KR20000059647A - apparatus for seletively protecting an image in a display system and method thereof - Google Patents

Abstract

PURPOSE: An apparatus for preventing a harmful display content of a display system and a method of the same are provided for judging as to whether a certain displayed content of a monitor or a television is harmful to youth, disconnecting an output if needed, storing a data displayed on the screen and checking the displayed contents by a parent or manager. CONSTITUTION: A computer main body(10) is provided as an image supply resource apparatus. A monitor(12) is provided as a display apparatus. A screen disconnecting apparatus(5) is operated by a power supply of a power supply unit(7) between the computer main body(10) and the monitor(12) for checking and disconnecting the contents of the monitor(12). The screen disconnection apparatus(5) includes a switching apparatus(14). The switching apparatus(14) selectively interfaces an image information between the computer main body(10) and the monitor(12) with respect to each part of the screen disconnecting apparatus(5).

Description

Apparatus for seletively protecting an image in a display system and method

The present invention relates to a harmful screen blocking device and a method of the display system, and more particularly, to determine whether the screen output from a monitor or television is harmful to minors, etc. The present invention relates to a harmful screen blocking device of a display system in which a data management system such as a parent can verify the data after storing the data and a password management method.

Recently, with the development of computer and multimedia technologies, various information can be easily accessed through display devices such as computers and televisions. Recently, as multimedia and Internet technologies are widely used, the amount of video information that can be accessed is congested.

Pornography occupies a considerable portion of the video information, and at present, an image including the pornographic video information is easily exposed to a child through a computer or a video tape recorder.

In particular, it is a social problem because minors can easily access pornographic image information or programs through the Internet or computer communication, and various countermeasures have been prepared.

However, there is no method to properly block and monitor the use of obscene video information or programs in reality, and development of a device having a function of blocking an obscene screen according to the congestion of increasingly obscene video information or programs has been proposed. It is hoped.

An object of the present invention is to monitor the minors in contact with harmful image information, programs or Internet web sites from time to time, and to store information on the output of the harmful screen so that parents can check.

Another object of the present invention is to block normal output of a screen when a harmful screen is output by a method such as image analysis or pre-registration of a program or an Internet web site.

Another object of the present invention is to allow administrators, such as parents, to scan the screen output information while monitoring the harmful screen output, so that such access is possible with a password.

Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

1 is a block diagram showing a preferred embodiment of the harmful screen blocking device of the display system according to the present invention.

2 is a plan view illustrating a keypad configured in the input device of the embodiment.

3 is a detailed block diagram of a switching device configured in the embodiment.

4 is an exemplary diagram of blocking output of a screen according to an embodiment.

5 is a flowchart illustrating the operation of the central processing unit constructed in the embodiment.

6 is a flowchart illustrating the operation of the signal monitoring unit configured in the embodiment.

7 is a flowchart illustrating a method of managing passwords in an embodiment.

The harmful screen blocking device of the display system according to the present invention comprises an image signal source for outputting predetermined image information, a display apparatus for displaying a predetermined screen as the image information, and a path in which the image information is transmitted to the display apparatus and the image. And screen blocking means for determining whether the information is harmful and recording data thereon.

The screen interrupting means may include a switching device for branching the video information output from the image signal source while interfacing to the display device, and predetermined screen information included in the video information branched from the switching device at an arbitrary resolution and color state. An input converter for converting the information into an image converter, an image memory for storing the screen converted by the input converter, controlling the operation of each part, and determining the harmfulness of the screen stored in the image memory and including information on the screen stored in the image memory and the harmfulness determination information. A central processing unit for recording the memory; a memory for storing information input from the central processing unit; and a main power supply unit for supplying operation power of each unit.

In addition, the CPU determines a hazard through an outline analysis and a color analysis of an object included in a screen stored in the image memory, and the hazard is classified by grade according to the degree, and the grade information for this determines the hazard. It is preferably configured to store in the memory as information.

The apparatus may further include an output converter configured to output a screen stored in the image memory to the display means through the switching device under the control of the central processing unit, wherein the central processing unit may include a screen that is harmful to the input converter, The screen may be output to the display apparatus via the image memory and the output converter, and the screen output from the output converter may be configured to black process a predetermined area.

In addition, the switching device includes a first switch, and selects screen information to be output to the display device, and outputs from any one of the image signal source or the output converter according to the switching state of the first switch The screen may be output to the display device.

