JPH1063421A - Coordinate input method for display, and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to perform coordinate input by using the screen of a multi-screen type display as an interface by providing each core display with an indicated position detecting means, and composing total position information of position information obtained from the position detecting means. SOLUTION: An address generating device 15 of the multi-screen type display 3 outputs address signals of four systems, which are inputted to an address composition arithmetic unit 5. The address signals of the four systems are inputted to a CPU 25 through output interfaces 20-23 and processed so that address data of address generating devices 15 of respective core displays 6-9 become one address data on the whole. The CPU 25 sends the total address obtained by the arithmetic processing to a PC 1 through an input/output interface 24. Consequently, the PC 1 recognizes the position indicated with an indicating means 4 and displays a mouse cursor, etc., at the position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coordinate input of a display device capable of inputting coordinates by pointing a display screen (screen).

[0002]

2. Description of the Related Art In recent years, at various exhibitions and presentations, presentations using a multi-screen display in which one large display screen is formed by combining a plurality of core displays are actively performed. This presentation system includes a system that automatically displays images and a system that displays images manually by a dedicated operator. In the latter case, interactivity is required in the form of a presentation or the like, but until now, only the presentation was performed while pointing to the display image in cooperation with the dedicated operator, and the mouse cursor displayed on the computer image display screen was moved and operated There was no function to do. Recently, a display device has been proposed which can operate a mouse cursor or overwrite a display image by using a screen itself as an interface from a conventional display only for viewing.

For example, Japanese Patent Application Laid-Open No. 4-37922 discloses that when an instructor designates a required portion with respect to an image shown on a display means by an instruction means in his / her hand, a means for detecting a position is provided by the instruction means. There is disclosed a display device which detects a specified position, makes a necessary change to an image of a designated portion from the detection result, or switches an image. This display device suggests using a video camera as the detecting means and using a light emitting diode or the like as the indicating means.

[0004] In addition, similar display devices are disclosed in JP-A-5-233148 and JP-A-4-299727.

[0005]

However, the above-mentioned conventional display device can only deal with a single-type display, and does not consider a multi-screen type display at all. In addition, correspondence to a plurality of instruction means is not considered.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make it possible to input coordinates using a screen as an interface in a multi-screen display.

Another object of the present invention is to make it possible to input coordinates for instructing a mouse cursor operation using a display screen as an interface.

It is still another object of the present invention to enable simultaneous input of a plurality of coordinates using a display screen as an interface.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem. A pointing position detecting means is provided for each core display, and the entire position is obtained from position information obtained from the position detecting means. By combining information, the coordinates can be input on a multi-screen display.

[0010] Further, the movement of the mouse cursor is controlled by obtaining difference data between the input position and the mouse cursor.

[0011] Further, the detection means can detect and determine the color, size, etc., and can cope with a plurality of instruction inputs.

[0012]

FIG. 1 is a block diagram showing a first embodiment of a multi-screen display device according to the present invention.

The multi-screen display device is a personal computer (hereinafter referred to as PC) 1, P
An enlargement / distribution device 2, a multi-screen type display 3, an instruction means 4, and an address synthesis operation device 5 for dividing and outputting the C1 video signal are provided. The multi-screen display 3 has four core display units 6,
7, 8, and 9 are examples. Each of the core display units 6, 7, 8, 9 includes a video projection device 11,
The apparatus includes a reflection mirror 12 and a position detection unit 13. The position detecting means 13 includes, for example, a video camera 14 and an address generating device 15. As the address generator 15, for example, a technical report of the Institute of Television Engineers of Japan (ITE Technica)
l The image extraction processing LSI described in Report Vol.18 No.8 pp13-18) can be used. This image extraction processing LS
I digitally processes a video signal photographed by a camera, extracts a portion of the video signal that meets a condition of a specific luminance and a specific color, and outputs the position as address data. In the embodiment shown in FIG. 1, four address signals are output from the address generator 5 of the multi-screen display 3 and input to the address synthesizer 5. The address synthesizing operation device 5 includes, for example, input / output interfaces 20 to 24, a CPU 25, a RAM 26, and a ROM 27. Note that the instruction means 4 is constituted by, for example, a light emitting element.

