JP4265922B2 - Fingerprint verification device and verification method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fingerprint collation apparatus having a number input key and a fingerprint reading unit.
[0002]
[Prior art]
In a conventional fingerprint collation apparatus, ID input is performed by operating a numeric keypad, then fingerprint imprinting is performed. It is configured to determine whether the identity verification is OK or NG depending on whether it is NG (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-85995 (paragraph 17, FIG. 1)
[0004]
[Problems to be solved by the invention]
In the conventional fingerprint collation device as described above, since the fingerprint is printed after the ID is input by the numeric keypad operation, the ID number is stolen when seen to be operated by a third party. There is a problem that there is a risk of end.
[0005]
The present invention has been made to solve the above-described problems, and provides a fingerprint collation apparatus that can perform fingerprint collation even with a poor fingerprint state by a simple operation and prevents an ID (identification) number from being stolen. For the purpose.
[0006]
[Means for Solving the Problems]
Fingerprint matching apparatus according to the present invention, when an operation of inputting a group number is made to keys for number input, which reads as group number, extracts a plurality of fingerprint data belonging to the group number, these some fingerprint data if, in comparison with the fingerprint data read by the fingerprint reading unit determines whether there is a pass candidate fingerprint data under a predetermined condition, the candidate fingerprint data by the group collated is determined to be more to determine, when an operation of inputting an identification number for the key is made to read it as an identification number, whether there is identification number matches the identification number read in the identification number corresponding to the candidate fingerprint data It is what I did.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 to 3 are diagrams showing an embodiment of the first to third inventions of the present invention. FIG. 1 is a perspective view of a fingerprint inquiry device, FIG. 2 is an operation flowchart, and FIG. It is.
[0008]
In FIG. 1, a fingerprint reading unit 2 that reads a fingerprint when a user places a finger and a key 3 for inputting an identification (ID) number or a group number are arranged on the front surface of the fingerprint collation apparatus 1. Here, the identification number is a number composed of a combination of numbers “0” to “9”, and is a unique number given to each fingerprint data. The group number is a number given to each group divided into a plurality of groups by classifying the entire fingerprint data, and is herein referred to as alphabets A to I.
[0009]
In the figure, the key 3 is “0”, the identification number “1” and the group number “A” “1 / A”, the identification number “2” and the group number “B” “2 / B”, etc. Ten keys representing “9 / I”, which is also used as the identification number “9” and the group number “I”. The key 4 is a “#” key having a function for determining a number input, and the key 5 is a key having an “*” key having a function for canceling a number input. Further, an OK lamp 6 that displays “OK” and an NG lamp 7 that displays “NG” are arranged.
[0010]
Next, the operation of this embodiment will be described with reference to FIG.
In step S1, the user operates the key 3 to input a group number. That is, the key 3 operated first by the user is read as a group number. In step S2, a plurality of fingerprint data corresponding to the input group number is read out. Here, when the user places his / her finger on the fingerprint reading unit 2, the fingerprint data is read in step S3, the fingerprint data is subjected to image processing in step S4, and the feature data of the fingerprint is calculated and extracted in step S5.
[0011]
In step S6, the plurality of fingerprint data read in step S2 is compared with the fingerprint feature data extracted in step S5 to make a collation determination. Here, if there is only one candidate fingerprint data to be OK, it is determined as OK and the process proceeds to step S11. If there are multiple candidate fingerprint data items that are OK, the process proceeds to step S9. If there is no candidate fingerprint data that is OK, the process proceeds to step S7, where the matching condition is relaxed, and it is determined in step S8 whether the matching condition is the lower limit.
[0012]
If it is determined that the collation condition is not the lower limit, the process returns to step S6, and steps S6, S7, and S8 are repeated to collate again. Even if the collation condition reaches the lower limit by repeating this, candidate fingerprint data that is OK. Is not obtained, the process proceeds to step S11. In step S9, the user operates the key 3 to input the identification number one digit at a time. In step S10, the user determines whether there is candidate fingerprint data that matches the identification number input in step S9. . In step S11, the OK lamp 6 or the NG lamp 7 is turned on depending on the determination result.
[0013]
Next, details of the operations in steps S9 and S10 will be described with reference to FIG.
There are four candidate fingerprint data determined to be OK in step S6, which are candidates A to D, and their identification numbers are shown in FIG. Here, it is assumed that candidate A is a true OK identification number. If the first digit “1” from the top of the key input 3a is input in step S9, the candidate B is rejected because the first digit is “5”. Next, when the second digit “2” from the top is input, the candidate C is rejected because the second digit from the top is “4”.
[0014]
Similarly, when “3” in the third digit from the top is input, candidate D is rejected because the third digit from the top is “7”, and only candidate A remains. Although the 4th and 5th digits from the top have not been input yet, it is determined as OK. Here, steps S1 and S2 constitute fingerprint data reading means, steps S3 to S6 constitute group collation determining means, steps S7 and S8 constitute redetermination means, and steps S9 to S10 constitute identification number judging means.
[0015]
In this way, when there is no candidate data that can be determined to be OK by group matching, the determination condition is relaxed and re-determination is performed. If there are a plurality of candidate data that can be determined to be OK, the identification number is incremented by 1 digit. Since it is determined to be OK when one matching item remains, it is not necessary to input all the identification numbers, and the operation can be simplified. Further, since it is not necessary to input all of them, it is possible to eliminate the possibility that the identification number is stolen by a third party.
[0016]
Embodiment 2. FIG.
FIG. 4 is an explanatory diagram of an identification number input procedure showing one embodiment of the fourth invention of the present invention. 1 and 2 are shared by the second embodiment.
In this embodiment, when the identification number is input in the first embodiment, it is input one digit from the upper digit as shown in FIG. 3, whereas one digit from the lower digit as shown in FIG. Input.
[0017]
That is, if the first digit “5” from the bottom of the key input 3b is input, the candidate B is rejected, and if the second digit “4” is input from the bottom, the candidate C is rejected. When the third digit “3” from the bottom is input, the candidate D is rejected. As a result, only candidate A remains, and the subsequent operation of the key 3 becomes unnecessary, and the same effect as in the first embodiment is obtained.
[0018]
【The invention's effect】
As described above, according to the present invention, a plurality of fingerprint data belonging to the group number input by the key operation is extracted, and it is determined whether or not there are fingerprint data read by the fingerprint reading unit. If it is determined, when an identification number is input by the key operation, it is determined whether there is an identification number that matches the identification number input by the key operation among the identification numbers for the candidate fingerprint data. Even a person with poor fingerprint status can perform fingerprint verification with a simple operation.
[Brief description of the drawings]
FIG. 1 is a perspective view of a fingerprint collation device showing a first embodiment of the present invention.
FIG. 2 is an operation flowchart showing Embodiment 1 of the present invention.
FIG. 3 is a diagram for explaining an identification number input procedure according to the first embodiment of the present invention.
FIG. 4 is an explanatory diagram of an identification number input procedure showing Embodiment 2 of the present invention.
[Explanation of symbols]
1 Fingerprint verification device, 2 Fingerprint reader, 3 keys, 3a, 3b Key input, 6 OK light, 7 NG light.
S1, S2 Fingerprint data reading means, S3-S6 group collation judging means, S7, S8 redetermining means, S9, S10 identification number judging means, AD candidates.