The memory may be configured to manage the accumulated information by dividing the stored accumulated information according to a grade and sequentially deleting them as time passes, and by applying a different deletion ratio for each grade.

Meanwhile, display data channel (DDC) information is included in the image information. When a program registered in advance to the image supply source is driven or a connection to a pre-registered Uniform Resource Locator (URL) is made, the information about the image information is included in the DDC information. And a communication unit configured to set and output a monitoring program to receive and transmit the DDC information to the central processing unit, wherein the central processing unit determines the DDC information to drive or pre-register a program registered in advance. Once a connection is made to a given URL, it may be configured to record information about it in the memory.

Here, the time zone on / off function reserved for the monitoring program is further set so that when the image supply source is operated in addition to the reserved time zone, information about the same may be included in the DDC information and output.

And an output converter for outputting a screen stored in the image memory to a display means via the switching device under control of the central processing unit, wherein the central processing unit includes the input converter according to the DDC information. The screen may be selectively output to the display apparatus via an image memory and an output converter, and the screen output from the output converter may be configured to black process a predetermined area.

In addition, the switching device includes a second switch, the second switch is operated to determine the output direction of the DDC information output from the image source, the communication unit or the display device according to the switching state of the second switch Any one of the DDC information may be configured to be output.

The apparatus may further include a signal monitoring unit configured to check a connection state between the switching device and the image supply source and whether there is a transmitted signal, and determine an operation state of a non-connection or image supply source. The central processing unit may further include a signal monitoring unit. It may be configured to determine the abnormal connection and the abnormal operation state as the information input from the information and to record the information having a rating thereof in the memory.

In addition, the information about the abnormal connection and the abnormal operation state recorded in the memory may be configured to be deleted after the administrator's inquiry.

In addition, an auxiliary power supply unit is further connected to the signal monitoring unit, and the auxiliary power supply unit is charged by the power supplied from the main power supply unit, and operates when the power supply is stopped from the main power supply unit to the signal monitoring unit. It can be configured to supply power.

The signal monitoring unit checks the connection state between the image supply source and the switching device, counts the connection-free time when disconnected, and operates the system and the image signal source while the image supply source and the switching device are connected. Checks the operating state of the system and counts the power-off time when the image signal source is operated when the system is not operated, and transmits data on the disconnection time and power-off time to the CPU when the system is operated. Preferably configured.

In addition, the CPU may periodically or randomly check whether there is a harmfulness, and select and store data on the harmful screen among the checked screen information and store the data in the memory.

In the harmful screen blocking method of the display system according to the present invention, screen information included in image information transmitted from a predetermined image supply source to a predetermined display means is checked for a predetermined time, and the harmfulness of the screen is determined by the outline and color distribution of the screen information. A step of setting a rating for the screen, storing data including the screen information and the information on the rating in a memory, and if the screen information is determined to be harmful, black-displaying the output of the screen by displaying a predetermined area. .

The screen information may be checked at random or periodically.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

An embodiment of the present invention exemplifies the computer main body 10 as an image source and illustrates the monitor 12 as a display device. However, the present invention is not limited thereto, and various display devices such as televisions can be replaced, and various devices such as video tape recorders and compact disc players can be replaced.

In the embodiment, the screen blocker 5 is configured to be operated by the power supply of the main power supply unit 7 to monitor and block an image between the computer main body 10 and the monitor 12.

The switching device 14 is configured in the screen blocking device 5, and the switching device 14 selectively transmits the image information interfaced between the computer main body 10 and the monitor 12 to each component of the screen blocking device 5. Interface. Detailed configuration of the switching device 14 operated by the control of the central processing unit 22 will be described later with reference to FIG. The image information via the switching device 14 includes screen information for displaying a predetermined screen and DDC (Display data Channel) information for implementing a Plug & Play function.

The screen blocker 5 includes an input converter 16, an image memory 18, and an output converter 20, and screen information output from the switching device 14 passes through the input converter 16 to the image memory ( 18), the input converter 16 displays screens of various resolutions by the multi-sync function such as 1024 * 760, 800 * 600, and 640 * 480 inputted by the control of the CPU 22. Color conversion is stored in the image memory 18, the embodiment is set to store the screen in the image memory 18 with a resolution of 320 * 240 and 256 color, for reference, the Resolution and color can vary, and the screen can be saved in black and white.