The address signals of the four systems are taken into the CPU 25 via the input / output interfaces 20 to 23, and are subjected to arithmetic processing so that the address data of the address generator 15 of each core display becomes one address data as a whole. The CPU 25 sends the entire address obtained by the arithmetic processing to the PC 1 via the input / output interface 24. As a result, the PC 1 recognizes the position pointed by the instruction means 4 and displays a mouse cursor or the like at that position.

FIG. 2 shows an example of the processing performed by the address synthesizing operation device 5. Here, the screen of the multi-screen display 3 is set to areas 1 to 4 as shown in FIG. 3, and one core display 6 (7
The range covered by the camera 14 and the address generating device 15 in (9) to (9) is one of the areas 1 to 4. Areas 1 to 4 correspond to each core display 6.
9 are the same areas corresponding to the display areas 9 to 9 respectively. Further, for the sake of explanation, the display resolution per core display is assumed to be 640 horizontal and 480 vertical, and the defense range corresponding to the camera 14 and the address generator 15 is also assumed to be 640 horizontal and 480 vertical.

First, in step 1001, address data x and y of area 1 are input. In step 1002, it is determined whether the values of x and y are valid. For this determination, for example, when the address generator 15 cannot detect the instruction means 4, the address generator 15 sets a value other than x = 0 to 640 and y = 0 to 480, such as x = 1000, y = 1000. You should do so.

If the result of the determination in step 1002 is "y
If "es", the values of the entire x and y areas are calculated in step 1012, and the control data is output to PC1.

If "no" is determined in step 1002, the address data of area 2 is input in step 1003, and the validity of the data is determined in step 1004 in the same manner as in area 1. If the determination result in step 1004 is “yes”, x in step 1005
Is added to "640". This is, as shown in FIG.
Area 2 is located on the right half of the whole area, so "6"
This is because an offset of "40" is required.

If the result of the determination in step 1004 is "no", the data of area 3 is further inputted, and
At 007, the validity of the data is determined in the same manner as before. If the result of this determination is "yes", "480" is added to y since area 3 is located on the lower half surface. If "no" in the step 1007, the data of the area 4 is input, and the validity of the data is determined in the step 1014. If the result of this determination is “yes”, x is set to “64”.
"480" is added to "0" and y, and the whole address data is calculated in step 1012 to output control data to PC1. If the determination in step 1014 is "no", it means that the instructing means 4 has not been able to detect in any area, and the process proceeds to step 1013 without outputting control data based on the entire address data. In step 1013, it is determined whether to end the entire system. The end of the entire system may be determined, for example, by stopping the operation of the system due to a power shutdown or the like. When the result of the determination in step 1013 is “no”, the flow returns to step 1001. If the system is not terminated, the pointing position of the pointing means 9 is always detected and control data based on the position is transmitted to the PC 1.

By performing the above processing by the address synthesizing arithmetic unit 5, the designated portion of the screen surface 10 of the multi-screen type display 3 designated by the indicating means 4 can be transmitted to the PC 1, for example, by the indicating means 4. The mouse cursor by the PC 1 can be displayed at the designated position.

Although the so-called mirror-folding type using the reflection mirror 12 as the multi-screen display 3 has been described as an example, a multi-screen of a type in which a projection image is directly reflected on a screen surface without being reflected by the reflection mirror. The present invention can be effectively applied to a system type display. In addition, an operation corresponding to a button click when performing a mouse (cursor) operation is realized by providing a button on the instruction means 4 and changing the light emission intensity of the instruction means 4 by pressing the button. Of course, it goes without saying that the address generator 15 sets, for example, two detection levels of high and low.

