JPS61285877A - Picture display system - Google Patents

Abstract

PURPOSE:To display simultaneously the same picture as the displaying image on a large-sized picture display device at a video monitoring system and to improve a displaying function by converting digitally-processed picture data to display with the large-sized picture displaying device into a video signal by a digital/video converter. CONSTITUTION:Picture data for a large-sized picture displaying device 2 outputted and digitally-processed from a picture data output device 3 are inputted and displayed through a switcher 4 to the large-sized picture displaying device 2 in accordance with the system control signal outputted by a computer 1. On the other hand, the digitally-processed picture data are inputted even to a digital/video converter 5, and the developing processing is executed. Namely, the digitally-processed picture data are converted to the video signal which is the video signal to apply the vertical and horizontal synchronizing signals, etc. The video signal is inputted through a switcher 6 to respective video monitors of a video monitoring system 7, and the same picture as the large-sized picture displaying device 2 is simultaneously displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image display system in which an image displayed on a large-sized image display device can also be displayed on a video monitor.

[Conventional technology]

2. Description of the Related Art Large image display devices such as solid-state displays and video monitor systems such as CCTV are installed at stadiums, racetracks, and boat racecourses in order to display competition results, finishing order, etc. in an easy-to-read manner to the public. In addition, when outputting and displaying data such as the results of the above competitions on the above video monitor system, the video signal of this data is sampled and integrated using, for example, a gate pulse, and the bottom pressure is superimposed on this to display the above data. There has been provided a large-sized image display device in which the same image is displayed on the large-sized image display device manually.

[Problem that the invention seeks to solve]

Conventional image display systems are configured as described above, so although it is possible to digitally process the same image as a video image and display it on a large-sized image display device, it is also possible to perform digital signal processing and display the same image on a large-sized image display device. There is a problem in that the image input and displayed on the image display device cannot be displayed as is on the video monitor. This is because the pixel density of large-sized video display devices is coarser than the scanning line density of video monitors (for example, 525 lines in one frame) and cannot be easily used as a video signal as is.

This invention was made to solve the above-mentioned problems, and it converts a digitally processed image signal to be displayed on a large-sized image display device into a video signal (television signal) using an appropriate digital/video converter. The object of the present invention is to obtain an image display system that can simultaneously display the converted images on a video monitor.

[Means for solving problems]

In the image display system according to the present invention, an image data output device outputs image data subjected to digital signal processing to a large image display device, the image data is converted into a video signal by a digital/video converter, and the video signal is converted into a video signal. The configuration is such that the input data is input to a monitor and the image is displayed.

[For production]

The digital/video converter according to the present invention has a digital image expansion function of a digital image signal supplied to a large-sized image display device, and converts the digital image data into a video signal in vertical and horizontal synchronization.

This video signal is input to a video monitor system that displays on each video monitor the same image that is displayed on the large image display.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a computer for controlling an image display system, 2 is a large image display device such as a solid-state display, and 3 is a computer for digital processing on the large image display device 2. A switcher 15 selects and outputs one channel of image data from the image data output device 3 and converts the digitally processed image signal selected by the switcher 4 into a video signal. 6 is a switcher that selects and outputs one channel of video signal to each video monitor of a video monitor system 7 such as CCTV.

Next, the operation of this image display system will be explained.

First, image data for the large image display device 2 that has been output from the image data output device 3 and has been digitally processed is sent to the large image display device 2 via the switcher 4 in accordance with a system control signal output from the computer 1. entered and displayed.

On the other hand, the digitally processed image data is also input to the digital/video converter 5 and subjected to expansion processing. That is, digitally processed image data is converted into a video signal, which is a video signal to which vertical and horizontal synchronization signals and the like are added. This video signal is input to each video monitor of the video monitor system 7 via the switcher 6, and the same image as the large image display device 2 is displayed simultaneously. In this case, the switchers 4 and 6 select one channel of image data from multiple channels, and
They act to output to a large image display device 2 and a digital/video converter or video monitor system 7, respectively.

In addition, when performing the expansion processing of the above image data,
In the converted video image, the area A where there is no image (outside the screen area of the large image display device) is converted to C as shown in FIG.
On the RT screen 8, the same color, for example, black, area B
It is necessary to develop the image of the large-sized image display device.

In this way, the same image displayed on a large image display device as a large screen at a racetrack can be simultaneously displayed on a video monitor installed outside the racetrack, so it is possible to display a large amount of necessary data and advertisements in addition to the order of finish. A person is forced to take care of him.

〔Effect of the invention〕

As described above, according to the present invention, digitally processed image data for display on a large-sized image display device is configured to be converted into a video signal by a digital/video converter. The same image as the display image can be simultaneously displayed on the video monitor system, which has the effect of improving the display function.

[Brief explanation of the drawing]

FIG. 1 is a block connection diagram of an image display system according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a display situation on a CRT screen. 2 is a large image display device, 3 is an image data output device, 5 is a digital/video converter, and 7 is a video monitor system 0 Patent applicant: Mitsubishi Electric Corporation Figure 1

Claims (1)

[Claims] A large image display device such as a solid-state display, an image data output device that outputs image data subjected to digital signal processing to the large image display device, a digital/video converter that converts the image data into a video signal, and a digital/video converter that converts the image data into a video signal. An image display system equipped with a video monitor that plays and displays the video signal output by the converter.