KR20010067729A - Method for authenticating a user by using a face recognition in a screen saver - Google Patents

Abstract

PURPOSE: A method for certifying user using face recognition in a screen saver is provided to prevent a computer from being used abnormally by storing the normal user's face image(the person activates a screen saver) in a memory and comparing the face image with the current user's image. CONSTITUTION: In a user certifying method of a screen saver, face information capturing a user's face image is stored in a memory(300). It is decided whether an input signal is provided through a keyboard and a mouse on condition that a screen saver is activated(310, 306). If an input signal through a mouse is provided, a user's face image is photographed using a camera(308). It is certified whether the user is normal user by reading image information of a user' face photographed by the camera and face information of a user being stored previously in the memory and comparing two image information(309, 311).

Description

METHOD FOR AUTHENTICATING A USER BY USING A FACE RECOGNITION IN A SCREEN SAVER}

The present invention relates to a user authentication method using face recognition in a screen saver, and in particular, by authenticating whether the user is authorized using a face image to prevent computer theft without complicated password key input process and to secure key data and various systems. It relates to a user authentication method to maintain the.

A screen saver, commonly referred to as a screen saver, is software for power saving that determines whether a computer system (e.g., keyboard, mouse, ...) is operating or not. Perform screen protection when in the state.

The operating condition of the screen saver is selected by a user in some cases, in which case the static interval period of the system in which the screen saver operates is selectable.

That is, before the screen saver operates, various kinds of operation conditions can be specified, but after the screen saver starts operation, the screen saver cannot be controlled. In particular, a password protected screen saver cannot exit the screen saver state even if another user wants to leave a message to the original user.

On the other hand, an unprotected screen saver detects the operating state of the keyboard or mouse, deactivates it, and returns to the previous system active state, but does not do anything other than leave a message to the original user. After a message is left in the state, the computer's power is wasted until the screen saver is activated.

In addition, in the screen saver, its use is largely classified into two types: protection of a monitor and prevention of theft of a computer by another person. The monitor's protection function is used to prevent the monitor from being damaged by an uneven electron beam by continuously outputting an image on the monitor when the user is away for a long time.

In addition, screen savers are often used to prevent unauthorized persons from using the computer when the user is away for a while. In other words, the screen saver is activated when the user is away, and when the user returns, the screen saver password is entered and the screen saver is released to use the computer. Therefore, unauthorized people cannot use the computer when the screen saver is in operation, thus preventing the computer from being stolen and maintaining the security of important data and systems.

In more detail, FIG. 1 illustrates an example of an authentication method of a screen saver for authenticating a user by inputting a preset password using a keyboard and a mouse in a screen saver of the related art.

First, when the computer system is in a static state for a predetermined time or more, the screen saver program is activated (step 201).

With the screen saver program activated, the screen saver program continuously detects whether a keyboard or mouse input signal is provided from the user (step 202).

If no keyboard or mouse input signal is provided in the sensing step 202, the screen protection state is continuously maintained (step 203).

On the other hand, if a keyboard or mouse input signal is provided in the sensing step 202, a dialog window for inputting an encryption key is output to the monitor (step 204). Then, it is determined whether the password provided from the user is an authorized password (step 205).

If it is not the authorized password of the screen saver in decision step 205, an error message is output and the screen returns to the screen protection state (step 206). On the other hand, if it is the authorized password of the screen saver at decision step 205, the user is authenticated, i.e., the screen saver program is terminated, so that the user can use the computer (step 207).

However, as described above, in the screen saver of the related art, the authentication function method of the screen saver has a problem that the user must always remember the password of the screen saver and must input the keyboard every time even if the password is correctly stored. In particular, when the password of the screen saver is exposed to other people, anyone who knows the password can use the computer, which requires a lot of effort to prevent the exposure of the password.

Accordingly, the present invention has been made to solve the problems of the prior art, the purpose of which is to store the face image of the original user (user who activated the screen saver) in the memory, and then the user (user currently using the computer) When the authentication process is performed with a face image of, the previously saved face image is compared with the face image on which the authentication process is performed, and the screen saver is deactivated only when the same is the same. The present invention provides a user authentication method using face recognition in a screen saver that eliminates and prevents theft of a computer by exposure of a password.

According to the present invention for achieving the above object, a user authentication method using face recognition in a screen saver comprises the steps of: storing the face information captured by the user's face image in the memory; Determining whether an input signal is provided through a keyboard and a mouse while the screen saver is activated; Photographing a face image of a user using a camera when an input signal through a mouse is provided in the determining step; And reading the image information of the user's face photographed by the camera and the user's face information previously stored in the memory and comparing the two image information to authenticate whether the user is a legitimate user.

1 is a detailed flowchart illustrating a method of releasing a function of a screen saver by inputting a preset password using a keyboard and a mouse in a screen saver according to the related art;

2 is a block diagram for performing a user authentication method using face recognition in the screen saver according to the present invention,

3 is a detailed flowchart illustrating a user authentication method using face recognition in the screen saver according to the present invention.

4A is a view showing a dialog window for inputting an encryption key according to the present invention on a monitor;

4B is a view showing an error message on a monitor according to the present invention;

4C is a view showing a message for capturing a user image on a monitor according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: keyboard 15: mouse

20: screen saver driver 30: memory

40: monitor 50: camera

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment according to the present invention.

Referring to FIG. 2, a block diagram illustrating a user authentication method using face recognition in a screen saver according to the present invention includes a keyboard 10, a mouse 15, a screen saver driver 20, and a memory ( 30, a monitor 40, and a camera 50.

