JP2014027564A - Verification device and electronic signature authentication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a verification device and an electronic signature authentication method which can enhance accuracy of personal authentication using an electronic signature.SOLUTION: A verification device 1 comprises a touch pen 2 and a terminal device 5. The touch pen 2 comprises: a pen inclination sensor 11 which detects an inclination of an axis 2c of the touch pen 2 against a vertical direction; and a pen inclination data generation unit 12 which generates pen inclination data indicating change of the inclination with time during an input period on the basis of the inclination detected by the pen inclination sensor 11. A determination unit 15 included in the terminal device 5 compares reference pen inclination data and pen inclination data to determine whether reference signature data matches signature data.

Description

  The present invention relates to a verification device and an electronic signature authentication method.

  As a technology related to electronic signatures, in which handwritten signature data is input to a terminal device such as a tablet device by handwriting using a touch pen, for example, the signature handwriting entered by the patient on the touch panel of the terminal device is captured as handwriting data, and the captured handwriting data is stored. A technique to be disclosed is disclosed in Patent Document 1. Japanese Patent Application Laid-Open No. 2004-228688 discloses a technique that displays an electronic original to be signed on a terminal device and can perform an electronic signature on the displayed electronic original using a touch pen.

  Opportunities for such electronic signatures are increasing in transactions for goods and the like. In transactions such as goods, for example, handwritten signature data is registered in advance as reference signature data, and the signature data input to the touch panel of the terminal device and the reference signature data when confirming sales / delivery of the goods Collation is performed, and it is determined whether or not to permit sales and delivery according to the collation result. If the entered signature data and the reference signature data match, it can be determined that the electronic signature was made by the person who entered the reference signature data. Since it can be judged that the signature was made by another person, permission is not given.

  In addition, signature data is input when confirming sales / delivery of articles, the input signature data is stored, and the stored signature data is utilized when any problem occurs in the transaction.

JP 2007-148757 A JP 2003-134108 A

  FIGS. 10A, 10B, and 10C are diagrams for explaining a conventional electronic signature verification apparatus. In a conventional verification device, reference handwriting data representing a plurality of symbols 60a to 60d as shown in FIG. 10A is registered in advance as reference signature data, for example. When data representing a plurality of symbols 61a to 61d as shown in FIG. 10B is input as signature data, as shown in FIG. 10C, the symbols 60a to 60d represented by the reference handwriting data and the signature data are The symbols 61a to 61d to be represented do not completely match, and the reference handwriting data and the signature data do not match.

  However, just because the handwriting data does not completely match, it cannot be determined that the electronic signature was made by someone else. It can be judged that it was broken.

  For this reason, a conventional electronic signature verification device has a high possibility that the reference signature data matches the input signature data even when another person imitates the reference handwriting data and performs the electronic signature. The accuracy of the personal authentication for correctly authenticating that the person who has performed is the authenticated person who has input the reference signature data is not high.

  As a technique for improving the accuracy of personal authentication, there is a technique that uses data indicating time change of the touch position of the touch pen on the touch panel from the start of writing of the electronic signature to the end of writing together with handwriting data.

  FIG. 11 is a graph showing temporal changes in the touch position of the touch pen on the touch panel. 11 is the x coordinate, the side perpendicular to the side is the y coordinate, the horizontal axis of the graph of FIG. 11 is the time, the vertical axis is the x coordinate value and the y coordinate value, and the time change of the touch position is the coordinate position. It is shown as a time change. The dotted line 65 indicates the time change of the x coordinate value, and the solid line 66 indicates the time change of the y coordinate value.

  In the technology that uses the temporal change of the contact position, when inputting the reference signature data, it is signed with a stroke order different from the general stroke order, or the reference signature data is data of symbols other than characters that are difficult to predict the stroke order. Etc. can be added to improve the accuracy of personal authentication.

  However, changing the handwriting only at the time of electronic signature is cumbersome for the user, and when the changed stroke order is seen and remembered by another person at the time of signing, the other person imitates the reference signature data and the electronic signature is signed. As a result, the accuracy of personal authentication is reduced.

  An object of the present invention is to provide a collation apparatus and an electronic signature authentication method that can improve the accuracy of personal authentication in an electronic signature.

The present invention comprises a terminal device including a touch pen and a touch panel having a contact surface, and is a collation device that collates pre-registered reference signature data and signature data input by the touch panel using the touch pen,
Touch pen
Pen tilt detection means for detecting the tilt of the axis of the touch pen with respect to the vertical direction;
Based on the inclination detected by the pen inclination detecting means, pen inclination data generating means for generating, as part of the signature data, pen inclination data which is data indicating a temporal change of the inclination during an input period for inputting signature data. When,
Transmitting means for transmitting pen inclination data generated by the pen inclination data generating means to the terminal device,
The terminal device
Receiving means for receiving pen tilt data transmitted by the transmitting means;
Position detecting means for detecting a contact position of the touch pen on the contact surface;
Coordinate data generating means for generating coordinate data as data indicating time change of the contact position during the input period as a part of the signature data based on the contact position detected by the position detection means;
Storage means for preliminarily storing reference pen tilt data serving as a reference for the pen tilt data and reference coordinate data serving as a reference for the coordinate data as reference signature data;
A determination unit that compares the reference pen tilt data with the pen tilt data and compares the reference coordinate data with the coordinate data to determine whether the reference signature data and the signature data match; And a collation apparatus characterized by including.

In the present invention, the terminal device
Terminal inclination detecting means for detecting the inclination of the contact surface with respect to the vertical direction;
Terminal inclination data generating means for generating terminal inclination data, which is data indicating a time change of the inclination during the input period, as part of the signature data based on the inclination detected by the terminal inclination detecting means. ,
The storage means
In addition, as reference signature data, reference terminal inclination data serving as a reference for the terminal inclination data is stored in advance,
Judgment means is
Performing a comparison between the reference pen tilt data and the pen tilt data, a comparison between the reference coordinate data and the coordinate data, and a comparison between the reference terminal tilt data and the terminal tilt data; It is characterized by determining whether or not the signature data matches.

The present invention includes a terminal device including a touch pen and a touch panel having a contact surface, and outputs a reference signature data registered in advance and signature data input by the touch panel using the touch pen to an external display device Because
Touch pen
Pen tilt detection means for detecting the tilt of the axis of the touch pen with respect to the vertical direction;
Based on the inclination detected by the pen inclination detecting means, pen inclination data generating means for generating, as part of the signature data, pen inclination data which is data indicating a temporal change of the inclination during an input period for inputting signature data. When,
Transmitting means for transmitting pen inclination data generated by the pen inclination data generating means to the terminal device,
The terminal device
Receiving means for receiving pen tilt data transmitted by the transmitting means;
Position detecting means for detecting a contact position of the touch pen on the contact surface;
Coordinate data generating means for generating coordinate data as data indicating time change of the contact position during the input period as a part of the signature data based on the contact position detected by the position detection means;
Storage means for preliminarily storing reference pen tilt data serving as a reference for the pen tilt data and reference coordinate data serving as a reference for the coordinate data as reference signature data;
The collation apparatus includes: the reference pen tilt data, the reference coordinate data, the pen tilt data, and an output unit that outputs the coordinate data to an external display device.

