JPH07261721A - Multiple video system - Google Patents

Abstract

PURPOSE:To provide a multiple video system capable of reducing the size of the whole of a device and reducing cost and displaying information such as characters and also displaying the information and a video signal while synthesizing the information to the video signal. CONSTITUTION:This system is constituted of a master personal computer 1 inputting video signals and character information, etc., and outputting digital video signals while performing signal processions, a video signal distributing device 2 plurally distributing digital video signals, plural personal computers 3 storing distributed digital signals and performing signal processions such as a partial magnifying and plural monitors 4 displaying video output signals from plural personal computers 3 and in which display parts are arranged so as to be adjacent. In the system, the inputted video signals and information inputted from input means such as the keyboard of the master personal computer 1 or information stored in storage devices are processed to be displayed on plural monitors by changing display positions while controlling plural personal computers with the master personal computer 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video system for displaying video signals and the like on a plurality of screens, and more particularly to a multi-video system for displaying a plurality of personal computers.

[0002]

2. Description of the Related Art As a video system for displaying a video signal or the like on a plurality of screens, a slide film system, a video project system, or a plurality of television monitors are stacked and arranged on a cubic system. A multi-video system in which an image is changed by computer control has been put into practical use. As shown in FIG. 6, a conventional multi-video system using a plurality of television monitors includes a video signal input means 61 for inputting a video signal and an A / D conversion means 62 for converting the video signal into a digital signal. An image enlarging device 60 including a storage unit 63 for storing the digital signal, and a plurality of image processing units 64 including a control unit 64a for partially reading out the stored image signal and enlarging and outputting the image signal; It comprises a control device 70 for controlling the image enlarging device 60, and a plurality of television monitors 80 for displaying the image signals output from the image enlarging device 60. The image signals are enlarged by the image enlarging device 60 to obtain a plurality of television monitors. It was supposed to be displayed on 80. However, with this configuration, the image enlarging device is complicated, and especially when the number of screens is large, not only the device becomes large and the cost becomes high, but also information such as characters cannot be combined with the video signal and displayed. There was a problem.

[0003]

SUMMARY OF THE INVENTION The present invention solves the problems described above, reduces the size of a single device, reduces the cost, displays information such as characters, and outputs the information as a video signal. It is an object of the present invention to provide a multi-video system that can be composited and displayed on the screen.

[0004]

In order to solve the above problems, the present invention provides a master personal computer which inputs a video signal, character information and the like, performs signal processing such as superimposing, and outputs a digital video signal, A video distribution device for distributing a plurality of digital video signals, a plurality of personal computers for storing the distributed digital video signals and performing signal processing such as partial enlargement, and a display unit for displaying video output signals from the plurality of personal computers. Are composed of a plurality of monitors that are arranged adjacent to each other, and the master personal computer stores a plurality of input video signals, information input from input means such as a keyboard of the master personal computer, or information input to a storage device. The computer is controlled to change the display position, etc. and display on multiple monitors.

[0005]

With the above configuration, information such as characters to be input or stored is superimposed on a video signal selected from a plurality of video source signals, and a desired portion of the combined video signal is enlarged. Can be displayed on multiple PC monitors.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multi-video system according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a system block diagram showing an embodiment of a multi-video system according to the present invention. In the figure, reference numeral 1 is a master personal computer, which inputs a video signal selected from a plurality of video source signals, converts it into a digital signal, performs signal processing such as superimposing, and outputs the signal, and processes the plurality of personal computers 3. It controls the image area to be displayed and the enlargement ratio. A video distribution device 2 distributes a plurality of digital video signals from the master personal computer 1. Multiple personal computers 3 (3a, 3b, 3c
.. 3i) stores the digital video signal distributed from the video distribution device 2 and performs video processing such as partial enlargement of a desired position of the stored video signal under the control of the master personal computer 1. There is. 4 (4a, 4b, ... 4
In i), a plurality of monitors respectively display video signals from the plurality of personal computers 2.

FIG. 2 shows a block diagram of the main part of the master personal computer 1. Reference numeral 11 in the figure is an image input section for inputting the image signal to be distributed. Reference numeral 12 is an A / D conversion means for converting the signal from the video input section 21 into a digital signal. A VRAM (1) 13 stores the digital signal from the A / D conversion means 12. A control unit 14 controls each unit according to a program stored in the ROM 15. Reference numeral 16 is an input means such as a keyboard for inputting information such as characters. Reference numeral 10a denotes a storage means such as a RAM, which stores information such as characters input by the input means. A ROM (2) 10b stores information such as characters in advance. A superimposing means 17 superimposes information such as characters stored in the storage means 10a or 10b on a video signal stored in the VRAM (1) 13. A VRAM (2) 18 stores the digital image signal for superimposing. A video output unit 19 sends the video signal stored in the VRAM (2) 18 to the video distribution device 2.
An I / F unit 20 exchanges information such as a processing area with the plurality of personal computers 3.

FIG. 3 is a block diagram of essential parts of the plurality of personal computers 3. Reference numeral 31 in the figure denotes a video input unit, which is the video distribution device 2
The digital video signal to be distributed more is input. A VRAM (1) 32 stores the signal from the video input unit 31. A control unit 33 controls each unit according to a program stored in the ROM (1) 34. Reference numeral 35 is an input means for inputting character information and control information. 36
Is an I / F unit for exchanging information such as a processing area with the master personal computer 1. 30 is a RAM, which is the input means 3
5 and information from the I / F unit 36 are stored. An area adjusting unit 37 adjusts the area read from the VRAM (1) 32 based on the processing area information stored in the RAM. Reference numeral 38 denotes a partial enlarging means for adjusting the area adjusting means 37 to enlarge the digital video signal of the processing area read from the VRAM (1). 39 is VRAM
In (2), the expanding digital video signal is stored. A video output unit 40 sends the digital video signal stored in the VRAM (2) 39 to the plurality of monitors 4.

