KR20030002917A - Apparatus and method for controlling LCD of dual monitor - Google Patents

Abstract

PURPOSE: An LCD controlling device for a dual monitor and a method thereof are provided to convert a plurality of screens to same or different screens simultaneously without using any additional distributor. CONSTITUTION: An LCD controlling device for a dual monitor includes a plurality of A/D converters(21,22) for converting RGB analog signals output from a plurality of PC video cards into digital signals, a video decoder(23) for decoding video signals input from a video/DVD, a signal control part(24) for processing the signals digitalized by the A/D converters, a CPU(25) for controlling the operations of the A/D converters, the video decoder, the signal control part and first and second LCD driving parts, and first and second LCD driving controllers(26,27) for receiving signals output from the signal control part and the video decoder and external signals via an external input terminal and outputting driving signals for first and second LCDs(30,40) of the dual monitor.

Description

LCD control device of dual monitor and its method {Apparatus and method for controlling LCD of dual monitor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual monitor, and in particular, to switch a liquid crystal display (LCD) screen of a dual monitor to the same screen or another screen simultaneously without requiring a separate distributor. A dual monitor LCD control device and method thereof are provided.

In general, a monitor in a computer refers to a computer display and its associated parts that are packaged as a single physical entity and are usually separated from other parts of the computer. Notebook computers do not have a separate monitor because the display and associated components are integrated into the same object along with the rest of the computer. In practice, the terms monitor and display are used interchangeably in the same sense.

In order to express various screens on these monitors, the following two methods are mainly used.

The first is to connect two monitors using a splitter.

1 is a view showing the use of two monitors using a conventional distributor.

Here, reference numeral 1 is a PC, 3 is a distributor connected to the PC 1, 4 and 5 are connected to the distributor 3, and the signal of the PC 1 is distributed through the distributor 3 and displayed. Is a monitor.

Thus, when the signal of the PC 1 is distributed by the distributor 3, the signal of the PC 1 is output to each of the monitors 4 and 5 connected to the distributor 3, and the two monitors 4 and 5 are output. The data output from the PC 1 can be displayed.

The second is to connect the PC and the monitor separately.

2 is a view showing the use of two monitors by connecting the monitor to the conventional PC, respectively.

Reference numerals 1 and 2 are PCs, and 4 and 5 are monitors separately connected to the PCs 1 and 2, respectively.

Thus, the plurality of PCs 1 and 2 are respectively connected to the monitors 4 and 5 individually, and the data processed by the PCs 1 and 2 are output to the respective monitors 4 and 5.

However, according to this conventional technology, there is a problem that the screen quality is lowered because an external distributor is used.

In addition, if you don't want the same screen, you need to distribute different signals separately from the outside and input differently distributed signals to each monitor. there was.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, an object of the present invention is to switch the LCD screen of the dual monitor to the same screen or different screens at the same time without the need for a separate distributor. The present invention provides a dual monitor LCD control apparatus and method thereof.

1 is a view showing the use of two monitors using a conventional distributor,

2 is a view showing the use of two monitors by connecting the monitor to the conventional PC, respectively,

3 is a block diagram of an LCD controller and a peripheral device of the dual monitor according to an embodiment of the present invention,

4 is a block diagram of an LCD control apparatus of a dual monitor according to an embodiment of the present invention.

5 is a flowchart illustrating an LCD control method of a dual monitor according to an exemplary embodiment of the present invention.

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

10: dual monitor 20: LCD control device

21: first analog-to-digital converter 22: second analog-to-digital converter

23: video decoder 24: signal control unit

25: CPU 26: first LCD drive controller

27: 2nd LCD drive controller 30: 1st LCD

40: second LCD 51: PC1

52: PC2 53: Video / DVD

54: external input

In order to achieve the above object, an LCD control apparatus of a dual monitor according to an embodiment of the present invention includes a plurality of analog-to-digital converters for converting RGB analog signals respectively output from video cards of a plurality of PCs into digital signals; ; A video decoder for decoding the video signal input from the video / DVD; A signal controller for processing signals converted into digital signals in the plurality of analog-digital converters; A CPU for controlling operations of the plurality of analog-digital converters, the video decoder, the signal controller, and the first and second LCD drive controllers, respectively; First and second LCDs that receive signals from the signal controller and the video decoder, receive external signals through an external input terminal, and output driving signals of the first and second LCDs of the dual monitor according to the input signals; Including the drive controller is characterized by its technical configuration.

