KR20090075266A - Image display device and driving method of the same - Google Patents

Abstract

An image display device and a driving method for turning off and turning on power automatically are provided to reduce power consumption by automatically turning on the power of the image display device. An image display unit(20) comprises a sub-control unit. The sub-control unit operates an image display panel. The sub-control unit performs automatic turning on function. An image display driving unit(10) comprises the main control unit. The main control unit transmits the video signal for operating the image display panel, the control signal and the information signal about the automatic on time. An automatic on switch(30) applies automatic on signal to the main control unit.

Description

Image display device and driving method thereof {IMAGE DISPLAY DEVICE AND DRIVING METHOD OF THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device and a driving method thereof, and more particularly, to an image display device capable of automatically turning on and off a power source and a driving method thereof.

In general, the image display apparatus includes an image display panel for displaying an actual image, and a microprocessor computer (MICOM), which is a sub-control unit provided in the rear board of the image display panel.

In addition, the image display apparatus includes a main controller which is a driving means for transmitting an image signal and a control signal to a microcomputer to drive the image display panel. Recently, the image display apparatus is driven by a high performance such as remote control via the Internet. Products in which a conventional personal computer is used as the main control unit have emerged.

Such an image display apparatus has generally used a management method in which an administrator manually turns on / off a power switch from a hardware method to drive or terminate driving of a liquid crystal display panel. However, this method is particularly inconvenient because a plurality of video display devices are provided or installed in a place where the administrator cannot reach easily, because the administrator has to turn on / off the power switches one by one.

Meanwhile, another method of power management of the video display device may include a method of implementing an auto on and auto off function through a firmware using a built-in personal computer.

The firmware method is a method of implementing a power management of a video display device by setting up a complementary metal oxide semiconductor (CMOS) basic input / output system (BIOS) of a personal computer. Requires expertise in proficiently configuring and changing CMOS BIOS. However, even though the actual administrator of most video display devices is a non-professional manager who cannot properly set up and change the CMOS BIOS, even if the provider of the video display device is provided with the method of setting and changing the CMOS BIOS according to the power management, Since the setting and changing method of the CMOS BIOS is implemented as a very complicated process, there is a problem that a frequent error occurs during the setting and changing or a driving error of the video display device due to an incorrect setting. In addition, such a firmware method has a problem in that a large portion of the personal computer needs to be continuously driven to automatically turn on even when the image display device is turned off.

Therefore, the technical problem to be solved by the present invention is that the administrator can easily input and modify the information about the automatic power supply of the image display device to the main controller, and even if the operation of the main controller is terminated, the image is unattended by the simple driving of the sub controller. The present invention provides an image display device and a method of driving the same, which can automatically turn on the power of a display device, thereby reducing power consumption and facilitating power management.

An image display apparatus according to an embodiment of the present invention includes a sub-controller which drives an image display panel and the image display panel and performs an auto-on function based on information about an auto-on time input in advance after the power is terminated. An image display driving unit including an image display unit, a main control unit for transmitting an image signal for controlling the image display panel, a control signal, and an information signal about an auto-on time to the sub control unit, and an auto-on function of the sub control unit And an auto-on switch for applying an auto-on signal of the image display driving unit to the main controller when the execution is completed.

The information on the auto-on time input from the main control unit to the sub-control unit may include current time data, auto-on time data, and auto-on function activation data.

The sub-controller may include a timer that is activated when the auto-on activation data is input and counts a time from a current time to an auto-on time based on the current time data and the auto-on time data.

The auto-on switch may comprise a nonpolar circuit switch.

The auto-on switch may be electrically connected to the sub controller and the image display driving unit, and may be turned on according to an input of an ON signal of the sub controller to activate the image display driving unit.

The image display driving unit includes a first power terminal and a second power terminal having different voltages and electrically connected to the auto-on switch. When the on-signal is input from the sub-control unit, the auto-on switch is configured to perform the operation. The image display driving unit may be activated by shorting a first power terminal and the second power terminal.

The sub controller may input the ON signal to the auto ON switch when counting of the timer is completed.

The image display driving unit may include software for arbitrarily inputting the auto-on time data and the auto-on activation data.

