JPH04276795A - Multi-video system - Google Patents

Abstract

PURPOSE:To construct a multi-video system using the video signals of plural video sources in spite of the same or different type of video signal system and capable of performing multiwindow display. CONSTITUTION:This system is comprised by providing a multi-monitoring device part 3 comprised by arranging plural video display processing means provided with image processing parts 3b1... which perform prescribed processing on a supplied video signal and display screen parts 3a1... and capable of performing video display in accordance with the video signals of plural kinds of scan frequencies so as to neighbor the display screen parts 3b1... with each other, selective supply means 2a... which supply by selecting supplied one or plural video signals to each video display processing means, and a control means 5 which controls a selective supply operation and an image processing operation.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-video system in which a plurality of monitor devices are assembled and a special image effect can be obtained by a composite image displayed by the monitor devices.

0002

[Prior Art] Multi-video systems composed of multiple screens include systems using slide films, video projectors, and systems in which multiple television monitors are stacked in a cubic arrangement. This multi-video system can effectively produce and display an enlarged pattern of video directly on each screen consisting of a rear-projection projector screen or a monitor device such as a cathode ray tube. It has the advantage that it can give a strong impression on people, and that it can provide sufficient image quality and brightness.

0003

[Problems to be Solved by the Invention] By the way, in such a multi-video system having a plurality of monitor units,
Usually, only one video signal based on a specific signal system can be used as an input video signal.

There are various signal systems with different horizontal and vertical scanning frequencies, number of scanning lines, etc., such as the NTSC system, high-definition system, and video signals based on computer graphics. It is necessary to construct a dedicated system corresponding to the video format, and it is not possible to select any video source (any signal format) as the video signal input to a multi-video system, and it is not possible to select any video source (any signal format) as the video signal input to a certain multi-video system, and Processing such as compositing and displaying images in a so-called window display was not possible. Therefore, as images to be output on a large screen, the image sources and image formats that can be expressed are limited, such as an enlarged image using one image signal according to a specific method or multiple identical images, and it is not always possible to use the desired image source. Moreover, the visual effects were not satisfactory.

[0005]

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems. A plurality of video display processing means capable of displaying video in response to video signals of different scanning frequencies have a multi-monitor device section configured such that their display screen sections are arranged adjacent to each other, It also controls a selective supply means for selectively supplying one or more supplied video signals to each video display processing means, a selective supply operation in this selective supply means, and an image processing operation in each video display processing means. This constitutes a multi-video system having a control means for controlling the image.

[0006]

[Operation] By distributing multiple input video signals and performing image processing, a desired video can be displayed on a desired screen among multiple screens, and the display mode on each screen can be specified. The present invention is not limited to video signals of the above format or specific processing.

[0007]

[Embodiment] Fig. 1 shows the system configuration of an embodiment of the multi-video system of the present invention, and 1 indicates five video signal input terminals 1a to 1e so as to correspond to the input of, for example, five units of video signals. The provided input sections 2a to 2e are distributors provided in the same number as the input terminals 1a to 1e in the input section 1. Note that the number of input terminals of the input section 1 is not limited to five units, and the number of distributors is also changed according to the number of input terminals.

On the other hand, numeral 3 indicated by a dashed line is a multi-monitor device section, which is composed of 16 units of video display processing means. One unit of video display processing means consists of a display screen section and an image processing section, that is, display screen sections 3a1 to 3a1.
3a16 and the image processing sections 3b1 to 3b16 corresponding to the display screen sections 3a1 to 3a16, respectively, constitute 16 units of video display processing means. As shown in the figure, the display screen sections 3a1 to 3a16 are arranged in rows of four in the vertical and horizontal directions, thereby forming a large output screen as the multi-monitor device section 3.

In this embodiment, the display screen sections (3a1 to 3a1)
3a16) and image processing units (3b1 to 3b16) each has a horizontal frequency of 15
KHz ~ 128KHz, vertical frequency 25Hz ~ 12
The device is configured as a so-called multi-scan device that can display images corresponding to video signals of each scanning frequency as long as the video signals are within the range of 0 Hz. That is, the display screen sections 3a1 to 3a
Reference numeral 16 is a monitor device in which each drive circuit section is compatible with multi-scanning. However, even if the display screen units 3a1 to 3a16 are normal monitor devices, multi-scanning can be made possible by the image processing units 3b1 to 3b16 converting various signal systems to specific signal systems. A configuration may also be adopted. For example, display screen sections 3a1 to 3a16
When the monitor is configured with a monitor device that can only support NTSC signals, multi-scanning is achieved by converting video signals of various signal formats into NTSC signals in the image processing units 3b1 to 3b16 and outputting the converted signals. .

