JPH03225406A - Personal identification device - Google Patents

Abstract

PURPOSE:To evade an increase in the load on the operator of information equipment and to preclude misrecognition by comparing and collating detected operation information detected by operation information detecting means with personal operation information which is registered previously, and judging whether or not they coincide with each other. CONSTITUTION:When an operator as a person to be matched the information operates a key entry means 10, the operation information detecting means 13 and 16 detect the personal operation information on, for example, the speed of key operation, a pressure characteristic, etc., accompanying the operation. Then a collating means 18 compares and collates the detected operation information with the personal operation information which is registered previously and when it is judged that both the pieces of information coincide with each other, it is recognized that the operator is the person himself. Consequently, the operator of the information equipment is released from an increase in load due to the complexity of the identification number and the information equipment which never misrecognizes a third party as the person himself or herself can be structured.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a person verification device in an information device.

(Prior Art) As a conventional technology of a personal identification device in an information device, there is a device configured as shown in FIG. 7, for example. In such a device, the operator of the information device, who is the verifier, first operates the keyboard 1 to input a signal to the CPU 3 requesting permission for access. Signals input from the keyboard are input to the CPU 3 through the keyboard interface 2. Upon this input, the CPIJ 3 displays on the CRT 5 via the CRT interface 4 an input request for the operator's identification number in accordance with the person verification program written in the ROM 6. The operator, in accordance with the request,
Operate keyboard 1 again to enter your identification number. CPU3 that read the identification number is RO
The identification number stored inside the M6 is compared with the input identification number, and if they match, it is determined that the operator is the authorized person and access is permitted. In addition, if they do not match, access will not be permitted, and information indicating that they do not match will be displayed on the CRT.
Processing such as displaying on page 5 is performed.

Identification numbers, which are the only object to be verified when using the above-mentioned verification method, are currently becoming more complex due to the increasing level of data confidentiality associated with the generalization of databases, and this trend is becoming more and more complex for operators of information equipment. This is becoming a huge burden.

(Problems to be Solved by the Invention) With conventional identity verification devices, operators of information equipment cannot escape the increased burden associated with the complexity of identification numbers, and they also prevent people other than the person from knowing the identification number. In this case, there was a fundamental problem in that even if the identification number was input by the person in question or someone other than the person in question, the identification number would be determined to be the person in question.

Therefore, this invention relieves the operator of information equipment from the increased burden caused by the complexity of identification numbers, and at the same time allows the operator of information equipment to build an information equipment that does not recognize anyone other than the operator as the operator. The purpose is to provide a verification device.

[Structure of the invention] (Means for solving the problem) In order to solve the above problem, the present invention includes a main input means,
An operation information detection means detects personal operation information of an operator who operates the key input means, and the detected operation information detected by the operation information detection means is compared with pre-registered personal operation information. The gist of the present invention is to include a verification means for determining whether or not the detected operation information and the principal operation information match.

(Function) When the operator who is the verifier operates the key input means, the operation information detection means detects personal operation information associated with the operation, such as the speed of key operation or pressure characteristics. Next, the verification means compares and verifies the detected operation information with the person's operation information registered in advance, and if it is determined that the image information matches, the operator is recognized as the person in question. Therefore, operators of information equipment are relieved from the increased burden caused by the complexity of identification numbers, and at the same time,
It becomes possible to construct an information device that does not recognize anyone other than the user as the user.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 6. The person verification device of this embodiment is configured to detect the operating speed and operating pressure characteristics of key operations as personal operation information of the operator operating the key input means.

In FIG. 1, the same or equivalent devices as those in FIG. 7 are designated by the same reference numerals, and redundant explanation will be omitted.

First, the configuration of the person verification device will be explained using FIG. 1 and FIG. A seat 13 is built-in. In Figure 2, 11 is a frame, 12 is a switch/LS
I board, 14 is a key panel. Keyboard 1 mentioned above
The operation pressure characteristics associated with key operation 0 are the same as that of key operation 1.
The sampling circuit 15 samples the data every time. Reference numeral 16 denotes a timer counter as operation information detection means for detecting operation speed, that is, operation interval time.
A timing pulse output for each key operation is inputted and converted into an operation interval time of key operations.

Reference numeral 17 denotes a correction circuit, and this correction circuit]7 calculates the characteristics peculiar to the keyboard 10 in each terminal by using the correction circuit 17.
This is to correct the data input to the verification circuit, which will be described below, so that it more closely approximates the characteristics unique to the operator. Reference numeral 18 denotes a verification circuit as a verification means, and 19 represents an operator pattern registration device for previously registering operation pressure characteristics and operation interval times (operation speeds) specific to each operator as operator operation information.

Next, the operation of the person verification device configured as described above will be explained.

FIG. 3 is a flowchart of the operating procedure. First, the operator of the information device, who is the verifier, operates the keyboard 10 to input a signal requesting permission for access to the CPU 3 (step 21).

At this time, the CPU 3 first connects the line based on the signal output from the keyboard 10 to enable bidirectional communication. At the same time, the sampling circuit 15 samples the operation pressure characteristics output from the keyboard 10 for each key operation, and the correction circuit 17
to be memorized.

In addition, the timing pulse output for each key operation is input to the timer counter 16 to convert it into the operation interval time of key operations, and this is stored in the correction circuit 171 (5).
Step 22).

