KR20090130784A - User authentication method for video processing apparatus with touch input device and video processing apparatus performing the method - Google Patents

Abstract

PURPOSE: A user authentication method of an image processing device having a touch input unit and the image processing device for performing the method are provided to determine user authentication according to a pressure value of an inputted touch except a password, thereby preventing illegal use by the third party. CONSTITUTION: A user's touch is inputted through a touch input unit(S202). Pressure for the inputted touch is measured(S203). A pressure value of the inputted touch is calculated. A password inputted through the touch input unit is compared with a preset password(S206). Based on the compared results and the pressure value of the inputted touch, authentication for a user is determined (S207~S211). If the passwords are equal, the authentication for the user is permitted.

Description

USER AUTHENTICATION METHOD FOR VIDEO PROCESSING APPARATUS WITH TOUCH INPUT DEVICE AND VIDEO PROCESSING APPARATUS PERFORMING THE METHOD}

The present invention relates to user authentication of an image processing apparatus, and more particularly, to a user authentication method of an image processing apparatus having a touch input unit and an image processing apparatus for performing the same.

Recent portable terminal products provide various functions and services to meet the needs of the user. However, when a user uses a key button on a keypad as a user interface device, user convenience may be degraded due to a complicated user interface structure.

In the meantime, due to the recent cost reduction of the touch screen and the improvement of the user interface when using the touch screen, a large number of future portable terminals worldwide are expected to adopt a touch screen.

The touch screen includes a position sensor that outputs coordinate values of the touch point when a point on the screen is touched with a finger or the like. The touch screen includes technologies such as a pressure sensitive resistive film type, a capacitive type, a surface acoustic wave (SAW) type, and an infrared type.

In particular, a multi touch technology may be used in a user interface having a touch screen. Multi-touch technology is a technology for recognizing two or more touches at the same time, multi-touch technology using two fingers is scroll, zoom in, zoom out, It allows for more functions such as panning.

In relation to the multi-touch technology, Korean Patent Laid-Open Publication No. 2007-0040821 ("User authentication method using a user input pattern through a key input device") is a multi-touch technology using two fingers to open or narrow two fingers. By continuously performing the enlargement / reduction function and the enlargement / reduction rate by varying, it is disclosed to control the final magnification according to the length of the touch when the operation is spread in the touched state.

When implementing a user interface using such a touch screen, the need for a locking function of the touch screen is particularly higher than that of other input devices. This is because when a user carries a mobile phone, PDA, etc., which has been commonly applied in recent years, in a bag or a pocket, the user frequently reacts to external stimuli to generate an unwanted input, thereby causing unnecessary power. This is because problems causing loss and malfunction are occurring.

As a method of releasing the lock function, a method of using a user-specific password is most commonly used. In relation to this, Korean Patent Laid-Open No. 2001-03321 ("User Authentication Method Using a User Input Pattern Through a Key Input Device") has a method of pressing each key, pressing time, and releasing a key in a key input device according to a user's unique habit. The method of performing user authentication using the above-described key input pattern on the basis of the speed and the time to move to the next key is described.

However, the user authentication method using the key input pattern of the Korean Patent Laid-Open No. 2001-03321 applies a complex algorithm in consideration of various factors such as pressing speed of each key, holding time, releasing speed, and time to move to the next key. Therefore, there is an inadequate aspect to be applied when the miniaturization is the core, as in the case of the image processing apparatus applied to the portable terminal.

Accordingly, there is a need for user authentication of an image processing apparatus that is simple to implement while preventing the theft of a third party when a password or the like is exposed to a third party.

Accordingly, an object of the present invention is to provide a user authentication method of an image processing apparatus having a touch input unit and an image processing apparatus performing the same, which determines whether to authenticate a user according to a pressure value of a touch input other than a password.

A user authentication method of an image processing apparatus having a touch input unit according to an aspect of the present invention for achieving the above object of the present invention, by measuring the pressure on the user's touch input input through the touch input unit of the user Calculating a pressure value of a touch input, comparing a password input through the touch input unit with a preset password, comparing a password input through the touch input unit with a preset password, and comparing the touch input of the user And determining whether to authenticate the user based on the pressure value.

The determining of whether the user is authenticated may include comparing and comparing a password inputted through the touch input unit with a preset password, and a pressure value of the user's touch input is an error range of the reference pressure value. And determining whether it is mine. The determining of whether the user is authenticated may include: when the pressure value of the user's touch input is within an error range of the reference pressure value and the password inputted through the touch input unit and the preset password match the user, It may further comprise the step of allowing authentication for.

