JPS6193780A - Resolution number increasing method in image pickup and display - Google Patents

Abstract

PURPOSE:To increase the number of resolutions by projecting an object constituting one pattern to plural two-dimensional photodetectors while splitting the object properly and combining the picture information obtained at each two-dimensional photodetector to display a two-dimensional picture possible for reducing the picture element pitch. CONSTITUTION:The luminous flux from a picture 50 is projected on image pickup elements 10a-10d through a hole of aperture plates 20a-20d via a lens 40 and half mirrors 30a-30c. A hole 21 being nearly 1/4 of the cell size in the same pitch as that of the photodetector cell 11 of the image pickup element 10 is formed on the aperture plate 20 and only the luminous flux corresponding to minute areas A11, A12... of the picture 50 is transmitted selectively by the aperture plate 20a. Each photodetector cell 11a of the image pickup element 10a receives the luminous flux passing through the hole 21a and only the picture information of the areas A11-A12... split virtually from the picture 50 is stored in the image pickup element 10a.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to image display, and more specifically, a method for increasing the number of resolutions when capturing an image using a two-dimensional light receiving element and displaying the two-dimensional image. Regarding.

(Prior Art) Currently, a home TV screen has 525 scanning lines using interlaced scanning, which makes one screen every 1/30 seconds. If the screen ratio is 3=4, the number of horizontal resolutions is 700 lines (counting as 2 lines in the black and white pattern), which is approximately 5 MHz in the R wave number band, and the horizontal resolution of the display is approximately 32 OTV lines. On the other hand, TV systems for monitors are commercially available, and when using this system to directly connect the monitor TV camera and monitor CR7, the frequency band can be widened (or narrowed), and the horizontal resolution that can be displayed is 200 to 800 TV. Realizing the book.

On the other hand, high-resolution color CRT display devices have also been developed, and devices with about 1000 scanning lines have been tested and announced. The target resolution in the horizontal and vertical directions is about two to three times that of current commercial TV broadcasting.

(Problem to be Solved by the Invention) In order to increase the resolution of displayed images, it is necessary to fundamentally change the current system or method.1 For example, in current commercial TV broadcasting, as mentioned above, the scanning line Number 525,
Assuming a horizontal resolution of 700 lines, the frequency band for the resolution is approximately 5.5MHz, which means that if you try to double the resolution for both vertical and horizontal directions, the vertical resolution will be 1050 lines,
1400 horizontal lines.

The frequency band for the resolution is approximately 22.05 MHz. Furthermore, if you double the vertical and horizontal directions, the vertical
There are 100 lines and 2800 lines horizontally, and the frequency band for resolution is approximately 88.2 MHz. In this way, if we try to increase the number of resolutions, the frequencies to be handled will become higher, and various problems will arise in order to achieve this.

The present invention is based on the conventional device at the current state of the art.
The objective is to provide a new method that can increase the resolution, that is, the number of resolutions.

Even if the experimental version mentioned above is available, it is too expensive compared to the current commercially available version, so one solution is to follow the conventional method but come up with a new idea to solve the economic difficulty. It is. On the other hand, if we ignore economic aspects and use something that is still in the experimental stage, it provides a new method that can further increase the number of resolutions.

(Means for Solving the Problems) The present invention has a 1:1 correspondence between an image as a subject and a display image, so that an image of a subject as a whole can be received by a single imaging means, but instead of being received by a plurality of imaging means. The IS image of the subject is spatially regarded as a set of m partial images, and these partial images are received in parallel and individually by the conventional imaging means with the conventional resolution number, and each individual Image information is combined and processed to display a two-dimensional image with a reduced pixel pitch and an increased number of pixels.

As a specific means, for the sake of simplicity, if we consider a planar image as the subject below, the projection image (2) obtained by projecting the image (1) as the subject is divided into multiple parts, and the divided projected image is (3), (3>, ......, (3) with multiple two-dimensional light receiving elements (4) l (4)
, ..., (4). If this number of resolutions is equivalent to the number of conventional resolutions, multiple pieces of image information with the number of conventional resolutions exist in parallel and simultaneously, and the amount of bud information obtained by the entire imaging system is equal to the number of conventional resolutions. The amount is multiple times the amount a (four times when four two-dimensional light receiving elements are used).

Details of the imaging system will be explained in Example 1.

Image information is basically transmitted through multiple channels (5). It may be a wired system, such as a plurality of cables, or a wireless system, such as a plurality of broadcast waves that do not interfere with each other, and it is also possible to combine each image information, for example, to synthesize it and transmit it on a single channel.

Further, the timing of scanning in the image pickup device may be adjusted to match the timing of the scan in the display of a single electron gun CRT and the scan of each image pickup device.

