JP2000330536A - Liquid crystal multi-display display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display circuit capable of realizing a magnified display with an inexpensive constitution by deciding by which liquid crystal panel module of plural liquid crystal panel modules read-out picture data are displayed. SOLUTION: One of picture display data which are transferred from the picture transmitting part of a multi-display system is transferred through a picture signal line and is transferred to a frame memory write-in circuit 105 via an input data processing circuit 104 in a display device. The circuit 105 has a horizontal counter and a vertical counter in the inside of the circuit and sets the fetching range of input display data for a magnified display by the set data of an arrangement position setting means 101. The means 101 sets information data indicating at what positions display devices are positioned and holds the data. Then, the magnified display becomes possible on liquid crystal panels of plural display controllers from the same input display data only by preliminarily setting the set value of one kind of a display controller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-display system in which a plurality of liquid crystal monitors enlarge and display an image transmitted from an image transmission unit.

[0002]

2. Description of the Related Art A conventional multi-display system has a configuration as described in Japanese Patent Application Laid-Open No. 10-187109, "Multi-display System".
This conventional multi-display system will be described with reference to FIG.

In FIG. 15, reference numeral 240 denotes an image signal line, and reference numeral 241 denotes a control signal line.

In the operation of the conventional example, an image signal generating section 221 of an image transmitting section 220 edits video signals of a camera, a VTR, a PC, etc. in advance and continuously converts all image data to be displayed on a plurality of monitor sections. An image signal line 2 is sent from the image transmission unit 223 to the analog image signal of the obtained still image.
Send to 40. In order to control the monitor unit 201,
Monitor ID registration unit 224, program code generation unit 22
5. The data of the image frame number generation unit 226 and the data of the monitor control program memory 230 are transferred to the control signal synthesis unit 229.
The synthesizing paper and the synthesized digital control signal are synchronized by the synchronization adjustment unit 227 with the image data output from the image transmission unit 223 and transferred to the monitor unit 201.

[0005] Image data output from the image signal line 240 operates according to a control signal transferred from the control signal line 241. The image data is stored in the A / D converter 20
3, and is converted into digital image data.
4, the image memory 205a or the image memory 20
5b. The stored digital image data is read out via the switching operation unit 206 and displayed on the display unit 209 via the D / A converter 207.

As described above, the frame number of the image data, the ID of the monitor 201 to be displayed, and the like are transmitted as control signals in synchronization with the image data output from the image transmitter 220. Could be displayed.

FIG. 16 shows an image transmission unit 22 using ID data in a conventional multi-display system.
An operation flowchart as an example of an operation when the image data output from 0 is enlarged and displayed on the monitor unit 201 is shown.

The operation of the display device of the monitor unit 201 is 25
0: ID data is set in the monitor ID registration unit 224 of the monitor unit 201 (hereinafter, liquid crystal display device). 251:
The display screen resolution data of the liquid crystal display device is set. 2
52: Display data is input, and the input display mode / screen size is automatically determined. 253: Select the display data range part of the input display data and store it in the frame memory. 25
4: The display data is read from the frame memory, and is enlarged and displayed by the magnification for enlarged display. And above, 250-25
4 is performed, in each of the operations 251 to 254, setting data for screen display of the liquid crystal display device, a display data signal dedicated to the liquid crystal display device, data for specifying the range of display data to be taken into the frame memory, and enlargement for enlarged display. Rate data is needed. Therefore, it is necessary to add the same ID data and transmit the image data from the image transmitting unit 220 so that the ID data can be specified by the ID data set in the liquid crystal display device. This ID data is managed so as not to be mistakenly set in another liquid crystal display device.

[0009]

In the conventional multi-display system, since it is necessary to add a frame number and an ID number to each image data, only a still image can be transmitted.

Further, since it is necessary to attach the ID number of the corresponding display device to each display data, a complicated operation is required at the time of processing the display data.

Furthermore, since the means for continuously displaying the display data on one display device over a plurality of display devices has not been provided on the display device side, the operation of the display data distribution side is not required. There was a need to do it.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display circuit for realizing an enlarged display with an inexpensive configuration in a multi-display system comprising a plurality of liquid crystal displays.

In order to achieve the above object, the present invention provides a liquid crystal panel having M pixels in a horizontal direction and N pixels in a vertical direction, means for writing image display data to a frame memory, and a frame. Means for reading display data stored in the memory, means for performing enlargement processing for increasing display data when reading from or after reading from the frame memory, means for instructing a horizontal writing width to be written to the frame memory, Means for instructing a vertical writing width to be written in the memory, means for instructing an enlargement factor for increasing display data read from the frame memory, a microcontroller for setting a value in each of the means, and a liquid crystal display device. And a liquid crystal multi-display. Set the horizontal number data and the vertical count data of the liquid crystal display device constituting the i, the position coordinate data representing the positions of the liquid crystal display device, by entering the display data,
A display device for enlarging and displaying display data of a still image and a moving image is formed on the liquid crystal panel, and two or more display devices are provided.
That is to configure a multi-display system.

This makes it possible to enlarge and display one still or moving image data transferred from the image transmitting section on a plurality of display devices.

The configuration of the present invention is as follows.

In a liquid crystal multi-display system constituted by a plurality of liquid crystal panel modules, a first frame memory and a second frame memory are provided.
And means for writing image data to one of the second frame memories and reading image data from the other frame memory, and which of the plurality of liquid crystal panel modules displays the read image data. Is a liquid crystal multi-display system characterized by having an arrangement position setting means for determining the position. Further, each of the liquid crystal display devices having the above features and having the above liquid crystal panel module is also provided. The following is also a liquid crystal multi-display system provided with a liquid crystal display device.

