JP2012159716A - Multi-display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-display system capable of displaying an image which includes characters, in a manner that looks natural.SOLUTION: A CPU 7 sets an image generated by deleting a side edge part from a block image of one display as the image to display on a screen of the one display, if no character is included in the side edge part which is an edge part adjacent to another display and has a prescribed width, included in the block image of the one display. A graphic controller 11 comprises a display control part enlarging the set image to display it over the whole screen of each display and displaying the enlarged image on the screen of each display.

Description

  The present invention relates to a multi-display system, and more particularly to a multi-display system that displays an image including characters.

  When one image is desired to be displayed on a large screen, an image display device having a large size is usually used. However, there is a limit in manufacturing a large image display device, and transportation becomes difficult. In addition, as a means for displaying a large image, there is a projector system, but it is necessary to install the projector on the front surface or the back surface, and there are cases where the projector cannot be used if there is a restriction on the installation. In addition, when used in a bright place, the screen is dark and difficult to see.

  Further, as an effective means for displaying an image, there is a multi-display method using a plurality of image display devices. The multi-display method is a method in which one image is divided and displayed on a plurality of displays (see, for example, Japanese Patent Application Laid-Open No. 2009-42356).

  Generally, a display device has a housing (frame frame) for holding a screen. When a single image is displayed using a plurality of displays, a gap is formed by the frame frame, so that the display is as shown in FIG. 31, resulting in an unnatural image.

  Therefore, as shown in FIG. 32, a natural image can be obtained by correcting the image data by the width of the frame (trimming the image and enlarging the trimmed image that has become smaller) and displaying the image. Can show.

JP 2009-42356 A

  However, when characters are included in the display image, if the image data is corrected as described above, the characters may not be discriminated, which causes a problem.

  For example, when an image including characters as shown in FIG. 33 is divided into a plurality of displays and image data is corrected, character information is lost as shown in FIG.

  Therefore, there are cases where it is better not to correct an image that includes characters. When image data is frequently switched, it is necessary for an operator to switch correction on and off while viewing the image, which is troublesome. In addition, it is necessary to select whether or not to correct even when a moving image includes characters such as a telop.

  SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a multi-display system that can naturally display an image including characters on a multi-display.

  In order to solve the above problems, the present invention provides a multi-display system that displays an original image divided into a plurality of display screens, and the size of the original image is equal to the sum of the sizes of the screens of the plurality of displays. When the original image is divided according to the screen size of each display, and when the image assigned to each display is the block image of each display, the other display included in the block image of one display When there is no character at the edge of the adjacent edge that has a predetermined width, an image with the edge removed from the block image of one display is displayed on the screen of one display The image display processing unit to set as an image to be set and the set image to the entire screen of each display Enlarged as shown, it comprises an enlarged image and a display control unit for displaying on the screen of each display.

  Preferably, the display control unit displays the block image of one display on the screen of one display when characters are included in the edge portion included in the block image of one display.

  Preferably, the predetermined width is a width of a housing of one display adjacent to another display.

  The present invention is a multi-display system that displays an original image by dividing it into a plurality of display screens, and the size of the original image is equal to the sum of the sizes of the plurality of display screens, and the original image is displayed on each display screen. When the image assigned to each display is a block image of each display when divided by a dividing line corresponding to the size of each pixel, the pixels constituting one character are adjacent to the block image of one display. If it is included in both of the block images of the display, the original image is divided by shifting the dividing line so that characters are included in either one display or the other display, and the screen is displayed on each display. An image display processing unit for setting the image to be displayed and the set image on each display It scales to appear in the entire screen, and a display control unit for the enlarged or reduced image is displayed on the screen of each display.

  Preferably, the image display processing unit compares a shift amount when shifting the division line so that the character is included in one display and a shift amount when shifting the division line so that the character is included in another display. Shift the dividing line to the one with the smaller shift amount.

  The present invention is a multi-display system that displays an original image composed of an image layer and a text layer divided into a plurality of display screens, the size of the original image being equal to the sum of the screen sizes of the plurality of displays, When the original image is divided by the dividing line corresponding to the screen size of each display, when the image assigned to each display is the block image of each display, the pixel constituting the text layer is one display block When included in both the image and the block image of another adjacent display, the first text layer displayed on the screen of one display by dividing the text layer by the dividing line, and the other The second text displayed on the display screen An image display processing unit that divides into ears is provided, and the image display processing unit further moves the position of the first text layer so that the first text layer is not included in the edge portion of the block image of one display. At the same time, the position of the second text layer is moved so that the second text layer is not included in the edge of the block image of another display, and the edge of the block image of one display is The edge part adjacent to the other display, which is included in the block image, is a part having the first predetermined width, and the edge part of the block image of the other display is the block image of the other display The image display processing unit is an end portion adjacent to one display and having a second predetermined width. An image in which the edge portion is deleted from the display image is set as an image to be displayed on the screen of one display, and an image in which the edge portion is deleted from the block image of another display is displayed on the screen of the one display. A display control unit configured to enlarge the set image to be displayed on the entire screen of each display and display the enlarged image on the screen of each display.

  The present invention is a multi-display system that displays an original image composed of an image layer and a text layer divided into a plurality of display screens, the size of the original image being equal to the sum of the screen sizes of the plurality of displays, When the original image is divided by the dividing line corresponding to the screen size of each display, when the image assigned to each display is the block image of each display, the pixel constituting the text layer is one display block When included in both the image and a block image of another adjacent display, the text layer is a first text layer displayed on the screen of one display with a line in which characters included in the text layer are not divided. Displayed on the other display screen. An image display processing unit that divides the image into a second text layer, and the image display processing unit further includes the first text layer so that the first text layer is not included in the edge of the block image of one display. The position of the second text layer is moved so that the second text layer is not included in the edge of the block image of another display, and the edge of the block image of one display is moved. Is a part of an edge adjacent to another display that is included in the block image of one display and has a first predetermined width, and the edge of the block image of the other display is the other part Is a part of the edge adjacent to one display, which is included in the block image of the display, and has a second predetermined width. An image in which the edge is deleted from the block image of the display is set as an image to be displayed on the screen of one display, and an image in which the edge is deleted from the block image of another display is displayed on the screen of the one display. A display control unit configured to enlarge the set image to be displayed on the entire screen of each display, and to display the enlarged image on the screen of each display.

  Preferably, the first predetermined width is a width of a casing of one display adjacent to the other display, and a second predetermined width is a casing of the other display adjacent to the one display. Width.

  According to the present invention, an image including characters can be naturally displayed on a multi-display.