The auto-on time information further includes auto-off function activation data and auto-off time data of the image display driving unit, and the software may also input the auto-off function activation data and the auto-off time data.

On the other hand, the driving method of the image display device according to an embodiment of the present invention, the information on the automatic power-on time of the image display drive unit, the main control unit of the image display drive unit is input through the software in the image display drive unit. Determining whether to activate the control unit, and when the information about the auto-on time of the image display driving unit is activated, the main controller transmits the information about the auto-on time to the sub-control unit of the image display unit including the image display panel. The sub-controller may be configured to deactivate the image display driving unit. When the image display driving unit is deactivated, the sub-controller performs an auto power-on function based on information about an input auto-on time. When the auto on function is completed, the sub-controller Sending an auto-on signal to an auto-on switch and the auto-on switch activating the image display drive unit.

The auto-on time information may include current time data, auto-on time data, and auto-on function activation data.

Between determining whether the information on the automatic on time of the image display driving unit is activated, and transmitting the information on the automatic on time to the sub-control unit of the image display unit including the image display panel, the main controller, The method may further include determining whether to activate the auto-off function of the image display driving unit which is input through the software when the auto-on function is activated.

When the auto-off function is activated, the main control unit transmits the information on the auto-on time to the sub-control unit of the image display unit including the image display panel. It can transmit to the sub controller.

The main controller may further include determining whether a manual off signal of the image display driving unit is input from the outside when the auto-off function is not activated.

When the image display driving unit is deactivated, the performing of the auto-on function based on the information on the auto-on time input by the sub-controller is based on the current time data and the auto-on time data input to the sub-control unit. This can be done by counting from the current time to the auto-on time.

The auto-on switch is a nonpolar circuit switch, and the image display driving unit includes a first power terminal and a second power terminal having different voltages and electrically connected to the auto-on switch. The activating of the image display driving unit may activate the image display driving unit by shorting the first power terminal and the second power terminal when an on signal is input from the sub controller.

The method may further include displaying the initial image by the image display panel before determining whether to activate the information on the auto-on time of the image display driving unit. And a main controller transmitting abnormal current time data to the sub controller.

According to the image display device and the driving method thereof according to an embodiment of the present invention, the administrator can easily input and modify information on the automatic power supply of the image display device to the main controller, and even if the driving of the main controller is terminated, the sub-controller It is possible to automatically turn on the power of the video display device unattended by the simple driving of the power consumption of the video display device can be reduced and to facilitate the power management.

Specific details of other embodiments are included in the detailed description and drawings.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and those skilled in the art to which the present invention pertains. It is provided to fully inform the scope of the invention, and the invention is defined only by the scope of the claims.

Hereinafter, an image display device and a driving method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, an image display apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

1 is a schematic block diagram showing the configuration of a video display device according to an embodiment of the present invention, Figure 2 is a circuit diagram showing a circuit configuration of an auto-on switch of the video display device according to an embodiment of the present invention.

The image display device 1 according to an embodiment of the present invention includes an image display driving unit 10, an image display unit 20, and an auto-on switch 30.

The video display driving unit 10 may be generally configured as a personal computer, and automatically turns on time data transmitted to the sub controller 22 through the main controller 11 and the main controller 11, and automatically turns on. Activation data can be input arbitrarily, and also the software which can input auto-off activation data arbitrarily as needed is provided.

The main controller 11 may be generally composed of a microprocessor computer (MICOM), and after the termination of the image display driving unit 10, an image signal and control signal for driving the image display panel 21 and an image display driving unit 10. Information about the auto-on time of (10) is transmitted to the sub control unit 22.

 In addition, the image display driving unit 10 may include a first power terminal 12 and a second power terminal 13 having different voltages, and the first power terminal 12 and the second power terminal 13 may include an image. The display driving unit 10 is provided outside and connected to the power switch 40. As shown in FIG. 2, the first power supply terminal 12 may be a Vcc terminal, and the second power supply terminal 13 may be a Vdd terminal or vice versa.

It is configured outside the image display driving unit 10 and is electrically connected to a power switch 40 capable of applying an on or off signal to the image display driving unit 10.

