JP2001134535A - Terminal device and method for actuating terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate input operation for a password without spoiling high safety. SOLUTION: The device is equipped with a stroke password storage part 7 which stores as a stroke password a stroke extracted by a stroke extraction part 6 in password registration mode, a stroke matching decision part 8 which decides whether or not the stroke extracted by the stroke extraction part 6 matches the stroke stored in the stroke password storage part 7 in password input mode, and an actuation control part 9 which performs normal actuating operation without limiting any function when the decision result of the stroke matching decision part 8 indicates matching and function-limited actuating operation while limiting at least some of the functions when the decision result indicates discrepancy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention includes a position input unit for inputting a position, such as a tablet input by an input pen, and a stroke input to the position input unit matches a stored stroke. The present invention relates to a terminal device configured to release the function restriction at the time of activation, and a method of activating the terminal device.

[0002]

2. Description of the Related Art For example, a portable terminal device or the like may be provided with a lock function using a password in order to protect secrets. In such a configuration, a password is registered in advance. Then, when starting the system, the entered password is compared with the registered password. In this comparison, if the input password matches the registered password, the system is started, and if not, the system is not started. As a method of inputting a password, a method such as input using a keyboard, input using a soft keyboard, or the like is adopted.

However, if such a method is applied to a device whose power is frequently turned on and off, such as a portable terminal device, a password must be entered every time the power is turned on. Input operation becomes troublesome.

[0004] Techniques have been developed to solve such an annoying input operation.
There is a technique proposed as 350575. That is, in this technique, a fingerprint is read.
When the read fingerprint matches the fingerprint registered in advance, the system is activated (this is referred to as a first related art).

In the technique proposed in Japanese Patent Application Laid-Open No. Hei 7-200129, an ON / OFF signal indicating whether or not a pen is in contact is output from a tablet. The input password is recognized based on the pen contact time indicated by the ON / OFF signal, and it is determined whether or not the recognized password matches a previously registered password. In other words, a password is input by bringing the pen into contact with the tablet in the same manner as when a Morse code is hit (this is referred to as a second conventional technique).

[0006]

However, when the first prior art is used, the following problems have occurred. That is, in order to enable confirmation by fingerprint,
A fingerprint reader having a complicated structure is required. In addition, since the comparison between the read fingerprint and the registered fingerprint is performed, a complicated verification function is required. As a result, the apparatus becomes complicated, and the price of the apparatus increases significantly.

In the case where the second conventional technique is used, the following problem has occurred. That is, the method of inputting the password is a method of contacting the tablet with the pen so as to hit a Morse code. Therefore, the password will be shown as a combination of the respective times of the 0 or 1 signal obtained within a certain period of time. For this reason, the type of the password is limited within a certain range, so that the security of the lock function using the password is reduced.

The present invention has been made in order to solve the above-mentioned problem, and an object of the present invention is to provide a function when a stroke input to a position input unit such as a tablet matches a previously registered stroke. An object of the present invention is to provide a terminal device capable of simplifying a password input operation without losing high security by performing unrestricted activation.

Another object of the present invention is to provide a terminal device capable of further improving the security of a password by making a determination in consideration of an input position of a stroke in addition to the above object.

Another object of the present invention is to provide a terminal device that can further enhance the security of a password by accepting a password only within a predetermined time after the system is activated.

Another object of the present invention is to provide a terminal device capable of reliably performing a password release by adding a release function using a character password in addition to the above object.

[0012] Another object of the present invention is to perform activation without limiting functions when a stroke input to the position input unit matches a previously registered stroke.
An object of the present invention is to provide a terminal device activation method that can simplify a password input operation without impairing high security.

[0013]

In order to solve the above-mentioned problems, a terminal device according to the present invention comprises: a position detecting unit for detecting an input position input to a position input unit such as a tablet on which input is performed by an input pen; Based on the input position detected by the position detection unit, and applied to a terminal device having a stroke extraction unit that extracts the input stroke,
When in the password registration mode, the stroke extracted by the stroke extraction unit is stored as a stroke password. In the password input mode, the stroke extracted by the stroke extraction unit is stored in the stroke password storage unit. A stroke match determination unit that determines whether the password matches the stroke password stored in the unit; and a normal start operation that does not limit the function when the determination result of the stroke match determination unit indicates a match, and the determination result indicates a mismatch. Sometimes, a configuration is provided that includes a start control unit that performs a function restriction start operation in which at least a part of functions is restricted.

