JPH0349385A - Codisplay type picture telephone system - Google Patents

Abstract

PURPOSE:To simultaneously realize conversation and information retrieval by interlocking and synchronizing picture data files stored in individual terminals remote from each other to display them together with operator's pictures as one body while electronically making conversation through a communication network. CONSTITUTION:When a terminal operator 8 or 9 retrieves a picture, contents of an indicated control signal are transmitted from his telephone and control part 2 to storage picture files 3 in both terminals through a communication network 1. Then, control contents executed in one terminal is simultaneously and synchronously executed in the other terminal. For example, a picture 6 retrieved and outputted from the storage picture file and a real-time operator's face picture 7 are collectively displayed on one display device. Thus, interlocking synchronous retrieval display of picture retrieval and coupling between the interlocking storage picture and real-time face picture communication are realized.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a terminal with an image storage function, and synchronized control in conjunction with the image storage function of a plurality of other terminals via a communication network. This relates to a videophone system that allows for

[Prior art]

BACKGROUND ART Conventionally, videophones, videotex, and the like have been researched and developed as image communication services utilizing digital communication networks, and these services are expected to become widespread in the future.

However, with regard to videophones aimed at face-to-face functionality, not only are users expected to have strict requirements regarding economy and image quality, but also psychological problems from the perspective of human behavior have been pointed out. There are doubts as to whether it will really become widespread.

Furthermore, regarding videotex, which searches the center's image database from a terminal via a communication network, it is disadvantageous in terms of economy and operability compared to providing information in the form of broadcasting, or providing information using printed matter or packaged media. Due to many disadvantages, it has not reached the point of widespread adoption in any country other than France, where devices were distributed free of charge.

[Problem to be solved by the invention]

1) Problems with conventional videophones Conventional videophones aim to realize a face-to-face conversation function by transmitting and receiving images of each other's faces in addition to telephone voice conversation communication.

Regarding the spread of such facial image communication services, the following problems can be considered.

(A) There are doubts about the utility of seeing the other person's face.

According to the results of a survey on the allowable cost (how much people would use it) relative to the effectiveness of facial image communication, it is assumed that telephone charges will increase by at most 20%, and it is questionable whether users will recognize the high utility of facial image communication. .

(B) There is a feeling of resistance to having one's face seen.

Regarding being able to see your face and appearance electronically,
There is a feeling of resistance such as a feeling of invasion of privacy and embarrassment.

Additionally, there are many situations in which a telephone is convenient because you cannot see your face, but there are few situations in which it is convenient because you can see your face.

(C) Image quality is insufficient.

In the case of a videophone call via 64kb/5ISDN, the information is compressed to about 171,000 compared to normal television broadcasting, so the image quality is such that movements and facial expressions are jerky. 1. This creates a very uncomfortable feeling for the user.

2) Problems with conventional Videotex Since Videotex searches an image database stored at a center from the terminal side via a communication network, it has the following essential problems.

(A) The time spent viewing information (communication time) is too long.

While the user is looking for information, a communication line connects the terminal and the center, so communication time is required for the time the user is looking for information, which increases communication costs.

(B) Screen update speed (communication speed) is slow.

The speed at which the image information screen is updated by user operations is
Because the rate is determined by the speed at which information is transferred via a communication line, at a speed of about 64 kb/s, it is not possible to switch image screens as quickly as turning a sheet of paper.

The present invention has been made to solve the above problems.

An object of the present invention is to provide a Kyodo screen phone that integrates the following functions as a new image communication service that aims to support remote persuasion type communication.

(i) Voice conversation communication function (n) Real-time communication function of mutual facial images (iii) Interactive image database (stored image) function located on each terminal (iv) Storage on distributed terminals Function to control the display of images in a linked and synchronized manner via a communication network (v) Linked storage images and real-time communication images (real-time images)
The above and other objects and novel features of the present invention will become clear from the description of this specification and the accompanying drawings. Will.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a means for storing image data in a terminal, a means for searching and extracting the stored terminal image database, and a means for retrieving the contents of a plurality of terminals connected via a communication network. A means for controlling the display of the same screen by linking multiple image databases that share the same information, and synchronizing all connected terminals according to a search control instruction requested from one of the terminals, and controlling the display of the same screen. The communication network consists of means for real-time image communication for human images, and means for displaying the real-time human images and terminal accumulated images that are displayed and output in synchronization and synchronization on one display. While having face-to-face dialogue electronically through
The main feature is that the image data files stored on the individual terminals are linked and synchronized between remotely located terminals, and are displayed together with the person's image.

