JPH0888820A - Multi-panel display system - Google Patents

Abstract

PURPOSE: To select optional video signals from plural input video signals, to display them at an optional position and to facilitate setting. CONSTITUTION: This multi-panel display system is constituted by providing an independent display function, a video magnification function for multi-panel display and a function for switching and displaying the plural video signals in respective PDP units. This system is composed of one master unit 2 and the other slave units 3, the master unit 2 is controlled by an external system controller 1, the master unit 2 controls its own unit and the slave units 3 and the respective units display an optional part in the plural input video signals S0. The plural input video signals are individually inputted to the respective units or selected in the master unit and delivered to the slave units. Further, some of the slave units are provided with a video selection function as sub master units and the number of connection lines among the units is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-panel display system for displaying a large screen image, which is used as a mass display for various events and concert halls.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 4-32 discloses a multi-screen display device.
As described in Japanese Patent No. 9593, the structure is almost as shown in FIG. In FIG. 10, 100 is a multi-screen display device, 106 is a display unit for displaying a part of the display unit, 101 is a video signal source, 102 is an external control device,
103 is an enlargement processing circuit, 104 is an enlargement control circuit, and 105
Is a display unit of the display unit 106, and 107 is a display unit number preset switch. The display units are chain-connected so that the video signal from the video signal source 101 and the control signal from the external control device 102 are supplied in parallel to the display unit 106 and the like. In such a configuration, the enlargement control circuit 104 or the like in each unit controls the enlargement processing circuit 103 or the like by the control signal from the external control device 102 and the display unit number preset by the display unit number preset switch 107. The enlarged display position is enlarged and displayed on the display unit 105 or the like, thereby performing multi-screen display. In this case, it is necessary to set the display unit number for each display unit and to control the enlargement position etc. through the control line chained to each display unit by the external control device, which makes the setting and operation complicated. . Further, it is not considered to select an arbitrary video signal from a plurality of input video signals and display it at an arbitrary position. Further, the display unit used here is designed exclusively for the multi-screen display device as described above, and lacks versatility.

[0003]

The present invention has been made in view of the above problems, and is a thin and lightweight panel display capable of selecting an arbitrary video signal from a plurality of input video signals and displaying it at an arbitrary position. It is to provide an economical multi-panel display system that can be easily set.

[0004]

A multi-panel display system is constituted by a PDP unit having a single display function, a video enlargement function for multi-panel display, and a function for switching and displaying a plurality of video signals. To do. The system consists of one master unit and other slave units, and an external system controller controls the master unit.
The master unit controls itself and the slave units such that each unit displays any portion of any video signal of the plurality of input video signals. The plurality of input video signals are individually input to each unit, or selected by the master unit and passed to the slave unit. Further, some of the slave units are provided with a video selection function as a sub-master unit to reduce the number of connecting lines between the units. The frame memory required for the video processing unit for enlarged display is
It can be shared with a frame memory for aspect ratio conversion or a frame memory for gradation display.

In order to specify the order of each unit, an ID is set for each unit and the I
The units are arranged in the order of D, or the arrangement is set by observing the test pattern displayed on each unit at the time of system initialization, and the data is used to display an arbitrary image at an arbitrary position.

[0006]

[Function] A PDP which is versatile and capable of displaying a single image
Since the (plasma display panel) unit constitutes a multi-panel display system, a display having a screen of an arbitrary size can be easily constructed. Further, since it has a function of switching a plurality of input video signals, it is possible to display by freely combining video images.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multi-panel display system according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic block diagram of one embodiment of a multi-panel display system according to the present invention. 1 is a system controller, 2 is a master unit,
Reference numeral 3 is a slave unit, S0 is an input video signal consisting of a plurality of, for example, four video signals, C0 is a control signal from the controller 1, and C1 is a control signal bus. FIG. 2 is a detailed block diagram of the master unit 2. Reference numeral 21 is a video selection unit, 22 is a video processing unit, 23 is a PDP, 24 is a control unit, S1, S2,
Each of S3 and S4 is one of four input video signals S0. The slave unit 3 has a configuration in which the control signal C0 is removed from the master unit in FIG.