In each liquid crystal panel display device of the liquid crystal multi-display system composed of a plurality of liquid crystal panel modules, image display data from an image transmitting unit is transferred via an image signal line, and input data in the display device is transmitted. Through a processing circuit, the data is transferred to a frame memory writing circuit having a horizontal counter and a vertical counter therein, transferred to a memory selection switching circuit, and transferred and written to a frame memory A or a frame memory B. The memory selection switching circuit selects another frame memory different from the frame memory A or the frame memory B to which the transfer and writing is performed by the frame memory switching signal from the frame memory reading circuit, and sends the selected frame memory to the frame memory reading circuit. The image display data is read and transferred, and in the frame memory read circuit, the image display data from the frame memory A or the frame memory B is converted into display data for enlarged display, transferred to a liquid crystal panel module and output. A liquid crystal display device which performs an enlarged display by a panel module, wherein an arrangement position setting means is provided.

The horizontal position data and vertical number data of the liquid crystal display device constituting the liquid crystal multi-display and position coordinate data indicating the position of the liquid crystal display device are set in the position setting means. It is also a liquid crystal display device.

In these liquid crystal display devices, different information data can be set in the arrangement position setting means of each liquid crystal display device, and input image display data other than the input image display data can be input without external control signal input. This is also a liquid crystal display device characterized in that it is enlarged and displayed on a liquid crystal panel.

In these liquid crystal display devices, a control signal interface circuit is provided.

These liquid crystal display devices are characterized in that data can be set to an arrangement position setting means in the liquid crystal display device via a control signal interface circuit.

In these liquid crystal display devices, a liquid crystal multi-display is characterized in that liquid crystal panel modules having different sizes can be connected and enlarged and displayed.

In each liquid crystal display device of this liquid crystal multi-display system, a screen size set value including an outer frame portion on a display screen side of each liquid crystal panel module of each liquid crystal display device is set and stored. Device.

[0024]

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a display device constituting the multi-display system of the present invention.

In FIG. 1, 101 is an arrangement position setting means, 102 is a microcontroller, 103 is a system memory, 104 is an input data processing circuit, 105 is a frame memory writing circuit, 106 is a memory selection switching circuit, and 107a and 107b are frames. Memory A, B, 10
Reference numeral 8 denotes a frame memory readout circuit, 109 denotes an output display timing signal generation circuit, and 110 denotes a liquid crystal panel module.

In FIG. 2, reference numeral 21 denotes an image signal source;
Denotes an image display data signal line output from the image signal source 21, and 23 to 25 denote liquid crystal display devices for displaying input display data signals on a liquid crystal panel.

In FIG. 3, reference numeral 301 denotes the display area size of the image signal source (1024 pixels horizontally, 768 lines vertically: XG
A), 302 denotes a display data area of 1 to 512 pixels in width and 1 to 384 lines in length, which is 1/4 of the image signal source display data, and 303 denotes a horizontal 513 which is 1/4 of the image signal source display data. A display data area of 〜１０1024 pixels and vertical lines of 1 to 384 lines, 304 is １ ／ of the image signal source display data
305 is a display data area of 1 to 512 pixels in the horizontal direction and 385 to 768 lines in the vertical direction.
4 is a display data area of 513 to 1024 pixels in width and 385 to 768 lines in height.
Each display area size (1024 horizontal pixels, 768 vertical lines:
XGA) of the liquid crystal display.

Next, a detailed operation will be described with reference to FIGS.

As shown in FIG. 2, when the display of the image signal source 21 is displayed on the liquid crystal displays 23 to 26 on a total of four liquid crystal multi-displays composed of two vertical planes and two horizontal planes, an image signal When the display resolution of the source 21 is equal to the display resolution of each of the liquid crystal displays 23 to 26, the display of the image signal source 21 is composed of two liquid crystal displays 23 to 26, two screens in the vertical direction and two screens in the horizontal direction. It is necessary to magnify the image twice in the vertical direction and twice in the horizontal direction on the liquid crystal multi-display.

Here, as shown in FIG. 3, the display resolution of the image signal source 21 shown in FIG.
1 is an XGA (1024 horizontal pixels, 768 vertical lines), and the display resolution of each of the liquid crystal displays 23 to 26 in FIG. 2 is, as shown in FIG. In the case of XGA (1024 horizontal dots, 768 vertical lines), each of the four liquid crystal displays has one quarter of the display of the image signal source.
(1024 horizontal pixels / 2 = 512 pixels, vertical 768 lines /
2 = 384 lines) are taken in and displayed twice (vertically and horizontally) twice (width 102).
By using 4 pixel dots and 768 vertical lines, the display size 301 of the image signal source (XGA: 1024 horizontal pixels,
768 vertical lines) to the size 306 of the liquid crystal display.
To 309, consisting of two surfaces in the vertical and two directions in the horizontal direction.
Liquid crystal multi display (2048 horizontal pixels, 15 vertical pixels)
(36 lines).

The detailed operation will be described with reference to FIG. 1 which is a block diagram showing the configuration of a liquid crystal display device constituting a liquid crystal multi-display for realizing this.

In FIG. 1, arrangement position setting means 101
Is the position of this liquid crystal display device in the liquid crystal multi-display, and the total display resolution (full display screen size) of the liquid crystal multi-display
Information data indicating how much display resolution (display screen size) is provided is set and held.