Note that the display screen sections 3a1 to 3a16 can be realized by various monitor devices such as a CRT monitor device, a projection type monitor device (projector), and a liquid crystal monitor device. Further, the display screen section and the image processing section in each video display processing means are configured integrally or separately. For example, the display screen section 3a1 and the image processing section 3b1 may be integrated into an integrated device, or may be connected as separate devices to form one video display processing means.

The image processing units 3b1 to 3b16 are capable of cutting out a specific portion of the supplied video signal or enlarging it at an arbitrary magnification, and the display screen unit 3
Video signals obtained through these processes are supplied to a1 to 3a16. Furthermore, an original image signal that is not subjected to image processing may be supplied simultaneously with the video signal that has been subjected to such image processing.

Further, 4A to 4P are 16 switches that selectively supply video signals inputted from the distributors 2a to 2e to the image processing units 3a1 to 3a16, respectively. 4P has distributors 2a to 2 respectively.
The output signal from e is input, and it is constituted by a switching circuit that switches between these five input signals and outputs the output selectively.

That is, the above-mentioned distributors 2a to 2e and the switchers 4A to 4P are connected to the image processing units 3b1 to 3b16.
For this purpose, the number of distributors is the same as the number of input terminals of the input section 1, and the number of the distributors is the same as the number of input terminals of the input section 1, and the number of the distributors is the same as the number of input terminals of the input section 1. The same number of devices as the image processing units 3b are provided. Note that the distributors 2a to 2e and the switch 4 as selective supply means
A to 4P can also be configured by using a matrix switching device in which the input section is the number of input terminals and the output section is the number of image processing copies. However, distributors 2a to 2e and switch 4A
~4P, or the matrix switch that replaces it, needs to have a sufficient frequency band to accommodate various input video signals.

Reference numeral 5 denotes a system controller constituted by computer means consisting of a CPU, ROM, RAM, and an interface unit, which controls distribution operations by the distributors 2a to 2e and switchers 4A to 4P, and image processing units 3b1 to 3b.
Image processing operation in 3b16, display screen section 3a1 ~
Operation control of the entire multi-video system, such as display operation (scan type control operation, etc.) at 3a16, is performed based on operation command input from the operator. A keyboard 6 and a mouse 7 are provided as operation input means for the operator, and a CRT monitor screen 8, for example, is provided as display means for system operation control. In addition, display screen sections 3a1 to 3a1 are used as display means for system operation control.
6 can also be used for video display.

The video display operations that are possible in such a multi-video system will be described below. Now, an NTSC video signal (horizontal scanning frequency 15.7 KHz, vertical scanning frequency 59.94 Hz) as shown in FIG.
b) A video signal from a workstation (for example, horizontal scanning frequency 63.8 KHz, vertical scanning frequency 6
0.43Hz computer graphic video signal), high-definition video signal (horizontal scanning frequency 33.75KH) as shown in Figure 2(c) from the input terminal 1c.
z, vertical scanning frequency of 60 Hz) is supplied.

Each of these video signals is supplied to distributors 2a to 2c, and all of them are supplied to input terminals of switchers 4A to 4P, respectively. Therefore, the system controller 5 controls each switch 4 based on the operation from the operator.
By performing switching control of A to 4P, a predetermined video signal is selected and output from each switch 4A to 4P to each image processing section 3b1 to 3b16. Each of the image processing units 3b1 to 3b16 also performs predetermined image processing such as cropping and enlarging based on the control of the system controller 5, or supplies the original video signal as it is to the display screen units 3a1 to 3a16, respectively. It will be output as

With this operation, the 16 display screen sections 3a1 to 3a16 can simultaneously display images such as those shown in FIGS. 3 and 4, that is, video signals of various systems, as a multi-window, and each of the display screen sections 3a1 to 3a16. 3a
In step 16, it becomes possible to display a video image that has been subjected to predetermined cutting and enlarging processing.