In addition, the screen information stored in the image memory 18 is optionally compressed and stored in the memory 24 or output to the output converter 20 under the control of the central processing unit 22 as described below. 20 is connected to the monitor 12 via the switching device 14 a composite screen for blocking the normal output of the screen output to the monitor 12 under the control of the central processing unit 22 or a text screen for manipulation. Is configured to output. In this case, the text screen for operation is a screen displayed when an administrator such as a parent operates a key of the input device 26 to scan a screen stored in the memory 24 or change a password.

Then, the central processing unit 22 determines the grade of the data stored in the memory 24 and stores it together with the screen information and the time information. At this time, the rating is "No" or the power-off state of the screen cutout device 5 is "A" rating, very harmful screen information is "B" rating, and usually harmful screen information is "C" rating, and about the pre-registered program or URU. The screen output information may be classified into "D" grade, general information "E" grade, and other information into "F" grade.

The input device 26 for the manager's operation is provided with a keypad 40 as shown in FIG. 2, and the keypad 40 has a function key 42, a 1/2 manual key 44, and a 3/4 automatic key 46. ), 5/6 ◀ key (48), 7/8 ▶ key (50), and 9/0 modifier key.

On the other hand, the screen blocker 5 is configured with a signal monitoring unit 28 and the communication unit 29, the signal monitoring unit 28 is configured with an auxiliary power supply unit 30. The auxiliary power supply 30 is used to be charged by the power supplied from the main power supply (7). The signal monitoring unit 28 has a function of checking whether the computer main body 10 is connected to the switching device 14 or not, and whether there is a signal input or no signal from the computer main body 10, and the communication unit Reference numeral 29 has a function of inputting DDC information from the computer main body 10 and transferring the DDC information to the central processing unit 22.

In the above-described configuration, the switching device 14 is configured as shown in FIG. 3, and the switching device 14 includes switches 70 and 72 therein, and the switch 70 is connected to the computer main body 10 through the terminal a1. Or one of the screen information input from the output converter 20 connected through the terminal e1, and is output to the monitor 12 through the terminal b1, and the switch 72 is connected to the computer main body (via the terminal a2). 10) is configured to output the DDC information input from the terminal d2 or the terminal b2, i.e., the communication unit 29 or the monitor 12.

In addition, a line connected to the terminal a1 and a terminal connected to the terminal d1 are configured in parallel, an input converter 16 is connected to the terminal c1, and a signal monitoring unit 28 is connected to the terminal d1. The control signals are input to the switches 70 and 72 through the terminal f1 and the terminal f2 from the central processing unit 22.

The operation and effects of the embodiment according to the present invention configured as described above will be described.

The embodiment of the present invention provides a function of storing harmful screens and related information through periodic checks and random checks of image information output from the computer main body 10 to the monitor 12, on / off monitoring of a reserved time zone, and a pre-registered program. Drive monitoring or URL connection monitoring function, blocking of harmful screen output, monitoring of connection or signal output status of the computer main body 10, password management function and administrator's stored screen and information scanning function are included. .

First, the central processing unit 22 generates a control signal at irregular intervals for storing harmful screens and related information through random checks. When the central processing unit 22 generates an irregular control signal, the input converter 16 converts the resolution and color of the screen input through the terminal c1 of the switching device 14 and stores it in the image memory 18 and stores the image. The screen information stored in the memory 18 is read by the central processing unit 22 and then compressed and stored at the assigned address of the memory 24 as the time information. At this time, the central processing unit 22 analyzes the screen information and determines the hazard level according to the "B", "C" or "E", and stores the data in the memory 24 including the data about it. As a result, all of the screen information that is randomly checked is ranked and stored in the memory 24 sequentially.

As described above, the input converter 16 converts screens of various resolutions, such as 1024 * 760, 800 * 600, and 640 * 480, into 320 * 240 and the color of 256 colors according to the mode set by the multi-sync function. Set and store in the image memory 18.

In addition, the central processing unit 22 periodically generates a control signal in order to store the harmful screen and its related information through periodic checks. The periodic check interval can be set in units of seconds, minutes or hours.

The central processing unit 22 generates a control signal to periodically check the screen output to the monitor 12, the screen information checked according to a certain period is selectively stored in the memory 24 in accordance with the harmfulness determination result.