It is a block diagram of a multi-display system. It is a figure showing the structure of a computer. It is a figure showing the structure of a display. It is a figure showing an original image. It is a figure showing the magnitude | size and arrangement | positioning of a multi display. It is a flowchart showing the display processing procedure of 1st Embodiment. It is a figure showing the example of arrangement | positioning of the character contained in an original image. It is a flowchart showing the procedure of the character recognition process of step S101 of FIG. It is a flowchart showing the procedure of the process displayed without correction | amendment of step S107 of FIG. It is a flowchart showing the procedure of the process corrected and displayed by the correction type 1 of step S106 of FIG. (A) is a figure showing the example of an original image. (B) is a figure showing the example of the image displayed on a multi-display by the correction | amendment by a conventional system. (C) is a figure showing the example of the image displayed on a multi-display in the 1st Embodiment of this invention. It is a flowchart showing the display processing procedure of 2nd Embodiment. It is a figure for demonstrating arrangement | positioning of a character when a character exists across the centerline X2. It is a figure for demonstrating arrangement | positioning of a character when a character exists across the centerline Y2. (A) is a figure for demonstrating a new division line when (DELTA) XL is smaller than (DELTA) XR. (B) is a figure for demonstrating a new division line when (DELTA) XL is more than (DELTA) XR. (A) is a figure for demonstrating a new division line when (DELTA) YU is smaller than (DELTA) YB. (B) is a figure for demonstrating a new division line when (DELTA) YU is more than (DELTA) YB. It is a figure showing division of the original picture by correction type 2. It is a flowchart showing the calculation process procedure of shift amount AX. It is a flowchart showing the procedure of calculation processing of shift amount AY. It is a flowchart showing the procedure of the process corrected and displayed by the correction type 2 of step S510 of FIG. It is a figure showing the example of an original image. (B) is a figure showing the example of the image displayed on a multi-display in the 2nd Embodiment of this invention. It is a figure showing the example in which an original image is comprised by a some layer. It is a figure which shows the example in which data are stored for every layer. It is a flowchart showing the display processing procedure of 3rd Embodiment. It is a figure showing the example of arrangement | positioning of a text layer. It is a figure showing the example of a division | segmentation of the text layer of 3rd Embodiment. (A) is a figure showing the example of the screen displayed without correction | amendment. (B) is a figure showing the example of the displayed screen correct | amended by the correction type 1. FIG. (C) is a figure showing the example of the screen displayed by the system by 3rd Embodiment. It is a flowchart showing the display processing procedure of 4th Embodiment. It is a figure showing the example of a division | segmentation of the text layer of 4th Embodiment. It is a figure showing the example of the screen displayed by the system by 4th Embodiment. It is a figure showing the example which displays an original image on a multi-display without correction | amendment. It is a figure showing the example which correct | amends an original image and displays on a multi-display. It is a figure for demonstrating the example in which a character is contained in an original image. It is a figure showing the example which corrects the original image of FIG. 33, and displays it on a multi-display.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
(Multi display system)
FIG. 1 is a configuration diagram of a multi-display system.

  Referring to FIG. 1, the multi-display system includes a computer 94 and a plurality of displays 1 to 4. Each display is connected to the video output terminal 5 of the computer 94 by a video transmission cable 6.

  In FIG. 1, the displays 1 to 4 are illustrated separately, but are installed adjacent to each other during actual use.

(Computer)
FIG. 2 is a diagram illustrating the configuration of a computer.

  Referring to FIG. 2, this computer 94 includes a CPU (Central Processing Unit) 7, a graphic controller 11, a VRAM (Video RAM) 12, an auxiliary storage device 8, a RAM (Random Access Memory) 9, and a ROM. (Read Only Memory) 10, a video signal driver 13, and a video output terminal 5 are provided.

  The ROM 10 stores programs (IPL (Initial Program Loader) and BIOS (BASIC INPUT OUTPUT SYSTEM) for starting the computer 94.

  The RAM 9 temporarily stores work data for executing the program and image data obtained from the camera.

  The auxiliary storage device 8 includes a magnetic recording device, a semiconductor recording device, an optical recording device, or the like. The auxiliary storage device 8 stores a program, image data, and moving image data. As the program, character recognition data, a character recognition program, an image display processing program, and the like described in the embodiment of the present invention are stored.

  The CPU 7 executes a program stored in the ROM 10 and activates the computer 94 system. The CPU 7 transfers the program stored in the auxiliary storage device 8 to the RAM 9 and executes processing of the program temporarily stored in the RAM 9. The CPU 7 performs various processes on the data stored in the auxiliary storage device 8 according to a program. The CPU 7 performs various processes such as sending a command to instruct the display to be displayed to the graphic controller 11 and transferring data to be displayed. The CPU 7 functions as a character recognition unit 81 by executing a character recognition program stored in the auxiliary storage device 8. The CPU 7 functions as the image display processing unit 82 by executing the image display processing program stored in the auxiliary storage device 8.

  The graphic controller 11 receives data to be displayed on each display from the VRAM 12 and transmits a video signal to the driver 13. The graphic controller 11 receives the image data transmitted from the CPU 7 and updates the data in the VRAM 12. The graphic controller 11 continues to repeatedly transmit the data in the VRAM 12 to the video signal driver 13 when there is no update of the image data from the CPU 7.

  Further, the graphic controller 11 can perform a part or most of the processing performed by the CPU 7 regarding processing relating to images. The graphic controller 11 synthesizes each image data according to enlargement / reduction of window data designated from the CPU 7 side, display / non-display, display priority order, and the like, and finally outputs them as display data.

  The VRAM 12 stores image data for outputting a video signal. The VRAM 12 has a size capable of storing image data to be displayed on the four displays 1 to 4. The VRAM 12 is connected to the graphic controller 11.

  The video signal driver 13 converts the video signal (device internal signal) output from the graphic controller 11 and outputs it to the video output terminal 5.

  The video output terminal 5 is a terminal for connecting the displays 1 to 4 with the video transmission cable 6. In the description of the present embodiment, the displays 1 to 4 and the computer 94 are connected by wire, but may be connected wirelessly.

The input device 93 includes a keyboard or a mouse.
(display)
FIG. 3 is a diagram illustrating the configuration of the display 1. The other displays 2 to 4 have the same configuration as the display 1.

  Referring to FIG. 3, this display 1 is a dot matrix type display, which is an LCD (Liquid Crystal Display) 19, a video input terminal 15, a video signal receiver 16, an LCD controller 17, and a segment driver. 18 and a common driver 20.

  Reference numeral 10 denotes a display device that uses a liquid crystal composition for display. The LCD 19 of the present embodiment is a dot matrix LCD.

  The video input terminal 15 is a terminal for connecting to the computer 94 with the video transmission cable 6.

  The video signal receiver 16 converts the video signal output from the video signal driver 13 into a signal that can be received by the LCD controller 17 and outputs the signal.

  The LCD controller 17 converts the signal output from the video signal receiver 16 into a signal for display on the LCD 19 and outputs the signal to the segment driver 18 and the common driver 20.

  The segment driver 18 and the common driver 20 convert the signal output from the LCD controller 17 into a signal for display on the LCD 19 and output the signal to the LCD 19.

(Description of original image and multi-display size)
FIG. 4 is a diagram showing an original image. FIG. 5 is a diagram showing the size and arrangement of the multi-display.

Referring to FIGS. 4 and 5, the horizontal width of the original image is 2 × WX and the height is 2 × WY.
The screens of the displays constituting the multi-display have the same screen size, and all of them are WX × WY. Accordingly, the size of the original image is equal to the sum of the screen sizes of the four displays. Further, the width of the casing of each display is WD.

