JP3000341B2 - Fingerprint collation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fingerprint collating apparatus for collating a registered fingerprint with an imprinted fingerprint. A file is created by associating the identification number entered at the time of fingerprint registration with the registered fingerprint data, and the registered fingerprint data read from the file based on the identification number entered at the time of fingerprint collation is compared with the imprint fingerprint to confirm the identity. A fingerprint collation device that performs the operation has been put to practical use.
There is a demand for improved operability in such a fingerprint matching device.

[0002]

2. Description of the Related Art A system for controlling access to a room by fingerprint collation is known. In this case, fingerprint registration is performed by using an identification number,
Enter personal information such as name, affiliation, attribute, desired room number, and imprint a fingerprint. Then, when entering the room, a fingerprint is stamped after inputting the identification number into the fingerprint collation device. The fingerprint collation device reads the registered fingerprint data from the file based on the input identification number, collates it with the imprinted fingerprint to verify the identity, and if the identity is obtained, unlocks the electric lock on the door. To enter the room.

[0003]

The identification numbers in various systems are assigned so as not to be duplicated.
For example, one of the fingerprint collation devices in the access control system
If 480 minutes of fingerprints can be registered per device, 32 fingerprint matching devices are installed, that is, if there are 32 rooms, the total number of fingerprints that can be registered is 15360. This 15
Assigning a unique identification number to 360 people would require at least 5 digits. Further, a large-scale entry / exit management system may require an identification number of 6 digits or more.

Therefore, it is necessary to input a five-digit or six-digit identification number to the fingerprint collating device every time the user enters the room.
Even if the time required for fingerprint collation is short, there is a problem that the time required for inputting the identification number becomes long, and the operability is particularly bad for a fingerprint collation device in a room where the frequency of entering and leaving the room is high. An object of the present invention is to improve operability by enabling use of an identification number having a small number of digits.

[0005]

Referring to FIG. 1, the fingerprint collating apparatus according to the present invention includes a fingerprint imprinted by a fingerprint imprinting section 3 and registered fingerprint data corresponding to a regular identification number stored in a file 8. In the fingerprint collating apparatus for collating a local identification number, a local identification number having a smaller number of digits than that of the regular identification number is assigned, and a local ID for storing the local identification number is assigned.
The control unit 2 includes a file 11 and read-out registered fingerprint data corresponding to the local identification number input at the time of fingerprint collation from the fingerprint dictionary file 9 of the file 8 and collates with the imprint fingerprint.

Further, in the local ID file 11 ,
Is valid time information indicating the valid time of the local identification number.
A local identification number is stored in association with the local identification number.

[0007] The control unit 2 also includes a local ID file 11.
, A local identification number that does not overlap with the local identification number registered in, and the registered fingerprint data corresponding to the regular identification number can be made to correspond to the local identification number.

[0008]

FIG. 1 is an explanatory view of an embodiment of the present invention.
1 is a fingerprint collation device, 2 is a control unit, 3 is a fingerprint stamping unit, 4 is a display unit, 5 is a numeric keypad, 6 is a clock unit, 7 is a control output unit,
Reference numeral 8 denotes a file, 9 denotes a fingerprint dictionary file, 10 denotes a personal information file, 11 denotes a local ID file, 12 denotes an interface unit (IF), and 13 denotes a line such as a local area network (LAN) or a public line.

A plurality of fingerprint collating devices 1 are connected by a line 13 and a host device (not shown) is connected to form an entrance / exit management system. In this case, when the identity is obtained by fingerprint collation, an unlock signal is added to the electric lock (not shown) from the control output unit 7, and the electric lock is unlocked so that the user can enter the room. The host device holds personal information including an identification number (hereinafter abbreviated as ID) together with a name, an affiliation, a desired room number, and registered fingerprint data corresponding to the ID. The fingerprint data and the fingerprint data can be downloaded to the file 8 of the fingerprint collation device 1 via the line 13. Such control means are already known.

[0010] In the fingerprint dictionary file 9 of this file 8,
The above-mentioned registered fingerprint data is stored, and personal information is stored in the personal information file 10. The regular ID in the personal information and the registered fingerprint data of the fingerprint dictionary file 9 are stored in a linked state. The corresponding registered fingerprint data can be read out and collated with the imprinted fingerprint. The local ID file 11 stores an ID used for fingerprint registration, that is, a local ID having a smaller number of digits than a regular ID. This local ID is assigned so as not to be duplicated.