The power switch 40 short-circuits or opens the first power terminal 12 and the second power source 13 terminal according to an on or off setting according to a manual operation of an administrator. open). When an on signal is applied to the image display driving unit 10 due to a short circuit between the first power terminal 12 and the second power source terminal 13, the image display driving unit 10 is activated. 1) When the whole is activated and is normally driven. When an off signal is applied to the image display driving unit 10 by mutual opening, the image display device 1 is inactivated when the image display driving unit 10 is deactivated. The drive may be forcibly terminated.

The image display unit 20 includes an image display panel 21 on which an actual image is displayed and a sub controller 22 provided on the rear of the image display panel 21.

The sub controller 22 drives the image display panel 21 and automatically inputs from the main controller 10 after the power of the entire image display device 1 is terminated according to the power termination of the image display driving unit 10 in an inactive state. Performs the auto on function based on the information on the on time. In addition, the sub controller 22 may be configured as a microprocessor computer (MICOM) having a simple conventional function.

Here, the information on the auto-on time input to the sub controller 22 may include current time data, auto-on time data, and auto-on activation data, and may further include auto-off activation data.

The sub controller 22 includes a timer 23, and the timer 23 automatically receives information on the auto-on time, that is, current time data and auto-on time data, from the current time when the sub-control unit 22 is input. Count time until on time.

The auto-on switch 30 is electrically connected to the first power terminal 12 and the second power terminal 13 of the sub controller 22 and the image display driving unit 10, and is connected by a connector cable. The first power terminal 12 and the second power terminal 13 may be electrically connected to each other.

In addition, the auto-on switch 30 may be configured as a non-polar circuit switch that is easy to install because there is no polarity. As illustrated in FIG. 2, a plurality of transistors TR1 and TR2, and a plurality of resistors having optional different resistance values ( R1, R2, R3, and R4).

The first transistor TR1 and the second transistor TR2 are selectively turned on or off in response to an ON signal input from the sub-control unit 22, and are thus the first power source of the image display driving unit 10. The terminal 12 and the second power supply terminal 13 are shorted to each other or open.

The plurality of resistors R1, R2, R3, and R4 may be set to have an arbitrary resistance value within a range for keeping the applied voltages of the first power supply terminal 12 and the second power supply terminal 13 constant. .

As such, the auto-on switch 30, which is a non-polar switch, can be easily assembled without regard to the direction when assembling regardless of the polarity of the first power supply terminal 12 and the second power supply terminal 13. It is possible to prevent the malfunction caused by.

Hereinafter, a driving method of the image display apparatus for driving the image display apparatus 1 according to the exemplary embodiment described above will be described in detail with reference to FIG. 3.

3 is a flowchart illustrating a method of driving an image display device according to an exemplary embodiment of the present invention.

The driving method of the image display apparatus 1 according to an exemplary embodiment of the present invention is first started at step S110 in which the initial image display panel 21 displays an initial image.

First, an On signal is input manually to the image display driving unit 10 by operating an external power switch 40 or a driving method of an image display apparatus according to an embodiment of the present invention to be described below (1). By the On signal is automatically input to the image display driving unit 10, the image display driving unit 10 is activated.

When the image display driving unit 10 is activated, the main controller 11 transmits an image signal and a control signal to the image display unit 20 to display an initial image.

When the initial image is displayed on the image display panel 21, since the image display panel 21 needs to continuously display a necessary image, the sub-control unit 22 deactivates the timer 23 to display the image 23. The software of (10) is operated (S120).

Accordingly, the main controller 11 of the image display driving unit 10 transmits abnormal current time data to the sub controller 22 of the image display unit 20 (S130). The abnormal current time data here is for example 25 hours exceeding 24 hours.

The sub controller 22 receiving the abnormal current time data deactivates the timer 23 to stop its function (S140). Therefore, the auto-on function of the image display driving unit 10 is not performed while the abnormal current time data is transmitted to the sub controller 22.

On the other hand, the main control unit 11 of the image display driving unit 10 continuously determines whether or not to activate the information on the auto-on time of the image display driving unit 10 input through the software in the image display driving unit 10. It is determined (S150).

Here, the information on the auto-on time to be determined includes current time data, auto-on time data, and auto-on function activation data.

If it is determined that the auto-on function is activated, it is determined whether the auto-off function of the image display driving unit 10 which can be input through the software is activated (S160).