That is, the screen in which the resolution and the color are converted is stored in the image memory 18 from the input converter 16, and the CPU 22 determines the harmfulness of the screen stored in the image memory 18 and sets the grade. The screen information and time and rating information are stored in the memory 24 when it is determined to be a very harmful class "B" or a harmful class "C", and when it is determined as a general information class "E", the checked screen is not stored.

Analysis of the screen information stored in the image memory 18 may be variously performed according to the intention of the producer.

First, an analysis is performed on whether an input image includes a nude image of a person. This is to determine the harmfulness by analyzing the outline of the image. Alternatively, the hazard may be determined by determining the distribution of a specific color. In general, in the case of an image including a nude of a person, the skin color of a person is widely distributed, and a harmful Internet website tends to prefer red color, so the harmfulness is judged by the distribution state of these colors. And, the aforementioned methods can be combined.

Meanwhile, in the embodiment, the on / off monitoring of the reserved time zone and the driving monitoring or URL connection monitoring function of a pre-registered program may be operated by setting a monitoring program in the computer main body 10. The monitoring program sets a time zone that allows the computer body 10 to be turned on to monitor the on / off state of the computer main body 10 accordingly, and also monitors the operation of harmful programs and access of harmful URLs.

This is done by setting a time zone that allows turn-on in advance to the monitoring program and registering harmful programs and URLs. When the time zone that is allowed to turn on is set from 6 pm to 10 pm, when the user turns on the computer outside of the time zone, the DDC information thereof is input from the computer main body 10 to the communication unit 29 via the switching device 14. The communication unit 29 transmits the information about the data to the central processing unit 22 and stores data in the memory 24 including the time and class "D" thereof.

When the program or the URL is checked by matching each program driven separately from each other and the registered program or URL is identical, the information about the program is input to the communication unit 29 through the switching device 14 as the DDC information, and the communication unit 29 is the center. Data is input to the processing unit 22, and the central processing unit 22 stores data in the memory 24 including the time and class "D" therefor.

On the other hand, the function of blocking the output of the harmful screen in the embodiment is that the screen determined to be harmful in the above-described function is output to the monitor 12 or the computer main body 10 outside of the scheduled time or the registered program drive or If there is a URL connection, the central processing unit 22 sets the switch 70 of the switching device 14 to output the screen of the output converter 20 input through the terminal e1, and the output converter 20 performs the central processing. Under the control of the device 22, a screen input via the input converter 16 and the image memory 18 is output in a state in which a portion 62 of the entire screen 60 is blackened as shown in FIG.

Then, in this case, the task bar 64 is located at the lower part of the Windows series, which is currently the generalized computer operating system, and the currently executed program is displayed and the start button 66 is displayed. Can click the start button 66 to shut down the computer.

In addition, the embodiment is provided with a monitoring function of the connection or signal output state of the computer main body 10, the screen information is input to the signal monitoring unit 28 through the terminal d1 of the switching device 14, the signal monitoring unit If the sync signal is not detected, the processor 28 determines that there is no connection or no signal state and inputs the information to the CPU 22, and the CPU 22 classifies the rating as "A" and then stores the memory. (24) stores information about it.

In addition, in the embodiment, a password management function and a stored screen and information scanning function of an administrator are provided, which will be described later with reference to FIGS. 7A and 7B.

The embodiment according to the present invention is operated by combining the above-described functions, and the sequential detailed control operation of the central processing unit 22 performing the above-described functions is shown in FIG. 5, and the sequential details of the signal monitoring unit 28 are provided. Operation is the same as FIG.

The central processing unit 22 first checks whether there is data in the signal monitoring unit 28, and if there is data transmitted from the signal monitoring unit 28, records the information about the data in the memory 24 (S2). At this time, when data on the power-off state of the connectionless or screen-blocking device 5 is transmitted, a grade "A" is assigned thereto and stored in the memory 24. In this case, the disconnection check and the check of the power-off state of the screen blocker 5 are performed as shown in FIG. 6, and the data is transmitted by the operation of the signal monitoring unit 28 described later, and the central processing unit 22 is Such data ?? Check the presence and write to the memory 24.