In addition, in the shared screen telephone system, a means for separating a person part and a background part for a person image received via a communication line, and a terminal storage that is displayed and output in conjunction and synchronization between terminals. The present invention is characterized by having means for replacing the image with an image of a background part separated by one, composing it with a person part, and displaying it as one screen.

In addition, in the common screen telephone system, there is a means for separating a person part and a background part of a person's image from one's side to be sent to a communication partner, and a means for separating a person's image received from a communication partner from one's side. The terminal accumulated images that are displayed and output in conjunction and synchronization between terminals for both human images of
The present invention is characterized by having means for replacing the image of the separated background portion with the image of the person and displaying it as one screen.

[Effect]

According to the above-mentioned method, when a person wants to know some information and takes action, the most familiar method is to ask someone who seems to know the information. Alternatively, when searching for information, it is extremely effective to have support through human interaction. In other words, you can get information and at the same time communicate with each other. Alternatively, the form of obtaining information while communicating through dialogue is considered to be the most compatible, satisfying, and persuasive form of information behavior for humans.

This is also suggested by the fact that, when purchasing goods or in educational situations, the effectiveness of sales and education differs depending on the presence or absence of dialogue between store clerks and customers, teachers and students. Human psychology is thought to provide greater satisfaction and persuasiveness when dialogue and information acquisition can be achieved at the same time.

From this perspective, the present invention provides an image communication service that supports one person's information activities and is compatible with humans by combining a dialogue system (video phone, etc.) and an information search system (videotex, etc.). Rather than being provided separately, the two are integrated to create a system that allows both dialogue and information search to coexist at the same time (combination of face-to-face dialogue function and information search function).

Furthermore, in various human communication activities, what people want to see/show from a distance is not the face image of the conversation partner, but the image of the object of the conversation.

In other words, images of documents for meetings, product sample images for sales, teaching materials and models for education, on-site scenes for reporting, etc. are the target images that are originally useful for image communication services.

In other words, the image information handled by the image communication service is
There are two types:

(b) Real-time original screen image necessary for remote dialogue explanation and persuasion (b) Image of the object that is the subject of dialogue and persuasion From these, it can be seen that the face image and the object image are have different purposes and forms of use. In particular, while face images require real-time communication, object images do not necessarily need to be transmitted in real time, and can be sent in advance and stored in the terminal before conversational communication. Applicable.

Further, although the quality of a face image is acceptable at a level that allows recognition of the other party, high quality is required for an object image.

From this point of view, the present invention handles face images and object images separately as real-time images and stored images, respectively, and furthermore, when displaying image information to the user, real-time face images and stored images are handled separately. By combining both images of the object and presenting them as a unified screen, it is possible to adapt to the characteristics of the stored image and real-time image, and to achieve higher persuasive power (face image). separation/combination of images and object images).

Further, conventional videophones and videotexes are instant (real-time) communication types, and image communication without a storage function at the terminal. However, regarding the object image as pointed out above, before interactive communication.

It is possible to send the information in advance and store it in the terminal.

In other words, by adopting a non-instant communication/terminal storage type,
The following advantages occur and the problems with conventional videophones and Videotex can be solved (non-instantaneous communication/terminal storage type image communication function).

(i) By using non-real-time communication and taking a long communication time, it is possible to present object image information with an image quality comparable to that of television broadcasting even on a 64 kb/s line.

(n) By assuming terminal storage, the time for transmitting the object image and the time for viewing it can be made independent. There is no need for communication costs during the time when viewing the object image.

(in) By assuming terminal storage, the speed at which the screen of the object image is updated does not depend on the communication speed, but can be accelerated to the limit of the access speed of the terminal file, improving operability.

Also, for stored image files stored on the terminal. Access such as information search is normally operated independently and asynchronously for each of the five terminals (users).

However, when viewing an image of an object during dialogue or persuasion between humans, the screen that the other person is viewing is the same as the screen that the other person is viewing.

It is considered necessary that the screen you are viewing matches the screen you are viewing and that the screen update operations are synchronized. So to speak, as if
It is thought to be effective to make people who are far apart gather in the same place and feel as if they are taking turns flipping through a book or image file.

