JPH07147660A - Display device for image signal of high resolution - Google Patents

Abstract

PURPOSE:To provide an inexpensive display device which can deal with image signals of high resolution. CONSTITUTION:This display device is provided with an input processing part 11 which converts the image signals of high resolution into the digital signals such as the RGB signals, etc., a storage part 12 which stores the converted digital signals, a video output part 13 which reads the digital signals out of the part 12 and divides the digital signals according to the number of monitors 14 and their arrangement to convert each divided digital signal into an NTSC signal, and plural monitors 14 which are arranged to form a single screen and to display the NTSC signals respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high resolution image signal display device, and more particularly to a display device using an NTSC type display device.

[0002]

2. Description of the Related Art Generally, an image signal used in a personal computer or a facsimile has a wider signal band and higher resolution than an image signal of the NTSC system used in a general television. Also, the aspect ratio of the image itself is the same as that used in personal computers and facsimiles.
It differs from the NTSC image.

Conventionally, in order to display a high-resolution image used in a personal computer or a facsimile on an NTSC television, a part of the image is cut out and displayed, and a part which cannot be displayed is scrolled on the screen. It can be displayed. In another method, an image is reduced and displayed so that it fits within the screen of an NTSC television.

[0004]

However, whichever method is used, there is a problem in that when a high-resolution image is displayed on an NTSC television screen, a decrease in resolution cannot be avoided. In addition, there is a problem that the range that can be displayed on the screen is inevitably narrowed when the resolution is increased.

The present invention uses the high resolution image signals used in personal computers, facsimiles, etc.
Without reducing the resolution on the SC television screen,
It is an object of the present invention to provide an inexpensive display device capable of displaying the entire image at one time.

[0006]

According to the present invention, an input processing unit for converting a high resolution image signal into a signal of a predetermined format,
A storage unit that stores the signal of the predetermined format output from the input processing unit, reads the signal of the predetermined format from the storage unit, divides the signal into n divided signals, and divides each of the n divided signals into an NTSC signal. A high-resolution image signal display device is obtained, which comprises a video output unit for converting to N.C. and a monitor unit in which n NTSC image display devices to which the n NTSC signals are respectively input are arranged.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. As shown in FIG. 1A, the display device of the present embodiment has an input processing unit 11, a storage unit 12, a video output unit 13, and a plurality of liquid crystal monitors 14. The LCD monitor 14 is shown in FIG.
As shown in (b), the number and arrangement are such that the plurality of liquid crystal monitors 14 form one rectangular display screen.

The input processing section 11 is connected to a personal computer, a facsimile or the like. Then, the high resolution image signal input from these devices is converted into a predetermined signal. For example, if it is a monochrome image signal, it is sampled and converted into a digital signal. If it is a color image signal, it is converted into a digital signal by performing separation processing into an RGB signal or a luminance signal and a color difference signal.
The image signal converted into the digital signal is output to the storage unit 12.

The video output unit 13 reads out the digital signal stored in the storage unit 12. At this time, cutting is performed according to the number of liquid crystal monitors 14 and their arrangement. As a result, the digital signal is divided so as to correspond to the plurality of liquid crystal monitors 14. Then, the video output unit 13
Performs necessary processing such as composite processing (in the case of color image) and addition of a synchronizing signal on each of the divided digital signals to convert into an NTSC signal, which is output to the liquid crystal monitor 14. In this way, an image can be displayed on an NTSC television screen (display screen) without reducing the resolution of the high resolution signal.

For example, an A4 size image 21 is shown in FIG.
When a high-resolution image signal having horizontal 1600 pixels and vertical 2400 pixels as shown in (a), the liquid crystal monitor 22 having horizontal 590 pixels and vertical 480 pixels as shown in FIG.
In order to display by using, 3 units (1600
/590=2.7), 5 vertically (2400/48)
The monitor (0 = 5) may be arranged as shown by the broken line in FIG. Then, as shown by the solid line in FIG.
NTS A4 size images without reducing resolution
It can be displayed on a C-type television screen (display screen). Here, it is assumed that the respective monitors are adhered to each other so that no gap is generated, and that the display screens of the respective monitors and the spatial screen position of the NTSC signal are completely matched.

Although the liquid crystal monitor is used in the above embodiment, a device such as a projector may be used. The number of monitors may be determined according to the number of pixels of the image to be displayed and the number of pixels of the monitor used, and is not limited to the above example.

[0012]

According to the present invention, the high resolution image signal is divided and converted into the NTSC signal, and the divided NTSC signals are displayed on the image display device respectively, so that the resolution is reduced without any deterioration. The screen can be displayed. Further, since the image display device of the NTSC system is used, it is inexpensive.

[Brief description of drawings]

1A is a block diagram of an embodiment of the present invention, and FIG. 1B is a diagram showing a display screen.

FIG. 2 is a diagram for explaining the relationship between a display image and a monitor of the high resolution image signal display device of FIG.
(A) is a display image, (b) is a monitor screen, (c) is a figure which shows a display screen.

[Explanation of symbols]

 11 Input Processing Section 12 Storage Section 13 Video Output Section 14 LCD Monitor 21 Image 22 LCD Monitor

Claims (3)

[Claims] 1. An input processing section for converting a high resolution image signal into a signal of a predetermined format, a storage section for storing the signal of the predetermined format output from the input processing section, and a signal of the predetermined format from the storage section. And a video output unit for converting each of the n divided signals into an NTSC signal, and n divided NTSC image display devices to which the n NTSC signals are respectively input. A high-resolution image signal display device having an arrayed monitor section. 2. The high resolution image signal display device according to claim 1, wherein the signal of the predetermined format is an RGB signal. 3. The high resolution image signal display device according to claim 1, wherein the signals of the predetermined format are a luminance signal and a color difference signal.