KR100743296B1 - Method and apparatus for controlling a power an image display device - Google Patents

Abstract

The present invention is to enable a video display device operated like a personal computer (PC) to perform a power saving function such as a standby mode by itself.

That is, the present invention is a PC that supplies the R, G, B video signal and the horizontal / vertical synchronization signal, and receives the video signal from the PC and displays it, and changes the power mode according to the state of the input video signal itself It is configured to include a video display device for controlling.

Therefore, the power control device and method of the image display device according to the present invention can reduce power consumption by more easily implement the standby mode in the image display device itself without the complicated procedure of the operating system (OS), so that the PC environment is familiar There is an effect that can provide more convenience and user satisfaction to users who do not.

Video display device / standby mode

Description

Power control apparatus and method for an image display device {Method and apparatus for controlling a power an image display device}

1 is a block diagram schematically showing a power supply control apparatus for a video display device according to the prior art.

Figure 2 is a block diagram showing a power supply control apparatus for an image display device according to the present invention.

3 is a diagram illustrating an example of a comparison area of the comparator illustrated in FIG. 2.

4 is a flowchart illustrating a power control method of an image display device according to the present invention;

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

100: PC 300: Video display device

310: image processing unit 311: preamplifier

312: AD Converter 313: Format Converter

320: control unit 330: image detection unit

331: comparator 332: memory

340: power supply unit 350: display module (LCD or PDP)

360: clock generator 370: key input unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly, to an apparatus and method for controlling a power supply of an image display device to perform a power saving function on an image display device itself in an image display device such as a monitor operated like a personal computer (PC). It is about.

A monitor used in connection with a personal computer (PC) is a very important user interface in a PC environment and a means of delivering various image information to a user. Monitor and PC are connected with various signal cables to transmit R, G, B video signals as well as control signals.

Therefore, when the monitor is in use, the signal cable may be pulled out of the connector due to physical interference, and in such a case, the image may not be displayed on the monitor screen, that is, the image may be in a non-image state.

In addition, since the monitor has a system for saving power, when the display is not used for a certain time, the monitor enters the standby mode and the image does not appear on the monitor screen.

In the former case, when the user recognizes that the cable is missing and corrects the problem, the problem is solved. In the latter case, when the keyboard or the mouse is operated, the user exits the power saving mode and becomes a normal display.

Hereinafter, a power control apparatus for a video display device according to the prior art will be described with reference to the accompanying drawings.

1 is a block diagram illustrating a power supply control apparatus of an image display apparatus according to the prior art.

As shown in FIG. 1, the apparatus for controlling power of an image display apparatus according to the related art is based on a PC 10 which supplies a horizontal / vertical synchronization signal and a horizontal / vertical synchronization signal input through the PC 10. It is composed of a video display device 20 for controlling the display of the video signal and entering the power saving mode.

Here, the image display device 20 receives a horizontal / vertical synchronization signal input from the PC 10 and outputs a control signal to the microcomputer 21 and a standby mode according to the control signal of the microcomputer 21. Standby Mode) is configured to include a power supply unit 22 for controlling the power of the entrance lamp.

The operation of the power control device of the video display device configured as described above is as follows.

With the user turning on the PC 10 and the image display device 20, the user waits by operating an OS such as a window with a horizontal / vertical synchronization signal output from the video card of the PC 10. Controls the mode (Standby Mode) can be set.

In addition, when one of the horizontal and vertical synchronization signals is not transmitted from the PC 10 to the image display device 20, the microcomputer 21 embedded in the image display device 20 may be connected to the synchronization signal. By sensing the input and outputting a control signal to the power supply unit 22, the power saving mode is entered and the standby power is lowered.

However, the power control device of the image display device according to the prior art can set the standby function only by setting the OS such as Windows, and beginners and users who are not interested in standby power do not set the standby power mode properly by not setting. There was a problem.

In addition, the users who do not use the PC well, there are other problems that the product utilization effect is reduced by frequent occurrence of cases that do not utilize the actual function due to the complicated steps.

The present invention has been made to solve the above problems, and an object thereof is to enable a power saving mode to be performed by the image display device itself.

Its purpose is to set a certain area without any user's operation, and to automatically enter the power saving mode when the same signal is repeated over a predetermined signal in the setting area.

The apparatus for controlling power of an image display device according to the present invention for achieving the above object is a PC for supplying R, G, B image signals and horizontal / vertical synchronization signals, and receiving and displaying image signals from the PC. It is characterized by including a video display device for controlling the power mode change in accordance with the state of the input video signal.

Preferably, the image display device includes a key input unit for inputting a command for setting a mode desired by a user, an image processing unit for receiving an R, G, B image signal supplied from the PC and processing the display module on a display module; An image signal detection unit for determining whether the same signal is input to the R, G, and B image signals processed by the image processing unit for a predetermined time, a horizontal / vertical synchronization signal and the image signal supplied through the PC; It includes a control unit for outputting a control signal according to the detection signal input through the detection unit, and a power supply unit for controlling the power state itself according to the control signal of the control unit.

