KR20080063673A - Apparatus and method for controlling operation of display - Google Patents

Abstract

A device and a method for controlling operation of a display module are provided to perform system functions by using an auxiliary display module formed to a rear side of an LCD, which is a main display module, when the power of a main system is turned off, and reduce power consumption and perform the main system smoothly by controlling the auxiliary display module when the main system is turned on to enable the auxiliary display module to use various devices of the main system. A device includes a PSU(Power Supply Unit), a switch(42), a display unit, and a control unit(41). The control unit switches power and/or a signal received from the display unit to be operated when a predetermined event occurs in a system. The predetermined event is opening/closing a cover of a main display module(44) and/or main power-on/off. The display unit comprises a plurality of display modules. The main display module is operated by an AC power unit(43) and an auxiliary display module(45) is operated by auxiliary power unit(46).

Description

Apparatus and method for controlling operation of display}

1 is a block diagram of a general computer

2 is a diagram illustrating a configuration of a liquid crystal display brightness level adjusting device in a general computer;

3 is a block diagram of a computer system including a controller and a memory;

4 is a block diagram of a plurality of display units according to the present invention and a system in which power is applied to the display units.

5 is a flowchart illustrating an operation based on a state of a system according to the present invention, for example, whether a main LCD is opened or closed, or whether main power is applied.

The present invention relates to a display operation control apparatus and method that can be used in place of the main display by applying power to the secondary display when a predetermined case, such as power off of the main display, to control the operation of the secondary display. will be.

Hereinafter, the related art and related art will be described.

1 is a block diagram of a general computer.

As shown in Fig. 1, a CPU 15, a slot 14, a memory 16, and an LCD 17 serving as a display means are connected to each other via a bus or a data line.

The power supply 10 includes an AC adapter 11 for rectifying an AC voltage, which is a general power source, a battery 12 that is embedded in a system and used as an auxiliary power source, and is connected to the power supplies. It includes a converter 13 for converting power.

That is, most portable devices including a notebook PC include an AC adapter 10 as a power source or a battery 12 as an auxiliary power source.

When the display 17 is closed in the system as described above, the basic functions of the system cannot be implemented.

2 is a diagram illustrating a configuration of a liquid crystal display brightness level adjusting device in a general computer.

In the liquid crystal display 27 of the notebook computer, as shown in FIG. 2, a light emitting element 270 such as a Cold Cathode Fluorescence Lamp (CCFL) element is located below or above the liquid crystal display 27.

In addition, a pulse width is applied to a power supply unit 20 for converting the battery power supply 22 or the AC adapter power supply 21 into a predetermined voltage level, and a power supply having a predetermined voltage level applied through the power supply unit 20. The inverter 23 is configured to switch according to a pulse width modulation signal and apply the light to the light emitting device 270.

When the user increases or decreases the brightness level of the liquid crystal display 27 by using a keyboard 29 or another device as an input means, a pulse width modulation (PWM) signal applied to the inverter 23 is applied. And a microcomputer 25 for increasing or decreasing the brightness level of the liquid crystal display.

On the other hand, in the microcomputer 25, the brightness level of the liquid crystal display is variably adjusted, and the brightness level of the liquid crystal display is automatically reduced according to a user's key input, thereby minimizing battery power consumption.

3 is a block diagram of a computer system including a controller and a memory.

As shown in the figure, a central processing unit (CPU) 30, a North Bridge 32 connected to the CPU and controlling a video controller 31 and a memory 33 for controlling graphics and the like, HDD 36 storing data, such as various programs and data operated / processed according to the programs, and a flash memory and a control chip in which data stored in the HDD is loaded. And an input / output control hub (ICH) 35 for controlling a main board (not shown) on which a chip or the like is mounted.

The CPU 30 includes a register 30a which stores a driver, which is an operation program that reads from the HDD 36 and stores data stored in the flash memory 37 into the memory unit 33 to operate. )Wow; A first chipset (North bridge) (MCH) 32 in contact with the CPU and controlling a memory bus input / output control function; And a second chipset (South bridge) ICH 35 that manages input / output functions such as a keyboard controller 38 and a power button 39, which are peripheral devices.

In addition, an input / output control unit 34 is connected to the ICH 35.

In the above description, the CPU and the first chipset / second chipset may be included to represent the controller.

In the computer system configured as described above, in general, only one display unit exists. In particular, when the display unit is closed, it is inconvenient to open the display unit in order to implement a system function.

The present invention proposes that the secondary display is configured on the rear side of the main display.

In driving the auxiliary display, it is proposed to drive by switching the power / signal to the auxiliary display by checking whether the main display is closed and whether the power is supplied to the main display.

