JP2001117544A - Multi-screen display system by fixed pixel display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-screen display system by a fixed pixel display system. SOLUTION: In the multi-screen display system by a fixed pixel display device for forming a multi-screen using plural plasma displays and displaying one picture, only a master plasma display 11 among the plural plasma displays is provided with a resolution conversion circuit 14 for performing a resolution conversion for a size in the case of displaying the multi-screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a multi-screen display system using a fixed pixel display device, and more particularly to a multi-screen display system using a fixed pixel display device including a plasma display.

[0002]

2. Description of the Related Art Hitherto, a multi-screen display system using a fixed pixel display device such as a plasma display has been known. This multi-screen display system displays one image using a plurality of displays, and each display has a resolution conversion function.

FIG. 7 is a block diagram showing a configuration of a conventional multi-screen display system. As shown in FIG. 7, a plurality of displays 1 forming a multi-screen display system
Each of a and 1b (only two are shown) has an A / D converter 2, a resolution converter 3, a plasma display module 4, a video output unit 5, a synchronous converter 6, and a synchronous output unit 7, respectively.

An input image signal s is displayed on the display 1a.
And an input synchronization signal t. The input image signal s is A
The signals are input to the / D converter 2 and the video output unit 5, and the output of the A / D converter 2 is input to the plasma display module 4 via the resolution conversion circuit 3. The input synchronization signal t is input to the synchronization conversion unit 6 and the synchronization output unit 7.

The output from the video output unit 5 of the display 1a is input to the A / D converter 2 and the video output unit 5 of the display 1b, and the output from the synchronous output unit 7 of the display 1a is the synchronous conversion of the display 1b. Input to the unit 6 and the synchronization output unit 7. Then, the output of the display 1b is
Input is similarly made on other displays (not shown) forming the multi-screen display system.

As described above, in the conventional multi-screen display system, each of the plurality of displays forming the multi-screen display system needs to be provided with a resolution conversion function for converting the resolution of an input image signal. .

[0007]

However, since each of the displays has a resolution conversion circuit 3, complicated control is required for the entire multi-screen display system, and as a result, an expensive system is avoided. I couldn't.

It is an object of the present invention to provide a multi-screen display system using a fixed pixel display device which does not require complicated control in the entire multi-screen display system and does not become an expensive system.

[0009]

In order to achieve the above-mentioned object, a multi-screen display system using a fixed pixel display device according to the present invention forms a multi-screen using a plurality of fixed pixel display devices and forms one image. In a multi-screen display system using a fixed pixel display device for displaying, only a master display device among the plurality of fixed pixel display devices has resolution conversion means for performing resolution conversion to a size when displaying the multi-screen. Features.

[0010] With the above arrangement, the resolution conversion means of only the master display device among the plurality of fixed pixel display devices converts the resolution to the size at the time of displaying the multi-screen. To form a multi-screen and display one image. This eliminates the need for complicated control in the entire multi-screen display system and prevents the system from becoming expensive.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a multi-screen display system using a fixed pixel display device according to an embodiment of the present invention. As shown in FIG. 1, the multi-screen display system 10 has a master display (master device) 11 and a slave display group including a plurality of slave displays (slave devices) 12 (only one is shown). .

The multi-screen display system 10 is constituted by a fixed pixel display device composed of a plasma display, and displays one image on a multi-screen formed by using a plurality of displays (master display 11 and slave display group). be able to.

The master display 11 includes an A / D converter 13, a resolution converter 14, and a memory (first memory) 1.
5, a memory control unit (first memory control unit) 16, a plasma display module (first display module) 17, a digital output unit 18, a synchronization conversion unit 19, and a synchronization output unit 20. The slave display 12 includes a digital input unit 21, a memory (second memory) 22, a memory control unit (second memory control unit) 23, an ID setting unit 24, a plasma display module (second display module) 25, An output unit 26, a synchronization input unit 27, and a synchronization output unit 28 are provided.

