JP3374806B2 - Multi-screen display system with fixed pixel display - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention 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 Conventionally, a multi-screen display system using a fixed pixel display device such as a plasma display is known. This multi-screen display system uses a plurality of displays to display one image, and each display has a resolution conversion function.

FIG. 7 is a block diagram showing the 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 conversion unit 2, a resolution conversion circuit 3, a plasma display module 4, an image output unit 5, a synchronization conversion unit 6, and a synchronization output unit 7.

The input image signal s is displayed on the display 1a.
And the input synchronization signal t. The input image signal s is A
It is input to the / D conversion unit 2 and the video output unit 5, and the output of the A / D conversion unit 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 conversion unit 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. Continuously, the output of the display 1b is
The other display (not shown) forming the multi-screen display system is similarly input.

As described above, in the conventional multi-screen display system, it is necessary to provide each of the plurality of displays forming the multi-screen display system with a resolution conversion function for converting the resolution of the input image signal. .

[0007]

However, since each of the displays has the 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 do it.

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

[0009]

To achieve the above object, a multi-screen display system using a fixed pixel display device according to the present invention includes a plurality of fixed pixel display devices including a master device and a slave device. In a multi-screen display system using a fixed pixel display device for forming a multi-screen and displaying one image by using the master device,
An A / D conversion unit for converting the digital signal into a digital signal and outputting the digital signal;
A resolution conversion circuit that converts the resolution of digital signals to the size for multi-screen display, and the resolution conversion circuit
The master memory that stores the converted signal and the resolution
When storing the signal converted by the conversion circuit, the master
The signal of the part displayed on the device is stored in the master memory
A master memory control unit for controlling the
Read data stored in the master memory
To display the image of the master device part by
After the resolution conversion of the spray module and the input sync signal,
Convert it so that it fits the image, and then convert the converted signal to the mass
A synchronous conversion unit for outputting to the memory control unit,
The signal converted by the resolution conversion circuit is transferred to the slave device.
Master digital output section for outputting to the
Output the signal converted by the slave device to the slave device.
A slave synchronization output unit, and the slave device is
Image after resolution conversion output from the digital output unit
Digital input section for signal input and master synchronization output
Corresponding to the image signal after resolution conversion output from the
A sync input section for inputting a sync signal, and the digital input section
A slave memory for storing the signal output from
When storing the signal output from the digital input section,
H According to the ID specified in advance by the screen position when the screen is displayed
The image data displayed on the slave device is
Slave memo controlled to be stored in reverb memory
Re-control unit and ID setting unit for setting the ID
And read the data stored in the second memory
The slave display module that displays the corresponding image.
And the signal output from the digital input section
Slave digital output section that outputs to the slave device of
The signal output from the synchronization input unit is used by another slave device.
It is characterized by having a slave synchronization output unit for outputting to .

With the above structure, the resolution converting means included only in the master display device among the plurality of fixed pixel display devices performs the resolution conversion to the size for displaying the multi-screen, and the plurality of fixed pixel display devices. To form a multi-screen and display one image. As a result, no complicated control is required in the entire multi-screen display system, and the system does not become expensive.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the 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 slave display group including one master display (master device) 11 and a plurality of slave displays (slave devices) 12 (only one is shown). .

This multi-screen display system 10 is composed of 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 conversion unit 13, a resolution conversion circuit 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, a digital display. It has an output unit 26, a synchronization input unit 27, and a synchronization output unit 28.

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 the 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 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 the data stored in the memory 15 and transferring it to the plasma display module 17, the image of the master display 11 portion can be displayed.

The signals converted by the resolution conversion circuit 14 are simultaneously output to the slave display 12 which is one of the slave display groups via the digital output section 18.

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

The resolution-converted image signal input from the digital output unit 18 to the slave display 12 is stored in the memory 22 via the digital input unit 21. At this time, the memory control unit 23 causes the ID (i
control is performed so as to store the signal of the portion set by the denaturation setting unit 24. That is, the memory control unit 23 controls according to the ID previously designated by the ID setting unit 24 according to the screen position during multi-screen display, and only 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 out and displayed on the plasma display module 25.

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

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

Next, an example of the flow of the 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 horizontal x and a vertical direction y. Multi screen 3 shown in
0 is formed by using four plasma displays, one master display 11 and three slave displays 12a to 12c, two vertically and horizontally.

