KR102453722B1 - Apparatus and method for decressing power comsumption of monitor - Google Patents

Abstract

The present invention relates to a device and method for decreasing power consumption of a monitor, which can analyze an execution program by a monitor itself, can reduce power consumption of the monitor by gradually reducing the brightness of the monitor according to the type of the analyzed execution program. The present invention reduces power consumption of the monitor by gradually reducing the brightness of the monitor by a target brightness when there is no movement (or change amount) on the monitor within a reference time while the monitor is displayed on a screen, and the present invention reduces the power consumption of the monitor by gradually reducing the brightness of the monitor by the target brightness, when screen movement occurs on the monitor and the execution program is a video.

Description

Apparatus and method for reducing monitor power consumption

The present invention relates to a technology for reducing power consumption of a monitor, and in particular, monitor power consumption that can reduce the power consumption of the monitor by analyzing an execution program by the monitor itself, and gradually reducing the brightness of the monitor according to the type of the analyzed execution program It relates to an abatement apparatus and method.

In general, a computer includes an input device such as a keyboard and a mouse, a main body for performing calculation and control operations, and a monitor as a display device for displaying information.

Although the main body saves power consumption through various power saving modes such as software power saving mode and hardware power saving mode, the monitor operates in screen saver mode according to control commands generated from the body or performs power saving functions according to power saving control commands. Only passive power saving is possible.

Here, in order to cut off the power of the monitor, a method of controlling the standby power of the monitor by sensing a signal such as a video signal or an output of a power supply device, standby based on a signal output from an external device (eg, computer body) Power saving is achieved by controlling the standby power of the monitor by controlling the power.

On the other hand, as an example of various studies for standby power control, the following <Patent Document 1> to <Patent Document 3> disclose a conventional technique for reducing standby power of a computer monitor.

The prior art disclosed in <Patent Document 1> analyzes the power output status of the power supply device (SMPS), detects the internal state of the power, and controls the inside of the power according to the set information. provides

In addition, in the prior art disclosed in <Patent Document 2>, through a configuration in which a detection module for detecting a signal for determining a power saving mode is installed double, the control unit more accurately determines the off mode to detect maximum power saving of the power supply and prevent malfunction to implement

In addition, the prior art disclosed in <Patent Document 3> includes a screen capture unit that captures a screen, a screen change analyzer that analyzes changes in a screen, an input device that receives a user's manipulation signal, a screen change analysis result and an input signal, and It includes a power saving control unit that controls power saving of the computer body and the display based on the set power saving mode, and controls power saving based on the screen change rate after screen capture.

However, in the general monitor power saving method and prior art as described above, it is possible to implement power saving by controlling the LED of the monitor to lower the brightness of the screen during power saving control, but implementing power saving by the monitor itself while using the main body is difficult. It has a difficult drawback.

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Republic of Korea Patent Registration 10-1443316 (Registered on September 16, 2014) Republic of Korea Patent Registration 10-1568637 (Registered on Nov. 5, 2015) Republic of Korea Patent Publication 10-2017-0017282 (published on February 15, 2017)

The present invention is proposed in order to overcome the limitations of the general monitor power saving method as described above and to solve various problems occurring in the prior art. An object of the present invention is to provide an apparatus and method for reducing power consumption of a monitor capable of reducing power consumption of the monitor by stepwise reduction.

Another object of the present invention is to automatically reduce the power consumption of the monitor by adjusting the brightness of the monitor according to the movement (or amount of change) within the reference time on the monitor itself, separate from the computer body, and a monitor power consumption reduction apparatus and method is to provide

Another object of the present invention is to control the brightness of the monitor in stages according to the movement (or amount of change) on the monitor so that the user does not feel visual discomfort while automatically reducing the power consumption of the monitor. to provide a way

Another object of the present invention is to provide an apparatus and method for reducing monitor power consumption that can provide an environment (customizing service) suitable for a user by allowing a reduction rate and time for monitor brightness to be set by a user.