That is, in the registration mode, when a stroke is input to the position input unit, the input stroke is stored as a stroke password in the stroke password storage unit. Then, when the mode is changed to the input mode, it is possible to perform a normal start-up operation that does not limit the functions by simply performing a simple operation of inputting a stroke corresponding to the stroke password to the position input unit. Further, there are many types of shapes of the stroke password.

In addition to the above configuration, the stroke password storage unit stores stroke input position information indicating a stroke input position detected by the position detection unit in a password registration mode. The determination unit is configured to determine whether the stroke input position information detected by the position detection unit matches the stroke input position information stored in the stroke password storage unit when in the password input mode.

That is, the type of the password is the number of types obtained by multiplying the type of the stroke password by the type of the stroke input position information. That is, there are extremely many types of passwords for performing the normal activation operation.

Further, in addition to the above configuration, the stroke matching determination section is configured to perform the determination operation only within a predetermined time after the start of the system operation.

That is, when a person other than the person who has registered the stroke password tries to input a stroke and the input of the stroke is delayed, the normal start-up operation is not performed.

In addition to the above configuration, a character input unit for inputting a character password, a character password storage unit for storing a character password input by the character input unit in a password registration mode, and a password input mode. A password comparing unit that determines whether or not the character password input to the character input unit matches the character password stored in the character password storage unit, wherein the activation control unit includes Even if the determination result indicates a mismatch, the normal startup operation is performed when the comparison result of the password comparison unit indicates a match.

That is, even when the normal starting operation by inputting a stroke does not work, the character input unit
By inputting a character password that matches the character password stored in advance, a normal startup operation is performed.

Further, according to the method of activating a terminal device according to the present invention, a position detecting section for detecting an input position input to a position input section such as a tablet on which input is performed by an input pen, and a position detected by the position detecting section. And a stroke extraction unit that extracts an input stroke based on the input position, and applies a method of activating the terminal device. When the password registration mode is set, the stroke extracted by the stroke extraction unit is used as a stroke. A stroke password storing step for storing as a password, and a stroke matching determining step for determining whether or not the stroke extracted by the stroke extracting unit matches the stroke password stored in the stroke password storing step when in the password input mode. And one stroke A starting control step of performing a normal startup operation that does not limit the function when the determination result of the determination step indicates a match, and performing a function restriction startup operation of limiting at least a part of the functions when the determination result indicates a mismatch. It has a configuration.

That is, in the registration mode, when a stroke is input to the position input unit, the input stroke is stored as a stroke password. Then, when the mode is changed to the input mode, it is possible to perform a normal start-up operation that does not limit the functions by simply performing a simple operation of inputting a stroke corresponding to the stroke password to the position input unit. Further, there are many types of shapes of the stroke password.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described with reference to the drawings.

FIG. 4 is an explanatory view schematically showing the external appearance of the first embodiment of the terminal device according to the present invention, and shows a portable pen input terminal device powered by a battery.

In FIG. 1, a terminal device main body 31 is provided with a display 32 such as an LCD. A tablet (position input unit) 2 for inputting a position using an input pen 34 is provided on the surface of the display 32.

FIG. 1 is a block diagram showing the electrical configuration of the first embodiment. The position detection unit 3 includes an input pen 34
Is a block for detecting an input position input to the tablet 2 as coordinates. Then, the detected coordinates are sent to the stroke detection unit 4, the stroke password storage unit 7, and the stroke coincidence determination unit 8.

The stroke detector 4 determines the position of the input pen 34 from the position when the input pen 34 contacts the tablet 2 and the position when the input pen 34 is separated from the tablet 2.
Is detected, and the stroke extraction unit 6 is notified.

When the stroke extracting unit 6 receives a notice that the stroke has been detected from the stroke detecting unit 4, the position detecting unit 3 guided through the stroke detecting unit 4.
The stroke is extracted based on the output of.