Claims (4)

And a key and a fingerprint reading unit for number input, the operation of inputting a group number is made to the key, which reads as group number, extracts a plurality of fingerprint data belonging to the group number, among these fingerprint data, and group checking means determines whether there is a candidate fingerprint data to pass under certain conditions in comparison with the fingerprint data read by the fingerprint reading unit, the candidate fingerprint data by the group collation If it is determined that plural, the operation of inputting the identification number to the key is performed, reads it as an identification number, the identification number read above in the identification number corresponding to the candidate fingerprint data A fingerprint collation apparatus comprising identification number determination means for determining whether there is a matching identification number. And a key and a fingerprint reading unit for number input, the operation of inputting a group number is made to the key, which reads as group number, the fingerprint data read out a plurality of fingerprint data belonging to the group number Group checking that compares the reading means with the plurality of fingerprint data and the input fingerprint data read by the fingerprint reading unit and determines whether there is candidate fingerprint data that passes under a predetermined condition in the plurality of fingerprint data When there is no candidate fingerprint data that has passed the group determination, the determination means, the re-determination means that determines again by relaxing the predetermined condition and determining whether there is candidate fingerprint data that passes under the relaxed condition, If the candidate fingerprint data of the determination pass there are multiple, when an operation of inputting an identification number to the key is performed, reads it as an identification number, upper Some identification number corresponding to the candidate fingerprint data redetermination pass the fingerprint collation apparatus comprising a determining identification number determining means whether there is an identification number that matches the identification number read above.   When there are a plurality of candidate fingerprint data that have passed the redetermination when the identification number judging means has a plurality of candidate fingerprint data that have passed the redetermination, when the key is operated, it is read as an identification number, 3. The fingerprint collation apparatus according to claim 2, wherein an identification number input by one digit by operation is collated and it is determined that the identification number is acceptable when a matching identification number is generated. When the operation to enter a group number is made to keys for number input, which reads as group number, extracts a plurality of fingerprint data belonging to the group number, in these fingerprint data, a fingerprint reading unit determining whether there is passed to the candidate fingerprint data under a predetermined condition as compared to the fingerprint data read, if the candidate fingerprint data is determined to be more the above steps, identified for the key when an operation of inputting the number is made to read it as an identification number, and a step of determining whether there is an identification number that matches the read identification number in the identification number corresponding to the candidate fingerprint data A fingerprint verification method.

Images