JP2002236665A - Personal authentication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sufficiently reliable personal authentication device capable of accommodate variations in accuracy by a difference in input environments of biological information or a secular change. SOLUTION: This system includes an environment measuring means which measures the input environment of the biological information, and determines the stage of the applicable input environment from the input environments previously categorized into one or more stages, an environment-specific biological information storing means which stores the data of the prescribed biological information as biological information registry data so as to accommodate the respective stages of the input environment, an environment-specific biological information registering means which makes the environment-specific biological information storing means store the biological information registry data for registration so as to accommodate the stage of the determined input environment, a biological information input means which inputs the biological information as the input biological information environment, an environment biological information collating means which collates the input biological information data against the biological information registry data registered so as to accommodate the stage of the input environment of the input biological information, and an environment collating determining means which determines whether a user is really who he/she says he/she is, based on the collated results of the environment biological information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an apparatus for identifying an individual using biological information. In particular, the present invention relates to an apparatus that takes into account changes in the input environment of biological information and aging.

[0002]

2. Description of the Related Art Conventionally, personal authentication devices using biometric information such as fingerprints, irises, voice prints, faces, and palms have been employed for applications such as access control and personal computer access. Authentication using biometric information is an excellent authentication method in terms of security and ease of use because there is no risk of forgetting, losing or being stolen compared to authentication using non-biological information such as a password or an IC card.

[0003] Although this biometric information is unique and unique to an individual, the same feature cannot always be extracted. In particular, the characteristics may greatly fluctuate due to differences in the input environment of biological information and aging. As a personal authentication method using biometric information, the input biometric information is compared with pre-registered biometric information registration data, and a similarity indicating how similar is calculated is calculated. If it exceeds the set threshold, it will be judged as the person in question,
If it does not exceed it, it is a general method to judge as another person.

In the prior art, even if the input environment of biometric information changes, the same authentication method is used as it is, or
In general, authentication is performed by changing a threshold value according to the input environment of biometric information.

[0005]

However, in the conventional authentication method or apparatus, when the input environment of the biometric information changes, the authentication is performed using the biometric information registration data registered in advance in the different input environment of the biometric information. However, there is a problem that the characteristics with some fluctuations are compared with each other, and the authentication accuracy cannot be sufficiently guaranteed.

The present invention has been made in order to solve such a problem, and provides a sufficiently reliable personal authentication apparatus that copes with a difference in the input environment of biometric information and a change in accuracy due to aging. is there.

[0007]

The personal authentication apparatus of the present invention measures an input environment of biological information and determines an input environment stage corresponding to the input environment from one or more input environments. Measuring means, environment-specific biometric information storage means for storing predetermined biometric information data as biometric information registration data corresponding to each stage of the input environment, and the biometric information corresponding to the determined input environment stage. Environment-specific biometric information registration means for storing and registering information registration data in the environment-specific biometric information storage means, biometric information input means for inputting biometric information as input biometric information, data of the input biometric information, and the input biometric data A biometric information matching means for matching with registered biometric information registration data corresponding to a stage of the information input environment; and There have has a structure in which a same environment verification determining unit that determines whether the person. With this configuration, the usage environment is measured, and authentication is performed using the registered data of the biometric information registered in advance in the same environment as the usage environment. A highly reliable personal authentication device can be realized.

The personal authentication apparatus of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment from one or more input environments. An environment-specific biometric information storage unit that stores data of predetermined biometric information as biometric information registration data corresponding to each stage of the input environment, and the biometric information registration data corresponding to the determined input environment stage. An environment-specific biometric information registration unit that stores and registers the environment-specific biometric information storage unit, a biometric information input unit that inputs biometric information as input biometric information, and an input environment of the data of the input biometric information and the input biometric information A biometric information matching unit that performs matching with registered biometric information registration data corresponding to the step of: And a same environment verification determining means for determining whether said biometric information includes fingerprints, voiceprint, face, the configuration is information about either the iris. With this configuration, the usage environment is measured, and authentication is performed using the registered data of the biometric information registered in advance in the same environment as the usage environment. A highly reliable personal authentication device can be realized.

The personal authentication device of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment from one or more input environments. An environment-specific biometric information storage unit that stores data of predetermined biometric information as biometric information registration data corresponding to each stage of the input environment, and the biometric information registration data corresponding to the determined input environment stage. An environment-specific biometric information registration unit that stores and registers the environment-specific biometric information storage unit, a biometric information input unit that inputs biometric information as input biometric information, and an input environment of the data of the input biometric information and the input biometric information A biometric information matching unit that performs matching with registered biometric information registration data corresponding to the step of: The personal authentication apparatus uses information about a fingerprint as the biometric information, and the environment measuring means performs humidity measurement using a hygrometer. are doing. With this configuration, a fingerprint is used as biometric information, humidity is measured using a hygrometer as an environmental measurement device, and authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment. It is easy to obtain features of the same nature, such as the same sweating of the finger, and a highly reliable personal authentication device with high authentication accuracy can be realized.

