method by skin color detection, a method of extracting a difference from a background image, a method of extracting the likelihood of a face from pattern matching is used. Reference numeral 10 denotes a feature amount extraction unit which extracts a face feature amount, that is, a feature amount related to the shape and position of each part such as the eyes, nose, mouth, and ears from the face image obtained by the face detection unit 9. The feature amount is extracted by using a known method for extracting the feature amount from the grayscale image of each part by template matching, for example. Reference numeral 11 denotes a face collation unit, which constitutes a first collation unit according to the present invention. The face feature amount of the person to be authenticated extracted by the feature amount extraction unit 10 and the registrant stored in the storage unit 7 The feature amount of the face is collated. Specifically, the degree of similarity is calculated by comparing the feature quantities of the respective faces, and it is determined whether or not the degree of similarity is equal to or greater than a predetermined threshold. It is determined that they match, and it is determined that the two face images do not match unless the threshold value is exceeded.
[0018]
A pattern detection unit 12 detects a random pattern from the captured image acquired from the transmission / reception unit 2 by the image acquisition unit 8. Reference numeral 13 denotes a pattern generation unit that constitutes the pattern generation means in the present invention, and generates a random pattern (see FIG. 3) that can be visually recognized and changes irregularly with time. Reference numeral 14 denotes a pattern matching unit, which constitutes a second matching unit in the present invention, which collates a random pattern detected by the pattern detection unit 12 with a random pattern generated by the pattern generation unit 13, and both patterns. It is determined whether or not the two match. Reference numeral 15 denotes a determination unit that performs personal authentication based on the collation result in the face collation unit 11 and the collation result in the pattern collation unit 14. Specifically, if both verification results are normal, it is determined that the person to be authenticated is a registrant, and if at least one of both verification results is not normal, the person to be authenticated is not a registrant. judge.
[0019]
FIG. 2 is a diagram showing an installation example of the personal authentication device A having the above-described configuration. The personal authentication device A is installed at the entrance of a room where only a specific person is allowed to enter the room. Reference numerals 1, 3, and 5 denote the above-described camera, antenna, and display unit, respectively. As in the case of FIG. 13, the personal authentication device A is attached to a position that matches the height of a general person, so the camera 1 captures images of a general authenticated person who is not a wheelchair user or a short person. It is a face. The human detection unit 4 is not shown here, but is installed at an appropriate location near the entrance. For example, the human detection unit 4 may be provided on the ceiling. 20 is a door at the entrance of the room, and 21 is a knob for opening the door 20. The door 20 is always locked, and the knob 21 cannot be operated to enter the room.
[0020]
FIG. 3 is a diagram illustrating an example of a random pattern displayed on the display unit 5. As described above, the display unit 5 is composed of the LED array 5a in which a plurality of LEDs are arranged in a plane, and the black circles in FIG. 3 represent the LEDs that emit light. Further, the random pattern generated in the pattern generation unit 13 is a pattern that changes irregularly with time, and the LED emits light according to the pattern, so that the display unit 5 has different patterns at intervals of several seconds. Is displayed. For example, when a few seconds elapse after the pattern as shown in FIG. 3A is displayed, the pattern changes as shown in FIG. 3B, and when a few seconds elapse after that, the pattern becomes as shown in FIG. To change. Similarly, the pattern displayed on the display unit 5 changes irregularly at intervals of several seconds.
[0021]
FIG. 4 is a block diagram showing an embodiment of the portable terminal 30 according to the present invention. In the present embodiment, the mobile terminal 30 is composed of a camera-equipped mobile phone. In the figure, reference numeral 31 denotes a camera composed of an electronic camera equipped with an image pickup device such as a CCD, which constitutes the input means and the image pickup means in the present invention, images the face of the person to be authenticated, and the personal authentication device A. The random pattern displayed on the display unit 5 is imaged. Reference numeral 32 denotes an operation unit composed of various keys. Reference numeral 33 denotes a display unit composed of an LCD (liquid crystal display). Reference numeral 34 denotes a transmission / reception unit that constitutes a transmission unit according to the present invention, and wirelessly transmits a face or a random pattern image captured by the camera 31 to the transmission / reception unit 2 of the personal authentication device A. Reference numeral 35 denotes an antenna provided in the transmission / reception unit 34. Reference numeral 36 denotes a voice input unit, which includes a microphone that inputs voice during a call. Reference numeral 37 denotes an audio output unit, which is composed of a speaker that outputs audio during a call or incoming call. Reference numeral 38 denotes a memory composed of a ROM, a RAM, and the like. The memory 38 stores a personal authentication program P according to the present invention. Reference numeral 39 denotes a CPU as control means constituting the computer, which controls the entire portable terminal 30.
