JP2003204531A - Method for switching display and display apparatus in two-way interactive system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display switching method or the like for relaxing a mental tension at display switching in a two-way interactive system for remote interaction. <P>SOLUTION: In the display switching mode, a notice mode where start of display switching is notified and a transit mode where a final switching image is displayed after confirmation of switching while stepwise changing a displayed image are sequentially performed as display switching operations between a before-switching image and after-switching image in a display section (21). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display switching method and a display device in a two-way interactive system which realizes remote dialogue via a display device connected by a predetermined transmission means.

[0002]

2. Description of the Related Art In recent years, a two-way interactive system has been constructed which realizes a remote dialog for transmitting and receiving text data and video data between remote sites via transmission means such as English conversation learning and counseling. In such a remote location dialogue, not only text data and the image of the other party's interlocutor are exchanged, but also more advanced in the state where the interlocutors indirectly see each other through the image of the other party's interlocutor. As a system for realizing a dialogue, for example, Japanese Patent No. 3074677 proposes a two-way dialogue system that enables a remote dialogue in a line-of-sight state.

[0003]

DISCLOSURE OF THE INVENTION The inventor has found the following problems as a result of examining conventional display methods. That is, in the conventional interactive interactive system that realizes a remote dialogue, screen switching is performed at the start of dialogue, during dialogue, the screen of the other party's interlocutor, an explanatory diagram, the generation of a character board, etc. to switch between different display patterns. When the screen is actually switched in the remote dialogue, the inventor may be surprised or nervous about the appearance of the display windows such as the image of the interlocutor, the explanatory diagram, and the character board that are generated in an instant. The experiment revealed.

In a normal face-to-face dialogue, since the behavior of the interlocutor can be seen, the situation in which the interlocutor faces an unpredictable situation as described above does not occur, but the behavior of the interlocutor can be predicted directly. In addition, in a two-way interactive system in which a dialogue is indirectly performed via a display device, switching the display screen accompanying the progress of the dialogue is a psychological obstacle to the smooth progress of the dialogue. There was a problem.

The present invention has been made to solve the above-mentioned problems, and in a two-way interactive system which realizes remote dialogue via a display device connected by a transmission means, a display switching is performed. The present invention relates to a display switching method, a display device, a computer program for executing the display switching method, and a recording medium in which the computer program is recorded, which reduces psychological tension and enables sufficient psychological preparation for a switched screen. is there.

[0006]

SUMMARY OF THE INVENTION The present invention utilizes a display device connected by a predetermined transmission means, and is a bidirectional system for realizing remote communication via multimedia such as character data, video data, and audio data. The present invention relates to a display switching method for enabling switching of different display patterns in an interactive system without giving psychological tension. Specifically, the display switching method is such that, as a display switching operation in a display device, at least two display modes, that is, a notification mode and a transition mode are sequentially performed before a final switching screen is displayed, so that a sudden screen change is performed. To avoid. The notification mode is a stimulus of sound (including voice) or video that notifies the start of the display switching, and the transition mode displays the switching notice pattern while changing at least one of the size and the design step by step. The state of continuous change. This gradual change in design also includes a change from light to dark colors.

In the display switching method according to the present invention, the transition start timing to the notification mode is, for example, when a call is received from the other party's interlocutor via the transmission means. Occasionally, in the transition mode, the switching confirmation may be performed after the switching advance notice pattern is displayed, and the change advance notice pattern in which the size and the like are changed in stages includes character data, video data, voice data, etc. which are recorded in advance in the database etc. Preferably, it is multimedia data of. In addition,
The switching notice pattern may be registered on either the interlocutor side or the partner interlocutor side. In the case where the interlocutor side is registered in advance, the switching notice pattern registered in advance by the other interlocutor side is received by the interlocutor side via the transmission means.

The display device according to the present invention is applied to a two-way interactive system which realizes a remote dialogue by transmitting and receiving the image of the interlocutors on the other side through the transmitting means.
Specifically, the display device includes a display unit such as a monitor and a control unit that enables display switching as described above.

As a display switching operation on the display unit, the control means sequentially executes the above-mentioned notification mode and transition mode before displaying the final switching screen. The notification mode is a display for notifying the start of display switching, and the transition mode displays the switching advance notice pattern while changing its size stepwise. In the transition mode, after the switching notice pattern is displayed, the display switching is confirmed to reduce the psychological burden on the interlocutor. Note that the control means shifts to the notification mode as a display switching operation when an incoming call is received from the interlocutor on the other side via the transmission means.