In order to achieve the above object, "monitor power consumption reduction device" according to the present invention,

a video detection unit for monitoring the monitor screen to detect whether the execution program is a video;

a motion detection unit for monitoring the monitor screen and outputting an event generation signal when there is no motion;

When a video detection signal is generated from the video detection unit or an event generation signal is output from the motion detection unit, the monitor screen brightness is adjusted in stages by controlling the power of the backlight board to a preset monitor screen brightness control value in response to the video or event generation signal. a brightness control unit to reduce power consumption by lowering it to ; and

A setting unit for providing monitor brightness setting information to the brightness control unit may be included.

In the above video detection unit,

It is characterized in that it is detected whether the execution program displayed on the screen is a moving picture based on the variation in the white ratio of the screen, and when the white ratio is greater than or equal to a set reference variation, the execution program is detected as a moving picture.

In the above setting,

It is characterized in that the target brightness and the screen brightness adjustment time to reduce the monitor screen brightness step by step are set differently according to the case where the program executed on the screen is a moving picture and the case where an event occurrence signal is generated.

In the above, the brightness control unit,

When a program running on the screen is detected as a moving picture, the current brightness is reduced to 30% to reduce power consumption.

In the above, the brightness control unit,

It is characterized in that power consumption is reduced by controlling the power of the backlight board in both situations in which the information displayed on the screen is changed when the program is executed or the information displayed on the screen is not changed because the program is in a standby state.

In the above motion detection unit,

Monitor the monitor screen to check the cursor movement, output an event signal if there is no cursor movement during the reference time, or monitor the monitor screen to check whether the color of the screen changes, and generate an event if there is no color change for the reference time It is characterized in that it outputs a signal.

In addition, the monitor power consumption reduction method according to the present invention,

(a) setting a monitor screen brightness control value in the setting unit;

(b) determining whether there is no movement on the monitor screen for a reference time in the motion detection unit, and outputting an event generation signal when it is determined that there is no movement;

(c) reducing the power consumption by controlling the power of the backlight board based on the power control signal for stepwise reducing the monitor screen brightness when the brightness control unit receives the event occurrence signal to lower the monitor screen brightness;

(d) detecting whether the execution program is a moving picture by monitoring the monitor screen in the moving picture detection unit; and

(e) when the brightness control unit detects a moving picture in step (c), control the power of the backlight board based on the power control signal for step-by-step reduction of the monitor screen brightness to reduce the monitor screen brightness to reduce power consumption It is characterized in that it comprises a step.

In the above step (b),

Monitor the monitor screen to check the cursor movement, output an event signal if there is no cursor movement during the reference time, or monitor the monitor screen to check whether the color of the screen changes, and generate an event if there is no color change for the reference time It is characterized in that it outputs a signal.

In the above step (d),

It is characterized in that it is detected whether the execution program displayed on the screen is a moving picture based on the variation in the white ratio of the screen, and when the white ratio is greater than or equal to a set reference variation, the execution program is detected as a moving picture.

According to the present invention, there is an effect that power consumption can be reduced by automatically controlling the backlight brightness by analyzing the screen on the monitor by the monitor itself separately from the computer body.

In addition, according to the present invention, it is possible to control the brightness of the monitor in a situation where the running program is a moving picture or there is no movement (or change amount) within the reference time, thereby reducing power consumption when the moving picture program is running or the program is in standby state. There is an effect that can be done.

In addition, according to the present invention, it is possible to provide an optimal monitor environment (customizing service) suitable for the user by allowing the user to freely set the target brightness for the monitor brightness and the time to adjust the monitor brightness.

1 is an exemplary view of a computer system including a monitor to which a monitor power consumption reduction device according to an embodiment of the present invention is applied;
2 is a block diagram of an apparatus for reducing power consumption of a monitor according to an embodiment of the present invention;
3 is a flowchart showing a method for reducing power consumption of a monitor according to an embodiment of the present invention;
4 is a power consumption measurement result table according to brightness control when running a video on the monitor;
5 is a table of power consumption measurement results according to brightness control when running a video on a desktop monitor.

Hereinafter, an apparatus and method for reducing power consumption of a monitor according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in the present invention described below should not be construed as being limited to conventional or dictionary meanings, and the inventor may appropriately define the concept of terms in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents and It should be understood that there may be variations.