  When the original image is divided according to the screen size of each display, the image assigned to the display 1 is the block image BL (1) of the display 1, and the image assigned to the display 2 is the block image BL ( 2), an image assigned to the display 3 is a block image BL (3) of the display 3, and an image assigned to the display 4 is a block image BL (4) of the display 4.

  The upper left coordinates of the block image BL (1) are (X1, Y1), and the lower right coordinates are (X2, Y2). However, X2 = X1 + WX and Y2 = Y1 + WY. The upper left coordinates of the block image BL (2) are (X2, Y1), and the lower right coordinates are (X2 + WX, Y2). The upper left coordinates of the block image BL (3) are (X1, Y2), and the lower right coordinates are (X2, Y2 + WY). The upper left coordinates of the block image BL (4) are (X2, Y2), and the lower right coordinates are (X2 + WX, Y2 + WY).

  In the following description, the range of (XA, YA)-(XB, YB) of an image refers to an image whose upper left coordinates are (XA, YA) and lower right coordinates are (XB, YB). This is the part area.

(Display processing operation)
FIG. 6 is a flowchart showing the display processing procedure of the first embodiment.

First, the character recognition unit 81 performs a character recognition process on the original image (step S101).
Next, the character recognition unit 81 reads the data recorded in the RAM 9 by the character recognition process of the original image (step S102).

  Next, the image display processing unit 82 refers to the data read in step S102, and corrects the original image with the correction type 1 when the original image does not include characters (NO in step S103). Are displayed (step S106).

  On the other hand, if the original image contains characters (YES in step S103), the image display processing unit 82 refers to the coordinates and size of the characters recorded in the RAM 9 and determines the center of the original image in the Y direction. It is checked whether or not a character is included in the width of WD × 2. In other words, the image display processing unit 82 includes characters from the right edge of the block image BL (1) to the edge of the width WD and the characters from the left edge of the block image BL (2) to the edge of the width WD. Is included, or a character is included from the right end of the block image BL (3) to the edge of the width WD, and a character is included from the left end of the block image BL (4) to the edge of the width WD. Find out if.

  As shown in FIG. 7A, when a character is included in the width of the center WD × 2 in the Y direction (YES in Step S104), the image display processing unit 82 displays an image without correction (Step S104). S107).

  If no character is included in the width of the center WD × 2 in the Y direction (NO in step S104), the image display processing unit 82 further refers to the coordinates and size of the character recorded in the RAM 9 and reads the image. It is checked whether a character is included in the width of the center WD × 2 in the X direction. That is, the image display processing unit 82 includes characters from the lower end of the block image BL (1) to the edge of the width WD, and from the upper end of the block image BL (3) to the edge of the width WD. Is included, or a character is included at the edge of the width WD from the lower end of the block image BL (2), and a character is included at the edge of the width WD from the upper end of the block image BL (4). Find out if.

  As shown in FIG. 7B, when a character is included in the width of the center WD × 2 in the X direction (YES in Step S105), the image display processing unit 82 displays an image without correction (Step S105). S107).

  If no character is included in the width of the center WD × 2 in the Y direction and the width of the center WD × 2 in the X direction (NO in step S104, NO in step S105), the image display processing unit 82 uses the correction type 1 The image is corrected and displayed (step S106).

  If there is a change in the original image (YES in step S108), the character recognition unit 81 returns to step S101 and repeats the process.

(Character recognition operation)
FIG. 8 is a flowchart showing the procedure of the character recognition process in step S101 of FIG.

  Referring to FIG. 8, first, the character recognition unit 81 reads a character recognition program from the auxiliary storage device 8, transfers it to the RAM 9, and executes the character recognition program (step S201).

Next, the character recognition unit 81 extracts characters from the original image (step S202).
Next, the character recognition unit 81 compares the extracted character data with the data of the character recognition dictionary recorded in the auxiliary storage device 8.

  If a pattern that matches the extracted character data is registered in the character recognition dictionary (YES in step S204), the character recognition unit 81 determines the size and coordinates of all characters that match the character recognition dictionary pattern. Extracted and recorded in the RAM 9 (step S205).

  On the other hand, if the pattern that matches the extracted character data is not registered in the character recognition dictionary (NO in step S204), the character recognition unit 81 determines that no characters are included in the original image. Information indicating that no character is included in the RAM 9 is recorded (step S206).

(Display operation without correction)
FIG. 9 is a flowchart showing a procedure of processing for displaying without correction in step S107 of FIG.

  Referring to FIG. 9, image display processing unit 82 writes original image data into VRAM 12 (step S301).

  The image display processing unit 82 sets a block image BL (1) that is an area (X1, Y1)-(X2, Y2) of the original image stored in the VRAM 12 as an image to be displayed on the display 1.

  Further, the image display processing unit 82 sets the block image BL (2) that is in the range of (X2, Y1)-(X2, Y2) of the original image stored in the VRAM 12 as an image to be displayed on the display 2.

  Further, the image display processing unit 82 sets the block image BL (3) that is in the range of (X1, Y2)-(X2, Y2) of the original image stored in the VRAM 12 as an image to be displayed on the display 3.

  Further, the image display processing unit 82 sets the block image BL (4) that is in the range of (X2, Y2)-(X2, Y2) of the original image stored in the VRAM 12 as an image to be displayed on the display 4 (step S1). S102).

  The image display processing unit 82 instructs the graphic controller 11 to display the set image on the display i (i = 1 to 4). The graphic controller 11 displays the image to be displayed on the display i as it is without being enlarged or reduced (step S103).

(Operation to display with correction type 1)
FIG. 10 is a flowchart showing the procedure of the process of correcting and displaying with correction type 1 in step S106 of FIG.

  Referring to FIG. 10, image display processing unit 82 writes original image data into VRAM 12 (step S401).

  The image display processing unit 82 sets the (X1, Y1)-(X2-WD, Y2-WD) region of the original image stored in the VRAM 12 as an image to be displayed on the display 1. That is, the image display processing unit 82 deletes the WD width edge from the right edge adjacent to the display 2 and the WD width edge from the lower edge adjacent to the display 3 from the block image BL (1). The image is set to an image to be displayed on the display 1.

  Further, the image display processing unit 82 sets the (X2 + WD, Y1) − (X2 + WX, Y2−WD) area of the original image stored in the VRAM 12 as an image to be displayed on the display 2. That is, the image display processing unit 82 deletes the WD-wide edge from the left end adjacent to the display 1 and the WD-wide edge from the lower end adjacent to the display 4 from the block image BL (2). The image is set to an image to be displayed on the display 2.

  The image display processing unit 82 sets the (X1, Y2 + WD) − (X2−WD, Y2 + WY) region of the original image stored in the VRAM 12 as an image to be displayed on the display 3. That is, the image display processing unit 82 deletes the WD width edge from the right edge adjacent to the display 4 and the WD width edge from the upper edge adjacent to the display 1 from the block image BL (3). The image is set to an image to be displayed on the display 3.

