JPH05181815A - Control system - Google Patents

Abstract

PURPOSE:To reduce the burden of a computer for managing the whole in a system for projecting a computer graphics on the display of a large screen formed by arraying two-dimensionally plural CRT displays or projectors. CONSTITUTION:A computer 1 for managing the whole, a computer 8 for controlling a video source, and display computers 4A, 4B, 4C,... are connected by, for instance, RS232C. The computer 1 for managing the whole generates a code for realizing an event. This code is supplied simultaneously in parallel to the computer 8 for controlling the video source and the display computers 4A, 4B, 4C,.... The code has an inherent meaning in the computer 8 for controlling the video source and the display computers 4A, 4B, 4C,..., respectively. The computer 8 for controlling the video source and the display computers 4A, 4B, 4C,... have the conversion table of a work to the code, and execute the work in accordance with the conversion table.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device suitable for use in, for example, a multi-billboard system composed of a plurality of displays.

[0002]

2. Description of the Related Art For example, JP-A-62-163164,
JP-A-62-163479 to JP-A-62-16348
As shown in Japanese Patent Publication No. 1, a plurality of CRT displays or projectors are two-dimensionally arranged to form one large-screen display, and computer graphics, etc. are displayed on the large-screen display composed of the plurality of CRT displays or projectors. The development of a multi-billboard system that displays Such a multi-billboard system can be installed in a place where a large number of people gather, such as a meeting place or an airport waiting lobby, and can be used to provide information.

In such a multi-billboard system, a display computer is provided for each CRT display or projector. For example, in a multi-billboard system consisting of 30 CRT displays or projectors, as many as 30 display computers are prepared. In order to manage the plurality of display computers, a computer for overall management is placed in the conventional system. The computer for overall management is connected to a plurality of display computers. Each display computer operates under the control of the computer for overall management, and a desired screen displays computer graphics or the like on a large screen display including a CRT display or a projector.

[0004]

As described above, in the multi-billboard system, the computer for overall management must manage a very large number of display computers. For this reason, the burden on the computer for overall management is large, and a computer with high speed and large capacity is required as a computer for overall management, resulting in an increase in cost and a problem that sufficient operation speed cannot be obtained. .

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a control system capable of reducing the load on a computer for overall management, reducing costs, and performing high-speed processing.

[0006]

According to the present invention, in a control system in which a plurality of control devices are connected in parallel to a central processing unit, and the central processing unit manages the operations of the plurality of control devices, the central processing unit is controlled. An identification number for the device is generated, and each of the plurality of control devices is provided with a unique control table indicating control information corresponding to the identification number.
Each control device performs work according to this control information, and the central processing unit simultaneously supplies the identification numbers to each control device in parallel,
When the identification signal is given to each control device, each control device refers to the table to obtain control information for the identification number, and in accordance with this control information, each control device performs a unique work in the control system. is there.

[0007]

In order to manage the display computers 4A, 4B, 4C, ... And the video source control computer 8 from the overall management computer 1, the display computers 4A, 4B, 4C ,. , And the code is sent to the computer 8 for controlling the video source all at once.
This code is used for each display computer 4A, 4B, 4
.. and the computer 8 for controlling the video source have their own meanings. Each of the display computers 4A, 4B, 4C, ... And the video source control computer 8 is provided with a table for interpreting a command corresponding to this code. The display computer 4A, 4B, 4C, ... And the video source control computer 8 refer to this table to interpret the command corresponding to the code and execute the task corresponding to the command.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an example of a multi-billboard system to which the present invention is applied.

In FIG. 1, reference numeral 1 is a computer for overall management. The computer 1 for overall management manages the entire system. Normally, a computer for total management must manage a plurality of computers, so a computer with a large capacity and high speed processing is required. However, in one embodiment of the present invention, as will be described later in detail, The burden on the management computer 1 is reduced. Therefore, as the computer 1 for overall management, it is possible to use a computer having the capability of a personal computer (for example, MS-DOS machine).