1 is an exemplary view of a computer system including a monitor to which a monitor power consumption reduction device according to a preferred embodiment of the present invention is applied, a monitor 1, a main body 2, an input device mouse 3 and a keyboard 4 ) may be included.

The main body 2 is a computer main body, and performs calculation and control operations according to the input of the mouse 3 or keyboard 4, which is an input device, and displays calculation results, search results, processing results, etc. through the monitor 1 . does it The main body 2 performs a power saving function according to a preset power saving mode in the same way as implementing a power saving function in a normal computer body, and when the power saving function is performed, it transmits a power saving command to the monitor 1 to realize monitor power saving. can

The monitor 1 may display an image through the display panel 130 based on the image data from the main body 2 .

FIG. 2 shows a configuration of a monitor power consumption reduction device 110 provided in the monitor 1 to reduce power consumption and a general configuration of a monitor related thereto.

Here, the image controller 140 processes the display image transmitted from the main body to display it through the display panel 130 , and the backlight board 120 serves to adjust the screen brightness of the display panel 130 .

The image control unit 140 , the backlight board 120 , and the display panel 130 are technical components generally implemented in an existing monitor.

The power consumption reduction device 110 monitors the monitor screen and controls the brightness of the monitor screen according to motion (or amount of change) on the monitor screen or detection of a moving picture, thereby reducing power consumption of the monitor 1 itself.

The power consumption reduction device 110 includes a video detection unit 111 that monitors a monitor screen to detect whether an execution program is a video, a motion detection unit 112 that monitors the monitor screen and outputs an event generation signal when there is no movement, When a video detection signal is generated from the video detection unit 111 or an event generation signal is output from the motion detection unit 112, the power of the backlight board is controlled with a preset monitor screen brightness control value corresponding to the video or event generation signal. and a brightness control unit 114 for reducing power consumption by stepwise lowering the monitor screen brightness, and a setting unit 113 for providing monitor brightness setting information to the brightness control unit 114 .

3 is a flowchart illustrating a method for reducing power consumption of a monitor according to the present invention. Steps (S102 - S103) of outputting an event generation signal when the detection unit 112 determines whether there is no movement on the monitor screen for a reference time and determines that there is no movement (S102 - S103), (c) Event generation in the brightness control unit 114 When the signal is received, the power consumption is reduced by controlling the power of the backlight board based on the power control signal for stepwise reducing the monitor screen brightness (S104), (d) in the video detection unit 111 Steps (S105 - S106) of monitoring the monitor screen to detect whether the running program is a moving picture, (e) when the brightness control unit 114 detects a moving picture in the step (d), for stepwise reducing the monitor screen brightness Controlling the power of the backlight board 120 based on the power control signal to reduce the brightness of the monitor screen to reduce power consumption (S107), (f) the screen movement occurs during a reference time in the brightness control unit 114 or When the execution program is not a moving picture, it may include a step (S108) of restoring the brightness of the monitor screen to the screen brightness before the screen brightness adjustment.

In step (b), the monitor screen is monitored to check the cursor movement, and if there is no cursor movement for the reference time, an event occurrence signal is output, or the monitor screen is monitored to check whether the color of the screen changes, and during the reference time If there is no color change, an event occurrence signal can be output.

In addition, in step (d), it is detected whether the execution program displayed on the screen is a moving picture based on the change width of the white ratio of the screen, but when the white ratio is greater than or equal to the set reference change width, the execution program may be detected as a moving image.

The monitor power consumption reduction apparatus and method according to the present invention configured as described above will be described in detail as follows.

First, the user can set a screen brightness control value (target brightness, screen brightness adjustment time) for reducing power consumption by reducing screen brightness when there is no movement of the screen or when the running program is a video through the setting unit 113 ( S101).

After the screen brightness control value is set, the screen brightness is controlled with the currently set screen brightness control value unless the user sets or resets the screen brightness control value. If the user does not set the screen brightness control value, it is assumed that the monitor manufacturer initially sets the screen brightness control value to reduce power consumption.