[0022]
The mobile terminal 30 and the personal authentication device A described above constitute a personal authentication system according to the present invention.
[0023]
Next, an authentication procedure in the personal authentication system as described above will be described. Here, an outline procedure will be first described by taking as an example a case where a wheelchair user accesses the personal authentication device A of FIG. 2 using the mobile terminal 30. First, as shown in FIG. 5, a wheelchair user 41 (authenticated person) who has reached the vicinity of the place where the personal authentication device A is installed on the wheelchair 42, uses his camera 31 attached to the mobile terminal 30 to Take a picture of the face. The face image may be captured in advance at a location away from the installation location of the personal authentication device A. Next, the wheelchair user 41 operates the operation unit 32 of the mobile terminal 30 to transmit the captured face image from the antenna 35 to the personal authentication device A as illustrated in FIG. 6. When the personal authentication device A receives a face image from the portable terminal 30, a random pattern is displayed on the display unit 5, so that the wheelchair user 41 continues to display the display unit of the personal authentication device A as shown in FIG. The random pattern displayed in 5 is imaged by the camera 31 of the mobile terminal 30. When the imaging is completed, an image of a random pattern is automatically transmitted from the antenna 35 to the personal authentication device A as shown in FIG.
[0024]
In the personal authentication device A, the transmission / reception unit 2 receives a face image transmitted from the portable terminal 30 via the antenna 3, and subsequently receives a random pattern image. The received face image is sent to the face detection unit 9 through the image acquisition unit 8 to detect the face, and the feature amount extraction unit 10 extracts the feature amount of the face. The face matching unit 11 calculates a similarity from the extracted feature quantity and the feature quantity stored in the storage unit 7, and matches the match / mismatch of the face depending on whether the similarity is equal to or greater than a predetermined threshold. To do. On the other hand, the received random pattern image is sent to the pattern detection unit 12 via the image acquisition unit 8 to detect the pattern. The pattern matching unit 14 compares the detected pattern with the pattern generated by the pattern generation unit 13 and checks whether both patterns match. Then, the determination unit 15 is registered in the storage unit 7 with the face image transmitted from the portable terminal 30 when both the collation result in the face collation unit 11 and the collation result in the pattern collation unit 14 are normal. When the face image matches and the pattern transmitted from the portable terminal 30 matches the pattern generated by the pattern generation unit 13, the wheelchair user 41 is determined to be a registrant, and the entrance door 20 Release the lock. Thereby, the wheelchair user 41 can operate the knob 21 to open the door 20 and enter the room.
[0025]
Next, details of the processing procedure in each of the portable terminal 30 and the personal authentication device A will be described. FIG. 9 is a flowchart showing a processing procedure in the mobile terminal 30 and shows a control procedure of the personal authentication program P executed by the CPU 39. First, when the transmission mode to the personal authentication device A is selected by the operation of the operation unit 32 (step S1), for example, a message “Please take a face image” is displayed on the display unit 33. A face is imaged (steps S2 and S3). The captured face image is temporarily stored in a predetermined area of the memory 38 (FIG. 4). When the imaging of the face is completed (step S3: YES), for example, a message “Please send a face image” is displayed on the display unit 33. 35 to the personal authentication device A (step S4). When the transmission is completed, for example, a message “please image the pattern” is displayed on the display unit 33, and the random pattern displayed on the display unit 5 of the personal authentication device A is imaged by the camera 31 (steps S5 and S6). ). The captured image of the pattern is temporarily stored in a predetermined area of the memory 38. When imaging of the random pattern is completed (step S6: YES), for example, a message “pattern image is transmitted” is displayed on the display unit 33, and the captured random pattern is transmitted from the transmission / reception unit 34 and the antenna 35 to the personal authentication device A. It is automatically transmitted (step S7), and the series of procedures is terminated. In this example, the case where the face image is transmitted by the operation of the operation unit 32 has been described as an example. However, as with the pattern image, the face image may be automatically transmitted when the face imaging is completed. Good.