In the present invention, such a function is realized by introducing the following interlocking control for multiple terminal image files distributed over a communication network (interlocking control of stored images). ).

(i) Identity management of stored content (n) Synchronization control of display content on each terminal One embodiment of the present invention will be specifically described below with reference to the drawings.

Note that throughout the description of the embodiments, parts having the same functions are given the same reference numerals, and repeated explanations thereof will be omitted.

[Embodiment 1] FIG. 1 is a diagram for explaining Embodiment 1 of the common screen telephone system of the present invention, in which 1 is a communication network, 2 is a terminal telephone and a control unit, and 3 is a stored image. 4 is a display, 5 is a camera, 6 is an accumulated image displayed on the display, 7 is a real-time face image of the communication partner displayed on the display, and 8.9 is the operator of the terminal.

Next, the operation of the common screen telephone system of the first embodiment will be explained.

First, the 6 communication networks 1 for connecting two common electric screen telephone terminals via the 1 communication network 1 are 64kb/5IsDN,
Or 1.5Mb/s I SDN.

An analog telephone network or the like can be used. The Kyodo screen telephone terminal includes a telephone, a control section 2, and a stored image file 3.
．． Display 4. It consists of a camera 5, etc., and operates as follows.

[1] Voice input using the voice-to-word communication network 1, telephone, and control unit 2;
Voice output and real-time voice signal communication functions allow conversational voice communication between terminal operators 8 and 9.

[2] Face-to-face image communication communication network 1, telephone and control unit 2, display 4, and camera 5 are used to provide one-image input, one-image output, and real-time image signal communication functions to enable communication between terminal operators 8.9. Perform face-to-face communication using images of people's faces.

[3] Searching the terminal image database Using the telephone, the control unit 2, and the stored image file 3,
The terminal operator 8.9 searches for images using the stored image data search function and image output function.

[4] Interlocking control of stored image display 4.1) Identity management of stored contents In order to perform interlocking control of stored image display between multiple common screen telephone terminals, before synchronizing control of display contents in the primary section. , In advance, check and confirm the identity of the stored contents between the connected terminals.

4.2) Synchronization control of display contents When the terminal operator 8.9 performs the image search described in item 3, the contents of the control signal (which control) is transmitted between mutual terminals via communication network 1, and the control content executed on one terminal is simultaneously synchronized and the same content is executed on the other terminal. is executed. With this function, it appears that the same accumulated images are always displayed on both terminals, and the screens appear to be updated at the same time.

[5] A display format in which the image (accumulated image) 6 searched and outputted from the co-electrode surface synthesis control accumulated image file and the real-time human face image are displayed together on one display. In this case, the human face image and the stored image are displayed by splitting the screen, or the human face image is displayed in a format that looks like a small window is opened (multi-window) within the displayed image of the stored image.

By performing such functional operations, it is possible to realize (a) linked synchronous search display of image search, and (b) combination of linked stored images and real-time facial image communication, which is more persuasive than before. Interactive information provision can be implemented.

[Embodiment 2] FIG. 2 is a diagram for explaining the system configuration of a terminal of a common screen telephone according to a second embodiment of the common screen telephone system of the present invention, and reference numeral 11 indicates control using a personal computer. 12 is a touch panel for operation instructions, 13 is a display, 14 is an optical disk for image storage, 15 is an image processing processor, 16
is a data communication control unit, 17 is a camera, and 18 is an image C0D
EC (Coder and Dec.

der: encoder and decoder), 19 is a microphone, 2
0 is a speaker, 21 is an echo canceller, 22 is an audio CODEC 123 is a line control unit, and 24 is a communication line.

Next, the operation of the shared view screen telephone system of the second embodiment will be explained.

First, two common electric screen terminals (hereinafter referred to as "terminals") having the same configuration as in FIG. 2 are connected via the communication line 24 of the communication network.

The common screen telephone system of the second embodiment operates as follows.

[1] Voice communication In order to perform real-time voice conversation communication between two terminals connected via the communication line 24, the voice signal input from the microphone 19 is transmitted to a howling prevention device such as the echo canceller 21. After passing through the audio C0DEC 22, the audio signal is encoded and transmitted from the line control unit 23 to the other party's terminal through the communication line 24.

The audio signal is received by the line control unit 23 through the communication line 24, decoded by the audio CODEC 22, passed through a howling prevention device such as the echo canceller 21, and then output from the speaker.

