KR100715368B1 - Dual screen display system - Google Patents

Abstract

The disclosed dual screen display system includes a video providing means for providing a video signal such as a camera or an external video source, and determining whether the provided video signal is a dual screen mode or a single screen mode and processing the video signal accordingly. In the case of the control mode, the main screen and the sub-screen are controlled, and in the single-screen mode, the video signal processing means for controlling the main screen and the video signal are displayed under the control of the video signal processing means. Comprising at least one side screen is provided side by side, in the dual screen mode includes a display means for displaying one image on the main screen and the sub screen.

According to the above configuration, it is possible to solve the limitation on the size of the product as well as the price increase while employing a large display screen.

Detach main screen, sub screen, screen controller, sub screen.

Description

Display system of double screen}

1 is a block diagram of a display system according to an embodiment of the present invention;

2 is a view showing an image displayed on the main screen and the sub-screen according to an embodiment of the present invention,

3A to 3C are block diagrams showing the configuration of the video signal processing means shown in FIG. 1;

4A to 4C are views illustrating various embodiments in which an auxiliary screen is attached to and detached from a main screen;

5 is a flowchart of a dual screen display method according to an exemplary embodiment of the present invention.

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

10: camera 12: external video source

14 decoder 20 video signal processing means

21: frame buffer 22: signal processing IC

23: screen controller 30: main screen

34: connector 36: insertion hole

38: cover 40: subscreen

44 connector 46: insertion projection

47: protrusion 49: cover

50: hinge

The present invention relates to a dual screen display system, and more particularly, in the case where a main screen and an auxiliary screen are provided in an electronic device equipped with a display device such as an MP3 player, a mobile communication terminal, a digital camera, and a large size screen is required. The present invention relates to a system for displaying one image on a main screen and a sub screen.

Electronic devices such as MP3 players, mobile communication terminals, camcorders, digital cameras, PDAs, and the like are provided with display devices to visually check and obtain necessary information or images through the display devices.

However, these electronic devices are mostly portable products, and are manufactured to be small in size and light in weight so that they can be easily carried.

Therefore, especially in the case of portable products, the large screen cannot be displayed through the display device, and in order to display the large screen, a large display device must be employed, so that the size of the product increases as the size of the display device increases. Not easy to carry

In addition, when the display device is enlarged, for example, when the display device is an LCD, the price variation according to the size is severe and there is a problem that it cannot be easily enlarged.

For example, the display device of the mobile communication terminal is described.

Mobile communication terminals, such as mobile phones, cellular phones, PCS phones, personal mobile phones, and wireless terminals, are devices that allow individuals to carry and talk wirelessly between people on the move. It is configured to send and receive text messages.

In the case of an integrated type, only one display device of the mobile communication terminal is installed in the upper part of the terminal, and in the case of a folder type, two display devices are used in the mobile communication terminal.

In this case, in addition to the main display device installed inside, an auxiliary display device is installed outside the folder, and the user can receive simple information such as date, time, communication sensitivity, battery level, and notification of receiving a text message even when the terminal is not opened. to provide.

In addition, the folder-type mobile communication terminal is provided with almost ten numerals / signal keys and several function keys inside the main body of the main body (in the case of a folder type, except for the folder).

That is, since the inside of the mobile communication terminal main body has about 20 keys at various positions and angles, the inside of the mobile communication terminal without expanding the external size of the mobile communication terminal in the conventional mobile communication terminal configuration method. It is not possible to expand the size of the display.

The present invention has been made in order to solve the above problems, the main screen and the auxiliary screen side by side in an electronic device equipped with a display device such as an MP3 player, a mobile communication terminal, a digital camera, side by side, it is possible to manufacture a compact and lightweight It is an object of the present invention to provide a dual screen display system that can easily reduce the increase in price while displaying a large size image by adopting a large screen.