In this embodiment, assuming that the sizes of the liquid crystal panels constituting the liquid crystal multi-display are all the same, the information data to be set in the arrangement position setting means 101 is as follows.
(W, M, N).

Position data W indicating the position of the liquid crystal panel display area 306 at the upper left of the four-panel liquid crystal multi-display of FIG.
Is set to W = 1.

As data representing the overall display resolution of the four-panel liquid crystal multi-display of FIG. 3, information data indicating the number of liquid crystal panels constituting the liquid crystal multi-display in the horizontal and vertical directions is represented by M and N, where M = 2. , N = 2.

The ratio of the display resolution occupied by the liquid crystal panel display area 306 to the total display resolution of the four-screen liquid crystal multi-display of FIG. 3 indicates the number of liquid crystal panels constituting the liquid crystal multi-display in the horizontal and vertical directions. It can be shown from the information data M and N. In this embodiment, M =
Since 2, N = 2, this is the display resolution (= display resolution of the liquid crystal panel module 110) of the liquid crystal display device set in the memory setting in the system memory 103 or the storage means such as a register instead of this. From the number of horizontal display pixels and the number of vertical display lines,
The overall display resolution of the four-panel liquid crystal multi-display is determined by the number of horizontal display pixels * X = 102 of the liquid crystal display.
4 dots * 2 = 2048 dots, the number of display lines in the vertical direction of the liquid crystal display device * Y = 768 lines * 2 =
1536 lines.

The overall display resolution (2048 dots * 1536 lines) of the four-panel liquid crystal multi-display,
Based on the position data W = 1, the arrangement position setting means 101 sets and holds information data of (W, M, N) = (1, 2, 2) by a circuit such as a dip SW.

In FIG. 1, one image display data transferred from the image transmission unit of the multi-display system is:
The data is transferred via the image signal line, and is transferred to the frame memory writing circuit 105 via the input data processing circuit 104 in the display device. Here, the frame memory writing circuit 105 has a horizontal counter and a vertical counter therein, sets the input display data capture range for enlarged display by setting data of the arrangement position setting means 101, and sets the internal horizontal A counter and a vertical counter count and select an input display data portion for enlarged display of an input horizontal display region signal and an input vertical display region signal for inputting an effective display region of input display data, and the memory selection switching circuit 106 Transfer, frame memory A: 10
7a or the frame memory B: 107b.

When the information data (W, M, N) = (1, 2, 2) of the arrangement position setting means 101, the input display data portion to be enlarged and displayed on the liquid crystal panel display area 306 in FIG. Of the image display data, the portion 302 in FIG. 3 (horizontal 1 to 512 pixel dots, vertical 1 to 384 lines) is selected and transferred by the frame memory writing circuit 105 in FIG.

The memory selection switching circuit 106 selects another frame memory different from the frame memory A: 107a or the frame memory B: 107b in which the transfer writing is performed by the frame memory switching signal from the frame memory reading circuit 108. Then, the image display data is read and transferred to the frame memory reading circuit 108, and the image display data from the frame memory A: 107a or the frame memory B: 107b is enlarged and displayed by the frame memory reading circuit 108. Is converted to display data (double in the vertical direction and double in the horizontal direction), transferred to the liquid crystal panel module 110, and enlarged and displayed on the liquid crystal panel module 110.

The output timing signal generation circuit 109 generates a display timing signal for the liquid crystal panel module 110 and a timing signal for reading display data from the frame memory.
Output to

There are two frame memories, the frame memory A: 107a and the frame memory B: 107b,
For example, when the frame memory A is read and displayed, the input display data is written into the other frame memory B, and when the frame memory B is read and displayed, the other display is displayed. Frame memory A
This is for writing the input display data to the.

The microcontroller 102 sets the setting information data set in the arrangement position setting means 101 and the liquid crystal display display device set in the memory setting in the system memory 103 or the storage means such as a register instead of this. The total display resolution of the four-screen liquid crystal multi-display is calculated from the number of horizontal display pixels and the number of vertical display lines which are the display resolution (= display resolution of the liquid crystal panel module 110) data, and the input data processing circuit in the display device. The display screen size of the input display data signal determined in step 104 and a division operation (total display resolution of the four-screen liquid crystal multi-display / display screen resolution of the input display data signal) are used to calculate an enlargement ratio. In addition, arrangement position setting means 1
Based on the information data M and N indicating the horizontal and vertical numbers of the liquid crystal panels constituting the liquid crystal multi-display in the setting information data set to 01, the input display data signal display data capture range is arithmetically selected (input display). The data range width is divided by M and N and divided, and the divided input display data range is selected by the position data W).

The setting information data to the arrangement position setting means 101 in the liquid crystal panel display areas 307, 308, and 309 other than the liquid crystal panel display area 306 in the overall display resolution of the four-screen liquid crystal multi-display of FIG. W, M,
N) = (2,2,2), (3,2,2), (4,2,2)
2), and the liquid crystal panel display areas 307 and 30 in FIG.
As the input display data part to be enlarged and displayed on 8, 309,
Of the input image display data, 303 portions (513 to 1024 pixel dots in width, 1 to 384 lines in height) and 304 portions (1 to 512 pixel dots in width, 385 height in FIG. 3) of FIG.
1 to 768 lines) and 305 portions (513 to 1024 horizontal pixels dots, 385 to 768 vertical lines) are selected and transferred by the frame memory writing circuit 105 in FIG.