The image processing apparatus measures the pressure value of each number or letter of the password input from the user and displays the pressure value of each number or letter of the input password or the average value of the pressure value of each number or letter. It may further comprise the step.

The reference pressure value may be set as an average value of pressure values of each number or letter of a password input from a user a plurality of times when setting a password.

In addition, the pressure value of the user's touch input is characterized by calculating the average value of the pressure value of each number or letter of the password input through the touch input unit.

The reference pressure value may be preset by a user of the image processing apparatus.

According to another aspect of the present invention, an image processing apparatus includes a touch input unit for detecting at least one touch input from a user and a pressure on a user's touch input input through the touch input unit. Calculating a pressure value of the user's touch input, comparing a password input through the touch input unit with a preset password, comparing a password input through the touch input unit with a preset password, and touching the user And a controller configured to determine whether to authenticate the user based on the pressure value of the input.

The controller compares and compares a password inputted through the touch input unit with a preset password, determines whether the pressure value of the user's touch input is within an error range of the reference pressure value, and authenticates the user. You can decide whether or not. In determining whether to authenticate the user, when the pressure value of the user's touch input is within an error range of the reference pressure value and the password inputted through the touch input unit matches the preset password, It is characterized in that for allowing the authentication of the user.

The control unit controls to display the pressure value of each number or letter of the password or the average value of the pressure value of each number or letter by measuring the pressure value of each number or letter of the password inputted from the user. can do.

The reference pressure value may be set to an average value of pressure values of respective numerals or letters of a password input from a user a plurality of times at the time of initial use of the image processing apparatus and a password setting, or to a user of the image processing apparatus. It may be set in advance by.

The pressure value of the user's touch input may be calculated by obtaining an average value of pressure values of each number or letter of a password input through the touch input unit.

The image processing apparatus may include at least one of a password preset by a user, a pressure value of the user touch input, an average value of the pressure values of the user touch input, a reference pressure value, and an error range of the reference input value. It may further include wealth.

The image processing apparatus may be at least one of a mobile communication terminal, a personal digital assistant, a portable multimedia player, an MP3 player, and a television.

According to the present invention, by determining whether to authenticate the user according to the pressure value of the touch input other than the password, it is possible to prevent the theft of the third party when the password or the like is exposed to the third party, while simply user authentication of the image processing apparatus Can be implemented.

In addition, the pressure on the corresponding number or letter of each of the input password so that the user can see the value measured by the initial setting of the password by the first touch or when the password is applied to each of the corresponding number or letter of the password By displaying the value on the screen, the user records or refers to the pressure value according to the user characteristics of the corresponding number or letter of each password input in addition to the password itself, and according to the input environment, input location, etc. It is possible to respond to the authentication error that may occur when the touch pressure of the.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

1A and 1B illustrate user interface screens for explaining a user authentication method of an image processing apparatus having a touch input unit according to an embodiment of the present invention.

The image processing apparatus of FIGS. 1A and 1B is a mobile phone, and the screen of the mobile phone of FIG. 1A shows that the lock is currently set in the mobile phone. When the user touches the touch input unit for input, a window asking whether to release the lock is displayed on the screen of the mobile phone, and when the user selects Yes, a screen for inputting a password is displayed as shown in FIG. 1B. .

If there is no input from the user or the user selects No, the mobile phone does not perform any further operation and enters a standby state according to its algorithm.

In FIG. 1B, a number for inputting a password is displayed, but this is only an example, and a screen for inputting a letter may be displayed, and a display capable of inputting letters and numbers may be provided.

FIG. 1B illustrates a case in which the user inputs a password of '1379', and the number of digits of the password may vary according to the user's setting. When the user inputs a password, the image processing apparatus according to the present invention measures and stores not only the password input by the user but also the degree of pressure applied to each of the corresponding number or letter when the password is input. The measured value of the pressure applied to each of the corresponding number or letter at the time of inputting the corresponding password may be displayed on the screen as the pressure value for the corresponding number or letter of each of the inputted passwords so that the user can see the touch input. . Therefore, the user may record or refer to the pressure value according to the user characteristic of the corresponding number or character of each password input in addition to the password itself, so that the user can perform more secure authentication when the password is touched later.