In order to achieve the above object, a dual screen display system according to an embodiment of the present invention is an image providing means for providing a video signal, such as a camera or an external video source, and the provided video signal in a dual screen mode Image signal processing means for controlling a main screen and an auxiliary screen in the dual screen mode, and controlling the main screen in the single screen mode by determining whether the image is in a single screen mode or a single screen mode. Display means for displaying the video signal under the control of the means, consisting of at least one side of the main screen and at least one side of the main screen side by side, in the case of the dual screen mode, one image is displayed on the main screen and the sub-screen It includes.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a dual screen display system according to the present invention.

1 is a block diagram of a display system according to an exemplary embodiment of the present invention.

As shown, the dual-screen display system according to an embodiment of the present invention, the camera 10, the external image source 12 and the decoder 14, which is an image providing means, the image signal processing unit 20, and display The main screen 30 and the sub screen 40, which are means, are configured.

The camera 10 is an optical device for taking a picture or a video, and takes an image and transmits it to the image signal processing means 20.

The external image source 12 is a source for providing an image to the system of the present invention through a wired or wireless Internet or the like, and the image provided through the external image source 12 is provided in a compressed state.

The decoder 14 restores this compressed image and transmits it to the image signal processing means 20.

The video signal processing means 20 determines whether it is a dual screen mode or a single screen mode according to an input video signal or a user's selection, and processes the video signal according to it. 40, the image is displayed on the main screen and the sub screen, and in the single screen mode, the main screen 30 is controlled to display the image only on the main screen.

That is, in the dual screen mode, the video signal processing means 20 is used to display the input video signal (video signal of one frame) as the video signal to be displayed on the main screen 30 and the video signal to be displayed on the sub-screen 40. After separating and processing each of the separated image signals, the main screen 30 and the sub-screen 40 are controlled to display an image.

In the single screen mode, the input image signal is processed without being separated, and then the main screen 30 is controlled to display the image.

The main screen 30 is a display device generally provided in an electronic device provided with a display device.

Auxiliary screen 40 is an auxiliary display means of the main screen 30, at least one side is provided on the side of the main screen 30 to display a large-size image, the image like the main screen 30 An image is displayed by the control of the signal processing means 20.

In the present invention, the main screen 30 and the sub screen 40 are provided as a liquid crystal display (LCD), but are not limited thereto.

Although not shown in the drawings in addition to the above-described configuration, it is a matter of course that the working memory space RAM and the ROM in which the program is further provided.

2 is a diagram illustrating an image displayed on an auxiliary screen according to an embodiment of the present invention.

In the general single screen mode, the video signal passing through the video signal processing means 20 is displayed on the main screen 30, and all information is implemented without data loss.

In the dual screen mode, that is, when a large size display is required, one image is displayed on the main screen 30 and the sub screen 40 by using the main screen 30 and the sub screen 40 as one screen. This is displayed largely.

3A to 3C are block diagrams showing the configuration of the video signal processing means shown in FIG. 1, and are block diagrams in which the video signal of one frame can be divided into two signals.

In FIG. 3A, the image signal processing means 20 includes a frame buffer 21 for storing an image and two signal processing ICs 22a and 22b which share the frame buffer 21.

Each of the signal processing ICs 22a and 22b is provided with screen controllers 23a and 23b, respectively.

The frame buffer 21 is a memory space for displaying an image on the main screen 30 and the sub-screen 40, and stores the image signal by dividing the main screen and the sub-screen.

The screen controllers 23a and 23b are connected to the main screen 30 and the sub-screen 40 to control each screen, and the signal processing ICs 22a and 22b control the screen controllers 23a and 23b provided therein. The frame memory 21 is read and written.

Each of the signal processing ICs 22a and 22b operates by RAM and ROM not shown to read and write the frame buffer 21 to control the internal screen controllers 23a and 23b so that the main screen 30 and the sub-screen ( 40) to display the image.

In FIG. 3B, the video signal processing means includes one signal processing IC 22c and two screen controllers 23c and 23d.