[2] Face-to-face image communication In order to perform real-time face-to-face image communication between two terminals connected via the communication line 24, the captured image signal is input from the camera 17 to the image C0DEC 18, and the image Communication is encoded and transmitted from the line control unit 23 to the other party terminal through the communication line 24.The image signal sent to the six other party terminals is received by the first line control unit 23 through the communication line 24, and the image C0DEC18 The image is decoded and displayed on the display 13 after being subjected to display screen synthesis processing by the image processing processor 15.

[3] Searching the terminal image database In order to realize the function for the terminal operator to search the image data (stored images) accumulated in the image storage device of the terminal such as the optical disk 14, the operator uses the touch panel 12 etc. Using an input device, instructions for operations such as search and screen change are input, and based on the operation instructions, the control unit 11 controls an image storage device such as an optical disk 14 and retrieves image data (stored images) to be displayed. , and is displayed on the display 13 after being subjected to display screen synthesis processing in the image processing processor 15.

In addition to optical discs, image storage devices for terminals include
Magnetic hard disks, write-once optical disks, magnetic tape devices, etc. can be used.

In addition, the data to be stored is not only images, but also music, audio, text, graphics, etc., which can easily be treated in the same way as images and used for storage, search, and display. Yes, and it is effective.

In addition to touch panels, normal input devices such as keyboards can also be used as search instruction devices.-1 [4] Linked control of stored image display 4.1) Identity management of stored contents Between multiple common screen telephone terminals In order to perform interlocked control of stored image display, the following methods can be used alone or by checking and confirming the sameness of stored contents between connected terminals in advance, before performing synchronized control of display contents described in the next section. In combination, the identity test is performed.

(i) Consistency check of names and version identification numbers (revised version numbers) of stored content on both terminals.

(n) Consistency check of history of revisions (rewrites or additions) to content stored on each other's terminals.

(Foot) Inspecting the identity and consistency of management data (types of individual stored images, identification numbers, storage locations, search keywords, etc.) of the content stored on each terminal.

(iv) The substance of the image data of the content stored on each other's terminals (
Image signal data) identity and consistency inspection.

If the sameness or inconsistency of stored contents is found, interlock control cannot be executed.

However, even in the case of mismatch, interlock control can be executed if the following methods can be used alone or in combination to ensure the sameness of the stored contents.

(a) Excluding or deleting inconsistent data portions from the usage range to limit the usage range and perform interlock control.

(b) Inconsistent data portions are transferred to each other in advance, the inconsistent portions are corrected and updated, and then interlock control is performed.

4.2) Synchronous control of display contents When a terminal operator performs the image search described in item [3] of the second embodiment among a plurality of terminals connected via the communication line 24 of the communication network, the control unit 11 The content of the control signal (what kind of control to perform) is transmitted from one terminal to another via the communication line 24 of the communication network for the stored image file on the optical disk 14 or the like. The control content executed on one side of the terminal is simultaneously and synchronously executed with the same content on the other side of the terminal. This function makes it look like 5
The same accumulated images are always displayed on both terminals, and the screens appear to be updated at the same time.

In such synchronized control of display contents, the following parent-child judgment control procedure is effective as a processing method when control requests are issued simultaneously from a plurality of terminals and conflict with each other.

<1> One terminal (parent terminal) is assigned the role of determining priority and determining conflicts among screen update control requests asynchronously issued from multiple terminals to be linked.

<2> The parent terminal receives control requests issued from other terminals (child terminals), and makes a priority judgment based on these and control requests issued from its own terminal.

<3> After determining the control command to be executed preferentially, the execution command is transmitted to all child terminals.

(4) All child terminals control image display according to the execution command from the parent terminal.

[5] Co-electrode surface synthesis control The image searched and output from the accumulated image file (accumulated image) and the real-time human face image are displayed together on one display as a zero display format. , it is possible to display a person's face image and a stored image by splitting the screen, or to display a person's face image in a format where a small window is opened within the displayed image of the stored image (multi-window). .

[6] Non-real-time image communication function The following methods can be used to transfer image data stored in an image storage file such as the optical disk 14 to the other party's terminal.

(1) Object Transfer This is a method of making a duplicate copy of the image storage file device itself and mailing it. According to this method, copies of small devices such as optical discs can be easily mailed. In this case, the identity of the contents can be guaranteed.