To display 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 input to the master display 11 in the horizontal direction a and the vertical direction b 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 the resolution conversion, the image 31 (see FIG. 5) is divided into four parts having substantially equal areas corresponding to the multi-screen 30. Of these four divided images 32a to 32d, the 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)), the image 3
2c (see (c)) and the image 32d (see (d))
It is input to each of the three slave displays 12a, 12b, 12c and displayed on each display.
When inputting this image, each slave display 12a,
By setting the IDs of 12b and 12c respectively,
An image 32 is stored in the memory 22 of the slave display 12a.
b, an image 32c in the memory 22 of the slave display 12b, a memory 22 of the slave display 12c.
An image 32d is stored in each.

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
No. 1 is provided with the resolution conversion circuit 14, and the other slave display groups are not provided with the resolution conversion circuit 14. Therefore, the complicated control of the entire multi-screen display system is not required, and the system does not become expensive.

As a result, since the resolution conversion circuit built in each display in the conventional multi-screen display system can be omitted, when a multi-screen display system of the same scale is constructed, the system is cheaper and simpler. Can be configured.

In the above embodiment, an example using a plasma display is shown, but the fixed pixel display device is not limited to the plasma display,
Liquid crystal display and organic EL (electro-lum)
Alternatively, a display or the like may be used.

Further, the multi-screen can be formed by at least one master display 11 and one sleeve display 12, and the number of displays forming the multi-screen is not limited to four. It is 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 included only in the master display device among the plurality of fixed pixel display devices performs the resolution conversion to the size for displaying a multi-screen. Since a multi-screen is formed using a plurality of fixed pixel display devices to display one image,
It is possible to configure a cheaper and simpler system without requiring complicated control over the entire multi-screen display system and becoming an expensive system.

[Brief description of 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.

FIG. 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.

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

FIG. 6 is an explanatory diagram of a converted image 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]

10 Multi-screen display system 11 Master display 12 Slave display 13 A / D converter 14 Resolution conversion circuit 15 memory 16 Memory control section 17 Plasma display module 18 Digital output section 19 Synchronous converter 20 Synchronous output section 21 Digital input section 22 memory 23 Memory control section 24 ID setting section 25 Plasma display module 26 Digital output section 27 Synchronous input section 28 Synchronous output section 29 Input image 30 multi-screen 31, 32a-32d images s Input image signal t Input sync signal

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Claims (3)

(57) [Claims] 1. A multi-screen display system using a fixed pixel display device, wherein a multi-screen is formed using a plurality of fixed pixel display devices including a master device and a slave device to display one image, wherein the master device comprises: An A / D conversion unit that converts an input image signal into a digital signal and outputs the digital signal, a resolution conversion circuit that performs resolution conversion of the digital signal to a size for multi-screen display, and a signal that is converted by the resolution conversion circuit are stored. A master memory, and a master memory control unit for controlling the signal of the portion displayed on the master device to be stored in the master memory when storing the signal converted by the resolution conversion circuit, A master display module that displays an image of the master device portion according to the data stored in the master memory. And a synchronization conversion unit that converts the input synchronization signal so as to adapt to the image after the resolution conversion and outputs the converted signal to the master memory control unit, and the signal converted by the resolution conversion circuit to the slave. A master digital output unit for outputting to the device, and a master synchronization output unit for outputting the signal converted by the synchronization conversion unit to the slave device, wherein the slave device has a resolution output from the master digital output unit. A digital input unit to which the converted image signal is input, a synchronization input unit to which a synchronization signal corresponding to the resolution-converted image signal is output, which is output from the master synchronization output unit, and an output from the digital input unit. A slave memory for storing signals, and a signal output from the digital input section,
ID specified in advance by the screen position when displaying multiple screens
In accordance with the above, a slave memory control unit that controls the image data displayed by the slave device to be stored in the slave memory, an ID setting unit that sets the ID, and a data stored in the second memory. reading,
A slave display module that displays a corresponding image, a slave digital output unit that outputs the signal output from the digital input unit to another slave device, and a signal output from the synchronization input unit to another slave device A multi-screen display system with a fixed pixel display device. 2. The multi-screen display by the fixed pixel display device according to claim 1, wherein the master device comprises at least one slave device, and the slave device comprises at least one slave group or a plurality of slave groups. system. 3. The fixed pixel display device is a plasma display, a liquid crystal display, or an organic EL display.
The multi-screen display system using the fixed pixel display device according to claim 1 or 2 , which is a ray .