JP2006033673A - Image transmission and display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image transmission and display system in which a high-definition image in an image region greater than an HDTV image region is seamlessly displayed using one transmission line for HDTV. <P>SOLUTION: An image transmission and display system includes: a copy means 31 for copying terminal images of first and fourth divided images which are adjacent to each other, as third and fourth vertical divided image blocks within a vertical blanking term in a capacitance range of image data which can be written within one vertical blanking term of a first divided image; a transmission means 4 for transmitting first to fourth divided images, first to fourth horizontal divided image blocks and first to fourth vertical divided image blocks; and a replacement means 62 for extracting image blocks of central parts which are not deteriorated, respectively from the first to fourth horizontal divided image blocks and the first to fourth vertical divided image blocks only while discontinuity occurs in the boundary of divided images when the first to fourth divided images are projected, and replacing deteriorated terminal image portions of the first to fourth divided images therewith. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention divides a single high-definition image having a number of pixels equal to or higher than that of a high-definition (hereinafter referred to as HDTV) image into a plurality of HDTV signal format images, and transmits the divided HDTV image a plurality of times one image at a time. The present invention relates to an image transmission and display system for sequentially receiving the transmitted images and storing all of the divided HDTV images, and then reading out and synthesizing the images to obtain an image equivalent to one high-definition image before division. Is.

    An image in a soccer stadium is picked up by an image pickup device having a pixel number four times that of an HDTV, and the image obtained by picking up the image is transmitted outside the stadium and is received and displayed by a large screen display device. A high-definition image transmission display system shown in Fig. 1 was tried on a trial basis.

  As described in Patent Document 1, this high-definition image transmission and display system tried experimentally transmits a plurality of HDTV images at the same time, and displays a higher-definition image than the HDTV image on the same screen. This is a composite image transmission display system.

Non-Patent Document 1 describes an example of an image transmission display system in which an image is displayed on four HDTV monitors using a high-definition camera that is about four times as high as an HDTV. This image transmission display system divides one image captured by a high-definition camera into four, converts it to an HDTV image, and displays it on four HDTV monitors.
JP 2002-290966 A News from NHK Giken (October 1996) Research spot Hiroshi Shimamoto and others

  However, in the conventional image transmission display system, in order to transmit and display a high-definition image having a pixel number equal to or larger than that of HDTV and particularly small movement, the number of screen divisions is the same between the image input device and the image display device. The number of transmission lines (cables) for HDTVs must be long and the transmission characteristics must be precisely aligned. However, it is difficult to precisely align multiple transmission paths, so if you try to combine after transmitting the divided images, the horizontal and vertical positions may be misaligned or the image quality may be degraded. There has been a problem that even if image processing to be corrected is performed, the image quality of a plurality of divided images is not uniform.

  Therefore, the present invention solves the above-described problems, and transmits divided images of high-definition images with little movement according to the arrangement order of adjacent divided images using a single transmission channel for HDTV. Another object of the present invention is to provide an image transmission display system in which clear image quality is obtained by performing image processing with the same horizontal and vertical positions and the same degradation state of image quality.