  Further, the image display processing unit 82 sets an area (X2 + WD, Y2 + WD) − (X2 + WX, Y2 + WY) of the original image stored in the VRAM 12 as an image to be displayed on the display 4. That is, the image display processing unit 82 deletes the edge portion having a width of WD from the left end adjacent to the display 3 and the edge portion having a width of WD from the upper end adjacent to the display 2 from the block image BL (4). The image is set as an image to be displayed on the display 4 (step S402).

  The image display processing unit 82 instructs the graphic controller 11 to display the set image on the display i (i = 1 to 4). The graphic controller 11 enlarges the image to be displayed on the display i by WX / (WX-WD) times in the X direction and WY / (WY-WD) times in the Y direction so as to be displayed on the entire screen of the display i. Is enlarged and displayed (step S403).

(Display example)
FIG. 11A is a diagram illustrating an example of an original image.

  FIG. 11B is a diagram illustrating an example of an image displayed on the multi-display by the correction according to the conventional method.

  In the conventional method, correction is performed using the correction type 1 regardless of the presence or absence of characters, and therefore characters cannot be identified.

  FIG. 11C is a diagram illustrating an example of an image displayed on the multi-display in the first embodiment of the present invention.

  In the first embodiment of the present invention, when a character is included in the center of the original image, it is displayed without correction, so that the character can be identified.

[Second Embodiment]
In the first embodiment, when a character is included in the center of the original image, the character image is not corrected and thus cannot be read. However, since one character is displayed across a plurality of displays, it is difficult to read. . In the second embodiment, this problem is solved.

(Display processing operation)
FIG. 12 is a flowchart illustrating a display processing procedure according to the second embodiment.

First, the character recognition unit 81 performs a character recognition process of the original image (step S501).
Next, the character recognition unit 81 reads the data recorded in the RAM 9 by the character recognition process of the original image (step S502).

  Next, the image display processing unit 82 refers to the data read in step S502, and corrects the image with the correction type 1 when the image does not include characters (NO in step S503). It is displayed (step S504).

  On the other hand, if the original image contains characters (YES in step S503), the image display processing unit 82 refers to the coordinates and size of the characters recorded in the RAM 9 and performs the center in the Y direction of the original image. It is checked whether a character exists across the line Y2. That is, the image display processing unit 82 includes pixels constituting one character in both the block image BL (1) and the block image BL (3), or the block image BL (2) and the block image BL (4 ) To see if both are included.

  When a character exists across the center line Y2 in the Y direction of the original image (YES in step S505), the image display processing unit 82 calculates a shift amount AY (step S511). Further, the image display processing unit 82, when a character exists across the center line X2 in the X direction of the original image, that is, the pixels constituting one character are the block image BL (1) and the block image BL (2). Are included in both the block image BL (3) and the block image BL (4) (YES in step S512), the shift amount AX is calculated (step S514). If there is no character across the center line X2 in the X direction (NO in step S512), the shift amount AX is set to 0 (step S513).

  On the other hand, if there is no character across the center line Y2 in the Y direction of the original image (NO in step S505), the image display processing unit 82 sets the shift amount AY to 0 (step S506). Furthermore, when a character exists across the center line X2 in the X direction of the original image (YES in step S507), the image display processing unit 82 calculates the shift amount AX (step S509), and the X of the original image If there is no character across the direction center line X2 (NO in step S507), the shift amount AX is set to 0 (step S508).

  When the shift amount AX = 0 and the shift amount AY = 0 are set (NO in step S505 and NO in step S507), the image display processing unit 82 corrects and displays the image using the correction type 1 (step S504). ).

  If the shift amount AX = 0 and the shift amount AY = 0 are not set (YES in step S505 or YE2 in step S507), the image display processing unit 82 corrects and displays the image using the correction type 2 (step S505). S510).

  If there is a change in the original image (YES in step S515), the character recognition unit 81 returns to step S501 and repeats the process.

(Description of correction type 2 correction)
FIG. 13 is a diagram for explaining the arrangement of characters when characters exist across the center line X2.

  Let CD be the width of the character area. Let ΔXL be the length from the center line X2 to the left end of the character area. Let ΔXR be the length from the center line X2 to the right end of the character area.

  FIG. 14 is a diagram for explaining the arrangement of characters when characters exist across the center line Y2.

  Let CD be the height of the character area. Let ΔYU be the length from the center line Y2 to the upper end of the character area. Let ΔYU be the length from the center line Y2 to the lower end of the character area.

  FIG. 15A is a diagram for explaining a new division line when ΔXL is smaller than ΔXR. As shown in FIG. 15A, when ΔXL is smaller than ΔXR, the shift amount AX = −ΔXL so that the absolute value of the shift amount is small (that is, the shift amount of the divided lines is reduced). The dividing line moves from X2 to X2 + AX. As a result, the characters in the character area are displayed on the display 1 and / or the display 3.

  FIG. 15B is a diagram for explaining a new division line when ΔXL is equal to or greater than ΔXR. As shown in FIG. 15B, when ΔXL is greater than or equal to ΔXR, the shift amount AY = ΔXR is set so that the absolute value of the shift amount is small, and the dividing line moves from X2 to X2 + AX. As a result, the characters in the character area are displayed on the display 2 and / or the display 4.

  FIG. 16A is a diagram for explaining a new division line when ΔYU is smaller than ΔYB. As shown in FIG. 16A, when ΔYU is smaller than ΔYB, the shift amount AY = −ΔYU and the dividing line moves from Y2 to Y2 + AY so that the absolute value of the shift amount becomes smaller. As a result, the characters in the character area are displayed on the display 1 and / or the display 2.

  FIG. 16B is a diagram for explaining a new division line when ΔYU is equal to or greater than ΔYB. As shown in FIG. 16B, when ΔYU is equal to or larger than ΔYB, the shift amount AY = ΔYB is set so that the absolute value of the shift amount is small, and the dividing line moves from Y2 to Y2 + AY. As a result, the characters in the character area are displayed on the display 3 and / or the display 4.

FIG. 17 is a diagram illustrating division of the original image with the correction type 2.
FIG. 17 shows the division when the shift amount AX and the shift amount AY are negative values. That is, (X1, Y1) − (X2 + AX, Y2 + AY) of the original image is displayed on the display 1. An area of (X2 + AX, Y1) − (X2 + WX, Y2 + AY) of the original image is displayed on the display 2. An area of (X1, Y2 + AY) − (X2 + AX, Y2 + WY) of the original image is displayed on the display 3. An area of (X2 + AX, Y2 + AY) − (X2 + WX, Y2 + WY) of the original image is displayed on the display 4.

(Calculation operation of shift amount AX)
FIG. 18 is a flowchart showing the procedure for calculating the shift amount AX.

First, the image display processing unit 82 determines the line width CD of the character area (step S801).
Next, the image display processing unit 82 specifies the length ΔYU above the center line Y2 (step S802).

  Next, the image display processing unit 82 specifies a length ΔYB below the center line Y2 (step S803).

  If the value of ΔYU is equal to or larger than the value of ΔYB (YES in step S804), the image display processing unit 82 sets the value of the shift amount AY to the value of ΔYB (step S805).

