JP2911189B2 - Multi-screen display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention displays a predetermined still image or moving image on a large number of displays, and particularly, displays with high quality and a large screen with regularly arranged displays. The present invention relates to a multi-screen display device that can perform the operations.

(B) Conventional technology Conventionally, a projection type projection device has been used to obtain a large-screen image. However, this has the disadvantage that the device is large, the cost is increased, and the screen is dark.

As a method of displaying an image on a large number of displays, there is a method disclosed in Japanese Patent Publication No. 50-32009. According to this method, by using an enlargement device, one image source can be enlarged and a large screen can be projected on a plurality of displays.

Here, the enlargement device has, for example, a number of frame memories corresponding to the number of displays, and obtains an image having an arbitrary enlargement ratio by controlling reading of data written in the frame memory.

FIG. 2 shows a block diagram of a system configuration of a conventional multi-screen display device.

In the figure, (1) is a video signal generator composed of a VTR or a video disk, etc., (2) is a system controller composed of a personal computer or the like, which controls the video signal generator and a video enlarging device described later, and (3) is an optional A frame memory (3a) corresponding to the number of displays, a selector (3b) for washing video signals from a plurality of video signal generators, and the system controller (2) Video enlargement device comprising a program memory (3c) for storing an automatic operation program sent from the computer and enlargement control means (3d) controlled in accordance with the program and obtaining an arbitrary enlargement ratio by controlling reading of the frame memory , (4) are images for selecting an enlarged image signal from the image enlargement device (3) or an equal-size image signal from the image signal generator (1). Switching means (5) is the 16
Display group consisting of CRT monitors.

 Next, the operation of the above device will be described.

First, an automatic driving program is downloaded in advance from the system controller (2) to the enlargement control means (3d),
The enlargement control means (3d) stores this program in the program memory (3c). Then, the enlargement device is started and automatically operated by an execution command from the system controller (2).

When the above program is executed, the enlargement control means (3d)
Controls the writing and reading of the frame memory (3a), enlarges the video signal from the video signal generator (1) at a predetermined magnification, and displays the display group (5) via the video switching means (4). Supply to

In this conventional apparatus, an operation such as switching of an enlargement ratio and an input video signal and an instruction to start an automatic operation program have to be given as commands from the system controller (2). For example, in the case where this multi-screen display device is installed in a permanent exhibition hall, even if only the fixed display with an enlargement ratio of 4 × 4 and only the input video signal is to be changed, the system controller (2) is also provided together with the enlargement device. Had to be installed.

In addition, there is a disadvantage that even a simple single operation requires a complicated command instruction operation in the system controller (2).

(C) Problems to be Solved by the Invention The present invention is to solve the above-mentioned problems, and to easily set an enlarged display state of a multi-screen display device.

(D) Means for Solving the Problems According to the present invention, there is provided an enlargement apparatus including a plurality of video memories to which the same input video signal is respectively written, and enlargement control means for controlling writing and reading of the video memory. A display group consisting of a plurality of displays connected to an enlargement device and displaying an enlarged image, and an automatic operation program of the enlargement device connected to the enlargement control means and downloaded to the enlargement control means, and an execution command A multi-screen provided with a system controller for activating an enlargement device, and input means connected to the enlargement control means for setting at least an enlargement ratio of an image and selection of a video signal to be enlarged and displayed among a plurality of input video signals; A display device.

(E) Function The present invention uses an input means for setting an enlarged display state, and sets an enlargement ratio, sets an image signal to be enlarged and displayed among a plurality of input image signals, activates an enlargement device, and the like. Easy to use without using.

(F) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of a system configuration in the embodiment.
The same parts as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted.

This embodiment is characterized in that an input unit (6) for setting an enlarged display state is provided, which is connected to the enlargement control unit (3d).

FIG. 4 shows an embodiment of the input means (6). In this embodiment, of the eight types (A to H) of the input video signals, which video signal is to be enlarged and displayed, and the enlargement ratio (1 to 8 times), and as a function, the color of the entire CRT is the same. ", The displayed moving image is frozen, and" still "can be selected and designated. In addition, start and stop of the system can be specified.

When the designation is made in this way and execution is instructed, the enlargement control means (3d) controls the writing and reading of the frame memory (3a), and converts the video signal from the selected video signal generator (1) to a predetermined video signal. Video switching means (4) with magnification at magnification
Is supplied to the display group (5) via the display device to display an enlarged image.

FIG. 3 shows another embodiment of the present invention, which is different from the embodiment of FIG. 1 in that a system controller (2) and a program memory (3c) are provided. As a result, an execution program for automatic operation is downloaded from the system controller (2) to the enlargement device as in the past, that is, stored in the program memory (3c) via the enlargement control means (3d), and the display is executed according to the program. It is also possible.

(G) Effects of the Invention As described above, according to the present invention, automatic operation is possible, and when a simple operation is instructed, the input means can be directly operated without using the system controller. , The effect is great.

[Brief description of the drawings]

FIG. 1 is a drawing showing one embodiment of the present invention, FIG. 2 is a drawing showing a conventional example, FIG. 3 is a drawing showing another embodiment of the present invention,
FIG. 4 is a drawing showing an embodiment of the input means. (1) ... video signal generator, (3) ... magnifying device (3d) ... magnifying control means, (5) ... display group (6) ... input means

Continued on the front page (72) Inventor Hiroyuki Ueyama 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Motoaki Asao 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric (56) References JP-A 1-21485 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G09G 5/00

Claims (1)

(57) [Claims] 1. An enlargement device comprising a plurality of video memories to which the same input video signal is respectively written, and enlargement control means for controlling writing and reading of the image memory. A display group consisting of a plurality of display devices, and a system controller connected to the enlargement control means, which downloads an automatic operation program of the enlargement apparatus to the enlargement control means, and activates the enlargement apparatus by an execution command; A multi-screen display device provided with an input unit connected to the enlargement control unit and configured to set at least an enlargement ratio of an image and selection of a video signal to be enlarged and displayed among a plurality of input video signals.