More preferably, the image processing unit may include a preamplifier for amplifying R, G, and B image signals in the PC, an AD converter for converting a signal amplified through the preamplifier into a digital signal, and a conversion in the AD converter. It is characterized by including a format converter for receiving a digital signal and image processing to be displayed on the display module.

More preferably, the image signal detector receives a digital R, G, B image signal converted by the image processor, compares whether there is a change in the image signal in a preset setting area, and compares with the control unit. It is characterized by including a memory for storing a reference area.

More preferably, the key input unit has a characteristic of inputting a timing setting, a wake-up, an interrupt, and the like.

More preferably, if the same image is repeatedly input in the setting region for a predetermined time as a result of the detection of the image signal detecting unit, the controller notifies the user of whether to enter the standby mode, and the standby unit (Standby) according to the user selection. Mode) It is characterized by outputting the entry command.

According to an aspect of the present invention, there is provided a method for controlling power of an image display device, the method comprising determining whether the same video signal is input to a preset area for a preset time, and as a result of the determination, the same video signal is input to the preset area. When the input is made, the method includes informing the user of whether to enter the standby mode and controlling the power of the video display device according to the user's selection.

Preferably, the step of determining whether the same video signal is input includes counting a time according to a set standby mode time, and determining whether the same video signal is input during the counting time. It is characterized by building.

More preferably, the step of determining whether the same image signal is input is a step of determining whether the same image is repeatedly input to the preset setting area for the preset time.

More preferably, the step of notifying the user of whether to enter the standby mode (Standby Mode) is characterized in that it comprises the step of displaying a message to enter the power saving mode to the user.

More preferably, the controlling of power of the image display device itself may include: executing a standby mode according to a command input from a user with reference to a notification message indicating whether the user enters a power saving mode; It is characterized in that it comprises the step of automatically canceling the power saving mode when a standby mode release signal such as an interrupt signal or a wake-up signal is input while being executed.

Hereinafter, a power control device for an image display device according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram schematically showing a power supply control apparatus of an image display apparatus according to the present invention, FIG. 3 is a view showing a comparison area of the comparator shown in FIG. 2, and FIG. 4 is a power supply of the image display apparatus according to the present invention. This is a flowchart showing a control method.

As shown in FIG. 2, the apparatus for controlling power of an image display device according to the present invention includes a PC 100 for supplying R, G, and B image signals and horizontal / vertical synchronization signals, and an image signal from the PC 100. And a video display device 300 which controls the power mode change according to the state of the input video signal.

The image display device 300 may receive a key input unit 370 for inputting a command for setting a mode desired by a user, and R, G, and B image signals supplied from the PC 100 and display them on a display module. The image processing unit 310 to process the image processing unit 310, and the image signal detection unit 330 to determine whether the same signal is input for a predetermined time in the predetermined setting region R, G, B image signal processed by the image processing unit 310 And a control unit 320 for outputting a control signal according to a horizontal / vertical synchronization signal supplied through the PC 100 and a detection signal input through the image signal detection unit 330, and the control of the control unit 320. A power supply unit 340 for controlling a power supply state according to a signal, a clock generator 360 for supplying a clock signal to the image processing unit 310, and an image signal processed by the image processing unit It is composed of a display module 350.

In addition, the image signal detector 330 receives the digital R, G, and B image signals converted by the image processor 310 and compares whether there is a change in the image signal in a preset setting area to communicate with the controller. Comparator 331, and a memory 332 for storing a predetermined reference area.

Referring to the operation of the power control device of the video display device configured as described above is as follows.

First, when a horizontal / vertical synchronization signal is input through the PC 100, the control unit 320 outputs a control signal to the image processing unit 310 to output the R, G, and B image signals input from the PC 100. Receives the image processing to be displayed on the display module 350.

That is, the image processor 310 receives the R, G, B image signals from the PC 100 and amplifies the predetermined R ', G', B 'image signals through the preamplifier 311, and amplifies them. The R ', G', and B 'video signals are input to the AD converter 312 and converted into digital R ^, G ^, B ^ video signals, and then the display module 350 through the format converter 313. ) Is processed into R ", G" and B "video signals that can be displayed and output.

In this case, the digital R ^, G ^, B ^ image signals converted by the AD converter 312 are input to the comparator 331 of the image detector 330, and the digital R ^, G ^, B input to the comparator 331, respectively. The video signals G ^ and B ^ compare with each other whether the same video signal is input for a preset time in a storage area previously stored in the memory 332. The storage area previously stored in the memory 332 may be a predetermined comparison point or a specific line, as shown in FIG. 3.

That is, as a result of the comparison of the comparator 331, when the same image signal is continuously input in the preset area in the memory 332 for a preset time, the comparator 331 communicates with the controller 320. The controller 320 recognizes this, and the controller 320 outputs a control signal to the image processor 310 so that the display module 350 executes in the standby mode. Is displayed on the display.