On the other hand, the central processing unit 22 checks the operating state of the computer main body 10 (S4) if the computer main body 10 does not operate, repeats step S2, and if the computer main body 10 is in the operating state communication unit ( 29) Check the presence or absence of data, and if there is data transmitted from the communication unit 29, information about it is recorded in the memory 24 (S6). At this time, the central processing unit 22 assigns the class "D" to the drive of the computer main body 10 outside the reserved time zone or the operation of the registered program or the registered URL connection, and transmits the data "D" to the memory 24. Store in

As a result of the above-described grade determination, it is determined whether the screen output to the monitor 12 is blocked (S8), and if the screen is not blocked, the key of the input device 26 is operated to check whether a key signal is input (S10).

If a key signal is input, the corresponding function is performed (S12), and step S2 is performed again. If it is determined in step S8 that the screen is blocked, the screen output is blocked by performing step S40. Blocking the output screen controls the central processing unit 22 to control the switch 70 of the switching device 14 so that the screen information passes through the input converter 16, the image memory 18, and the output converter 20. In this case, the screen output from the output converter 20 is output to the monitor 12, and a predetermined area of the screen is blacked in the output converter 20. As a result, a part of the screen displayed on the monitor 12 is blacked out so that the output of the normal screen is blocked.

If the input of the key signal is not checked in step S10, a screen check command is generated (S14). The screen check command may be periodically generated or randomly generated according to a predetermined setting in the central processing unit 22. When the screen check command is generated, it is checked whether it is a periodic occurrence or a random occurrence (S16).

In the case of periodic check-in, the CPU 22 stores screen information in the image memory 18 according to the above-described process (S18) and analyzes the stored screen (S20). As described above, the screen analysis is determined by the outline analysis or the color distribution, and as a result, if it is determined that it is not harmful (S22), step S2 is executed again. If it is determined that the screen is harmful as a result of the analysis (S22), the corresponding rating is set (S24), and the screen information, the time information, and the rating information stored in the image memory 18 are compressed and stored in the memory 24 (S26).

On the other hand, if it is determined that the screen check command is random (S16), the screen information is stored in the image memory 18 in accordance with the above-described process (S28) and after the screen is analyzed (S30) and the rating for the hazard is set (S30) S32) Screen information, time information, and grade information are compressed and stored in the memory 24 (S34).

After each of the above-described steps S26 and S34 is performed, the central processing unit 22 checks what the checked grade is (S36). The central processing unit 22 checks whether the screen is blocked (S38) when it is determined that the checked grades are "B" and "C" (S40) and blocks the screen output (S40).

In this case, the screen output is interrupted by setting the CPU 22 to output the screen output from the output converter 20 to the monitor 12 by the central processing unit 22 as described above.

If it is determined that the current screen is to be maintained (S42), and if it is determined that the output state of the current blocking screen is maintained, step S40 is repeated, and if the output of the current blocking screen may be released, step S2 is performed again.

As described above, the central processing unit 22 according to the present invention checks the data of the signal monitoring unit and the communication unit to determine the current time of disconnection or power-off of the screen blocker 5 or the reserved time through the communication unit 29. Determining whether to block the operation of the computer main body 10 or whether there is data for a pre-registered program or URL is determined first, and then the screen output to the monitor 12 is analyzed and as a result secondary or not Decide

On the other hand, the signal monitoring unit 28 performs the operation as shown in FIG.

The signal monitoring unit 28 first checks the connection state. That is, it is first checked whether the computer main body 10 is connected to the switching device 14 by the connection resistance of the connector, and if it is determined that it is not connected (S100), it is determined whether or not it was previously connected (S104). If it is not currently disconnected and was not previously disconnected, it is determined to be in a normal connection state and checks the operation of the system (S110). If it is not currently disconnected and is previously disconnected, it is determined that it is returned from an abnormal connection state to a normal connection state. After recording and clearing the connectionless count value (S106), the operation of the system is checked (S110).

On the other hand, if it is determined that there is no connection currently in step S100, it is determined whether there has been no connection before (S102). As a result of the determination, if there was no connection before, it is determined that the abnormal connection has been started, and the connectionless count is started (S108), and step S130 is performed to check whether the system is in operation. If no connection has been made before in step S102, it is determined that the abnormal connection is continued, and step S130 is performed to perform step S130.

Then, the signal monitoring unit 28 confirms that the connection through the steps S100, S104, S106 and then confirms the operating state of the system, that is, the screen blocker (5) (S110) and confirms the operating state of the computer main body 10. (S112).