That is, the stroke extracting unit 6 extracts an input stroke by obtaining a trajectory of the input pen 34 moving on the tablet 2 while the input pen 34 is in contact with the tablet 2. Then, the extracted stroke is sent to the password control unit 5 and the stroke match determination unit 8.

When the password control unit 5 is in the password registration mode, the stroke extracted by the stroke extraction unit 6 is stored in the stroke password storage unit 7. At this time, stroke input position information indicating the input position of the stroke detected by the position detection unit 3 (for example, a stroke is input in the upper right portion of the tablet 2 or a stroke is input in the central portion of the tablet 2). , Etc.), as well as information on the input position of the stroke.

In the password registration mode, the stroke password storage unit 7 internally stores a stroke extracted by the stroke extraction unit 6 and guided through the password control unit 5 as a stroke password.
Further, it stores the stroke input position information detected by the position detection unit 3 together.

The stroke password storage unit 7
When the mode is the password input mode, the stored stroke password and the stroke input position information are sent to the stroke match determination unit 8.

When in the password input mode, the stroke matching determination section 8
Is a block for judging whether or not the stroke extracted by (1) matches the stroke password sent from the stroke password storage 7. At this time, it is also determined whether the stroke input position information detected by the position detection unit 3 matches the stroke input position information sent from the stroke password storage unit 7. When both the stroke and the stroke input position information match, an output indicating the match is sent to the activation control unit 9.

The system activation detecting section 11 is a block for detecting system activation. For this reason,
For example, it is always checked whether the power-on key is operated. When it is detected that the power on key has been operated, the stroke coincidence determination unit 8 and the time measurement unit 1
0 indicates that the system has been started.

The time measuring section 10 is a block which starts measuring a predetermined time when the system is started. Then, when the time measurement is completed, the stroke matching determination unit 8 is notified that a predetermined time has elapsed.

The activation control unit 9 includes a stroke matching determination unit 8
When the determination result indicates a match, the block performs a normal startup operation without limiting the function. Further, when the determination result of the stroke match determination unit 8 indicates a mismatch,
A function restriction start operation in which at least a part of functions is restricted is performed.

The position detector 3, the stroke detector 4, the password controller 5, the stroke extractor 6, the stroke coincidence determiner 8, and the start controller 9 are composed of a CPU, a R
CPU that executes a program stored in ROM on hardware including OM, RAM, peripheral circuits, and the like
Block.

FIG. 2 is a flowchart showing the main operation of the first embodiment. The operation of the first embodiment will be described with reference to FIG.

When a stroke is input to the tablet 2 using the input pen 34 (step S1), the position detecting unit 3
Detects a position (input position) where the input pen 34 contacts the tablet 2 at predetermined time intervals. Then, the detected input position is sent to the stroke detection unit 4 (Step S2).

The stroke detector 4 detects a period from when the input pen 34 starts to contact the tablet 2 to when the input pen 34 leaves the tablet 2 based on the input position detected by the position detector 3. . Further, a positional relationship between the input position at which the input pen 34 has started to contact the tablet 2 and the input position when the input pen 34 has left the tablet 2 is determined. Then, it is determined whether or not the operation on the tablet 2 using the input pen 34 is a stroke input based on the detected period and the obtained positional relationship (step S3). If it is not a stroke input, the operation returns from step S4 to step S1 to wait for a stroke input.

When the operation on the tablet 2 using the input pen 34 is a stroke input, the stroke detector 4
Indicates that there has been a stroke input.
Inform For this reason, the stroke extracting unit 6 extracts a stroke based on the data group of the input position guided via the stroke detecting unit 4. After that, the extracted stroke is sent to the password control unit 5 and the stroke match determination unit 8 (step S5). The password control unit 5 that has received the stroke from the stroke extraction unit 6
The mode flag is checked to determine whether the mode is the password registration mode or the password input mode.

The mode flag will be described. The mode flag is a flag that can be set by the user. That is, when the user performs an operation to shift to the registration mode in order to register the stroke password,
The mode flag is set to the registration mode. When the user performs an operation to exit the registration mode, the mode flag is set to the input mode.

