KR101657289B1 - Screen locking of the display device - Google Patents

Abstract

In a display device such as a computer monitor or a television (TV), a user pattern is formed by using a key combination of an OSD (On Screen Display), and a screen lock function is performed based on the user pattern. A function setting unit for setting a screen locking function of the display device and generating an input; An OSD key unit for inputting a user pattern for setting and releasing a screen lock function; A pattern recognition unit for forming a user pattern by combining the OSD keys input from the OSD key unit; A pattern storage unit for storing a pattern recognized by the pattern recognition unit; And a screen control unit which stores the pattern recognized by the pattern recognition unit in the pattern storage unit with a password, compares the currently recognized pattern with the stored pattern, and controls the screen lock according to the comparison result, Implement a locking mechanism.

Description

Screen locking of the display device < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen lock of a display device and more particularly to a display device such as a computer monitor or a television (TV) which forms a user pattern by using a key combination of an OSD (On Screen Display) The present invention relates to a screen locking device for a display device, which can restrict the display of images output from a PC or a video device by performing a locking function.

In general, a display device such as a computer monitor or a television displays an image through a screen.

In recent years, a computer or a television can display an image transmitted from an external image device (for example, a USB, a DVD player, or the like) as well as an image transmitted through a self-stored image or the Internet.

In particular, a television (hereinafter referred to as "TV") which is one of the signal reproduction systems receives a TV broadcast signal of a plurality of channels transmitted from a plurality of TV broadcast stations. When the user selects a predetermined channel, a selected one of the TV broadcast signals of the plurality of channels being received is selected. After the video signal processing and the audio signal processing operation of the selected channel are performed, the video signal and the audio signal are reproduced.

Since it is common that the TV is installed in a family shared space such as a living room of a general household, in order to obtain the maximum audience rating in each TV broadcasting station, a broadcasting program differentiated according to the age is organized according to the age difference between the household members of the viewer family . In addition, the TV may be installed in a private space when it is necessary for watching an educational channel. Therefore, it may be possible for a minor to easily view a harmful image of a youth without any separate viewing restrictions.

Therefore, a technique for limiting the use of a display device and maximizing security has been proposed in a television or a computer used by a majority.

The following Patent Documents 1 to 3 disclose conventional techniques for restricting the use of a display in a display device.

In the prior art disclosed in Patent Document 1, the adolescent harmful image locking device of the signal reproducing system includes a recognition section for recognizing a video signal related to a harmful marker of a youth included in a video signal to be reproduced, And a microcomputer for activating a lock function for a currently reproduced image if a predetermined password is not input. According to the Youth Harmful Program Locking Device, if the password is not input even though the harmful mark has been detected, it is possible to automatically block the harmful image of the youth without installing the V-chip in the signal playback system There is an advantage.

The prior art disclosed in Patent Document 2 enables real-time face recognition technology and human body detection technology to use a PC only for an authorized user without troublesome procedures such as password input and fingerprint input. In particular, when real-time face detection and human body recognition technology is applied, the system automatically locks the screen when it leaves the window from login, analyzes the system process after a certain time, and enters the power saving mode to switch to the power saving mode do. Then, when the user returns, the user is exited from the power saving mode after recognizing the human body, and authentication is performed by face recognition only by taking a monitor for PC use in the locked state, thereby minimizing the inconvenience of the user and maximizing the security.

The conventional technique disclosed in Patent Document 3 includes the steps of receiving a touch signal from a user for a predetermined time; Comparing the input touch signal with a touch pattern including a predefined time concept; And unlocking the device when the input touch signal matches the touch pattern including the predefined time concept, thereby providing a method of unlocking the device using the touch pattern including the time concept .

Korean Patent Publication No. 2002-0093276 (Dec. 16, 2002) Korean Patent Laid-Open No. 10-2009-0018440 (Published Feb. 20, 2009) Korean Registered Patent No. 10-1112779 (Registered on January 30, 2012)

However, the above conventional techniques have the following problems.

