JPH06118923A - Simultaneous display device for plural different superimposed images - Google Patents

Abstract

PURPOSE:To display plural different superimposed images at the same time by providing a superimposed image signal generating means which generates plural different image signals to be superimposed. CONSTITUTION:A video image signal including a superimposed computer image is inputted from a personal computer 20 to a frame memory 30. Then a video device 10 sends out another video signal to be displayed on a display television 40 under the control of the personal computer 20. At this time, the personal computer 20 generates the RGB signal of a 2nd computer image to be superimposed on a 2nd video image and sends it out to the display television 40 with a superimposing function. Then the display television 40 with the superimposing function superimposes the 2nd computer image on the 2nd video image signal and displays them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneous display device for simultaneously displaying superimposed images on a plurality of image display devices.

[0002]

2. Description of the Related Art Currently, a single video image output from a device for generating a video image signal, such as a video disc device, a video deck, a video camera, and a single image generated by one personal computer are superimposed. In addition, the display is performed on one display device under the control of one personal computer.

Further, each of a plurality of video images output from a device for generating a video image signal such as a video disc device, a video deck, a video camera, etc. is displayed by a plurality of personal computers under the control of a single personal computer. It is also being displayed on the device at the same time.

[0004]

However, in the recent information society, in order to visually convey various kinds of information as easily as possible, various kinds of image information are displayed with various explanatory symbols and explanatory sentences. It is thought that the demand for things is increasing. It is considered that such a demand may not be sufficiently met by the current display method as described above.

[0005] For example, a simple and inexpensive device in which different explanatory texts and explanatory symbols are added to the screens of different video images can be simultaneously displayed on different display devices under the control of one control device. Does not currently exist.
If a simple and inexpensive device capable of such a thing is developed, the current database system etc. can be used as a more visual information transmission means and also as a more effective educational and learning means. Therefore, it is considered that the utility value of the database system etc. can be further enhanced.

An object of the present invention is to provide a simultaneous display device which can meet the demand in the information society as described above.

[0007]

A simultaneous display device according to the present invention comprises a video image output means capable of outputting a video image,
It is provided with a plurality of video image display means for displaying video images, a superimpose image signal generation means for generating image signals for a plurality of different superimposes, a frame memory means, and a control means. The control means should output the video image signal for the first screen to be displayed from the video image output means, and superimpose on the first screen from the superimpose image signal generation means. A first superimpose image signal is generated, and an image signal for the first screen and the first superimpose image signal are combined to superimpose the first image signal on the frame. Storing in a memory means and then outputting a video image signal for a second screen to be displayed from said video image output means, and A second superimpose image signal different from the first superimpose image signal to be superimposed on the second screen is generated from the superimpose image signal generating means to generate a second superimpose image signal on the second screen. And the second superimposing image signal are combined to form a second superimposed superimposing image signal, and the first image is displayed on one of the plurality of video image display means. It is possible to perform control such that the screen based on the image signal is displayed, and at the same time, the screen based on the second image signal is displayed on another one of the plurality of video image display means. Multiple screens can be displayed simultaneously.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a block diagram schematically showing the structure of a simultaneous display device as an embodiment of the present invention. The simultaneous display device of this embodiment is an example in which a personal computer 20 with a superimpose function and a display television 40 with a superimpose function are used.

As shown in FIG. 1, a video disc device,
A device 10 for generating a video image signal such as a video deck or a video camera is controlled by a personal computer 20 with a superimposing function via a control signal cable 1. The video image signal output from the video device 10 is divided into two, and one is sent to the display television 40 and the other is sent to the personal computer 20 through the video signal cable 2.

From the personal computer 20, the RGB signals of the image generated by the personal computer 20 are sent to the display television 40 through the RGB signal cable 3. From the personal computer 20,
A video image signal obtained by superimposing the RGB signal of the image generated by the personal computer 20 on the video signal sent from the video device 10 is output and sent to the frame memory 30 through the video signal cable 4.

The frame memory 30 is controlled by the personal computer 20 via the control signal cable 5 and stores and outputs the input video image signal. From the frame memory 30, a video image signal in which RGB signals are superimposed is sent from the personal computer 20 and is sent to the television monitor 50 through the video signal cable 6.