<2> Non-immediate communication transfer The image data to be transferred is selected from among the image data stored in the image storage file, passed through the image processing processor 15, encoded by the image C0DEC 18, and transferred non-immediately over time to the line control unit 23. Transfer from to the other party's device. The other party's terminal receives this data, decodes it using the 1-image C0DEC 18, and records it in the image storage file.

By performing such functional operations, it is possible to realize (a) linked synchronous search display of image search, and (b) combination of linked stored images and real-time facial image communication, which is more persuasive than before. Interactive information provision can be implemented.

[Embodiment 3] FIG. 3 is a diagram for explaining the common screen composition control in the common screen telephone terminal according to the third embodiment of the common screen telephone system of the present invention, and 31 is a background plate; 32 is a person, 33 is a camera, 34 is a transmission control unit, 35 is a communication network, 36 is a reception control unit, 37 is a background extraction/separation unit, 38 is an image storage device, 39 is a screen division/synthesis unit, and 40 is a background replacement/synthesis unit. Department.

In this third embodiment, as a method for integrally and visually displaying a plurality of image information on one screen, the objects of integral display are real-time human face image display and object images stored in the terminal. A method that focuses on a certain point in the display and replaces the background part of a person's face image with an object image for composite display (abbreviation: BAC)
K method) was realized.

In the third embodiment, in order to realize display control using the BACK method, a background plate 31 of a specific color different from the color components of the person is installed in the background of the person 32, and chromakey processing is performed using the color characteristics of the background. , performs background extraction and synthesis.

Next, a description will be given of the public screen composition control operation in the public screen telephone terminal according to the third embodiment.

In FIG. 3, an image of a person 32 positioned in front of a background board 31 of a specific color is captured using a camera 33, encoded by a transmission control unit 34, and transmitted. The transmission information is sent to the other party's terminal via the communication network 35, and is received and decoded by the reception control section 36.

The background extraction and separation unit 37 separates the received human image into a background portion and a human portion based on the characteristics of the background color.
Extracted.

On the other hand, the stored image pulled out as the display target image from the image storage device 38 of the other party's terminal (the image storage section that is synchronously controlled as the target of interlock control) is included in the display image such as the operation menu image. , is prepared as a search image (terminal accumulated image for display) in the screen division and synthesis unit 39.

These are background-separated human images and search images prepared for search and display in the image database (terminal stored images).
are synthesized in the background substitution and synthesis section 40 using specific color substitution processing (chroma key processing), and output as an image for the public screen.

Processing methods for background extraction, separation, replacement, and composition include the chromakey processing method that focuses on color components unique to the background as described above, as well as separation and composition that uses the fact that the brightness of the background is different from the brightness of the person. A separation processing method that uses an infrared camera and uses the difference in temperature between the person and the background, a separation processing method that uses an ultrasonic camera and focuses on the difference in distance between the person and the background from the camera, etc. .

FIG. 4 shows an example of an actual screen for public screen synthesis control using such background processing.

Screen representation of a shared viewing screen using such background processing (BACK method) has the following effective features compared to screen representation using the screen splitting method or multi-window.

<1> A person can move freely around the object image,
You can point it out.

(2) A real-time face image with low image quality is compositely displayed against the background of a stored image with high image quality, and the viewer's viewpoint is drawn to the high-quality background, so that the real-time face image is displayed in a composite manner. You don't have to worry about deterioration in image quality.

3) There is a sense of realism that is integrated with the object image in the background.

[Embodiment 4] FIG. 5 is a diagram for explaining the common screen composition control in the common screen telephone terminal according to the fourth embodiment of the common screen telephone system of the present invention, and 41 is a background plate; 42 is a person, 43 is a camera, 44 is a transmission control unit, 45 is a communication network, 46 is a reception control unit, 47 is a background separation/synthesis unit, 48 is an image storage unit, 49
50 is an interlocking control unit, and 50 is a display. In this fourth embodiment, in addition to the person's face image of the communication partner, the person's own face image is also included in the synthesis control as the person's face image to be subjected to the communal screen synthesis control. I do.

Next, a description will be given of a public screen composition control operation in the public screen telephone terminal according to the fourth embodiment.