In order to achieve the above object, the display operation control apparatus according to the present invention, the power supply; A power switching unit; A display unit; And a controller configured to control switching of a power source and / or a signal to a display unit to be operated when an event of a predetermined system occurs. It works including.

In one embodiment of the present invention, the predetermined event is whether the main display cover is opened or closed and / or the main power ON / OFF.

In addition, the display operation control method according to the present invention comprises the steps of checking whether a predetermined event occurs; Switching the power / signal for the auxiliary display unit as a result of the checking; And performing a function of a system using the auxiliary display.

Hereinafter, an apparatus and method for controlling display operation according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a block diagram illustrating a plurality of display units according to the present invention and a power applied to the display units.

As shown in FIG. 4, the plurality of display units 44 and 45, the powers 43 and 46 applied to the display units, and events generated in the system, for example, an LCD cover (LID) opening / closing ( OPEN / CLOSE), the main power ON / OFF, etc. to check the operation of the display unit is configured to include a control unit 41 for controlling the switching unit 42.

In the present invention configured as described above, the main display 44 of the plurality of displays is operated by the main power source 43, and the auxiliary display 45 is operated by the auxiliary power source 46.

In general, the system operates as a main power source, but when the user closes the LCD, the auxiliary power is applied to the auxiliary display to use each function of the system common device 47 (speaker, e-mail transmission, etc.).

5 is a flowchart illustrating the operation of the system according to the present invention, for example, whether the main LCD is opened or closed, or whether the main power is applied.

As shown in FIG. 5, the controller (41 of FIG. 4) checks whether a predetermined event has occurred. (S 501).

As a result of the check, when the main display 44 is closed and the main power supply 43 is turned off, the main display 44 is switched to a power / signal for operating the auxiliary display 45 to implement the basic functions of the system in the closed state. 502).

Therefore, the functions provided by the system are performed using the auxiliary display. (S 503).

The operation of the present invention will be described separately in each case.

The event generation mentioned in the present invention is an operation for detecting when an event necessary for the auxiliary display module and the system to operate organically occurs. As an example, the types of events include (main) system power on / off and LID (opening and closing of the LCD case).

In addition, the switch control in the present invention is a signal for controlling the switch IC used to select the main power / auxiliary power or to distinguish the interface shared between the main system and the auxiliary display module.

Therefore, it determines the power on / off of the system and the operation of the Aux display module to control the interface so that it cannot be shared at the same time.

In addition, the Aux (auxiliary) display module control according to the present invention will be described in each case.

        First, when the main power applied to the system is off and the main LCD is closed, the auxiliary LCD configured on the back of the main LCD can be used to use all the functions provided by the system.

Second, although the main power applied to the system is off, when the main LCD is open, in order to waste unnecessary power when the Aux display module is operated, the LCD related functions of the auxiliary module are disabled and the backlight is turned off.

     Third, when the main system power is on, the secondary display operation is interrupted for the main system operation, all switches are switched off, the Aux display module is kept stand-by and the interface with the basic system is opened. ex: power, I2C, etc.)

As described above, the display power control apparatus and method according to an embodiment of the present invention, the main display of the system is operated with a main power (for example AC power), the auxiliary display is a secondary power (for example battery power) In general operation, when the main display unit is closed and the main power is off, when the user wants to use the functions of the system, the secondary display unit (auxiliary display, auxiliary power) to operate the system to process the basic functions will be.

As mentioned above, preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art can improve other various embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. Changes, substitutions or additions will be possible.

According to the present invention, when the main system power is turned off, system functions may be performed using an auxiliary display configured on the back of the LCD which is the main display.

In addition, the auxiliary display module (Aux display module) uses a variety of devices (ex: Speaker, Amp, HDD, Memory device, etc.) of the system, in order to use the main system when the power-on to control the auxiliary display to power It can reduce the usage and smoothly operate the system.

Claims (5)

Power supply; A power switching unit; A display unit; And A controller configured to control switching of a power source and / or a signal to a display unit to be operated when an event of a predetermined system occurs; Display operation control device comprising a. The display operation control apparatus according to claim 1, wherein the predetermined event is whether the main display cover is opened or closed and / or the main power is on or off. The apparatus of claim 1, wherein the display unit comprises a plurality of displays. The apparatus of claim 3, wherein the main display of the plurality of displays is operated by a main power source, and the auxiliary display is operated by an auxiliary power source. In driving any one of a plurality of displays, Checking whether a predetermined event occurs; Switching the power / signal for the auxiliary display unit as a result of the checking; And And performing a function of a system by using the auxiliary display.

Images