  As means for achieving the above object, the image display system according to the first aspect of the present invention transmits a divided image obtained by dividing one image vertically and horizontally into a series and projects the image on the enlarged screen as the one image. In addition, in the image transmission and display system that seamlessly borders the four divided images projected on the enlarged screen, the four divided images are divided into a first divided image and a second divided image in the clockwise direction. When the third divided image and the fourth divided image are used, the first divided images are adjacent to each other within the horizontal blanking period within the range of image data capacity that can be written in the blanking period of one horizontal period of the first divided image. The edge images of the second divided image are copied adjacent to each other as first and second horizontal divided image blocks, and blanking in one vertical period of the second divided image is performed. Within the range of image data capacity that can be written in between, the end images of the second and third divided images that are adjacent to each other within the vertical blanking period are copied as first and second vertical divided image blocks adjacent to each other, The edge images of the third and fourth divided images adjacent to each other in the horizontal blanking period are adjacent to each other within the range of image data capacity that can be written in the blanking period of one horizontal period of the fourth divided image. First and second adjacent to each other in the vertical blanking period within a range of image data capacity that can be copied as a third and fourth horizontal divided image block and written in a blanking period of one vertical period of the first divided image. Copy means for copying the end images of the four-divided image adjacent to each other as third and fourth vertical divided image blocks, and the first to fourth divisions; An image, a transmission means for transmitting the first to fourth horizontal divided image blocks and the first to fourth vertical divided image blocks, and a boundary portion of each divided image when the first to fourth divided images are projected Only when there is a discontinuity in the first to fourth horizontal divided image blocks and the first to fourth vertical divided image blocks, an undegraded central image block is taken out and the first image block is extracted. It is an object of the present invention to provide an image transmission system comprising replacement means for replacing the deteriorated end image portion of the first to fourth divided images.

  According to the image transmission display system of the present invention, a high-definition image having a number of pixels greater than that of an HDTV image with little motion is divided and transmitted according to the arrangement order of adjacent divided images using one transmission path for HDTV. By displaying the image, it is possible to obtain an image transmission display system in which clear horizontal image quality and a clear image quality are obtained.

Hereinafter, an image transmission display system according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a diagram showing an outline of an image transmission display system according to an embodiment of the present invention.
FIG. 2 is a diagram showing details of the arrangement means 3 of FIG. FIG. 3 is a diagram showing details of the storage means 6 of FIG. FIG. 4 shows the number of pixels of a high-definition image, the upper part is a diagram showing the configuration of the number of pixels of an image having a number of pixels that is a multiple of HDTV, and the lower part is a configuration in which the upper image is divided into a plurality of HDTV images FIG. FIG. 5 is a diagram illustrating an example in which the boundary image between the A image and the B image in FIG. 4 is inserted into blanking. FIG. 6 is a diagram showing an example in which images of each boundary portion when divided into a plurality of parts in FIG. 4 are extracted, copied to blanking, and each image is serially transmitted. Fig. 7 is a diagram showing the arrangement during image transmission and image display. FIG. 8 is a diagram showing details of the copy adding means of FIG. FIG. 9 is a diagram showing details of the copy replacement means of FIG. FIG. 10 is a diagram showing an operation example in FIG. FIG. 11 is a diagram showing an operation example in FIG. FIG. 12 is a diagram showing a data arrangement in the HDTV format. FIGS. 13 and 14 are diagrams showing the image arrangement order during transmission. FIG. 15 is a diagram showing an image arrangement order at the time of transmission by motion amount detection. FIG. 16 is a diagram showing a configuration in the case where a motion amount detecting means is used as the arranging means. FIG. 17 is a diagram showing a circuit configuration used for the motion amount detecting means. FIG. 18 is a diagram showing details of the array setting means of FIG. FIG. 19 is a diagram showing a case where image position information is inserted into blanking. FIG. 20 is a diagram illustrating a case where a storage unit is provided in the image input apparatus. FIG. 21 is a diagram showing a configuration for obtaining a divided image directly from the imaging means. FIG. 22 is a diagram showing a case where address information is inserted into blanking. FIG. 23 is a diagram showing a case where a divided image is obtained at an arbitrary address in FIGS. FIG. 24 is a diagram showing a boundary portion when a divided image is used at an arbitrary address.

