JPS61175865A - Individual identifying device - Google Patents

Abstract

PURPOSE:To improve reliability of decision and enable to prevent improper use by a third person by increasing cipher by making individual identification by collating fingerprints on at least more than two fingers known only by the person himself and in order known only by the person himself. CONSTITUTION:In individual identification utilizing a picture of fingerprints, registration of each finger is made on at least more than two fingers known only by the person himself and in order known only by the person himself corresponding to registration number. At the time of collation, a person to be collated presents inside of fingers in registered order, and collation of fingerprint of each finger is made by a collation and decision device 7. The result of decision of the device 7 is sent to an intermediate result of decision indicating device 11 as an intermediate result of decision signal S4 and displayed. When coincidence is recognized on a finger, materialization of intermediate collation is indicated and next finger is collated. Further, collation is made on all registered fingers, and when conformity is recognized, a final result of decision signal S5 is outputted from the device 7. Thus, reliability of decision is improved and cipher is enhanced to prevent improper use by a third person.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a personal identification device that uses fingerprints of a plurality of fingers to identify an individual.

[Conventional technology]

Personal identification devices have been proposed that use fingerprints to identify people entering places that require a high level of safety, such as nuclear power plants. FIG. 2 shows the configuration of a conventional personal identification device using fingerprints. In FIG. 2, (x)t[lB are the fingers of individuals, (2) is an image input device that takes in the fingerprint of finger (1) as an image, and (8) is the image sent from the image input device (2). This is a feature data extraction device that extracts feature data from all image data. In addition, (4) is an input device that can input a switching signal (S work) that instructs either registration or verification and a registration number signal (8□), and (6) is an input device that can input a switching signal (S work) that instructs either registration or verification. A switch (6) for setting the operation of the register to either the registration state or the verification state stores the feature data extracted in advance by the feature data extraction device (8) at the time of registration in association with the registration number signal (S2). The feature data storage device (7) is the identification feature data (8) extracted by the feature data extraction device +5llC at the time of verification, and the registration stored in the feature data storage device (8) in correspondence with the registration number. This is a comparison/determination device that compares and verifies the characteristic data (9) and outputs a determination result signal (S3).

The personal identification device using a fingerprint configured as described above operates as follows. First, at the time of registration, the person to be registered places one predetermined finger (1) at a predetermined position on the image input device (2) and operates the keys of the input device (4) to input the input device (4). A registration number signal (S2) relating to the registration number of the registrant is inputted through the registrant, and a switching signal (S□) instructing "registration" is inputted. The switch (5) is then set to the registered state. As a result, the image input device (2
) outputs all image data related to the fingerprint of the registrant's finger (1), and from this all image data, the feature data extraction device (
In step 8), feature data is extracted, and this feature data is stored as registered feature data in the feature data storage device (6) in association with the registration number signal (S2). Next, during verification, the person to be verified uses an image input device! (2) Place one predetermined finger (1) at a predetermined position, and input device (4)
A registration number signal (S2) related to the registration number of the person to be verified is inputted via the input device (4) by operating a key or the like, and a switching signal (S) instructing "verification" is inputted.

The switch (6) is then set to the verification state.

As a result, the image input device (2) detects the finger (1) of the person to be verified.
), the feature data extraction device (8) extracts the feature data to be identified, and stores the feature data to be identified (8) and the feature data storage device (6). The registered feature data (9) stored in correspondence with the registration number of the person to be verified are compared and verified by the verification determination device (γ), and a determination result signal (S3) is output.

As mentioned above, the fingerprint of one finger of a certain person is registered in advance by capturing its characteristics, and then the individual is identified by comparing the fingerprint of the person with the registered fingerprint image. be done.

[Problem that the invention seeks to solve]

In consideration of the fact that it is impossible for an individual's feature points and registered data to completely match, conventional personal identification devices such as those described above require that the similarity relationship between the feature point data and the registered data exceeds a certain level. If so, it is configured so that it is assumed to be the person in question, so there is a risk of an error in the determination.0Also,
For example, if a person's finger is cut off and someone else uses that finger, it will be determined that the finger is the person's identity.This invention was made to solve this problem. An individual using fingerprints that can identify a person by comparing the fingerprints of at least two or more fingers in an order known only to the person, thereby improving the reliability of identification. The purpose is to obtain an identification device.

