JP2003309824A - Image display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display system for dividedly imaging optically consecutive high resolution images so as to obtain a high resolution even in a moving picture state, storing the divided imaged images within the same time, and displaying the stored images as images with a high resolution equivalent to that of a photo. <P>SOLUTION: Four SDI signals each having the same number of pixels as that of an HDTV image outputted in parallel from a camera 15 are fed to a PCI board 18 and captured therein. Since the processing speed of a PCI bus is slow and a CPU cannot capture signals by one image pattern at a speed of an HDTV synchronizing signal, a memory provided in the PCI board 18 stores one image pattern of moving picture data as a still picture. The stored image data are read from the memory and transferred to the CPU in matching with the processing speed of the PCI bus, and the image data are outputted from a video card 19 as DVI (Digital Visual Interface) signals. A TMDS (Transmission Minimized Differential Signaling) receiver 10 and a liquid crystal controller 11 in a display card 8 convert the received DVI signals into display signals and a liquid crystal display apparatus 12 displays the display signals. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display system, and particularly to a high definition television (HDT) such as a high definition system.
The present invention relates to an image display system for displaying a high-definition high-quality image similar to a photograph at high speed by using an image pickup device having a pixel number equal to or higher than V: High Definition TV) image.

[0002]

2. Description of the Related Art As a conventional image display system, a video display system using a digital transmission system for a flat panel monitor has been proposed (Japanese Patent Laid-Open No. 2001-13927).
Issue). This is DDWG (Digital Display Working)
DVI (Digital Visual Inter), an interface standard for digital displays released by the Group.
face) According to the standard.

FIG. 3 shows a block diagram of an example of a conventional image display system according to the DVI standard. In the figure, the scanner 1 images a still image subject 2 and outputs a high resolution image signal. In this case, SCSI (Smal
Computer system interface), RS-232C, and other electrical standard signals are used.

An image signal from the scanner 1 is transmitted to the PCI via a dedicated connector 4 of a CPU (central processing unit) body 3.
Supplied to board 5. The PCI board 5 is a PCI board according to the same interface standard as the scanner 1 and uses a high-resolution image signal picked up by the scanner 1 as a CPU.
Take in the main body 3. The scanner 1 may be replaced by a digital camera. In the CPU main body 3, after performing a predetermined calculation on the captured high resolution image signal as necessary,
File.

The CPU body 3 outputs the filed image signal from the DVI connector 7 as a DVI signal from the video card 8 according to the DVI standard. Video card 8
Is a video interface, TMDS (Transmission M
The TMDS transmitter forms an output signal according to the DVI standard.

A liquid crystal display 12, for example, is used as the display device. A display card 8 is prepared for the liquid crystal display 12, and the DVI signal sent from the video card 6 is input through the DVI connector 9. The display card 8 is a TMDS receiver 10,
The liquid crystal controller 11 converts the input DVI signal into a liquid crystal display signal and supplies it to the liquid crystal display 12 to display it as an image.

As an example of a liquid crystal display, in recent years, a high resolution liquid crystal monitor (model name T220, T221, etc.) of QUXGA-W (3840 × 2400) from IBM Co., Ltd. has been used in recent years in order to display an image similar to a high resolution photograph. It has become commercially available. The input of this LCD monitor is D
It is formed according to the VI standard.

[0008]

By the way, it has not been considered in the past to capture a moving image of sports, animals, etc., and display a high-resolution image similar to a photograph from this moving image. Conventionally, when trying to obtain a high resolution image similar to a photograph,
Since the number of pixels is insufficient for HDTV signals, it is necessary to separately prepare equipment mainly for still images such as a camera and a digital camera.

In order to obtain a high resolution comparable to that of a photograph, for example, the number of input pixels is A4 size (about 30 cm × 2).
If the pixel density is 12 dots / mm for printing on a recording paper of 0 cm), 3600 dots × 2400 dots are required as an approximate number of pixels. However, the number of pixels in a TV image is 640 × 480, and the number of pixels in an HDTV image is only 1920 × 1080.
It is necessary to prepare an image input device having four times as many pixels as the image (3840 × 2160).

However, a television camera having four times the number of pixels for HDTV is not currently on the market, and there is a problem in that a high resolution line scanner or a digital camera cannot handle a moving image with only a still image. In particular, it is difficult to capture a predetermined image that is considered necessary and instantly display it as a photograph-like image while observing a high-resolution image, which is a major problem. For example, in the conventional image display system shown in FIG. 3, it takes tens of seconds to tens of minutes to capture an image from the scanner 1 to the CPU body 3.