Preferably, the pressure of each stored number or letter can be compared with a preset reference pressure value for each number or letter of the password. Alternatively, the pressure of each number or letter of the stored password may be averaged and compared with a preset reference pressure value. In addition, the number input from the user is compared with the password of the preset user. The image processing apparatus according to the present invention finally determines whether the corresponding user is authenticated through these two comparison steps. Hereinafter, a user authentication method of the image processing apparatus according to the present invention will be described in detail. .

2 is a flowchart illustrating a user authentication method of an image processing apparatus having a touch input unit according to an embodiment of the present invention.

The process to be described below may be applied when user authentication is required, such as when a lock is set on an image processing apparatus to be used by a user or when an additional authentication procedure is required due to a high security level of an application to be used. .

When the user authentication is required, the image processing apparatus according to the present invention displays image data including a character, a number, and the like for inputting a password (S201).

The user checks the displayed letters or numbers and selects a password by touching the touch input unit, and the image processing apparatus according to the present invention recognizes the letters or numbers input from the user (S202).

In this case, the image processing apparatus according to the present invention has a potential difference in the case of a resistive method, a capacitance in the case of a capacitance method, a wavelength in the case of a surface ultrasonic conduction method, and an IR light in the case of an infrared method. The output value of the interrupt type is exported, and the output value is finally converted into the coordinate type such as (X, Y). The coordinate value of the touch input is able to recognize which character or number has been input from the user in contrast with the display position of the image data of the displayed character or number.

Meanwhile, the image processing apparatus according to the present invention also measures and outputs a pressure value applied when inputting each letter or number input from the user (S203). The recognized letters or numbers, and the respective pressure values of the letters or numbers are stored in the storage unit (S204). Here, the average value calculated by calculating an average value for each pressure value of the input letter or number may be stored.

Steps 202 to 204 may be repeated until the input is terminated depending on whether the password input from the user is terminated (S205).

When the input from the user is finished (Yes in S205), the stored letters or numbers are compared with a preset password (S206). If the letters or numbers entered in this step match the preset password (Yes in S207), again, the stored pressure value of each number or letter of the entered password is set in advance for each number or letter of the password. It is determined whether it is within the range of the reference pressure value (S208). Or it may be determined whether the average value of the pressure value of each number or letter of the input password is within the range of the preset reference pressure value.

Here, the setting of the predetermined reference pressure value includes a method of allowing the user of the image processing apparatus to artificially set the value in advance, and a pressure of a touch input when the user initially sets a password required for access to the image processing apparatus. A method of storing and setting the reference pressure value may be used. Alternatively, it is preferable to set a password to be set at the time of setting the password by the user at the initial use, and the average of the pressure value for each number or letter of the password inputted several times may be set as the reference pressure value. For example, after the initial user inputs "1379" N times (N is a natural number of 2 or more), the average of the pressure values of '1' entered N times and the average of the pressure values of '3' entered N times You can set the average of the pressure values of '7' input N times and the average of the pressure values of '9' N inputs as '1', '3', '7', and '9' respectively. have. Or, after initial use, the user inputs "1379" N times (N is a natural number of 2 or more), and then inputs N times' 1 ', N times' 3', N times' 7 It is also possible to set the average value of the pressure value of ', the total average of the pressure values of the' 9 'input N times as a reference pressure value.

Here, within the range of the reference pressure value means a value within an error range, that is, a range of pressure values smaller than or equal to the reference upper limit and greater than or equal to the reference lower limit, based on the reference pressure value.

The image processing apparatus according to the present invention is the user only when the letter or number input from the user in step 206 matches the preset password, and the pressure of the touch input is in the range of the reference pressure value in step 208 (Yes in S210). Allow authentication to the user (S211). If the entered letter or number does not match the preset password (No in S207), or the pressure of the touch input is not within the range of the preset reference pressure value (No in S210), an authentication failure message is transmitted to the user. (S209).

In the above-described procedure of Fig. 2, steps S206 (and S207) and S208 (and S210) are described as being sequentially performed. However, steps S206 (and S207) and S208 (and S210) may be simultaneously performed. Even if the order is reversed, the user authentication method according to the present invention will not be affected.

3 is a block diagram illustrating an image processing apparatus for performing user authentication according to an embodiment of the present invention. Here, the image processing apparatus will be described using a mobile communication terminal as an example.

The image processing apparatus according to the present invention includes a touch input unit 310, a key input unit 320, a camera module unit 330, a microphone 340, a control unit 350, a storage unit 360, a display unit 370, The speaker 380 and the transceiver 390 may be included.