FIG. 4 is a block diagram showing a second embodiment of the multi-screen display device according to the present invention. The feature of the embodiment shown in FIG. 4 is that the position indicated by the indicating means 4 and the screen
The position of the mouse cursor 30 of the PC 101 projected on the PC 101 is detected by the address synthesizing operation device 105, and the control is performed so that the difference between the two becomes zero. Thus, the control data sent from the address synthesizing operation device 105 to the PC 101 may be only the difference from the current position. The address data at the position designated by the designation means 4 is directly transmitted to the PC 1
01, the mouse cursor control that operates based on the difference data from the current position cannot be performed because the data is an absolute address on the screen 110. Driver software is required. In this embodiment,
By transmitting the same data as the mouse operation data to the PC 101, it is not necessary to install such special driver software.

In the example shown in FIG. 4, only one core display 106 is shown and described.

The camera 114 fetches both image data of the pointing means 4 and the mouse cursor 30, and
At 15 each position is detected. The discrimination between the two image data is made, for example, by setting the indicating means 4 and the mouse mark 30 to different colors and using the different colors. As the address generation device 115, the above-described image extraction LSI or the like may be used.

The output data of the address generator 115 is
The address is input to the address synthesizing operation unit 105. Although not specifically shown in FIG. 4, if a multi-screen display similar to that of FIG. 1 is used, there are three other input systems. In the address synthesizing operation device 105, the entire address is obtained for each of the pointing means 4 and the mouse cursor 30 by the same processing as in the first embodiment. Then, the difference data is sent to the PC 101 as mouse movement data so that the distance difference between the pointing means 4 and the mouse cursor 30 disappears. The address synthesizing arithmetic unit 105 outputs the difference data until the pointing means 4 and the mouse cursor 30 match. In this way, the mouse cursor 30 is displayed at the position indicated by the indicating means 4.

Thus, it is possible to realize a mouse cursor operation and the like by the instruction of the instruction means 4 without installing special driver software or the like in the PC 101.

FIG. 5 shows a third embodiment in which a mouse cursor operation or the like can be performed by the instruction means 104 without installing special driver software in the PC 101.

Using an infrared light emitting element for the indicating means 104,
The mouse cursor 30 is for detecting each using a separate camera and address generator. The detection by the instruction means 104 is performed by the camera 314 and the address generator 31.
Step 5 The camera 314 inserts, for example, a visible light cut filter in front of the CCD device so as to respond only to infrared light. On the other hand, detection of the mouse cursor 30 is performed by the camera 214 and the address generator 215. Camera 2
Reference numeral 14 inserts, for example, an infrared cut filter in front of the CCD device so as to respond to only visible light. In this way, the pointing means 104 is invisible light and the mouse cursor 30
Are exclusively detected with visible light, thereby providing the advantage that the detection accuracy of each can be increased.

The address of the pointing means 104 and the address of the mouse cursor 30 detected in this way are input to the address synthesizing unit 205. Although not particularly shown in FIG. 5, if a multi-screen display similar to that of FIG. 1 is used, there are three other input systems. In the address synthesizing operation device 205, the pointing means 104 and the mouse cursor 3
For each of 0, the entire address is obtained by the same processing as in the first embodiment. Then, the difference data is sent to the PC 101 as mouse movement data so that the distance difference between the pointing means 104 and the mouse cursor 30 is eliminated. The address synthesizing unit 205 outputs the difference data until the pointing means 104 and the mouse cursor 30 match. In this way, the mouse cursor 30 is displayed at the position designated by the designation means 104.

Thus, the instruction means 10 can be installed without installing special driver software or the like in the PC 101.
4 can realize mouse cursor operation and the like.

FIG. 6 shows a fourth embodiment in which a mouse cursor operation or the like can be performed by the instruction means 104 without installing special driver software in the PC 101. This embodiment is characterized in that the mouse cursor 30 is detected directly by the address generator 415 based on a video signal to the projection device 111. Since the position of the mouse cursor is detected based on a video signal instead of image data of the mouse cursor captured by the camera, the detection accuracy is further improved.

The processing after inputting the output data of the address generators 415 and 115 to the address synthesizing operation unit 205 is the same as that of the embodiment shown in FIG.