If it is determined that the system is in operation or that both the system and the computer main body are not in operation through steps S110 and S112, it is determined as normal operation. Therefore, as described above, if it is determined that the normal operation is the power-off count value is "0", and if the power-off count value is "0", the step S130 is simply performed since it was a normal operation state before. If the power off count value is not "0", it is determined that the operation state was abnormal, and the power off count value is recorded and cleared (S122), and then step S130 is performed.

If it is determined in step S110 that the system is not in operation and it is determined in step S112 that the computer main body 10 is in operation, it is determined to be in an abnormal state. When the power off count value is determined to be abnormal, the power off count value is checked (S116). If the power off count value is not "0", the power off count value is determined to have been abnormal before, and the power off count value which is currently counted is continuously counted, and the power off is performed. If the count value is "0", the power off count is started since it was a normal state (S118).

After the above-described steps S120, S122, 116, and 118 are performed, it is checked whether the system is operating again (S130). If the system is in operation, the above-described recorded data is transmitted to the central processing unit 22 of the system (S134). If the system is not in operation, the processor waits for a predetermined time (S132) and then performs step S2 again.

In the above-described operation, the signal monitoring unit 28 records data about no connection or abnormal connection, and transmits the data to the central processing unit 22. The central processing unit 22 then stores these data in the memory 24 by dividing them into "A" grades.

As described above, the data stored in the memory 24 may be managed by grades to improve the utilization of the memory 24 having a limited size.

For example, the data of the "A" grade is managed to be deleted only when the administrator inquires, and the data of the "B", "C", "D", and "E" grades may be set differently. Specifically, when eight "E" grade data are deleted, four "C" grade data may be deleted and two "B" grade data may be set to be deleted, and "D" grade data may be set to "B" or "C". "Can be set according to the grade. The above-mentioned data of "B", "C", "D", and "E" are sequentially deleted as time passes, and the data of "A" grade can be deleted only by the inquiry and deletion process of the administrator. Do. Of course, this is exemplified as an embodiment and it is obvious that the management method of data may be set differently according to the intention of the producer.

On the other hand, the method of confirming the data stored in the memory 24 and the secret number management method by the above-described method will be described with reference to Figs. 7A and 7B.

First, scanning for password management and data confirmation is possible by manipulating the respective keys of the keypad 40 of the input device 26.

The central processing unit 22 always checks whether a key signal is input from the input unit 26, and the key signal controls the operation of the central processing unit 22 as an interrupt signal.

In order to change the password or scan the stored data, first, the function key 42 is selected. If the function key 42 is confirmed by selection (S210), it is again checked whether the function key 42 is selected (S212), and a password input is required. If the function key 42 is selected again, it means release of the current mode and the process returns to step S210. That is, in the mode of changing the password or scanning the stored data, the password input is required when the function key 42 is selected once (S214). At this time, when the function key 42 is pressed once, a text screen for inputting a password is output, and the text screen is stored in the memory 24 through the output converter 20 under the control of the central processing unit 22. Displayed by being output, the switch 70 of the switching device 14 is set to output the screen output from the output converter 20 to the monitor 12.

That is, the output converter 20 outputs a predetermined screen requesting input of a password under the control of the central processing unit 22, and displays a screen including the message " Please enter the password "

If the password is entered (S214), and if the password is matched (S216), if the password does not match, the wrong input count is accumulated (S218) and the incorrect input count is checked three times or less (S220). If the incorrect input count is 3 or less times, step S212 is repeated to request input of the password again. If the incorrect input count is not 3 or less (S222), a random code is displayed after waiting for a predetermined time (S224). The random code is randomly generated as a machine code, and the master password allowing access to the random code is a one-time use, managed and notified by the manufacturer. In other words, the master password can be verified by the administrator by phone inquiry to the manufacturer and can be used only once.

After the random code is displayed (S224), it is checked whether the function key 42 is selected (S226), and when the function key 42 is selected, the CPU 22 determines that it is in the interrupted state, releases the current mode, and returns. . When the one-time master password or the existing password for the random code is input without selecting the function key in step S226 (S228), it is determined whether the input master password or the existing password is correct (S230).

If it is determined that the master password or the existing password is incorrect (S230) and accumulates the wrong input count (S232), and after confirming 3 or less (S234), if it is 3 or less, execute step S226 again and if not 3 or less, step S222. Perform.

If it is determined that the password input in step S216 matches that of the set password, that is, if the correct password is input, after confirming that the function key or the change key is selected during steps S242 and S244, the 1/2 manual key 44 or 3/4 is selected. The automatic / manual selection step S246 is performed as the automatic key 46 is selected.