The display device according to the present invention may further include a database in which multimedia data such as character data, video data, and audio data is stored as the switching notice pattern displayed in the transition mode. By using the data registered by the interlocutor in advance, the psychological stress associated with the display change of the switching notice pattern is effectively reduced.

The display switching method as described above is
The program may be a program executed by a computer or the like, and in this case, the program may be distributed via a network whether wired or wireless, and a CD,
It may be stored in a recording medium such as a DVD or a flash memory.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a video editing system according to the present invention will be described in detail below with reference to FIGS. In the description of the drawings, the same parts will be denoted by the same reference symbols and redundant description will be omitted.

A display switching method according to the present invention and a display device for implementing the method realize a remote dialogue via a display device connected via a predetermined transmission means. For example, it is described in Japanese Patent No. 3074477. It is adaptable to a two-way interactive system.

First, the bidirectional interactive system to which the display switching method and the display device for implementing the display switching method are applicable will be described. This interactive interactive system is a system that realizes remote dialogue in a state where the line-of-sight matches, but the display switching method and the display device that realizes the same have a configuration in which the line-of-sight cannot be matched between the interlocutors. It is also applicable to a two-way interactive system capable of simply transmitting and receiving text data and image data.

FIG. 1 is a logical configuration diagram showing an entire interactive interactive system that enables line-of-sight matching between interlocutors at remote locations. This system realizes a two-way dialogue between an interlocutor 3A (first interlocutor) at point A (first point) and an interlocutor 3B (second interlocutor) at point B (second point). It is a system that does. In particular, this system is a counseling system that establishes intimate relationships of trust even with interlocutors in remote areas and enables close communication, and a system that aims at home learning. , Is supposed to be a counselor such as a psychologist. Therefore, this system has various functions and configurations so that these counselors can provide information necessary for counseling and an ideal counseling environment.

Specifically, at the point A, (a) a chair 4A on which an interlocutor 3A (for example, a counselor) sits, and (b)
The table 2A to which the interlocutor 3A faces, and (c) the transmission means 2
A terminal device 20A equipped with a mechanism for matching the lines of sight between the interlocutors via 7 is installed. On the other hand, at the point B, (a) a chair 4B on which an interlocutor 3B (for example, a client who receives counseling) sits, (b) a table 2B to which the interlocutor 3B faces, and (c) an inter-interactive person via the transmission means 27 The terminal device 20B having a mechanism for matching the lines of sight of Here, the transmission means 27 enables transmission / reception of image information and audio information between the terminal device 20A at the point A and the terminal device 20B at the point B, so that the optical fiber transmission line 31 that enables large-capacity transmission. (Main transmission line)
And a satellite communication transmission line 32 (a backup transmission line) and the like. The transmission means 27 may be wired or wireless. In addition, the transmission means includes a network such as a telephone line network that has already been installed, and an electronic bulletin board system (BBS: Bulletin Boar) equipped with various databases.
d System) is also included.

At point A, the chair 4A described above functions to define the position of the interlocutor 3A. This chair 4A is preferably fixed in order to keep a constant distance from the display unit 21A of the terminal device 20A. However, even if the chair 4A is not fixed, the chair 4A can be installed by installing the table 2A on the interlocutor 3A and the display unit 21A.
It becomes possible to maintain a constant distance from the display unit 21A (the fact that the existence of the table 2A serves as a reference for the psychological distance of the interlocutor 3A has been confirmed). The configuration of the terminal device 20B at the point B where the other party's interlocutor 3B (for example, a person who receives counseling) is the same.

At the point A, the terminal device 20A is (1)
A monitor TV arranged on the table 2A for displaying the image of the interlocutor 3B based on the image information transmitted from the terminal device 20B at the point B via the transmission means 27.
A display unit 21A provided with 1A, (2) an image pickup unit 6A for taking in the image of the interlocutor 3A picked up by the CCD camera 5A as image information, and transmitting it to the terminal device 20B at the point B, (3 ) A voice output unit 23A for outputting the voice of the interlocutor 3B based on the voice information transmitted from the terminal device 20B at the point B via the transmission means 27.
(Speaker), and (4) a voice input unit 24A (microphone) for collecting the voice of the interlocutor 3A as voice information and transmitting it to the terminal device 20B at the point B. In addition, this system, as a counseling system, realizes more detailed communication.
Input a character or a graphic, display the input character or graphic on the display unit 21A, and transmit the character or graphic information to the terminal device 20B at the point B as a character or graphic information (keyboard, pointing, (Device, interface such as a touch panel), and (6) a video processing device 26A provided between each of the above-described components and the transmission means 27 and performing signal processing, transmission control, video data editing work, and the like. The terminal device 20B at the point B also
It is configured similarly to the terminal device 20A at the point A described above.