After completing these processes, the CPU 3 displays on the CRT 5 a message requesting the operator's ID number (identification number) (step 23). In response to the message, the operator operates the keyboard 10 to input his or her ID number. The CPU 3 reads the ID number and stores the operation pressure characteristics during key input and the operation interval time converted from the timing pulse in the correction circuit 17 in the same manner as in the above-described procedure (step 24).

Next, the CPU 3 determines whether or not the input ID number is registered. If it is registered, the process continues; if it is not registered, it enters another processing routine (step 25). Assuming that the ID number has been registered, the CPU 3 stores in advance the operating pressure characteristics and operation interval time as personal operation information corresponding to the ID number in the ROM.
6 (step 26). Next, based on the terminal number output from the keyboard 10, a correction value corresponding to the same terminal number is read out of the data previously stored in the ROM 6 (step 27).

Then, input the read correction value to the correction circuit 17,
The operation pressure characteristics and operation interval time stored during the previous key input are corrected, and the correction result data is sent to the collation circuit 18.
(Step 28).

The data input to the verification circuit 18 is verified against the data corresponding to the ID number read out in step 26.
As will be described later, a determination is made as to whether or not the person is the real person based on ranking (step 29.30).

FIG. 5 shows how the operating pressure characteristics are corrected by the correction circuit 17. Assuming that there is a correction characteristic of the keyboard 1o as shown in FIG. 3(B) for the input characteristic to the correction circuit 17 as shown in FIG. By applying a simple arithmetic method, corrected output characteristics as shown in FIG. Corrected.

FIG. 4 shows an example of the algorithm of the matching circuit 18. As shown in the same figure (A), the input operation pressure characteristic data that has been supplemented are subjected to (step 31) an absolute pressure comparison for each sampler bond (step 32), and a sealing pressure comparison (step 35). It is divided into two routines. Then, the cumulative error for each sampling point is taken (steps 33 and 36), and it is determined whether the cumulative error is within the allowable value.
The BSC is ranked (step 34.37)
.

FIG. 6 shows the absolute pressure comparison and relative pressure comparison. Now, assuming that the input characteristic data a and the data to be compared (individual operation data) b have the characteristics as shown in the same figure (A), if you pay attention to the arrow points, the same figure (B) shows the state of absolute value comparison, and the same figure (C) shows the state of relative value comparison. In this algorithm, determination is made mainly by focusing on the pressure itself when comparing absolute values, and by focusing on the pattern of operating pressure characteristics when comparing relative values.

On the other hand, as shown in FIG. 4(B), the input corrected timing data (operation interval time data) (step 38) is sequentially averaged (three steps), and the average error is The speed of key input is compared (step 40), and it is determined whether the error is an average error or an allowable value, and at this stage, the keys are ranked as A, B, and C (step 41).

In this way, verification is performed by focusing on the three comparison points of absolute pressure comparison, relative pressure comparison, and timing data comparison, and these are comprehensively compared (steps 42 to 45).
Finally, a five-step determination is made from rank A, which indicates that the person is the real person, to rank E, which indicates that the person is not the real person, and the CPU 3 runs the program to a processing routine for each rank (steps 46 to 50). Figure 4 (A
), if the judgment of whether the cumulative error in the absolute pressure comparison is an allowable value (step 34) is rank A, and the result of the average error judgment in the timing data comparison (step 45) is also rank A, then the total The rank is A rank, and it is recognized that the person is the real person. Also, for example, the judgment in step 34 is rank C, or the judgment in step 34 is rank B.
Even in terms of rank, if the result of the relative pressure comparison (step 42) is C rank or the like, the overall rank is E rank and it is recognized that the person is not the real person.

[Effects of the Invention] As explained above, according to the present invention, there is provided an operation information detection means for detecting personal operation information of an operator who operates a key input means, and a detection information detected by the operation information detection means. Since the system is equipped with a verification means that compares and matches the operation information and the user's operation information registered in advance and determines whether or not the detected operation information and the user's operation information match, if the image information matches by the verification means, If the identification number is determined, the operator is recognized as the principal, which relieves the operator of the information device from the increased burden caused by the complexity of identification numbers, and also allows anyone other than the principal to be identified as the principal. The advantage is that it is possible to build information devices that do not recognize the system.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of the personal identification device according to the present invention, in which Figure 1 is a block diagram showing the overall configuration, Figure 2 is an exploded perspective view showing the configuration of the keyboard, and Figure 3 is an exploded perspective view showing the configuration of the keyboard. 4 is a flowchart showing the processing routine, FIG. 4 is a flowchart showing the algorithm of the matching circuit, FIG. 5 is a characteristic diagram showing how the input characteristics are corrected by the correction circuit, and FIG. 6 is a specific example of matching in the matching circuit. FIG. 7 is a block diagram showing a conventional person verification device. 10: Keyboard (key input means), 13: Pressure sensor sheet (operation information detection means that detects operation pressure), 16: Timer counter (operation information detection means that detects the speed of key operation) 18: Verification circuit (verification Means) 19: Personal pattern registration device.

Claims (1)

[Claims] A key input means, an operation information detection means for detecting personal operation information of an operator operating the key input means, and detected operation information detected by the operation information detection means and pre-registered personal operation information. A person verification device comprising a verification means for comparing and verifying the detected operation information and the person's operation information to determine whether or not the detected operation information and the person's operation information match.