In the present invention, the terminal device
Terminal inclination detecting means for detecting the inclination of the contact surface with respect to the vertical direction;
Terminal inclination data generating means for generating terminal inclination data, which is data indicating a time change of the inclination during the input period, as part of the signature data based on the inclination detected by the terminal inclination detecting means. ,
The storage means
In addition, as reference signature data, reference terminal inclination data serving as a reference for the terminal inclination data is stored in advance,
The output means is
The reference pen tilt data, the reference coordinate data, the reference terminal tilt data, the pen tilt data, the coordinate data, and the terminal tilt data are output to an external display device.

Further, the present invention comprises a terminal device including a touch pen and a touch panel having a contact surface, and is a collation device that collates pre-registered reference signature data and signature data input by the touch panel using the touch pen,
Touch pen
A pen contact position detecting means for detecting a contact position with a contact surface in the touch pen;
A pen that generates, as part of the signature data, pen contact position data, which is data indicating a temporal change in the contact position during an input period in which signature data is input, based on the contact position detected by the pen contact position detection unit Contact position data generating means;
Transmitting means for transmitting pen contact position data generated by the pen contact position data generating means to the terminal device,
The terminal device
Receiving means for receiving pen contact position data transmitted by the transmitting means;
Position detecting means for detecting a contact position of the touch pen on the contact surface;
Coordinate data generating means for generating coordinate data as data indicating time change of the contact position during the input period as a part of the signature data based on the contact position detected by the position detection means;
Storage means for preliminarily storing reference pen contact position data serving as a reference for the pen contact position data and reference coordinate data serving as a reference for the coordinate data as reference signature data;
Judgment whether the reference signature data and the signature data match by comparing the reference pen contact position data with the pen contact position data and comparing the reference coordinate data with the coordinate data A verification apparatus comprising: means.

In the present invention, the terminal device
Terminal inclination detecting means for detecting the inclination of the main surface of the terminal device with respect to the vertical direction;
Terminal inclination data generating means for generating terminal inclination data, which is data indicating a time change of the inclination during the input period, as part of the signature data based on the inclination detected by the terminal inclination detecting means. ,
The storage means
In addition, as reference signature data, reference terminal inclination data serving as a reference for the terminal inclination data is stored in advance,
Judgment means is
Comparing the reference pen contact position data with the pen contact position data, comparing the reference coordinate data with the coordinate data, and comparing the reference terminal tilt data with the terminal tilt data; And whether or not the signature data matches.

  According to the present invention, an input person who inputs the signature data to the touch panel using a touch pen using the verification device is an authenticated person who inputs the reference signature data stored in a storage unit in advance. An electronic signature authentication method characterized by authenticating.

  According to the present invention, the verification device includes a terminal device including a touch pen and a touch panel having a contact surface, and compares reference signature data registered in advance with signature data input by the touch panel using the touch pen.

  The touch pen includes a pen tilt detection unit, a pen tilt data generation unit, and a transmission unit. The pen inclination detecting means detects the inclination of the axis of the touch pen with respect to the vertical direction. The pen inclination data generation means uses, as part of the signature data, pen inclination data, which is data indicating a time change of the inclination during an input period for inputting signature data, based on the inclination detected by the pen inclination detection means. Generate. The transmitting unit transmits the pen tilt data generated by the pen tilt data generating unit to the terminal device.

  The terminal device includes a reception unit, a position detection unit, a coordinate data generation unit, a storage unit, and a determination unit. The receiving unit receives the pen tilt data transmitted by the transmitting unit. The position detecting means detects a touch position of the touch pen on the contact surface. The coordinate data generation unit generates coordinate data, which is data indicating a temporal change of the contact position during the input period, as a part of the signature data based on the contact position detected by the position detection unit. The storage means stores in advance reference pen tilt data serving as a reference for the pen tilt data and reference coordinate data serving as a reference for the coordinate data as reference signature data. The determining means compares the reference pen tilt data with the pen tilt data, and compares the reference coordinate data with the coordinate data, and determines whether the reference signature data and the signature data match. To do.

  When someone sees the signature of the person to be authenticated, it is relatively easy to remember the signature handwriting and stroke order, but it is difficult to remember the tilt of the axis of the touch pen when signing. It is more difficult for another person to input the pen tilt data so as to coincide with each other than for the other person to input the coordinate data so as to coincide with the reference coordinate data. Therefore, if the collation apparatus of the present invention as described above uses pen tilt data in addition to coordinate data as signature data, the accuracy of personal authentication can be improved.

  According to the invention, the terminal device includes a terminal inclination detection unit that detects the inclination of the contact surface with respect to the vertical direction, and a time change of the inclination during the input period based on the inclination detected by the terminal inclination detection unit. Terminal tilt data generating means for generating terminal tilt data, which is data indicating the above, as part of the signature data. The storage means further stores in advance reference terminal inclination data serving as a reference for the terminal inclination data as reference signature data. The determination means performs a comparison between the reference pen inclination data and the pen inclination data, a comparison between the reference coordinate data and the coordinate data, and a comparison between the reference terminal inclination data and the terminal inclination data, and the reference It is determined whether or not the signature data matches the signature data.

  When someone sees the signature of the person to be authenticated, it is difficult to remember the inclination of the contact surface of the terminal device at the time of signing, and someone else enters the terminal inclination data so that it matches the reference terminal inclination data It is difficult. Therefore, if the collation apparatus of the present invention as described above using pen tilt data, coordinate data, and terminal tilt data as signature data, the accuracy of personal authentication can be further improved.

  According to the present invention, the verification device includes a terminal device including a touch pen and a touch panel having a contact surface. The reference signature data registered in advance and signature data input by the touch panel using the touch pen are externally displayed. Output to the device.

  The touch pen includes a pen tilt detection unit, a pen tilt data generation unit, and a transmission unit. The pen inclination detecting means detects the inclination of the axis of the touch pen with respect to the vertical direction. The pen inclination data generation means uses, as part of the signature data, pen inclination data, which is data indicating a time change of the inclination during an input period for inputting signature data, based on the inclination detected by the pen inclination detection means. Generate. The transmitting unit transmits the pen tilt data generated by the pen tilt data generating unit to the terminal device.

  The terminal device includes a reception unit, a position detection unit, a coordinate data generation unit, a storage unit, and an output unit. The receiving unit receives the pen tilt data transmitted by the transmitting unit. The position detecting means detects a touch position of the touch pen on the contact surface. The coordinate data generation unit generates coordinate data, which is data indicating a temporal change of the contact position during the input period, as a part of the signature data based on the contact position detected by the position detection unit. The storage means stores in advance reference pen tilt data serving as a reference for the pen tilt data and reference coordinate data serving as a reference for the coordinate data as reference signature data. The output means outputs the reference pen tilt data, the reference coordinate data, the pen tilt data, and the coordinate data to an external display device.

  In the verification device of the present invention, for example, a person who has seen the signature data output from the verification device of the present invention to an external display device determines whether or not the reference signature data and the signature data match.

  When someone sees the signature of the person to be authenticated, it is relatively easy to remember the signature handwriting and stroke order, but it is difficult to remember the tilt of the axis of the touch pen when signing. It is more difficult for another person to input the pen tilt data so as to coincide with each other than for the other person to input the coordinate data so as to coincide with the reference coordinate data. For this reason, the use of the collation device of the present invention that outputs pen tilt data to the external display device in addition to the coordinate data as signature data can improve the accuracy of personal authentication.