[0026]
FIG. 10 is a flowchart showing a processing procedure in the personal authentication apparatus A, and shows a control procedure executed by the control unit 6. In the personal authentication device A, whether or not the human detection unit 4 has detected a person is constantly monitored (step S11), and when a person is detected (step S11: YES), the human detection unit 4 starts imaging on the camera 1. A signal is sent, and the camera 1 operates to start imaging (step S12). Subsequently, it is determined whether or not the image acquisition unit 8 has acquired a face image from the camera 1 (step S13).
[0027]
When a face image can be acquired from the camera 1 (step S13: YES), the person to be authenticated at that time is not a wheelchair user 41 but a general person. In this case, the facial feature quantity is extracted by the feature quantity extraction unit 10 (step S14), and the face matching unit 11 based on the extracted feature quantity and the facial feature quantity stored in the storage unit 7. Similarity is calculated and face matching is performed (steps S15 and S16). In this case, if the calculated similarity is equal to or greater than a predetermined threshold, it is determined that the collation result is normal (face matching) (step S16: YES). If the similarity is not equal to or greater than the predetermined threshold, the collation result is determined. Is not normal (face mismatch) (step S16: NO).
[0028]
If the collation result in the face collation unit 11 is normal, the determination unit 15 authenticates that the person to be authenticated is the registrant (step S17) and performs a room entry permission process (step S18). That is, the determination result OK as shown in FIG. 11 (a) is displayed on the display unit 5 (circle), and a signal for permitting entry is output from the determination unit 15 as a determination output, whereby the door 20 is locked. After being released, the person to be authenticated can enter the room by operating the knob 21. On the other hand, if the collation result in the face collation unit 11 is not normal, the determination unit 15 rejects authentication that the certifier is the registrant (step S19), and performs a room entry prohibition process (step S20). That is, the determination result NG as shown in FIG. 11B is displayed on the display unit 5 (× mark), and a signal for prohibiting entry is output from the determination unit 15 as a determination output, and the locking of the door 20 is maintained. The For this reason, the person to be authenticated cannot enter the room by operating the knob 21. Note that FIG. 11 is an example of display, and it is a matter of course that the determination result may be displayed in other modes (for example, characters).
[0029]
Next, in step S13, when a face image cannot be acquired from the camera 1 (step S13: NO), it is determined whether or not a face image can be acquired from the transmission / reception unit 2 (step S21). If the transmission / reception unit 2 does not receive a face image from the portable terminal 30 (step S21: NO), the process returns to step S12 and the imaging by the camera 1 is continued. If the transmitting / receiving unit 2 receives a face image from the portable terminal 30 (step S21: YES), the person to be authenticated at that time is a wheelchair user 41, and therefore a random pattern is displayed on the display unit 5 (step S22). . After that, it waits for the captured random pattern image to be transmitted from the mobile terminal 30 (step S23), and when the transmission / reception unit 2 receives the random pattern image (step S23: YES), pattern detection is performed from the received image. The unit 12 detects a random pattern, and the pattern collation unit 14 collates whether or not the detected pattern matches the pattern generated by the pattern generation unit 13 (step S24). In this case, if the detection pattern and the generation pattern match, it is determined that the collation result is normal, and if the detection pattern and the generation pattern do not match, it is determined that the collation result is not normal. Whether or not both patterns match is determined by whether or not the received pattern is the same as the pattern currently displayed on the display unit 5. Alternatively, in consideration of the time required to capture the pattern, whether or not the received pattern is the same as the pattern displayed on the display unit 5 from the time point that is traced back for a very short period of time (for example, 30 seconds) from the present to the present. You may make it determine.