Reference numeral 2 is a server computer. As the server computer 2, a computer having an excellent communication function (for example, UNIX machine) is used. The server computer 2 stores application program files and data files for display computers 4A, 4B, 4C, ... The file of the application program is stored in an executable format, and the server computer 2 is provided with a compiler so that the source code file can be compiled to create an executable file.

The server computer 2 is an ISDN.
Via a high-speed line such as, for example, the computer 3 and L in the management office away from the venue where this system is located.
It is connected by AN (Local Area Network). When a bug occurs in the application program or the version of the application program is upgraded, conventionally, it is necessary to go to the place where the multi-billboard system is placed. Then, it is necessary to debug or upgrade the application program for each of the display computers 4A, 4B, 4C, .... On the other hand, in the multi-billboard system to which the present invention is applied, the server computer 2 is connected to the management office computer 3 via the LAN, so that application programs can be easily debugged and upgraded. I can do it. That is, when debugging or upgrading the application program, the administrator computer 3 logs in to the server computer 2. Then, the necessary application program is extracted, debugged or upgraded, and returned to the server computer 2. These operations can be performed unattended on the multi-billboard system side. By providing a compiler in the server computer 2, debugging with source code can be performed.

Reference numerals 4A, 4B, 4C, ... Are display computers. Computers 4A, 4 for displaying these
Personal computers are used as B, 4C, .... The computers 4A, 4B, 4C, ... Are provided respectively for the projectors 5A, 5B, 5C ,. The projectors 5A, 5B, 5C, ...
It is an inch projector. For example, 30 40-inch projectors 5A, 5B, 5C, ... Are two-dimensionally arranged to form a 200-inch large screen.

Reference numeral 6 is a video source group. The video source group 6 includes a video tape recorder 7A, a HD video tape recorder 7B, and the like. Video source group 6
Are provided to display the video screen. A computer 8 is provided for controlling these video source groups 6. The video source control computer 8 is, for example, a personal computer.

The output of the video source group 6 is the switcher 9
Through the display computers 4A, 4B, 4C, ...
Is supplied to. Computers 4A, 4B, 4 for display
C, ... Superimposes the video screen through the switcher 9 on the computer graphics as required.

A server computer 2, a computer 1 for overall management, and a computer 4 for display.
A, 4B, 4C, ... are CSs such as Ethernet.
It is connected by LAN such as MA (Carrier Sense Multi Access) system. The application program files stored in the server computer 2 can be given to the display computers 4A, 4B, 4C, ... Via this LAN.

Further, the computer 1 for overall management, the video source control computer 8 and the computers 4A, 4B, 4C, ... For display are connected in parallel using RS232C or the like.

The file of the application program is stored in the server computer 2 as described above. Computer 2 for server, if necessary
The application program files are sent all at once from the display computers 4A, 4B, 4C, .... The files of this application program are set in the display computers 4A, 4B, 4C, ....

In order to manage the display computers 4A, 4B, 4C, ... And the video source control computer 8 from the computer 1 for overall management, the display computers 4A, 4B, 4C ,. , And the code is sent to the computer 8 for controlling the video source all at once. This code is used for each display computer 4A, 4
.. and the computer 8 for controlling the video source have their own meanings. Each of the display computers 4A, 4B, 4C, ... And the video source control computer 8 is provided with a table for interpreting a command corresponding to this code.
The display computer 4A, 4B, 4C, ... And the video source control computer 8 refer to this table to interpret the command corresponding to the code and execute the task corresponding to the command.

As shown in FIG. 2, the management computer 1 includes, for example, an event (1), an event (2), and an event (2).
(3), codes corresponding to "...", "002",
"003", ... Is generated. Computer 4 for display
As shown in FIGS. 3 to 6, commands corresponding to each event are prepared in the computer 8 for controlling A, 4B, 4C, ... And the video source.