  According to the invention, the terminal device includes a terminal inclination detection unit that detects the inclination of the contact surface with respect to the vertical direction, and a time change of the inclination during the input period based on the inclination detected by the terminal inclination detection unit. Terminal tilt data generating means for generating terminal tilt data, which is data indicating the above, as part of the signature data. The storage means further stores in advance reference terminal inclination data serving as a reference for the terminal inclination data as reference signature data. The output means outputs the reference pen tilt data, the reference coordinate data, the reference terminal tilt data, the pen tilt data, the coordinate data, and the terminal tilt data to an external display device.

  When someone sees the signature of the person to be authenticated, it is difficult to remember the inclination of the contact surface of the terminal device at the time of signing, and someone else enters the terminal inclination data so that it matches the reference terminal inclination data It is difficult. Therefore, the accuracy of personal authentication can be further improved by using the collation device of the present invention as described above that outputs pen tilt data, coordinate data, and terminal tilt data as signature data to an external display device.

  According to the invention, the verification device includes a touch pen and a terminal device that includes a touch panel having a contact surface, and compares pre-registered reference signature data with signature data input by the touch panel using the touch pen. .

  The touch pen includes a pen contact position detection unit, a pen contact position data generation unit, and a transmission unit. The pen contact position detection means detects a contact position with the contact surface of the touch pen. The pen contact position data generation unit is configured to convert the pen contact position data, which is data indicating a temporal change of the contact position during an input period in which signature data is input, based on the contact position detected by the pen contact position detection unit. Generate as part of the data. The transmission unit transmits the pen contact position data generated by the pen contact position data generation unit to the terminal device.

  The terminal device includes a reception unit, a position detection unit, a coordinate data generation unit, a storage unit, and a determination unit. The receiving unit receives the pen contact position data transmitted by the transmitting unit. The position detecting means detects a touch position of the touch pen on the contact surface. The coordinate data generation unit generates coordinate data, which is data indicating a temporal change of the contact position during the input period, as a part of the signature data based on the contact position detected by the position detection unit. The storage means stores in advance reference pen contact position data serving as a reference for the pen contact position data and reference coordinate data serving as a reference for the coordinate data as reference signature data. The determination unit compares the reference pen contact position data with the pen contact position data, and compares the reference coordinate data with the coordinate data, and determines whether the reference signature data and the signature data match. Judge.

  When someone sees the signature of the person being authenticated, it is relatively easy to remember the handwriting and stroke order of the signature, but it is difficult to remember the contact position of the touch pen at the time of signing. It is more difficult for another person to input the pen contact position data so as to match the contact position data than when another person inputs the coordinate data so as to match the reference coordinate data. Therefore, if the collation apparatus of the present invention as described above uses pen contact position data in addition to coordinate data as signature data, the accuracy of personal authentication can be improved.

  Further, according to the present invention, the terminal device detects the inclination of the main surface of the terminal device with respect to the vertical direction, and the inclination of the input period based on the inclination detected by the terminal inclination detection unit. Terminal inclination data generation means for generating terminal inclination data, which is data indicating a time change, as a part of the signature data. The storage means further stores in advance reference terminal inclination data serving as a reference for the terminal inclination data as reference signature data. The determination means performs a comparison between the reference pen contact position data and the pen contact position data, a comparison between the reference coordinate data and the coordinate data, and a comparison between the reference terminal inclination data and the terminal inclination data. It is determined whether the reference signature data matches the signature data.

  When someone sees the signature of the person to be authenticated, it is difficult to remember the inclination of the contact surface of the terminal device at the time of signing, and someone else enters the terminal inclination data so that it matches the reference terminal inclination data It is difficult. Therefore, if the collation apparatus of the present invention as described above uses pen contact position data, coordinate data, and terminal tilt data as signature data, the accuracy of personal authentication can be further improved.

  According to the invention, in the electronic signature authentication method, an input person who inputs the signature data to the touch panel using a touch pen using the verification device inputs the reference signature data stored in advance in a storage unit. Authenticate that the person to be authenticated Since the verification device uses data that is difficult for others to see and remember as signature data, the electronic signature authentication method of the present invention can improve the accuracy of personal authentication.

It is a figure which shows the external appearance of the collation apparatus 1 which is the 1st Embodiment of this invention. It is a block diagram which shows the structure of the collation apparatus 1 of this embodiment. It is a graph which shows reference | standard pen inclination time series data and pen inclination time series data. It is a flowchart which shows the control method of the collation apparatus 1 of this embodiment. It is a block diagram which shows the structure of the collation apparatus 25 which is the 2nd Embodiment of this invention. It is a flowchart which shows the control method of the collation apparatus 25 of this embodiment. It is a block diagram which shows the structure of the collation apparatus 30 which is the 3rd Embodiment of this invention. It is a figure which expands and shows the front-end | tip part 2b of the touch pen 2. FIG. It is a figure which shows an example of comparison data. It is a figure for demonstrating the collation method of the conventional electronic signature data. It is a graph which shows the time change of the contact position of a touch panel and a touch pen.

1 and 1st embodiment FIG. 1: is a figure which shows the external appearance of the collation apparatus 1 which is the 1st Embodiment of this invention. FIG. 2 is a block diagram showing a configuration of the collation device 1 of the present embodiment. The collation device 1 collates the reference signature data registered in advance with the signature data input to the collation device 1 (hereinafter referred to as “input signature data”), and the registered reference signature data and the input signature data Is determined to match. The collation device 1 includes an input auxiliary device 2, a display device 3, an input device 4, a terminal time measurement device 8, a coordinate data generation device 9, a terminal reception device (not shown), a terminal transmission device (not shown), A storage device 6, a secondary storage device 7, and a CPU 10 are included. The display device 3, the input device 4, the terminal time measuring device 8, the coordinate data generating device 9, the terminal receiving device, the terminal transmitting device, the main storage device 6, the secondary storage device 7, and the CPU 10 The terminal device 5 is configured.

(Input assist device)
In the present embodiment, the input auxiliary device 2 is a touch pen 2. The touch pen 2 is used to input input signature data to the input device 4. The touch pen 2 includes a touch pen body 2 a for a user to hold the touch pen 2, and a tip 2 b that is provided at one end of the touch pen body 2 a and contacts the input device 4. The shape of the touch pen body 2a is, for example, a columnar shape. The shape of the tip portion 2b is a conical shape that narrows from the connection portion with the touch pen body 2a toward the tip of the touch pen 2, and is formed so that the tip has a certain degree of roundness.

  The touch pen 2 includes a pen inclination sensor 11 that detects the inclination of the axis 2c of the touch pen 2 with respect to the vertical direction, a pen inclination data generation unit 12 that generates pen inclination time series data based on the inclination detected by the pen inclination sensor 11, A pen storage unit 13 that stores pen tilt time series data, a pen transmission unit (not shown) that transmits data and various signals to the terminal device 5 by wireless communication, and data and various signals that are transmitted from the terminal device 5 by wireless communication. A pen receiving unit (not shown) for receiving and a pen time measuring unit 14 are included.

  A pen tilt sensor 11 serving as a pen tilt detecting unit detects the tilt of the touch pen 2 during a period in which input signature data is input (hereinafter also simply referred to as “signature input period”). In the present embodiment, the inclination of the axis 2c of the touch pen 2 with respect to the vertical direction is detected as the inclination of the touch pen 2. The pen tilt sensor 11 detects, for example, an angle between the vertical direction and the axis 2c of the touch pen 2 as the tilt. As the pen tilt sensor 11, a known tilt angle sensor or the like can be used.