FIG. 2 is an explanatory view of a fingerprint stamping section, a numeric keypad, and a display section. A fingerprint stamping section 3 shows a mounting table for a finger, and a CCD camera, a light source for illumination, etc. Is arranged. The display unit 4 includes a liquid crystal display panel or the like, and displays, for example, "Please input ID" as shown in the figure. It is also possible to display the position of the imprinted finger on the fingerprint imprinting section 3 and to guide the user to the correct imprinting position. The ten keys 5 may be provided with function keys other than the illustrated keys.

FIG. 3 is a flowchart of a new registration process. When a fingerprint registration unit of a host device (not shown), a device dedicated to fingerprint registration, or a fingerprint collation device is provided with a fingerprint registration unit, the fingerprint registration unit performs the following steps. Fingerprint registration and local I
D registration is shown. First, input the ID (A
1), it is determined whether or not this ID has already been registered (A
2) If it has been registered, since it is a duplicate ID, the registered ID indicates that it cannot be used (A3), and the process returns to the first step.

If the entered ID is not registered,
The personal information such as affiliation, name, and door number that can be entered is entered (A4), and the personal information including the ID is registered (A5). Next, it is determined whether or not the local ID is set (A6). If the local ID is not set, the process proceeds to the fingerprint registration process (A12). In the case of setting a local ID, a local ID is input (A7), and a door number that can enter is input (A8).
It is determined whether or not it is a registered local ID (A
9) If the registered local ID is a duplicate local ID, the local ID is duplicated, so that the fact is displayed (A10) and the step (A) is performed in order to input another local ID again.
Go to 6).

If it is not a registered local ID,
The entered local ID is registered (A11), and the process proceeds to fingerprint registration processing (A12). This fingerprint registration processing can apply various known means, for example, binarize an image of a stamped fingerprint, extract characteristic points such as branch points, and create fingerprint data, It is used as registered fingerprint data, linked to an ID, and stored in a file. Then, it is determined whether or not to continue the new registration (A13). If the new registration is to be continued, the process proceeds to step (A1), and if the new registration is not to be continued, the process ends.

If the local ID is not assigned “0”, for example, if there are 9 or less applicants, 1
The digits are good. In that case, it is also possible to set the same local ID for a desired room, for example,
If the regular ID is "32145" and a local ID of "3" is set for a plurality of rooms, it is sufficient to input the one-digit local ID and imprint a fingerprint. Will be improved.

As the local ID, "0", "00"
Is not assigned, a two-digit local ID can be assigned to 99 or less applicants. Also, as described above, when the number of registered fingerprint data that can be stored in one fingerprint collation device is up to 480, the local ID
, Three digits are sufficient. Therefore,
When a unique regular ID is assigned to 10,000 or more persons, the regular ID becomes 5 digits or more. By assigning a local ID, the number of digits can be reduced compared to the regular ID. ID input operation at the time of fingerprint collation becomes easy.

FIG. 4 is a flowchart at the time of requesting a local ID. After the ID and fingerprint are already registered, a local ID is set in the fingerprint collation device or the fingerprint registration device, and the valid period of the local ID is set. Indicates the case to be determined. That is, a local ID request is input (B1), and an n-digit regular ID is input (B2). Then, a fingerprint is imprinted (B3), and identity verification is performed by fingerprint collation (B4). If the fingerprint collation result is NG, it is determined whether the input of the regular ID is incorrect or the person is not the regular ID, and the process proceeds to step (B2).

If the fingerprint collation result is OK, an n'-digit local ID in which a valid time is set is issued. In this case, it is assumed that n '<n, and a case where the fingerprint collation apparatus assigns local IDs so as not to be duplicated. Also, the valid time is set in advance on the fingerprint collation apparatus side, such as a method of validating all issued local IDs until the same time, a method of validating within a fixed time after issuing a local ID, and the like. Various effective time setting means can be adopted according to the characteristics of the system.

FIG. 5 is a flow chart when issuing a local ID of less than the maximum number of digits, where n is the number of digits of the regular ID, n 'is the number of digits of the local ID, and m is the maximum number of digits of the local ID. Since it is meaningless to issue a local ID having the number of digits = m, a local ID having the number of digits n> m is issued. First, initialization is performed by setting the number of digits n 'of the local ID to 1 (C1), and it is determined whether or not the number of digits n' of the local ID to be issued is equal to or less than the maximum number of digits m (C2).
If the number n 'of digits of the local ID is not less than the maximum number m, it is determined that the local ID cannot be issued (C3) and the local ID
Issuance processing ends.

