KR20170017282A - Control apparatus for power-saving in computer and method thereof - Google Patents

Abstract

The present invention relates to an apparatus for controlling power-saving of a computer and a method thereof, in which a screen is captured in the computer to control the power-saving based on a screen change rate. The apparatus for controlling the power-saving of the computer includes: a screen capturing unit for capturing a screen displayed on a display device; a screen change analysis unit for analyzing a change of the screen captured by the screen capturing unit; a function input unit for setting a power-saving mode for a computer main body and the display device; an input device for receiving an operation signal of a user; and a power-saving control unit for controlling the power-saving of the computer main body and the display device based on a screen change analysis result of the screen change analysis unit, an input signal of the input device, and the power-saving mode set by the function input unit.

Description

[0001] The present invention relates to a control apparatus for a computer,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a computer power saving, and more particularly, to a computer power saving control apparatus and method for controlling power saving based on a screen change rate after a screen capture.

Computers such as a desktop computer and a portable computer are connected to a body for performing calculations and the like and a monitor for displaying the calculation results when used.

These computers are used in restaurants and homes as much as it is difficult to count, not only in the companies that are currently working, but also in a lot. Computers are already popular, as it is very rare that one computer at home or company is not presently available.

The computer is powered or turned off by the power switch of the user. It is troublesome for the user to turn on the computer every time it is used and to turn off the power when not using the computer. It is common sense. Therefore, power dissipation occurs when not in use.

In order to prevent such power consumption, a computer has a power saving mode, detects a keyboard input or the like, and automatically performs a power saving function when there is no keyboard input for a predetermined time period, thereby preventing power wastage. In the power saving function, it is preferable that both the main body and the monitor perform the power saving function together.

Background Art [0002] Conventional technologies for power saving of a computer are disclosed in Patent Documents 1 and 2 below.

The prior art disclosed in Patent Document 1 includes a communication unit, a control unit for executing a power saving program according to power saving policy information, A collection unit for collecting reference information; A determination unit for determining whether or not the power saving mode is entered; The computer is connected to a power saving management server that manages a power save mode operation through a network, and performs a power save mode under the control of the power save management server.

In the related art disclosed in Patent Document 2, a monitor and a computer system exchange SCL (Serial Clock) and SDA (Serial Data Line) signals with each other through a display data channel command interface (DDC-CI) The power saving mode operation event is saved in the computer system, and the power saving mode release event of the computer system is released to the power saving mode release event.

Korean Patent Laid-Open No. 10-2012-0084057 (published on July 27, 2012) Korean Registered Patent No. 10-1330212 (Registered November 11, 2013)

However, the conventional art disclosed in the above-mentioned prior art has a disadvantage in that a network is configured for power saving control and a power saving is implemented through communication between the server and the computer, so that the implementation of the power saving system is complicated, There is a drawback that it takes time.

In addition, the prior art disclosed in Patent Document 2 has an advantage that a computer system can be powered down by a power saving mode operation event according to power off of a monitor, but power saving of the computer can not be realized without operating the power of the monitor.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a computer power saving control apparatus and a computer power saving control apparatus for controlling power saving based on a screen change rate after a screen capture It has its purpose.

Another object of the present invention is to provide a computer power saving control device and a method thereof for determining a first power saving based on a screen change rate and implementing a final power saving function by reflecting a user's intention, .

According to an aspect of the present invention, there is provided a computer power saving control apparatus including: a screen capturing unit capturing a screen displayed on a display device; A screen change analyzing unit for analyzing a change of a screen captured by the screen capture unit; A function input unit for setting a power saving mode of the computer main body and the display device; An input device for receiving an operation signal of a user; And a power saving control unit for controlling power saving of the computer main body and the display unit based on a screen change analysis result of the screen change analysis unit, an input signal of the input device, and a power saving mode set by the function input unit.

The screen change analyzing unit analyzes the screen change rate by comparing the number of pixel bits of the capture screen with the number of pixel bits of the previous capture screen.

The screen change analyzing unit may generate a power saving signal in the power saving control unit to enter the power saving mode only when the screen change rate of the capture screen is less than a set reference value.