[0030]
If the collation result at the pattern collation unit 14 is normal (step S25: YES), all the LEDs on the display unit 5 are turned off to end the display of the random pattern (step S26), and then face collation after step S14. Move on to processing. In step S14, the feature amount extraction unit 10 extracts a facial feature amount from the face image acquired in step S21. Then, based on the extracted feature quantity and the face feature quantity stored in the storage unit 7, the face matching unit 11 calculates the similarity and performs face matching (steps S15 and S16). If the similarity is greater than or equal to a predetermined threshold, it is determined that the collation result is normal (face matching) (step S16: YES), and if the similarity is not greater than or equal to the predetermined threshold, the collation result is not normal (face Discrepancy) (step S16: NO).
[0031]
If the collation result in the face collation unit 11 is normal, the determination unit 15 authenticates that the wheelchair user 41 is the registrant (step S17), and performs a room entry permission process (step S18). That is, the determination result OK as shown in FIG. 11 (a) is displayed on the display unit 5 (circle), and a signal for permitting entry is output from the determination unit 15 as a determination output, whereby the door 20 is locked. After being released, the wheelchair user 41 can enter the room by operating the knob 21. On the other hand, if the collation result in the face collation unit 11 is not normal, the discrimination unit 15 rejects authentication that the wheelchair user 41 is the registrant (step S19), and performs the entry prohibition process (step S20). ). That is, the determination result NG as shown in FIG. 11B is displayed on the display unit 5 (× mark), and a signal for prohibiting entry is output from the determination unit 15 as a determination output, and the locking of the door 20 is maintained. The For this reason, the wheelchair user 41 cannot enter the room by operating the knob 21.
[0032]
In step S25, if the collation result by the pattern collation unit 14 is not normal, that is, if the patterns do not match (step S25: NO), the random pattern photographed by the portable terminal 30 is displayed on the current display unit 5. If it is determined that the image has been captured in the past, the process proceeds to step S19 and authentication is rejected.
[0033]
In this way, the determination unit 15 performs authentication based on the matching result between the face matching unit 11 and the pattern matching unit 14, the pattern matching result is normal (pattern matching), and the face matching result Is also normal (face match), the person to be authenticated is authenticated as the registrant, but the pattern matching result is not normal (pattern mismatch) or the face matching result is not normal (face mismatch) , Reject authentication. For this reason, if the face image of the person to be authenticated only matches the face image of the registrant, the person to be authenticated is not authenticated, and the current random pattern displayed on the display unit 5 and the mobile terminal 30 are captured. The person to be authenticated is authenticated as the person only when the random pattern is matched.
[0034]
As a result, even if it is attempted to access only the face image of the person from the portable terminal 30 at a location away from the personal authentication device A, the random pattern is not transmitted and the pattern matching result is not normal. Authentication is rejected. Even if a random pattern of the display unit 5 is captured in advance and stored in the mobile terminal 30 and transmitted together with the face image of the person, the random pattern is not the pattern currently displayed on the display unit 5. However, since the pattern is displayed in the past, the pattern matching result is not normal and authentication is rejected.
[0035]
Therefore, in order to authenticate the person when the face matching result is normal, the condition is that the place and time are identical, that is, the pattern currently displayed in the vicinity of the personal authentication device A is captured. . By doing so, it becomes impossible for the person to remotely operate the portable terminal 30 at a place away from the personal authentication device A and to allow other persons to enter the room illegally, thereby improving security.
[0036]
In the above-described embodiment, since a face image is used as biometric data for authentication, the face image can be input by the camera 31 attached to the mobile terminal 30, and means for inputting biometric data is provided. There is no need to provide it separately, and both the face image and the random pattern can be captured by the camera 31. An existing camera-equipped mobile phone can be used as the mobile terminal 30.
[0037]
In the above-described embodiment, since the determination result is displayed on the display unit 5 on which the random pattern is displayed, a display unit for displaying the random pattern and a display unit for displaying the determination result are provided separately. There is no need, and the configuration is simplified.