As described above, according to this embodiment, it is possible to realize a mouse cursor operation without installing special driver software. Further, in this embodiment, not only a multi-screen display but also a single display can be used.

FIG. 7 shows a fifth embodiment of the multi-screen display device according to the present invention. In this embodiment, the VRAM 4
1 to 44, the video signal synthesizing device 40 is provided on the core display 406, and the video signal from the enlargement / distribution device 2 and V
The video signal from the RAM 41 is synthesized by the video signal synthesizing device 40 and input to the projection device 111 to project the synthesized video onto the screen 410. The trajectory of the instruction means 4 is displayed above. In other words, draw a character or the like on a blackboard etc.
The feature is that writing can be directly performed on the reference numeral 10. In FIG. 7, only one core display 406 is illustrated and described.

In this example, the VRAMs 41 to 44
(The VRAM 41 corresponds to the area 1, the VRAM 42 corresponds to the area 2, the VRAM 43 corresponds to the area 3, and the VRAM 44 corresponds to the area 4). Then, the address synthesis operation device 305
Is the input / output interface 1 as in the first embodiment.
Each core display 4 captured via 20 to 123
06, based on the output data of the address generator 115, the entire address of the position designated by the instruction means 4 is obtained, and then any of the VRAs corresponding to the entire address is obtained.
Write drawing data and the like in M. The address of the VRAM 41 is made to match the display address of the core display 406. The video signal combining device 40 may be composed of, for example, a frame memory or the like, and combines the video signal from the enlargement / distribution device 2 and the video signal from the VRAM 41. Of course, the video signal of the enlargement / distribution apparatus 2 and the video signal of the VRAM 41 are switched or mixed at a desired timing by using the signal of the VRAM 41 as a key signal, and the locus of the instruction means 4 is displayed on the display screen of the PC 1 by mixing. Try to draw. Note that a frame memory or the like may be used as the VRAMs 31 to 34.

Since the video is synthesized by the video signal synthesizing device 40, the function of overwriting the display screen can be realized without performing any troublesome work such as changing the software of the PC 1.

In this embodiment, a multi-screen display has been described as an example for explanation, but it goes without saying that a single display may be used.

FIG. 8 shows a sixth embodiment of the multi-screen display device according to the present invention. 8, only one core display 506 is illustrated and described. This embodiment is for improving the position detection accuracy of the pointing means 4.

The output signal of the camera 414 is processed by a plurality of address generators 515, 615, 715 and 815.
For example, the output signal of the camera 414 is divided into four areas as shown in FIG.
15, the area 2 is processed by the address generator 615, the area 3 is processed by the address generator 715, and the area 4 is processed by the address generator 815. Of course, the camera 414 has a resolution equivalent to 1280 horizontal and 960 vertical, and the address generators 515, 615,
Reference numerals 715 and 815 can process a video signal having a resolution equivalent to 640 horizontal and 480 vertical.

Address generators 515, 615, 71
5,815 output signals are input / output interface 220
223 to the address synthesis arithmetic unit 405 for processing. Address generators 515, 615, 71
Since the processing procedure itself of the address synthesizing operation unit 405 for 5,815 is divided into four areas of one screen, the processing can be basically performed in the same procedure as in the first embodiment. The detailed description to be made is omitted.

As described above, the image of the camera arranged on one core display is transferred to the plurality of address generators 51.
5, 615, 71, and 815 can improve the position detection accuracy.

FIG. 10 shows a seventh embodiment for improving the position detection accuracy.
Is shown. The configuration of the system is basically the same as that of the sixth embodiment shown in FIG.
The image data fetched in 4 is shared by four address generators 515, 615, 715 and 815 for each data. FIG. 10 shows this sharing. The pixel assigned to the address generator 515 is assigned a symbol a, the address generator 615 is assigned a symbol b, the address generator 715 is assigned a symbol c, and the address generator 815 is assigned a symbol c. Is given the symbol d.