  On the other hand, when the value of ΔYU is less than the value of ΔYB (NO in step S804), the value of the shift amount AY is set to the value of −ΔYU (step S806).

(Calculation operation of shift amount AY)
FIG. 19 is a flowchart showing the procedure for calculating the shift amount AY.

First, the image display processing unit 82 determines the line width CD of the character area (step S601).
Next, the image display processing unit 82 specifies the length ΔXL on the left side of the center line X2 (step S602).

  Next, the image display processing unit 82 specifies the length ΔXR on the right side of the center line X2 (step S603).

  When the value of ΔXL is equal to or larger than the value of ΔXR (YES in step S604), the image display processing unit 82 sets the value of the shift amount AX to the value of ΔXR (step S605).

  On the other hand, when the value of ΔXL is less than the value of ΔXR (NO in step S604), the value of the shift amount AX is set to the value of −ΔXL (step S606).

(Display corrected by correction type 2)
FIG. 20 is a flowchart showing the procedure of the process of correcting and displaying with correction type 2 in step S510 of FIG.

  Referring to FIG. 20, image display processing unit 82 writes original image data into VRAM 12 (step S701).

  The image display processing unit 82 sets the (X1, Y1)-(X2 + AX, Y2 + AY) region of the original image stored in the VRAM 12 as an image to be displayed on the display 1. When AX is positive, in addition to the block image BL (1), a part of the block image BL (2) having a width of AX on the right side of the center line X2 of the character existing on the center line X2 is displayed. 1 included in the image to be displayed. When AX is negative, an image obtained by excluding a portion having a width of only AX on the left side of the center line X2 of the character existing on the center line X2 from the block image BL (1) is displayed on the display 1. included.

  When AY is positive, in addition to the block image BL (1), a part of the block image BL (3) having a width of AY lower than the center line Y2 of the character existing on the center line Y2 is included. It is included in the image displayed on the display 1. When AY is negative, an image obtained by excluding a portion having a width of only AY above the center line Y2 of the character existing on the center line Y2 from the block image BL (1) is displayed on the display 1. included.

  The image display processing unit 82 sets the (X2 + AX, Y1) − (X2 + WX, Y2 + AY) area of the original image stored in the VRAM 12 as an image to be displayed on the display 2.

  When AX is positive, an image obtained by excluding a portion having a width of only AX on the right side of the center line X2 of the character existing on the center line X2 from the block image BL (2) is displayed on the display 2. included. When AX is negative, in addition to the block image BL (2), a part of the block image BL (1) having a width of only AX on the left side of the center line X2 of the character existing on the center line X2 is displayed. 2 is included in the image to be displayed.

  When AY is positive, in addition to the block image BL (2), a part of the block image BL (4) having a width of AY lower than the center line Y2 of the character existing on the center line Y2 is included. It is included in the image displayed on the display 2. When AY is negative, an image obtained by excluding a portion having a width of only AY above the center line Y2 of the character existing on the center line Y2 from the block image BL (2) is displayed on the display 2. included.

  The image display processing unit 82 sets the (X1, Y2 + AY) − (X2 + AX, Y2 + WY) region of the original image stored in the VRAM 12 as an image to be displayed on the display 3.

  When AX is positive, in addition to the block image BL (3), a part of the block image BL (4) having a width of only AX on the right side of the center line X2 of the character existing on the center line X2 is displayed. 3 is included in the image to be displayed. When AX is negative, an image obtained by excluding a portion of the width of only AX on the left side of the center line X2 of the character existing on the center line X2 from the block image BL (3) is displayed on the display 3. included.

  When AY is positive, an image that is displayed on the display 3 from the block image BL (3) is an image obtained by excluding a portion having a width of AY below the center line Y2 of the character existing on the center line Y2. include. When AY is negative, in addition to the block image BL (3), a part of the block image BL (1) having a width of only AY above the center line Y2 of the character existing on the center line Y2 is displayed. 3 is included in the image to be displayed.

  The image display processing unit 82 sets an area (X2 + AX, Y2 + AY) − (X2 + WX, Y2 + WY) of the original image stored in the VRAM 12 as an image to be displayed on the display 4.

  When AX is positive, an image obtained by excluding a portion having a width of only AX on the right side of the center line X2 of the character existing on the center line X2 from the block image BL (4) is displayed on the display 4. included. When AX is negative, in addition to the block image BL (4), a part of the block image BL (3) having a width of only AX on the left side of the center line X2 of the character existing on the center line X2 is displayed. 4 included in the image to be displayed.

  When AY is positive, an image that is displayed on the display 4 is an image obtained by excluding a portion of the width of AY below the center line Y2 of the character existing on the center line Y2 from the block image BL (4). include. When AY is negative, in addition to the block image BL (4), a part of the block image BL (2) having a width of only AY above the center line Y2 of the character existing on the center line Y2 is displayed. 4 (step S702).

  The image display processing unit 82 instructs the graphic controller 11 to display the set image on the display i (i = 1 to 4). The graphic controller 11 enlarges or reduces the image to be displayed on the display 1 by WX / (WX + AX) times in the X direction and WY / (WY + AY) times in the Y direction so that the image is displayed on the entire screen of the display 1. Or zoom out. The graphic controller 11 enlarges or reduces the image to be displayed on the display 2 by WX / (WX−AX) times in the X direction and WY / (WY + AY) times in the Y direction so that the image is displayed on the entire screen of the display 2. To zoom in or out. The graphic controller 11 enlarges or reduces WX / (WX + AX) times in the X direction and WY / (WY−AY) times in the Y direction so that the image displayed on the display 3 is displayed on the entire screen of the display 3. To zoom in or out. The graphic controller 11 enlarges or reduces the image to be displayed on the display 4 by WX / (WX-AX) times in the X direction so that the image is displayed on the entire screen of the display 4, and WY / (WY-AY in the Y direction. ) The image is enlarged or reduced to double (step S703).

(Display example)
FIG. 21A is a diagram illustrating an example of an original image.

  FIG. 21B is a diagram illustrating an example of an image displayed on the multi-display in the second embodiment of the present invention.

  In the embodiment of the present invention, when a character is included in the center of the original image, one character is displayed on any one display, so that the character can be completely identified.

[Third Embodiment]
In the embodiment of the present invention, a case where an original image is composed of a plurality of layers will be described.

FIG. 22 is a diagram illustrating an example in which an original image includes a plurality of layers.
As shown in FIG. 22, the original image is composed of a text layer and a plurality of image layers (image layer 1, image layer 2, image layer 3, and background layer).

FIG. 23 is a diagram illustrating an example in which data is stored for each layer.
As shown in FIG. 23, the data, coordinates, and display priority of each layer are determined.

  In the example of FIG. 23, the display priority order is set in the order of text layer, image layer 1, image layer 2, image layer 2, and background layer from the highest.

(Display processing operation)
FIG. 24 is a flowchart illustrating a display processing procedure according to the third embodiment.

  Referring to FIG. 24, first, the image display processing unit 82 writes data to the VRAM 12 in the order of the background layer, the image layer 3, the image layer 2, and the image layer 1 (step S901).