In the dual screen mode, the signal processing IC 22c separates the input video signal into the video signals of the main screen 30 and the sub-screen 40 to display each of the separated signals on the screens 30 and 40. And display the image on the main screen 30 and the sub-screen 40 by controlling the screen controllers 23c and 23d with respect to the processed signal.

In FIG. 3C, the video signal processing means includes one signal processing IC 22d and one screen controller 23e.

One screen controller 23e controls the main screen 30 and the sub screen 40 separately.

In the dual screen mode, the signal processing IC 22d separates the input video signal into the video signals of the main screen 30 and the sub-screen 40 to process each separated signal, one for the processed signal. To control the screen controller 23e.

The screen controller 23e controls the main screen 30 and the sub-screen 40 with respect to each processed signal by the control signal of the signal processing IC 22d, and controls the main screen 30 and the sub-screen 40. Display the image.

4A to 4C illustrate various embodiments in which an auxiliary screen is attached to and detached from the main screen.

4A illustrates that the sub screen is located on the front or rear of the main screen and is located on the side of the main screen in a folder type.

The main screen 30 and the sub screen 40 are displayed by the control of the image signal processing means 20, the sub screen 20 is the main screen 30 by the hinge 50 is provided on the side The hinge is rotated from the front to the rear of the main screen 30 around the hinge.

At this time, the sub-screen 40 is rotated in the direction of the arrow shown in the drawing by the hinge 50.

Accordingly, when the sub screen 40 is not used, the main screen 30 is positioned at the front or rear of the main screen 30 to reduce the size and hassle in use, thereby making it easy to carry, and when using the sub screen 40, It can be located on the side of the main screen 30 and used as one screen.

4B is a form in which an auxiliary screen is completely separated from the main screen and then connected to the main screen through a mechanical terminal when necessary.

The main screen 30 is provided with a connector 34 including a pin to form an insertion hole 36 on the side and exchange an image signal with the sub screen 40.

The auxiliary screen 40 is provided with another connector 44 which forms an insertion protrusion 46 at a side of the position corresponding to the insertion hole 36 and is connected to the connector 34 to exchange image signals. .

The sub screen 40 may be supplied with power separately from the main screen 30, and may be supplied with power of the main screen 30 through the connected connectors 34 and 44.

The insertion protrusion 46 of the sub-screen 40 is inserted into the insertion hole 36 of the main screen 30 by the user, and the connector 34 of the main screen and the connector 44 of the sub-screen are coupled and connected. In this case, the main screen 30 and the sub screen 40 may be combined and used as one screen.

4C illustrates that the auxiliary screen is inserted into the main body of the main screen and then slides out to be positioned on the side of the main screen.

The sub screen 40 is interpolated in the main body of the main screen 30 in a sliding manner so that the user presses or pulls out the sub screen 40 to be inserted into the main screen 30 or protrudes outward.

The cover 38 is formed on the edge of the main screen 30, but the side of the main screen 30, the image of the main screen 30 and the sub-screen 40 by a space in which the contact portion with the sub-screen 40 is separated Do not form a cover on the rim so that it is not displayed apart.

At this time, the auxiliary screen 40 is provided with a cover 49 at the edge except for the portion in contact with the main screen 30 and a protrusion 47 at the corner portion.

If you do not use the sub-screen (40) to interpolate and keep in the main screen (30). In case of use, when the main screen 30 slides out from the main body of the main screen 30, the sub screen 40 is located on the side of the main screen 30 and can be used as one screen.

5 is a flowchart of a dual screen display method according to an exemplary embodiment of the present invention.

The video signal processing means 20 inputs the video signal through the camera 10 or the external image source 12 and the decoder 14 while the screen controller 23 provided therein is initialized (S502). If it is (S504), it is determined whether the dual screen mode or single screen mode (S506).

In this case, data indicating the dual screen mode or the single screen mode may be included in the video signal, and the video signal processing means 20 may analyze the video signal to determine the video signal, and may select the dual screen mode or the single screen mode by the user's input. In this case, the video signal processing means 20 may detect and determine the same.