The personal authentication apparatus of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment from one or more input environments. An environment-specific biometric information storage unit that stores data of predetermined biometric information as biometric information registration data corresponding to each stage of the input environment, and the biometric information registration data corresponding to the determined input environment stage. An environment-specific biometric information registration unit that stores and registers the environment-specific biometric information storage unit, a biometric information input unit that inputs biometric information as input biometric information, and an input environment of the data of the input biometric information and the input biometric information A biometric information matching unit that performs matching with registered biometric information registration data corresponding to the step of: The personal authentication device uses information about a voiceprint as the biometric information, and the environment measurement unit measures background noise using a microphone. Have. With this configuration, a voiceprint is used as biometric information, a background noise is measured using a microphone as an environment measuring device, and authentication is performed using biometric information registration data registered in advance in the same environment as the use environment. It is easy to obtain features of the same property, such as the same magnitude of voiceprint amplitude, and a highly reliable personal authentication device with high authentication accuracy can be realized.

Further, the personal authentication device of the present invention measures an input environment of biological information and determines an input environment stage corresponding to the input environment from one or more stages of input environment. An environment-specific biometric information storage unit that stores data of predetermined biometric information as biometric information registration data corresponding to each stage of the input environment, and the biometric information registration data corresponding to the determined input environment stage. An environment-specific biometric information registration unit that stores and registers the environment-specific biometric information storage unit, a biometric information input unit that inputs biometric information as input biometric information, and an input environment of the data of the input biometric information and the input biometric information A biometric information matching unit that performs matching with registered biometric information registration data corresponding to the step of: The personal authentication apparatus uses information about a face or information about an iris as the biometric information, and the environment measuring means uses a camera to determine lighting conditions. It has a configuration for performing measurement. With this configuration, the face or iris is used as the biometric information, the illuminance is measured using the camera as an environment measurement device, and authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment. In some cases, it is easy to obtain features of the same property such as the contours of the face and the constituent elements of the face, and a highly reliable personal authentication device with high authentication accuracy can be realized.

The personal authentication device of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment from one or more input environments. An environment-specific biometric information storage unit that stores data of predetermined biometric information as biometric information registration data corresponding to each stage of the input environment, and the biometric information registration data corresponding to the determined input environment stage. An environment-specific biometric information registration unit that stores and registers the environment-specific biometric information storage unit, a biometric information input unit that inputs biometric information as input biometric information, and an input environment of the data of the input biometric information and the input biometric information A biometric information matching unit that performs matching with registered biometric information registration data corresponding to the step of: The same environment matching determination means for determining whether or not the same environment biometric information as the biometric information registration data used for matching when the user is determined to be a person when the same environment matching determination means determines the user Registration data updating means for updating the registration data based on predetermined information including the registration date and time of the same environment biometric information registration data with the data of the input biometric information used for the collation when the person is determined to be the principal. It has a configuration provided. With this configuration, it is possible to prevent a decrease in accuracy due to aging and to realize a reliable personal authentication device.

Further, the personal authentication device of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment, which is divided into one or more stages in advance. An environment-specific biometric information storage unit that stores data of predetermined biometric information as biometric information registration data corresponding to each stage of the input environment, and the biometric information registration data corresponding to the determined input environment stage. An environment-specific biometric information registration unit that stores and registers the environment-specific biometric information storage unit, a biometric information input unit that inputs biometric information as input biometric information, and an input environment of the data of the input biometric information and the input biometric information A biometric information matching unit that performs matching with registered biometric information registration data corresponding to the step of: The same environment matching determination means for determining whether or not the same environment biometric information as the biometric information registration data used for matching when the user is determined to be a person when the same environment matching determination means determines the user Registration data updating means for updating the registration data based on predetermined information including the registration date and time of the same environment biometric information registration data with the data of the input biometric information used for the collation when the person is determined to be the principal. The registration data updating means is configured to perform the update when the registration date and time of the environmental biometric information registration data is before a predetermined period. With this configuration, it is possible to update registered data by the user's own judgment when the frequency of rejection of the user is high, etc. In addition, it is possible to prevent accuracy deterioration due to aging, and to use easy and reliable personal authentication The device can be realized.

Further, the personal authentication apparatus of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment which is divided into one or more stages in advance. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. Environment-specific biometric information registration means for recording and registering the input biometric information data in the environment-specific biometric information storage means. With this configuration, the usage environment is measured, and authentication is performed using the biometric information registration data registered in advance in the same environment as the usage environment. In addition to realizing a reliable personal authentication device, even if the registered data of the user himself is not stored in the same environment as the usage environment or if there is no corresponding person in the same environment verification, there is no By performing authentication using biometric information registration data registered in advance, it is possible to identify the user himself / herself.

Further, the personal authentication device of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment, which is divided into one or more stages in advance. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. Environment-specific biometric information registration means for recording and registering the input biometric information data in the environment-specific biometric information storage means, wherein the biometric information is information on any of a fingerprint, a voiceprint, a face, and an iris. It has a certain configuration. With this configuration, the usage environment is measured, and authentication is performed using the biometric information registration data registered in advance in the same environment as the usage environment. In addition to realizing a reliable personal authentication device, even if the registered data of the user himself is not stored in the same environment as the usage environment or if there is no corresponding person in the same environment verification, there is no By performing authentication using biometric information registration data registered in advance, it is possible to identify the user himself / herself.

Further, the personal authentication apparatus of the present invention measures an input environment of biometric information, and determines an input environment stage corresponding to the input environment from at least one of the input environments. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. Environment-specific biometric information registration means for recording and registering the data of the input biometric information in the environment-specific biometric information storage means, and the personal authentication device uses information about a fingerprint as the biometric information, The environment measuring means has a configuration for measuring humidity using a hygrometer. With this configuration, a fingerprint is used as biometric information, humidity is measured using a hygrometer as an environmental measurement device, and authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment. It is easy to obtain features of the same nature, such as the same sweating of the finger, and a highly reliable personal authentication device with high authentication accuracy can be realized.