Transmission information is basically received by a plurality of independent receivers (6). However, all information is received and one system is extracted, or only one system may be received from the beginning. In this case, the received image r is equivalent to the conventional resolution number.
h'hZb-afMl:°v゛cl! ! mf1
3 Ti! ''<4° display basically uses a display device (7) capable of high resolution display.If the display device uses the same technique and has a reversible relationship with the above high resolution imaging system, It is sufficient to demodulate the received information as it is, and if the display uses a different method, it may be possible to do this by, for example, matching the scanning during imaging with the scanning of the display, or by interposing a memory device (8). The 0 display that converts the display method will be explained in the second embodiment.

(Function) Each two-dimensional light receiving element (4), (4),...1 (4
) is given to the display device (7), the pixel pitch is reduced, that is, the number of resolutions is increased.
A dimensional image is displayed. Note that by selecting a part of all the q images and using them, it is possible to display an image with the same resolution as the conventional one using currently commercially available devices.

Hereinafter, a more specific explanation will be given based on examples.

Figure 2 above shows the imaging system according to the present invention in a simplified manner.
) is a two-dimensional solid-state image sensor (hereinafter referred to as an image sensor), (
20) is an aperture plate disposed in front of the image sensor (10), (30) is a half mirror 1 (40) is a lens for projecting an image (50) as a subject;
), the light flux from the lens (40) and the half mirror (30
a) + (30b), (30c), pass through the holes (below) of 7 percha plates (20a), (20b) + (20cl + (20d)), and image sensors (10a), (10b).
The image is projected onto +<l0C)+(10d).

As illustrated in Figure 1 (B), the aperture plate (20) has holes (21) formed at the same pitch as the light receiving cells (11) of the image sensor (10) and approximately 1/4 of the cell size. Taking Figure 2 (B) as an example, there are 7 percha plates (
20a), a small forehead area A in the image (50).

Only the light beams corresponding to A I 21 A I 31 . . . are selectively transmitted. Each light-receiving cell (lla) of the imaging cable (10a) receives the light flux that has passed through the hole (21a), and the image sensor (10a) receives the virtually divided minute areas A1. .

Only image information of A, , A, . . . is stored.

Other minute area B111B+21 of image (50)...
CIl.

C, 2,..., D I l I D I 21...
Similarly, each 7 percha plate (20b) = (
The same luminous flux is divided by 20c) and (20d), and image information corresponding to each 1 (IJ! element (10b), (10c), (10d)) is provided.

FIG. 2(C) shows the holes (21a) in each of the seven pertier plates relative to the light-receiving cells (11) that are optically in the same position.

The relative relationships among (21b), (21c), and (21d) are illustrated for illustration.

X supervision salmon and gen FIG. 3 shows another example of the imaging system.

(60) is an integral multiple of the resolution of the image sensor used here (
In this example, the integer number (4 times) of optical fibers corresponding to
In this example, it is divided into 4 pieces) and bundled, and each light has a 7-eye μ bundle (60a)l(60b)-(60c)l(60d).
The branched ends of the optical fibers are regularly arranged on the imaging surface (70) of the lens (40), forming an optical fiber arrangement surface (71). The other end of the optical fiber bundle (60) is connected to the image (50
) are selectively bundled and brought together closely according to the manner of division of the tubes to form a projection end surface (80) having the same size as the light-receiving surface of the imaging probe. This projected end surface (80
a) * Imaging devices are installed in each of (80b), (80c), and (80dl) so as to closely face each other.

Micro area A1 of image (50). is imaged on the micro area all of the optical fiber array surface (71) via the lens (40).

In this minute area all, one end (one or more) of the 7 Aiba Higashi (60a) is arranged, and the light of a is guided to a predetermined location (left corner in the figure) of the projection end surface (80a). .

Similarly, the imaging microscopic areas 11z+cz+d+1 of the microscopic forehead areas B, , C, , D, of the image (50) are also projected on the projection end surface ( 80b).

(80c) and (80d) are guided to predetermined locations (shown as the left corner like al, but not necessarily in the same positional relationship). The guided light flux, that is, the light flux from the image (50), is selectively divided by the optical fiber array surface (71), and the partial light fluxes are divided by each projection end surface (80a) + (
80b), (80c)+<80dl is projected onto the 1 (lit child (not shown)) closely opposite. Preferably,
The entire area of one light-receiving cell is configured to receive a projected image of one imaging micro-area. This has the advantage of being able to extract pixel signals with a high S/N ratio.

Figure 4 shows another example of the imaging system.