Accordingly, when the user wants to enter the standby mode according to the message displayed on the display module 350, a control signal is output to the power supply unit 340 so that the user can enter the standby mode, and the power supply unit 340 is the secondary side. The standby mode is implemented by cutting off the voltage.

In addition, when the standby mode is implemented, if a user wants a normal screen, the user inputs a key through the key input unit 310, and the control unit 320 receives the input to the standby mode release command to the power unit 340. The power supply unit 340 returns to the normal state by transmitting the power supply and supplying the secondary voltage again.

Referring to FIG. 4, the power control method of the image display device according to the present invention configured as described above is first driven when a power on command is input, according to a preset standby mode determination time (S101 to S102).

In operation S103, it is determined whether the same video signal is input to the same area while the timer is driven.

As a result of the determination (S103), when the same video signal is input, it is determined whether a predetermined set time has elapsed (S104).

As a result of the determination (S104), if the preset time has elapsed, "I will run in standby mode." It is determined whether the message is displayed (S105).

Subsequently, if the message is displayed, it is determined whether the user has responded to the message, that is, a selection command (S106).

As a result of the determination (S106), if the user inputs a selection command, the standby mode is executed (S107).

In addition, if there is an interrupt signal or a wake-up signal in the standby mode, the standby mode is canceled, and the video signal is continuously displayed in the normal screen state or the screen is terminated depending on whether the user inputs a power-off command. (S108-S109).

As described above, the apparatus for controlling power of an image display device according to the present invention detects an image signal converted into a digital code in a video display device equipped with a display module using an image signal as a digital code, such as an LCD and a PDP. If the same signal is repeated at the same point for each setting area for a predetermined time or more, the video display device outputs a standby mode switching command so that the power supply unit can be controlled by itself even if there is no command from the PC.

As described above, the apparatus and method for controlling power of an image display device according to the present invention have the following effects.

First, the video display device itself may implement the standby mode without the complicated procedure of the operating system (OS).

Second, power consumption can be reduced by more easily implementing the standby mode.

Third, as the image display device itself can switch to the standby mode irrespective of the PC, it can provide more convenience, stability of use, and quality satisfaction to users who are not familiar with the PC environment.

Claims (12)

PC for supplying R, G, B video signal and horizontal / vertical synchronization signal; And, And a video display device which receives and displays an image signal from the PC and controls the power mode change according to the state of the input video signal. The method of claim 1, The video display device A key input unit for inputting a command for setting a mode desired by the user, an image processing unit for receiving the R, G, and B image signals supplied from the PC and processing them to be displayed on a display module, and an R processed by the image processing unit A video signal detection unit for determining whether the same signal is input for a predetermined time in a preset setting region, a horizontal / vertical synchronization signal supplied through the PC, and a detection signal input through the video signal detection unit And a control unit for outputting a control signal and a power supply unit for controlling a power supply state according to the control signal of the control unit. The method of claim 2, The image processor A preamplifier for amplifying R, G, and B image signals in the PC, an AD converter for converting a signal amplified by the preamplifier into a digital signal, and a digital signal converted by the AD converter And a format converter configured to process an image so as to be displayed on the module. The method of claim 2, The image signal detector A comparator for receiving the digital R, G, and B image signals converted by the image processor and comparing the change of the image signal in a preset setting region to communicate with the controller, and a memory for storing a preset reference region; Power control device for a video display device characterized in that it comprises a. The method of claim 4, wherein And the preset setting area is a preset area such as a specific point and a specific line. The method of claim 2, And the key input unit inputs a timing setting, a wake-up, an interrupt, and the like. The method of claim 2, If the same image is repeatedly input in the setting area for a preset time as a result of the detection of the image signal detector, the controller notifies the user of whether to enter the standby mode and enters the standby mode to the power supply according to the user selection. Power control device for a video display device characterized in that for outputting a command. In the power control method of the video display device, Determining whether the same video signal is input to the preset area for a preset time; Informing the user whether to enter a standby mode when the same image signal is input to the preset region as a result of the determination; And, And controlling the power of the video display device according to a user's selection. The method of claim 8, The step of determining whether the same video signal is input And counting time according to a set standby mode time, and determining whether the same video signal is input during the counting time. The method of claim 8, The step of determining whether the same video signal is input And determining whether the same image is repeatedly input to the preset setting area for the preset time. The method of claim 7, wherein Informing the user whether to enter the standby mode (Standby Mode) And displaying a message for entering a power saving mode to the user. The method of claim 7, wherein The step of controlling the power by the image display device itself Executing a standby mode when a selection command is input by the user with reference to a notification message of whether the user enters a power saving mode; and a standby mode such as an interrupt signal or a wake-up signal while the power saving mode is being executed. Mode) power control method of a video display device comprising the step of automatically canceling the power saving mode when the release signal is input.

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