With the above operation, the same display data signal 22 output from the image signal source 21 is input to each of the liquid crystal display devices 23 to 25, and each of the liquid crystal display devices 23 to 25 having the same configuration has its own structure. Setting information data set in the arrangement position setting means 101, (W, M,
N) = (1, 2, 2), (2, 2, 2), (3, 2,
2) According to (4, 2, 2), each liquid crystal display display device 23 to 25 is output from the same display data signal 22.
The display data of the part to be magnified and displayed on the liquid crystal panel is captured and magnified.

The position data W is a screen configuration position of the liquid crystal multi-display, and the position data W is based on the upper left position as a base point.
Assuming that W = “1” and “2, 3, 4...” In the leftward direction, information data M and N indicating the number of liquid crystal panels constituting the liquid crystal multi-display in the horizontal and vertical directions are used.
It can also be converted to horizontal and vertical position coordinates (X, Y).

For example, when the horizontal number M = 2 and the vertical number N = 2, W = “1”, “2”, “3”, “4” is obtained by converting the horizontal and vertical position coordinates (X, Y) = (1,1), (2,1),
(1, 2) and (2, 2).

FIG. 14 is a flowchart showing the operation of the liquid crystal display device according to the present invention during the enlarged display operation.

In FIG. 14, first, 140: display screen resolution data of the liquid crystal display device is set. 141: The arrangement position setting means sets information data indicating the number (M, N) of the liquid crystal display devices constituting the liquid crystal multi-display in the horizontal and vertical directions and the arrangement position (X, Y) of the liquid crystal display device. 14
2: A display data signal is input, and the input display mode / screen size is automatically determined. 143: The input display data is (M,
N), the divided display range is selected by (X, Y) and stored in the frame memory. 14
4: The display data is read from the frame memory, and the display is enlarged by the enlargement display magnification data. The magnification data for enlarged display is the information data (X,
Y, M, N) and the data of the input display mode and the screen size automatically determined in 142, the enlargement display magnification data is calculated and generated by the microcontroller 102 in the liquid crystal display device.

As described above, when the liquid crystal display device displays an enlarged image,
The operation of 140 to 145 is performed, and the input of the signal data from the outside to the liquid crystal display device is, except for the input of the display data signal, the display screen resolution data setting at 140 and 141 in the operation flowchart. , Only the setting of the information data (X, Y, M, N) to the arrangement position setting means,
No setting data from the external image signal source 21 is required.

For this reason, a plurality of the liquid crystal display devices of the present invention are prepared, and each liquid crystal display device has display screen resolution data,
A liquid crystal multi-display device capable of enlarging and displaying an input display data signal by inputting a display data signal only by setting information data (X, Y, M, N) to the arrangement position setting means in advance. Display can be configured.

As a specific setting method of the set value in the arrangement position setting means 101 in FIG. 1, a plurality of small DIP switches, short switches, DIP switches capable of setting hexadecimal values, and the like are prepared. Can be set by combining them. In addition, the setting can be performed using a memory element that can be written once (for example, a ROM) or a memory element that can be rewritten a plurality of times.

Further, the display resolution (= display resolution of the liquid crystal panel module 110) of the liquid crystal display device set in the memory setting in the system memory 103 or the storage means such as a register in place of the memory is converted into a small size. DIP switch and short switch, 1
By preparing or combining a plurality of dip switches capable of setting hexadecimal values, a preset setting, a rewritable register, a one-time writable memory element (for example, ROM), or a plurality of It can be set using a memory element that can be rewritten once.

As described above, in order to explain the basic operation of the present invention, for simplicity, the display size of the image signal source and the size of each liquid crystal display of the liquid crystal multi-display are set to the same XGA, and the four-screen liquid crystal multi-display is used. However, according to the configuration of the present invention, even if the display size of the image signal source and the size of each liquid crystal display of the liquid crystal multi-display are different, the number of the liquid crystal displays constituting the liquid crystal multi-display is not four. However, by setting the setting value of the arrangement position setting unit 101 in FIG. 1 and the control of the microcontroller 102 to values in consideration of the display size of the input image signal source and the enlarged display of the liquid crystal multi-display, An effect similar to that of the basic operation of the present invention can be obtained.

In addition to the present embodiment, when the resolution of the input display data is different from the size of each liquid crystal panel constituting the liquid crystal multi-display, the input data processing circuit 104 in the display device is provided with the input display data. From the signal
The resolution (display mode) of the input display data is automatically determined.

Next, as Embodiment 2, an embodiment of the present invention will be described in detail with reference to FIG.

FIG. 11 is a block diagram showing the configuration of a display device constituting the multi-display system of the present invention. As shown in FIGS. 2 and 3, the multi-display system is composed of four display devices.

In FIG. 11, 131 is an arrangement position setting means, 132 is a microcontroller, 133 is a system memory, 134 is an input data processing circuit, 135 is a frame memory writing circuit, 136 is a memory selection switching circuit, and 136a and 137b are frame memories. Memory A, B, 13
8 is a frame memory readout circuit, 139 is an output display timing signal generation circuit, 130 is a liquid crystal panel module, 121 is an image signal source, and 122 is an image signal source 121
Are image display data signal lines to be output.
5 is a liquid crystal display device for displaying an input display data signal on a liquid crystal panel, 127 is a control signal line, and 128 is a control signal line.
Denotes a control signal interface unit.

In FIG. 11, the liquid crystal multi-display system supplies a video signal from an image signal source 121 to a plurality of liquid crystal display devices 123 to 125 via an image display data signal line 122 to display the same.