The operation of the above arrangement will be described below. FIG. 4 is a diagram in which a video signal distributed from the video distribution device 1 is divided into a plurality of personal computers 2, the area a being the personal computer 3a, the area b being the personal computer 3b, and so on.
The i area indicates a video portion processed by the personal computer 3i. Images from television broadcasts, VTRs, and television cameras are subjected to image division processing by the master personal computer 1, and are divided into 9 in FIG. The divided data of these images is transferred to each of the personal computers 3a, 3b ... 3 via the I / F unit 20.
The data is transmitted to the I / F unit 36 of i, and each personal computer 3a, 3b.
..Controlling 3i and displaying the designated image display area,
For example, the personal computer 3a fetches the image data of the right ear portion of the image of the dog from the image data received from the image distribution device 2 and enlarges and displays it at the required enlargement ratio by the partial enlargement means 38. Further, when there is a gap between the display devices as shown in FIG. 5, if the gap data is input from the input means 35, the display image is displayed through the area adjusting means 37 by arithmetic processing so as to interpolate the gap portion. ing. FIG. 5 is a diagram in which the video signal divided in FIG. 4 is partially enlarged and is respectively displayed on the monitor 4. For example, the monitor 4a shows that the area a is enlarged and displayed. As can be seen from FIG. 5, since the monitor 4a and 4b and the monitor 4a and 4d are separated by only the frame portion of the monitor, the position of the image is displaced by the frame interval. FIG. 6 is a diagram displayed on the monitor 4 after being adjusted by the area adjusting means 37 in order to correct the deviation of the frame interval. In addition, the character of Fig. 6, "Hello"
Shows the character information input from the input means 16 of the master personal computer 1 by the superimposing means 17 being combined with the video signal and displayed.
The information stored in can also be combined. On the other hand, if the monitors 4a, 4b, ... 4i are flat displays such as plasma displays, the video output unit 4
A signal from 0 may be a digital signal, which is a pixel drive, which facilitates signal processing. Of course, it is also possible to use a cathode ray tube monitor for the monitors 4a, 4b ... 4i. Further, in the present example, the nine monitors are arranged in a quadrangle, but by arranging them in an arbitrary shape and controlling the display area from the master personal computer, the usage is significantly increased. For example, a monitor other than the video display area is provided, and character information such as commentary is displayed on the monitor from a personal computer, or a partial area is further enlarged and enlarged and displayed on a monitor other than the video display area. It can be used effectively.

[0010]

As described above, according to the multi-video system of the present invention, information such as characters to be input or stored is superimposed on a video signal selected from a plurality of video source signals, and the composite is performed. Since a desired part of the video signal to be displayed can be enlarged and displayed on a plurality of personal computer monitors, the size of one device can be reduced, the cost can be reduced, and information such as characters can be displayed and the information can be displayed. It is possible to provide a multi-video system capable of synthesizing and displaying a video signal.

[Brief description of drawings]

FIG. 1 is a system block diagram showing an embodiment of a multi-video system according to the present invention.

FIG. 2 is a block diagram showing a main part of a master personal computer in one embodiment of a multi-video system according to the present invention.

FIG. 3 is a block diagram showing a main part of a plurality of personal computers in an embodiment of a multi-video system according to the present invention.

FIG. 4 is a diagram showing an example of division of a video signal input to the multi-video system according to the present invention.

FIG. 5 is a diagram showing that the video divided in FIG. 3 is enlarged and displayed on each monitor.

FIG. 6 is a diagram showing that the positions of the divided images in FIG. 4 are adjusted and enlarged and displayed on the monitor.

FIG. 7 is a system block diagram showing a conventional multi-video system.

[Explanation of symbols]

 1 Master Personal Computer 2 Video Distributor 3 Plural Personal Computers 4 Plural Monitors 10aRAM 10bROM 11 Video Input Unit 12 A / D Converter 13 VRAM (1) 14 Controller 15 ROM 16 Input Means 17 Superimpose Means 18 VRAM (2) 19 video output section 20 I / F section 31 video input section 32 VRAM (1) 33 control section 34 ROM 35 input means 36 I / F section 37 area adjusting means 38 partial enlarging means 39 VRAM (2) 40 video output section 60 video Enlargement device 70 Control device 80 TV monitor

Claims (4)

[Claims] 1. A master personal computer for inputting a video signal, character information and the like to perform signal processing and outputting a digital video signal, a video distribution device for distributing a plurality of the digital video signals, and a digital video signal to be distributed. It is composed of a plurality of personal computers that store and process signals such as partial enlargement, and a plurality of monitors that display video output signals from the plurality of personal computers and that are arranged so that the display units are adjacent to each other. The master personal computer controls a plurality of personal computers to input information input from an input means such as a keyboard of the master personal computer, or information input to a storage device,
A multi-video system characterized in that the display position is changed so that the images are displayed on a plurality of monitors. 2. The master personal computer is provided with a superimposing means for enlarging, reducing, and synthesizing information such as characters input or stored in a stored video signal. Multi-video system. 3. The multi-video system according to claim 1, wherein the plurality of personal computers are provided with position adjusting means capable of changing the positions of the video signal to be enlarged and output, character information and the like. 4. The master personal computer provides a display area, an enlargement ratio,
2. The multi-video system according to claim 1, further comprising program means for instructing character information and the like, and for instructing the distributor to select a plurality of input video signals.