Next, the operation of the simultaneous display device having the configuration shown in FIG. 1 will be described. Under the control of the personal computer 20, the video device 10 first sets the television monitor 5
The video image signal of the image to be displayed at 0 is transmitted. The transmitted video image signal is input to the personal computer 20. The personal computer 20 generates an RGB signal of a computer image to be superimposed and displayed on the video image, converts the RGB signal into a video signal, and
Superimpose on the video signal described above.

The video image signal on which the computer image is superimposed in this way is sent from the personal computer 20 and input to the frame memory 30. The frame memory 30 is the personal computer 2
Under the control from 0, the video image signal in which the above-mentioned computer image is superimposed is stored, and the stored video image signal is sent to the television monitor 50.

As described above, one video image sent from the video device 10 and one computer image generated by the personal computer 20 are displayed on the television monitor 50. This video continues to be displayed on the television monitor 50 unless the state stored and sent to the frame memory 30 is released under the control of the personal computer 20.

Next, the video device 10 sends a video image signal of another image to be displayed on the display television (another monitor) 40 under the control of the personal computer 20. This second video image signal is input to the display television 40 with the superimpose function. At this point, the personal computer 20 generates an RGB signal of another (second) computer image to be displayed in superimposition on the above-mentioned second video image, and the display television with the superimpose function is generated. 40. The display television 40 with the superimpose function superimposes the second computer image on the above-mentioned second video image signal and displays the image.

As described above, the television monitor 50 connected to the frame memory 30 is displaying the video in which the first computer image is superimposed on the first video image, and at the same time, the display with the superimposing function. A state in which an image in which the second computer image is superimposed on the second video image is displayed on the television 40 is realized. At this time, the first computer image and 2
By making the second computer image different,
Images to which different superimposes are added are displayed at the same time. The first computer image and the second computer image are both generated by the same personal computer 20.

FIG. 2 is a block diagram schematically showing the structure of a simultaneous display device as another embodiment of the present invention. The simultaneous display device of this embodiment is an example in which a frame memory 70 with a superimpose function and a signal converter 80 are used.

As shown in FIG. 2, a video disc device,
A device 10 for generating a video image signal such as a video deck or a video camera is controlled by a personal computer 20 via a control signal cable 1. Video device 10
The video image signal output from is sent to the frame memory 70 with a superimpose function through the video signal cable 7 and converted into an RGB signal.

The RGB signal of the image generated by the personal computer 20 is sent to the frame memory 70 with a superimposing function, superposed on the RGB signal obtained by converting the video image signal described above, and output as an RGB signal. . The RGB signal output from the frame memory 70 is divided into two, and one is sent to the display 60 of the computer and the other is sent to the signal converter 80 through the RGB signal cable 8.

The signal converter 80 converts the input RGB signal into a video image signal and sends it to the frame memory 30 through the video signal cable 9. The frame memory 30 is controlled by the personal computer 20 via the control signal cable 5 and stores and outputs the input video image signal. The video image signal output from the frame memory 30 is sent to the television monitor 50 through the video signal cable 6.

Next, the operation of the simultaneous display device having the configuration shown in FIG. 2 will be described. Under control of the personal computer 20, the video device 10 sends out a video image signal of the first image to be displayed on the television monitor 50. This first video image signal is input to the frame memory 70 with a superimpose function.

The personal computer 20 has the above-mentioned 1
The RGB signal of the first computer image to be displayed in superimposition on the second video image is generated and sent to the frame memory 70 with the superimpose function. Frame memory with superimpose function 70
Converts the input first video image signal into an RGB signal, superimposes the RGB signal of the input first computer image on the RGB signal, and sends the superimposed signal.

The signal converter 80 uses the above-mentioned RGB signals sent from the frame memory 70 with the superimpose function.
A signal is input, this is converted into a video image signal and transmitted. This video image signal is
It is a video image signal of an image in which a second computer image is superimposed.