The address synthesizing arithmetic unit 405 processes the address data x, y of the core display 506 with respect to the address data xx, yy of the address generators 515, 615, 715, 815 as follows.

With respect to the xx, yy data (symbol a) of the address generator 515, x = 2 · xx, y = 2 · yy (1) xx, yy data of the address generator 615 (Symbol b)
X = 2 · xx + 1, y = 2 · yy (2) xx, yy data (symbol c) of the address generator 715
X = 2 · xx, y = 2 · yy + 1 (3) xx, yy data of the address generator 815 (symbol d)
X = 2 · xx + 1, y = 2 · yy + 1 (4) For example, the position of the symbol “b” indicated by a white character on a black background in FIG. Since xx = 1 and yy = 1, processing is performed according to the equation (2) and x =
3, y = 2.

In this way, the core display 506
Can be improved in position detection accuracy. The operation of synthesizing the address obtained in this manner and the address of the other core display is the same as in the first embodiment, and a duplicate description will be omitted.

FIG. 11 shows an eighth embodiment in which the embodiment for improving the position detection accuracy described with reference to FIGS. 8 and 9 is modified. In the eighth embodiment, the core display is divided into four parts by using four cameras 514, 614, 714, and 814 for capturing and capturing, and the address generator 51 is provided for each of the cameras 514 to 815.
5, 615, 715, and 815 are for obtaining an instruction address of the instruction means 4. 8 and 9, the high-definition camera 414 is required. In this embodiment, the number of cameras is large but the resolution is lower than the cameras 414 (for example, the resolution is about 640 horizontal and 480 vertical). Will be good. The processing in the address combining operation device 405 is the same as that in the embodiment of FIGS. 8 and 9, and a detailed description thereof will be omitted.

This embodiment is advantageous for improving the position detection accuracy. Further, this embodiment can improve the position detection accuracy even when applied to not only a multi-screen display but also a single display.

FIG. 12 shows a ninth embodiment of the multi-screen display device according to the present invention. Here, only one core display 706 is illustrated and described. In this embodiment, the detection signal level of the instruction means 204 is improved. If the instructing unit 204 generates visible light, the image projected from the projection device 211 overlaps on the screen. Therefore, the luminance level of the instructing unit 204 and the screen 710 of the projected image are overlapped.
If the luminance levels are the same, it becomes impossible to discriminate them. Therefore, a vertical synchronization signal is input from the projection device 211 to the camera 914, and the image data capture timing of the camera 914 is set to the vertical retrace period of the projection device 211, that is, the moment when the projection image is not displayed on the screen 710. By doing so, when the image data of the camera 914 is taken in, there is no projected image on the screen, so that only the light emission of the indicating means 204 exists, which makes it easy to discriminate. The processing after the generation of the address is the same as that of the first embodiment, and a duplicate description will be omitted. Needless to say, this embodiment can be applied not only to a multi-screen display but also to a single display.

FIG. 13 shows a tenth embodiment of the multi-screen display device according to the present invention.
Note that, here, only one core display 806 is illustrated and described. This embodiment is an embodiment in which a plurality of instruction units are detected at the same time. Instruction means 304, 404
Have different light emitting areas. That is, the address generator 9
By determining the size and the detection position at 15, a plurality of indicating means are discriminated and detected. Address generator 915
For example, the aforementioned image extraction LSI may be used. The processing after the generation of the address is the same as that of the first embodiment, and a duplicate description will be omitted. This embodiment can be applied not only to a multi-screen display but also to a single display.

FIG. 14 shows an eleventh embodiment in which the embodiment for simultaneously detecting a plurality of instruction means is modified. Here, only one core display 906 is illustrated and described. In the eleventh embodiment, a plurality of instruction means are simultaneously detected by utilizing a difference in color.
The indicating means 504 and the indicating means 604 have different emission colors. At this time, the color space of the image data captured by the camera 14 (here, the luminance Y and the color difference R
(Represented by −Y, BY)) are as shown in FIG. 15. Therefore, if the address generator 2015 having the image extracting function described above is used, the indicating means 504 and the indicating means 6 are used.
04 can be detected separately.