This embodiment is similar to Embodiment 1-2 in that an optical fiber bundle (61) is used, but the arrangement of the optical fibers on the imaging plane (70) is different. Instead of a mosaic arrangement as in Example 1-2, the M image plane (70) is divided into g, several (four in this example) rectangular surfaces, and light is applied to each of the divided parts. The fibers are arranged in such a way that one end of the fibers is tightly gathered together. The image sensor (not shown) is an optical fiber bundle (61)
It is installed so as to closely face the projection end surface (81) at the other end.

As shown, the divided area A of the image (50) is the lens (4).
0), passes through the optical fiber bundle (61a), and is projected onto the image sensor facing the projection end surface (81a). In the same way, for the divided areas B, C, and D, the corresponding optical fiber Song (61b>
+(61c) and (61d) and are projected onto the respective image sensors.

In the first embodiment, image information of the conventional resolution number is obtained from each image sensor, and these image information are obtained in parallel in terms of time. However, it is also possible to obtain serial image information by making the scanning times of the parallel image information different from each other.

K Arashi Takumi on top Figure out how to display it.

Display devices with a cell structure, such as liquid crystal and EL.

When using a device such as a plasma display that drives display cells one by one, the display cells are arranged in accordance with the manner in which the image is divided as described above. As shown in the figure, one normal pixel is A, B, C,
In the four-part divided mode D, four display cells are arranged in an array as one unit. Then, image information A, B, C, and D obtained by each image sensor is provided to the display device in parallel. That is, each knee'-7) corresponds to an image fi? The signals Aij+Bij+Cij+Dij are simultaneously driven. As a result, a two-dimensional image with increased resolution is displayed.

When one of the image information A, B, C, and D obtained by each image sensor is given to multiple CRTs each having a conventional sharp image resolution, each image will have an image with a conventional resolution. However, if the images displayed on the CRT using the respective image information are combined as shown in FIG. 3 or 4, an image with increased resolution can be obtained. This can be achieved by using a display mode rod that has a reversible relationship with the case of imaging. That is, for example, as in the examples of FIGS. 3 and 4, instead of the image sensor,
Image C displayed with each image information A, B, C, and D
If the RT is set in the same relative position as its corresponding image sensor, and the image is combined and displayed on its end face (corresponding to 71 and 72 in the figures) using an optical fiber bundle similar to those in these figures, A display image with increased resolution can be obtained. In addition,
Instead of using optical fibers, a half mirror can also be used to combine multiple CRT images into a single image.

The display device used in this embodiment that displays images with a conventional resolution is not limited to a CRT, but may be a display device with a conventional resolution that has a cell structure.

Hikago Takumi 21 In the case of a display device with a large number of resolutions that cannot be driven in units of cells, such as a CRT, one electron gun (in the case of color display, RGB
In this device, image information is once written using a memory device, and each image information is combined and processed so that it is read out from the memory device and displayed as appropriate in a scanning order that is compatible with the CRT. Alternatively, when the image information is not combined and processed, that is, when the image information remains in parallel, multiple sets of electron guns are provided for the number of parallel lines, and the electron guns are controlled through the holes of one shadow mask. By striking the phosphor screen, the phosphor screen can be excited to emit light as shown in Figure 2 (C), and by controlling the electron beams independently and in parallel in this way, the resolution of the display can be improved. The number of images can be increased.

When using a CRT with a single electron gun and a large number of resolutions, it may be possible to perform scanning on the image sensor in accordance with the scanning timing of the CRT.

In addition, in the above display example, when images separated into mosaics as shown in Figures 2 and 3 are displayed, variations in the characteristics of each image sensor are mixed together, and the display visually reduces the variations. be done.

X supervisor l second place! "4"'"ei+?:i!"01°゛"i3*ml:zv゛Cm.

Basically, each piece of image information is transmitted in parallel via IF lines or wirelessly. As described in Example 2-1.2-2, if the image information in the imaging system and display system corresponds 1:1, it is possible to directly connect the systems and drive them in parallel and simultaneously. Become. Each system is connected directly by cord or via broadcast radio waves.

Even if you transmit and receive in parallel, you can select on the display side,
One or two of the plurality of channels can be displayed.6 In the case of one, the image will have the same resolution as the conventional one. In the case of FIG. 4, an image in which one screen is divided into quarters is displayed. When images are received via broadcast waves using multiple bands, both high-resolution number display and conventional resolution number display are possible. In other words, image display can have compatibility.

Note that by transmitting in parallel in this way, even if there is a failure or failure in any channel, it can be covered by the remaining channels, improving the reliability of image reception.

If transmission cables or broadcasting radio channels cannot be installed in parallel, if the 0 display side, which combines and processes each image information and transmits it with fewer channels, is suitable for scanning, use trS2 diagram,
In the case shown in Figure 3, BCBC...BCADA
Assemble the image alarms in pixel order, such as D...AD, one or two (for example, AD...AD BC/
. . . Each group of BCs is divided and transmitted on the following channels. Since each image ti7 report is obtained at the same time, is it possible to use a memory device in parallel? T! The data are read out and synthesized in a predetermined order.

