JPH0784661A - Information processor using electronic lock - Google Patents

Abstract

PURPOSE:To construct an information processor using an electronic lock having a sure information protecting means without increasing the cost of the processor itself by preparing plastic card on which a groove of a certain shape is formed as a 'key' for permitting access to protected information. CONSTITUTION:A card-like 'key' 10 is put on coordinate input devices 1, 2 in the information processor, and when a user traces the groove 11 of the 'key'with a pen 3, the shape of the groove 11 is inputted to the processor as password information and the password information is stored in an SRAM 8. In the case of accessing the protected information, the 'key' 10 is put on the devices 1, 2 again and the user traces the groove 11 with the pen 3, so that the shape of the groove 11 is inputted to the processor and whether the inputted contents match with the shape of the groove for previously stored password information or not is judged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus using an electronic lock which is suitable for an information processing apparatus having an integrated display / input device.

[0002]

2. Description of the Related Art An information processing apparatus having an integrated input display device in which a tablet which is a coordinate input device and a display device are superposed on each other has excellent operability because the input position of information and the display position of information coincide with each other. It is attracting attention as a computer input display system.

In an information processing apparatus having an integrated input / display device, a transparent tablet serving as a coordinate input device is overlaid on an LCD which is a display device, and positional information input by a pen is detected by the tablet, and a built-in device is provided. It is processed by the controller. Also, there is a switch on the pen tip of the pen, and when the pen tip is pressed to apply pressure, this switch turns on (ON),
The switch turns off when the pressure is released and the pressure is no longer applied. Incidentally, as a transparent tablet which is a coordinate input device, an electrostatic coupling method, a resistance film pressure sensitive method or the like is generally used.

An information processing apparatus having such an integrated input display device can provide excellent operability because it is possible to input characters and pictures with a pencil on paper. . It is also possible to input a character code by handwriting character recognition.

By the way, in order to protect the information stored in the information processing apparatus, an information protection function of prohibiting access to the information stored in the information processing apparatus by anyone other than a specific person is also becoming more important. There is.

Conventionally, the following (a)-
The method as shown in (c) was used. (A) Password method A user registers a password in the device and permits access to protected information only when a character string input by handwritten character recognition or the like matches the registered password. (B) Signature recognition method The handwriting pattern of the user's signature is registered in the device, and it is determined whether the handwriting pattern of the user's signature input from the coordinate input device is the same as the registered handwriting pattern. Only when it is determined that they are the same, allow access to protected information. (C) Dedicated hardware method Personal identification information is stored in a magnetic card or the like, and the information is read by dedicated hardware such as a magnetic card reader, and protected only when it matches the pre-registered personal identification information. Allow access to information.

[0007]

The above-mentioned conventional techniques have the following disadvantages. (A) Password method A password may be guessed by or known to others, and is not sufficient as a means for protecting information. (B) Signature recognition method At present, the accuracy of signature recognition is not sufficient, and if the criterion for determining the matching between the registered pattern and the input pattern is strict, the signature written by the employee himself will be slightly different from the registered signature. Therefore, even if the signature written by the user himself is judged to be inconsistent with the registered signature, access to the protected information may not be permitted. On the contrary, if the criteria for matching the registered pattern with the input pattern is loosened, the signature written by another person may be erroneously determined to match the registered signature pattern, and access to the protected information may be permitted. is there. (C) Dedicated hardware system The information processing device requires additional hardware such as a magnetic card reading device, resulting in a significant increase in cost.

The present invention has been made in view of the above circumstances, and in an information processing apparatus having an integrated display / input device, has a reliable information protection means without increasing the cost of the main body device. An object is to provide an information processing device using an electronic lock.

[0009]

An information processing apparatus using an electronic lock according to the present invention includes a coordinate input device, a template into which a certain graphic shape is input via the coordinate input device, and an input from the template. It is verified whether or not the figure shape storage means for storing a certain figure shape and the shape of the figure input via the coordinate input device match the figure shape previously stored in the figure shape storage means. Collating means, and only when the collating means determines that the stored graphic shape and the input graphic shape match.
It is characterized by unlocking and permitting access to protected information. At this time, the template for inputting the graphic shape is composed of, for example, a groove in which the graphic shape is fixedly recorded on a plate-shaped substance, and the graphic shape is input by tracing the groove through a coordinate input device. To do.

[0010]

According to the present invention, for example, in an information processing apparatus having an integrated display / input device, a plastic is used as a "key" for permitting access to protected information stored in the information processing apparatus. Prepare a card with a groove in a certain shape, place the above-mentioned card-shaped "key" on the coordinate input device of the information processing device, and the user traces the groove of the "key" with a pen. Then, the shape of the groove is input to the information processing device as personal identification information, and the personal identification information is stored.