In order to achieve the above object, a method for controlling an LCD of a dual monitor according to an embodiment of the present invention includes a first step of determining a type of a signal when a signal is input to the dual monitor; If the signal type is a PC signal, converting an RGB analog signal into a digital signal; A third step of causing the video signal to be decoded if the kind of the signal is a video signal; A fourth step of allowing a signal to be input to the LCD driving controller if the kind of the signal is an external signal; And a fifth step of controlling the signal after the second to fourth steps, selecting the LCD of the dual monitor to output the signal, and then outputting the signal to the selected LCD. .

The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, an embodiment according to the present invention as described above, an LCD control apparatus for a dual monitor and a method thereof will be described with reference to the accompanying drawings.

3 is a block diagram of an LCD control device and a peripheral device of the dual monitor according to an embodiment of the present invention.

Here, reference numeral 10 denotes a dual monitor for outputting a plurality of screens through a double-sided LCD, and 20 denotes a signal disposed by the selected LCD by processing an externally input signal and selecting an LCD to be output. An LCD control device for outputting and controlling a display operation of the LCD, wherein 30 and 40 are first and second LCDs of the dual monitor.

Further, reference numerals 51 and 52 denote PCs for inputting signals to the LCD control apparatus 20, and 53 denotes video for inputting a video signal or a DVD (Digital Video Disk) signal to the LCD controller 20. 54 is an external input for inputting an external signal to the LCD control device 20.

4 is a block diagram of an LCD control apparatus of a dual monitor according to an embodiment of the present invention.

As shown in the drawing, a plurality of analog-to-digital converters (Analog-to-Digital Converters, ADCs) converting RGB (Red Green Blue) analog signals output from video cards of the plurality of PCs 51 and 52 into digital signals, respectively. , 21, 22); A video decoder 23 for decoding the video signal input from the video / DVD 53; A signal controller (24) for processing signals digitally converted by the plurality of analog-digital converters (21, 22); CPU 25 for controlling operations of the plurality of analog-to-digital converters 21 and 22, the video decoder 23, the signal controller 24, and the first and second LCD driving controllers 26 and 27, respectively. )Wow; Receives the signals of the signal controller 24 and the video decoder 23, receives the external signal through the external input 54, the first and second LCD of the dual monitor 10 in accordance with the input signal And first and second LCD drive controllers 26 and 27 for outputting drive signals 30 and 40.

5 is a flowchart illustrating an LCD control method of a dual monitor according to an embodiment of the present invention.

As shown in the drawing, when a signal is input to the dual monitor 10, first steps ST11 and ST12 for determining the type of the signal; A second step (ST13) for converting the RGB analog signal into a digital signal if the kind of the signal is a PC signal; A third step (ST14) for causing the video signal to be decoded if the kind of the signal is a video signal; A fourth step ST15 of allowing a signal to be input to the LCD driving controllers 26 and 27 if the kind of the signal is an external signal; A fifth step of controlling signals after the second to fourth steps, selecting LCDs 30 and 40 of the dual monitor 10 to output signals, and then outputting the signals to the selected LCDs 30 and 40; It includes the steps ST16 to ST18.

The operation of the LCD monitor and the method of the dual monitor according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, in one embodiment of the present invention shown in Figs. 3 and 4, the LCD control device 20 is mounted inside the dual monitor 10, and the signals and video / DVD input from the two PCs 51 and 52 are mounted. It is shown that the four signals of the input signal and the signal input to the external input can be processed and displayed on the two monitors LCD 30 and 40 respectively.

In addition, the LCD control apparatus of the dual monitor according to the present invention may be installed in the PC as well as the dual monitor 10, or may be separately installed between the dual monitor 10 and the PC.