Also, the personal authentication apparatus of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment from one or more stages of input environment. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. Environment-specific biometric information registration means for recording and registering the data of the input biometric information in the environment-specific biometric information storage means, and the personal authentication device uses information about a voiceprint as the biometric information, The environment measuring means has a configuration for measuring background noise using a microphone. With this configuration, a voiceprint is used as biometric information, a background noise is measured using a microphone as an environment measuring device, and authentication is performed using biometric information registration data registered in advance in the same environment as the use environment. It is easy to obtain features of the same property, such as the same magnitude of voiceprint amplitude, and a highly reliable personal authentication device with high authentication accuracy can be realized.

Further, the personal authentication apparatus of the present invention measures an input environment of biometric information, and determines an input environment stage corresponding to the input environment from one or more input environments. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. Environment-specific biometric information registration means for recording and registering the input biometric information data in the environment-specific biometric information storage means, and wherein the personal authentication apparatus includes information about a face or information about an iris as the biometric information. And the environment measuring means has a configuration for measuring lighting conditions using a camera. With this configuration, the face or iris is used as the biometric information, the illuminance is measured using the camera as an environment measurement device, and authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment. In some cases, it is easy to obtain features of the same property such as the contours of the face and the constituent elements of the face, and a highly reliable personal authentication device with high authentication accuracy can be realized.

The personal authentication apparatus of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment from one or more stages of input environment. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. Environment-specific biometric information registration means for recording and registering the input biometric information data in the environment-specific biometric information storage means, and the different-environment biometric information matching means is stored for each stage of the input environment. The biometric information registration data is configured to perform collation using the biometric information registration data stored in correspondence with the stage closest to the stage of the input environment determined by the environment measuring means. With this configuration, since the matching is performed using the biometric information registration data stored in correspondence with the stage closest to the stage of the input environment, a reliable personal authentication device with high authentication accuracy can be realized.

Further, the personal authentication device of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment, which is divided into one or more stages in advance. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. The environment-specific biometric information registration means for recording and registering the input biometric information data in the environment-specific biometric information storage means, and when the identity is determined by the environment matching determination means, the identity is determined. Based on predetermined information including the registration date and time of the same environment biometric information registration data, the same environment biometric information registration data that is used for the matching when And a registration data updating means for updating with the used input biometric information data. With this configuration, it is possible to prevent a decrease in accuracy due to aging and to realize a reliable personal authentication device.

The personal authentication apparatus of the present invention measures an input environment of biometric information and determines an input environment stage corresponding to the input environment from one or more input environments. Biometric information input means for inputting biometric information as input biometric information, environment-specific biometric information storage means for storing predetermined input biometric information data corresponding to each stage of the input environment, and data of the input biometric information A biometric information matching means for comparing the biometric information registration data stored in correspondence with the input environment stage of the biometric information input; and The environment matching determination means for determining whether the input biometric information data and the input biometric information input environment are stored at a different stage from the input environment stage. Different environment biometric information matching means for performing matching, different environment matching determination means for determining whether or not the user is a person based on the matching result of the different environment biometric information matching means, and corresponding to the stage of the measured input environment. The environment-specific biometric information registration means for recording and registering the input biometric information data in the environment-specific biometric information storage means, and when the identity is determined by the environment matching determination means, the identity is determined. Based on predetermined information including the registration date and time of the same environment biometric information registration data, the same environment biometric information registration data that is used for the matching when Registration data updating means for updating with the used input biometric information data, wherein the registration data updating means sets a registration date and time of the same environment biometric information registration data before a predetermined period. It has a configuration that the update. With this configuration, it is possible to update registered data by the user's own judgment when the frequency of rejection of the user is high, etc. In addition, it is possible to prevent accuracy deterioration due to aging, and to use easy and reliable personal authentication The device can be realized.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A personal authentication device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a basic configuration of a personal authentication apparatus for 1: 1 authentication of biometric information corresponding to environmental changes according to the first embodiment of the present invention. Here, biometric information 1: 1 authentication refers to inputting a unique ID of an individual and comparing data of registered biometric information corresponding to the input personal ID with data of biometric information input for authentication. Authentication to determine whether the person is a person or another person.

In FIG. 1, an environment measuring means 1 measures a current environment using various measuring devices corresponding to biological information used for authentication. Here, the environment to be measured is divided into several stages in advance, and the environment measuring means 1 determines which stage the measured environment is located in and outputs it.
The environment-specific biometric information registration means 2 stores predetermined registration data for authentication in a storage location of the environment-specific biometric information storage means 6, which will be described later.

The environment-specific biometric information storage means 6 has locations for storing some data, and the storage locations are divided into several stages, for example, environment A, environment B, environment C, and so on. Corresponding to each environment. The environment-specific biometric information registration unit 2 stores the registration data of the individual's biometric information in a storage location corresponding to the environment measured by the environment measurement unit 1. The biometric information input means 3 acquires any one of biometric information necessary for authentication, such as a fingerprint, a voiceprint, a face, and an iris.