[0038]
Further, in the above-described embodiment, the display unit 5 is configured by the LED array 5a in which a plurality of LEDs are arranged in a plane, so that a random pattern is clearly displayed by turning on the LEDs, and the camera of the mobile terminal 30 At 31, the random pattern can be accurately imaged.
[0039]
FIG. 12 is a flowchart showing another embodiment of the present invention, and shows another example of the processing procedure in the personal authentication apparatus A. In FIG. 12, the same steps as those in FIG. 10 are denoted by the same reference numerals. In FIG. 10, when the transmission / reception unit 2 receives an image from the mobile terminal 30 (step S21), a random pattern is displayed on the display unit 5 (step S22). In FIG. 12, the human detection unit 4 detects a human. (Step S11) At the same time when the camera 1 starts imaging (Step S12), a random pattern is displayed on the display unit 5 (Step S12a). In addition, if a face image can be acquired from the camera 1 (step S13), the random pattern display is terminated at that time (step S13a). The other points are the same as those in FIG. 10, and the description thereof is omitted here. In the case of FIG. 10, it is necessary to transmit a face image before imaging a random pattern, but in the case of FIG. 12, it is also possible to image a random pattern first and then transmit the face image. .
[0040]
The present invention can adopt various embodiments other than those described above. For example, as biometric data, in addition to the face image described above, data such as iris, fingerprint, and voice can be used. In this case, input means corresponding to each biometric data is provided in the personal authentication device A and the portable terminal 30. As an example, when fingerprint collation is used, a fingerprint collator is provided in addition to the cameras 1 and 31.
[0041]
Further, the display unit 5 of the personal authentication device A may be constituted by an LCD (liquid crystal display) instead of the LED array 5a described above. In this case, the random pattern displayed on the display unit 5 may be a video or a character.
[0042]
Moreover, in the said embodiment, although the mobile phone with a camera was mentioned as an example as the portable terminal 30, the portable terminal of this invention is not restricted to a mobile phone, The means to input biometrics data, The means to image a random pattern, Any type of mobile terminal may be used as long as it is equipped with a means for transmitting biometric data and a random pattern. Further, the communication means between the portable terminal 30 and the personal authentication device A is not limited to the above-described radio, but may be one using infrared rays or the like.
[0043]
Furthermore, the personal authentication device of the present invention is not limited to the one installed at the entrance of the room as described above, but may be installed at the entrance of a gate that restricts entry to a specific place.
[0044]
【The invention's effect】
According to the present invention, since the random pattern is collated, only when the random pattern is imaged in the vicinity of the personal authentication device, the identity is authenticated and access such as entering the room is permitted. It becomes impossible to allow unauthorized access to anyone other than the person by the operation from, so that security can be improved.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a personal authentication device according to the present invention.
FIG. 2 is a diagram showing an installation example of a personal authentication device.
FIG. 3 is a diagram showing an example of a random pattern.
FIG. 4 is a block diagram showing an embodiment of a mobile terminal according to the present invention.
FIG. 5 is a diagram for explaining a schematic procedure of authentication.
FIG. 6 is a diagram for explaining a schematic procedure of authentication.
FIG. 7 is a diagram for explaining an outline procedure of authentication.
FIG. 8 is a diagram illustrating an outline procedure of authentication.
FIG. 9 is a flowchart showing a processing procedure in a portable terminal.
FIG. 10 is a flowchart showing a processing procedure in the personal authentication device.
FIG. 11 is a display example of a determination result.
FIG. 12 is a flowchart showing another embodiment.
FIG. 13 is a diagram illustrating a conventional example.
FIG. 14 is a diagram illustrating a conventional example.
FIG. 15 is a diagram illustrating a conventional example.
FIG. 16 is a diagram illustrating a conventional example.
FIG. 17 is a diagram illustrating a conventional example.