In the manner described above, a plurality of indicating means 504 and 604 can be detected. Here, the case where there are two indicating means is illustrated and described, but it goes without saying that the number of indicating means can correspond to an arbitrary number.

FIG. 16 shows a twelfth embodiment of the multi-screen display device according to the present invention.
Note that also here, only one core display 2006 is illustrated and described. In the twelfth embodiment, a shadow is used as an instruction means. For example, screen surface 20
When the hand 50 is moved closer to 10, outside light is blocked by the hand 50 inside the core display, and a shadow 51 is formed. The detecting means captures and detects the shadow 51. The position detection may be performed by the address generator 2015 having the image extraction function described above. By doing so, it becomes possible to input information via the display without using any special instruction means. The processing after the generation of the address is the same as that of the first embodiment, and a duplicate description will be omitted. This embodiment can be applied not only to a multi-screen display but also to a single display.

FIG. 17 shows a thirteenth embodiment of the multi-screen display device according to the present invention.
Here, only one core display 3006 is illustrated and described. The thirteenth embodiment is another embodiment relating to the improvement of the position detection accuracy of the pointing means 4 described in FIG. 8 and the like, and includes two cameras 3014a and 4014b and an address generation device 3015 corresponding to each camera.
a and 4015b are provided to detect the approximate position of the indicating means 4 and then to detect the detailed position, thereby improving the detection accuracy.

First, the whole screen 3010 is photographed by the whole camera 3014a, image data is taken in, the position of the pointing means 4 is detected by the address generating device 3015a (this position data becomes a rough position), and the address generating device 3015a Is output to the CPU 3025. C
The PU 3025 controls the local camera 4014b and the address generator 4015b based on this data so as to perform position detection again in an area where the area including the indicating means 4 is narrowed down from the entire area. The concept of this situation is shown in FIG.
Shown in

An area 70 is an entire image captured by the entire camera 3014a, and a local area including the indicating means 4 is an area 71. The local camera 4014b
1 is zoomed in and taken in, and the address generator 40
At 15b, the position of the indicating means 4 is obtained, and the position data is sent to the CPU 3025 of the address synthesizing arithmetic unit 3005.
The CPU 3025 obtains approximate position data of the pointing means 4 over the entire screen from position data based on the camera 3014a and the address generator 3015a.
From the position data based on the address generator 4015b, the detailed position data of the pointing means 4 at the local portion is obtained. By adding or subtracting detailed position data to or from the approximate position data, an accurate position of the pointing means 4 on the entire screen (screen 3010) of the core display 3006 can be obtained. The processing itself for the entire screen of the multi-screen display in the address synthesis arithmetic unit 3005 may be basically the same processing procedure as that of the first embodiment, and thus redundant detailed description will be omitted.

As described above, by detecting the approximate position and detecting the detailed position in the local area narrowed down from the approximate position, the position detection accuracy can be improved.

Although the thirteenth embodiment shown in FIG. 17 uses two systems of position detecting means consisting of cameras 3014a and 3014b and address generators 3015a and 3015b, the same position detecting process can be realized by one system. can do. For example, if only the camera 3014a and the address generator 3015a are provided, first,
At 14a, the image data of the entire screen 3010 is fetched, and the approximate position data of the pointing means 4 is detected by the address generator 3015a.
005 to the CPU 3025. And the CPU 302
5 to determine the local capture portion, and again the local
At 014a, the image is captured by zooming, and the designated position is detected by the address generator 3015a. The position data of the indicating means 4 at the local part thus obtained is
It is sent to the address synthesizing operation device 3005 again, and the accurate position of the indicating means 4 is obtained in the same manner as described with reference to FIG. As described above, this embodiment can be modified so as to be implemented by one system of detection means including one camera and an address generator. Note that, also here, the processing procedure itself for the entire screen of the multi-screen display is basically the same as that of the first embodiment, and thus redundant detailed description will be omitted.