The input image signal s input to the master display 11 is converted into a digital signal by the A / D converter 13. The converted digital signal is supplied to a resolution conversion circuit 14.
And the resolution is converted by the resolution conversion circuit 14 to the size for multi-screen display. The signal after the resolution conversion is stored in the memory 15. At this time, the memory control unit 16 controls so that the signal of the portion displayed on the master display 11 is stored in the memory 15. By reading data stored in the memory 15 and transferring the data to the plasma display module 17, an image on the master display 11 can be displayed.

The signal converted by the resolution conversion circuit 14 is simultaneously output via the digital output unit 18 to the slave display 12 which is one of a group of slave displays.

The input synchronizing signal t input to the master display 11 is converted by the synchronizing converter 19 so as to adapt to the image after the resolution conversion. The converted synchronization signal is output to the memory control unit 16 and to the slave display 12 which is one of the slave display groups via the synchronization output unit 20.

The image signal after resolution conversion input from the digital output unit 18 to the slave display 12 is stored in the memory 22 through the digital input unit 21. At this time, the ID (i) is output by the memory control unit 23.
It is controlled so that the signal of the part set by the (dentification) setting unit 24 is stored. That is, the control by the memory control unit 23 is performed in accordance with the ID previously specified by the ID setting unit 24 based on the screen position at the time of the multi-screen display, and only the image data to be displayed on the slave display 12 is input to the memory 22. The data stored in the memory 22 is read and displayed on the plasma display module 25.

The resolution-converted image signal input to the digital input unit 21 is directly output to another slave display group of the slave display group via the digital output unit 26.

The synchronization signal corresponding to the image signal after the resolution conversion, which is input from the synchronization output unit 20 to the slave display 12, is output from the synchronization input unit 27 to the memory control unit 23 and the synchronization output unit 28, and is output from the synchronization output unit. 28
Outputs the input synchronization signal to other slave displays in the slave display group as it is.

Next, an example of the flow of a video signal will be described.
2 is an explanatory diagram showing an example of an input image, FIG. 3 is an explanatory diagram showing a display resolution of a plasma display, FIG. 4 is an explanatory diagram of a multi-screen, and FIG. 5 is an explanatory diagram of a resolution-converted image. is there. The input image 29 shown in FIG. 2 has a horizontal direction a and a vertical direction b, and the plasma display modules 17 and 25 shown in FIG. 3 have a display resolution in a horizontal direction x and a vertical direction y. Multi-screen 3 shown in
0 is formed by using two plasma displays, one master display 11 and three slave displays 12a to 12c, two in each of the vertical and horizontal directions.

When displaying an image on the multi-screen 30, first, resolution conversion is performed on the master display 11. As shown in FIG. 5, the resolution of an input signal in the horizontal direction a and the vertical direction b input to the master display 11 is converted into an image 31 in the horizontal direction 2x and the vertical direction 2y.

FIG. 6 is an explanatory diagram of a converted image stored in each memory after resolution conversion. As shown in FIG. 6, after resolution conversion, the image 31 (see FIG. 5) is divided into four parts having substantially the same area corresponding to the multi-screen 30. Of the four divided images 32a to 32d, image 3
2a (see (a)) is stored in the memory 15 of the master display 11 and displayed on the master display 11.

The image 32b (see (b)) and the image 3
2c (see (c)) and image 32d (see (d))
The data is input to each of the three slave displays 12a, 12b, and 12c, and is displayed on each display.
At the time of this image input, each slave display 12a,
By setting the IDs of 12b and 12c, respectively,
The image 32 is stored in the memory 22 of the slave display 12a.
b, the image 32c is stored in the memory 22 of the slave display 12b.
Stores the image 32d.

As described above, according to the present invention, in the multi-screen display system for displaying one image using a plurality of plasma displays, the master display 1
Only one has a resolution conversion circuit 14, and the other slave display groups do not have the resolution conversion circuit 14. Therefore, there is no need for complicated control in the entire multi-screen display system, and the system does not become expensive.