Here, whether to activate the auto-off function as the determination target is auto-off function activation data and auto-off time data.

As a result of determination, when the auto-off function is not activated, the main controller 11 determines whether a manual off signal is input through an external power switch 40 (S170).

When the manual turn-off signal is input or the auto-off function is activated, the main control unit 11 determines the current time and the turn-on time of the sub-control unit 22 of the image display unit 20 including the image display panel 21. And information about an off time (S180).

That is, the main controller 11 transmits the current time data and the auto-on time data to the sub-control unit 22, and may also transmit the auto-off time data. If the manual off signal is input, the time data value obtained by adding a predetermined time to the time when the actual manual off signal is applied instead of the auto off time data is transmitted as the manual off time data.

When the sub-controller 22 transmits information on the current time, the on-time, and the off-time, which are information on the auto-on time, the sub-controller 22 inputs an activation signal to the timer 23, and the timer 23 On (S190)

Meanwhile, the main controller 11 deactivates the image display driving unit 10 in addition to transmitting information on the current time, the on time, and the off time, which are information on the automatic on time, to the sub controller 22. The driving of 1) is turned off (S200).

Unlike the present exemplary embodiment, after the driving stop step S200 of the image display apparatus, an operation step S190 of the timer 23 may be performed, or two steps may be performed simultaneously.

After that, the timer 23 that operates normally performs counting from the current time to the auto-on time based on the current time data and the auto-on time data (S210) to perform the auto-on function.

On the other hand, the sub controller 22 determines whether the automatic power-on function is completed (S220). In other words, it is determined whether the timer 23 has completed counting.

As a result of the determination, when the counting of the timer 23 is completed, the sub-control unit 22 transmits an auto-on signal to the auto-on switch 30, and accordingly, the auto-on switch 30 is operated (S230).

In the step S230 of activating the image display driving unit 10 by the auto-on switch 30, when the ON signal is input from the sub-control unit 22, the auto-on switch 30 is connected to the first power terminal 12. The video display driving unit 10 is activated by shorting the second power supply terminal 13.

At this time, the auto-on switch 30 is a nonpolar circuit, for example, if the first power supply terminal 12 of Vcc is 3.3V and the second power supply terminal 13 of Vdd is 5V, the current is the first power supply. The terminal 12 flows to the second power supply terminal 13 side.

In this case, when the auto-on signal is input from the sub controller 22, the first transistor TR1 of the auto-on switch 30 is turned on to connect the first power terminal 12 and the second power terminal 13 to each other. Short circuit. Accordingly, the image display driving unit 10 is activated, and the image display device 1 is driven.

On the other hand, when the first power supply terminal 12 is 5V and the second power supply terminal 13 is 3.3V, current flows from the second power supply terminal 13 to the first power supply terminal 12 side.

In this case, when the auto turn-on signal is input from the sub controller 22, the second transistor TR2 of the auto-on switch 30 is turned on, so that the first power terminal 12 and the second power terminal 13 are turned on. Short the

When the auto-on switch 30 operates in this manner, the image display driving unit 10 is activated (S) (S240). When the image display driving unit 10 is activated, the main controller 11 transmits an image signal and a control signal to the image display unit 20 so that an image is displayed on the image display panel 21, thereby completely eliminating the image display device 1. It is activated and driven.

An image display device and a driving method thereof according to an embodiment of the present invention activate the auto on and auto off functions of the image display device 1 through software included in the image display drive unit 10 so as to activate the image display device 1 ) Can be automatically turned on and off based on the auto off time and auto on time set by the administrator, so that power management of the video display device 1 can be very easy.

On the other hand, the present invention is a step (S140) of determining whether to activate the information on the automatic power-on time of the image display driving unit 10 and the image display unit 20, the main control unit 11 includes an image display panel 21 Activating the auto-off function of the image display driving unit 10 that can be input through the software when the auto-on function is activated between the steps of transmitting information on the auto-on time to the sub-control unit 22 of FIG. Determining whether or not (S150), and if the auto-off function is not activated, the main control unit 11 determines whether the manual off signal of the image display driving unit 10 is input from the outside (S160) At least one may be omitted.