According to such position detection, the position detection accuracy can be improved. Also, this embodiment
Position detection accuracy can be improved even when applied to a single display as well as a multi-screen display.

[0059]

According to the present invention, in a multi-screen display, an image itself is used as an interface to detect a coordinate input and can be used for mouse cursor operation, overwriting on a display image, and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a multi-screen display device according to the present invention.

FIG. 2 is a flowchart of a process executed by an address synthesis operation device of the multi-screen display device shown in FIG.

FIG. 3 is an address division diagram of an address combining operation device of the multi-screen display device shown in FIG. 1;

FIG. 4 is a block diagram showing a second embodiment of the multi-screen display device according to the present invention.

FIG. 5 is a block diagram showing a third embodiment of the multi-screen display device according to the present invention.

FIG. 6 is a block diagram showing a fourth embodiment of the multi-screen display device according to the present invention.

FIG. 7 is a block diagram showing a fifth embodiment of the multi-screen display device according to the present invention.

FIG. 8 is a block diagram showing a sixth embodiment of the multi-screen display device according to the present invention.

FIG. 9 is a view showing a screen area of an address generator of the multi-screen display device shown in FIG. 8;

FIG. 10 shows a pixel in charge of an address generator in a multi-screen display device according to a seventh embodiment of the present invention.

FIG. 11 is a block diagram showing an eighth embodiment of the multi-screen display device according to the present invention.

FIG. 12 is a block diagram showing a ninth embodiment of a multi-screen display device according to the present invention.

FIG. 13 is a block diagram showing a tenth embodiment of the multi-screen display device according to the present invention.

FIG. 14 is a block diagram showing an eleventh embodiment of the multi-screen display device according to the present invention.

FIG. 15 is a diagram showing a color space coordinate position of a pointing means in the multi-screen display device according to the present invention shown in FIG. 14;

FIG. 16 is a block diagram showing a twelfth embodiment of the multi-screen display device according to the present invention.

FIG. 17 is a block diagram showing a thirteenth embodiment of the multi-screen display device according to the present invention.

FIG. 18 is a diagram illustrating an image data capture image in the multi-screen display device according to the present invention shown in FIG. 17;

[Explanation of symbols]

1. Personal computer, 2. Enlargement and distribution device, 3.
Multi-screen display, 4 ... instruction means, 5
... Address synthesis operation device, 6, 7, 8, 9 ... core display, 10 ... screen, 11 ... video projection device, 12
... Reflection mirror, 13 ... Position detecting means, 14 ... Camera, 1
5 address generators, 20, 21, 22, 23, 24 ...
I / O interface, 25 ... CPU, 26 ... RAM,
27 ROM.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Fumio Haruna 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Pref. Multimedia System Development Division, Hitachi, Ltd.

Claims (18)