When the video input desired to be displayed, the display position and the screen size are designated from the system controller 1, the control unit 24 of the master unit 2 selects the input image by the image selection unit 21 according to the designation, and the image processing is performed. Image processing such as enlargement of the designated position is performed by the unit 22 and the image is displayed on the PDP 23. The control unit 24 of the master unit 2 further uses the control bus C1 to
A control signal of each slave unit based on the control signal is transmitted. In each slave unit, the control unit receives the control signal, the video signal selection unit selects the video signal according to the control signal, and the designated video portion is enlarged in the video processing unit and displayed on the PDP. In this way, an arbitrary image designated from the outside can be displayed in an arbitrary size in an arbitrary location.

FIG. 3 is a schematic block diagram of another embodiment of the multi-panel display system according to the present invention. 1 is a system controller, 4 is a master unit, 5 is a slave unit, S
0 is an input video signal composed of a plurality of four video signals, S40 is one video signal selected from the input video signal S0 by the master unit 4, C40 is an output control signal of the controller 1, and C41 is a control of the slave unit. It's a bus.
FIG. 4 is a detailed block diagram of the master unit 4, where 41 is a video selection unit, 42 is a video processing unit, 43 is a PDP, 44 is a control unit, and S1, S2, S3, and S4 are each one of the input video signals S0. . FIG. 5 is a detailed block diagram of the slave unit, in which 52 is a video processing unit, 53 is a PDP, and 54 is a control unit.

When the video input desired to be displayed, the display position and the screen size are designated from the system controller 1, the control unit 44 of the master unit 4 selects the input video by the video selection unit 41 according to the designation, and the video processing is performed. The part 42 performs image processing such as enlarging the designated position and displays it on the PDP 43. The control unit 44 of the master unit 2 further outputs the signal S40 selected by the video selector 41 to the slave unit and transmits the control signal of each slave unit based on the control signal through the control bus C41. In each slave unit, the control section receives the control signal, and the specified section of the selected video signal is enlarged in the video processing section and displayed on the PDP. In this way, an arbitrary image designated from the outside can be displayed in an arbitrary size in an arbitrary location. In this system, it is possible to construct a multi-panel display system that displays the same video signal in all units by reducing the number of signal cables connecting the units.

FIG. 6 is a schematic block diagram of another embodiment of the multi-panel display system according to the present invention. 1 is a system controller, 60 is a master unit, 70 and 80 are sub-master units, 61, 62, 71, respectively. 72, 81 and 82 are slave units, S0 is an input video signal composed of a plurality of, for example, four video signals, S61 is a slave unit 6 selected by the master unit 60 from the input video signal S0.
1 is a video signal to be displayed, S62 is a video signal to be similarly displayed on the slave unit 62, C60 is an output control signal of the controller 1, and C61 is a control bus of the slave unit.
FIG. 7 is a detailed block diagram of the master unit 60. 601 is a video selection unit, 602 is a video processing unit, 603 is a PDP, 6
Reference numeral 04 is a control unit, and S1, S2, S3 and S4 are each one of the input video signals S0. Figure 8 shows the submaster unit 1
701 is a detailed block diagram of 701, and 701 is an image selection unit and 702.
Is a video processing unit, 703 is a PDP, 704 is a control unit, S
1, S2, S3, and S4 are each one of the input video signals S0. The sub master unit 80 also has the same structure. FIG. 9 is a detailed block diagram of one of the slave units 61.
Reference numeral 12 is a video processing unit, 613 is a PDP, and 614 is a control unit. In this embodiment, from the first group consisting of the master unit 60 and the slave units 61 and 62, the second group consisting of the sub-master unit 70 and the slave units 71 and 72, and the sub-master unit 80 and the slave units 81 and 82. The signal to be displayed on each slave unit is selectively supplied to each slave unit by the master or sub-master unit in the group.