First, an image transmission display system according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, when a divided image obtained by dividing one image vertically and horizontally into a series and projecting it as a single image on the enlarged screen, the divided image divided into four divided on the enlarged screen is projected. In the image transmission display system in which the boundary portion is seamless, when the divided images divided into four are set as the first divided image, the second divided image, the third divided image, and the fourth divided image in the clockwise direction, Within the range of image data capacity that can be written in the blanking period of one horizontal period of the divided image, the first and second end images of the first and second divided images that are adjacent to each other in the horizontal blanking period are adjacent to each other. The second divided images are copied as horizontal divided image blocks, and within the range of image data capacity that can be written in the blanking period of one vertical period, the second adjacent images are adjacent to each other in the vertical blanking period. The edge images of the third divided image are copied as first and second vertical divided image blocks adjacent to each other, and within the range of image data capacity that can be written in the blanking period of one horizontal period of the fourth divided image, The edge images of the third and fourth divided images adjacent to each other within the horizontal blanking period are copied as third and fourth horizontal divided image blocks adjacent to each other, and the blanking period of one vertical period of the first divided image Copying means 31 for copying the end images of the first and fourth divided images adjacent to each other within the vertical blanking period as the third and fourth vertical divided image blocks within the range of the image data capacity that can be written to Transmitting means 4 for transmitting the first to fourth divided images, the first to fourth horizontal divided image blocks, and the first to fourth vertical divided image blocks; When the divided images are projected, the first to fourth horizontal divided image blocks and the first to fourth vertical divided image blocks are deteriorated only when there is a discontinuity at the boundary between the divided images. And a replacement means 62 that takes out the image block at the center portion that is not present and replaces it with the deteriorated end image portion of the first to fourth divided images.

  Then, as shown in FIG. 2, in the arrangement means 3, each image signal D10 obtained by dividing the image signal D0 of one image SH shown in the upper part of FIG. 4 into four images A, B, C, D is obtained. , D11, D12, and D13 are input, and the arrangement position adding means 30 first adds the arrangement positions to the respective image signals, and then the copy image addition means 31 displays, for example, the boundary portion between the images A and B as shown in FIG. Copy to A's blanking part.

  An example of the arrangement of the copy image is shown in FIG. The upper part of FIG. 6 is an image ab indicated by hatching as a copy of the boundary portion between the images A and B, an image bd indicated by hatching as a copy of the boundary portion between the images B and D, and a diagonal line as a copy of the boundary portion between the images C and D. An image ac indicated by diagonal lines is shown as a copy of the boundary portion between the image cd and the image A and the image C.

  These copy images are copied and transmitted to the blanking portions of the divided images to be transmitted one by one as shown in the central part and the lower part of FIG. For example, image A has image ab in the horizontal blanking period, image B has image bd in the vertical blanking period, image D has image cd in the horizontal and vertical blanking period, and image C has image ac in the vertical blanking period. A copy image is alternately added and transmitted in the horizontal and vertical blanking periods in each period.

  As described above, when the adjacent divided images are transmitted one by one as shown in FIG. 7 (1), the image deteriorated portion in the boundary portion can be immediately replaced at the time of the image display in FIG. 7 (2).

  Therefore, by adding a copy of the border image adjacent to the adjacent image to the blanking portion and transmitting it, it is easy to replace the border image, and the transmission position is also close to the image quality degradation due to transmission. Therefore, since it is substantially equivalent and correction with uniform image quality can be performed, a high-quality image can be held.

  An example of the operation of the copy image adding means 31 will be described with reference to FIGS. The copy image adding means includes a 1-line memory Memory0, Memory1, Bmemory0, Bmemory1, BufferM0 and BufferM1 for storing the boundary image, switches SW0 and SW1 for selecting a read signal from the memory, and an image signal for the boundary portion during the blanking period. It consists of BLmix that copies.

When the image signal Da0 is input to the copy image adding means 31 from one image in the divided images, the image signal Da0-0 for one line is first stored in the Memory0 during the period of Line0. The image signal of the part A0 is simultaneously stored in BufferM0.
At that time, when the image signal Db0 is input from the other adjacent image to the copy image adding means 31, the image signal Db0-0 for one line is first stored in Bmemory0 during the period of Line0. The image signal of the portion B0 is simultaneously stored in Buffer M1.

  Then, during the blanking period BL0, the image signals of the boundary portions A0 and B0 stored in Buffer M0 and Buffer M1 are read out and input to BLmix, and the image at the end of the output signal Da5 that is not the boundary portion of the boundary portions A0 and B0 is input. Place the signals back to back and copy. During the next period of Line1, the stored image signals Da0-0 and Db0-0 are read out from the Memory0 and Bmemory0, respectively, and sent to the outputs Da5 and Db4.