The environmental biometric information collating means 4 extracts a characteristic amount necessary for collation from the biometric information acquired by the biometric information input means 3. Then, the registered data corresponding to the personal ID, which is stored in the storage location corresponding to the current environment measured by the environment measuring means 1 in the environment-specific biometric information storing means 6, is compared with the above feature amount, Calculate the similarity.

The same environment collation judging means 5 uses the similarity calculated by the same environment biometric information collating means 4 to determine whether or not the person is the principal. If the similarity calculated by the environmental biometric information matching means 4 exceeds a preset threshold value, it is determined to be the person and accepted, and if not, it is determined to be another person and rejected.

Next, the biological information 1: 1 according to the first embodiment.
The operation of the personal authentication device for authentication will be described. FIG.
9 is a flowchart illustrating a flow of processing in the personal authentication device for 1: 1 authentication of biometric information corresponding to environmental changes according to the first embodiment. In step S601, the user inputs a personal ID unique to an individual.

In step S602, the environment measuring means 1
It measures the current environment, determines which stage it is in, and outputs it. Environment A, Environment B, Environment C for convenience of explanation
... While there are several stages of environments, it is assumed here that environment A is measured as the current environment. Next, in step S603, the environment-specific biometric information registration unit 2 accesses the environment-specific biometric information storage unit 6 and sets the environment A as the current environment.
Then, it is confirmed whether the registered data corresponding to the personal ID input in step S601 exists in the storage location corresponding to.

If it is determined in step S603 that the registration data does not exist in the corresponding storage location, the process proceeds to step S604, and if it is determined that the registration data exists, the process proceeds to step S604.
The process jumps to step S605.

If it is determined in step S603 that the registered data does not exist in the corresponding storage location, it indicates that the data is not registered in the same environment. Therefore, step S60
At 4, the environment-specific biometric information registration means 2 accesses the environment-specific biometric information storage means 6 and stores the registration data corresponding to the personal ID in the biometric information registration data of environment A, which is the current environment.

If it is determined in step S603 that the registered data exists in the corresponding storage location, it is registered in the same environment. Therefore, in step S605, the biological information input unit 3 inputs the biological information of the user.

In step S606, the environmental biometric information matching unit 4 accesses the biometric information storage unit 6 for each environment, and registers the registered data corresponding to the personal ID from the biometric information registered data of the environment A as the current environment. The similarity is calculated by reading and comparing this with the feature amount extracted from the biometric information input in step S605.

In step S607, the environment collation judging means 5 makes a judgment similar to the judgment shown in the description of FIG. As a result of the determination, if the collation result indicates the person, the user is authenticated, and the process ends. If the collation result indicates another person, the person is rejected, and the process ends.

As described above, the personal authentication apparatus according to the first embodiment of the present invention inputs the unique ID of the individual, and registers the registered data corresponding to the personal ID and the input biometric information data. In the authentication to determine whether the user is an individual or another person, the usage environment is measured, and authentication is performed using the registered biometric information registered in advance in the same environment as the usage environment. It is possible to realize a reliable personal authentication device that can easily obtain characteristics of properties and has high authentication accuracy.

Next, a personal authentication apparatus according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram showing a basic configuration of a personal authentication device for biometric information 1: n authentication corresponding to environmental change according to the second embodiment of the present invention. Here, the biometric information 1: n authentication detects the most similar registrant by comparing the registered data of the biometric information of all registered users with the data of the biometric information input for authentication. Refers to authentication.

In FIG. 2, the environment measuring means 7 measures the current environment using various measuring devices corresponding to the biological information used for authentication. Here, the environment to be measured is divided into several stages in advance, and the environment measuring means 7 determines and outputs the stage where the measured environment is located.
The biometric information input means 8 includes a fingerprint, a voiceprint, a face,
One of the biological information such as the iris is acquired.

The environmental biometric information collating means 9 extracts a characteristic amount necessary for collation from the biometric information acquired by the biometric information input means 8. Then, the registration data of all members corresponding to the current environment measured by the environment measurement unit 7 in the environment-specific biometric information storage unit 14 is compared with the above-described feature amounts, and the similarity with all the registrants is calculated.

The environment collation judging means 10 specifies a user by using the similarity of all registrants calculated by the environment biometric information collating means 9. If the highest similarity among the similarities of all registrants calculated by the environmental biometric information matching means 9 exceeds a preset threshold,
The user who gives the similarity is determined as the person, and the person is specified. If the user is not exceeded, it is determined that there is no corresponding person and rejected.

The different environment biometric information matching means 11 corresponds to the feature amount of the biometric information acquired by the biometric information input means 8 and the current environment measured by the environment measuring means 7 of the environment-specific biometric information storage means 14. The registration data of all the members is compared with the above feature amounts, and the similarity with all the registrants is calculated.

The different environment collation judging means 12 specifies a user by using the similarity of all registrants calculated by the different environment biometric information collating means 11. If the one showing the highest similarity among the similarities of all the registrants calculated by the different environment biometric information matching means 11 exceeds a preset threshold, the user giving the similarity is determined. The person is determined as the person, and the person is identified. If the number does not exceed the number, the person is determined to be absent and rejected.

The environment-specific biometric information registration means 13 stores the input biometric information in a storage location of the environment-specific biometric information storage means 14 which will be described later. The biological information storage means 14 for each environment includes:
There are locations for storing some data, and the storage locations correspond to each environment divided into several stages, for example, environment A, environment B, environment C, and the like. In these storage locations, registration data of personal biometric information is stored in advance. The input biological information is stored in a storage location corresponding to the current environment measured by the environment measuring means 7.