If the number of digits n 'of the local ID is less than the maximum number of digits m, it is determined whether or not there is an unused or invalid local ID (C4). The number n ′ is increased by one digit (n ′ ← n ′ + 1), and the process proceeds to step (C2). If it exists, its local ID and effective time are displayed. Then, the valid time of the issued local ID and the regular ID corresponding to the local ID are updated (C7).

For example, in the fingerprint collation apparatus 1 shown in FIG.
Enter the local ID request code from the numeric keypad 5,
Next, when the regular ID is input and the fingerprint is imprinted on the fingerprint imprinting unit 3, the control unit 2 performs the fingerprint collation processing with reference to the file 8, and when the identity is obtained, the local ID file 1 is obtained.
1, a local ID is issued in steps (C1) to (C7) of FIG. The effective time in that case is
It can be set based on the current time by the clock unit 6.
Also, the valid time and the local ID are displayed on the display unit 4,
Confirmation input can be performed using the ten keys 5 or the like.

FIG. 6 is a flowchart of fingerprint collation by inputting a local ID. When an n'-digit local ID is input from the numeric keypad 5 (D1), the control unit 2 sets the local ID.
The valid time information for the input local ID is read with reference to the D file 11, the current time information is read from the clock unit 6, and it is determined whether or not the input local ID is before the valid time (D2).

If the valid time has passed, the display unit 4
To the display such as "Effective time has passed" (D
3), end the process. If the time is within the valid time, the regular ID corresponding to the local ID is displayed on the display unit 4 (D
4). Thus, it is possible to confirm whether or not there is an error in the input of the local ID. Note that this step may be omitted and a fingerprint imprint instruction may be displayed.

Then, when the fingerprint is imprinted on the fingerprint imprinting section 3 (D5), the control section 2 sends the regular I / O corresponding to the local ID.
Since D is identified, the fingerprint I
The registered fingerprint data corresponding to D is read out and collated with the imprinted fingerprint. If the fingerprint collation result is NG, the fact is displayed on the display unit 4 and the processing is terminated. As the confirmation result output (D7), for example, the control output unit 7
Sends an unlock signal for the electric lock.

The present invention is not limited to the above-described embodiments. For example, a valid time can be set in the registration processing of the local ID shown in FIG. Similarly, in the local ID issuance processing shown in FIG.
An arbitrary local ID is input, and the control unit 2 determines whether or not the local ID has already been issued.
The determination result is displayed on the display unit 4 and the input local ID is displayed.
Can be set in the local ID file corresponding to the regular ID, or a re-input operation can be performed.

The registered fingerprint data stored in the fingerprint dictionary file 9 is the same as the registered fingerprint data stored in the personal information file 10.
D is linked, the local ID set in the local ID file is linked with the regular ID, the regular ID is obtained from the input local ID, and the regular ID is obtained.
By reading the registered fingerprint data, fingerprint collation can be performed. However, by directly linking the local ID and the registered fingerprint data, the registered fingerprint data corresponding to the input local ID is read from the fingerprint dictionary file 9. Fingerprint verification can also be performed.

[0027]

As described above, according to the present invention, the normal I
By allocating a local ID having a smaller number of digits as compared with D, input operation at the time of fingerprint collation is simplified, operability is improved, and by setting the valid time of the local ID, the frequency of use is temporarily reduced. the local ID assigned in descending person, after the valid time elapses, since it is possible to assign to others, there is an advantage that it is possible to effectively utilize the small digits local ID.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a fingerprint printing unit, a numeric keypad, and a display unit.

FIG. 3 is a flowchart of a new registration process.

FIG. 4 is a flowchart when a local ID is requested.

FIG. 5 is a flowchart at the time of issuing a local ID having a maximum number of digits or less.

FIG. 6 is a flowchart of fingerprint collation by local ID input.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fingerprint collation device 2 Control part 3 Fingerprint stamp part 4 Display part 5 Numeric keypad 6 Clock part 7 Control output part 8 File 9 Fingerprint dictionary file 10 Personal information file 11 Local ID file 12 Interface part (IF) 13 Line

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06T 7/00

Claims (1)

(57) [Claims] In a fingerprint collating apparatus for collating a fingerprint imprinted by a fingerprint imprinting section with registered fingerprint data corresponding to a regular identification number stored in a file, a local number having a smaller number of digits than the regular identification number is provided. Assigning an identification number, the local identification number and the local identification
A local ID file storing valid time information indicating valid times of the numbers in association with each other, and reading out the registered fingerprint data corresponding to the local identification number inputted at the time of fingerprint collation from the file, and collating with the imprint fingerprint. A fingerprint matching device comprising a control unit.