When the user sets the screen brightness control value, the user through the setting unit 113, the target brightness for reducing the monitor screen brightness step by step according to the case in which the program executed on the screen is a moving picture and when an event occurrence signal occurs. and screen brightness adjustment time can be set. Here, when it is assumed that the current display brightness is 100%, the target brightness is the screen brightness to be reduced, and may be set as a ratio such as 90%, 80%, 70%, or the like. The screen brightness adjustment time refers to the time taken to reduce the screen brightness to 30% when the target brightness set at 100%, which is the current screen brightness, is 70%. That is, within the screen brightness adjustment time, the screen brightness gradually decreases (darks) from 100% to 70%. In the present invention, the screen brightness adjustment time is set to 3 seconds, but the present invention is not limited thereto.

The screen brightness control value may be set the same as in the case of a video or an event occurrence signal, or may be set differently.

The setting unit 113 may receive a user's key or button operation, and may receive a target brightness adjustment time and a screen brightness adjustment time corresponding thereto, and transmit the target brightness adjustment time and the screen brightness adjustment time to the brightness control unit 114 .

In a state in which the target brightness and the screen brightness adjustment time for reducing power consumption are set as described above, the brightness control unit 114 receives an event generation signal according to the motion detection from the motion detection unit 112, and the screen brightness compared to the current brightness. It is possible to reduce power consumption by reducing the brightness by the preset target brightness.

That is, the brightness control unit 114 prioritizes the event generation signal of the motion detection unit 112 and, upon receiving the event generation signal, reduces the screen brightness by the set target brightness through backlight power control as described above to reduce power consumption. save

The motion detection unit 112 monitors the monitor screen to check the movement of the cursor, and if there is no movement of the cursor for a reference time, it outputs an event occurrence signal to the brightness control unit 114, or monitors the monitor screen to change the color of the screen. It is checked whether there is a change, and if there is no color change for the reference time, an event occurrence signal is output to the brightness control unit 114 (S102 - S103).

Here, the motion detection unit 112 may check the change in the luminance of the monitor screen (detect the change in luminance), determine that there is no movement of the cursor if there is no change in the luminance, and output an event generation signal.

In addition, the motion detection unit 112 may monitor the monitor screen to check whether the color of the screen changes (detecting the amount of color change), and output an event generation signal if the color of the screen does not change.

That is, the motion detection unit 111 monitors the monitor screen to determine whether the color of the monitor screen changes, and if there is no color change for the reference time, outputs an event occurrence signal, but at a certain rate (ex, 10%, etc.) When the above color changes, it may be determined that there is a color change.

Here, when the motion detecting unit 111 detects a motion on the monitor screen within a reference time, it may output a default signal to the brightness control unit 113 or may not output any signal.

The brightness control unit 114 outputs a backlight power control signal to the backlight board 120 to reduce the screen brightness stepwise (or sequentially) when an event generation signal is transmitted from the motion detection unit 112 to the backlight board ( By controlling the power of the 120), it is possible to reduce the power consumption of the monitor 1 by adjusting the screen brightness (S104).

For example, the brightness control unit 114 is a backlight for gradually reducing the screen brightness according to the target brightness and the screen brightness adjustment time preset in the memory in order to reduce the power consumption of the monitor in response to the event occurrence signal from the setting unit 113 or the manufacturer. The power of the backlight board 120 may be controlled by outputting a power control signal to the backlight board 120 .

For example, the brightness controller 114 may output a backlight power control signal for gradually reducing the screen brightness from the current brightness to the target brightness during the set screen brightness adjustment time.

For example, when the current screen brightness is 100%, the target brightness is set to 60%, and the screen brightness adjustment time is set to 3 seconds, the brightness control unit 114 reduces the screen brightness step by step to 70% over 3 seconds It is possible to output a power control signal for For example, the brightness control unit 114 may output a backlight power control signal to reduce the screen brightness in stages, such as 90%, 80%, 70%, or 60% over 3 seconds, and is limited thereto. not. The reason for linearly adjusting the screen brightness step by step here is to allow the user's eyes to naturally adapt to the brightness change without causing inconvenience to the user or a problem that may cause visual deterioration when the screen brightness changes suddenly. is to do

The backlight board 120 provides brightness according to image data from the image control unit 140 to the display panel 130 , and when receiving a backlight power control signal from the brightness control unit 114 , the screen responds to the backlight power control signal The power consumption of the monitor 1 can be reduced by controlling the backlight power to lower the brightness and providing the backlight light with the screen brightness lowered to the display panel 130 .