Further, the terminal devices 20 at the points A and B
In A and 20B, the configurations of the imaging devices 600A and 600B (imaging means) will be described. For convenience of description, when referring to components common to the terminal devices 20A and 20B at points A and B, for example, the imaging device 60
The description will be made by omitting the letters A and B that distinguish each point like 0. In addition, unless specifically described, the terminal device 20A at the point A is described in principle, and the terminal device 20 at the point B having a common configuration is described.
Overlapping description of B is omitted.

The image pickup device 600 includes a microminiature CCD camera 5 (5A) as an image pickup unit, and a support mechanism 10 (FIG. 2) for installing the CCD camera 5 at a predetermined position in a supported state.
Reference unit) and an image pickup unit 6 (6A) for controlling the CCD camera 5. The monitor TV 1 (1A) is placed on the table 2 (2A), and the interlocutor 3
(3A) is a chair 4 (4) provided with a height adjusting mechanism 40 (40A) placed at a distance L (m) from the monitor TV 1.
Sitting in A). This distance L (LA) is set to 0.5 m or more and 5 m or less. An outer diameter of 20 mm or less and a length of about 100 mm between the interlocutor 3 and the monitor TV 1 to be photographed.
A cylindrical microminiature CCD camera 5 is provided. Further, the CCD camera 5 is installed so that its imaging direction is directed to the interlocutor 3 who is imaged. Then, the image of the interlocutor 3 imaged by the camera 5 is transmitted as image information from the imaging unit 6 to the other interlocutor side (transmitted to the terminal device 20B at the point B via the transmission means 27).
Depending on the interlocutor, the space between the display unit 21 and the interlocutor may be weakened. Therefore, in order to cope with such a situation, it is preferable that the CCD camera 5 has a deep focal depth.

Next, a specific installation position of the microminiature CCD camera 5 will be described with reference to FIG.

First, the image pickup unit 6 of the image pickup apparatus 600 is installed on the display section 21 for displaying the transmitted image of the other interlocutor. An image of the interlocutor himself / herself taken by the camera 5 is captured in the body of the imaging unit 6 (captured by the imaging unit 6 via the camera cable 50)
In addition to the changeover switch 6a, various adjustment switches 6b are provided for switching between the display of 1) and the display of the transmitted image of the interlocutor 3B. The switch 210 includes a power switch for turning on / off the power of the monitor TV 1. The CCD camera 5 is installed by a support mechanism 10 (robot arm) at a predetermined position in front of the monitor screen 8 on which the transmitted image 9 of the interlocutor 3B is displayed. The monitor screen 8 is a screen of 4 inches or more and about 40 inches.

Specifically, the CCD camera 5 is located at a position w (cm) forward from the monitor screen 8 and the monitor screen 8
It is arranged near the head 9a of the interlocutor image 9 displayed in FIG.
The central axis of the cylindrical CCD camera 5 is located at a position h (cm) above the eye position of the interlocutor image 9 shown by the dotted line.

As described above, since the microminiature CCD camera 5 is located near the head above the eye position of the interlocutor image 9 displayed on the screen 8 of the large monitor TV 1, it is special for bidirectional conversation. No trouble will occur. For example, the CCD camera 5 is provided above the eye position (the position shown by the dotted line in the figure) of the interlocutor image 9 displayed on the screen 8 at h = about 10 (cm), and between the monitor TV 1 and the interlocutor 3. In the case of the system configuration in which the distance L is set to about 2.5 (m), the parallax angle is 2.3 °.
It is possible to sufficiently fall below the detection limit parallax angle of 3 ° (the interval w between the monitor screen 8 and the CCD camera 5 is 10 (c
Even if there is about m), there is no particular effect on the variation of the parallax angle). That is, if the eyes of the other party (the eyes of the image of the other interlocutor 3B displayed on the monitor screen 8) can be clearly seen at the time of line-of-sight matching, even if the microminiature camera 5 is provided near the head, the monitor It has been confirmed that if the screen 8 of the TV 1 is large, there is almost no hindrance to the interactive dialogue. As a result of the experiment, the size of this screen 8 is 35 cm in width and 26 cm in height.
It has also been confirmed that good two-way dialogue can be realized if the size is at least a certain level. It should be noted that if mutual interlocutors are acquaintances, there is a result that there is a tendency that there are few psychological obstacles even if the size of the screen is small, and it is advisable to properly use the screen size according to the application.