When a video input desired to be displayed, a display position, and a screen size are designated from the system controller 1, the control unit 604 of the master unit 60 responds to the designation, and the video selection unit 6 is operated.
The input image is selected with 01, and the image processing unit 602 performs image processing such as enlargement of the designated position and displays it on the PDP 603.
As described above, the control unit 604 of the master unit 60 further outputs the video signal addressed to each slave unit to the video selector 6.
01, and outputs to the slave units 61 and 62 as signals S61 and S62, and transmits the control signals of each sub-master unit and each slave unit based on the control signal through the control bus C61. In each slave unit, the control section receives the control signal, and the specified section of the selected video signal is enlarged in the video processing section and displayed on the PDP. Each sub-master unit 7
In 0 and 80, video selection is performed similarly to the master unit, and the video is supplied to the slave units in each group.
In this way, an arbitrary image designated from the outside can be displayed in an arbitrary size in an arbitrary location. In this system, each unit can display an arbitrary input video signal, and the number of signal cables connecting the units can be greatly reduced.

Next, a method for recognizing the arrangement position of each unit will be described. The most common method is to attach a unit number preset switch such as a dip switch to each unit so that the setting contents can be read from the control bus through the control unit of each unit, and the position code of a predetermined unit is set to the dip switch. Set on the switch. The control unit of the master unit can display a predetermined display at a predetermined position by reading the position code.

As another method of recognizing the arrangement position of each unit, a non-overlapping symbol such as the serial number of each unit is stored as an ID in the control section of each unit in ROM and is determined in advance when the unit is installed. The order of the IDs, for example, the units are arranged in the ascending order of the ID code, and when the system is reset, the control unit of the master unit reads the IDs of the respective units through the control bus and creates the ID table, whereby the arrangement of the respective units can be specified and A predetermined display can be displayed at the position.

As another method for recognizing the arrangement position of each unit, a non-overlapping symbol such as the serial number of each unit is stored as an ID in the ROM of the control unit of each unit, and the arbitrary position is set when the unit is installed. By arranging the units in the unit, and issuing a unit arranging command from the system controller, the control unit of the master unit causes the PDP of each unit to be in the ascending order of ID codes, for example, 1, 2, 3, ..., 9 (9 is the total number of units. ) Etc. are displayed. By inputting the displayed numbers from the system controller in the order of the arrangement of the units, the control unit of the master unit can create a table of IDs in the arrangement of the units. Below, based on this table, a predetermined display can be performed at a predetermined position.

A large PDP generally has a function of changing the aspect ratio of an image and displaying it even by itself. A frame memory is used for aspect ratio conversion. By sharing this frame memory with the frame memory required for the video processing unit of the multi-panel display system,
The parts space can be reduced.

In the PDP, a so-called subfield method is generally used as a gradation display method, but a frame memory is used in this subfield method. By sharing this frame memory with the frame memory required in the video processing unit of the multi-panel display system, the number of parts and the parts space can be reduced.

[0018]

As described above, according to the present invention, a multi-panel display system for displaying a large screen image used as a display for mass display can be economically constructed as a thin and lightweight panel display that can be easily set. . That is, since the multi-panel display system is configured by the PDP unit having versatility and capable of displaying an image independently, a display having a screen of an arbitrary size can be easily set. Also, since it has a switching function of a plurality of input video signals, it is possible to display in any combination of videos. In order to specify the order of each unit, set the ID to each unit and arrange the units in the order of the predetermined ID at the time of system installation, or arrange by observing the test pattern displayed on each unit at the time of system initial setting. Is set and an arbitrary image is displayed at an arbitrary position by the data, so that the system can be easily set. The frame memory used in the video processing unit for multi-panel display can reduce the number of parts and the space for parts by using aspect ratio conversion or gradation display.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of one embodiment of a multi-panel display system according to the present invention.

FIG. 2 is a detailed block diagram of a master unit of one embodiment of a multi-panel display system according to the present invention.

FIG. 3 is a schematic block diagram of another embodiment of the multi-panel display system according to the present invention.

FIG. 4 is a detailed block diagram of a master unit of another embodiment of the multi-panel display system according to the present invention.

FIG. 5 is a detailed block diagram of a slave unit of another embodiment of the multi-panel display system according to the present invention.

FIG. 6 is a schematic block diagram of another embodiment of a multi-panel display system according to the present invention.