  The pen inclination data generation unit 12 which is a pen inclination data generation unit associates data indicating the inclination of the axis 2c of the touch pen 2 detected by the pen inclination sensor 11 with time data indicating the time when the inclination is detected. Then, pen tilt time series data, which is data indicating the temporal change of the tilt of the axis 2c of the touch pen 2 during the signature input period, is generated. The pen time measurement unit 14 can measure the time that has elapsed since the signature input period was started, and the time data is data indicating the elapsed time since the signature input period was started. The pen tilt data generation unit 12 causes the pen storage unit 13 to store the generated pen tilt time series data.

(Display device)
The display device 3 includes a display surface 3a. The display surface 3a has a flat plate shape and is constituted by a transmissive liquid crystal panel having a liquid crystal element. The output of the display device 3 is controlled by the CPU 10, and when a signal is output from the CPU 10, an image is displayed on the entire display surface 3a or a part of the display surface 3a.

(Input device)
The input device 4 which is a position detection means is a touch panel 4. The touch panel 4 is configured by a transparent panel, and various detection methods such as an optical type, a resistance type, a capacitance type, and an ultrasonic type can be used. The touch panel 4 is installed and integrated with the display surface 3a of the display device 3. The touch panel 4 includes an input surface 4a with which the touch pen 2 comes into contact and a coordinate data generation device 9, and detects a position on the input surface 4a with which the touch pen 2 comes into contact as position coordinates. The input surface 4a corresponds to a contact surface.

  The position coordinates detected by the touch panel 4 are the position coordinates when the lower left of the input surface 4a is the origin, and the number of pixels in the x-axis direction is n on the display surface 3a of the display device 3 arranged so as to overlap the touch panel 4. When the number of pixels in the y-axis direction is m, the coordinate position on the right side of the position coordinate of (0, 0) is represented by (1, 0), and the position is shifted as it is shifted by 1 in the x-axis direction. The coordinates are expressed in order as (2, 0), (3, 0) (n-1, 0), (n, 0). In addition, the position coordinate immediately above the position coordinate of (0,0) is represented as (0,1), and the position coordinates are sequentially changed to (0,2), (0,3). .. (0, m-1), (0, m).

  At the same time as data indicating position coordinates is output from the touch panel 4, an image is displayed at a position on the display surface 3a opposite to the position coordinates. This image remains displayed during the signature input period even if the touch position of the touch pen 2 moves. As a result, an image of a diagram showing the locus of the touch position of the touch pen 2 on the input surface 4a is displayed on the display surface 3a, and handwriting such as handwritten characters input to the touch panel 4 by the user using the touch pen 2 is displayed on the display surface 3a. Is displayed.

  Similarly to the pen time measurement unit, the terminal time measurement device 8 measures the time elapsed since the start of the signature input period, and generates time data.

  The coordinate data generation device 9 serving as coordinate data generation means generates coordinate time-series data indicating the time change of the position on the input surface 4a touched by the touch pen 2 during the signature input period. The coordinate data generation device 9 divides data indicating the position coordinates detected by the touch panel 4 into x coordinate value data and y coordinate value data, and the position coordinates are detected for each of the x coordinate value data and the y coordinate value data. Associate with time data. In this way, the x coordinate value time series data indicating the time change of the x coordinate value during the signature input period and the y coordinate value time series data indicating the time change of the y coordinate value during the signature input period are generated. Generate coordinate time-series data. The coordinate data generation device 9 stores the generated coordinate time series data in the main storage device 6.

  The main storage device 6 which is a storage means is constituted by a storage device such as a semiconductor memory device or a hard disk device, and stores a program executed by the CPU 10 and information necessary for executing the program. Information stored in the main storage device 6 is read and written by the CPU 10. The main storage device 6 further stores pen tilt time series data and coordinate time series data. That is, the main storage device 6 stores input signature data.

  The secondary storage device 7 is configured by an independent storage device connected to the terminal device 5. In the secondary storage device 7, reference signature data is stored in advance. The reference signature data includes reference pen tilt time series data that serves as a reference for pen tilt time series data, and reference coordinate time series data that serves as a reference for coordinate time series data. The reference signature data may be registered by the verification device 1 or may be registered by another device.

  The terminal transmission device transmits data and various signals to the pen receiver by wireless communication. The terminal reception device receives data and various signals transmitted from the pen transmission unit.

  The CPU 10 controls the entire verification device 1 based on the input signature data, the program and data stored in the main storage device 6 and the like. The CPU 10 includes a determination unit 15 that compares the reference signature data with the input signature data and determines whether the reference signature data and the input signature data match.

  The determination unit 15, which is a determination unit, acquires input signature data from the main storage device 6 immediately after the end of the signature input period, acquires reference signature data from the secondary storage device 7, and stores reference pen tilt time series data and pen A comparison with the tilt time series data and a comparison between the reference time series coordinate data and the coordinate time series data are made to determine whether the reference signature data and the input signature data match.

  If the reference signature data and the input signature data match, it indicates that the input person of the input signature data is the person to be authenticated who has input the reference signature data. If the reference signature data and the input signature data do not match This indicates that the person who entered the input signature data is a person different from the person to be authenticated who entered the reference signature data.

  The determination unit 15 comprehensively determines the match between the reference signature data and the input signature data from a plurality of determination materials. When the reference signature data and the input signature data match, this includes not only the case where the data completely match, but also the case where these data approximate within a predetermined allowable range.

  FIGS. 3A and 3B are graphs showing reference pen tilt time series data and pen tilt time series data. A dotted line 20 indicates reference pen tilt time series data, and solid lines 23 and 21 indicate pen tilt time series data. FIG. 3A is an example of a case where the determination unit 15 determines that the reference pen tilt time-series data and the pen tilt time-series data match, and FIG. It is an example when it is judged that time series data and pen inclination time series data do not correspond. A determination method performed by the determination unit 15 will be described with reference to FIGS.

  The determination unit 15 compares the difference between the maximum value of the reference pen tilt time series data and the maximum value of the pen tilt time series data, the reference pen tilt time series data, in order to compare the reference pen tilt time series data and the pen tilt time series data. The difference between the minimum value of the series data and the minimum value of the pen tilt time series data, and the cumulative value of the difference between the value of the reference pen tilt time series data and the value of the pen tilt time series data at the same time over the signature input period. Each is calculated, and it is determined whether or not the difference or accumulated value is less than a predetermined threshold.

  When the reference pen tilt time series data and the pen tilt time series data are data as shown in FIG. 3A, the determination unit 15 determines the maximum value 20a of the reference pen tilt time series data and the maximum of the pen tilt time series data. The difference between the value 23a, the difference between the minimum value 20b of the reference pen tilt time series data and the minimum value 23b of the pen tilt time series data, and the value of the reference pen tilt time series data and the pen tilt at the same time over the signature input period Accumulated values of the difference 24 from the time-series data value are calculated, respectively, and it is determined whether or not the difference or accumulated value is less than a predetermined threshold value.

  The difference is likely to decrease as the reference pen tilt time series data and the pen tilt time series data are similar, and the accumulated value decreases as the reference pen tilt time series data and the pen tilt time series data are similar. If the difference and the accumulated value are less than a predetermined threshold, the determination unit 15 determines that the difference between the reference pen tilt time series data and the pen tilt time series data is within an allowable range, and the reference pen tilt time series data and the pen tilt It is determined that the time series data matches. If the difference and the accumulated value are equal to or greater than a predetermined threshold, it is determined that the difference between the reference pen tilt time-series data and the pen tilt time-series data exceeds an allowable range and does not match. In the data shown in FIG. 3A, since the difference and the accumulated value are less than a predetermined threshold value, the determination unit 15 determines that the reference pen tilt time series data and the pen tilt time series data match.