Further, the parallax angle will be described with reference to FIG. In this specification, the parallax angle means, as shown in FIG. 3, the line of sight of the interlocutor 3 to be photographed, which is directed to the interlocutor image 9 displayed on the monitor screen 8, and the direction of the CCD camera 5. The angle θ formed by the line of sight of the interlocutor 3 is defined. In other words, it means the shift angle of the installation position of the CCD camera 5 with respect to the line of sight of the interlocutor 3. In addition, the line-of-sight matching here means the 4th Japan Electrical Engineers Union Meeting (N)
o. 1998), it means that the unnaturalness due to the installation position of the CCD camera 5 is below the allowable limit. Quantitatively, the parallax angle is 4.5 ° or less in the left and right direction (both temple sides of the image 9 with respect to the eye center A of the interlocutor image 9), and 12 ° directly above (with respect to the image center A, The head 9b side of the image 9) and 8 ° below (the body side of the image 9 with respect to the image center A) or less are within the line-of-sight matching range. Of course, the smaller the parallax angle, the better, and the detection limit is 3 ° or less in the horizontal and vertical directions. Therefore, the area in which the CCD camera 5 can be installed is the conical area shown in FIG. In addition,
This conical area is the center point A of the interlocutor image 9 displayed on the monitor screen 8 and the eye 30 of the interlocutor 3 (in this embodiment, the center of both eyes of the interlocutor image 9 is the center point of the interlocutor image 9). Defined as A), the line of sight 31 of the interlocutor 3 connecting
It is defined by the line-of-sight matching region 9b on the monitor screen 8 and the position of the eye 30 of the interlocutor 3 when the monitor is separated by a predetermined distance L (m).

The display switching method and the display device for implementing the same according to the present invention typically include the first interlocutor 3A and the second interlocutor 3A in a state in which the lines of sight can coincide with each other by the mechanism as described above.
It is applied to a system in which a remote dialogue is performed while switching and displaying images and messages between the interlocutors 3B.

FIG. 5 is a diagram showing a schematic configuration of the display device according to the present invention. This display device includes a display unit 21 such as a monitor and a video processing unit 26 (corresponding to the video processing devices 26A and 26B in the bidirectional interactive system shown in FIG. 1).
An external recording device 700 and a pointing device 800 such as a mouse. Particularly, the video processing unit 26 receives the image information from the image pickup unit 6 included in the image pickup unit and transmits / receives the image information of the other party's interlocutor via the transmission unit 27 (in the figure, I /
O), and a control means 263 for sequentially controlling the notification mode and the transition mode as a display switching operation, and storing character data, video data, etc. prepared in advance by the interlocutor himself to be displayed in the notification mode or the transition mode. A database 262 (D / B in the figure) for storing, a drawing unit 264 for displaying a predetermined pattern on the display unit 21 according to an instruction of the control unit 263, and a pointing device 8 such as a mouse.
A data input / output unit 265 (I / O in the figure) that enables the acquisition of position information from the 00 and the data exchange with the external recording device 700. The external recording device 700
Includes, for example, a magnetic tape, a CD, an optical disk, a hard disk, a DVD, a flash memory and the like.