During the period of Line1, the next image signals Da0-1 and Db0-1 are stored as Memory1 and Bmemory1. At this time, the image signals of the boundary portions A1 and B1 are also stored in BufferM0 and BufferM1, respectively. Then, the image signals of the boundary signals A1 and B1 are copied to the blanking portion of the output signal Da5 during the blanking period of BL1.
SW0 and SW1 in FIG. 7 switch the image signals read from the respective memories.

  Although the horizontal direction in which the horizontal boundary portion of the adjacent images is copied in the horizontal blanking period in this way has been described, the image in the vertical boundary portion is similarly copied in the vertical blanking period in the vertical direction.

  Next, an example of the operation of the copy image replacement means 62 will be described with reference to FIGS. The copy image adding means includes Buffer M2 and Buffer M3 for storing the image at the boundary portion, switches SW0 and SW1 for selecting a readout signal from the memory, and replacement circuits Ch0 and Ch1 for replacing the image signal at the boundary portion.

  Among the image signals obtained by copying the image signals of the boundary portion A0 and B0 of the blanking period BL0 of the image signal Da5 subjected to the image processing, the image signal of A0 is stored in Buffer M2, and the image signal of B0 is stored in Buffer M3. Next, in the period of Line 0, a circuit that replaces the image signal in the range of 1/2 of the boundary portion A0 in which the image signal in the range of 1/2 adjacent to the boundary portion of the boundary portion A0 of the image signal Da5-0 is stored in the Muffer M2. The image signal Da7 is obtained by replacing with Ch0. Similarly, in the period of Line 0, a circuit that replaces the image signal in the range of 1/2 of the boundary portion B0 that stores the image signal in the range of 1/2 adjacent to the boundary portion of the boundary portion B0 of the image signal Db4-0 in the Buffer M3. The image signal Da6 is obtained by replacing with Ch1.

  In this way, since the image signals of the boundary portions A0 and B0 copied during the blanking period are image-processed while maintaining image continuity in a back-to-back state, the image signal output from the copy image replacement means 62 Da7 and Da6 can have continuity at the boundary.

  As shown in FIG. 12, in the HDTV format, a valid data block is set in the blanking portion, so that a copy image is inserted here so that the boundary portions Y1 and Z1 of adjacent images are back to back as shown in FIG. 12 (2). To do. Then, as shown in FIG. 12D, the copy parts 1 / 2Y1, 1 / 2Z1 having no data deterioration after transmission are replaced with 1 / 2Y0, 1 / 2Z0 in which the deterioration occurs at the boundary part.

  Therefore, if the same processing is performed on the images A, B, C, and D shown in FIG. 6, continuity can be obtained at the boundary portion between all the images. One seamless image can be obtained from the image.

  As shown in FIG. 13, the transmission order of the divided images by one transmission path is as follows. First, the first image is sent while being stored in order of D10 → D11 → D13 → D12. The image of is displayed as it is. Then, the next images are sequentially displayed while being replaced. The image display order may be a clockwise and counterclockwise arrangement as shown in FIG. 14 according to the arrangement of FIG.

Next, an image transmission display system which is a modification of the embodiment of the present invention will be described with reference to FIGS.
The arrangement shown in FIG. 15 is not an arrangement in a fixed order, but the motion amount of the four divided images is detected, and the image to be transmitted is selected according to the magnitude of the motion amount. For example, in FIG. 15A, when there is one image with a large amount of movement in the shaded area and there is no movement in the other images, only this one image is transmitted, so this image becomes a moving image.
In FIG. 15B, only the image that has moved is displayed in an enlarged manner, and when there is no movement, the image is displayed with a standard image frame.