The power saving control unit informs the power saving function when it is judged as the initial power saving through the screen change analyzing unit and judges that the input signal of the input device does not exist during the waiting time as the final power saving and controls the power saving. do.

The power saving controller informs the user of the power saving function by adjusting the screen brightness of the display device.

The power saving control unit calculates a power saving time and a reduced power amount upon entering the power saving mode, and displays the calculated power saving time and the reduced power amount.

The power saving control unit displays the power saving time and the reduced power amount on the same day as a graph.

According to another aspect of the present invention, there is provided a computer power saving control method comprising the steps of: (a) capturing a screen of a display device when an input value inputted through an input device is in a stopped state; (b) analyzing a change in the captured screen; (c) comparing the screen change rate analyzed in the step (b) with a set reference value, and determining that the screen change rate is an initial power saving if the screen change rate is less than the reference value; (d) predicting a power saving function if the initial power saving is determined in step (c); (e) if the input signal of the input device does not exist during the waiting time after the step (d), it is determined as final power saving and the power saving is controlled according to the set power saving mode.

In addition, the computer power saving control method according to the present invention further includes: (f) calculating a power saving time and a reduced power amount when the power saving mode is entered by the step (e), and displaying the calculated power saving time and the reduced power amount.

According to the present invention, there is an advantage that optimal power saving can be realized by controlling the power saving of the computer based on the screen change rate after screen capture.

In addition, the power saving time and the reduced power amount during power saving are calculated and displayed on the screen, thereby allowing the user to easily recognize the power saving time and the power saving state.

1 is a block diagram of an embodiment of a computer power saving control apparatus according to the present invention;
FIGS. 2A and 2B are diagrams for illustrating a screen change rate,
FIGS. 3A and 3B are diagrams for explaining screen brightness control during initial power saving,
FIG. 4 is a flowchart illustrating a power saving mode setting /
FIG. 5 is a diagram illustrating an environment setting for power saving mode setting,
6 is an example of an option setting screen for providing window function convenience,
FIG. 7 is a diagram illustrating an example of the amount of power savings displayed in the present invention,
8 is a flowchart illustrating a computer power saving control method according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a computer power saving control apparatus and method according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a computer power saving control apparatus according to a preferred embodiment of the present invention.

The computer power saving control apparatus according to the present invention includes a display unit 10, a screen capturing unit 20, a screen change analysis unit 30, a function input unit 40, an input device 50, a power saving control unit 60, (70).

The display device 10 refers to a display device such as a computer monitor and includes a screen capture unit 20, a screen change analysis unit 30, a function input unit 40, an input device 50, a power saving control unit 60, Means a configuration provided in the computer main body. The power controller 70 is also provided in the computer main body, and is provided in the display unit if necessary.

The screen capture unit 20 plays a role of capturing a screen displayed on the display device 10. Since the screen capture function is basically provided in a general computer, a detailed description thereof will be omitted.

The screen change analysis unit 30 analyzes the change of the screen captured by the screen capture unit 20. [ The screen change analysis uses analyzing the screen change rate by comparing the number of pixel bits of the capture screen with the number of pixel bits of the previous capture screen. In addition, the screen change analyzer 30 generates a power save signal to enter the power save mode only when the screen change rate of the capture screen is less than the set reference value, and transmits the power save signal to the power save control unit 60. The reference value set here can be varied and set by the user. In the present invention, it is assumed that the reference value is set to 20% as an example.

The function input unit 40 serves to set a power saving mode of the computer main body and the display device. The power saving mode can be set by using a separate power saving mode function key or by using a hot key (Hot Key) using a keyboard.

The input device 50 is an input device for inputting a user's operation signal and means an input device such as a keyboard and a mouse.

The power saving control unit 60 controls the power saving mode based on the screen change analysis result of the screen change analysis unit 30, the input signal of the input device 50 and the power saving mode set by the function input unit 40, And controls the power saving of the mobile terminal. The power saving control unit 60 may be implemented using a central processing unit provided in a computer.

If the input signal of the input device 50 is not present during the waiting time, the power saving control unit 60 may notify the power saving function to the final power saving mode It is preferable to judge and control power saving.

More preferably, the power saving controller 60 notifies the power saving function primarily by adjusting the brightness of the screen of the display device 10.