When accessing the protected information, the card-shaped "key" on the coordinate input device is again used.
Then, the user traces the groove of the “key” with a pen to input the shape of the groove into the information processing device, and determines whether or not it matches the shape of the secret information stored in advance. .

Since the personal identification information recorded in the "key" has a shape of an arbitrary groove, it is possible to take a very large number of patterns, and the personal identification information is less likely to be guessed as compared with the password system. There is no possibility that the personal identification information will be known to the person, and therefore the information protection will be ensured. Furthermore, since the password information has the shape of an arbitrary groove provided on the “key” card, the variation of the input pattern is less and the collation is easier than the signature recognition method that collates the free handwritten pattern. No special hardware is required, which increases costs.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, reference numeral 1 is a coordinate input device (transparent tablet) which uses electrostatic coupling as an input system, and is a coordinate detection device for detecting coordinates designated by the pen 3.
Reference numeral 2 is an LCD, and the transparent tablet 1 is overlaid thereon to form an integrated input display device.

Reference numeral 3 is a pen, and the user uses this pen 3
The coordinate data on the tablet 1 is designated via. The pen tip has a switch. A coordinate input control device 4 controls the tablet 1 and the pen 3 to obtain coordinate data of the pen 3 on the tablet 1 and state information of the pen tip switch.

Reference numeral 5 is a display controller, which is a VRAM 6
Is displayed on the LCD 2. Reference numeral 6 is a VRAM, which is a display memory that holds display data to be displayed on the LCD 2 in a bitmap format.

Reference numeral 7 is a ROM, which is a read-only memory that stores various programs and data.
Reference numeral 8 is an SRAM, which is a non-volatile RAM that stores various data and that is backed up by a battery.

Reference numeral 9 is a CPU, which controls the entire apparatus by sequentially executing the programs stored in the ROM 7. Reference numeral 10 is a personal identification card, and here, as an example, a credit card size (about 85 mm × 53 mm)
It is assumed that the card is made of a plastic card having a thickness of about 1 mm.

Reference numeral 11 is a personal identification information groove, and here, as an example, a single groove (slit) having a width of about 3 mm is provided in the personal identification card 11, and it is bent 90 degrees in any left and right directions at several places. There is. The length and bending direction of each straight line portion of this polygonal groove are random,
It is different for each PIN.

2 to 5 are each for explaining the operation of the embodiment of the present invention. FIG. 2 is an operation flow chart at the time of the security code registration processing, and FIG. 3 is an operation flow chart at the security code collation processing. FIG. 4 is a diagram showing the operation of the embodiment of the present invention on the integrated display / input device, and FIG. 5 is a diagram showing the pen movement locus.

The operation of the embodiment of the present invention shown in FIG. 1 will be described in detail below with reference to FIGS. First, the process of registering the personal identification pattern will be described with reference to FIGS.

As shown in FIG. 4, the personal identification information card 10 is placed at an arbitrary position on the tablet 1, and the personal identification information groove 11 is traced from the start point to the end point with the pen 3 (FIG. 2, step 21, FIG. 4).
reference).

Next, the movement locus of the pen 3 is temporarily taken into the SRAM 8 as a coordinate point sequence by the coordinate input device and the coordinate input device (see step 22, FIG. 2 in FIG. 2). Then, the straight line portion is detected from the pen movement locus captured in the SRAM 8, that is, the shape data of the personal identification information groove,
The line in the bending direction of the straight line portion {D1, D2 ………, D2
n} (Di = right or left) and the length of each straight line {L1, L2,
……… Ln + 1} (Li is a positive number) is calculated and stored as the secret information in the SRAM 8 (step 23 in FIG. 2, FIG. 5).
reference). For example, when the pen movement trajectory is in the state shown in FIG. 5, the bending direction row is {right, left, left, right, right,
Right, left, right, right, right}, and the length column of the straight line portion is {11,12,13,14,15,16,17,18,19,110,111}.

Incidentally, in order to extract the straight line portion from the pen movement locus in step 23 of FIG. 2, a general straight line approximation method in image processing technology can be used. This linear approximation method is well known in the art, and is described in detail, for example, on page 80 of the first edition of “Basic Techniques of Image Processing Technology” (written by Hasegawa et al.) Published by Gijutsu Hyoronsha. The description of is omitted.

