JPH05303360A - Multi screen display device - Google Patents

Abstract

PURPOSE:To obtain a multi screen display device in which a system controller is simplified in a large scale multi screen display device which is constituted with plural multi screen display devices. CONSTITUTION:Command from a system controller 6 is simultaneously inputted to video magnifying devices 7, 7... of each multi screen display device connected in cascade. A discriminating means 7d is incorporated in each video magnifying devices 7, 7..., start signal of the prescribed processing and pattern information are outputted and the video magnifying device is controlled. Therefore, the same processing as in a single multi screen display device can be performed in a large scale multi screen display device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen display device provided with a video signal enlarging device, a so-called multi-vision system, and particularly to a large-scale multi-screen display device in which a plurality of multi-screen display devices are combined. Regarding

[0002]

2. Description of the Related Art As a conventional multi-screen display device, Japanese Unexamined Patent Publication No.
No. 120585 (G09G 5/00). FIG. 5 shows a block diagram of this multi-screen display device. Reference numeral 1 is a video signal generator such as a VTR or a video disk, 2 is a personal computer, etc., and the system controller for controlling the video signal generator 1 and a video enlarging device described later, 3 is for producing an enlarged video signal at an arbitrary enlargement ratio. A frame memory 3a corresponding to the number of display devices, a program memory 3b for storing an automatic operation program sent from the system controller 2, and the frame memory controlled according to the program.
An enlargement control means 3c is provided to obtain an arbitrary enlargement ratio by controlling the reading of 3a. Reference numeral 4 is a video switching means for selecting the magnified video signal from the video magnifying device 3 or the equal-magnification video signal from the video signal generator 1, and 5 is a plurality of CRTs.
It is a display group consisting of monitors.

[0003]

Each such multi-screen display device is provided with an image enlarging device and a system controller. Therefore, for example, as shown in FIG.
When a larger-scale multi-screen display device is configured by using a plurality of multi-screen display devices, the system controller becomes plural and the operability deteriorates.

On the other hand, when operating each multi-screen display device using a common system controller, all the multi-screen display devices behave in exactly the same way, and the entire enlargement and wipe processing are realized. You will not be able to do it. That is, for example, in one of the multi-screen display devices that make up a large-scale multi-screen display device, when performing color wipe processing from left to right as shown in FIG. As shown in (b), each multi-screen display device starts the wipe process at the same time,
As a whole of a large-scale multi-screen display device, the wipe process from left to right cannot be realized.

[0005]

According to the present invention, there is provided a large-scale display apparatus which is constructed by combining a plurality of multi-screen display devices for controlling the display of a display unit group consisting of a plurality of display units by an image enlarging device controlled by a system controller. A large-scale multi-screen display device, wherein the video enlarging device controls a video memory in which an input video signal is written, a magnifying control means for controlling writing and reading of the video memory, and the magnifying control means. A program memory for storing a program and identification means for identifying the position of the large-scale multi-screen display device and for instructing the enlargement control means of start of predetermined processing and pattern information. And a multi-screen display device characterized in that each of the image enlarging devices is connected to the system controller in a cascade. It is.

[0006]

Since the present invention is configured as described above, even if a large-scale multi-screen display device is constructed using a plurality of multi-screen display devices, the wiring from the system controller can be reduced to one.
It can be a book. Further, the expansion patterns such as enlargement and wipe that can be executed can be performed by the same command as in the case of the conventional single multi-screen display device.

[0007]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of essential parts of an image enlarging device of each multi-screen display device which constitutes the large-scale multi-screen display device of the present invention. Each of the image enlarging devices 7, 7 ...
It is provided with command input / output terminals 8a and 8b and is connected to enlargement control means 7c in the image enlargement device 7. In addition, 9a, 9b
Is a buffer. Further, each image enlarging device 7 is provided with an identifying means 7d for identifying the position of the monitor as a whole. These image enlarging devices are connected to the system controller 6 in a cascade as shown in FIG.

Here, for example, as shown in FIG. 3, 3 × 4 C
Consider a case where a multi-screen display device configured by RT is arranged in a 3 × 3 array to form a large-scale multi-vision. In this case, the setting switch 7e provided in the identifying means 7d is composed of three (a, b, c), and the meaning of each switch is

[0009]

[Equation 1]

Which is the value described in each multi-screen display device of FIG.

Next, the operation will be described based on the flowchart of FIG. Similarly to the above, in the case of performing the color wipe process, first, when the color wipe key of the system controller 6 is pressed, all the enlarged image devices 7, 7 ... Are connected in cascade, so that all the enlarged image devices 7, 7 ... A wipe command is input to. Next, each image enlargement device 7,7
... determines whether or not it is time to start the process by setting 7d of the identification means, and the wipe process is started in each multi-screen display device after the elapse of time. That is, when the wipe process is performed from left to right, first, (3,1,1) to (3,1,
Wiping of the multi-screen display device of 3) is performed, and after the time when these wiping ends, (3, 2, 1) to (3, 2,
The wipe of 3) is started. Similarly, after the wipe end time has elapsed, the wipes of (3, 3, 1) to (3, 3, 3) are started, and after these wipes are completed, the entire wipe process is completed.

In the above embodiment, the color wipe process from left to right has been described as an example. However, if the wipe start time and the wipe development pattern are stored in the identifying means in various ways, it can be realized with a plurality of patterns. is there. For example, a color wipe process that goes from the center to the outside is also possible. Also, when adding a multi-screen display device, it is only necessary to change the identification switch.

[0013]

According to the present invention, even when a large-scale multi-screen display device is constructed by using a plurality of multi-screen display devices,
The wiring from the system controller can be one. Further, since the expansion patterns that can be implemented, such as expansion and wipe, can perform the same processing as in the case of the conventional single multi-screen display device with the same command, a new command is added and the system controller accompanying it is added. Does not have to be complicated.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of an image enlarging device of a multi-screen display device.

FIG. 2 is a connection diagram of a system controller and an image enlarging device.

FIG. 3 is a configuration diagram of a large-scale multi-screen display device.

FIG. 4 is a flowchart of a color wipe process.

FIG. 5 is a block diagram of a single multi-screen display device.

FIG. 6 is a schematic diagram of a color wipe process.

[Explanation of symbols]

 1 video signal generator 2, 6 system controller 3, 7 video enlarging device 4 video switching means 5 display group 3a, 7a frame memory 3b, 7b program memory 3c, 7c enlarging control means 7d identification means 7e setting switch 8a, 8b I / O terminals 9a, 9b buffer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsunobu Enomoto 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Kiyoji Matsumoto 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Denki Within the corporation

Claims (1)

[Claims] 1. A large-scale multi-screen display device configured by combining a plurality of multi-screen display devices for controlling the display of a display unit group including a plurality of display devices by an image enlarging device controlled by a system controller. In the image enlarging device, an image memory in which an input image signal is written, an enlarging control unit for controlling writing and reading of the image memory, and a program memory for storing a program for controlling the enlarging control unit. And a discriminating unit for discriminating which position of the large-scale multi-screen display device is arranged, and for instructing the enlargement control unit to start predetermined processing and pattern information. A multi-screen display device, wherein the device is cascade-connected to the system controller.