Next, the biological information 1: n of the second embodiment
The operation of the personal authentication device for authentication will be described. FIG.
9 is a flowchart illustrating a flow of processing in the personal authentication device for biometric information 1: n authentication corresponding to environmental change according to the second embodiment. In step S701, the environment measuring unit 7 measures the current environment and outputs the stage in which the environment is located. For convenience of explanation, it is assumed that environment A is measured as the current environment in the presence of several stages of environment A, environment B, environment C.

In step S702, the biological information input means 8
Input biometric information of the user. Step S703
Then, the environment biometric information matching means 9 accesses the environment-specific biometric information storage means, reads out the registered data of all the members from the storage location corresponding to environment A, which is the current environment, and reads the biometric information input in step S702. Is compared with the feature amount extracted from, and the similarity with all the registrants is calculated.

In step S704, the environment collation judging means 10 performs the same judgment as the judgment shown in the description of FIG. 2, and if the judgment result indicates that there is a corresponding person, the person is identified and the processing is performed. If the process has ended and there is no corresponding person, the process proceeds to step S705.

In step S705, the different-environment biometric information matching unit 11 accesses the biometric information storage unit for each environment, and stores data corresponding to an environment other than the current environment A (for example, environment B, environment C, etc.). The registration data of all the members is read from the place, and this is compared with the feature amount from the biometric information input in step S702, and the similarity with all the registrants is calculated.

Here, for the sake of explanation, assuming that the environment closest to environment A, which is the current environment, is environment B, the registered data of environment B may be used as the registered data used for comparison.
As described above, it is considered that personal authentication can be performed with higher accuracy by using the registered data of the environment B, as compared with the case of using the registered data of the environment C, because the difference in the environment is small.

In step S706, the different environment collation judging means 12 performs the same judgment as the judgment shown in the description of FIG. 2, and if the collation result indicates that there is a corresponding person, the person is identified and the processing is performed. If the process has ended and there is no corresponding person, the process proceeds to step S707. In step S707, the environment-specific biometric information registration unit 13 determines whether to register the acquired biometric information based on a user's selection.

If it is determined in step S707 that the user has selected to register, in step S708, the environment-specific biometric information registration means 13 accesses the environment-specific biometric information storage means, and the personal ID is registered by the user. Then, the registration data is stored in the storage location corresponding to the specified environment A, which is the current environment, and the process ends. At the time when the processing is completed, the result of the authentication of rejection of the person has been obtained. If it is determined that the user has selected not to register, the process ends, and when the process ends, the result of the authentication of rejection of the person is obtained.

As described above, the personal authentication apparatus according to the second embodiment of the present invention is the most similar when comparing the registered data of all registered persons with the data of the inputted biometric information. In the authentication to detect the registrant, the use environment is measured, and authentication is performed using the biometric information registration data registered in advance in the same environment as the use environment, so it is easy to obtain features of the same nature at the time of registration and at the time of input, A highly reliable personal authentication device with high authentication accuracy can be realized.

Further, even when the registered data of the user is not stored in the same environment as the use environment or when there is no corresponding person in the collation under the same environment, biometric information registered in advance in a different environment is used. It is possible to identify the user himself by performing authentication.

Next, a personal authentication device according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram showing a basic configuration of a personal authentication device for performing environment measurement in fingerprint authentication according to the third embodiment of the present invention.
The fingerprint authentication environment measuring means 15 measures the current humidity using the hygrometer 18. Humidity is divided into, for example, three stages of low, medium, and high, and the position of the measured humidity is determined.

The environment-specific fingerprint information registration means 16 stores the registration data in a storage location corresponding to the humidity level determined by the fingerprint authentication environment measurement means 15 in the environment-specific fingerprint information storage means 19. The environment-specific fingerprint information storage unit 19 stores personal fingerprint information registration data in three stages, for example, humidity: low, humidity: medium, and humidity: high.

The fingerprint information input means 17 acquires fingerprint information from a fingerprint sensor. The configuration of the personal authentication device according to the third embodiment corresponds to the personal authentication device for biometric information 1: 1 authentication corresponding to the environmental change shown in FIG. The fingerprint authentication environment measuring means 15 is used for the environment measuring means 1, the environment-specific fingerprint information registration means 16 is used for the environment-specific biometric information registration means 2, the fingerprint information input means 17 is used for the biometric information input means 3, and the environment-specific fingerprint information storage means 19 is used. Corresponds to the biological information storage means 6 for each environment. The same operation is performed in accordance with the flowchart shown in FIG. 6 showing the flow of processing in the personal authentication device for biometric information 1: 1 authentication corresponding to environmental changes shown in FIG.

Further, it is also possible to correspond to the personal authentication device for biometric information 1: n authentication corresponding to the environmental change shown in FIG. The fingerprint authentication environment measurement means 15 is the environment measurement means 7
The environment-specific fingerprint information registration means 16 corresponds to the environment-specific biometric information registration means 13, the fingerprint information input means 17 corresponds to the biometric information input means 8, and the environment-specific fingerprint information storage means 19 corresponds to the environment-specific biometric information storage means 14, respectively. I do.