In the above embodiment, the bending angle is 9
Since it is only 0 degrees, the straight line portion can be extracted relatively easily and accurately. Next, with reference to the flowchart shown in FIG. 3, the identification pattern matching process will be described.

First, before accessing the protected information, at the same time as the registration processing of the above-described password pattern, the password information groove 12 of the password card 11 is traced with the pen 3, and the bending direction row {D1 'of the input pattern. , d2 ', ………, Dm}
(Di '= right or left) and a straight line length column {L1', L2 ', ……
, Lm + 1 ′} (Li ′ = positive number) is calculated (steps 34 to 36 in FIG. 3).

Next, the bending direction strings of the registered personal identification pattern and the input pattern are the same, that is, nm and Di = Di '.
If (i = 1 to n), the process proceeds to step 33 in FIG. 3, otherwise it is determined that the registered password pattern and the input pattern are different, and access to protected information is not permitted (steps 35 and 41 in FIG. 3). ).

Then, the sequence of differences between the corresponding straight line portions of the registered personal identification pattern and the input pattern, that is, {S1, S2 ...
n} (Si = lLi-Li'l) is calculated (step 3 in FIG. 3).
8). Here, all the length differences are equal to or less than a certain value, that is, Si ≦
If K (i = 1 to n), if it is determined that the registered personal identification pattern and the input pattern are the same, access to the protected information is permitted (steps 39 and 40 in FIG. 3). Otherwise, determine that the registered password pattern and the input pattern are different,
Access to protected information is not permitted (steps 39 and 41 in FIG. 3).

In the above-described embodiment of the present invention, the information processing apparatus to be the subject of the invention has been described on the assumption that it is an information processing apparatus having an integrated input display device.
The information protection device of the present invention can be similarly applied to an information processing device including a pen coordinate input device in which the coordinate input device and the display device are not integrated.

The present invention also provides an electronic notebook having an integrated input / display device, or a pen input word processor,
It can be widely applied to the information protection function of various electronic devices such as a pen input personal computer, a pen input terminal, a personal computer having a coordinate input device which is not integrated, and a terminal.

[0030]

As described above, according to the present invention, the following effects can be obtained. (1) Since the password information recorded as the "key" is in the shape of an arbitrary groove, it is possible to take an extremely large number of patterns, and there is less possibility of guessing the password information compared to the password method, and information protection is secure. Therefore, reliable information protection can be performed. (2) Since the personal identification information is in the shape of an arbitrary groove provided on the “key” card, there is no possibility that the personal identification information will be known to another person as in the password system, and the information protection is secured. (3) Since the personal identification information is in the shape of an arbitrary groove provided on the "key" card, there is less variation in the input pattern compared to the signature recognition method that collates free handwritten patterns, and collation is easy and information protection is possible. Certainly. Since the coordinate input device originally provided in the information processing device is used as the coordinate input device for inputting a figure, one “card” such as a plastic card is enough. This eliminates the need for special hardware for information protection and prevents cost increases. (4) Since the figure shape, which is personal identification information, can be input only by tracing the groove provided on the card with a pen, the personal identification information is relatively easy to input.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing a secret pattern registration process for explaining the operation of the above embodiment.

FIG. 3 is a flowchart showing a password pattern matching process for explaining the operation of the above embodiment.

FIG. 4 is a conceptual diagram of the operation on the integrated display / input device for explaining the operation of the above-described embodiment.

FIG. 5 is a diagram showing an example of a movement path of a pen for explaining the operation of the above embodiment.

[Explanation of symbols]

1 ... Transparent tablet, 2 ... LCD, 3 ... Input pen, 4 ...
Coordinate input control device, 5 ... Display control device, 6 ... VRAM,
7 ... ROM, 8 ... SRAM, 9 ... CPU, 10 ... PIN card, 11 ... PIN information groove.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location G06T 7/00

Claims (2)

[Claims] 1. A coordinate input device, a template into which a fixed graphic shape is input via this coordinate input device, a graphic shape storage means for storing a fixed graphic shape input by this template, and coordinate input. And a collating means for verifying whether or not the shape of the graphic input through the device matches the graphic shape previously stored in the graphic shape storing means, and the collating means stores the stored graphic shape. An information processing apparatus using an electronic lock, wherein the lock is released only when it is determined that the input graphic shape and the input graphic shape match, and access to protected information is permitted. 2. A template for inputting a graphic shape is composed of a groove in which the graphic shape is fixedly recorded on a plate-like substance, and the graphic shape is input by tracing this groove via a coordinate input device. An information processing apparatus using the electronic lock according to claim 1.