The present invention has been made in view of the above points,
By obtaining a high resolution even in a moving image state by dividing and capturing an optically continuous high resolution image, the divided captured images are stored at the same time and displayed as a high resolution image similar to a photograph. It is an object of the present invention to provide an image display system capable of performing.

[0012]

In order to achieve the above object, the present invention stores a plurality of image pickup signals obtained by using an image pickup apparatus having a larger number of pixels than the number of pixels of an HDTV image, and the image pickup signals are stored. Is an image display system for converting a display signal for display to display on one screen of a display device, and an image pickup unit for photoelectrically converting a light image of a subject and outputting a plurality of image pickup signals in parallel; A storage unit for simultaneously storing the plurality of output image pickup signals, and the plurality of image pickup signals stored in the storage unit are converted into a display display signal having a display speed timing equal to or higher than the synchronization signal of the image pickup signal. A signal converting means for outputting and a display display signal are supplied, and an image based on this display display signal is displayed as one image at a display speed equal to or higher than the synchronizing signal of the image pickup signal. It is obtained by a structure comprising a display device for displaying on the same screen.

According to the present invention, when displaying a high-resolution image having a large number of pixels composed of a plurality of image pickup signals, the plurality of image pickup signals are converted into display display signals at timings equal to or higher than the synchronizing signal of the image pickup signals. Since the image is converted and displayed as a single image on the same screen of the display device at a display speed equal to or higher than the synchronization signal of the image pickup signal, a high-resolution image with a high pixel count composed of a plurality of image pickup signals can be displayed at high speed. Can be displayed.

In order to achieve the above-mentioned object, the present invention photoelectrically converts a subject light image to output a plurality of SDI signals based on the HDTV standard in parallel, and a plurality of image output means. Storage means for simultaneously storing the SDI signal and DV for storing the plurality of SDI signals stored in the storage means
The signal converting means for converting into the I standard DVI signal and the DVI signal output from the signal converting means are supplied to the DV signal.
The display device displays the image based on the I signal as one image on the same screen.

According to the present invention, a plurality of SDI signals are transmitted to DVI.
Since it is converted into a signal and displayed as a single image on the same screen of the display device, a high-resolution image with a high pixel count composed of a plurality of SDI signals can be displayed on the display device.

Furthermore, in order to achieve the above object, the present invention picks up one subject optical image in a plurality of divided image pickup areas each having the same number of pixels as the number of pixels of the HDTV image, and photoelectrically converts the image. An image pickup unit that converts image pickup signals from the plurality of divided image pickup areas into SDI signals based on the HDTV standard and outputs the SDI signals in parallel, and a plurality of SDI signals that are output in parallel from the image pickup unit in series / parallel. Storage means for simultaneously storing after conversion and a plurality of SD read from the storage means
A signal converting unit for converting the I signal into a DVI signal conforming to the DVI standard and the DVI signal output from the signal converting unit are supplied, and an image based on the DVI signal is displayed on the same screen as one image. And a display device that operates.

According to the present invention, since a plurality of SDI signals each having the same number of pixels as the number of pixels of the HDTV image are converted into DVI signals and displayed as one image on the same screen of the display device, the HDTV image is displayed. It is possible to display on the display device a high resolution image having a high number of pixels that is a multiple of the number of pixels of In the above invention, since the image pickup means is a means for outputting a plurality of image pickup signals, one image pickup device may output a plurality of image pickup signals, or one image pickup device outputs one image pickup signal. It may be configured to output one image pickup device.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of a first embodiment of an image display system according to the present invention. In the figure, the same components as those in FIG. 3 are designated by the same reference numerals. In FIG. 1, the camera 15 has four pixels, which is the number of pixels of an HDTV image.
An image pickup apparatus having an image pickup device having twice the number of pixels (3840 × 2160), which images a subject, converts it into an image pickup signal which is an electric signal, and further parallelizes the image pickup signal as four serial digital signals for HDTV. Output.

That is, the camera 15 picks up one continuous subject light image in each of the four divided image pickup areas having the same number of pixels as the HDTV image, picks up the image in each image pickup area, and further digital signals. 4 HD converted to
The TV digital signal is output in parallel. This digital signal is transmitted, for example, by the Broadcast Technology Development Council (BTA: Broa).
Standard BTA by dcasting Technology Association)
This is the SDI signal of S-004B.

Each H output from the camera 15 in parallel
The four SDI signals with the same number of pixels as the DTV image are
CPU body 16 through BNC connector 17 of body 16
It is supplied to the PCI board 18 inside and taken in. PC
The I-board 18 is configured so that the 4-parallel SDI signal can be taken into the CPU body 16. For example, 4 in the serial / parallel converter
After converting the SDI signals, which are serial signals input in parallel, into parallel digital signals, the color difference conversion unit converts the luminance signal Y of the input parallel digital signals and the color difference signals Pb and Pr into R (red) which are three primary color signals. , G (green) and B
It is converted into a (blue) color signal and is fetched as image data into a CPU (not shown) in the CPU body 16.