For example, the backlight board 120 may reduce the screen brightness in stages (or sequentially) in response to the backlight power control signal from the brightness control unit 114 to provide it to the display panel 130 .

In addition, in a situation in which an event occurrence signal is not received from the motion detection unit 112 , the brightness control unit 114 is a backlight for reducing screen brightness stepwise (or sequentially) when a moving image is detected through the moving image detection unit 111 . By outputting a power control signal to the backlight board 120 to control the power of the backlight board 120 , the power consumption of the monitor 1 can be reduced by adjusting screen brightness.

That is, when power is supplied to the monitor 1 and data input from the body or externally through the image control unit 140 is displayed on the screen through the display panel 130 , the moving image detection unit 111 determines whether the running program is a moving image. detection (S105 - S106).

Here, the video detection unit 111 operates in conjunction with the motion detection unit 112 when there is no event generation signal. This is to prevent unnecessary power consumption from being wasted by the simultaneous operation of the two components by giving priority to the event occurrence signal of the motion detection unit 112 and detecting the video only in a situation where there is no event occurrence signal. .

For example, the video detection unit 111 detects whether the execution program displayed on the screen is a video by the change in the white ratio (0 to 255) of the screen using the video detection program, but the reference change in the white ratio is set (for example, , 50) or higher, the execution program may detect a moving picture.

For example, the range of change in the white ratio of the screen is checked for each sampling period (for example, in units of 0.5 seconds or 1 second), and after accumulating the range of changes in the checked white ratio a plurality of times, the average value is calculated to determine the white ratio of the screen. It is used as a value for determining the range of change.

In other words, as a method of determining whether an execution program is a moving picture, the range of change in the screen white ratio is detected a predetermined number of times for each sampling period, the detected white ratio change width is accumulated a predetermined number of times, and the average value is calculated to determine the change width of the white ratio of the screen use as a value.

The method of determining the variation in the white ratio of the screen is performed until the screen is turned off while the monitor is powered on and the screen is turned on.

In the present invention, the reference change width set for detecting (determining) whether the execution program is a moving picture is set to 50. There is almost no change in the white ratio during typing in a document program, and an instantaneous change of less than 20 occurs when scrolling, etc., but this is a category that can be ignored in a video detection program. When the execution program is a moving picture, a white ratio variation of 50 or more continuously occurs, so a reference variation for determining a moving picture is set to 50 based on this.

The video detection unit 112 transmits a video detection signal to the brightness controller 114 when the execution program is detected as a video.

According to an embodiment, when a video detection signal is received, the brightness control unit 114 controls the screen according to a preset target brightness and a screen brightness adjustment time to reduce power consumption of the monitor when the video is executed by the setting unit 113 or an initial manufacturer. By outputting a backlight power control signal for reducing the brightness in stages to the backlight board 120, the power of the backlight board 120 can be controlled (S107).

For example, the brightness controller 114 may output a backlight power control signal for gradually reducing the screen brightness from the current brightness to the target brightness during the set screen brightness adjustment time.

For example, if the current screen brightness is 100%, the target brightness is set to 60%, and the screen brightness adjustment time is set to 3 seconds, the brightness control unit 114 reduces the screen brightness step by step to 60% over 3 seconds It is possible to output a backlight power control signal for For example, the brightness control unit 114 may output a backlight power control signal to reduce the screen brightness in stages, such as 90%, 80%, 70%, or 60% over 3 seconds, and is limited thereto. not. The reason for linearly adjusting the screen brightness step by step here is that the user's eyes can naturally adapt to the brightness change without causing a problem that may cause the user to feel uncomfortable or cause vision deterioration when the screen brightness changes abruptly. in order to make it

The backlight board 120 provides brightness according to image data from the image control unit 140 to the display panel 130 , and when receiving a backlight power control signal from the brightness control unit 114 , the screen responds to the backlight power control signal The power consumption of the monitor 1 can be reduced by controlling the backlight power to lower the brightness and providing the backlight light to the display panel 130 .