Referring to FIG. 3, the touch input unit 310 receives at least one touch input on a touch input unit from a user, converts the touch input into a form of a potential difference, capacitance, wavelength, or IR optical interrupt, and converts the converted result into a touch controller. Output to (351). The touch input unit 310 may include a touch screen and may include a touch pad in addition to the touch screen.

The output value of the touch input unit 310 is finally converted by the touch controller 351 into a coordinate form such as (X, Y) and output to the central controller 353. The touch input unit 310 may detect the touch pressure with respect to at least one touch input. The coordinate value of the touch input is able to recognize which character or number has been input from the user in contrast with the display position of the image data of the displayed character or number. The touch input unit 310 may be implemented using a structure capable of detecting both coordinate detection and touch pressure during touch.

The touch controller 351 also analyzes information such as potential difference, capacitance, wavelength, or IR light interrupt input from the touch input unit 310 to determine the pressure value applied to each letter or number input from the user. Output to the central control unit 353. The central control unit 353 obtains an average value of the recognized letters or numbers and the input pressure values of the various touches and stores them in the storage unit 360.

The key input unit 320 receives a key input on a keypad from a user, converts the key input into the form of a key code corresponding to the key input, and outputs the converted key code to the central controller 353. Here, the key input unit 320 may be omitted when the portable terminal device according to the present invention is implemented as a front touch screen.

The camera module unit 330 converts the captured image image into a form of displayable image data through image processing, and outputs the image data to the central controller 353. The camera module unit 330 may include a camera (not shown) and an image processor (not shown) including a CMOS image sensor or a CCD image sensor.

The microphone 340 converts the ambient sound of the user and / or the user into an electrical signal form and outputs the electrical signal to the central controller 353.

The central control unit 353 of the present invention compares a letter or number input from the user with a preset password, and the letter or number input from the user matches the preset password, and the average value of the pressure of the touch input is compared with the reference pressure value. In comparison, the user is allowed to authenticate only when the average value of the pressure of the touch input is within the range of the reference pressure value.

According to a preferred embodiment of the present application, the central control unit 353, with respect to the setting of the reference pressure value, the pressure of the touch input when the user initially set the password for access to the image processing apparatus as the reference pressure value Can be set. In this case, preferably, an initial setting of the image processing apparatus and a password to be set at the time of setting a password by the user may be input several times, and the average of the pressure values for the multiple inputs may be set as the reference pressure value.

The central control unit 353 receives a key code from the key input unit 320 and performs at least one of a character input, a number input, an image processing device setting change, an image processing device setting display, and an application execution corresponding to the key code. Can be done.

The central control unit 353 receives the image data from the camera module unit 330, and stores the image data in the storage unit 360 in the form of an image file that can be recognized by a file system such as FAT16 or FAT32. For example, the stored image file may be deleted, renamed, moved to a folder location, or may be post-processed such as adjusting image brightness, adjusting image color, or inserting characters into the image.

The central controller 353 may receive an electrical signal from the microphone 340, convert the electrical signal into an electrical signal that can be transmitted through voice processing, and output the converted result to the transceiver 390.

The central controller 353 receives an electrical signal corresponding to the voice of the other party from the transceiver 390, converts the electrical signal into an electrical signal capable of voice output through voice processing, and converts the converted result into a speaker 380. Can be printed as

The storage unit 360 stores values according to the present invention, such as a password preset by a user, pressure values of a touch input, an average value of pressure values, a reference pressure value, and an error range thereof. The storage unit 360 also receives and stores at least one of setting information, operating system execution information, and application execution information of the image processing apparatus from the central control unit 353, and sets the setting information and the operating system at the request of the central control unit 353. At least one of execution information and application execution information is output to the central controller 353.

The display unit 370 receives the image data from the central control unit 353 and outputs the image data on the screen of the image processing apparatus. The display unit 250 may be implemented using a display device such as a liquid crystal display (LCD).

The speaker 380 may receive an electrical signal from the central controller 353, convert the electrical signal into a sound, and output the sound.

The transceiver 390 may receive a transmittable electrical signal corresponding to a sound of a user and / or a user's surroundings from the central controller 353, and transmit the transmittable electrical signal to a counterpart portable terminal through a wired or wireless network.

The transceiver 390 may receive an electrical signal corresponding to the voice of the counterpart from the counterpart terminal through a wired or wireless network, and output the electrical signal corresponding to the voice of the counterpart to the central controller 353.