In FIG. 11, arrangement position setting means 131
Is the position of this liquid crystal display device in the liquid crystal multi-display, and the total display resolution (full display screen size) of the liquid crystal multi-display
Information data indicating how much display resolution (display screen size) is provided is set and held. As a method of setting the information data in the arrangement position setting means 131, a setting signal is sent from the image signal source 121 via the control signal line 127 via the control signal interface unit 128 and the microcontroller 132. Is done.

One image display data transferred from the image transmission unit of the multi display system is an image signal line 1
22 through the input data processing circuit 134 in each display device.
5 is transferred. Here, the frame memory writing circuit 135 has a horizontal counter and a vertical counter inside,
According to the setting data of the arrangement position setting means 131, an input display data capturing range for enlarged display is set,
The internal horizontal counter and vertical counter are used to count and sort the input display data part for enlarged display of the input horizontal display area signal and input vertical display area signal for inputting the effective display area of input display data, and to switch memory selection. The data is transferred to the circuit 136 and transferred to the frame memory A: 137a or the frame memory B: 137b.

In the case where the information data (W, M, N) = (1, 2, 2) of the arrangement position setting means 131, the portion 302 of the input image display data shown in FIG. , 1-384 lines) are selected and transferred by the frame memory writing circuit 135 in FIG.

The memory selection switching circuit 136 selects another frame memory different from the frame memory A: 137a or the frame memory B: 137b in which the transfer and writing is performed by the frame memory switching signal from the frame memory reading circuit 138. Then, the image display data is read and transferred to the frame memory readout circuit 138, and the image display data from the frame memory A: 137a or the frame memory B: 137b is enlarged and displayed by the frame memory readout circuit 138. Is converted to display data (double in the vertical direction and double in the horizontal direction), transferred to the liquid crystal panel module 130, and enlarged and displayed on the liquid crystal panel module 130.

The output timing signal generation circuit 139 generates a display timing signal for the liquid crystal panel module 130 and a timing signal for reading display data from the frame memory.
Output to

There are two frame memories, frame memory A: 137a and frame memory B: 137b.
For example, when the frame memory A is read and displayed, the input display data is written into the other frame memory B, and when the frame memory B is read and displayed, the other display is displayed. Frame memory A
This is for writing the input display data to the.

The microcontroller 132 sets the setting information data set in the arrangement position setting means 131 and the memory setting in the system memory 133 or the liquid crystal display device set in the storage means such as a register instead of this. The overall display resolution of the four-screen liquid crystal multi-display is calculated from the number of horizontal display pixels and the number of vertical display lines, which are the display resolution (= display resolution of the liquid crystal panel module 130) data, and the input data processing circuit in the display device. The display screen size of the input display data signal determined in 134 and a division operation (the overall display resolution of the four-screen liquid crystal multi-display / the display screen resolution of the input display data signal) are used to calculate the enlargement ratio. In addition, arrangement position setting means 1
Position data W in the setting information data set to 31
, Select the input display data signal display data capture range by calculation (divide the input display data range width by M and N and divide it, and select the divided input display data range by position data W) (these display data By the above operation, the setting information data to the arrangement position setting means 131 of each display device is set once via the control signal line 127, whereby each display device is The input display signal can be easily enlarged and displayed.

By rewriting and changing the setting information data to the arrangement position setting means 131 of each display device via the control signal line 127, the input display signal of each display device can be displayed in the same size or enlarged. The rate can be changed and various display controls can be realized.

Next, as a third embodiment, an enlarged display of input display data to a total of 16 liquid crystal multi-displays composed of four screens in the vertical direction and four screens in the horizontal direction will be described.

In FIG. 4, reference numeral 401 denotes an image signal source;
Reference numeral 02 denotes an image display data signal line output from the image signal source 401, and reference numerals 403 to 418 denote liquid crystal display devices that display input display data signals on a liquid crystal panel.

In FIG. 5, reference numeral 501 denotes the display area size of the image signal source (640 pixels in width, 480 lines in height: VGA)
And the horizontal 16 which is 1/16 of the image signal source display data
A display data area of 0 pixels and 120 vertical lines is shown, and 502 to 517 constituting a total of 16 liquid crystal multi-display screens composed of 4 vertical and 4 horizontal planes have respective display area sizes (640 horizontal). Pixels, vertical 480 lines: VG
3A shows a liquid crystal display display area.

FIG. 6 shows an input horizontal synchronizing signal and an input horizontal display area signal, and shows a portion of the input horizontal display area signal which is written into the frame memory by each of the four liquid crystal display devices in the horizontal direction.

FIG. 7 shows an input vertical synchronizing signal and an input vertical display area signal, and shows a portion of the input vertical display area signal which is written in the frame memory by each of the four liquid crystal display devices in the vertical direction.

The detailed operation will be described below with reference to FIGS.

In FIG. 4, an image signal source 401 outputs a display data signal 402, and liquid crystal display devices 403 to 418 having 16 planes output the same display data signal 4.
Enter 02.