Now, it is assumed that the mode flag is set to the registration mode. In this case, the password control unit 5 sends the stroke extracted by the stroke extraction unit 6 to the stroke password storage unit 7. Therefore, the stroke password storage unit 7 internally stores the stroke sent from the password control unit 5 as a stroke password. Further, the stroke input position information detected by the position detection unit 3 is also stored (steps S6 and S7). Then, the process returns to step S1.

Now, it is assumed that the stroke password is stored in the stroke password storage 7. It is also assumed that stroke input position information corresponding to the stroke password is also stored. Further, it is assumed that the mode flag is set to the input mode.

In this case, the operation following step S6 is step S10. Therefore, the stroke password storage unit 7 sends the stroke password and the stroke input position information to the stroke match determination unit 8. The stroke extracting unit 6 sends the extracted stroke to the stroke matching determining unit 8. Further, the position detection unit 3 sends stroke input position information corresponding to the input stroke to the stroke match determination unit 8.

The stroke coincidence determination unit 8, which is provided with the input stroke and stroke input position information corresponding to the stroke, and the stroke password and the stroke input position information corresponding to the stroke password, outputs the output of the time measurement unit 10. After the system is activated, it is checked whether it is within a predetermined time. And
If the predetermined time has elapsed, it is determined that the input stroke is not a stroke for releasing the password.

The operation following this determination operation is, for example,
It is possible to perform a function restriction start operation in which at least a part of the functions is restricted.

On the other hand, if it is within the predetermined time, the operation moves from step S10 to step S11. For this reason, the stroke match determination unit 8 determines whether the stroke sent from the stroke extraction unit 6 matches the stroke password sent from the stroke password storage unit 7. Note that the same principle as that for recognizing a gesture is employed in this determination method.

When it is determined that the stroke sent from the stroke extracting unit 6 matches the stroke password, the stroke matching determining unit 8 determines whether the stroke input position information corresponding to the input stroke and the stroke password storing unit 7 It is determined whether or not the sent stroke input position information matches (step S11).

When the stroke sent from the stroke extraction unit 6 matches the stroke password and the two types of stroke input position information match, the stroke match determination unit 8 returns the determination result indicating the match to the activation control unit 9.
To send to. For this reason, the activation control unit 9 performs a normal activation operation without restricting the functions (step S12). As a result, the pen input terminal device 1 starts operating in a form in which all of the functions provided as the device can be used.

On the other hand, when the stroke sent from the stroke extracting unit 6 does not match the stroke password or when the stroke sent from the stroke extracting unit 6 matches the stroke password, the stroke matching determining unit 8 If the stroke input position information does not match, a determination result indicating mismatch is sent to the activation control unit 9. For this reason, the activation control unit 9 performs a function restriction activation operation in which at least a part of the functions is restricted (step S1).
5).

The above-described function-limited start operation in which at least some of the functions are limited is, for example, a start operation that does not start all of the functions of the apparatus (the power-off function is maintained). Alternatively, it is possible to perform an activation operation or the like that enables only a part of the applications to be activated.

The case where no time limit is set for stroke input has been described.
When a time limit such as 5 seconds is provided and a stroke is not input within this time limit, the stroke input is invalidated both in the registration mode and in the input mode for the subsequently input stroke. Can be added.

From the above, if the user registers the stroke as a password, the criterion for determining whether the stroke input immediately after the start of the system is to be activated normally or to be activated with limited functions is determined. It can be used as a password.

FIG. 3 is a block diagram showing an electric configuration of a second embodiment of the terminal device according to the present invention, and shows a portable pen input terminal device. Note that the same reference numerals as those in FIG. 1 are assigned to blocks having the same configuration as that shown in FIG. 1 and detailed description of the configuration is omitted. The appearance of the second embodiment is the same as the shape shown in FIG.

The pen input terminal device 20 of the second embodiment
Has a configuration in which a character password storage unit 21, a character input unit 22, and a password comparison unit 23 are added to the pen input terminal device 1 of the first embodiment.

More specifically, the character input section 22 is a soft keyboard. That is, the input block 34 is used to input characters to the keyboard displayed on the display device 32 by using the input pen 34.