The touch screen controller 351 and the central controller 353 according to the present invention may be implemented as one block like the controller 350 and may be implemented as one semiconductor chip.

In another embodiment of the present invention, the touch screen input unit 310 and the touch screen controller 351 may be implemented in one block like the touch screen module unit (not shown). For example, the touch screen controller 351 may be manufactured together by the same semiconductor process as the manufacturing process of the touch screen input unit 310.

The image processing apparatus according to the present invention described above is not only a mobile communication terminal but also various portable devices such as a personal digital assistant (PDA) having a touch input unit, a portable multimedia player (PMP), an MP3 player, and the like. The concept includes a television having a device and a touch input.

Although described with reference to the above embodiments, those skilled in the art will understand that various modifications and changes can be made without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

1A and 1B illustrate user interface screens for explaining a user authentication method of an image processing apparatus having a touch input unit according to an embodiment of the present invention. .

2 is a flowchart illustrating a user authentication method of an image processing apparatus having a touch input unit according to an embodiment of the present invention.

3 is a block diagram illustrating an image processing apparatus for performing user authentication according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

310: touch input unit 320: key input unit

330: camera module unit 340: microphone

350: control unit 360: storage unit

370: display unit 380: speaker

390: transceiver

Claims (15)

In the user authentication method of the image processing apparatus having a touch input unit, Calculating a pressure value of the user touch input by measuring a pressure on a user's touch input input through the touch input unit to input a password; Comparing a password input through the touch input unit with a preset password; And And determining whether to authenticate the user based on a comparison result of a password input through the touch input unit with a preset password and a pressure value of the user touch input. Authentication method. The method of claim 1, wherein determining whether to authenticate the user comprises: Comparing and comparing a password inputted through the touch input unit with a preset password; And And determining whether a pressure value of the user touch input is within an error range of a reference pressure value. The method of claim 1, Measuring the pressure value of each number or letter of the password inputted from the user and displaying the pressure value of each number or letter of the input password or the average value of the pressure value of each number or letter; A user authentication method of an image processing apparatus having a touch input unit. The method of claim 1, further comprising: allowing authentication of the user when the pressure value of the user touch input is within an error range of the reference pressure value and the password inputted through the touch input unit and a preset password match. User authentication method of the image processing apparatus having a touch input unit further comprising. The method of claim 1, wherein the reference pressure value, A user authentication method of an image processing apparatus having a touch input unit, wherein the password is set as an average value of pressure values of respective numbers or letters of a password input from a user a plurality of times. The method of claim 1, wherein the pressure value of the user touch input, And calculating the average value of the pressure values of the respective numbers or letters of the password inputted through the touch input unit. The method of claim 1, wherein the reference pressure value, The user authentication method of an image processing apparatus having a touch input unit, which is set in advance by a user of the image processing apparatus. A touch input unit to detect at least one touch input from a user; Wow The pressure value of the user's touch input is calculated by measuring the pressure on the user's touch input input through the touch input unit for password input, comparing the password input through the touch input unit with a preset password, and the touch input. And a controller configured to determine whether to authenticate the user based on a comparison result of the password inputted through the unit and a preset password and the pressure value of the user touch input. The method of claim 8, wherein the control unit, Compare and compare the password inputted through the touch input unit with a preset password, and determine whether to authenticate the user by determining whether the pressure value of the user touch input is within an error range of the reference pressure value. An image processing apparatus. The pressure value of each number or letter of the input password or the pressure value of each number or letter by measuring the pressure value of each number or letter of the password input from the user. An image processing apparatus for controlling to display the average value of the. The method of claim 8, wherein the control unit, When the pressure value of the user touch input is within the error range of the reference pressure value, and the password input through the touch input unit and the preset password coincides, authentication of the user is allowed. Device. The method of claim 8, wherein the reference pressure value, And an average value of pressure values of each number or letter of a password input from a user a plurality of times when setting a password. The method of claim 8, wherein the pressure value of the user touch input, And calculating an average value of pressure values of respective numbers or letters of the password inputted through the touch input unit. The method of claim 8, wherein the reference pressure value is The image processing device, characterized in that preset by the user of the image processing device. The storage device of claim 8, further comprising at least one of a password preset by a user, a pressure value of the user touch input, an average value of the pressure values of the user touch input, a reference pressure value, and an error range of the reference input value. An image processing apparatus further comprising a wealth.

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