1 is a schematic block diagram showing the configuration of a video display device according to an embodiment of the present invention;

2 is a circuit diagram illustrating a circuit configuration of an auto on switch of an image display device according to an embodiment of the present invention;

3 is a flowchart illustrating a method of driving an image display device according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: video display device 10: video display drive unit

11: main control unit 12: first power supply terminal

13: second power supply terminal 20: video display unit

21: image display panel 22: sub control unit

23: timer 30: auto on switch

40: manual power switch

Claims (17)

An image display unit including an image display panel and a sub-controller which drives the image display panel and performs an auto-on function based on information about an auto-on time input in advance after the power is terminated; An image display driving unit including a main control unit for transmitting an image signal for controlling the image display panel, a control signal, and an information signal about an auto-on time to the sub controller; And an auto-on switch for applying an auto-on signal of the image display driving unit to the main controller when the auto-on function of the sub controller is completed. Video display device. In claim 1, The information on the auto-on time input from the main control unit to the sub-control unit includes current time data, auto-on time data, and auto-on function activation data. In claim 2, And the sub-controller is activated when the auto-on activation data is input and includes a timer counting a time from a current time to an auto-on time based on the current time data and the auto-on time data. In claim 3, And the auto-on switch is a nonpolar circuit switch. In claim 4, And the auto-on switch is electrically connected to the sub controller and the image display driving unit, and is turned on according to an input of an ON signal of the sub controller to activate the image display driving unit. In claim 5, The image display driving unit includes a first power terminal and a second power terminal having different voltages and electrically connected to the auto-on switch. And the auto-on switch activates the image display driving unit by shorting the first power terminal and the second power terminal when an on signal is input from the sub controller. In claim 6, And the sub control unit inputs the on signal to the auto on switch when the counting of the timer is completed. In claim 7, And the image display driving unit includes software for arbitrarily inputting the auto-on time data and the auto-on function activation data. In claim 8, The automatic on time information further includes auto off function activation data and auto off time data of the image display driving unit, And the software may also input the auto-off function activation data and the auto-off time data. Determining, by the main control unit of the image display driving unit, whether to activate the information on the auto-on time of the image display driving unit inputted through software in the image display driving unit; Transmitting, by the main controller, the information on the auto-on time to the sub-control unit of the image display unit including the image display panel when the information about the auto-on time of the image display driving unit is activated; Deactivating the image display driving unit by the main controller; When the image display driving unit is deactivated, performing the automatic power on function based on the information on the automatic power on time inputted by the sub controller, And when the sub-controller performs the auto-on function, the sub-controller transmits an auto-on signal to the auto-on switch, and the auto-on switch activates the image display driving unit. In claim 10, The auto-on time information includes current time data, auto-on time data, and auto-on function activation data. In claim 11, Between determining whether the information on the automatic on time of the image display driving unit is activated, and transmitting the information on the automatic on time to the sub-control unit of the image display unit including the image display panel, the main controller, And determining whether to activate the auto-off function of the image display driving unit, which is input through the software, when the auto-on function is activated. In claim 12, If the auto off function is activated, In the step of the main control unit transmitting information on the auto-on time to the sub-control unit of the image display unit including the image display panel, the information on the auto-off time is also transmitted to the sub-control unit of the image display unit. Method of driving a video display device. In claim 12, And determining whether the manual turn-off signal of the image display driving unit is input from the outside when the auto-off function is not activated. The method of claim 13 or 14, When the image display driving unit is deactivated, the sub-controller performs an auto-on function based on the information on the auto-on time input. And counting from a current time to the auto-on time based on the current time data and the auto-on time data input to the sub controller. The method of claim 15, The auto-on switch is a nonpolar circuit switch, The image display driving unit includes a first power terminal and a second power terminal having different voltages and electrically connected to the auto-on switch. The step of activating the automatic display switch the image display driving unit And the auto-on switch activates the image display driving unit by shorting the first power terminal and the second power terminal when an on signal is input from the sub controller. The method of claim 16, Before the step of determining whether to activate the information on the automatic on time of the image display driving unit, The image display panel further comprises the step of displaying an initial image, And the main controller transmits abnormal current time data to the sub controller in the initial image display step of the image display panel.

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