The character password storage unit 21 is a block for internally storing a character string input to the character input unit 22 as a character password when the password registration mode is set. When the mode is the password input mode, the character password stored therein is sent to the password comparison unit 23.

When the result of the determination by the stroke match determination section 8 indicates a mismatch, the password comparison section 23 determines whether the character password input to the character input section 22 matches the character password sent from the character password storage section 21. It is a block to determine whether or not. Then, the determination result is sent to the activation control unit 9.

This embodiment has the above-described configuration.
Therefore, in the password registration mode, two types of passwords are input. That is, using the input pen 34,
A stroke serving as a password is input to the tablet 2, and the stroke password is stored in the stroke password storage unit 7. Also, by inputting a character password into the character input unit 22, the character password storage unit 2
1 stores the character password. Then, the registration mode is changed to the input mode.

When the input mode is set, the input pen 3
4 is used to input a stroke into the tablet 2. If the stroke input at this time matches the stroke password stored in the stroke password storage unit 7 (including the matching of two types of stroke input position information), the activation control unit 9 performs the same operation as in the first embodiment. The normal start operation is performed.

On the other hand, if for some reason the stroke input to the tablet 2 does not match the stroke password stored in the stroke password storage 7, the character password is input to the character input unit 22.

When a character password is input to the character input unit 22, the password comparison unit 23 compares the character password input to the character input unit 22 with the character password storage unit 21.
Is compared with the character password stored in. And
The comparison result is sent to the activation control unit 9.

When the comparison result sent from password comparison section 23 indicates a match, activation control section 9 performs a normal activation operation. When the comparison result sent from the password comparison unit 23 indicates a mismatch, a function restriction activation operation is performed.

As described above, in the second embodiment, two types of passwords, a stroke password and a character password, are stored. The normal startup operation can be performed by a password. Therefore, the normal startup operation can be reliably performed by the password.

As described above, the tablet 2
Is used as a password for performing activation without restricting the function, thereby simplifying the password input operation. Therefore, since a battery is used as a power source, such as a portable pen input terminal device, the power supply must be turned on and off frequently, and even when the password must be input every time the power is turned on, the password is required. The user does not have to worry about the input operation.

[0067]

According to the present invention, there is provided a terminal device for detecting an input position input to a position input unit such as a tablet on which input is performed by an input pen, and an input position detected by the position detection unit. And a stroke extracting unit that extracts an input stroke, and applies to a terminal device. When the password registration mode is set, the stroke extracted by the stroke extracting unit is
A stroke password storage unit for storing as a stroke password; and a stroke extracted by the stroke extraction unit when in a password input mode.
A stroke matching determination unit that determines whether the stroke password matches the stroke password stored in the stroke password storage unit, and a normal startup operation that does not limit the function when the determination result of the stroke matching determination unit indicates a match. An activation control unit that performs a function restriction activation operation in which at least some of the functions are restricted when a mismatch is indicated is provided. Therefore, it is possible to perform a normal start-up operation that does not limit the functions by simply performing a simple operation of inputting a stroke corresponding to the stroke password to the position input unit. There are many types of stroke shapes. Therefore, the password input operation can be simplified without impairing high security.

The stroke password storage unit stores stroke input position information indicating a stroke input position detected by the position detection unit in the password registration mode. In the input mode, the stroke input position information detected by the position detection unit is determined to match with the stroke input position information stored in the stroke password storage unit.
Therefore, the type of password is the number of types obtained by multiplying the type of the stroke input position information by the type of the shape of the stroke password. That is, since the types of passwords for performing the normal activation operation are extremely large, the security of the passwords can be further improved.

Further, the stroke matching determination section is configured to perform the determination operation only within a predetermined time after the activation of the system operation. Therefore, when a person other than the person who has registered the stroke password attempts to input the stroke and the input of the stroke is delayed, the normal activation operation is not performed, so that the security of the password can be further enhanced.

A character input unit for inputting a character password, a character password storage unit for storing the character password input by the character input unit in the password registration mode, and a character input unit for the password input mode. A password comparing unit that determines whether or not the character password input to the character password matches the character password stored in the character password storage unit.The activation control unit determines that the determination result of the stroke match determination unit does not match. Even when the password is displayed, the normal start operation is performed when the comparison result of the password comparison unit indicates a match. Therefore, even when the normal start operation by inputting the stroke is not successful, the normal start operation is performed by inputting the character password that matches the character password registered in advance, so that the password can be securely released. it can.