  Next, if a text layer exists (YES in step S902), the image display processing unit 82 further checks whether the text layer straddles the center line X2 in the X direction of the original image. That is, the image display processing unit 82 includes pixels constituting the text layer in both the block image BL (1) and the block image BL (2), or the block image BL (3) and the block image BL (4). To see if both are included.

  When the text layer straddles the center line X2 in the X direction of the original image (YES in step S903), the image display processing unit 82 starts from the left end of the original image at the left end of the text layer as shown in FIG. Distance TX, distance TY from the upper end of the original image at the upper end of the text layer, width TWX of the text layer, and height TWY of the text layer are specified (step S904).

  Next, the image display processing unit 82 generates the text layer 1 and the text layer 2 by dividing the text layer by the center line X2 in the X direction as shown in FIG.

  The image display processing unit 82 sets the starting point of the text layer 1 to (X1 + TX, Y1 + TY) and the size to (WX−TX) × TWY (step S905).

  Next, the image display processing unit 82 sets the starting point of the text layer 2 to (X2, Y1 + TY) and the size to (TWX + TX−WX) × TWY (step S906).

  Next, the image display processing unit 82 prevents the text layer 1 from becoming invisible by the correction processing of correction type 1 in steps S917 and S918 described later, that is, the text layer 1 is displayed on the display 2 of the block image BL (1). The start point of the text layer 1 is WD leftward so that it is not included in the edge part of the width WD from the adjacent right edge or the edge part of the width WD from the right edge adjacent to the display 4 of the block image BL (3). Is shifted by only (step S907).

  Next, the image display processing unit 82 prevents the text layer 2 from becoming invisible by the correction processing of correction type 1 in steps S917 and S918 described later, that is, the text layer 2 is displayed on the display 1 of the block image BL (2). The start point of the text layer 2 is WD to the right so that it is not included in the edge part of the width WD from the adjacent left edge or the edge part of the width WD from the left edge adjacent to the display 3 of the block image BL (4). Is shifted by only (step S908).

  Next, the image display processing unit 82 writes the data of the text layer 1 and the text layer 2 into the VRAM 12 (step S909).

  The image display processing unit 82 checks whether the text layer straddles the center line Y2 in the Y direction of the original image. That is, the image display processing unit 82 includes pixels constituting the text layer in both the block image BL (1) and the block image BL (3), or the block image BL (2) and the block image BL (4). To see if both are included.

  When the text layer straddles the center line Y2 in the Y direction of the original image (YES in step S910), the image display processing unit 82 determines the distance TX from the left end of the original image at the left end of the text layer, The distance TY from the upper end of the original image at the upper end, the horizontal width TWX of the text layer, and the height TWY of the text layer are specified (step S911).

  Next, the image display processing unit 82 generates the text layer 1 and the text layer 2 by dividing the text layer along the center line Y2 in the Y direction.

  Next, the image display processing unit 82 sets the starting point of the text layer to (X1 + TX, Y1 + TY) and the size to TWX × (WY−TY) (step S912).

  Next, the image display processing unit 82 sets the starting point of the text layer to (X1 + TX, Y2) and the size to TWX × (TWY + TY−WY) (step S913).

  Next, the image display processing unit 82 prevents the text layer 1 from becoming invisible by the correction processing of correction type 1 in steps S917 and S918 described later, that is, the text layer 1 is displayed on the display 3 of the block image BL (1). The start point of the text layer 1 is WD up so that it is not included in the edge part of width WD from the adjacent lower edge or the edge part of width WD from the lower edge adjacent to the display 4 of the block image BL (2). (Step S914).

  Next, the image display processing unit 82 prevents the text layer 2 from becoming invisible in the correction processing of correction type 1 in steps S917 and S918 described later, that is, the text layer 2 is displayed on the display 1 of the block image BL (3). The start point of the text layer 2 is WD down so that it is not included in the edge part of the width WD from the adjacent upper edge or the edge part of the block image BL (4) adjacent to the display 2 in the width WD from the upper edge. (Step S915).

  Next, the image display processing unit 82 writes the data of the text 1 layer and the text layer 2 into the VRAM 12 (step S909).

  When the text layer does not extend over the center line X2 in the X direction or the center line Y2 in the Y direction of the original image (NO in step S903, NO in step S910), the image display processing unit 82 Is directly written into the VRAM 12 (step S916).

  Next, the image display processing unit 82 determines whether there is no text layer (NO in step S902), or there is a text layer (YES in step S902), and the data of the divided text layer 1 and text layer 2 is displayed. Is written in the VRAM 12 (step S909), and the text layer data is written in the VRAM 12 (step S916). The correction process is performed and displayed.

  The image display processing unit 82 sets the (X1, Y1)-(X2-WD, Y2-WD) region of the original image stored in the VRAM 12 as an image to be displayed on the display 1. That is, the image display processing unit 82 deletes the WD width edge from the right edge adjacent to the display 2 and the WD width edge from the lower edge adjacent to the display 3 from the block image BL (1). The image is set to an image to be displayed on the display 1.

  Further, the image display processing unit 82 sets the (X2 + WD, Y1) − (X2 + WX, Y2−WD) area of the original image stored in the VRAM 12 as an image to be displayed on the display 2. That is, the image display processing unit 82 deletes the WD-wide edge from the left end adjacent to the display 1 and the WD-wide edge from the lower end adjacent to the display 4 from the block image BL (2). The image is set to an image to be displayed on the display 2.

  The image display processing unit 82 sets the (X1, Y2 + WD) − (X2−WD, Y2 + WY) region of the original image stored in the VRAM 12 as an image to be displayed on the display 3. That is, the image display processing unit 82 deletes the WD width edge from the right edge adjacent to the display 4 and the WD width edge from the upper edge adjacent to the display 1 from the block image BL (3). The image is set to an image to be displayed on the display 3.

  Further, the image display processing unit 82 sets an area (X2 + WD, Y2 + WD) − (X2 + WX, Y2 + WY) of the original image stored in the VRAM 12 as an image to be displayed on the display 4. That is, the image display processing unit 82 deletes the edge portion having a width of WD from the left end adjacent to the display 3 and the edge portion having a width of WD from the upper end adjacent to the display 2 from the block image BL (4). The image is set as an image to be displayed on the display 4 (step S917).

  The image display processing unit 82 instructs the graphic controller 11 to display the set image on the display i (i = 1 to 4). The graphic controller 11 enlarges the image to be displayed on the display i by WX / (WX-WD) times in the X direction and WY / (WY-WD) times in the Y direction so as to be displayed on the entire screen of the display i. Is enlarged and displayed (step S918).

(Display example)
FIG. 27A shows an example of a screen displayed without correction.

  As shown in FIG. 27A, if correction is not performed, an image near the boundary of the display becomes unnatural.

FIG. 27B is a diagram illustrating an example of a displayed screen corrected by the correction type 1.
As shown in FIG. 27B, correction by correction type 1 eliminates the unnaturalness of the image near the display boundary, but makes it impossible to identify characters near the display boundary.

FIG. 27C is a diagram illustrating an example of a screen displayed by the method according to the third embodiment.
In FIG. 27C, the text layer is divided at the center and moved to a position not included in the edge portion, and then the image is corrected by the correction type 1.