For example, in the prior art disclosed in Patent Document 2, a separate sensing device and a recognition device for human face recognition and human body detection have to be additionally used, so that the configuration of the system is complicated and can not be immediately applied to existing systems have.

Also, since the conventional technique disclosed in Patent Document 3 uses a touch pattern, it is not applicable to a display device that does not use a touch panel such as a general computer monitor or a television.

In addition, the prior art disclosed in Patent Document 1 has the inconvenience of separately inserting a harmful mark into a video signal for each video to be restricted.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems occurring in the prior art, and it is an object of the present invention to provide a display device such as a computer monitor or a television (TV) And to provide a screen locking device and a method thereof, which can restrict the display of images output from a PC or a video device by performing a screen locking function based on the information.

It is another object of the present invention to provide a display device, such as a computer monitor or a television, in which a screen lock function can be realized by using only a key formed on an existing product without modifying a separate operation key, A screen locking device and a method thereof.

According to an aspect of the present invention, there is provided a screen locking apparatus for a display device, including a function setting unit for setting a screen locking function of a display device and generating an input; An OSD key unit for inputting a user pattern for setting and releasing a screen lock function; A pattern recognition unit for forming a user pattern by combining the OSD keys input from the OSD key unit; A pattern storage unit for storing a pattern recognized by the pattern recognition unit; And a screen control unit for storing the pattern recognized by the pattern recognition unit in the pattern storage unit with a password, comparing the currently recognized pattern with the stored pattern, and controlling the screen lock according to the comparison result.

When the screen locking function is set by the function setting unit, the screen control unit locks the screen after locking the user pattern formed through the pattern recognition unit in the pattern storage unit with the password, and in the screen locking state, The pattern recognition unit compares the currently recognized pattern with the pattern registered in the pattern storage unit, and releases the screen locking if the pattern is identical.

The screen control unit may include a function determination module for determining a screen locking function or a screen unlocking function. A pattern input module that receives a pattern through a combination of OSD keys input through an OSD key part; And a pattern storage module for registering a pattern input through the pattern input module as a password for setting a screen lock function or releasing a screen lock function.

The screen control unit recognizes an input pattern by comparing the pattern input through the pattern input module and the registration pattern stored in the pattern storage module when the screen locking function is canceled, and outputs a pattern comparison result .

The screen control unit may further include a screen control module for controlling the screen of the display device based on the pattern comparison result output from the pattern recognition module.

According to another aspect of the present invention, there is provided a method of controlling a screen of a display device by forming a pattern using an OSD key, the method comprising: (a) Receiving an OSD key operation signal when it is set; (b) forming a user pattern by combining the OSD keys received in the step (a), registering the created user pattern and locking the screen; (c) guiding a user pattern input when an input occurs in the screen locking state; (d) if the user pattern is input after the step (c), comparing the input user pattern with the pre-registered user pattern to check whether the input user pattern matches the registered user pattern; (e) canceling the screen locking state if the inputted user pattern matches the registered user pattern as a result of the checking in the step (d).

According to the present invention, in a display device such as a computer monitor or a television (TV), a user pattern is formed using only a key combination of OSD (On Screen Display) without adding a separate operation key or adding a recognition device, , It is possible to restrict the display of images output from a PC or a video apparatus.

Particularly, since a screen locking function can be implemented by using only a key formed in an existing product without changing the operation keys on the display device and simply changing the software, the addition of the screen locking function There is an advantage that the cost can be minimized.

1 is a block diagram of a screen locking device of a display device according to the present invention;
Fig. 2 is a block diagram of an embodiment of the screen control unit of Fig. 1,
3 is a flowchart illustrating a screen locking method of a display device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a screen locking apparatus and method of a display apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a screen locking device of a display device according to a preferred embodiment of the present invention.

The screen locking device of the display device according to the present invention includes an OSD key unit 10, a pattern recognition unit 20, a function setting unit 30, a pattern storage unit 40, and a screen control unit 50.