As described above, the personal authentication device according to the third embodiment of the present invention uses a fingerprint as biometric information,
Since the humidity is measured using a hygrometer as an environmental measurement device, and authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment, the same properties such as the same sweating of the finger at the time of registration and at the time of input Characteristic can be easily obtained, and a reliable personal authentication device with high authentication accuracy can be realized.

A personal authentication apparatus according to a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram showing a basic configuration of a personal authentication device for performing environment measurement in voiceprint authentication according to a fourth embodiment of the present invention. The voiceprint authentication environment measuring means 20 measures the current background noise using the microphone 23. The measuring method measures the amount of noise around the microphone 23 when no voice is input. The background noise is divided into, for example, three stages of small, medium, and large, and it is determined at which stage the background noise obtained by measurement is located.

The environment-specific voiceprint information registration unit 21 stores the registration data in the storage location corresponding to the background noise level measured by the voiceprint authentication environment measurement unit 20 in the environment-specific voiceprint information storage unit 24. The environment-specific voiceprint information storage means 24
For example, registered data of personal voiceprint information is stored in three stages of noise: small, noise: medium, and noise: large.

The voiceprint information input means 22 acquires voiceprint information from the microphone 23. The configuration of the personal authentication device of the fourth embodiment corresponds to the personal authentication device for biometric information 1: 1 authentication corresponding to the environmental change shown in FIG. The voiceprint authentication environment measurement means 20 is used for the environment measurement means 1, the environment-specific voiceprint information registration means 21 is used for the environment-specific biometric information registration means 2, the voiceprint information input means 22 is used for the biometric information input means 3, and the environment-specific voiceprint information storage means 24 is used. Corresponds to the biological information storage means 6 for each environment. The same operation is performed in accordance with the flowchart shown in FIG. 6 showing the flow of processing in the personal authentication device for biometric information 1: 1 authentication corresponding to environmental changes shown in FIG.

It is also possible to correspond to the personal authentication device for biometric information 1: n authentication corresponding to the environmental change shown in FIG. The voiceprint authentication environment measuring means 20 is the environment measuring means 7
The environment-specific voiceprint information registration means 21 corresponds to the environment-specific biometric information registration means 13, the voiceprint information input means 22 corresponds to the biometric information input means 8, and the environment-specific voiceprint information storage means 24 corresponds to the environment-specific biometric information storage means 14. I do.

As described above, the personal authentication device according to the fourth embodiment of the present invention uses a voiceprint as biometric information,
A microphone is used as an environment measurement device to measure background noise, and authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment, so that the strength of voiceprint amplitude is the same at registration and input It is possible to realize a reliable personal authentication device that can easily obtain characteristics of properties and has high authentication accuracy.

A personal authentication device according to a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a block diagram showing a basic configuration of a personal authentication device for performing environment measurement in face or iris authentication according to a fifth embodiment of the present invention. The face or iris authentication environment measuring means 25 measures the current illuminance by the camera 28. The measurement method may be a method of acquiring an image of a place where authentication is to be performed using the camera 28, and calculating the surrounding illuminance from information such as the average luminance of the image. The illuminance is divided into, for example, three levels of dark, medium, and light, and the level of the illuminance obtained by measurement is determined.

The environment-specific face or iris information registration means 26 stores the registration data in a storage location of the environment-specific face or iris information storage means 29 corresponding to the illumination level measured by the face or iris authentication environment measurement means 25. save. The environment-specific face or iris information storage means 29 includes, for example, lighting: dark, lighting: medium,
Illumination: Registered data of personal face or iris information is stored in three stages of light.

The face or iris information input means 27 is
8 to obtain face or iris information. The configuration of the personal authentication apparatus according to the fifth embodiment corresponds to the personal authentication apparatus for biometric information 1: 1 authentication corresponding to the environmental change shown in FIG. The face or iris authentication environment measuring means 25 is in the environment measuring means 1, the environment-specific face or iris information registering means 26 is in the environment-specific biometric information registering means 2, the face or iris information input means 27 is in the biological information input means 3, and the The different face or iris information storage means 29 corresponds to the environment-specific biological information storage means 6, respectively. The same operation is performed in accordance with the flowchart shown in FIG. 6 showing the flow of processing in the personal authentication device for biometric information 1: 1 authentication corresponding to environmental changes shown in FIG.

Further, it is possible to correspond to the personal authentication device for biometric information 1: n authentication corresponding to the environmental change shown in FIG. The face or iris authentication environment measurement unit 25 is used for the environment measurement unit 7, the environment-specific face or iris information registration unit 26 is used for the environment-specific biometric information registration unit 13, and the face or iris information input unit 27 is used.
Corresponds to the biological information input means 8, and the environment-specific face or iris information storage means 29 corresponds to the environment-specific biological information storage means 14.

As described above, the personal authentication apparatus according to the fifth embodiment of the present invention measures the illuminance by using the face or the iris as the biological information and using the camera as an environment measuring apparatus.
Since authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment, it is easy to obtain features of the same nature, such as faces and contours of facial components, at the time of registration and input, and high reliability of authentication accuracy It is possible to realize a personal authentication device having reliability.

A personal authentication apparatus according to a sixth embodiment of the present invention will be described with reference to the drawings. The personal authentication device according to the present embodiment is different from the personal authentication device shown in FIGS. 1 and 2 in that step S60 described in the flowchart in FIG.
7 or Step S described in the flowchart of FIG.
After 704, the old registration data is updated with new data using the date information of the registration data to prevent a decrease in accuracy due to aging.