In the dual screen mode, the image signal processing means 20 determines whether the sub-screen 40 is connected to the main screen 30 to display the image on the sub-screen 40 (S508).

When the auxiliary screen 40 is connected, the video signal processing means 20 separates the input video signal into the video signal of the main screen 30 and the sub screen 40, and the video signal of the separated main screen 30. And control the respective screen controller 23 by processing the video signal of the sub screen 40 (S510).

Under the control of the screen controller 23, the main screen 30 and the sub-screen 40 appear to be processed separately from each other (S512), the sub-screen 40 is located on the side of the main screen 30 On one screen in which the main screen 30 and the sub screen 40 are integrated, an image (including a symbol or a character) to be displayed by the user can be largely displayed.

In the case of the single screen mode in step S506 or even in the dual screen mode, when the sub-screen 40 is not connected in step S508 and the image cannot be displayed on the sub-screen, the video signal processing means 20 inputs the input video signal. The main screen controller is controlled by processing a signal without separating the signal (S520).

Under the control of the main screen controller, the processed image is displayed on the main screen 30 without being separated (S522).

As described above, the main screen 30 and the sub screen 40 may be provided to adopt a large display screen, thereby increasing the price and limiting the size of the product.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, according to the present invention, an auxiliary screen is detachably provided on the side of the main screen in an electronic device equipped with a display device such as an MP3 player, a mobile communication terminal, a digital camera, and can be made compact and lightweight. It is easy to use, and the large screen can be used to display large sized images while reducing the increase in price.

Claims (9)

Image providing means for providing a video signal such as a camera or an external video source; Determining whether the provided video signal is a dual screen mode or a single screen mode, and processes the video signal according to the control, to control the main screen and the auxiliary screen in the dual screen mode, and to control the main screen in the single screen mode Image signal processing means; And Display the video signal under the control of the video signal processing means, and consists of at least one side of the main screen and at least one side of the main screen side by side, one image on the main screen and the auxiliary screen in the dual screen mode Including a display means to be displayed, The video signal processing means analyzes data indicating a dual screen mode or a single screen mode included in the video signal and / or analyzes a user input to determine whether the video signal is a dual screen mode. In the dual screen mode, it is determined whether or not the auxiliary screen is connected, and when the auxiliary screen is not connected, the video signal is displayed without being separated. When the auxiliary screen is connected, the video signal provided from the main screen and the auxiliary signal are auxiliary. And dividing the video signal of the screen and processing and displaying the separated video signal. delete The method of claim 1, The main screen and the sub-screen is a dual screen display system, characterized in that the LCD. The method of claim 1, The video signal processing means may include a frame buffer for storing an image which is a memory space for displaying an image on a main screen and an auxiliary screen; The frame buffer can be shared and read and written. A dual screen display system comprising two signal processing ICs each provided with a screen controller for controlling a main screen and a sub screen. The method of claim 1, The video signal processing means, in the dual screen mode, separates a video signal into a video signal of a main screen and an auxiliary screen, processes each divided video signal, and controls a screen controller with respect to the processed video signal. Signal processing IC, And two screen controllers for respectively controlling the main screen and the sub screen by the signal processing IC. The method of claim 1, The video signal processing means, in the dual screen mode, separates a video signal into a video signal of a main screen and an auxiliary screen, processes each separated signal, and controls one screen controller with respect to the processed video signal. Signal processing IC, And a screen controller for controlling the main screen and the sub screen by the signal processing IC. The method of claim 1, And the auxiliary screen is coupled to the side of the main screen by a hinge and rotates about a hinge axis. The method of claim 1, And the auxiliary screen is completely separated from the main screen, and is connected to the main screen through a mechanical terminal when necessary. The method of claim 1, And the sub-screen is interpolated in the main body of the main screen, and is slidably protruded to be positioned on the side of the main screen.

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