KR20110060556A - Display control system - Google Patents

Display control system Download PDF

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Publication number
KR20110060556A
KR20110060556A KR1020090117167A KR20090117167A KR20110060556A KR 20110060556 A KR20110060556 A KR 20110060556A KR 1020090117167 A KR1020090117167 A KR 1020090117167A KR 20090117167 A KR20090117167 A KR 20090117167A KR 20110060556 A KR20110060556 A KR 20110060556A
Authority
KR
South Korea
Prior art keywords
display
image
screen
control system
difference
Prior art date
Application number
KR1020090117167A
Other languages
Korean (ko)
Inventor
김규열
Original Assignee
엘지이노텍 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020090117167A priority Critical patent/KR20110060556A/en
Publication of KR20110060556A publication Critical patent/KR20110060556A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The present invention relates to a display control system for controlling a display power or controlling an output screen of a display depending on whether a user uses a display. The display control system includes a camera that periodically photographs the front of the display at a predetermined time interval and a controller that controls the display when a difference between an image value of the periodically photographed images is greater than a threshold value.

Display, power, screen, picture value

Description

Display control system

The present invention relates to a control system of an image output apparatus.

If the computer system user is away from work for a long time, the output screen immediately before the user is away from the display screen is continuously output. At this time, if the monitor outputs a fixed screen for a long time, there is a possibility of damage. Screensavers, called screensavers, are designed to prevent damage to the monitor and output images that are converted every minute, such as video, on the screen so that the same screen is not maintained for a long time.

The screen saver is operated when the system is in a static state for a predetermined time, that is, when there is no input signal from the mouse or the keyboard. The operation start time of the screen saver can be selectively set by the user's display setting program of the operating system, and automatically operates when the operation start time of the screen saver elapses. Here, when setting the operation time of the screen saver, if the operation start time is set too long, it cannot function properly as the screen saver. If the time is too short, the screen saver operates when the user stops the key input for a while, so the work efficiency is improved. Is lowered. In addition, the mouse or keyboard is operated after a certain time has elapsed, so it is inefficient to operate a task for a long time in front of a computer that does not require key input, such as watching a movie.

The present invention provides a display control system that can accurately determine whether the user uses the display to control the power of the display or to control the display output screen.

According to an embodiment of the present invention, a display control system for controlling power of a display or controlling an output screen of a display according to whether a user uses a display may include a camera for photographing the front of the display at a predetermined time interval and the periodic And a controller for controlling the display when the difference between the image values of the captured images is greater than a threshold value.

The display control system according to the present embodiment can accurately recognize the actual user's situation and prevent unnecessary power consumption while protecting the display while minimizing user inconvenience.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be denoted by the same reference numerals regardless of the reference numerals and redundant description thereof will be omitted.

1 is a diagram illustrating a menu screen for general display registration information.

Referring to FIG. 1, after selecting and specifying a menu item of a screen saver among menu items provided through a menu screen of display registration information, a key input waiting time may be selected and designated as '2 minutes'. If the key input waiting time elapses for two minutes while the video output from the computer is normally displayed on the monitor, the preset screen protection image is automatically displayed on the monitor. Prevents unauthorized images from being exposed to third parties.

2 is a diagram illustrating a menu screen for general power option registration information.

Referring to FIG. 2, among menu items provided through a menu screen of power option properties, after selecting a menu item of 'Power Scheme' and selecting 'Presentation', a key input waiting time in the monitor off mode Can be selected as 'After 5 minutes'. While displaying the video output from the computer main body on the monitor, if the key input waiting time elapses for five minutes, the monitor is automatically turned off to prevent unnecessary power consumption. do.

3 is a view showing a display equipped with a display control system according to the present embodiment.