The notification mode is a stimulus of sound (including voice) or video to notify the start of the display switching, and the transition mode changes the at least one of the size and the design step by step to notify the switching notice pattern. The state of continuous change that is displayed. This gradual change in design also includes a change from light to dark colors.
Although the starting point of the transition mode is also considered to be the notification mode, the notification mode includes sound stimuli and video stimuli.After such notification mode, the transition mode is entered, and the actual standby state, post-switching state, etc. Proceed to. For example, in the notification mode, for one second, the displayed magic lamp pattern emits a timbre and a stimulating sound and vibrates the pattern. Next, a balloon picture (display pattern) may be displayed together with the sound effect of "shoes" for 2 seconds. The sound effect “shoes” may also be gradually increased or changed in association with the balloon picture. The name of the other party's interlocutor may be displayed in characters in the notification mode. Also, the size of the balloon picture is limited to the user (interactive person).
It is preferable to be able to set it according to the usability. This is because some people are satisfied with a small window display of 2 to 3 cm square and some people desire a large window display of about 5 to 10 cm square. It should be noted that confirmation of display switching is more important before the start of the dialogue. On the other hand, during the dialogue, it is preferable that the notification mode is set to 1 second and the transition mode is set to about 2 seconds to smoothly switch to the switching screen.

Next, a specific display switching operation (display switching method according to the present invention) in the video processing unit 26 will be described with reference to the flowchart of FIG. Note that the following display switching operation will be described as a display switching operation in the bidirectional interactive system shown in FIG.

First, the control means 263 sends the I / O 2 to the other-party interlocutor image data transmitted via the transmission means 27.
When 61 is received (step ST10: confirmation of incoming call), the display mode is changed to the notification mode (step ST20). This notification mode is performed by changing the display state of the alarm pattern 810 displayed on the screen 8a of the display unit 21, for example, as shown in FIG. 7, and is 1 second or more, preferably about 2 seconds. Is displayed.
Note that the window 8a such as a character board and a word processor input screen is displayed on the screen 8a until the notification mode is entered. Although the alarm pattern 810 shown in FIG. 7 is a magic lamp, it can be easily animated by blowing out air, water, fountain, trumpet, trombone, etc., vibrating, or partially moving. The character pattern is not particularly limited as long as it can be displayed. For example, in this embodiment, as a notification mode, a magic lamp-shaped alarm pattern 810 is displayed to vibrate.

Then, the control means 263 confirms the arrival of the display screen switching request from the other interlocutor (step ST
10) The display control is shifted to the notification mode (step ST20). In this notification mode, the interlocutor is informed of switching the display by vibrating the alarm pattern 810 (magic lamp) displayed on the screen 8a on which the character board or the window 800a for word processor input is displayed in advance. In this notification mode, the alarm pattern 810 may be rocked, the lid may be opened or closed, and the animation may be changed (or blinked).

After the notification mode as described above is performed for about 2 seconds, the control means 263 shifts the display control to the shift mode (step ST30). In this transition mode, the switching notice pattern registered in advance in the D / B 262 by the interlocutor is read out, and the drawing unit 264 causes the display unit 21 to read out the switching notice while the control unit 263 instructs the size change. Display the pattern.

FIG. 8 is a diagram showing a display example of a switching notice pattern displayed in the above-mentioned transition mode, and is assumed when switching from the character board or word processing input window display to the display of the partner type interlocutor image. There is. In the initial stage of the transition mode, as shown in FIG. 8A, the screen 8b of the display unit 21 displays a character board or a word processing input window 800a and an alarm pattern 810. Character data 820 registered in advance in the D / B 262 as a pattern
(The registered name of the other party's interlocutor of the data transmission source) is displayed. In this case, an animation may be displayed while changing the size of the switching notice pattern 820 step by step. Then, as shown in FIG. 8B, the image of the other party's interlocutor 830 registered in advance as the switching notice pattern is changed. In this case as well, on the screen 8c, a character board, a window 800a for word processor input, and an alarm pattern 810 are displayed. From this alarm pattern 810, the partner dialogue image 830 registered in advance in the D / B 262 is gradually enlarged and displayed while the size is changed stepwise.

At the final stage of the above-mentioned transition mode, the control means 263 confirms the interchanging of the display switching (step ST40). FIG. 9 shows a screen 8d for confirming display switching with respect to the interlocutor. Even in this state, the window 800a is displayed on the screen 8d, but the confirmation is made in the image of the interlocutor 840 (video data registered in advance in the D / B 262) displayed with the alarm pattern 810 as the base point. A button pattern 840a is displayed. The interlocutor uses this button pattern 840a.
By clicking with a pointing device 800 such as a mouse, the user decides whether to switch the display. The confirmation button pattern 840a
The display transition mode is preferably executed for about 3 seconds.