Means for Solving Problem C] The personal identification device according to the present invention is a personal identification device that uses pre-registered fingerprint images to determine the identity of an individual by comparing and collating fingerprints. A characteristic data storage device in which the fingerprints of a plurality of predetermined fingers unique to each individual are registered in a predetermined order unique to each individual, and a verification that compares the fingerprints of the predetermined fingers in the predetermined order to determine the identity of the individual. It is equipped with a determination device and an intermediate determination result display device that displays intermediate determination results for each of the six fingers for six-finger fingerprint verification and provides verification instructions to the person to be verified. It is registered and checked in an order known only to the user.

[Effect]

In this invention, the intermediate judgment result display device indicates the matching status of each finger, indicates whether to move to the next finger or whether to match that finger again, and finishes the matching of multiple fingers. Only then can the identity of an individual be determined.

[Embodiment] Fig. 1 is an overall configuration diagram of an embodiment of the personal identification device according to the present invention, and shows (1) to (9), (S), and (S2).
is exactly the same as or equivalent to the conventional device described above.

In FIG. 1, (S4) is an intermediate judgment result signal for every six fingers output from the matching judgment device ft(γ), and this intermediate judgment result signal (S4) is output from the intermediate judgment result display device (9).
given to. The intermediate determination result display device (9) receives the intermediate determination result signal (S4) and has a function of instructing the person to be verified whether to verify the next finger or to verify the finger currently being verified again. have Further, the feature data storage device η(6) according to this embodiment stores, for each individual, feature data related to the fingerprints of a plurality of predetermined fingers unique to each individual, the number of the fingers, and a predetermined registration order. It is stored in association with the individual's registration number. It is assumed that only the person himself or herself knows the registered fingers and the registration order.

The personal identification device operates as follows. First, the operations during registration of six fingers and operations during verification are the same as those of the conventional device described above. Furthermore, in the above personal identification device,
At the time of registration, each individual registers a predetermined plurality of fingers known only to the individual in a predetermined order known only to the individual in association with the registration number and the number of fingers to be registered. On the other hand, during verification, when the person to be verified presents the pads of six fingers to the image input device 2VC in the registered order, the fingerprints of the six fingers are verified in the verification determination device (7) based on the above operation.

The judgment result of the comparison judgment device R(γ) is an intermediate judgment result signal (S
4) is sent to the intermediate judgment result display device (2) and displayed there. When it is determined that one finger matches, a mechanism for displaying the establishment of intermediate matching displays a match and instructs to move on to matching the next finger;
If it is determined that the fingers do not match, an instruction is given to check the same finger again. All registered fingers are verified in this way, and in the process, 6
The finger matching result is displayed as an intermediate judgment result on the intermediate judgment result display device αυ, and when the judgment result that all fingers match is obtained, the final judgment result signal (S5) is sent from the matching judgment device (γ). is output, and the identity of each individual is determined.

In the above identification method, only the person himself/herself knows the number of fingers whose fingerprints are compared, the type of fingers, and the order in which they are compared, which increases the encryption quality and makes the reliability of determining the identity of an individual extremely high. .

Furthermore, in the above embodiment, multiple fingers are input to one image input device (2) one at a time, but it is configured to include multiple image input devices and input multiple fingers at the same time. You can also do that. In addition, intermediate result judgment display device (2)
It is also possible to display the final judgment result along with the intermediate judgment result. Furthermore, if the intermediate determination result is negative, the display may not be displayed, and the user may be asked to perform an input operation many times for verification until the determination result is determined to be that of the individual's finger.

〔Effect of the invention〕

As explained above, this invention is configured to collate multiple fingers known only to each individual in a predetermined order in a personal identification device that uses fingerprints to determine the identity of an individual. The reliability is improved, the encryption quality is increased, and misuse by a third party can be prevented, and it can be realized at low cost.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a personal identification device showing an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional personal identification device. In the figure, (6) is a feature data storage device, (γ) is a comparison determination device, and (9) is an intermediate determination result display device. In addition, the same symbols in each figure indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A personal identification device that utilizes fingerprint images includes a characteristic data storage device in which the fingerprints of a plurality of predetermined fingers unique to each individual are registered in a predetermined order unique to each individual, and the fingerprints of the predetermined fingers. a verification determination device that determines the identity of an individual by verifying the fingerprints in the predetermined order, and an intermediate determination result display device that displays intermediate determination results for fingerprint verification of each finger and provides verification instructions to the person to be verified. A personal identification device characterized by: (2) The personal identification device according to claim 1, wherein the intermediate determination result display device includes a mechanism for displaying the establishment of intermediate verification when determining intermediate verification for each finger.