In addition, the power saving control unit 60 calculates a power saving time and a reduced power amount when entering the power saving mode, and displays the calculated power saving time and the reduced power amount. At this time, the power saving time and the reduced power amount can be displayed in the statistical graph.

The operation of the computer power saving control apparatus according to the present invention will now be described in detail.

First, the user sets the power saving mode by changing the option function provided in the window. For example, as shown in Fig. 6, in the power management option, a power saving item is selected in the detail item of the power saving menu, and a power saving mode in three stages is set through the function input unit 40. [ Here, the three-step power saving mode can also be set using a hot key. For example, you can set the power saving mode to a mode such as Ctrl + 1 for sleep mode, Ctrl + 2 for hibernate mode, and Ctrl + 3 for monitor sleep mode.

Here, as shown in FIG. 4, the three power saving modes are three power saving modes such as a monitor power saving mode, a power saving mode, and a maximum power saving mode. The monitor power saving mode means a state in which the main body enters the power saving mode after a certain period of time when the monitor is turned off. The power saving mode means a state in which the power saving is performed according to the set function of the main body. Means a state in which power saving is performed according to the set maximum power saving mode.

The display setting can be turned off through the option setting screen as shown in FIG. 6, and the power-on mode entering time can be variably set through the option setting the computer to the power saving mode.

When the power saving mode is set, when the operation of the computer starts, it is confirmed whether an input signal exists through the input device 50 such as a mouse and a keyboard. As a result of checking, if the input signal exists, the current state is maintained. Otherwise, if there is no input signal, the screen capture unit 20 captures the screen for power saving control from the state where the input signal is stopped, 30). Here, the screen capture is performed in units of seconds. In the present invention, it is assumed that screen capturing is performed in units of 5 seconds as an example.

The screen change analyzer 30 analyzes the screen change rate by comparing the data (number of pixel bits) of the current capture screen with the data (number of pixel bits) of the capture screen captured immediately before. The data of the currently captured screen and the data of the capturing screen captured immediately before are extracted to extract the difference and the screen change rate is calculated on the basis of the extracted difference value. For example, the screen change rate is calculated using the ratio of the extracted difference value in the entire screen. Figure 2a is the immediately previous capture screen, and Figure 2b is the currently captured capture screen. When calculating the difference value between them, the screen change rate becomes 50%. This means that about 50% of the entire screen has changed from the previous screen.

In addition, the screen change analyzer 30 compares the calculated screen change rate with a predetermined reference value, determines that the screen change rate is lower than the set reference value, and transmits the power save signal to enter the power saving mode And transmits it to the power saving control unit 60. [ The reference value set here can be varied and set by the user. In the present invention, it is assumed that the reference value is set to 20% as an example.

That is, the power save signal is generated to enter the power saving mode only when the screen change rate is less than 20%. If the screen change rate is greater than 20, the screen of the actual display device 10 is largely changing. In this case, the user determines that the computer is in use and maintains the current state.

When the power saving signal is generated from the screen change analyzer 30, the power saving controller 60 determines that the power saving operation is an initial power saving, and outputs a warning signal that the power saving function is scheduled to be executed. Here, the primary power saving function prediction is performed by adjusting the brightness of the screen of the display device 10. For example, in the screen state as shown in FIG. 3A, the screen brightness (darkness) is reduced (brightness is reduced) to make the screen state as shown in FIG. 3B. By viewing this screen state, the user will recognize that the power saving function will be entered.

After performing the primary power saving function announcement, the power saving control unit 60 waits for a predetermined time to confirm the user's intention. Here, the waiting time (for example, 10 seconds) can be arbitrarily changed and set by the user through the option setting as shown in FIG. 5, setting of a screen capture time, setting of a reference value for determining a screen change rate, setting of an average power consumption, and the like are possible.

If the user does not want to enter the power saving mode after the primary power saving function, the user inputs a signal using a keyboard or a mouse. When the signal is input through the input device, the power saving control unit 60 immediately releases the power saving function and switches to the initial power saving function input state.

Otherwise, if there is no input through the input device 50 for a preset waiting time after the primary power saving function is predicted, the power saving mode is finally determined and the power saving mode is performed. Here, when entering the power saving mode, the user performs power saving based on the power saving mode set in any one of the three modes set by the function input unit 40 or the hot key. The power saving function controls the display power supply by controlling the power controller 70, and performs the power saving function by controlling standby power or main power of the computer main body.