FIG. 8 is a flowchart showing the flow of processing for automatically updating registered data. In step S801, the same environment collation determination is made between the person and another person to generate a collation result. In step S802, if the collation result indicates another person, the person is rejected and the process is terminated. If the collation result indicates the person, the process proceeds to step S803.

In step S803, the date of the registered data used at the time of collation is confirmed, and it is determined whether the registered data used at the time of collation is old registered data after a certain period of time. If it is determined that the data is old registration data, the process proceeds to step S804. If it is determined that new registration data has not passed for a certain period, the process ends without performing the update process.

In step S804, the feature quantity extracted from the input information used at the time of collation is replaced with old registered data that has been registered, and updated as new registered data.
Note that these processes may be performed by a registered data updating unit (not shown).

As described above, the personal authentication apparatus according to the sixth embodiment of the present invention automatically updates old registration data with new data by using date information of registration data, so that the personal authentication device can change over time. It is possible to prevent a decrease in accuracy and realize a reliable personal authentication device.

A personal authentication apparatus according to a seventh embodiment of the present invention will be described with reference to the drawings. The personal authentication device according to the present embodiment is different from the personal authentication device shown in FIGS. 1 and 2 in that step S60 described in the flowchart in FIG.
7 or Step S described in the flowchart of FIG.
After 704, update old registration data with new data according to the user's selection using the date information of the registration data,
This is to prevent the accuracy from being deteriorated due to aging.

FIG. 9 is a flowchart showing the flow of the registration data updating process by the user's selection. Step S
In 901, the same environment collation determination is made between the person and another person, and a collation result is generated. In step S902, if the collation result indicates another person, the person is rejected and the process is terminated.
The process proceeds to step S903.

In step S903, the date of the registered data used at the time of collation is confirmed, and it is determined whether the registered data used at the time of collation is old registered data after a certain period of time. If it is determined that the data is old registration data, the process proceeds to step S904. If it is determined that new registration data has not passed for a certain period, the process ends without performing the update process.

In step S904, it is determined whether or not the user indicates whether or not to update, and if it is determined that the user's selection is to select updating, the process proceeds to step S905, in which the user does not update. If it is determined that the selection is made, the process ends without updating. In step S905, the feature amount extracted from the input information used at the time of matching is replaced with old registered data that has been registered, and updated as new registered data.

As described above, the personal authentication apparatus according to the sixth embodiment of the present invention makes it possible to update old registration data with new data by user selection using date information of registration data. In cases where the frequency of rejection by the user is high, the registered data can be updated at the discretion of the user, and the accuracy is prevented from deteriorating due to aging, realizing an easy-to-use and reliable personal authentication device. can do.

[0076]

As described above, according to the present invention, an individual's unique ID is input, and the registered data corresponding to the individual ID is compared with the input biometric data to determine whether the user is an individual or another person. In the authentication to be judged, the usage environment is measured and the authentication is performed using the registered data of the biometric information registered in advance in the same environment as the usage environment. A highly accurate and reliable personal authentication device can be realized.

Further, another invention measures a use environment in authentication for detecting the most similar registrant by comparing registration data of all registered persons with data of inputted biometric information, Since authentication is performed using biometric information registration data registered in advance in the same environment as the usage environment, it is easy to obtain features of the same property at the time of registration and at the time of input, and a reliable personal authentication device with high authentication accuracy is realized. be able to.
Also, even if the registered data of the user is not stored in the same environment as the usage environment, or if there is no corresponding person in the verification under the same environment, authentication is performed using biometric information registration data registered in advance in a different environment. By doing so, it is possible to identify the user himself.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of a personal authentication device for 1: 1 authentication of biometric information corresponding to environmental changes according to a first embodiment of the present invention;

FIG. 2 is a block diagram showing a basic configuration of a personal authentication device for biometric information 1: n authentication corresponding to environmental changes according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a basic configuration of a personal authentication device for performing environment measurement in fingerprint authentication according to a third embodiment of the present invention;

FIG. 4 is a block diagram showing a basic configuration of a personal authentication device that performs environment measurement in voiceprint authentication according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a basic configuration of a personal authentication device that performs environment measurement in face or iris authentication according to a fifth embodiment of the present invention.

FIG. 6 is a flowchart showing the flow of processing in the personal authentication device for 1: 1 authentication of biometric information corresponding to environmental changes according to the first embodiment;

FIG. 7 is a flowchart showing the flow of processing in the personal authentication device for biometric information 1: n authentication corresponding to environmental change according to the second embodiment;

FIG. 8 is a flowchart showing the flow of processing for automatically updating registered data according to the sixth embodiment;

FIG. 9 is a flowchart illustrating a flow of a registration data update process according to a user's selection according to the seventh embodiment;

[Explanation of symbols]

 1, 7 environment measuring means 2, 13 biometric information registering means by environment 3, 8 biometric information input means 4, 9 biometric information collating means in the same environment 5, 10 environment collating and judging means 6, 14 biometric information storing means by environment 11 different Environmental biometric information collation means 12 Different environment collation determination means 15 Fingerprint authentication environment measurement means 16 Fingerprint information registration means by environment 17 Fingerprint information input means 18 Hygrometer 19 Fingerprint information storage means by environment 20 Voiceprint authentication environment measurement means 21 Voiceprint information by environment Registration means 22 Voiceprint information input means 23 Microphone 24 Environment-specific voiceprint information storage means 25 Face or iris authentication environment measurement means 26 Environment-specific face or iris information registration means 27 Face or iris information input means 28 Camera 29 Environment-specific face or iris information storage means