Here, each of the four SDI signals input in parallel to the PCI board 18 is a serial digital signal, and each of the serial / parallel converters has, for example, 10 bits (the signal line is synchronized with 10 lines). Component plus) parallel digital signal. Therefore, the above series /
From the parallel converter, four sets of parallel digital signals are taken out through 40 or more signal lines.

The speed of the PCI bus is low, and at the HDTV sync signal speed, the above four sets of parallel digital signals (4 parallel S
Since the signal for one screen by DI signal cannot be taken into the CPU, one screen of the moving image data is treated as a still image first by PCI.
It is stored in the memory provided in the board 18. And PC
The stored image data is read from the memory and transferred to the CPU in accordance with the speed of the I bus. In this case, the time required is about 1
It is less than 5p (that is, the speed of transferring 15 images per second). Note that p is an abbreviation for progressive. Incidentally, the camera 15 outputs 60 images of the interlace system (60i) per second or 30 images of the progressive system (30p) per second.

The image data (SDI signal) taken in by the CPU (not shown) in the CPU body 16 is output as a DVI signal from the video card 19 according to the DVI standard via the DVI connector 20. The video card 19 comprises a video interface and a TMDS transmitter, and the TMDS transmitter forms an output signal according to the DVI standard.

Here, for example, a liquid crystal display 12 is used as a display device. A liquid crystal display 12 is provided with a display card 8 and a video card 19
The DVI signal sent from is input. The display card 8 converts the input DVI signal into a liquid crystal display signal by the TMDS receiver 10 and the liquid crystal controller 11, supplies the liquid crystal display signal to the liquid crystal, and displays it as an image.
In case of RT, CRT instead of LCD controller 11
A controller is used. ).

As an example of the liquid crystal display, the QUXGA-W commercially available from IBM Corporation in recent years for displaying the above-mentioned high resolution photograph-like image.
(3840x2400) high resolution LCD monitor (model name T
220, T221, etc.) can be used. The input of this high-resolution LCD monitor is configured in accordance with the DVI standard.
U-side video cards are also commercially available. In this case, the display speed is 40p to 85p.

Therefore, in this embodiment, the camera 15 to the PCI board 18, the CPU body 16, the video card 1 are connected.
9. The speed displayed on the liquid crystal display 12 via the display card 8 is limited by the PCI board 18 and is about 15 p or less. This display speed is sufficiently higher than that of the conventional example.

Next, a second embodiment of the image display system of the present invention will be described. FIG. 2 shows a block diagram of a second embodiment of the image display system according to the present invention.
In the figure, the same components as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 2, four S's, each of which has the same number of pixels as the HDTV image, are output in parallel from the camera 15.
The DI signal is supplied to the high-speed DVI conversion board 21 via the BNC connector 22, and is converted into a DVI signal here.

That is, the high speed DVI conversion board 21 is
The SDI signals, which are serial signals input in four parallels via the BNC connector 22, are converted into parallel digital signals by the serial / parallel converter 23, and then the color difference converter 2
4, input parallel digital signal luminance signal Y, color difference signal P
b and Pr are converted into R (red), G (green) and B (blue) color signals which are three primary color signals.

Subsequently, the high speed DVI conversion board 21 supplies the color signals converted by the color difference conversion unit 24 to the time axis adjustment buffer memory 25, where the time axis is changed from the timing of the four parallel SDI signals to the timing of the DVI signals. Adjust and T
The digital signal is supplied to the MDS transmitter 26 and converted into a digital signal (that is, a DVI signal) compliant with the DVI standard. This TM
The DVI signal transmitted from the DS transmitter 26 is a high-speed DV.
It is output via the DVI connector 27 of the I conversion board 21, and is displayed on the liquid crystal display 12 by the TMDS receiver 10 and the liquid crystal controller 11 of the display card 8.

Here, the time axis adjustment buffer memory 25 converts the input four sets of parallel SDI signals into the DVI signal timing for one screen. For example, when the SDI signal is 30p, it is left as it is and 60i When is 30p
Convert to signal. The liquid crystal controller 11 converts the 30p signal, which is a DVI signal, into 60p × 2 times = 30p.
By displaying the same display twice on the liquid crystal display 12 as a signal, the display speed of the liquid crystal display 12 is 40p.
It can be used within ~ 85p. It goes without saying that if the camera side is 60p, it can be displayed at the same speed. As described above, in this embodiment, the high-definition moving image signal of the camera 15 can be displayed in high-definition images at substantially the same high speed.