In FIG. 5, an image of a person 42 positioned in front of a background board 41 of a specific color is captured using a camera 43, encoded by a transmission control unit 44, and transmitted. The transmission information is sent to the other party's terminal via the first communication network 45, and is sent to the other party's reception control unit 46.
It is received and decoded at Similarly, the person's face image sent from the other party is received by the reception control 46 of one's own terminal and decoded.

On the other hand, both the own face image captured by the camera 43 and the other party's face image received from the other party are input to the background separation and synthesis unit 47 . A background separation/synthesis unit 47 separates and extracts the background portion and the person portion of both of these person images based on the characteristics of the background color.

On the other hand, the image storage unit 48 of the terminal (as a target of interlocking control)
The linked control unit 49 synchronizes the image storage unit 48 of the partner terminal with the image storage unit 48 of the partner terminal), and the background separation and synthesis unit 47 uses the retrieved accumulated image and the background-separated person image as the display target image. , the images are combined using specific color replacement processing (chromakey processing) and displayed as an image for the public screen. FIG. 6 shows an example of such a shared screen composition in which human face images of both the user and the other person are combined with the stored image.

By displaying the facial images of both the communication partner and the user 5 on one screen with the target object image stored in the terminal as the background, an extremely high sense of realism in the dialogue can be achieved. By applying this, people who are far apart can experience the sensation of dancing with the stored images in the background.
It can achieve greater persuasive power by expanding the functions of face-to-face dialogue.

The present invention has been specifically explained above based on examples, but
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

〔Effect of the invention〕

As described above, the present invention has the advantage of providing a highly persuasive interactive communication means that combines human face image communication and a terminal stored image database function.

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining a first embodiment of the common screen telephone system of the present invention, and FIG. 2 is a diagram for explaining a common screen telephone according to a second embodiment of the common screen telephone system of the present invention. A diagram for explaining the system composition of a terminal. FIG. 3 is a diagram for explaining the public screen composition control in the public screen telephone terminal according to the third embodiment of the public screen telephone system of the present invention. FIG. 5 is a diagram showing an example of an actual screen for screen composition control. . FIG. 6 is a diagram illustrating an example of a shared screen composition in which facial images of both one's own face and the other's face are combined with a stored image. In the figure, 1... communication network, 2... terminal telephone and control unit, 3... accumulated image file, 4... display, 5... camera, 6... accumulated image, 7... ...Real-time face image of communication partner, 8.9...Operator, 11...
Control unit, 12... touch panel for operation instructions, 13.
...Display, 14...Optical disk for image storage,
15... Image processing processor, 16... Data communication control unit, 17... Camera, 18... Image GODEC
119...Microphone, 20...Speaker, 21
...Echo canceller, 22...Audio C0DEC1
23... Line control unit, 24... Communication line, 31.4
1...Background board. 32.42...Person, 33.43...Camera, 34
．． 44... Transmission control unit, 35.45... Communication network, 3
6.48... Reception control unit, 37... Background extraction separation unit, 38... Image storage device, 39... Screen division synthesis unit, 40... Background replacement synthesis unit, 47... Background Separation and synthesis unit, 48... image storage unit, 49... interlocking control unit,
50...Display.

Claims (3)

[Claims] (1) A means for storing image data in a terminal, a means for searching and retrieving the stored terminal image database, and a means for linking multiple image databases with the same content on multiple terminals connected via a communication network. A means for controlling the display of the same screen by synchronizing all connected terminals according to a search control instruction requested from one of the terminals, and a real-time method for displaying images of people between terminals. It consists of a means for image communication, a means for displaying a real-time human image and terminal stored images that are displayed and output in synchronization with each other on a single display, and allows face-to-face interaction electronically via a communication network. However, a co-view screen telephone system is characterized in that image data files stored in individual terminals are linked and synchronized between remotely separated terminals, and are displayed together with a person image. (2) A means for separating a person part and a background part for a person image received via a communication line, and an interlocking and
Claim 1, further comprising means for replacing the terminal accumulated image that is displayed and output in synchronization with the image of the separated background part, composing it with the container part, and displaying it as one screen. public screen telephone system. (3) A means for separating a person part and a background part of a person image of one's side transmitted to a communication partner, and a means for separating a person part and a background part of a person image received from a communication partner and a person image of one's side. The device is characterized by having a means for replacing the terminal stored image, which is displayed and output in conjunction and synchronization between the terminals, with a separate background image, compositing it with the human figure, and displaying it as a single screen. A shared screen telephone system according to claim 2.