The function setting unit 30 sets a screen locking function of the display device and generates an input according to a user's operation for using the screen when the screen locking function is executed.

The OSD key unit 10 is a part for inputting a user pattern for setting and releasing the screen lock function, and it is preferable that the OSD key provided in the general display device is used as it is. Here, the OSD key refers to a menu key, a menu up / down key, an adjustment key, and the like provided in a general display device.

The pattern recognition unit 20 forms a user pattern by combining the OSD keys input from the OSD key unit 10, and recognizes the formed user pattern. For example, the user inputs a pattern for recognizing himself / herself by pressing a plurality of OSD keys provided in the display device in order to release the screen lock or the locked screen of the display device. OSD keys are sequentially combined and recognized as a user pattern.

The pattern storage unit 40 stores the pattern recognized by the pattern recognition unit 20. [

The screen control unit 50 stores the pattern recognized by the pattern recognition unit 20 as a password in the pattern storage unit 40, compares the currently recognized pattern with the stored pattern, and locks the screen according to the comparison result And the like. The screen control unit 50 may use a micro control unit (MCU) provided in a conventional display device.

When the screen lock function is set by the function setting unit 30, the screen control unit 50 registers the user pattern formed through the pattern recognition unit 20 in the pattern storage unit 40 as a password, And when an input is generated by the function setting unit 30 in the screen locking state, the pattern currently recognized by the pattern recognition unit 20 is compared with the pattern registered in the pattern storage unit 40, It is desirable to release the screen locking.

2, the screen control unit 50 includes a function determination module 51 for determining a screen locking function or a screen unlocking function; A pattern input module 52 for receiving a pattern through a combination of OSD keys input through the OSD key unit 10; A pattern storage module 53 for registering a pattern inputted through the pattern input module 52 as a password for setting a screen lock function or releasing a screen lock function; A pattern recognition module for comparing a pattern input through the pattern input module 52 and a registration pattern stored in the pattern storage module 53 when the screen lock function is canceled to recognize an input pattern and outputting a pattern comparison result 54); And a screen control module 55 for controlling the screen of the display device based on the pattern comparison result output from the pattern recognition module 54.

The operation of the screen locking device of the display device according to the preferred embodiment of the present invention will now be described in detail.

First, a user using a display device sets a screen lock function through the function setting unit 30 in order to restrict the use of a display device by a person using the screen lock function. Here, the function setting unit 30 refers to a portion for setting a specific function by pressing a start button (or a start menu) when the display device is a computer monitor. Press the Start button to find the main menu and select the Display Lock menu from the main menu. The display lock menu has a selection menu (yes) for setting the screen locking function and a selection menu (no) for releasing the screen locking function. If the screen lock function is not set and yes is selected to set the screen lock function, the user pattern input standby mode is selected. Although the present invention has been described in connection with the setting of the screen lock function using the start button, the present invention is not limited thereto, and the screen lock function may be implemented using a combination of various keys provided on the keyboard or a combination of buttons using a mouse You can also select the function to disable the screen lock function.

In the state where the screen lock function is set, the user presses a plurality of OSD keys basically provided in the OSD key unit 10 according to the pattern desired by the user. For example, the desired pattern is input by pressing the OSD key, the menu up / down key, and the adjustment key in sequence, changing the order of the keys, or pressing the same key multiple times. Preferably, the OSD key is input four times in order to form a user pattern.

When the OSD key provided on the OSD key unit 10 is operated, the pattern recognition unit 20 forms a user pattern by sequentially combining the information corresponding to the OSD key to be operated. And transmits the formed user pattern to the screen control unit 50.

The screen control unit 50 receives a user pattern transmitted from the pattern recognition unit 20 through the pattern input module 52 when the screen locking function is set through the function determination module 51. [ The user pattern received from the pattern storing module 53 is stored in the pattern storing unit 40 as a user pattern for releasing the screen, and the user pattern is registered. The user pattern stored in this way becomes the password for releasing the lock screen.