FIG. 16 shows an example in which the motion amount detection means is added to the arrangement means 3 shown in FIG.
Then, the four image signals (D10, D11, D12, D13) input to the arrangement means 3 are first assigned 4 corresponding to the positions of one image by the arrangement position adding means 30, as shown in FIG. Four image signals (D100, D101, D102, D103) added to the blanking portion as the screen position information P0, P1, P2, P3 as the positions of the divided images, and then the motion amount detecting means The motion amounts M0, M1, M2, and M3 detected by performing motion detection at 31 are added to the blanking portions different from the screen position information, respectively, and output as four image signals (D200, D201, D202, D203). To do.

  The reason why the screen position information and the amount of motion are added to the blanking portion of each image signal is to prevent the image portion of the image signal from being affected, and to effectively utilize blanking that is not used.

  As shown in FIG. 17, for example, in the image signal D100, the motion amount detecting means 31 uses two sets of frame memories 33 and 34 to calculate the difference between the absolute values Sd0 and Sd1 in the image signals between one frame and two frames. The amount of movement M0 is extracted. When performing steep motion detection, the motion amount detection circuit 39 sets the maximum value of the absolute values Sd0 and Sd1 of the difference as the motion amount M0, and when slow motion detection is sufficient, the average value of the absolute values Sd0 and Sd1 of the difference is used as the motion. The amount is M0. The motion amount M0 is added to the blanking portion of the image signal D100 by the motion amount addition circuit 40 and output as the image signal D200. Similarly, the image signals D101, D102, and D103 are output as image signals 201, D202, and D203 to which the motion amounts M1, M2, and M3 are added.

  In this way, if the screen position information and the amount of motion are added to the image signal, malfunction can be prevented even if the image signal is transmitted independently.

  In the arrangement setting unit 32 shown in FIG. 18 to which four image signals (D200, D201, D202, D203) are input from the motion amount detection unit 31, first, the motion amount extraction circuit uses the motion amounts M0, M1, M2, and so on. M3 is extracted, and then a selection signal SL0 for cyclically selecting any one of the image signals according to the respective motion amounts M0, M1, M2, and M3 and the image enlargement by the four motion amount arrangement order setting circuits. An enlarged signal W0 that is designated according to the situation is generated.

  For example, the selection signal SL0 first cyclically selects four image signals, and then preferentially selects an image signal indicating the maximum value of the motion amount. Then, image signals whose movement amount is other than the maximum value are selected cyclically at regular intervals. In this way, moving images can be displayed and a more realistic feeling can be obtained.

  When an image signal with a large amount of motion is preferentially selected in this way, the selected image almost monopolizes the transmission path and can be used as a moving image. In that case, since the other image signals are still images in a substantially stopped state, for example, it may be replaced about once every 5 minutes.

Further, the fixed arrangement order setting means 42 which sets the arrangement order of the image signals to a predetermined order selects and uses the selection signals SL1, SL2 and SL3 output from the arrangement order setting circuit which stores a plurality of arrangement orders in advance.
Therefore, the selection of the arrangement order is performed by setting the selection signal SL0 based on the amount of motion and the selection signals SL1, SL2, and SL3 based on the fixed arrangement according to the image signal by the arrangement order selection circuit 43.

  In the arrangement order selection circuit 43, one of the SW signals SW0, SW1, SW2, and SW3 is turned on from the selected selection signal, and the others are turned off and sent to the image signal selection means 44. The image signal selection means 44 selects an image signal by four switches corresponding to the four image signals D200, D201, D202, D203. The selected image signal is output as an image signal D2 for transmission. At this time, any one of the screen position information P1 to P3 added to the image signal is extracted and output as the screen position information AI0.

  In this way, the case where the image signal is desired to be selected according to the amount of motion and the case where the image signal is desired to be sequentially selected in a predetermined order are set.

  Next, the image signal D2 and the screen position information AI0 are sent from the image signal selection means 44 of the arrangement means 3 to the transmission means 4. In the transmission means 4, in the HD-SDI signal shown in FIG. 19, there is a video data block defined by the ARIB standard BTA S-005B and an effective data block as an auxiliary data area in the blanking period. The image signal D2 is inserted into the video data block of the SDI signal, and the screen position information AI0 is inserted into the valid data block to form the transmission signal D3.