The internal configuration of the liquid crystal display devices 403 to 418 is the same as that of FIG. 1 described above, and the information data set in the arrangement position setting means 101 includes the arrangement position (horizontal coordinate position, vertical position) of each liquid crystal display device. (X, Y) indicating the coordinate position) and the total number (M, M) of a total of 16 LCD multi-display screens composed of 4 vertical and 4 horizontal screens.
N) = (4, 4), and is set to (X, Y, M, N). As a result, the information data set in the arrangement position setting means 101 of the liquid crystal display device 403 at the upper left of the screen of the liquid crystal multi-display of 16 screens composed of 4 screens in the vertical direction and 4 screens in the horizontal direction are (X, Y, M, N) = (1,
1, 4, 4), and the information data of the other liquid crystal display devices 404 to 418 are (2, 1, 4, 4).
4), (3,1,4,4), (4,1,4,4),
(1,2,4,4) (2,2,4,4), (3,2,4)
(4,4), (4,2,4,4), (1,3,4,4)
(2,3,4,4), (3,3,4,4), (4,3,4)
4,4), (1,4,4,4) (2,4,4,4),
(3, 4, 4, 4) and (4, 4, 4, 4).

In FIG. 5, the image signal source 401 has a display area size (640 pixels horizontally, 480 lines vertically: VG
A) The display data 501 is output, and from the total number of screens (M, N) of the liquid crystal multi-display (M, N) = (4, 4), the display screen data input by the liquid crystal panel display devices 403 to 418 are display data. 501 vertical 480 lines / 4
= Display data of 120 vertical lines and 640 horizontal pixels / 4 = 160 horizontal pixels.
Assuming that the display resolution of the liquid crystal display screens 502 to 517 of 418 is (640 pixels in width and 480 lines in height: VGA), input display data (160 pixels in width and 120 lines in height) written in the frame memory by each liquid crystal panel display device.
Is enlarged four times in each of the vertical and horizontal directions, so that it can be enlarged and displayed on a liquid crystal multi-display composed of liquid crystal display screens 502 to 517 (2048 horizontal pixels, 1920 vertical lines).

In FIG. 6, information data (X, Y, M,
N) where X = 1 is set for the liquid crystal panel display device (4
03, 407, 411, and 415) are liquid crystal panel display devices (404, 408, 412, and 404) in which display data of an area of 1 to 160 dots of an input horizontal display area signal for 640 dots is set to X = 2. 416) is 161 to 32
The display data of the area of 0 dot is a liquid crystal panel display device (405, 409, 413, 41) in which X = 3 is set.
7) displays the display data of the area of 321 to 480 dots,
The liquid crystal panel display device (406,
410, 414, and 418) use display data in an area of 481 to 640 dots.

In FIG. 7, information data (X, Y, M,
N) is set to Y = 1 and the liquid crystal panel display device (4
03, 404, 405, and 406) are liquid crystal panel display devices (407, 407) in which the display data of the area of 1 to 120 lines of the input vertical display area signal for 480 lines is set to Y = 2, 3, and 4. 408, 409, 410), (41
1, 412, 413, 414), (415, 416, 4
17, 418) are 1 of the input vertical display area signal, respectively.
21-240 lines, 241-360 lines, 361-
The display data in the area of 480 lines is used.

6 and 7, the liquid crystal panel display device 403 is shown.
418 are the display resolution of each input display data and the display resolution of each of the liquid crystal display screens 502 to 517 set in the memory of the system memory 103, or the number of horizontal display pixels set in the storage means such as a register instead of this. , Vertical display line number (640 horizontal pixels, 4 vertical pixels)
80 lines: VGA), the enlargement ratio (4 times in the vertical direction and 4 times in the horizontal direction) is calculated, and the frame memory readout circuit 108
The image display data is read and transferred to the frame memory readout circuit 108, and the frame memory A: 1
07a or the image display data from the frame memory B: 107b is converted into display data for enlarged display (4 × in the vertical direction and 4 × in the horizontal direction), transferred to the liquid crystal panel module 110, and outputted. Enlarge the display.

Next, as a fourth embodiment, an enlarged display of input display data on a total of 13 LCD multi-displays constituted by two types of liquid crystal display devices having different display resolutions will be described.

In FIG. 8, reference numeral 801 denotes an image signal source;
Reference numeral 02 denotes an image display data signal line output from the image signal source 801. Reference numerals 803 to 815 denote liquid crystal display devices that display input display data signals on a liquid crystal panel. 8
03 has the same dot pitch as the other liquid crystal displays 804 to 815, and
The display resolution of the liquid crystal display of No. 3 is other than 804-
It is assumed that the LCD 815 has twice the display resolution in the vertical and horizontal directions.

In FIG. 9, reference numeral 901 denotes the display area size of the image signal source (640 pixels horizontally, 480 lines vertically: VGA)
902 to 914 indicate the liquid crystal display display resolutions of the above-described 803 to 815 liquid crystal display device, the liquid crystal display display resolution 902 of the 803 liquid crystal display device is (1280 horizontal pixels, 960 vertical lines), and 804 to 815 The liquid crystal display display resolutions 903 to 914 of the liquid crystal display device are (width 64)
0 pixels, 480 vertical lines: VGA).

The detailed operation will be described below with reference to FIGS.

In FIG. 8, the liquid crystal display devices 803 to 815 receive the same image display data signal output from the image signal source 801 via the image display data signal line 802.

The internal configuration of the liquid crystal display devices 803 to 815 is the same as that shown in FIG. 1, and the information data set in the arrangement position setting means 101 includes the arrangement position (horizontal coordinate position, vertical position) of each liquid crystal display device. (Coordinate position) is indicated by (X, Y), and the total number of screens (M, N) of the 13 liquid crystal multi-displays is smaller than the total display resolution of the liquid crystal multi-display by the minimum display resolution of the liquid crystal multi-display. Converted on the display, (M, N) = (4, 4) on the four surfaces in the vertical direction and the four surfaces in the horizontal direction, and the information data set in the arrangement position setting means 101 is (X, Y, M) , N).