Thereafter, the screen control module 55 generates a screen lock control signal to control a part for controlling the screen display, thereby locking the screen. The locked screen is the same or extremely similar to a screen executed when power saving is performed in a normal display device.

When a user or another user connects an image device or a memory device to use the display device or generates an input using a keyboard or an input device (a mouse or a remote controller) while the screen is being wound, the screen control of the screen control section 50 The module 55 recognizes this and displays a message to input a user pattern on the screen.

When a message prompting the user to input the user pattern is displayed on the screen, the user or another user inputs the user pattern inputted in the screen locking function. Here, the user pattern is input through the OSD key unit 10 as well.

The OSD key operation signal input through the OSD key unit 10 is input to the pattern recognition unit 20. The pattern recognition unit 20 generates a user pattern by sequentially combining input OSD keys, 50).

The pattern input module 52 of the screen control unit 50 receives the user pattern output from the pattern recognition unit 20 and the pattern recognition module 54 registers the user pattern and the pattern storage unit 40 The user patterns are compared and checked to see if they match. Here, if the user has input the first screen lock setting function, the user pattern will be accurate, and if it is not the user, an accurate user pattern can not be input.

Accordingly, the pattern recognition module 54 compares the inputted user pattern with the pre-registered user pattern, and transmits the comparison result to the screen control module 55. [ For example, data indicating that the user patterns match and data indicating that the user patterns do not match are transmitted to the screen control module 55. Data "11" can be used to digitally match the pattern, and data "00" to match the pattern.

The screen control module 55 maintains the screen lock or releases the screen lock based on the pattern comparison result. For example, when data matching the user pattern is input, the locked screen is released to enable the user to use the display device. Otherwise, when the user pattern data is inconsistent, the locked screen state is maintained. It is also possible to guide user pattern input errors as needed.

Thereby, it is possible to execute or cancel the screen lock function using only a combination of OSD keys provided basically without attaching a separate operation key or a recognition device to the display device.

FIG. 3 is a flowchart illustrating a method of locking a screen of a display device according to the present invention. FIG. 3 is a flowchart illustrating a method of locking a screen of a display device according to an embodiment of the present invention. (b) forming a user pattern by combining the OSD keys received in the step (a), registering the formed user pattern and locking the screen (S105 to S106); (c) guiding a user pattern input when an input occurs in the screen locking state (S107 to S108); (d) comparing the input user pattern with the pre-registered user pattern when the user pattern is inputted after the step (c), and checking whether the inputted user pattern matches the registered user pattern (S109 to S111); (e) releasing the screen locking state if the inputted user pattern and the registered user pattern match with each other as a result of the checking in the step (d) (S112).

The screen locking method of the display apparatus according to the preferred embodiment of the present invention will be described in detail as follows.

First, in step S101, a user who uses the display device sets a screen lock function through the function setting unit 30 in order to restrict the use of a display device by a person using the screen lock function. Here, the function setting unit 30 refers to a portion for setting a specific function by pressing a start button (or a start menu) when the display device is a computer monitor. A specific method of setting the screen locking function is the same as the description of the screen locking device of FIGS. 1 and 2 described above.

If the screen lock function is set, the process moves to step S102 and waits for pattern input.

In step S103, the user who has set the screen lock function presses a plurality of OSD keys provided in the OSD key unit 10 according to a desired pattern. For example, the desired pattern is input by pressing the OSD key, the menu up / down key, and the adjustment key in sequence, changing the order of the keys, or pressing the same key multiple times. Preferably, the OSD key is input four times in order to form a user pattern.

When the OSD key provided in the OSD key unit 10 is operated at a predetermined time (S104), the pattern recognition unit 20 forms a user pattern by sequentially combining the information corresponding to the OSD key operated in step S105. And transmits the formed user pattern to the screen control unit 50.

The screen control unit 50 receives a user pattern transmitted from the pattern recognition unit 20 through the pattern input module 52 when the screen locking function is set through the function determination module 51. [ The user pattern received from the pattern storing module 53 is stored in the pattern storing unit 40 as a user pattern for releasing the screen, and the user pattern is registered. The user pattern stored in this way becomes the password for releasing the lock screen.