  When the reference pen tilt time series data and the pen tilt time series data are data as shown in FIG. 3B, the determination unit 15 determines the maximum value 20a of the reference pen tilt time series data and the maximum of the pen tilt time series data. The difference between the value 21a, the difference between the minimum value 20b of the reference pen tilt time series data and the minimum value 21b of the pen tilt time series data, and the value of the reference pen tilt time series data and the pen tilt at the same time over the signature input period Accumulated values of the difference 22 from the time-series data values are respectively calculated, and it is determined whether or not the difference or accumulated value is less than a predetermined threshold value. In the data shown in FIG. 3B, since the difference and the accumulated value exceed a predetermined threshold value, the determination unit 15 determines that the reference pen tilt time series data does not match the pen tilt time series data.

  The comparison between the reference coordinate time-series data and the coordinate time-series data is performed in the same manner, and the reference x-coordinate value time-series data and the x-coordinate value time-series data, the reference y-coordinate value time-series data, and the y-coordinate value time-series data, respectively. The difference between the maximum value, the difference between the minimum values, and the accumulated value of the differences are calculated, and using these differences and accumulated values, it is determined whether the reference coordinate time-series data and the coordinate time-series data match.

  Note that the value of the reference coordinate time-series data at the same time and the value of the coordinate time-series data increase at the same rate over the signature input period, or the value of the reference coordinate time-series data at the same time If the value of the coordinate time series data is decreasing at the same rate, the input signature data input person is the person to be authenticated who has input the reference signature data, the input position of the reference signature data, and the input There may be a case where the position where the signature data is input is only shifted up or down. In such a case, the difference between the reference coordinate time-series data and the coordinate time-series data is reduced by a certain ratio over the signature input period, and then the match between the reference signature data and the input signature data is determined. Also good.

  The determination unit 15 includes all of reference pen tilt time series data and pen tilt time series data, reference x coordinate value time series data and x coordinate value time series data, reference y coordinate value time series data, and y coordinate value time series data. If the data match, it is determined that the reference signature data and the input signature data match. Otherwise, it is determined that the reference signature data and the input signature data do not match.

  When another person sees the signature of the person to be authenticated, it is relatively easy to remember the handwriting and stroke order of the signature, but it is difficult to remember the tilt of the axis 2c of the touch pen 2 at the time of signing. It is more difficult for another person to input the pen tilt time series data so as to match the time series data than when another person inputs the coordinate time series data so as to match the reference coordinate time series data. Therefore, if it is the collation apparatus 1 which uses pen inclination time series data and coordinate time series data as input signature data, the accuracy of personal authentication can be improved.

  In another embodiment of the present invention, data indicating the writing pressure at the time of inputting signature data may be further added as a material for determining personal authentication.

  Furthermore, a period in which the difference between the value of the reference pen tilt time series data and the value of the pen tilt time series data at the same time is larger than a predetermined value, and the coordinate value and the coordinate time series data of the reference coordinate time series data at the same time The degree of coincidence with a period in which the difference from the coordinate value is larger than a predetermined value may be added to the determination material for personal authentication.

  When the signer is the same as the person who entered the reference signature data, the difference between the value of the reference pen tilt time series data and the value of the pen tilt time series data at the same time during the signature input period is relatively small When the difference between the coordinate value of the reference coordinate time series data at the same time and the coordinate value of the coordinate time series data is relatively small, it is easy to overlap, and the value of the reference pen tilt time series data and the pen tilt time series data at the same time The period in which the difference between the values is relatively large and the period in which the difference between the coordinate values of the reference coordinate time series data and the coordinate values of the coordinate time series data at the same time are relatively large are likely to overlap.

  Therefore, the difference between the value of the reference pen tilt time-series data and the value of the pen tilt time-series data at the same time, and the difference between the coordinate value of the reference coordinate time-series data and the coordinate value of the coordinate time-series data at the same time The difference between the value of the reference pen tilt time series data and the value of the pen tilt time series data at the same time and the coordinate value of the reference coordinate time series data at the same time for a period in which at least one of them is larger than a predetermined value If the value of the period in which both the difference between the coordinate value and the coordinate value of the coordinate time series data is greater than the predetermined value is greater than the predetermined value, it is determined that the reference signature data and the input signature data match, and the predetermined value Is smaller than the reference signature data, it is determined that the reference signature data does not match the input signature data. Thereby, the accuracy of the personal authentication can be further improved.

  FIGS. 4A and 4B are flowcharts showing a control method of the collation device 1 of the present embodiment. FIG. 4A is a flowchart illustrating a method for controlling the terminal device 5, and FIG. 4B is a flowchart illustrating a method for controlling the touch pen 2. These flowcharts are started when a signature request is generated in the verification apparatus 1, that is, the verification apparatus 1 is in a state where it can acquire input signature data.

  In step S <b> 1, the CPU 10 transmits a request for starting detection of the inclination of the axis 2 c of the touch pen 2 to the touch pen 2 simultaneously with the start of the signature via the terminal transmission device.

  In step S11, the touch pen 2 receives a request to start detection of the tilt of the axis 2c of the touch pen 2 simultaneously with the start of the signature via the pen receiver.

  In step S <b> 12, the touch pen 2 transmits reception confirmation data indicating that the request for starting the detection of the tilt of the axis 2 c of the touch pen 2 has been received to the terminal device 5 through the pen transmission unit simultaneously with the start of the signature.

In step S2, the CPU 10 receives reception confirmation data via the terminal reception device.
In step S <b> 3, the CPU 10 controls the display device 3 so that characters indicating waiting for signature entry are displayed on the display surface 3 a.

  In step S4, the CPU 10 determines whether the signature has been started. When the CPU 10 determines that the touch pen 2 has touched the input surface 4a of the touch panel 4, it determines that the signature has been started. This step is repeated until it is determined that the signature has started. The time when it is determined that the signature is started is the start time of the signature input period, and the terminal time measuring device 8 starts measuring the elapsed time from the start of the signature input period.

  In step S13, the touch pen 2 determines whether the signature has been started. This step is repeated until it is determined that the signature has started. The touch pen 2 determines whether or not the signature is started, for example, based on whether or not the pen receiving unit has received data indicating that the CPU 10 has determined that the signature has started. The time when it is determined that the signature is started is the start time of the signature input period, and the pen time measurement unit 14 starts measuring the elapsed time from the start of the signature input period.

  In step S5, the touch panel 4 starts to detect position coordinates indicating the position where the touch pen 2 is touched on the input surface 4a. The touch panel 4 sequentially outputs the detected position coordinates to the coordinate data generation device 9.

  In step S14, the pen tilt sensor 11 starts detecting the tilt of the axis 2c of the touch pen 2. The pen tilt sensor 11 sequentially outputs the detected tilt of the axis 2 c of the touch pen 2 to the pen tilt data generation unit 12.

  In step S6, the CPU 10 determines whether the signature has been completed. This step is repeated until it is determined that the signature has been completed. For example, when the CPU 10 determines that the button for transmitting the instruction to end the signature to the verification device 1 has been pressed, the CPU 10 determines that the signature has ended. The point in time when it is determined that the signature has ended is the end point of the signature input period, and the pen time measurement unit 14 ends the measurement of the elapsed time.