If it is determined that the master password or the existing password input in step S230 matches, it is determined whether the currently input password is the master password (S236), and if the master password is input of a password for a new setting (S238). According to the password to be set a new password (S240). If a function key is input in this process (S242) and the 9/0 change key 52 is selected (S244), step S238 is performed again to reset the password.

On the other hand, after going through step S242 and step S244, if the administrator selects the 1/2 auto key 44 in step S246 in step S246, after checking in step S248 whether the selection of the function key 42 continues, and then through step S250 The stored screen is sequentially displayed by performing step S254. In the process of sequentially displaying the stored screens, if the function key 42 is selected by repeating the steps of S248 and S250, the function key 42 is returned.

When the administrator selects the 3/4 manual key 46 in step S246, the screen is moved according to the manager's key after performing steps S248 and S250 and performing step S252. Specifically, when the administrator selects the 5/6 ◀ key 48, the screen is displayed in the reverse order stored in the memory 24. If the 7/8 ▶ key 50 is selected, the screen is displayed in the forward order stored in the memory 24. Display it.

In the above-described process, the input of the password is based on the predetermined digits: 1/2 manual key 44, 3/4 auto key 46, 5/6 ◀ key 48, 7/8 ▶ key 50, and 9 / 0 may be sequentially input and set according to the operation of the change key 52.

That is, when an administrator such as a parent presses the function key 42, the central processing unit 22 reads the most recent image stored in the memory 24, and monitors the monitor (through the output converter 20 and the switching device 14). 12), and information such as a storage time for the currently output image is output as character information. In addition, information on a program or Internet web site determined to be harmful, its running time and access time is also output as text information. In addition to the computer usage time set by the administrator, information on the computer usage may also be queried.

The parent may take appropriate action (eg, discontinue or warn the use of the computer) of the user of the computer body 10 depending on the identified result.

In addition, an embodiment according to the present invention is managed by a password, and the password may be determined by a predetermined number (for example, four digits) in which numbers are combined, and when the password is changed, a history thereof is stored in the storage memory 24. do. And, when the parent operates the embodiment to confirm the information is output along with the other display information, the parent can check the number of password changes, etc. accordingly, it can be prevented that the password is changed by impure intention .

The central processing unit 22 has a function of automatically generating a mechanical password when a password is incorrectly input three or more times.

Specifically, if the original password is '1234' but fail to enter the password more than three times, the central processing unit 22 generates a mechanical password ABCD. Then, the user contacts the manufacturer and notifies the mechanical password ABCD, and the manufacturer notifies the one-time master password '2345' corresponding to the mechanical password ABCD. Then, the user inputs the one-time master password '2345', and after setting the master password, a prompt password is required. When the user enters '5678', '5678' is registered as a new password. At this time, the number of password changes and the time are automatically stored in the storage memory.

As described in detail above, the present invention has been described in detail with respect to preferred embodiments, but those skilled in the art to which the present invention pertains, various embodiments of the present invention without departing from the spirit and scope of the present invention It will be appreciated that the present invention may be modified or modified as described above.

Therefore, according to the present invention, the display of the screen is blocked by monitoring or blocking the display of harmful images periodically or randomly, and the running of a pre-registered program or accessing an Internet website, thereby blocking the display of the screen. This can be regulated.

In addition, the information on the connection status and password management of the device is stored, and the display of the image is blocked as necessary, and when the harmful image is accessed, information related to the harmful image is recorded and can be viewed by the administrator.

This complex feature allows you to check the status of your computer's use, effectively preventing minors from accessing harmful screens, programs, or websites.

Claims (18)