Thus, the first and second analog-to-digital converters 21 and 22 convert the RGB analog signals output from the video cards of the PCs 51 and 52 into digital signals. Since noise is generated when the analog RGB signal is directly distributed, an analog-to-digital converter is required to obtain a clear screen without noise.

The video decoder 23 decodes the video signal input from the video / DVD 53 to restore the video signal.

The signal controller 24 processes the signals digitally converted by the first and second analog-to-digital converters 21 and 22.

The CPU 25 performs operations of the first and second analog-to-digital converters 21 and 22, the video decoder 23, the signal controller 24, and the first and second LCD drive controllers 26 and 27, respectively. The controller processes various input signals and controls the signals processed by the two LCDs 30 and 40 to be displayed.

The first and second LCD driving controllers 26 and 27 receive signals from the signal controller 24 and the video decoder 23, receive an external signal through the external input 54, and according to the input signal. The driving signals of the first and second LCDs 30 and 40 are output so that the signals are displayed on the selected LCD among the first and second LCDs 30 and 40.

In this case, the dual monitor has a key (not shown in the drawing). The dual monitors control the outputs of the first and second analog-to-digital converters 21 and 22 according to the situation and perform different operations, respectively. When the users of the second LCDs 30 and 40 perform different tasks and want to share the screen, they can be displayed on the same screen by a key operation, and when the screen sharing is finished, the user can return to the original state. The inputs that can be shared are PC1 51, PC2 52, video / DVD 53, and external input 54.

For example, when the first LCD 30 is used as the main screen and the second LCD 40 is used as the sub screen, the input signal and the video / video of the PC1 51 are input to the first LCD 30 which is the main screen. The input signal of the DVD 53 is output, and the second LCD 40, which is an auxiliary screen, has an input signal of the PC1 51, an input signal of the PC2 52, an input signal of the video / DVD 53, and an external input ( 54) can be output.

Then, the first LCD 30 which is the main screen and the second LCD 40 which is the auxiliary screen can be used as separate monitors, and the screens of the PC1 51 and the video / DVD 53 can be shared.

To share the screen, a key of the dual monitor 10 may be used or an OSD (On Screen Display) menu may be used. The OSD is a function that directly displays on the screen information that the user needs or needs to know about the monitor. The OSD information includes screen brightness and contrast, tuning, RGB adjustment, and vertical and horizontal size and position adjustment of the screen. The OSD displays the progress of these adjustments on the screen.

As described above, the present invention processes multiple screens simultaneously on the same screen or different screens and displays them on the LCD screen of the dual monitor.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the dual monitor LCD control apparatus and method thereof according to the present invention do not require a separate divider and display multiple screens simultaneously by switching the LCD screen of the dual monitor to the same screen or another screen, The effect of realizing the double-sided screen will be.

In addition, the present invention also has the advantage of improving the work efficiency by automatically performing two LCD screen control.

Claims (4)

A plurality of analog-to-digital converters for converting the RGB analog signals output from the video cards of the plurality of PCs into digital signals; A video decoder for decoding the video signal input from the video / DVD; A signal controller for processing signals converted into digital signals in the plurality of analog-digital converters; A CPU for controlling operations of the plurality of analog-digital converters, the video decoder, the signal controller, and the first and second LCD drive controllers, respectively; First and second LCDs that receive signals from the signal controller and the video decoder, receive external signals through an external input terminal, and output driving signals of the first and second LCDs of the dual monitor according to the input signals; Dual monitor LCD control device comprising a drive controller. The method of claim 1, The LCD monitor of the dual monitor is mounted in a dual monitor having a first and a second LCD. The method of claim 1, The LCD monitor of the dual monitor is mounted in a PC. Determining a kind of a signal when a signal is input to the dual monitor; If the signal type is a PC signal, converting an RGB analog signal into a digital signal; A third step of causing the video signal to be decoded if the kind of the signal is a video signal; A fourth step of allowing a signal to be input to the LCD driving controller if the kind of the signal is an external signal; And controlling a signal after the second to fourth steps, selecting a LCD of the dual monitor to output the signal, and then outputting the signal to the selected LCD. LCD control method.