  In step S15, the touch pen 2 determines whether the signature has been completed. This step is repeated until it is determined that the signature has been completed. For example, the touch pen 2 determines whether the signature has been completed based on whether the pen receiver has received data indicating that the CPU 10 has determined that the signature has been completed. The point in time when it is determined that the signature has ended is the end point of the signature input period, and the pen time measurement unit 14 ends the measurement of the elapsed time.

  In step S7, the touch panel 4 ends the detection of position coordinates. The coordinate data generation device 9 generates coordinate time series data based on the position coordinates detected by the touch panel 4 and the elapsed time measured by the terminal time measurement device 8. The coordinate data generation device 9 stores the generated coordinate time series data in the main storage device 6.

  In step S <b> 16, the pen tilt sensor 11 ends the detection of the tilt of the axis 2 c of the touch pen 2. The pen tilt data generation unit 12 generates pen tilt time series data based on the tilt of the axis 2 c of the touch pen 2 detected by the pen tilt sensor 11 and the elapsed time measured by the pen time measurement unit 14. The pen tilt data generation unit 12 causes the pen storage unit 13 to store the generated pen tilt time series data.

  In step S <b> 8, the CPU 10 transmits a request for transmitting pen tilt time series data to the terminal device 5 to the touch pen 2 via the terminal transmission device.

  In step S <b> 17, the touch pen 2 receives a request for transmitting pen tilt time-series data to the terminal device 5 via the pen receiver.

  In step S <b> 18, the touch pen 2 transmits pen tilt time series data to the terminal device 5 via the pen transmission unit.

  In step S9, the CPU 10 receives pen tilt time-series data via the terminal reception device. The CPU 10 stores the received pen tilt time series data in the main storage device 6.

  In step S10, the determination unit 15 acquires reference signature data from the secondary storage device 7, acquires pen tilt time series data and coordinate time series data as input signature data from the main storage device 6, and inputs the reference signature data and input data. It is determined whether the signature data matches, and the determination result is output to the display surface 3a. This is the end of this flowchart.

  If the reference signature data and the input signature data match, various transactions are concluded assuming that the person who performed the electronic signature is authenticated as the person to be authenticated. If the reference signature data and the input signature data do not match, an error message is displayed on the display surface 3a, prompting re-input of the signature data.

2. Second Embodiment FIG. 5 is a block diagram showing a configuration of a collation device 25 according to a second embodiment of the present invention. In addition to the pen tilt time series data and the coordinate time series data, the collation device 25 according to the present embodiment includes data indicating the time change of the tilt of the input surface 4a of the terminal device 5 with respect to the vertical direction in the signature input period. It differs from the verification device 1 of the first embodiment in that it is used.

  The collation device 25 includes a terminal tilt sensor 17 that detects the tilt of the input surface 4 a of the terminal device 5 on the touch panel 4, and a terminal tilt data generation device 16.

  The terminal inclination sensor 17 which is a terminal inclination detection means detects the inclination of the input surface 4a of the terminal device 5 with respect to the vertical direction during the signature input period. The terminal tilt sensor 17 detects the angle of the input surface 4a with respect to the vertical direction as the tilt, for example. As the terminal tilt sensor 17, as with the pen tilt sensor 11, a known tilt angle sensor can be used.

  The terminal inclination data generation device 16 serving as terminal inclination data generation means associates data indicating the inclination of the input surface 4a of the terminal device 5 detected by the terminal inclination sensor 17 with time data indicating the time when the inclination is detected. Thus, terminal tilt time-series data that is data indicating a temporal change in the tilt of the input surface 4a of the terminal device 5 during the signature input period is generated. The time data is generated by the terminal time measuring device 8. The terminal inclination data generation device 16 stores the generated terminal inclination time series data in the main storage device 6.

  In the present embodiment, the secondary storage device 7 stores in advance reference pen tilt time series data, reference coordinate time series data, and reference terminal tilt time series data serving as a reference for terminal tilt time series data as reference signature data. The determination unit 15 compares the reference pen tilt time series data with the pen tilt time series data, compares the reference coordinate time series data with the coordinate time series data, and compares the reference terminal tilt time series data with the terminal tilt time series data. A comparison is made, and if all of these data match, it is determined that the reference signature data and the input signature data match, and if not, it is determined that the reference signature data and the input signature data do not match.

  When another person sees the signature of the person to be authenticated, it is difficult to remember the inclination of the input surface 4a of the terminal device 5 at the time of signing, and when the other person is inclined to match the reference terminal inclination time-series data. It is difficult to input series data. Therefore, if the collation device 25 uses pen tilt time-series data, coordinate time-series data, and terminal tilt time-series data as input signature data, the accuracy of personal authentication can be further improved.

  In another embodiment of the present invention, coordinate time series data and terminal tilt time series data may be used as input signature data.

  FIGS. 6A and 6B are flowcharts showing a control method of the collation device 25 of the present embodiment. FIG. 6A is a flowchart illustrating a method for controlling the terminal device 5, and FIG. 6B is a flowchart illustrating a method for controlling the touch pen 2. These flowcharts are started when a signature request is generated in the verification device 25, that is, when the verification device 25 is in a state where the input signature data can be acquired.

  In step S21, the CPU 10 transmits a request to the touch pen 2 to start detecting the tilt of the axis 2c of the touch pen 2 simultaneously with the start of the signature via the terminal transmission device.

  In step S41, the touch pen 2 receives a request to start detecting the tilt of the axis 2c of the touch pen 2 simultaneously with the start of the signature via the pen receiver.

  In step S <b> 42, the touch pen 2 transmits reception confirmation data indicating that the request for starting the detection of the tilt of the axis 2 c of the touch pen 2 has been received to the terminal device 5 simultaneously with the start of the signature via the pen transmission unit.

  In step S22, the CPU 10 receives the reception confirmation data via the terminal receiving device.

  In step S <b> 23, the CPU 10 controls the display device 3 so that characters indicating waiting for signature entry are displayed on the display surface 3 a.

  In step S24, the CPU 10 determines whether the signature has been started. When the CPU 10 determines that the touch pen 2 has touched the input surface 4a of the touch panel 4, it determines that the signature has been started. This step is repeated until it is determined that the signature has started. The time when it is determined that the signature is started is the start time of the signature input period, and the terminal time measuring device 8 starts measuring the elapsed time from the start of the signature input period.

  In step S43, the touch pen 2 determines whether the signature has been started. This step is repeated until it is determined that the signature has started. The touch pen 2 determines whether or not the signature is started, for example, based on whether or not the pen receiving unit has received data indicating that the CPU 10 has determined that the signature has started. The time when it is determined that the signature is started is the start time of the signature input period, and the pen time measurement unit 14 starts measuring the elapsed time from the start of the signature input period.

  In step S <b> 25, the touch panel 4 starts to detect position coordinates indicating the position where the touch pen 2 is touched on the input surface 4 a. The touch panel 4 sequentially outputs the detected position coordinates to the coordinate data generation device 9.

  In step S26, the terminal tilt sensor 17 starts detecting the tilt of the input surface 4a of the terminal device 5 with respect to the vertical direction. The terminal tilt sensor 17 sequentially outputs the detected tilt to the terminal tilt data generation device 16.

  In step S44, the pen tilt sensor 11 starts detecting the tilt of the axis 2c of the touch pen 2. The pen tilt sensor 11 sequentially outputs the detected tilt of the axis 2 c of the touch pen 2 to the pen tilt data generation unit 12.