Then, the transmission signal D3 input to the receiving means 5 of the image display apparatus 102 via the transmission path 101 is demodulated to obtain an image signal D4, which is output to the storage means 6 and inserted into the effective data block. The screen position information AI0 thus read is sent to the storage means 6 as screen position information AI1.
The storage means 6 has storage areas (MA, MB, MC, MD) corresponding to the screen positions of the four image signals (D10, D11, D12, D13) shown in FIG. D4 is stored in one of the storage areas (MA, MB, MC, MD) of the storage means 6 in accordance with the screen position information AI1.

  The storage area (MA, MB, MC, MD) of the storage means 6 has a storage capacity corresponding to four image signals, and each memory group (MA → MA1, MA2), (MB → MB1, MB2), (MC → MC1, MC2), (MD → MD1, MD2), and while writing to one memory group of one frame, by reading the memory group of the other one frame, continuous writing and reading can be performed. Do. The storage means 6 is configured to switch the read / write of the input image signal D4 in the memory group designated by the screen position information AI1. The display means 7 composites and displays the four image signals (D50, D51, D52, D53) read from the storage means 6 on the display screen so as to have the same arrangement as the first image signal D0.

  In this way, a high-definition image having an image area larger than the HDTV image area can be displayed with a sense of reality by transmitting one HDTV image.

Then, when the dividing unit 2 is provided with the storage unit 2 ′ for control as shown in FIG. 20 and when the imaging unit 1 is directly controlled as shown in FIG. An address Ad0 is generated and an image at an arbitrary position is transmitted. The address information is inserted into the valid data block in the blanking part as shown in FIG.
That is, in FIG. 22, one image is stored in the storage means 2 ', and each divided image is read out according to the address sent from the control means and is divided into one image divided by the array means, and the address is inserted by the transmission means. It is transmitted later. The image display device 102 displays an image sent based on the inserted address.
As for FIG. 23, the image Addr's address Add0 is directly designated and the captured image is sent to the transmission unit, and the transmission unit inserts the address and transmits it. The image display device 102 displays an image sent based on the inserted address.

  Therefore, if an address is arbitrarily designated, as shown in FIG. 23 (1), first, four divided images are transmitted and stored and displayed, and then, as shown in FIGS. 23 (2) and (3), an arbitrary address is designated. Images can be transmitted. If the continuity of the boundary portion of an arbitrary XY image shown in FIG. 24 is maintained even after image processing, images of the inner boundary portion and the peripheral boundary portion are inserted into blanking as shown in FIG.

  In this way, an image at an arbitrary address can be exchanged while displaying one high-definition image.

  As described above, according to the image transmission display system of the present invention, a high-definition image having a number of pixels greater than that of an HDTV image with little motion can be divided and transmitted using a single transmission line. Therefore, the image quality will not be improved even if the image processing is performed to correct the horizontal or vertical position due to the shift of the transmission path when the multiple transmission paths are used, or the deterioration state of the image quality is different. The problem of not being aligned does not occur, and a high-definition image having a uniform image quality in the horizontal and vertical positions can be obtained.