The present invention is not limited to the above-described embodiments. For example, an image pickup apparatus which outputs an SDI signal can be used as a single image pickup apparatus if the timing of the synchronization signal of the SDI signal matches. There is no limitation to the device (camera 15), and it goes without saying that a plurality of imaging devices may be used. Further, the number of pixels of the image pickup device is four times as large as that of the HDTV image, however, the number of pixels may be plural times other than this. Furthermore,
The CPU main body 16 and the high-speed DVI conversion board 21 use the same display device (the liquid crystal display 12 or the like) as a single image with four or more image signals at a display speed equal to or higher than the synchronization signal of the image signals. ) Can be displayed.

[0032]

As described above, according to the present invention,
When displaying a high-resolution image with a high pixel count that consists of multiple image signals, you can instantly display a high-resolution image that is similar to a photograph by capturing the necessary predetermined image and capture multiple image signals. By converting to a display signal for display with a timing of display speed equal to or higher than that of the signal synchronization signal, and displaying as a single image on the same screen of the display device at a display speed equal to or higher than the synchronization signal of the imaging signal, Since a high-resolution image with a high pixel count composed of a plurality of image pickup signals can be displayed at high speed, it is possible to display a high-resolution moving image on a display device as high as a photograph.

Further, according to the present invention, by converting a plurality of SDI signals into DVI signals and displaying them as one image on the same screen of the display device, a plurality of SDI signals can be obtained.
Since a high-resolution image composed of a signal and having a large number of pixels is displayed on the display device, it is possible to take a predetermined image considered necessary by using the existing technology and instantly display a high-resolution image similar to a photograph.

Further, according to the present invention, by converting a plurality of SDI signals each having the same number of pixels as the number of pixels of the HDTV image into DVI signals and displaying them as one image on the same screen of the display device. Since a high-resolution image having a high number of pixels that is a multiple of the number of pixels of the HDTV image is displayed on the display device, a high-definition moving image having a higher resolution than the HDTV image can be displayed on the display device.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment of a system of the present invention.

FIG. 2 is a block diagram of a second embodiment of the system of the present invention.

FIG. 3 is a block diagram of an example of a conventional system.

[Explanation of symbols]

8 display cards 10 TMDS receiver 11 LCD controller 12 LCD display 15 camera 16 CPU body 18 PCI board 19 video cards 21 High-speed DVI conversion board 23 Serial / Parallel Converter 24 Color difference converter 25 time axis adjustment buffer memory 26 TMDS transmitter

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5C022 AB00 AB61 AB68 AC01 AC42                       AC69                 5C063 AA11 AB03 BA06 CA29                 5C082 AA27 BA12 BA34 BA35 BB03                       CA84 CB01 DA53 DA76 DA86                       MM09 MM10

Claims (3)

[Claims] 1. A screen of a display device, which stores a plurality of image pickup signals obtained by using an image pickup device having a larger number of pixels than the number of pixels of an HDTV image, converts the image pickup signals into a display signal for display. An image display system for displaying on the above, comprising: an image pickup means for photoelectrically converting a subject light image to output a plurality of image pickup signals in parallel; and a storage means for simultaneously storing the plurality of image pickup signals output from the image pickup means. A signal conversion unit that converts the plurality of image pickup signals stored in the storage unit into a display display signal at a timing having a display speed equal to or higher than a synchronization signal of the image pickup signal and outputs the signal. Is supplied, and an image based on the display display signal is displayed on the same screen as a single image at a display speed equal to or higher than the synchronizing signal of the image pickup signal. The image display system characterized by comprising a play device. 2. An image pickup means for photoelectrically converting a subject light image to output a plurality of SDI signals based on the HDTV standard in parallel; a storage means for simultaneously storing a plurality of SDI signals output from the image pickup means; A signal conversion unit that converts a plurality of SDI signals stored in the storage unit into a DVI signal of the DVI standard, and the DVI signal output from the signal conversion unit are supplied, and an image based on the DVI signal is output as a single image. An image display system comprising: a display device that displays an image on the same screen. 3. A single optical image of a subject is imaged and photoelectrically converted in a plurality of divided image pickup areas each having the same number of pixels as the number of pixels of an HDTV image, and image pickup signals from the plurality of divided image pickup areas are obtained. Image pickup means for converting the SDI signals based on the HDTV standard and outputting them in parallel; and storage means for simultaneously storing the plurality of SDI signals output in parallel from the image pickup means after serial / parallel conversion, and The plurality of SDI signals read from the storage means,
A signal conversion means for converting into a DVI signal conforming to the DVI standard, and a display to which the DVI signal output from the signal conversion means is supplied and which displays an image based on the DVI signal as one image on the same screen An image display system comprising: a device.