[Claims] 1. A method for inputting coordinates of a multi-screen display, in which a plurality of core displays are combined to form one large display screen, wherein an arbitrary position on the screen of the multi-screen display designated by an instruction means is set to each core. Detected by the position detecting means provided on each of the displays, the address output of the position detecting means is used as an input, and the whole address of the multi-screen display is synthesized and calculated by an address synthesizing arithmetic unit. A method for inputting coordinates of a display, comprising transmitting control data based on the result to a device connected to the multi-screen display. 2. A coordinate input method for a display, wherein a position detecting means is provided in an image display device, and a specific image pattern is displayed on a screen of the image display device specified by the specifying means. A coordinate input method for a display, comprising detecting a difference between a position and a position of the specific image pattern, and transmitting control data based on the detected difference amount to a device connected to the image display device. 3. The method according to claim 2, wherein the position of the pointing means and the position of the specific image pattern are detected by separate detecting means. 4. A method according to claim 2, wherein said specific image pattern is detected based on a video signal. 5. A method for inputting coordinates of a multi-screen display, in which a plurality of core displays are combined to form one large display screen, wherein an arbitrary position on the screen of the multi-screen display designated by an instruction means is: The address output output from the position detection means provided in each of the core displays is used as an input to determine the overall address of the multi-screen display by an address synthesizing operation device, and the result obtained by the address synthesizing operation device is A display that generates drawing data with control data based on the drawing, and combines the drawing data with a video signal of a device input to the core display by a video synthesis device provided in the core display and displays the drawing data on the core display. Coordinate input Method. 6. A method for inputting coordinates of a display, wherein a position on a screen of an image display device designated by a designation means is detected by a position detection means provided in the image display device. Address detection means for detecting the indicated position based on the output signal is provided,
A coordinate input method for a display, wherein output processing of the camera is detected by a plurality of the address detecting means. 7. A method for inputting coordinates of a display, wherein a position on a screen of an image display device designated by a designation means is detected by a position detection means provided in the image display device, wherein the position detection means comprises a plurality of address detection means. A coordinate input method for a display, wherein the pointing position is detected and processed based on an output signal of the plurality of cameras. 8. A coordinate input method for a display, wherein a position detecting means is provided in an image display device and a position on the screen of the image display device specified by the specifying means is detected. A method for inputting coordinates of a display, comprising performing detection processing. 9. A method for inputting coordinates of a display, wherein a position detecting means is provided in an image display device and a position on a screen of the image display device indicated by an instruction means is detected. A coordinate input method for a display, wherein a shadow is used as an instruction input. 10. A method for inputting coordinates of a display, wherein a position detecting means is provided in an image display device and a position on a screen of the image display device specified by an instruction means is detected. A first region and a second region, and at least the first region (or the second region) is the second region.
A coordinate input method for a display, wherein the position detection accuracy of the position detecting means is improved by including a part of a region (or a first region). 11. A multi-screen display device comprising a plurality of core displays to form one large display screen, wherein an arbitrary position on the screen of the multi-screen display specified by the indicating means is set for each core display. A position detecting means for detecting the position of the multi-screen display by using the address output of the position detecting means as input, and control data based on the result obtained by the address calculating means. A display device comprising means for transmitting to a device connected to the multi-screen display. 12. A display device comprising a position detecting means in the image display device and displaying a specific image pattern on a screen of the image display device designated by the instruction means, wherein the position detection means comprises: A display device, comprising: detecting a difference between a designated position and a position of the specific image pattern, and transmitting control data based on the detected difference amount to a device connected to the image display device. 13. A multi-screen display device comprising a plurality of core displays to form one large display screen, wherein an arbitrary position on the screen of the multi-screen display designated by an instruction means is set to each of the respective positions. Address calculating means for calculating an overall address of the multi-screen type display by inputting an address output output from a position detecting means provided in each of the core displays, and control data based on a result obtained by the address calculating means 2. A display device, comprising: means for generating drawing data according to (1); and a video synthesizing device for synthesizing a video signal of a device input to each core display with the drawing data and displaying the synthesized data on the core display. 14. A display device wherein the position on the screen of the image display device designated by the designation means is detected by position detection means provided in the image display device. Address detection means for detecting the indicated position based on the output signal is provided,
A display device, wherein the output signal of the camera is detected by a plurality of the address detecting means. 15. A display device in which a position on a screen of an image display device designated by a designation device is detected by a position detection device provided in the image display device. A display device for detecting a designated position based on an output signal of the camera in correspondence with each of the plurality of cameras. 16. A display device comprising a position detecting means provided in an image display device and detecting a position on a screen of the image display device indicated by an instruction means, wherein a plurality of designated positions are detected by the position detecting means. A display device, wherein a detection process is performed. 17. A display apparatus comprising a position detecting means provided in an image display device and detecting a position on a screen of the image display device designated by a designation means, wherein the position detection means comprises A display device, wherein a shadow is used as an instruction input. 18. A display device in which a position detecting means is provided in an image display device to detect a position on a screen of the image display device designated by a designating means, wherein a position detecting area of the position detecting means has a position detecting area. A first region and a second region, and at least the first region (or the second region) is the second region.
A display device comprising a part of a region (or a first region) to improve the position detection accuracy of the position detecting means.