As a result, in the conventional multi-screen display system, the resolution conversion circuit built in each display can be omitted. Therefore, when a multi-screen display system of the same scale is configured, a more inexpensive and simple system can be used. Can be configured.

Although an example using a plasma display has been described in the above embodiment, the fixed pixel display device is not limited to a plasma display.
Liquid crystal displays and organic EL (electro-lum)
(display).

The multi-screen can be formed by at least one master display 11 and at least one sleeve display 12. The number of displays that form the multi-screen is not limited to four. Optional. Further, the number of master displays 11 is not limited to one.

[0029]

As described above, according to the present invention, the resolution conversion means of only the master display device among the plurality of fixed pixel display devices performs resolution conversion to the size when displaying a multi-screen. Since a plurality of fixed pixel display devices are used to form a multi-screen and display one image,
This does not require complicated control of the entire multi-screen display system, does not require an expensive system, and allows a cheaper and simpler system to be configured.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a multi-screen display system using a fixed pixel display device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an example of an input image.

FIG. 3 is an explanatory diagram showing a display resolution of a plasma display.

FIG. 4 is an explanatory diagram of a multi-screen.

FIG. 5 is an explanatory diagram of a resolution-converted image.

FIG. 6 is an explanatory diagram of converted images stored in each memory after resolution conversion.

FIG. 7 is a block diagram showing a configuration of a conventional multi-screen display system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Multi-screen display system 11 Master display 12 Slave display 13 A / D conversion part 14 Resolution conversion circuit 15 Memory 16 Memory control part 17 Plasma display module 18 Digital output part 19 Synchronization conversion part 20 Synchronization output part 21 Digital input part 22 Memory 23 Memory control unit 24 ID setting unit 25 Plasma display module 26 Digital output unit 27 Synchronization input unit 28 Synchronization output unit 29 Input image 30 Multi screen 31, 32a to 32d Image s Input image signal t Input synchronization signal

Claims (6)

[Claims] 1. A multi-screen display system using a fixed pixel display device for forming a multi-screen and displaying one image by using a plurality of fixed pixel display devices, wherein a master display device among the plurality of fixed pixel display devices is provided. And a resolution conversion means for converting the resolution to the size at which the multi-screen is displayed. 2. The apparatus according to claim 1, wherein said plurality of fixed pixel display devices include a slave display device to which a resolution conversion signal converted by said resolution conversion means is inputted.
2. A multi-screen display system using the fixed pixel display device according to item 1. 3. The multi-screen display system according to claim 2, further comprising one master display device and a slave display device group including a plurality of the slave display devices. 4. The multi-screen display system according to claim 2, wherein the resolution conversion signal is input based on an ID set for each of the slave display devices. 5. The multi-screen display system according to claim 1, wherein said fixed pixel display device is a plasma display. 6. An A / D converter for converting an input image signal into a digital signal, said resolution converter receiving a digital signal output from said A / D converter, and said resolution. A first memory for storing a converted signal; and a first memory for storing image data to be displayed on the master display device when storing the converted signal in the first memory.
A first memory module that reads data stored in the memory and displays a corresponding image; and converts an input synchronization signal to be compatible with the image after the resolution conversion. The slave display device, a second memory storing the resolution conversion signal, and a signal input from the synchronization conversion unit, and the slave display device receives a signal from the synchronous conversion unit when the multi-screen display is performed. A second memory control unit that controls the second memory so that image data to be displayed on the slave display device is stored in accordance with an ID specified in advance by a screen position; and an ID setting unit that sets the ID. Reading data stored in the second memory;
A second display module that displays a corresponding image, a digital output unit that outputs the resolution conversion signal, and a synchronization output unit that outputs a signal from the synchronization conversion unit. 5. A multi-screen display system using the fixed pixel display device according to any one of 5.