  In step S27, the CPU 10 determines whether the signature has been completed. This step is repeated until it is determined that the signature has been completed. For example, when the CPU 10 determines that the button for transmitting the instruction to end the signature to the verification device 1 has been pressed, the CPU 10 determines that the signature has ended. The point in time when it is determined that the signature has ended is the end point of the signature input period, and the pen time measurement unit 14 ends the measurement of the elapsed time.

  In step S45, the touch pen 2 determines whether the signature has been completed. This step is repeated until it is determined that the signature has been completed. For example, the touch pen 2 determines whether the signature has been completed based on whether the pen receiver has received data indicating that the CPU 10 has determined that the signature has been completed. The point in time when it is determined that the signature has ended is the end point of the signature input period, and the pen time measurement unit 14 ends the measurement of the elapsed time.

  In step S28, the touch panel 4 ends the detection of the position coordinates. The coordinate data generation device 9 generates coordinate time series data based on the position coordinates detected by the touch panel 4 and the elapsed time measured by the terminal time measurement device 8. The coordinate data generation device 9 stores the generated coordinate time series data in the main storage device 6.

  In step S29, the terminal tilt sensor 17 ends the detection of the tilt of the input surface 4a of the terminal device 5 with respect to the vertical direction. The terminal tilt data generating device 16 generates terminal tilt time series data based on the tilt detected by the terminal tilt sensor 17 and the elapsed time measured by the terminal time measuring device 8. The terminal inclination data generation device 16 stores the generated terminal inclination time series data in the main storage device 6.

  In step S46, the pen tilt sensor 11 ends the detection of the tilt of the axis 2c of the touch pen 2. The pen tilt data generation unit 12 generates pen tilt time series data based on the tilt of the axis 2 c of the touch pen 2 detected by the pen tilt sensor 11 and the elapsed time measured by the pen time measurement unit 14. The pen tilt data generation unit 12 causes the pen storage unit 13 to store the generated pen tilt time series data.

  In step S <b> 30, the CPU 10 transmits a request for transmitting pen tilt time series data to the terminal device 5 to the touch pen 2 via the terminal transmission device.

  In step S <b> 47, the touch pen 2 receives a request for transmitting pen tilt time-series data to the terminal device 5 via the pen receiver.

  In step S <b> 48, the touch pen 2 transmits pen tilt time series data to the terminal device 5 via the pen transmission unit.

  In step S31, the CPU 10 receives pen tilt time series data via the terminal reception device. The CPU 10 stores the received pen tilt time series data in the main storage device 6.

  In step S32, the determination unit 15 acquires reference signature data from the secondary storage device 7, and acquires pen tilt time series data, coordinate time series data, and terminal tilt time series data as input signature data from the main storage device 6. Then, it is determined whether the reference signature data matches the input signature data, and the determination result is output to the display surface 3a. This is the end of this flowchart.

  If the reference signature data and the input signature data match, various transactions are concluded assuming that the person who performed the electronic signature is authenticated as the person to be authenticated. If the reference signature data and the input signature data do not match, an error message is displayed on the display surface 3a, prompting re-input of the signature data.

3. Third Embodiment FIG. 7 is a block diagram showing a configuration of a collation device 30 according to a third embodiment of the present invention. The collation device 30 of the present embodiment uses a contact sensor 31 instead of the pen tilt sensor 11 to detect the tilt of the touch pen 2, and as coordinate data, coordinate time-series data and the contact sensor 31 in the signature input period. The second embodiment is the same as the collating apparatus 1 of the first embodiment except that the time point data of pen contact position, which is data indicating the time change of the tilt of the touch pen 2 detected in step 1, is used.

  FIG. 8 is an enlarged view of the distal end portion 2 b of the touch pen 2. The contact sensor 31 which is a pen contact position detection means detects the inclination of the touch pen 2 by detecting the contact position with the input surface 4a of the touch panel 4 in the front-end | tip part 2b. The inclination of the touch pen 2 detected by the contact sensor 31 is the inclination of the touch pen 2 with respect to the input surface 4a. The contact sensor 31 detects data indicating that the touch pen 2 is not tilted when the leading edge 32 of the touch pen 2 is in contact with the input surface 4 a, and the contact position with the input surface 4 a becomes farther from the leading edge 32. Data in which the tilt of the touch pen 2 is increased is detected.

  In another embodiment of the present invention, the pen tilt time series data, the coordinate time series data, and the pen contact position time series data are used as the signature data, and the reference pen tilt time series data, the reference coordinate time series data, and Further, it may be determined whether or not the reference signature data and the input signature data coincide with each other by comparing with the reference pen contact position time series data which is a reference of the pen contact position time series data.

4, 4th Embodiment The collation apparatus which is the 4th Embodiment of this invention is not provided with the determination part 15, and the point which is provided with a comparative image display part instead of not including the determination part 15 of 1st Embodiment. Different from the verification device 1. Whether the reference signature data and the input signature data match is determined by the verification device 1 in the verification device 1 including the determination unit 15, but is determined by a person in the verification device of the present embodiment including the comparison image display unit. To do.

  The comparison image display unit, which is an output unit, generates reference signature data and input signature data based on the reference signature data stored in the secondary storage device 7 and the input signature data stored in the main storage device 6. The comparison data is generated as data that can be compared, and the generated comparison data is output to an external display device. A person makes the determination by looking at the comparison data displayed on the external display device. The person who makes the determination is a person different from the person who inputs the signature data, for example, an employee of the company in which the input person conducts the transaction. The external display device is operated by the person who makes the determination, for example. Personal computer etc. are mentioned.

  FIG. 9 is a diagram illustrating an example of comparison data. The comparison data shown in FIG. 9 includes a graph 51 indicating the reference signature data and a lower graph 52 indicating the input signature data. In the graphs 51 and 52, the horizontal axis indicates the elapsed time from the start of the signature input period, and the vertical axis indicates the x coordinate value, the y coordinate value, and the inclination of the axis 2 c of the touch pen 2.

  The comparative image display unit plots a plurality of x-coordinate value data of the reference x-coordinate value time-series data in correspondence with time data, and connects the plotted x-coordinate value data with a straight line or a curve to obtain a reference x-coordinate value. A dotted line 53a indicating the time series data is created, a plurality of y coordinate value data of the reference y coordinate value time series data is plotted in correspondence with the time data, and the plotted y coordinate value data is connected by a straight line to obtain a reference. A solid line 53b indicating the y coordinate value time-series data is created. Also, a plurality of x coordinate value data of the x coordinate value time series data is plotted in correspondence with the time data, and the plotted x coordinate value data is connected by a straight line to create a dotted line 55a indicating the x coordinate value time series data. Then, a plurality of y coordinate value data of the y coordinate value time series data is plotted in correspondence with the time data, and the plotted y coordinate value data is connected by a straight line to indicate a solid line 55b indicating the y coordinate value time series data. create.

  In the graph 51, the reference x-coordinate value time-series data indicated by the dotted line 53a, the reference y-coordinate value time-series data indicated by the solid line 53b, and the reference pen tilt time-series data indicated by the thick line 54 are the respective time data values. Are overlaid to match. In the graph 52, the x-coordinate value time-series data indicated by the dotted line 55a, the y-coordinate value time-series data indicated by the solid line 55b, and the pen tilt time-series data indicated by the bold line 56 have the same time data values. Are superimposed.

  Such a graph 51 and a graph 52 are displayed side by side so that the minimum value of the time data matches in the horizontal axis direction of the graphs 51 and 52.