Referring to FIG. 3, the camera 330 is mounted to one side of the top of the display 100. The camera 330 periodically photographs the front of the display 100 at predetermined time intervals. The display 100 is determined by determining the activity of the viewer in front of the display 100 through the change of the captured image periodically. For example, the display 100 may be turned off, the screen protection image may be automatically displayed on the display 100, or the display 100 may be controlled in a sleep mode. Here, the display 100 includes a display 100 for various purposes, such as a display 100 or a display 100 for a TV, which is connected to a computer main body and displays an image output from the computer main body on a screen. In addition, it will be apparent to those skilled in the art that the display 100 may be various, such as a CRT display, a liquid crystal display, a light emitting diode (LED) display, and a plasma display panel (PDP).

In this embodiment, an example in which the camera 330 protrudes only the lens portion of the camera 330 to the inside of the display 100 to the outside, but the camera 330 may be variously attached to the display 100 to those skilled in the art. Will be self explanatory. For example, the camera 330 may be mounted to protrude out of the display 100. In addition, the camera 330 may be installed at a position to be spaced apart from the display 100 to photograph the front of the display 100.

4 is a block diagram showing a display control system according to the present embodiment.

3 and 4, the display control system 300 includes an input unit 310, a camera 330, and a controller 350.

The input unit 310 receives a selection of the display 100 control function by the user. The camera 330 is turned on by the selection signal of the input unit 310, periodically photographs the front of the display 100 at a predetermined time interval, and then transmits the captured image to the controller 350. The power of the camera 330 may be turned on only when the image is taken, and may be automatically turned off after the shooting is completed. The control unit 350 described below may control the power of the camera 330.

The controller 350 controls the display 100 by determining the activity of the viewer according to the change in the image value of the image photographed periodically at predetermined time intervals. For example, when it is determined that there is no viewer in front of the display 100, the display 100 may be turned off, the screen protection image may be automatically displayed on the display 100, or the display 100 may be controlled in a sleep mode. .

The input unit 310 and the control unit 350 may be mounted on the computer main body or mounted on the display 100. When the input unit 310 and the control unit 350 are mounted on the computer main body, the selection signal of the display 100 control function and the display 100 control signal by the control unit 350 are transmitted to the display 100 through the communication port. Can be.

5 is a flowchart illustrating a display control method according to the present embodiment.

Referring to FIG. 5, the user selects a display control function according to the present embodiment through the input unit 310 (S210). According to this selection, the power of the camera 330 is automatically turned on (S220). Then, the front of the camera 330 is taken to obtain a first image (S230). After the preset time passes (S240), the front of the display 100 is photographed again to obtain a second image (S250).

It is determined whether the difference between the video value of the first image and the video value of the second image is greater than a preset threshold (S260). The difference between the video value of the first image and the video value of the second image is a value for determining whether there is a change in the viewer in front of the display 100. For example, the image value of the first image may be a coordinate value on the screen of a pixel having an edge by extracting an edge from the first image. Specifically, an edge may be extracted from an image using an edge extraction mask such as a Sobel mask or a Canny mask. Thus, the difference between the image value of the first image and the image value of the second image may be a difference between the coordinate value on the screen of the pixel with the edge in the first image and the coordinate value on the screen of the pixel with the edge in the second image. In the first image and the second image, for example, a background such as a chair, desk, or bookshelf will have the same value as the image value of the first image and the image value of the second image.

In the portion where the viewer changes in front of the display 100, a difference between the image value of the first image and the image value of the second image may occur. For example, if a pixel of 30 rows and 20 columns has an edge in the first image, the pixel is displayed as 30:20 1 and the value is the image value of the first image. If the pixels of 30 rows and 20 columns in the second image do not have edges, the pixels are displayed as 30:20 0 and are digitized to become image values of the second image. Thus, a difference between the video value of the first image and the video value of the second image occurs. When the sum of the image values in all the pixels is larger than the predetermined threshold value, it may be determined that the change of the viewer occurs in front of the display 100.

In another example of the display control method according to the present embodiment, an edge is extracted from such an image, and the screen coordinates of the pixel having the edge may be performed in blocks instead of pixels. For example, after the edges are extracted from the first image and the second image, the difference between the image values may be obtained after numerically digitizing the blocks according to whether the edges are owned or not and making them image values.