As a result, the liquid crystal display device 803 at the center of the screen of the 13 liquid crystal multi-displays
Has a display resolution of a total of four screens twice as long as the other liquid crystal display devices 804 to 815 and twice as much as the horizontal direction. , (2,2,4
4), (3,2,4,4), (2,3,4,4),
(3, 3, 4, 4), which occupies the information data, but the display resolution of the liquid crystal display 803 and (M, N)
(M, N) = (2, 2) by setting the value to obtain the total display resolution of the liquid crystal multi-display. Also,
The arrangement position (horizontal coordinate position, vertical coordinate position) (X, Y) indicates an intermediate position between “1” and “2” by “F−1” in order to indicate a position that is half the display resolution of the liquid crystal display device 803 itself.
= E ", the intermediate position between" 2 "and" 3 "is" F-2 = D ",
The intermediate position between “3” and “4” is represented as “F−3 = C”, and (E, E, 2, 2) is used as information data for the liquid crystal display 803.

The information data set in the liquid crystal display device other than the liquid crystal multi-display 803 is, for example, the information data set in the arrangement position setting means 101 of the upper left liquid crystal display device 804 is (X,
Y, M, N) = (1, 1, 4, 4), and the other information data of the liquid crystal display devices 805 to 815 are (2, 1, 4, 4), (3, 1, 4, 4) ), (4,
1,4,4), (1,2,4,4), (4,2,4,4)
4), (1,3,4,4), (4,3,4,4),
(1,4,4,4) (2,4,4,4), (3,4,4)
4,4) and (4,4,4,4).

The image signal source 801 shown in FIG. 9 has a display area size (640 pixels horizontally, 480 lines vertically: VG
A) The display data 901 is output, and from the total number of screens (M, N) of the liquid crystal multi-display (M, N) = (4, 4), the display screen data input by the liquid crystal panel display devices 804 to 815 are display data. 801 vertical 480 lines / 4
= 120 vertical lines, 640 horizontal pixels / 4 = 160 horizontal pixels are the minimum display data, and the display screen data input by the liquid crystal panel display device 803 is stored in the system memory 103 in the liquid crystal panel display device 803, or Based on the number of horizontal display pixels and the number of vertical display lines (1280 horizontal pixels, 960 vertical lines) set in the storage means such as a register instead of this, 640 horizontal pixels * {1280 horizontal pixels /
(1280 * 2｝ = 320 horizontal pixels, 480 vertical lines *
{Vertical 960 lines / (vertical 960 lines * 2)} = vertical 24
Write 0 line to the frame memory.

The aforementioned liquid crystal panel display devices 804 to 815
When the display resolution of the liquid crystal display screens 903 to 914 is (640 pixels horizontally, 480 lines vertically: VGA),
The input display data (160 horizontal pixels, 120 vertical lines) written into the frame memory by each liquid crystal panel display device is
The display is enlarged four times horizontally and the liquid crystal panel display device 80
3 is the input display data (horizontal 3
The liquid crystal display screens 902 to 91 are displayed by enlarging the display of 20 pixels and 240 lines vertically) twice vertically and horizontally.
4 (2048 horizontal pixels, 1920 vertical lines) can be enlarged and displayed on a liquid crystal multi-display.

As described above, the enlargement display of the liquid crystal multi-display has been described. As shown in FIG. 10, when the screen display data of the image signal source is enlarged twice in the vertical direction and twice in the horizontal direction, If the liquid crystal display panel constituting the display screen of the liquid crystal multi-display has an outer frame portion other than the display area, the continuity of the display at the joints of the liquid crystal displays, such as a display without frame correction as shown in FIG. Is damaged, and the display becomes unnatural. Therefore, in the present invention, in order to improve the unnaturalness of the display, a memory setting in the system memory 103 inside the liquid crystal panel display device or a horizontal setting which is set in a storage means such as a register instead of the memory is set. The setting data values of the number of pixels in the direction display and the number of lines in the vertical direction are converted to the outer frame area other than the display area on the liquid crystal display panel by the dot pitch size of the liquid crystal display panel and added to the size data of the liquid crystal display panel Data value. Thus, the display can be improved so that the display becomes natural at the joint between the liquid crystal displays, as in the display with frame correction as shown in FIG.

In the display without frame correction shown in FIG. 10, the set data values of the number of horizontal display pixels and the number of vertical display lines of the liquid crystal display device are shown in FIG.
x and Dy.

In the display with frame correction shown in FIG. 10, the area of the frame (P: outer frame width, Q: outer frame vertical width) outside the display screen of the liquid crystal panel module shown in FIG. 13 is effectively displayed. This can be realized by setting (Dx + P) and (Dy + Q) added to the area as setting data values of the number of horizontal display pixels and the number of vertical display lines of the liquid crystal display device.

[0094]

As is apparent from the above description, according to the embodiment of the present invention, it is possible to set a plurality of display control devices from the same input display data only by presetting one type of display control device. Since an enlarged display can be performed on the liquid crystal panel, there is an effect that the liquid crystal multi-display can be provided at low cost. In addition, it is only necessary to distribute the same input display data, and there is no need to perform operations such as division of display data on the distribution side, and there is an effect that a liquid crystal multi-display system that is easy to use can be configured.