The keyboard 10 and the mouse 15 are input devices for inputting various characters and selection information. The keyboard 10 and the mouse 15 capture driving signals for driving the screen saver, an authentication password for the user, and an image of the user's face. Then, input control is performed so that the face information currently learned (photographed) through the camera mounted on the computer may be provided to the screen saver driver 20.

The screen saver driver 20, which may be implemented as a microprocessor, activates the screen saver according to a driving signal provided by input control of the keyboard 10 and the mouse 15, and outputs the screen saver to the monitor 40. 10) and a user-only authentication password provided by the input control of the mouse 15 and the face information of the user are provided to the memory 30. Subsequently, the screen saver driver 20 receives the image information of the user's face photographed by the camera 50, reads the user's face information previously stored in the memory 30, and thus, the image information of the user's face. Image information of the user's face taken by 50) is compared with the user's face information read from the memory 30, and the user is authenticated only when the authorized user (when both image information is the same) and the screen saver program is executed. Shut down to control the party user's use of the computer.

The memory 30 stores a user's authentication password and user's face information provided from the screen saver driver 20, and displays the screen saver on the monitor 40 according to the activation control of the screen saver driver 20. )do.

Then, the camera 50 photographs the image information of the user's face and provides it to the screen saver driver 20.

A user authentication method using face recognition in the screen saver according to the present invention having the above-described configuration will be described in more detail with reference to the flowchart of FIG. 3.

First, the user installs a screen saver program on his computer by using the keyboard 10 and the mouse 15, and sets the user's own authentication password in the memory 30 interlocked with the screen saver driver 20. Subsequently, when the user captures his / her face image (for example, currently learns his / her face through a camera mounted on a computer), the user can provide the screen saver driver 20 with face information. In operation 300, the screen saver driver 20 stores face information of the user provided by input control of the keyboard 10 and the mouse 15.

After the user's face information is stored in the memory 30, the user performs a variety of tasks using a computer, and if the user is away for a while or directly driving the screen saver, the screen saver driver 20 shown in FIG. When the computer system is in a static state for a predetermined time or when the screen saver is directly driven, that is, whether an input signal of the keyboard 10 and the mouse 15 is provided (step 301).

When an input signal is provided from the keyboard 10 in the sensing step 301, as shown in FIG. 4A, a dialog window for inputting an encryption key is output to the monitor 40 (step 302). Thereafter, it is determined whether the password provided from the user is an authorized password as compared with the password previously set in the memory 30 (step 303).

If the screen saver is not an authorized cipher in the determination step 303, an error message is output and returned to the screen protection state as shown in FIG. 4B (step 304). On the other hand, if it is the authorized password of the screen saver in the determination step 303, the user is authenticated, i.e., the screen saver program is terminated so that the party user can use the computer (step 305).

On the other hand, if the input signal is not provided from the keyboard 10 in the sensing step 301, the input signal from the mouse 15, that is, the action of moving the mouse 15 or clicking the button of the mouse 15 Check if an input signal is provided (step 306).

If the input signal of the mouse 15 is not provided in the check step 306, the screen protection state is continuously maintained (step 307). On the other hand, if the input signal of the mouse 15 is provided in the check step 306, as shown in Fig. 4c, a monitor window "40 to capture the user's face, see the camera accurately" monitor 40 At the same time, the camera 50 is controlled to capture a face image of the user at step 308.

Subsequently, the screen saver driver 20 receives the image information of the user's face photographed by the camera 50, reads the user's face information pre-stored in the memory 30, and thus, the image information of the user's face. The image information of the user face photographed by 50 is compared with the face information of the user read from the memory 30 to determine whether the user is an authorized user (the two image information are the same user) (step 309).

If the two image information is not the same in the determination step 309, an error message is output and the screen protection state is continuously maintained (step 310). On the other hand, if the two image information is the same in the determination step 309, the user is authenticated, i.e., the screen saver program is terminated to control the party user to use the computer (step 311).

Therefore, when a mouse input signal is provided from the user in the screen protection state, the camera 50 may be driven to capture and acquire a face image of the user, and then may be compared with the user face image information previously stored in the memory 30. Only disable the screen saver so that the user can use the computer.

Therefore, in the present invention, when a user inputs a mouse input signal while the screen protection function is activated while the user performs various tasks by using a computer, a user inputs a face image of the user by driving the camera. After that, the screen saver function can be turned off only when it is the same compared to the user face image information previously stored in the memory so that the user can use the computer, eliminating the need to remember and enter the screen saver password correctly. You can turn off the screen saver more quickly. In addition, since it is almost unnecessary to enter a password using the keyboard, the possibility of password exposure due to frequent keyboard inputs can be significantly reduced. In particular, the authentication method by user's face recognition and the conventional password input method. By using in parallel, there is an effect that can compensate for the shortcomings of the password authentication method only by face recognition vulnerable to various changes.

Claims (4)

In the user authentication method of the screen saver, Storing face information of capturing the user's face image in a memory; Determining whether an input signal is provided through a keyboard and a mouse while the screen saver is activated; Photographing a face image of a user using a camera when an input signal through a mouse is provided in the determining step; And verifying whether the user is a legitimate user by reading image information of the user face photographed by the camera and face information of the user previously stored in the memory and comparing the two image information. User authentication using face recognition in screen saver. The method of claim 1, wherein when an input signal through a keyboard is provided in the determining step, Outputting a dialog window for inputting an encryption key to the user, and if a password authorized by the user is provided, further verifying whether the user is a party user using face recognition in the screen saver. User Authentication Method. The method of claim 1, wherein the two image information, And image recognition of the user's face photographed by the camera and face information of the user read from the memory. The method of claim 1, wherein authenticating whether the user is a party user, A user authentication method using face recognition in a screen saver, characterized in that for controlling the user to use the computer by terminating the screen saver program.