Under the control of the personal computer 20, the frame memory 30 stores the video image signal sent from the signal converter 80 and sends the stored video image signal to the television monitor 50. At this point, the first video image on the TV monitor 50
A video image on which the second computer image is superimposed is displayed, and unless the storage of the frame memory 30 is canceled by the control from the personal computer 20, one video image is displayed on the TV monitor 50. The image on which the computer image of the eye is superimposed is continuously displayed.

Next, the video device 10 sends a video image signal of the second image to be displayed on the computer display 60 under the control of the personal computer 20. This second video image signal is input to the frame memory 70 with a superimpose function.

The personal computer 20 has the above-mentioned 2
The RGB signal of the second computer image to be displayed in superimposition on the first video image is generated and sent to the frame memory 70 with the superimpose function.
The frame memory 70 with a superimpose function converts the input second video image signal into an RGB signal, and superimposes the RGB signal of the input second computer image on the RGB signal. , Send. The RGB signals sent from the frame memory 70 are input to the display 60 of the computer, and the display 60 of the computer displays an image in which the second video image is superimposed on the second computer image. It

As described above, the television monitor 50 connected to the frame memory 30 is displaying the video in which the first computer image is superimposed on the first video image, and at the same time, the computer display 60 is displayed.
A state in which an image in which the second computer image is superimposed on the second video image is displayed is realized. At this time, by differentiating the first computer image and the second computer image, images to which different superimposes are added are displayed simultaneously.

In the above-mentioned two embodiments, the case where the image is displayed on the two display devices at the same time is not limited to this, but the present invention is not limited to this, and the frame memory controlled by the personal computer and the frame memory are If the number of connected TV monitors is increased, simultaneous display of three or more video images and a composite image of computer images can be realized by the control of one personal computer, and the present invention includes such a case. It is a thing.

[0030]

According to the present invention, under the control of one personal computer, two different video images generated by one personal computer are superimposed on two different video images. Images can be displayed on two display devices at the same time. What can be achieved with a simple and inexpensive device for combining video images and computer images is
In the future, it can be expected to be applied to database systems, etc. in the form of combining video information, which is expected to have a sharp increase in demand, and other information.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing a configuration of a simultaneous display device as an embodiment of the present invention.

FIG. 2 is a block diagram schematically showing a configuration of a simultaneous display device as another embodiment of the present invention.

[Explanation of symbols]

 10 Video Equipment 20 Personal Computer 30 Frame Memory 40 Display Television 50 Television Monitor 60 Computer Display 70 Frame Memory with Superimpose Function 80 Signal Converter

Claims (3)

[Claims] 1. A simultaneous display device for displaying a plurality of screens with different superimposes, a video image output means capable of outputting a video image, a plurality of video image display means for displaying a video image, and a plurality of different superimposes. For superimposing an image signal for generating an image signal, a frame memory means, and a control means, the control means for displaying the first screen to be displayed from the video image output means. Output an image signal for
Further, a first superimpose image signal to be superimposed is generated on the first screen from the superimpose image signal generating means to generate a video image signal for the first screen and the first superimpose image signal. The superimposing image signal is combined and the superimposed first image signal is stored in the frame memory means, and then the video image signal for the second screen to be displayed is output from the video image output means. And outputting a second superimpose image signal different from the first superimpose image signal to be superimposed on the second screen from the superimpose image signal generating means. A second image superimposed by combining the image signal for the second screen and the second superimposed image signal. A signal is formed to cause one of the plurality of video image display means to display a screen according to the first image signal, and at the same time, another one of the plurality of video image display means is provided with the first image signal. A simultaneous display device characterized by performing control such that a screen is displayed by the image signal of 2. 2. The video image output means is a video disc device, a VCR, or a video camera, and one of the plurality of video image display means is a display television with a superimpose function,
2. Another one of the plurality of video image display means is a television monitor, and the superimpose image signal generating means and the control means are constituted by a personal computer with a superimpose function. The simultaneous display device described. 3. The video image output means is a video disc device, a VCR, or a video camera, and one of the plurality of video image display means is a display of a computer, and the plurality of video image display means. Another one of the means is a television monitor, and the superimpose image signal generating means and the control means are composed of a personal computer, a frame memory with a superimpose function, and a signal converter. 1. The simultaneous display device according to 1.