Here, the interlocutor selects the button pattern 840a.
If you click to approve the display switching,
As shown in (a), the image of the other party's interlocutor 800b transmitted via the transmission means 27 is displayed on the screen 8e. On the other hand, when the interlocutor clicks the button pattern 840a and refuses to switch the display, FIG.
As shown in, the switching notice pattern 850 (the registered image of the interlocutor on the other side) displayed on the screen 8f is reduced in size and displayed, and the display of the switching notice pattern is finally ended. (Return to step ST10).

The means for realizing the line-of-sight matching described in this specification is an example, and is, for example, Japanese Patent No. 3074.
As shown in No. 678, OPTRONICS (1999), No. 3, pp.134-139, a CCD may be embedded in the monitor, or another line-of-sight matching method using a half mirror may be adopted.

[0037]

As described above, according to the present invention, as the display switching operation, there are at least the notification mode for notifying the start of the display switching and the transition mode for gradually changing the size of the displayed pattern. Perform sequentially. As a result, there is an effect that a sudden screen change is avoided before and after the display switching, and the interlocutor can proceed with the dialogue without receiving psychological stress.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a two-way interactive system that realizes line-of-sight matching between remote places via transmission means.

FIG. 2 is a diagram showing the image pickup device shown in FIG. 1, and a diagram for explaining a method of installing a CCD camera for line-of-sight matching.

FIG. 3 is a diagram illustrating a parallax angle.

FIG. 4 is a diagram showing an area where a CCD camera is to be installed.

FIG. 5 is a diagram showing a configuration of a display device according to the present invention.

FIG. 6 is a flowchart for explaining a partial operation of the display method according to the present invention (until display switching is completed).

FIG. 7 is a diagram showing an example of a notification mode before display switching of the display method according to the present invention.

FIG. 8 is a diagram showing an example of a transition mode of display switching in the display method according to the present invention.

FIG. 9 is a diagram showing a display switching confirmation screen in the display method according to the present invention.

FIG. 10 is a diagram showing a state after switching the display and ending the switching screen in the display method according to the present invention.

[Explanation of symbols]

21 (21A, 21B) ... Display unit, 3 (3A, 3B) ...
Interlocutors A, B, 5A, 5B ... CCD camera, 6 (6A,
6B) ... Imaging unit, 600 (600A, 600B)
... image pickup device, 26 (26A, 26B) ... image processing device,
262 ... D / B, 263 ... Control means, 800 ... Mouse (pointing device).

Claims (10)

[Claims] 1. A display switching method in a two-way interactive system that realizes remote dialogue via a display device connected by a predetermined transmission means, wherein a display screen switching operation in the display device comprises:
Before displaying the final switching screen, the notification mode for notifying the start of the display switching and the transition mode for displaying the switching notice pattern while changing at least one of the size and the design step by step are sequentially performed. A display switching method in a two-way interactive system. 2. The display switching method in a two-way interactive system according to claim 1, wherein in the transition mode, confirmation of display switching is performed after the switching advance notice pattern is displayed. 3. The display switching in the two-way interactive system according to claim 1, wherein the notification mode is entered by confirming an incoming call from the other party's interlocutor via the transmission means. Method. 4. In the transition mode, the switching notice pattern registered in advance on the interlocutor side or the interlocutor side is displayed on the display device while changing its size stepwise. A display switching method in the bidirectional interactive system according to claim 1. 5. A display device applied to a two-way interactive system that realizes remote dialogue by transmitting and receiving images of the other party's interlocutors via a predetermined transmission means, for displaying a predetermined pattern. As a switching operation of the display unit of the display unit and the display screen of the display unit, before the final switching screen is displayed, the notification mode for notifying the start of the display switching and the size of the switching advance notice pattern are gradually changed. A display device in a two-way interactive system, including a control means for sequentially performing a transition mode for displaying while displaying. 6. The display device in a two-way interactive system according to claim 5, wherein the control means confirms display switching after the switching advance notice pattern is displayed in the transition mode. 7. The two-way dialogue according to claim 5, wherein the control means shifts to the notification mode by confirming an incoming call from the other interlocutor via the transmission means. Device in the mold system. 8. The database according to claim 5, further comprising a database that stores switching notice patterns that are displayed on the display unit stepwise in the transition mode.
In the two-way interactive system according to any one of 9. A computer program for executing the method according to claim 1 by a computer. 10. A recording medium on which a computer program for executing the method according to any one of claims 1 to 4 is recorded by a computer.