  By displaying an image of such comparison data on an external display device, a person who has seen this image can determine whether or not the reference signature data and the input signature data match. In FIG. 9, the shape of the dotted line 53a indicating the reference x-coordinate time series data, the shape of the dotted line 55a indicating the x-coordinate time series data, and the shape of the solid line 53b indicating the reference y-coordinate time series data and the y-coordinate time series data are shown. Although the shape of the solid line 55b shown is similar, the shape of the thick line 54 indicating the reference pen tilt time series data and the shape of the thick line 56 indicating the pen tilt time series data are not similar, so that the reference signature data and the input signature data are Can be determined not to match.

  The accuracy of personal authentication can also be improved by using the collation device as described above.

  In another embodiment of the present invention, the comparison image display unit outputs the reference pen tilt time series data, the reference coordinate time series data, the pen tilt time series data, and the coordinate time series data to an external display device, and displays the external display. It is good also as a structure which an apparatus produces comparison data based on those data, and displays the produced comparison data on an external display apparatus.

  Also in the collation devices 25 and 30 of the second and third embodiments described above, the determination unit 15 can be replaced with a comparative image display unit.

  In the electronic signature authentication method of the present invention, an input person who has input input signature data into the touch panel 4 using a touch pen using any one of the above-described verification apparatuses including the first to fourth embodiments is provided with a reference signature. Since it authenticates that it is the person to be authenticated who entered data, the accuracy of the personal authentication is high.

DESCRIPTION OF SYMBOLS 1 Collation device 2 Input auxiliary device 3 Display device 4 Input device 5 Terminal device 6 Main storage device 7 Secondary storage means 8 Terminal time measuring device 9 Coordinate data generation device 10 CPU

Claims (7)

A verification device comprising a terminal device including a touch pen and a touch panel having a contact surface, and collating reference signature data registered in advance with signature data input by the touch panel using the touch pen,
Touch pen
Pen tilt detection means for detecting the tilt of the axis of the touch pen with respect to the vertical direction;
Based on the inclination detected by the pen inclination detecting means, pen inclination data generating means for generating, as part of the signature data, pen inclination data which is data indicating a temporal change of the inclination during an input period for inputting signature data. When,
Transmitting means for transmitting pen inclination data generated by the pen inclination data generating means to the terminal device,
The terminal device
Receiving means for receiving pen tilt data transmitted by the transmitting means;
Position detecting means for detecting a contact position of the touch pen on the contact surface;
Coordinate data generating means for generating coordinate data as data indicating time change of the contact position during the input period as a part of the signature data based on the contact position detected by the position detection means;
Storage means for preliminarily storing reference pen tilt data serving as a reference for the pen tilt data and reference coordinate data serving as a reference for the coordinate data as reference signature data;
A determination unit that compares the reference pen tilt data with the pen tilt data and compares the reference coordinate data with the coordinate data to determine whether the reference signature data and the signature data match; The collation apparatus characterized by including. The terminal device
Terminal inclination detecting means for detecting the inclination of the contact surface with respect to the vertical direction;
Terminal inclination data generating means for generating terminal inclination data, which is data indicating a time change of the inclination during the input period, as part of the signature data based on the inclination detected by the terminal inclination detecting means. ,
The storage means
In addition, as reference signature data, reference terminal inclination data serving as a reference for the terminal inclination data is stored in advance,
Judgment means is
Performing a comparison between the reference pen tilt data and the pen tilt data, a comparison between the reference coordinate data and the coordinate data, and a comparison between the reference terminal tilt data and the terminal tilt data; The collation apparatus according to claim 1, wherein it is determined whether or not the signature data matches. A verification device that includes a touch pen and a terminal device including a touch panel having a contact surface, and outputs pre-registered reference signature data and signature data input by the touch panel using the touch pen to an external display device,
Touch pen
Pen tilt detection means for detecting the tilt of the axis of the touch pen with respect to the vertical direction;
Based on the inclination detected by the pen inclination detecting means, pen inclination data generating means for generating, as part of the signature data, pen inclination data which is data indicating a temporal change of the inclination during an input period for inputting signature data. When,
Transmitting means for transmitting pen inclination data generated by the pen inclination data generating means to the terminal device,
The terminal device
Receiving means for receiving pen tilt data transmitted by the transmitting means;
Position detecting means for detecting a contact position of the touch pen on the contact surface;
Coordinate data generating means for generating coordinate data as data indicating time change of the contact position during the input period as a part of the signature data based on the contact position detected by the position detection means;
Storage means for preliminarily storing reference pen tilt data serving as a reference for the pen tilt data and reference coordinate data serving as a reference for the coordinate data as reference signature data;
A collation apparatus comprising: the reference pen tilt data, the reference coordinate data, the pen tilt data, and an output means for outputting the coordinate data to an external display device. The terminal device
Terminal inclination detecting means for detecting the inclination of the contact surface with respect to the vertical direction;
Terminal inclination data generating means for generating terminal inclination data, which is data indicating a time change of the inclination during the input period, as part of the signature data based on the inclination detected by the terminal inclination detecting means. ,
The storage means
In addition, as reference signature data, reference terminal inclination data serving as a reference for the terminal inclination data is stored in advance,
The output means is
The collation according to claim 3, wherein the reference pen tilt data, the reference coordinate data, the reference terminal tilt data, the pen tilt data, the coordinate data, and the terminal tilt data are output to an external display device. apparatus. A verification device comprising a terminal device including a touch pen and a touch panel having a contact surface, and collating reference signature data registered in advance with signature data input by the touch panel using the touch pen,
Touch pen
A pen contact position detecting means for detecting a contact position with a contact surface in the touch pen;
A pen that generates, as part of the signature data, pen contact position data, which is data indicating a temporal change in the contact position during an input period in which signature data is input, based on the contact position detected by the pen contact position detection unit Contact position data generating means;
Transmitting means for transmitting pen contact position data generated by the pen contact position data generating means to the terminal device,
The terminal device
Receiving means for receiving pen contact position data transmitted by the transmitting means;
Position detecting means for detecting a contact position of the touch pen on the contact surface;
Coordinate data generating means for generating coordinate data as data indicating time change of the contact position during the input period as a part of the signature data based on the contact position detected by the position detection means;
Storage means for preliminarily storing reference pen contact position data serving as a reference for the pen contact position data and reference coordinate data serving as a reference for the coordinate data as reference signature data;
Judgment whether the reference signature data and the signature data match by comparing the reference pen contact position data with the pen contact position data and comparing the reference coordinate data with the coordinate data And a matching device. The terminal device
Terminal inclination detecting means for detecting the inclination of the main surface of the terminal device with respect to the vertical direction;
Terminal inclination data generating means for generating terminal inclination data, which is data indicating a time change of the inclination during the input period, as part of the signature data based on the inclination detected by the terminal inclination detecting means. ,
The storage means
In addition, as reference signature data, reference terminal inclination data serving as a reference for the terminal inclination data is stored in advance,
Judgment means is
Comparing the reference pen contact position data with the pen contact position data, comparing the reference coordinate data with the coordinate data, and comparing the reference terminal tilt data with the terminal tilt data; The collation apparatus according to claim 5, wherein it is determined whether or not the signature data matches.   The input person who input the signature data into the touch panel using a touch pen using the verification device according to any one of claims 1 to 6 inputs the reference signature data stored in advance in a storage unit. An electronic signature authentication method characterized by authenticating that the person is a person to be authenticated.

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