For example, the backlight board 120 may reduce the screen brightness in stages (or sequentially) in response to the backlight power control signal from the brightness control unit 114 to provide it to the display panel 130 .

For example, in response to the backlight power control signal from the brightness controller 114 , the backlight board 120 may gradually lower the screen brightness from the current brightness of the screen to the target brightness over a predetermined time.

In addition, when the backlight power control signal is not received from the brightness control unit 113 , the backlight board 120 may maintain the screen brightness at an initial state of 100%. In addition, the backlight board 120 may restore the screen brightness to 100% when the backlight power control signal is not received in a state in which the power consumption is reduced by reducing the screen brightness according to the backlight power control signal (S108).

4 is a result table of measuring the effect of reducing power consumption when the present invention is applied to a monitor and the execution program is a moving picture.

At the initial brightness of 100% without reducing the screen brightness, the power consumption (W) is 26.2, and if the screen brightness is reduced to 90% after 10 seconds, the power consumption (W) is 23.7 and the power consumption reduction rate is 9.5%, for 20 seconds After reducing the screen brightness to 80%, the power consumption (W) is 21.5 and the power consumption reduction rate is 17.9%. After 30 seconds, if the screen brightness is reduced to 70%, the power consumption (W) is 19.4 and the power consumption reduction rate is 25.9%. If the screen brightness is reduced to 60% after 40 seconds, the power consumption (W) is 17.3 and the power consumption reduction rate is 33.9%. If the screen brightness is reduced to 50% after 50 seconds, the power consumption (W) is 15.2 and the power consumption reduction rate is 41.9%, and if the screen brightness is reduced to 40% after 60 seconds, the power consumption (W) is 13.3 and the power consumption reduction rate is 49.2%.

5 is a table of results of measuring the effect of reducing power consumption when the present invention is applied to a desktop monitor and the execution program is a moving picture.

At the initial brightness of 100% without reducing the screen brightness, the power consumption (W) is 35.8, and if the screen brightness is reduced to 90% after 10 seconds, the power consumption (W) is 34.5 and the power consumption reduction rate is 3.6%, 20 seconds After reducing the screen brightness to 80%, the power consumption (W) is 32.5 and the power consumption reduction rate is 9.2%. After 30 seconds, if the screen brightness is reduced to 70%, the power consumption (W) is 31.4 and the power consumption reduction rate is 12.3%. If the screen brightness is reduced to 60% after 40 seconds, the power consumption (W) is 30.3 and the power consumption reduction rate is 15.3%. If the screen brightness is reduced to 50% after 50 seconds, the power consumption (W) is 29.3 and the power consumption reduction rate is 29.3 becomes 18.1%, and if the screen brightness is reduced to 40% after 60 seconds, the power consumption (W) is 28.1 and the power consumption reduction rate is 21.5%.

However, as described above, when the screen brightness is reduced compared to the current screen brightness, power consumption can be reduced relatively much.

As a result of the experiment, it was confirmed that there was no problem in watching the video when the screen brightness was reduced by 40% from the current screen brightness of 100% to 60%. Accordingly, in the present invention, the screen brightness is set to 60% reduced by 40% in video viewing.

Meanwhile, when the power control signal is not received from the brightness control unit 114 , the backlight board 120 may maintain the screen brightness at an initial state of 100%. In addition, the backlight board 120 may restore the screen brightness to 100% when the power control signal is not received in a state in which the power consumption is reduced by reducing the screen brightness according to the power control signal. That is, when the user uses a document program other than a moving picture or uses the Internet while the screen brightness is adjusted, the original screen brightness is restored again.

According to the present invention described above, when there is no change in the screen while the monitor is driven, the power consumption can be reduced by reducing the screen brightness, and when there is a screen change and the running program is a moving picture, the screen brightness can be reduced to save power consumption.