Then, in step S106, the screen control module 55 generates a screen lock control signal to control a part for controlling the screen display, thereby locking the screen. The locked screen is the same or extremely similar to a screen executed when power saving is performed in a normal display device.

If the user or another user generates an input using a keyboard or an input device (a mouse or a remote controller) by connecting a video apparatus or a memory device to use the display apparatus in step S107 as in step S107, The screen control module 55 of the screen control unit 50 recognizes this and displays a message to input a user pattern on the screen.

When a message for inputting a user pattern is displayed on the screen, the user or another user inputs a user pattern entered in the screen lock function in step S109. Here, the user pattern is input through the OSD key unit 10 as well.

The OSD key operation signal input through the OSD key unit 10 in step S110 is input to the pattern recognition unit 20. The pattern recognition unit 20 generates a user pattern by sequentially combining the OSD keys input thereto, To the screen control unit (50).

The pattern input module 52 of the screen control unit 50 receives the user pattern output from the pattern recognition unit 20 in step S111 and the pattern recognition module 54 compares the input user pattern with the pattern storage unit 40, With the user patterns registered in advance, and confirms whether they match. Here, if the user has input the first screen lock setting function, the user pattern will be accurate, and if it is not the user, an accurate user pattern can not be input.

Accordingly, the pattern recognition module 54 compares the inputted user pattern with the pre-registered user pattern, and transmits the comparison result to the screen control module 55. [ For example, data indicating that the user patterns match and data indicating that the user patterns do not match are transmitted to the screen control module 55. Data "11" can be used to digitally match the pattern, and data "00" to match the pattern.

In step S112, the screen control module 55 maintains the screen lock or releases the screen lock based on the input pattern comparison result. For example, when data matching the user pattern is input, the locked screen is released to enable the user to use the display device. Otherwise, when the user pattern data is inconsistent, the locked screen state is maintained. It is also possible to guide user pattern input errors as needed.

Thereby, it is possible to execute or cancel the screen lock function using only a combination of OSD keys provided basically without attaching a separate operation key or a recognition device to the display device.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is applied to a technique for locking or unlocking a screen of a display device.

10: OSD key part
20: pattern recognition unit
30: Function setting section
40: pattern storage unit
50:

Claims (6)

An apparatus for locking a screen in a display apparatus,
A function setting unit for setting a screen lock function of the display device and generating an input;
An OSD key unit for inputting a user pattern for setting and releasing a screen lock function;
A pattern recognition unit for forming a user pattern by combining the OSD keys input from the OSD key unit;
A pattern storage unit for storing a pattern recognized by the pattern recognition unit;
And a screen control unit for storing the pattern recognized by the pattern recognition unit in the pattern storage unit as a password, comparing the currently recognized pattern with the stored pattern, and controlling the screen lock according to the comparison result,
Wherein the screen control unit locks the screen after registering the user pattern formed through the pattern recognition unit in the pattern storage unit with the password when the screen locking function is set by the function setting unit, Wherein the pattern recognition unit compares the currently recognized pattern with the pattern registered in the pattern storage unit, and releases the screen locking if the pattern is identical.
delete The method of claim 1, wherein the screen control unit comprises: a function determination module for determining a screen locking function or a screen unlocking function; A pattern input module that receives a pattern through a combination of OSD keys input through an OSD key part; And a pattern storage module for registering the pattern inputted through the pattern input module as a password for setting a screen lock function or releasing a screen lock function.
The screen control unit may recognize the input pattern by comparing the pattern inputted through the pattern input module and the registration pattern stored in the pattern storage module when the screen locking function is canceled, Further comprising a module for displaying the screen.
The apparatus of claim 4, wherein the screen control unit further comprises a screen control module for controlling a screen of the display device based on a pattern comparison result output from the pattern recognition module.
delete

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