When entering the power saving mode, the power saving control unit 60 cumulatively counts the power saving time. And calculates the amount of power saved during the power saving time. Here, it is preferable that the power saving amount is calculated by converting the SMPS average power consumption amount Wh input by the user in the time as shown in FIG.

In addition, statistical processing is performed on the calculated power saving time and power saving power amount. Statistical processing can be done by date, week, month, year. In the present invention, for convenience of description, statistical processing is described for each date by way of example.

The power saving time and the power saving amount can be displayed on the screen as shown in FIG. 4. When the user requests the power saving time and energy saving amount confirmation through a specific operation, It does. Thereby, the user can easily check the power saving time or the power saving amount.

FIG. 8 is a flowchart illustrating a computer power saving control method according to the present invention, wherein S represents a step.

As shown in FIG. 8, a computer power saving control method according to the present invention includes: (a) capturing a screen of a display device (S11 to S13) when an input value input through an input device is in a stop state; (b) analyzing a change in the captured screen (S14); (c) comparing the screen change rate analyzed in the step (b) with a set reference value, and determining that the screen change rate is an initial power saving if the screen change rate is less than the reference value (S15 to S16); (d) a step (S17) of predicting a power-saving function if it is determined in the step (c) that the power-saving function is the initial power-saving mode; (e) when the input signal of the input device does not exist for the waiting time after the step (d), it is determined as final power saving and the power saving is controlled according to the set power saving mode (S18 to S19); (f) calculating a power saving time and a reduced power amount when the power saving mode is entered by the step (e), and displaying the calculated power saving time and the reduced power amount (S20).

FIG. 8 is a flowchart illustrating a computer power saving control method according to the present invention, wherein S represents a step.

First, the user sets the power saving mode by changing the option function provided in the window. The setting of the power saving mode is the same as the setting of the power saving mode in the setting of Fig. 1, and therefore, this will be referred to.

When the power saving mode is set and the operation of the computer is started, it is confirmed in step S11 whether an input signal exists through the input device 50 such as a mouse and a keyboard.

If it is determined that the input signal is present, the current state is maintained. Otherwise, if there is no input signal, the screen capture unit 20 captures the screen in step S13 for power saving control from the state where the input signal is stopped And transmits it to the screen change analysis unit 30. Here, the screen capture is performed in units of seconds. In the present invention, it is assumed that screen capturing is performed in units of 5 seconds as an example.

In step S14, the screen change analyzer 30 analyzes the screen change rate by comparing the data (number of pixel bits) of the current capture screen with the data (number of pixel bits) captured immediately before. The data of the currently captured screen and the data of the capturing screen captured immediately before are extracted to extract the difference and the screen change rate is calculated on the basis of the extracted difference value. For example, the screen change rate is calculated using the ratio of the extracted difference value in the entire screen. Figure 2a is the immediately previous capture screen, and Figure 2b is the currently captured capture screen. When calculating the difference value between them, the screen change rate becomes 50%. This means that about 50% of the entire screen has changed from the previous screen.

In addition, the screen change analyzer 30 compares the screen change rate calculated in step S15 with a predetermined reference value, determines that the screen change rate is lower than the set reference value, and enters the power save mode And transmits the generated power saving signal to the power saving control unit 60. [ The reference value set here can be varied and set by the user. In the present invention, it is assumed that the reference value is set to 20% as an example.

That is, the power save signal is generated to enter the power saving mode only when the screen change rate is less than 20%. If the screen change rate is greater than 20, the screen of the actual display device 10 is largely changing. In this case, the user determines that the computer is in use and maintains the current state.

When the power saving signal is generated from the screen change analysis unit 30 in step S16, the power saving control unit 60 determines that the power saving operation is an initial power saving and outputs a warning signal that the power saving function is to be primarily executed. Here, the primary power saving function prediction is performed by adjusting the brightness of the screen of the display device 10. For example, in the screen state as shown in FIG. 3A, the screen brightness (darkness) is reduced (brightness is reduced) to make the screen state as shown in FIG. 3B. By viewing this screen state, the user will recognize that the power saving function will be entered.