For example, in the case of FIG. 3, the image processing units 3b1 and 3b are
5, 3b11, 3b12, 3b15, and 3b16 are supplied with the NTSC video signal from the input terminal 1a, and the image processing units 3b9, 3b10, 3b13, and 3b14 are supplied with the computer graphics video signal from the input terminal 1b. , and further image processing units 3b2 and 3b3
, 3b4, 3b6, 3b7, and 3b8 are supplied with a high-definition video signal from the input terminal 1c, and each of the image processing units 3b1 to 3b16 cuts out a predetermined area from the supplied video signal for one screen. By enlarging the image and outputting it to the display screen sections 3a1 to 3a16, an image in which images of a plurality of signal systems as shown in the figure are pasted together on one screen can be displayed on the display screen sections 3a1 to 3a16. become.

Similarly, in the case of FIG. 4, the image processing section 3b
5, 3b12, 3b13, 3b14, 3b15, 3b
The NTSC video signal from the input terminal 1a is supplied to the image processing units 3b1, 3b2, 3b6, 3
A computer graphics video signal is supplied from the input terminal 1b to b9, 3b10, and 3b11, and image processing units 3b3, 3b4, 3b7, and 3b8
A high-definition video signal is supplied from the input terminal 1c to the input terminal 1c, and each of the image processing units 3b1 to 3b4 and 3b6 to 3b16 other than the image processing unit 3b5 processes a predetermined area of the supplied video signal for one screen. Cut out and enlarge display screen parts 3a1 to 3a4 and 3a
6 to 3a16, and the image processing section 3b5 directly outputs the supplied video signal to the display screen section 3a5 without performing processing such as enlargement, so that multiple signal formats as shown are possible. An image in which images of different sizes are pasted together within one screen is displayed on the display screen sections 3a1 to 3a16.

That is, in this embodiment, a multi-video system having a multi-scan function capable of displaying video signals of various formats is realized, and a plurality of various video sources are divided into windows and displayed on the multi-monitor unit 3. This makes it possible to realize a multi-video system with multi-window functions.

[0021] Therefore, when operating the system, various types of video sources can be used as they are for the multi-video system, and various video displays can be realized by arbitrary image processing, so it is possible to obtain various video effects. can. In particular, by combining high-definition video signals and computer graphics video signals, it is possible to obtain video that has a stronger impact on the viewer.

Note that, for example, a data RAM for control patterns is provided in the system controller 5 to control the image aspect on the screen, that is, to select the image signals to be supplied to the image processing units 3b1 to 3b16, and to select the image signals to be supplied to the image processing units 3b1 to 3b16. 3b1
By storing the control data of the image processing contents in each of 6 in patterns, it is possible to simplify the operator's operation for switching the image mode, and also to enable rapid switching of the image display pattern. Further, in this embodiment, since a mouse is provided as an operation means for the operator, it is possible to easily perform switching operations for these image modes.

By the way, of course, this embodiment can obtain any combination of video formats, not just the examples shown in FIGS. 3 and 4, depending on the number of input video signals and the content of image processing. It is also possible to output an enlarged video using only NTSC video signals or a multi-window video using multiple NTSC video signals. Further, for example, a frame memory means is provided, and the video signal stored in the frame memory means is supplied to the selective supply means such as the above-mentioned distributor and switch, and can be used alone as one video source or as an input section. It can be used in combination with the input video signal from 1, or it can be used in the same way by providing a character generator in the system. It goes without saying that the number of display screen units configured as the multi-monitor unit 3 is not limited to 16.

[0024]

As explained above, the multi-video system of the present invention is capable of supplying a desired video signal to each image processing section provided corresponding to each display screen section,
Furthermore, since the multi-monitor unit is configured to have a multi-scan function, it is possible to perform multi-window display using video signals from multiple video sources, regardless of whether the video signal formats are the same or not. This has the advantage that it is possible to obtain video output with high visual effects.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an example of an input video signal.

[Figure 3] Multi-scan/
FIG. 3 is an explanatory diagram of an example of multi-window display.

[Figure 4] Multi-scan/
FIG. 7 is an explanatory diagram of another example of multi-window display.

[Explanation of symbols]

1 Input section 2a-2e Distributor 3 Multi-monitor device section 3a1 to 3a16 Display screen section 3b1 to 3b16 Image processing section 4A~4P switch 5 System controller

Claims (1)

[Claims] Claim 1: A plurality of units comprising an image processing unit and a display screen unit capable of performing predetermined processing on a supplied video signal, and capable of displaying video in response to video signals of multiple types of scanning frequencies. The video display processing means generates one video for each of the video display processing means from one or more video signals supplied to the multi-monitor unit in which the display screen units are arranged adjacent to each other. A multi-image display comprising a selection supply means for selecting and supplying a signal, and a control means for controlling a selection operation in the selection supply means and an image processing operation in each of the image display processing means. system.