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Katsumasa Onda 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (72) Inventor Yoshito Aoki Tsunashima-Higashi, Kohoku-ku, Yokohama, Kanagawa Prefecture 4-3-1, Matsushita Communication Industrial Co., Ltd. (72) Inventor Misa Sano 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Matsushita Communication Industrial Co., Ltd. Matsushita Communication Industrial Co., Ltd. F-term (reference) 5-1, Tsunashima Higashi 4-chome, Kohoku-ku, Yokohama 5B057 AA20 BA02 CA12 CA16 DA06 DB02 DC01 DC36 5B085 AE25 5D015 AA03

Claims (15)

[Claims] 1. An environment measuring means for measuring an input environment of biological information and determining a stage of the input environment corresponding to one or more stages of an input environment in advance, corresponding to each stage of the input environment. The environment-specific biometric information storage means for storing predetermined biometric information data as biometric information registration data, and storing the biometric information registration data in the environment-specific biometric information storage means in correspondence with the determined input environment stage. An environment-specific biometric information registering means for storing and registering, a biometric information inputting means for inputting biometric information as input biometric information, and a biometric information input means for inputting biometric information and registering the input biometric information corresponding to the input environment stage. Same-body biometric information matching means for performing matching with existing biometric information registration data; and same-environment matching determination for determining whether or not the user is a principal based on the matching result of the same-body biometric information matching means Personal authentication device comprising: 2. The personal authentication apparatus according to claim 1, wherein the biometric information is information on any one of a fingerprint, a voiceprint, a face, and an iris. 3. The personal authentication device uses information about a fingerprint as the biometric information, and the environment measuring means includes:
The personal identification device according to claim 1, wherein humidity measurement is performed using a hygrometer. 4. The personal authentication device uses information about a voiceprint as the biometric information, and the environment measuring means includes:
2. The personal authentication device according to claim 1, wherein background noise is measured using a microphone. 5. The personal authentication apparatus according to claim 1, wherein information about a face or information about an iris is used as the biometric information, and the environment measurement unit measures an illumination condition using a camera. Item 5. The personal authentication device according to Item 1. 6. The personal biometric information registration data, which is biometric information registration data used for verification when the personal authentication device determines that the user is an individual when the personal authentication device determines that the user is an individual. Further provided is a registration data updating means for updating data based on predetermined information including the registration date and time of the same environment biometric information registration data with the data of the input biometric information used for the matching when the person is determined to be the person. 2. The personal authentication device according to claim 1, wherein: 7. The personal authentication apparatus according to claim 6, wherein the registration data updating unit updates the registration when the registration date and time of the same environment biometric information registration data is before a predetermined period. 8. An environment measuring means for measuring an input environment of biometric information and determining a stage of the input environment corresponding to one or more stages of input environments in advance, and inputting biometric information as input biometric information. Biometric information inputting means, environment-specific biometric information storing means for storing predetermined input biometric information data corresponding to each stage of the input environment, and the input biometric information data and the input biometric information input environment. Biometric information matching means for comparing with registered biometric information registration data stored in correspondence with the stages; and the same environment matching determination for determining whether or not the user is the principal based on the matching result of the same environment biometric information matching means Means for comparing the input biometric information data with biometric information registration data stored corresponding to a stage different from the input environment stage of the input biometric information. Matching means, different-environment matching determination means for determining whether or not the user is the principal based on the matching result of the different-environment biometric information matching means, and the data of the input biometric information corresponding to the stage of the measured input environment. A personal authentication apparatus, comprising: an environment-specific biometric information registration unit that records and registers the environment-specific biometric information storage unit. 9. The personal authentication apparatus according to claim 8, wherein the biometric information is information on any one of a fingerprint, a voiceprint, a face, and an iris. 10. The personal authentication according to claim 8, wherein the personal authentication device uses information about a fingerprint as the biometric information, and the environment measurement unit performs humidity measurement using a hygrometer. apparatus. 11. The individual according to claim 8, wherein the personal authentication device uses information about a voiceprint as the biometric information, and the environment measuring unit measures background noise using a microphone. Authentication device. 12. The personal authentication apparatus according to claim 1, wherein the biometric information uses information about a face or information about an iris, and the environment measuring means measures a lighting condition using a camera. Item 8. The personal authentication device according to Item 8. 13. The different-environment biometric information matching unit corresponds to a stage closest to the stage of the input environment determined by the environment measurement unit among the biometric information registration data stored for each stage of the input environment. 9. The personal authentication apparatus according to claim 8, wherein the verification is performed using the biometric information registration data stored. 14. The personal biometric information registration data, which is biometric information registration data used for verification when the personal authentication device is determined to be the user when the personal authentication device determines that the user is the user. Data, based on predetermined information including the registration date and time of the same environment biometric information registration data,
9. The personal authentication apparatus according to claim 8, further comprising a registration data updating unit that updates the data with the input biometric information used for the collation when the person is determined to be a person. 15. The personal authentication apparatus according to claim 14, wherein the registration data updating unit updates the registration when the registration date and time of the environmental biometric information registration data is earlier than a predetermined period.