After performing the primary power saving function announcement, the power saving control unit 60 waits for a predetermined time in step S18 to confirm the user's intention. Here, the waiting time (for example, 10 seconds) can be arbitrarily changed and set by the user through the option setting as shown in FIG. 5, setting of a screen capture time, setting of a reference value for determining a screen change rate, setting of an average power consumption, and the like are possible.

If the user does not want to enter the power saving mode after the primary power saving function, the user inputs a signal using a keyboard or a mouse. When the signal is input through the input device, the power saving control unit 60 immediately releases the power saving function and switches to the initial power saving function input state.

Otherwise, if there is no input through the input device 50 for a predetermined waiting time after the primary power saving function prediction, the power saving mode is finally determined and the power saving mode is performed in step S19. Here, when entering the power saving mode, the user performs power saving based on the power saving mode set in any one of the three modes set by the function input unit 40 or the hot key. The power saving function controls the display power supply by controlling the power controller 70, and performs the power saving function by controlling standby power or main power of the computer main body.

When entering the power saving mode, the power saving control unit 60 cumulatively counts the power saving time as in step S20. And calculates the amount of power saved during the power saving time. Here, it is preferable that the power saving amount is calculated by converting the SMPS average power consumption amount Wh input by the user in the time as shown in FIG.

In addition, statistical processing is performed on the calculated power saving time and power saving power amount. Statistical processing can be done by date, week, month, year. In the present invention, for convenience of description, statistical processing is described for each date by way of example.

The power saving time and the power saving amount can be displayed on the screen as shown in FIG. 4. When the user requests the power saving time and energy saving amount confirmation through a specific operation, It does. Thereby, the user can easily check the power saving time or the power saving amount.

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 controlling power saving of a monitor and a computer main body in a computer.

10: Display unit
20: Screen capture unit
30: screen change analysis unit
40: Function input part
50: input device
60: power saving control unit
70: Power controller

Claims (9)

An apparatus for controlling power saving of a computer,
A screen capture unit for capturing a screen displayed on a display device;
A screen change analyzing unit for analyzing a change of a screen captured by the screen capture unit;
A function input unit for setting a power saving mode of the computer main body and the display device;
An input device for receiving an operation signal of a user;
And a power saving control unit for controlling the power saving of the computer main body and the display device based on a screen change analysis result of the screen change analysis unit, an input signal of the input device, and a power saving mode set by the function input unit. Control device.
The computer power saving control apparatus of claim 1, wherein the screen change analyzer analyzes the screen change rate by comparing the number of pixel bits of the capture screen with the number of pixel bits of the previous capture screen.
The computer power saving control device according to claim 1 or 2, wherein the screen change analyzing unit generates a power saving signal in the power saving control unit to enter the power saving mode only when the screen change rate of the capture screen is less than a set reference value.
The power saving control unit notifies the power saving function when the initial power saving is determined through the screen change analyzing unit, determines that the input power of the input device does not exist during the waiting time, and controls the power saving Wherein the power saving control device comprises:
The computer power saving control device according to claim 4, wherein the power saving control unit notifies a power saving function primarily through a brightness adjustment of the display unit.
The computer power saving control device according to claim 4, wherein the power saving control unit calculates a power saving time and a power saving amount upon entering the power saving mode, and displays a power saving time and a reduced power saving amount.
The computer power saving control apparatus of claim 6, wherein the power saving control unit displays a power saving time and a reduced power amount on the same day as a graph.
A method of controlling power saving of a computer,
(a) capturing a screen of a display device when an input value inputted through the input device is in a stop state;
(b) analyzing a change in the captured screen;
(c) comparing the screen change rate analyzed in the step (b) with a set reference value, and determining that the screen change rate is an initial power saving if the screen change rate is less than the reference value;
(d) predicting a power saving function if the initial power saving is determined in step (c); And
(e) if the input signal of the input device does not exist during the waiting time after the step (d), determining that the power saving is final and controlling the power saving according to the set power saving mode.
The method of claim 8, further comprising: (f) calculating a power saving time and a reduced power amount when the power saving mode is entered by the step (e), and displaying the calculated power saving time and the reduced power amount.

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