It is a figure which shows the outline | summary of the image transmission display system which concerns on embodiment of this invention. It is a figure which shows the detail of the arrangement | sequence means 3 of FIG. It is a figure which shows the detail of the memory | storage means 6 of FIG. The number of pixels of a high-definition image is shown, the upper part is a diagram showing the configuration of the number of pixels of an image having a number of pixels that is a multiple of HDTV, and the lower part is a diagram showing a configuration in which the upper image is divided into a plurality of HDTV images It is. It is a figure which shows the example which inserts the boundary image of A image and B image of FIG. 4 in blanking. FIG. 5 is a diagram illustrating an example in which images of each boundary portion when divided into a plurality of parts in FIG. 4 are extracted and copied to blanking, and the respective images are serially transmitted. It is a figure which shows the arrangement | sequence at the time of image transmission and image display. It is a figure which shows the detail of the copy addition means of FIG. It is a figure which shows the detail of the copy replacement means of FIG. It is a figure which shows the operation example in FIG. It is a figure which shows the operation example in FIG. It is a figure which shows the data arrangement | positioning in a HDTV format. It is a figure which shows the image arrangement | sequence order at the time of transmission. It is a figure which shows the image arrangement | sequence order at the time of transmission. It is a figure which shows the image arrangement | sequence order at the time of transmission by motion amount detection. These are figures which show a structure in case a motion amount detection means is used for an arrangement | sequence means. These are figures which show the circuit structure used for a motion amount detection means. It is a figure which shows the detail of the arrangement | sequence setting means of FIG. It is a figure which shows the case where image position information is inserted in blanking. It is a figure which shows the case where a memory | storage means is provided in the image input device. It is a figure which shows the structure for obtaining a division image directly from an imaging means. It is a figure which shows the case where address information is inserted in blanking. FIG. 22 is a diagram illustrating a case where a divided image is obtained at an arbitrary address in FIGS. 20 and 21. It is a figure which shows the boundary part in the case of using a divided image by arbitrary addresses. It is a figure which shows the conventional image transmission system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Imaging means, 2 ... Dividing means, 2 '... Storage means, 3 ... Arrangement means, 4 ... Transmission means, 5 ... Reception means, 6 ... Storage means, 7 ... display means, 8 ... control means, 30 ... arrangement position addition means, 31 ... copy image addition means, 31-1 ... motion amount detection means, 32 ... array setting means 33 ... Frame memory, 34 ... Frame memory, 35 ... Subtractor, 36 ... Subtractor, 37 ... Absolute value circuit, 38 ... Absolute value circuit, 39 ... Motion Detection circuit, 40... Motion amount adding circuit, 41... Arrangement order variation designating section, 42... Arrangement fixing designating section, 43. ... Image arrangement order arranging means, 61 ... Image storage / image processing means, 62 ... Copy image replacing means, 1 0 ... image input device, 101 ... transmission line, 102 ... image display device, 103 ... transmission line, 104 ... image display device

Claims (1)

When transmitting an image divided into four vertically and horizontally to the series and projecting it as the one image on the enlargement screen, the boundary portion of the four divided images projected on the enlargement screen is seamlessly displayed. In the image transmission display system to
When the four divided images are set as a first divided image, a second divided image, a third divided image, and a fourth divided image in the clockwise direction,
The end images of the first and second divided images that are adjacent to each other within the horizontal blanking period are adjacent to each other within the range of the image data capacity that can be written in the blanking period of one horizontal period of the first divided image. The first and second horizontal divided image blocks are copied as second and second adjacent images within the vertical blanking period within the range of image data capacity that can be written in the blanking period of one vertical period of the second divided image. The end images of the three divided images are copied as first and second vertical divided image blocks adjacent to each other, and the horizontal image data can be written in the blanking period of one horizontal period of the fourth divided image within the horizontal range. The end images of the third and fourth divided images that are adjacent to each other within the blanking period are adjacent to each other to form third and fourth horizontal divided image blocks, respectively. The end images of the first and fourth divided images that are adjacent to each other within the vertical blanking period are within the range of image data capacity that can be written in the blanking period of one vertical period of the first divided image, respectively. A copy means for copying as adjacent third and fourth vertically divided image blocks;
Transmission means for transmitting the first to fourth divided images, the first to fourth horizontal divided image blocks, and the first to fourth vertical divided image blocks;
When the first to fourth divided images are projected, the first to fourth horizontal divided image blocks and the first to fourth vertical divisions are provided only when discontinuity occurs at the boundary between the divided images. A replacement means for taking out an undegraded central image block from the image blocks and replacing them with degraded end image portions of the first to fourth divided images;
An image transmission system comprising:

Images