That is, power consumption can be reduced even when the execution program is in a standby state, and when the execution program is a moving picture while the execution program is running, power consumption can be reduced to optimally reduce the power consumption of the monitor.

Although the invention made by the present inventor has been described in detail according to the above embodiment, the present invention is not limited to the above embodiment and it is common knowledge in the art that various changes can be made without departing from the gist of the present invention. self-evident to those who have

1: monitor
2: body
110: monitor power consumption reduction device
111: video detection unit
112: motion detection unit
113: setting unit
114: brightness control
120: backlight board
130: display panel
140: video controller

Claims (8)

a video detection unit configured in a monitor to monitor the monitor screen to detect whether an execution program is a video;
a motion detection unit configured in the monitor and monitoring the monitor screen to output an event generation signal when there is no movement;
When a video detection signal is generated from the video detection unit or an event generation signal is output from the motion detection unit configured in the monitor, the power of the backlight board is controlled with a preset monitor screen brightness control value corresponding to the video or event generation signal. a brightness control unit for reducing power consumption by stepwise lowering the brightness of the monitor screen; and
and a setting unit configured in the monitor to provide monitor brightness setting information to the brightness control unit,
The brightness control unit checks the event occurrence signal of the motion detection unit as a priority, and when there is an event generation signal, lowers the monitor screen brightness stepwise to save power consumption, and if there is no event generation signal, the video detection unit has a video detection signal to reduce power consumption by lowering the monitor screen brightness step by step when a video detection signal is generated.
The setting unit sets the same or different target brightness and screen brightness adjustment time for reducing the monitor screen brightness in stages according to the case where the program executed on the screen is a moving picture and when an event occurrence signal is generated. Device.
The method according to claim 1, The video detection unit,
An apparatus for reducing power consumption of a monitor, characterized in that detecting whether an execution program displayed on the screen is a moving picture based on a change in the white ratio of the screen, and detecting that the running program is a moving image when the white ratio is greater than or equal to a set reference change width.
delete The method according to claim 1, The brightness control unit,
Monitor power consumption reduction device, characterized in that it saves power consumption by controlling the power supply of the backlight board in both situations in which the information displayed on the screen is changed when the program is executed or the information displayed on the screen is not changed because the program is in the standby state .
The method according to claim 1, The motion detection unit,
Monitor the monitor screen to check the cursor movement, output an event signal if there is no cursor movement during the reference time, or monitor the monitor screen to check whether the color of the screen changes, and generate an event if there is no color change for the reference time Monitor power consumption reduction device, characterized in that outputting a signal.
A method of reducing power consumption of a monitor by using the device for reducing power consumption of a monitor according to any one of claims 1 to 2 and 4 to 5,
(a) setting a monitor screen brightness control value in the setting unit;
(b) determining whether there is no movement on the monitor screen for a reference time in the motion detection unit, and outputting an event generation signal when it is determined that there is no movement;
(c) reducing the power consumption by controlling the power of the backlight board based on the power control signal for stepwise reducing the monitor screen brightness when the brightness control unit receives the event occurrence signal to lower the monitor screen brightness;
(d) detecting whether the running program is a moving picture by monitoring a monitor screen when there is no event occurrence signal from the motion detecting unit in the moving image detecting unit; and
(e) when the brightness control unit detects a moving picture in step (d), control the power of the backlight board based on the power control signal for step-by-step reduction of the monitor screen brightness to reduce the monitor screen brightness to reduce power consumption comprising steps,
Step (d) is,
A method for reducing monitor power consumption, characterized in that it is detected whether the running program displayed on the screen is a moving picture by the change in the white ratio of the screen, and detecting that the running program is a moving image when the white ratio is greater than or equal to a set reference change width.
The method according to claim 6, (b) step,
Monitor the monitor screen to check the cursor movement, output an event signal if there is no cursor movement during the reference time, or monitor the monitor screen to check whether the color of the screen changes, and generate an event if there is no color change for the reference time A method for reducing power consumption of a monitor, characterized in that outputting a signal.
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