  In FIG. 27C, the unnaturalness of the image near the boundary of the display is eliminated, and characters near the boundary of the display can be identified.

[Fourth Embodiment]
In the third embodiment, although characters near the boundary of the display can be identified, there is a problem that it is difficult to read. In the fourth embodiment, this problem is solved.

(Display processing operation)
FIG. 28 is a flowchart illustrating a display processing procedure according to the fourth embodiment.

  Referring to FIG. 28, first, image display processing unit 82 writes data in VRAM 12 in the order of background layer, image layer 3, image layer 2, and image layer 1 (step S1001).

  Next, if there is a text layer (YES in step S1002), the image display processing unit 82 further checks whether the text layer straddles the center line X2 in the X direction of the original image. That is, the image display processing unit 82 includes pixels constituting the text layer in both the block image BL (1) and the block image BL (2), or the block image BL (3) and the block image BL (4). To see if both are included.

  When the text layer extends over the center line X2 in the X direction of the original image (YES in step S1003), the image display processing unit 82 starts from the left end of the original image at the left end of the text layer as shown in FIG. Distance TX, distance TY from the upper end of the original image at the upper end of the text layer, width TWX of the text layer, and height TWY of the text layer are specified (step S1004).

  Next, as shown in FIG. 29, the image display processing unit 82 divides the text layer 1 and the text layer 2 by dividing the text layer by a division line (X2 + BX) separated from the center line X2 in the X direction by BX. Generate. When BX is positive, a division line is set to the right from the center line X2, and when BX is negative, a division line is set to the left from the center line X2. BX is a value that satisfies the condition that the characters included in the text layer are not divided by the dividing line and that the dividing line is as close as possible to the center line X2. For example, when characters included in the text layer are configured with a width of 4 pixels on the left side of the center line X2 and a width of 10 pixels on the right side of the center line X2, the total of 10 pixels is BX. Further, when the characters included in the text layer are configured with a width of 6 pixels on the left side of the center line X2 and 4 pixels on the right side of the center line X2, the total of 10 pixels is BX.

  Next, the image display processing unit 82 sets the starting point of the text layer 1 to (X1 + TX, Y1 + TY) and the size to (WX−TX + BX) × TWY (step S1005).

  Next, the image display processing unit 82 sets the starting point of the text layer 2 to (X2 + BX, Y1 + TY) and the size to (TWX + TX−WX−BX) × TWY (step S1006).

  Next, the image display processing unit 82 prevents the text layer 1 from becoming invisible in the correction processing of correction type 1 in steps S1017 and S1018 described later, that is, the text layer 1 is displayed on the display 2 of the block image BL (1). The start point of the text layer 1 is left WD + BX so that it is not included in the edge of the width WD from the adjacent right edge or the edge of the width WD from the right edge adjacent to the display 4 of the block image BL (3). (Step S1007).

  Next, the image display processing unit 82 prevents the text layer 2 from becoming invisible by the correction processing of correction type 1 in steps S1017 and S1018 described later, that is, the text layer 2 is displayed on the display 1 of the block image BL (2). The start point of the text layer 2 is WD to the right so that it is not included in the edge part of the width WD from the adjacent left edge or the edge part of the width WD from the left edge adjacent to the display 3 of the block image BL (4). Shift by -BX (step S1008).

  Next, the image display processing unit 82 writes the data of the text layer 1 and the text layer 2 into the VRAM 12 (step S1009).

  The image display processing unit 82 checks whether the text layer extends over the center line Y2 in the Y direction of the original image. That is, the image display processing unit 82 includes pixels constituting the text layer in both the block image BL (1) and the block image BL (3), or the block image BL (2) and the block image BL (4). To see if both are included.

  When the text layer extends over the center line Y2 in the Y direction of the original image (YES in step S1010), the image display processing unit 82 determines the distance TX from the left end of the original image at the left end of the text layer, the text layer The distance TY from the upper end of the original image at the upper end, the horizontal width TWX of the text layer, and the height TWY of the text layer are specified (step S1011).

  Next, the image display processing unit 82 generates the text layer 1 and the text layer 2 by dividing the text layer by a dividing line (Y2 + BY) that is separated from the center line Y2 in the Y direction by BY. When BY is positive, a dividing line is set below the center line Y2, and when BY is negative, a dividing line is set above the center line Y2. BY is a value that satisfies the condition that the characters included in the text layer are not divided by the dividing line and that the dividing line is as close as possible to the center line Y2. For example, when the characters included in the text layer are configured with a width of 4 pixels above the center line Y2 and 6 pixels below the center line Y2, a total of 10 pixels, BY is −4. Further, when the characters included in the text layer are configured with a width of 6 pixels above the center line Y2 and 4 pixels below the center line Y2, a total of 10 pixels, BY is +4.

  The image display processing unit 82 sets the starting point of the text layer to (X1 + TX, Y1 + TY) and the size to TWX × (WY−TY + BY) (step S1012).

  Next, the image display processing unit 82 sets the starting point of the text layer to (X1 + TX, Y2 + BY) and the size to TWX × (TWY + TY−WY−BY) (step S1013).

  Next, the image display processing unit 82 prevents the text layer 1 from becoming invisible in the correction processing of correction type 1 in steps S1017 and S1018 described later, that is, the text layer 1 is displayed on the display 3 of the block image BL (1). The start point of the text layer 1 is WD + BY upward so that it is not included in the edge part of the width WD from the adjacent lower edge or from the lower edge adjacent to the display 4 of the block image BL (2) of only the width WD. (Step S1014).

  Next, the image display processing unit 82 prevents the text layer 2 from becoming invisible in the correction processing of correction type 1 in steps S1017 and S1018 described later, that is, the text layer 2 is displayed on the display 1 of the block image BL (3). The start point of the text layer 2 is WD down so that it is not included in the edge part of the width WD from the adjacent upper edge or the edge part of the block image BL (4) adjacent to the display 2 in the width WD from the upper edge. -BY is shifted (step S1015).

  Next, the image display processing unit 82 writes the data of the text 1 layer and the text layer 2 into the VRAM 12 (step S1009).

  If the text layer does not extend over the center line X2 in the X direction or the center line Y2 in the Y direction of the original image (NO in step S1003, NO in step S1010), the image display processing unit 82 Is directly written into the VRAM 12 (step S1016).

  Next, the image display processing unit 82 determines whether the text layer does not exist (NO in step S1002), or the text layer exists (YES in step S1002), and the divided text layer 1 and text layer 2 data. Is written in the VRAM 12 (step S1009), and after the text layer data is written in the VRAM 12 (step S1016), the correction type 1 is performed by the following steps S1017 and S1018 (processing similar to steps S402 and S403). The correction process is performed and displayed.

  The image display processing unit 82 sets the (X1, Y1)-(X2-WD, Y2-WD) region of the original image stored in the VRAM 12 as an image to be displayed on the display 1. That is, the image display processing unit 82 deletes the WD width edge from the right edge adjacent to the display 2 and the WD width edge from the lower edge adjacent to the display 3 from the block image BL (1). The image is set to an image to be displayed on the display 1.