[Explanation of symbols]
1 Camera
2 Transceiver
4 Human detection unit
5 display section
5a LED array
6 Control unit
7 Memory part
11 Face matching unit
13 Pattern generator
14 Pattern matching part
15 judgment part
30 Mobile terminal
31 Camera
34 Transceiver
41 Wheelchair users (certified persons)
A personal authentication device
P Personal authentication program

Claims (10)

A personal authentication device that authenticates an individual using personal biometric data,
Storage means for storing biometric data of the registrant in advance;
Pattern generating means for generating a random pattern that is visible and changes irregularly with time;
Display means for displaying the random pattern generated by the pattern generation means;
Receiving means for receiving from the portable terminal the biometric data of the person to be authenticated input at the portable terminal and the random pattern in the display means imaged by the portable terminal;
A first collation unit for collating the biometric data of the person to be authenticated received by the reception unit with the biometric data of the registrant stored in the storage unit;
A second collating unit that collates the random pattern received by the receiving unit with the random pattern generated by the pattern generating unit;
A determination unit that determines that the person to be authenticated is a registrant when both of the verification results of the first and second verification units are normal;
A personal authentication device comprising: The personal authentication device according to claim 1,
The biometric data is a face image,
The personal authentication apparatus, wherein the receiving unit receives a face image and a random pattern captured by the mobile terminal from the mobile terminal. In the personal authentication device according to claim 1 or 2,
A personal authentication apparatus, wherein the determination result by the determination means is displayed on the display means. In the personal authentication device according to any one of claims 1 to 3,
The personal authentication apparatus, wherein the display means comprises an LED array in which a plurality of LEDs are arranged in a plane. In the personal authentication device according to any one of claims 1 to 4,
The personal authentication apparatus, wherein the display means displays the random pattern based on the fact that the receiving means has received biometric data from a portable terminal. In the personal authentication device according to any one of claims 1 to 4,
Provided with detecting means for detecting the approach of the person to be authenticated,
The personal authentication apparatus, wherein the display means displays the random pattern based on a detection signal from the detection means. A personal authentication system comprising a personal authentication device that authenticates an individual using personal biometric data and a portable terminal that transmits biometric data of the person to be authenticated to the personal authentication device,
The personal authentication device includes:
Storage means for storing biometric data of the registrant in advance;
Pattern generating means for generating a random pattern that is visible and changes irregularly with time;
Display means for displaying the random pattern generated by the pattern generation means;
Receiving means for receiving from the portable terminal the biometrics data of the person to be authenticated input at the portable terminal, and a random pattern in the display means imaged by the portable terminal;
A first collation unit for collating the biometric data of the person to be authenticated received by the reception unit with the biometric data of the registrant stored in the storage unit;
A second collating unit that collates the random pattern received by the receiving unit with the random pattern generated by the pattern generating unit;
Determination means for determining that the person to be authenticated is a registrant when both of the verification results of the first and second verification means are normal,
The portable terminal is
An input means for inputting biometrics data of the person to be authenticated;
Imaging means for imaging a random pattern displayed on the display means of the personal authentication device;
A personal authentication system, comprising: biometric data input by the input unit; and a transmission unit that transmits a random pattern captured by the imaging unit to a personal authentication device. A portable terminal that transmits biometric data of a person to be authenticated to the personal authentication device according to claim 1,
An input means for inputting biometrics data of the person to be authenticated;
Imaging means for imaging a random pattern displayed on the display means of the personal authentication device;
Transmitting means for transmitting biometric data input by the input means and a random pattern captured by the imaging means to a personal authentication device;
A portable terminal characterized by comprising: The mobile terminal according to claim 8, wherein
The mobile terminal is a camera-equipped mobile phone including a camera that constitutes the input unit and the imaging unit, and transmits the face image and random pattern captured by the camera from the transmission unit to the personal authentication device. A featured mobile terminal. A program stored in the mobile terminal according to claim 8,
A procedure for accepting input of biometrics data of the person to be authenticated;
Transmitting the input biometric data to a personal authentication device;
A procedure for imaging a random pattern displayed on the display means;
Transmitting the imaged random pattern to a personal authentication device;
A program for personal authentication to make a computer execute.

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