For example, in order to realize the event (2),
As shown in FIG. 2, when the code "002" is generated from the management computer 1, the code "002" is sent to the display computers 4A, 4B, 4C, ... And the video source control computer 8 all at once. Sent. Based on this code "002", the computer 4A for display performs "display of computer graphic A" as shown in FIG. 3, and the computer 4B for display as shown in FIG.
"Displays computer graphic B", the display computer 4C displays "computer graphic C" as shown in FIG. 5, and the video source control computer 8 displays "computer graphic C" as shown in FIG. do nothing". Then, computer graphics are displayed on a screen composed of the projectors 5A, 5B, 5C, ....

Further, for example, in order to realize the event (4), when the code “004” is generated from the management computer 1, the code “004” is displayed on the display computers 4A, 4B, 4C ,. It is sent to the computer 8 for controlling video sources all at once. This code "004"
Based on the above, as shown in FIG.
A is "do nothing", the display computer 4B is "do nothing" as shown in FIG. 4, the display computer 4C is "do nothing" as shown in FIG. 5, and also shown in FIG. So that the computer 8 for controlling the video source
Play R7A ”. Then, the playback screen of the VTR shows the computer graphics as the projectors 5A, 5B,
It is displayed on a screen composed of 5C, ....

Thus, the computer 1 for overall management
, And the display computers 4A, 4B, 4C, ... And the video source control computer 8 are connected in parallel, and the computer 1 for overall management is connected to the display computers 4A, 4B. , 4C, ..., And by sending the code to the computer 8 for controlling the video source at the same time, the computers 4A, 4B, 4C for displaying,
, And the operation of the computer 8 for controlling the video source can be managed at one time. Computer 4A for individual display,
, And the operation of the computer 8 for controlling the video source need not be managed, so that the load on the computer 1 for overall management is light, and the display computers 4A, 4B, 4C ,. The video source control computers 8 can be operated all at once, and the processing speed is high. Therefore, a personal computer can be used as the computer 1 for overall management.

[0023]

According to the present invention, the computer 1 for overall management and the computers 4A, 4B, 4 for display are displayed.
, And the computer 8 for controlling the video source are connected in parallel, and the computer 1 for overall management is connected.
Are the computers 4A, 4B, 4C for display,
, And by sending the code to the computer 8 for controlling the video source at the same time, the computers 4A, 4 for displaying 4
The operation of the computer 8 for controlling B, 4C, ... And the video source can be managed at one time. Since it is not necessary to manage the operations of the individual display computers 4A, 4B, 4C, ... And the video source control computer 8, the burden on the overall management computer 1 is light, and the display computer 4A , 4B, 4C, ..., And the computer 7 for controlling the video sources can be operated simultaneously, and the processing speed is high.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a schematic diagram used for explaining code generation in one embodiment of the present invention.

FIG. 3 is a schematic diagram used to explain a table in an embodiment of the present invention.

FIG. 4 is a schematic diagram used for explaining a table in one embodiment of the present invention.

FIG. 5 is a schematic diagram used to explain a table in one embodiment of the present invention.

FIG. 6 is a schematic diagram used to explain a table in one embodiment of the present invention.

[Explanation of symbols]

 1 computer for overall management 2 server computer 4A-4E display computer 8 computer for video source management

Claims (1)

[Claims] 1. A control system in which a plurality of control devices are connected in parallel to a central processing unit, and the central processing unit manages the operations of the plurality of control devices, wherein the central processing unit identifies the control device. A number is generated, and each of the plurality of control devices is provided with a unique control table indicating control information corresponding to the identification number,
Each of the control devices performs work according to this control information, and the central processing unit simultaneously supplies the control devices with an identification number in parallel at the same time, and when the identification signal is given to each control device, each control device A control system in which the device refers to the above table to obtain control information for the identification number, and each control device performs a unique work according to the control information.