An image signal source for outputting predetermined image information; A display device displaying a predetermined screen as the image information; And screen blocking means configured to determine the harmfulness of the image information and to record data thereon, wherein the image information is configured to be transmitted to the display device. The method of claim 1, wherein the screen blocking means, A switching device for branching while interfacing the image information output from the image signal source to the display device; An input converter for converting predetermined screen information included in the image information branched from the switching device into an arbitrary resolution and color state; An image memory for storing the screen converted by the input converter; A central processing unit controlling the operation of each unit and determining the harmfulness of the screen stored in the image memory and recording information including the screen stored in the image memory and the harmfulness determination information; A memory for storing information input from the central processing unit; And a main power supply unit for supplying the operation power of each unit. The method of claim 2, The CPU determines a hazard through an outline analysis and a color analysis of an object included in a screen stored in the image memory, and the hazard is classified according to a grade, and the grade information is determined as the hazard determination information. The harmful screen blocking device of the display system, characterized in that stored in the memory. The method of claim 3, wherein And an output converter for outputting the screen stored in the image memory to the display means via the switching device under control of the central processing unit, wherein the central processing unit is configured to display a harmful screen into the input converter, the image memory, and the like. And a screen output from the output converter, wherein the screen output from the output converter is configured such that a predetermined area is blacked out. The method of claim 4, wherein The switching device includes a first switch, and operates to select screen information to be output to the display device, the screen output from any one of the image signal source or the output converter according to the switching state of the first switch. The harmful screen blocking device of the display system, characterized in that configured to be output to the display device. The method of claim 3, wherein The memory may be configured to delete the accumulated information stored by grade and sequentially delete the stored information as time passes, and to manage the accumulated information by differently applying the deletion ratio for each grade. The method of claim 2, Display data channel (DDC) information is included in the image information, and when a program registered in advance to the image supply source is driven or a connection to a pre-registered Uniform Resource Locator (URL) is made, the information is included in the DDC information. A communication unit for setting an output monitoring program and receiving the DDC information and transmitting the received DDC information to the central processing unit is further configured. The central processing unit determines that the DDC information is used to drive a pre-registered program or to pre-register a URL. The harmful screen blocking device of the display system, characterized in that configured to record information about it in the memory when the connection is made. The method of claim 7, wherein And a time zone on / off function reserved for the monitoring program is set so that when the image supply source is operated in addition to the reserved time zone, information about the output is included in the DDC information and outputted. The method according to claim 7 or 8, An output converter for outputting a screen stored in the image memory to the display means via the switching device under control of the central processing unit, wherein the switching device comprises a second switch, The central processing unit selectively outputs a screen to the display apparatus via the input converter, the image memory and an output converter according to the DDC information, and the screen output from the output converter is black-processed in a predetermined area; The second switch is operated to determine an output direction of the DDC information output from the image supply source, and configured to output the DDC information to either the communication unit or the display device according to the switching state of the second switch. Harmful screen blocker of display system. The method of claim 2, A signal monitoring unit is further configured to determine the connection state between the switching device and the image supply source and the presence of a transmitted signal to determine a non-connection or operation state of the image supply source, wherein the central processing unit includes information input from the signal monitoring unit. And determining an abnormal connection and abnormal operation state and recording the information having a grade thereof into the memory. The method of claim 10, wherein the signal monitoring unit, Checking a connection state of the image supply source and the switching device and counting a disconnection time when disconnected; Checking the operation of the system and the operation state of the image signal source while the image supply source and the switching device are connected to count the power off time when the image signal source is operated when the system is not operated; And the system is configured to transmit data on the disconnection time and the power off time to the CPU when the system is operated. The method of claim 2, The central processing unit periodically checks whether there is a harmfulness, harmful screen blocking device of the display system, characterized in that configured to select and store the data on the harmful screen of the checked screen information in the memory. The method of claim 2, And the central processing unit randomly checks for harmfulness and stores all checked screen information in the memory. The method of claim 2, An input device having a plurality of keys including a function key for setting and releasing a mode, a key for scanning while moving a screen, a key for selecting an auto scan or manual scan, and a key for inputting a password in the central processing unit. Is further configured, and a screen is stored in the memory by inputting a password by sequentially operating keys of the input device. When the password is incorrectly input for a predetermined number of times, a random code is generated and corresponds to a random code. Harmful screen blocking device of the display system, characterized in that configured to enable the inquiry after confirming the input of the one-time master password or the existing password. Checking screen information included in image information transmitted from a predetermined image supply source to a predetermined display means for a predetermined time, determining harmfulness of the screen using an outline and color distribution of the screen information, and setting a grade thereof; Storing data including the screen information and the information on the grade in a memory; and And if the screen information is determined to be harmful, displaying the screen output by blacking a predetermined area. The method of claim 15, The screen information blocking method of the display system, characterized in that the check is made periodically. The method of claim 15, The screen information blocking method of the display system, characterized in that the random check of the screen information. The method according to claim 16 or 17, And only screen information, which is rated as harmful among the screen information, is recorded in the memory.