If the difference between the video value of the first image and the video value of the second image is greater than the preset threshold in S260, the display 100 is controlled (S270). For example, the display 100 may be turned off, the screen protection image may be automatically displayed on the display 100, or the display 100 may be controlled in the sleep mode.

In operation S260, if the difference between the image value of the first image and the image value of the second image is not larger than a preset threshold, the third image is acquired by re-taking. Then, it is determined whether the difference between the image value of the second image and the image value of the third image is larger than a preset threshold. Here, the power of the camera may be controlled to be turned on only when the image is taken and automatically turned off after the shooting is finished.

The term '~ part' used in the present embodiment refers to software or a hardware component such as a field-programmable gate array (FPGA) or an ASIC, and '~ part' performs certain roles. However, '~' is not meant to be limited to software or hardware. '~ Portion' may be configured to be in an addressable storage medium or may be configured to play one or more processors. Thus, as an example, '~' means components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, procedures, and the like. Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functionality provided within the components and the 'parts' may be combined into a smaller number of components and the 'parts' or further separated into additional components and the 'parts'. In addition, the components and '~' may be implemented to play one or more CPUs in the device or secure multimedia card.

All of the above functions may be performed by a processor such as a microprocessor, a controller, a microcontroller, an application specific integrated circuit (ASIC), or the like according to software or program code coded to perform the function. The design, development and implementation of the code will be apparent to those skilled in the art based on the description of the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention. You will understand. Therefore, it is not intended that the invention be limited to the above-described embodiments, but the present invention will include all embodiments within the scope of the following claims.

1 is a diagram illustrating a menu screen for general display registration information.

2 is a diagram illustrating a menu screen for general power option registration information.

3 is a view showing a display equipped with a display control system according to the present embodiment.

4 is a block diagram showing a display control system according to the present embodiment.

5 is a flowchart illustrating a display control method according to the present embodiment.

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

100: display 300: display control system

310: input unit 330: camera

350: control unit

Claims (7)

In the display control system for controlling the power of the display or the output screen of the display, depending on whether the user uses the display, A camera which photographs the front of the display periodically at a preset time interval; And a controller configured to control the display when a difference between image values of the periodically captured images is greater than a threshold value. The method of claim 1, The difference between the image values of the periodically taken images is And a difference between values obtained by extracting an edge from each of the periodically photographed images and digitizing a coordinate value on a screen of a pixel having the edge. The method of claim 1, The difference between the image values of the periodically taken images is And extracting an edge from each of the periodically photographed images, and a difference of values obtained by digitizing a coordinate value on a screen of a block having the edge in units of blocks on a screen. The method of claim 1, The control unit If the difference of the image value is larger than the threshold A display control system for turning off the display, automatically displaying a screen protection image on the display, or controlling the display in a sleep mode. The method of claim 1, The camera The display control system is controlled so that the power is turned on only when the front of the display is periodically photographed and the power is automatically turned off after the photographing ends. The method of claim 1, The display is A display control system, which is connected to a computer main body and is a display for displaying an image output from the computer main body on a screen or a display for a TV. The method of claim 1, The display is A display control system, which is at least one of a CRT display, a liquid crystal display, a light emitting diode (LED) display, and a plasma display panel (PDP).
KR1020090117167A 2009-11-30 2009-11-30 Display control system KR20110060556A (en)

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KR1020090117167A KR20110060556A (en) 2009-11-30 2009-11-30 Display control system

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Application Number Priority Date Filing Date Title
KR1020090117167A KR20110060556A (en) 2009-11-30 2009-11-30 Display control system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10374911B2 (en) 2013-02-26 2019-08-06 Kt Corporation Device management in machine to machine network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10374911B2 (en) 2013-02-26 2019-08-06 Kt Corporation Device management in machine to machine network

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