[Brief description of the drawings]

FIG. 1 is a configuration diagram for explaining an embodiment of a liquid crystal display control device according to the present invention.

FIG. 2 is a configuration diagram of a four-screen liquid crystal multi-display.

FIG. 3 shows input display data and enlarged display data of a liquid crystal multi-display.

FIG. 4 is a configuration diagram of a 16-screen liquid crystal multi-display.

FIG. 5 shows input display data and enlarged display data of a liquid crystal multi-display.

FIG. 6 shows input horizontal display data.

FIG. 7 shows input vertical display data.

FIG. 8 is a configuration diagram of a 13-screen liquid crystal multi-display.

FIG. 9 shows input display data and enlarged display data of a liquid crystal multi-display.

FIG. 10 is a display image of a liquid crystal multi-display correction screen.

FIG. 11 is a configuration diagram for explaining an embodiment of a liquid crystal display control device according to the present invention.

FIG. 12 shows a display area range setting method according to the present invention.

FIG. 13 shows a display area range setting method for correction display according to the present invention.

FIG. 14 is an operation flowchart of the liquid crystal display control device according to the present invention.

FIG. 15 is a configuration diagram of a conventional liquid crystal multi-display.

FIG. 16 is a flowchart of a conventional liquid crystal multi-display operation.

[Explanation of symbols]

21 image signal source, 22 display data signal, 23, 2
4, 25, 26: liquid crystal panel display device, 101: arrangement position setting means, 102: microcontroller, 103:
System memory, 104: input data processing circuit, 10
5: frame memory writing circuit 106: memory selection switching circuit 107a: frame memory A
107b: Frame memory B, 108: Frame memory readout circuit, 109: Output display timing signal generation circuit, 110: Liquid crystal panel module, 121: Image signal source, 122: Display data signal, 123, 124,
125, 126: liquid crystal panel display device, 127: control signal line, 128: control signal interface unit, 131
... arrangement position setting means 132 ... microcontroller 133 ... system memory 134
Input data processing circuit, 135 ... frame memory writing circuit, 136 ... memory selection switching circuit, 137a ... frame memory A, 137b ... frame memory B, 138 ...
Frame memory readout circuit, 139 ... output display timing signal generation circuit, 130 ... liquid crystal panel module,
301 ... input screen display data, 302, 303, 30
4,305... Each display device capture data range, 306,
307, 308, 309 ... display screen size of each display device,
401: image signal source, 402: display data signal, 4
03 to 418: liquid crystal panel display device, 501:
Input screen display data, 502 to 517: Display screen size of each display device, 801: Image signal source, 802: Display data signal, 803 to 815: Liquid crystal panel display device, 901: Input screen display data, 902 to 914 ...
Each display device display screen size, 201 monitor unit, 20
2. Image input unit, 203 A / D, 204 Storage selection unit, 205a, 205b Image memory (1), image memory (2), 206 Switching operation unit, 207 D
/ A, 208: display unit, 209: control signal receiving unit,
210: decoding unit, 211: reception control signal memory,
212: ID setting unit, 213: Monitor system memory, 214: Monitor control unit,
220: Image transmission unit, 221: Image signal generation unit, 2
23: image transmission unit, 224: monitor ID registration unit, 2
25: Program code generator, 226 ...
Frame number generation section, 227... Synchronization adjustment section, 228
... Control signal sending section, 229 ... Control signal synthesis section, 230 ...
Monitor control program memory, 231: system memory, 232: control unit, 240: image signal line, 241: control signal line.

Continued on the front page (72) Inventor Hideki Kamimaki 1099 Ozenji Temple, Aso-ku, Kawasaki City, Kanagawa Prefecture Inside Hitachi, Ltd.System Development Laboratory (72) Inventor Satoshi Onuma 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Stock Company Hitachi Image Information System (72) Inventor Tomohisa Kohiyama 1099 Ozenji Temple, Aso-ku, Kawasaki City, Kanagawa Prefecture Inside Hitachi, Ltd.System Development Laboratory (72) Inventor Tsutomu Furuhashi 1099 Ozenji Temple, Aso-ku, Kawasaki City, Kanagawa Hitachi, Ltd. (72) Inventor Tetsuo Takagi 292, Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside Hitachi Micro Software Systems Co., Ltd. (72) Tatsumi Mori 810 Shimo-Imaizumi, Ebina-shi, Kanagawa Hitachi, Ltd. F-term in the PC Division of the Works (reference) MM07 MM10

Claims (5)

[Claims] 1. A liquid crystal multi-display system comprising a plurality of liquid crystal panel modules, wherein a first frame memory and a second frame memory, and an image is stored in one of the first and second frame memories. Writing data and reading image data from the other frame memory; and arrangement position setting means for determining which of the plurality of liquid crystal panel modules should display the read image data. Liquid crystal multi display system. 2. The liquid crystal multi-display system according to claim 1, wherein said arrangement position setting means includes a horizontal number data and a vertical number data of said liquid crystal display device forming a liquid crystal multi-display.
A liquid crystal multi-display system, wherein position coordinate data representing an arrangement position of the liquid crystal display device is set. 3. The liquid crystal multi-display system according to claim 1, wherein said arrangement position setting means is provided in each of said plurality of liquid crystal modules, and enables different information data to be set in each of said arrangement position setting means. Characteristic LCD multi-display system. 4. The liquid crystal display device according to claim 1, further comprising a control signal interface circuit. 5. The liquid crystal multi-display system according to claim 4, wherein data can be set to said arrangement position setting means via said control signal interface circuit.