FIG. 7 is a detailed block diagram of a master unit of another embodiment of the multi-panel display system according to the present invention.

FIG. 8 is a detailed block diagram of a sub-master unit of another embodiment of the multi-panel display system according to the present invention.

FIG. 9 is a detailed block diagram of a slave unit of another embodiment of the multi-panel display system according to the present invention.

FIG. 10 is a schematic block diagram of a conventional multi-screen display device.

[Explanation of symbols]

 1 System Controller 2 Master Unit 3 Slave Unit 4 Master Unit 5 Slave Unit 21 Video Selector 22 Video Processor 23 PDP 24 Controller S0 Input Video Signal S1 to S4 Input Video Signal 100 Multi-screen Display Device 106 Display Unit 101 Video Signal Source 102 External control device 103 Enlargement processing circuit 104 Enlargement control circuit 105 Display unit 107 Number preset switch

Claims (7)

[Claims] 1. A plurality of plasma displays (PD
P) In a system in which units are connected vertically and horizontally to display a large screen, each unit includes one of the units as a master unit and a unit other than the master unit as a slave unit, and a system controller. The master unit has a video selection unit for inputting a plurality of video signals and selecting one of them, and a video processing unit for enlarging and displaying a part of the video signals, and the master unit is selected by a control signal from the system controller. The selected part of the video signal is displayed and the control signal is output to the slave unit.
The multi-panel display system, wherein the slave unit displays a designated portion of a video signal designated by a control signal from the master unit. 2. The master unit has a video selection unit for inputting a plurality of video signals and selecting one of the video signals, and a video processing unit for enlarging and displaying a part of the video signals, and controlling from a system controller. The specified part of the video signal specified by the signal is displayed, and the selected video signal and the control signal of the slave unit are output to the slave unit, and the slave unit magnifies and displays a part of the video signal. 2. The multi-panel display system according to claim 1, further comprising a video processing unit, which displays a designated portion of the video signal according to a control signal from the master unit. 3. A slave unit is grouped into an arbitrary number of groups, a master unit is placed in one of the groups, and one of slave units in a group without a master unit is set as a sub-master unit. Video that selects the video signal to be displayed by each unit in the glove selected by the master unit by inputting multiple video signals, the master unit by the control signal from the controller, and the sub-master unit by the control signal from the master unit It has a selection section and a video processing section for enlarging and displaying a part of the video signal, outputs the selected video signal individually to each slave unit in the group, and controls each in the master unit and the sub-master unit. The part of the video signal selected by the signal is displayed, and the slave unit 2. A video processing unit for enlarging and displaying a part of the video signal, wherein a part selected by a control signal from the master unit among the video signals from the master unit or the sub-master unit is displayed. The described multi-panel display system. 4. Each unit is provided with a frame memory for a video signal, and it is possible to display a video by changing the aspect ratio of the display screen even by itself. A video in which a part of the video signal is enlarged and displayed in the frame memory. 4. The multi-panel display system according to claim 1, wherein the multi-panel display system is used as a frame memory of a processing unit. 5. Each unit is provided with a frame memory for performing gradation display, and performs gradation display of a video signal,
4. The multi-panel display system according to claim 1, wherein the frame memory is used as a frame memory of a video processing unit for displaying a part of a video signal in an enlarged manner. 6. A storage unit for storing an ID in each unit, wherein the units are arranged in the order of a predetermined ID when the system is installed, and the I of each unit is set at the time of initial setting of the system.
The multi according to claim 1, claim 2, claim 3, claim 4, or claim 5, wherein D is read and an arbitrary image is displayed at an arbitrary position selected by the system selector based on the data. Panel display system. 7. A rewritable storage unit is provided in the system, a unit having an arbitrary ID is arranged at an arbitrary position when the system is installed, and a test pattern is displayed on each unit at the time of initial setting of the system. The input position of each unit is input to the system by the, and the relationship between the ID and the unit having the ID is stored in the storage unit according to the input data, and thereafter, the position is arbitrarily set in the arbitrary position selected by the system controller according to the stored content. 7. The multi-panel display system according to claim 6, which is configured to display the image of.