However, when performing CR7 display with a high resolution, a memory device is not required if it is performed using a scanning image sensor that matches the scanning timing of the CRT.

Generally, a composite signal obtained by combining image information is transmitted. Therefore, on the receiving side, the display on the display! ! Demodulation processing is performed to suit the user's needs. In that case, a memory device (8) is often used, as shown in FIG.

In each of the above embodiments, the image sensor is a two-dimensional solid-state image sensor, but it does not matter whether it is a CCD type or a MOS type. Moreover, instead of a solid-state light receiving element, an image pickup tube such as a vidicon may also be used.

(Effects of the Invention) According to the present invention, one image is appropriately divided and projected onto a plurality of two-dimensional light-receiving elements, and each two-dimensional light-receiving element obtains image information equivalent to the conventional resolution. High-definition two-dimensional images with an increased number of g images can be displayed.

Furthermore, since a plurality of conventional resolution image information exist in parallel at one time, both conventional resolution display and high resolution display can be selected, and compatible image display can be performed.

Furthermore, since multiple 4n images of the conventional resolution exist in parallel at 9 times, it is possible to maintain the fineness of the conventional resolution even if the display screen is enlarged. Become.

[Brief explanation of drawings]

Figure 1 is a conceptual diagram showing the outline of the present invention, Figure 2 (A), (
B) l(C) is an explanatory diagram of one embodiment of the present invention, FIG. FIG. 4 is an explanatory diagram of other embodiments. DESCRIPTION OF SYMBOLS 10... Two-dimensional solid-state image sensor as a two-dimensional light-receiving element, 20... 7 Perchia plate, 30.../)-7 mirror, 50... Image as a subject, 60.61... Light A bunch of 7 eyes. Patent applicant Dainippon Screen! l! Zozo Co., Ltd. Agent Patent Attorney Ikuji Maekawa Figure 1 Procedures Amendment Letter November 30, 1980

Claims (8)

[Claims] (1) A two-dimensional image whose pixel pitch can be reduced by projecting an object constituting one screen by appropriately dividing it onto multiple two-dimensional light-receiving elements and combining the image information obtained by each two-dimensional light-receiving element. 1. A method for increasing the number of resolutions in imaging and display, characterized by making it possible to display. (2) A patent claim in which the optical path of the light beam of the same image is branched into a plurality of paths, and the branched light beam is selectively projected onto each predetermined area within the light receiving cell by an aperture plate arranged in front of each two-dimensional light receiving element. A method for increasing the number of resolutions in imaging and display according to item (1). (3) One end of each of the optical fibers, which is an integral multiple of the resolution number of the two-dimensional light receiving element, is aligned on the image projection plane, while the other ends of the optical fibers are selectively bundled according to the manner in which the image is divided. and facing the entire light-receiving surface of each two-dimensional light-receiving element,
A method for increasing the number of resolutions in imaging and display according to claim (1), wherein partial light beams obtained by selectively dividing one image light beam in advance are projected. (4) Claims (1) to (3) in which a plurality of two-dimensional light-receiving elements are scanned at a timing corresponding to each CRT display in synchronization with the display timing of one electron gun CRT. The method for increasing the number of resolutions in imaging and display according to any one of the above. (5) A plurality of two-dimensional light-receiving elements are made to appropriately divide and project an object constituting one screen, and the image information obtained by each two-dimensional light-receiving element is transmitted to a display device having a cell structure, and the A method for increasing the number of resolutions in imaging and display, characterized by displaying a two-dimensional image with a reduced pixel pitch and an increased number of resolutions by simultaneously driving display cell groups corresponding to the manner in which a subject image is divided. (6) A plurality of two-dimensional light-receiving elements are used to appropriately divide and project an object constituting one screen, and the image information obtained by each two-dimensional light-receiving element is sent to a display device via at least one information channel. A method for increasing the number of resolutions in imaging and display, characterized in that the transmitted information is combined and processed on the display device side, and a two-dimensional image whose pixel pitch can be reduced is displayed. (7) Image signals from each two-dimensional light-receiving element are assembled pixel-by-pixel sequentially and transmitted to a display device via one or more information channels, and on the display device side, the transmitted signals are displayed or displayed by sequential scanning as they are. Claim No. 3, which displays an image through demodulation processing that matches the display mode of the device.
6) Method for increasing resolution in imaging and display as described in section 6). (8) In a CRT display, a plurality of sets of electron guns excite a fluorescent screen to emit light through a shadow mask hole, and drive and control each electron beam independently and in parallel. How to increase resolution.