  Further, the image display processing unit 82 sets the (X2 + WD, Y1) − (X2 + WX, Y2−WD) area of the original image stored in the VRAM 12 as an image to be displayed on the display 2. That is, the image display processing unit 82 deletes the WD-wide edge from the left end adjacent to the display 1 and the WD-wide edge from the lower end adjacent to the display 4 from the block image BL (2). The image is set to an image to be displayed on the display 2.

  The image display processing unit 82 sets the (X1, Y2 + WD) − (X2−WD, Y2 + WY) region of the original image stored in the VRAM 12 as an image to be displayed on the display 3. That is, the image display processing unit 82 deletes the WD width edge from the right edge adjacent to the display 4 and the WD width edge from the upper edge adjacent to the display 1 from the block image BL (3). The image is set to an image to be displayed on the display 3.

  Further, the image display processing unit 82 sets an area (X2 + WD, Y2 + WD) − (X2 + WX, Y2 + WY) of the original image stored in the VRAM 12 as an image to be displayed on the display 4. That is, the image display processing unit 82 deletes the edge portion having a width of WD from the left end adjacent to the display 3 and the edge portion having a width of WD from the upper end adjacent to the display 2 from the block image BL (4). The image is set to an image to be displayed on the display 4 (step S1017).

  The image display processing unit 82 instructs the graphic controller 11 to display the set image on the display i (i = 1 to 4). The graphic controller 11 enlarges the image to be displayed on the display i by WX / (WX-WD) times in the X direction and WY / (WY-WD) times in the Y direction so as to be displayed on the entire screen of the display i. Is enlarged and displayed (step S1018).

(Display example)
FIG. 30 is a diagram illustrating an example of a screen displayed by the method according to the fourth embodiment.

  In FIG. 30, the text layer is divided by lines where characters are not divided and moved to a position not included in the edge portion, and then the image is corrected by the correction type 1.

  In FIG. 30, the unnaturalness of the image near the boundary of the display is eliminated, and the characters near the boundary of the display can be clearly identified.

  The present invention is not limited to the above embodiment, and includes, for example, the following modifications.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1-4 display, 5 video output terminal, 6 video transmission cable, 7 CPU, 8 auxiliary storage device, 9 RAM, 10 ROM, 11 graphic controller, 12 VRAM, 13 video signal driver, 15 video input terminal, 16 video signal receiver , 17 LCD controller, 18 segment driver, 19 LCD, 20 common driver, 81 character recognition unit, 82 image display processing unit, 93 input device, 94 computer.

Claims (8)

A multi-display system that divides and displays an original image on a plurality of display screens, wherein the size of the original image is equal to the sum of the sizes of the screens of the plurality of displays, When the image assigned to each display is a block image for each display,
When the edge part adjacent to the other display included in the block image of one display and no character is included in the edge part having a predetermined width, the edge from the block image of the one display An image display processing unit for setting an image from which the part has been deleted as an image to be displayed on the screen of the one display;
A multi-display system comprising: a display control unit configured to enlarge the set image so as to be displayed on the entire screen of each display, and to display the enlarged image on the screen of each display.   The display control unit displays the block image of the one display on the screen of the one display when a character is included in the edge portion included in the block image of the one display. The described multi-display system.   The multi-display system according to claim 1, wherein the predetermined width is a width of a casing of the one display adjacent to the other display. A multi-display system that divides and displays an original image on a plurality of display screens, wherein the size of the original image is equal to the sum of the sizes of the screens of the plurality of displays, When the image assigned to each display is a block image of each display when divided by the dividing line according to the size,
When pixels constituting one character are included in both a block image of one display and a block image of another adjacent display, the character is displayed on either the one display or the other display. An image display processing unit configured to set an image to be displayed on the screen of each display by dividing the original image by shifting the dividing line so as to be included;
A multi-display system comprising: a display control unit that enlarges or reduces the set image so as to be displayed on the entire screen of each display, and displays the enlarged or reduced image on the screen of each display. .   The image display processing unit compares a shift amount when shifting the division line so that the character is included in the one display and a shift amount when shifting the division line so that the character is included in the other display. The multi-display system according to claim 4, wherein the dividing line is shifted in a direction with a smaller shift amount. A multi-display system that displays an original image composed of an image layer and a text layer on a plurality of display screens, wherein the size of the original image is equal to the sum of the screen sizes of the plurality of displays, Is divided by the dividing line corresponding to the screen size of each display, and the image assigned to each display is a block image of each display,
When the pixels constituting the text layer are included in both the block image of one display and the block image of another adjacent display, the text layer is divided by the dividing line to thereby divide the first display. An image display processing unit that divides the first text layer displayed on the screen and the second text layer displayed on the screen of the other display,
The image display processing unit further moves the position of the first text layer so that the first text layer is not included in the edge portion of the block image of the first display, and the second text Move the position of the second text layer so that the layer is not included in the edge of the block image of the other display;
The edge portion of the block image of the one display is an end portion adjacent to the other display included in the block image of the one display, and is a portion having a first predetermined width, The edge part of the block image of the other display is a part of the end adjacent to the first display, which is included in the block image of the other display, and has a second predetermined width,
The image display processing unit sets an image in which the edge portion is deleted from the block image of the one display as an image to be displayed on the screen of the one display, and the edge from the block image of the other display. Set the image with the part deleted as an image to be displayed on the screen of the display 1,
A multi-display system comprising: a display control unit configured to enlarge the set image so as to be displayed on the entire screen of each display, and to display the enlarged image on the screen of each display. A multi-display system that displays an original image composed of an image layer and a text layer on a plurality of display screens, wherein the size of the original image is equal to the sum of the screen sizes of the plurality of displays, Is divided by the dividing line corresponding to the screen size of each display, and the image assigned to each display is a block image of each display,
When the pixels constituting the text layer are included in both the block image of one display and the block image of another adjacent display, the text layer is a line in which characters included in the text layer are not divided, An image display processing unit that divides a first text layer displayed on a screen of one display and a second text layer displayed on a screen of another display;
The image display processing unit further moves the position of the first text layer so that the first text layer is not included in the edge portion of the block image of the first display, and the second text Move the position of the second text layer so that the layer is not included in the edge of the block image of the other display;
The edge portion of the block image of the one display is an end portion adjacent to the other display included in the block image of the one display, and is a portion having a first predetermined width, The edge part of the block image of the other display is a part of the end adjacent to the first display, which is included in the block image of the other display, and has a second predetermined width,
The image display processing unit sets an image in which the edge portion is deleted from the block image of the one display as an image to be displayed on the screen of the one display, and the edge from the block image of the other display. Set the image with the part deleted as an image to be displayed on the screen of the display 1,
A multi-display system comprising: a display control unit configured to enlarge the set image so as to be displayed on the entire screen of each display, and to display the enlarged image on the screen of each display. The first predetermined width is a width of a casing of the one display adjacent to the other display,
The multi-display system according to claim 6, wherein the second predetermined width is a width of a housing of the other display adjacent to the first display.

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