Further, in the method of activating a terminal device according to the present invention, a position detecting section for detecting an input position input to a position input section such as a tablet on which input is performed with an input pen, and a position detected by the position detecting section. And a stroke extraction unit that extracts an input stroke based on the input position, and applies a method of activating the terminal device. When the password registration mode is set, the stroke extracted by the stroke extraction unit is used as a stroke. A stroke password storing step for storing as a password, and a stroke matching determining step for determining whether or not the stroke extracted by the stroke extracting unit matches the stroke password stored in the stroke password storing step when in the password input mode. And one stroke A starting control step of performing a normal startup operation that does not limit the functions when the determination result of the determination step indicates a match, and performing a function restriction startup operation of limiting at least a part of the functions when the determination result indicates a mismatch. It has a configuration. Therefore, it is possible to perform a normal start-up operation that does not limit the functions by simply performing a simple operation of inputting a stroke corresponding to the stroke password to the position input unit. Further, there are many types of shapes of the stroke password. Therefore,
The password input operation can be simplified without compromising high security.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a first embodiment of a terminal device according to the present invention.

FIG. 2 is a flowchart showing a main operation of the first embodiment.

FIG. 3 is a block diagram illustrating an electrical configuration of a second embodiment.

FIG. 4 is an explanatory diagram showing an outline of the appearance of the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 pen input terminal device 2 tablet (position input unit) 3 position detection unit 6 stroke extraction unit 7 stroke password storage unit 8 stroke match determination unit 9 activation control unit 20 pen input terminal device 21 character password storage unit 22 character input unit 23 password Comparison unit S7 Stroke password storage step S11 Stroke match determination step S12, S15 Start control step

Claims (5)

[Claims] 1. A position detecting unit for detecting an input position input to a position input unit such as a tablet on which an input with an input pen is performed, and a stroke input based on the input position detected by the position detecting unit. In a terminal device including a stroke extraction unit to be extracted, a stroke password storage unit that stores a stroke extracted by the stroke extraction unit as a stroke password when in a password registration mode; A stroke matching determining unit that determines whether the stroke extracted by the stroke extracting unit matches the stroke password stored in the stroke password storing unit; and a function is not limited when the determination result of the stroke matching determining unit indicates a match. Perform normal startup operation and A terminal device comprising: an activation control unit that performs a function restriction activation operation in which at least a part of functions is restricted when the determination result indicates a mismatch. 2. In a password registration mode, the stroke password storage unit stores stroke input position information indicating a stroke input position detected by the position detection unit. 2. The method according to claim 1, wherein in the input mode, it is determined whether or not the stroke input position information detected by the position detection unit matches the stroke input position information stored in the stroke password storage unit. Terminal device. 3. The terminal device according to claim 1, wherein the stroke match determination unit performs the determination operation only within a predetermined time after the activation of the system operation. 4. A character input unit for inputting a character password, a character password storage unit for storing a character password input by the character input unit in a password registration mode, and a character input unit for a password input mode. A password comparing unit that determines whether the character password input to the character password matches the character password stored in the character password storage unit, wherein the activation control unit determines that the determination result of the stroke match determination unit does not match. The terminal device according to any one of claims 1 to 3, wherein the normal activation operation is performed when the comparison result of the password comparison unit indicates a match, even in the case of indicating. 5. A position detection unit for detecting an input position input to a position input unit such as a tablet on which input is performed by an input pen, and a stroke input based on the input position detected by the position detection unit. In a method for activating a terminal device having a stroke extracting unit to be extracted, a stroke password storing step of storing a stroke extracted by the stroke extracting unit as a stroke password when the mode is a password registration mode; In some cases, a stroke match determination step for determining whether the stroke extracted by the stroke extraction unit matches the stroke password stored in the stroke password storage step; A start control step of performing a normal start operation without restricting functions and, when the determination result indicates a mismatch, performing a function restriction start operation with at least some functions restricted. .