JP2000224557A - Presentation system, its method, presentation terminal and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable receiving presentation without disturbance by permitting an optional terminal to distribute presentation information by means of an optional timing. SOLUTION: A network address is transmitted from a reception terminal 2 and connection is requested to a presentation terminal 1. When the data receiving means 7 of the presentation terminal 1 receives the connection request, the network address is extracted and managed by a reception terminal address managing means 8. A data transmitting means 9 transmits whole kinds of presentation information being an execution object in a presentation executing means 10 to the reception terminal 2 which requests the connection. When presentation is executed by the means 10 after that, the means 9 transmits executed presentation information to the reception terminals 2-4 where the address is managed by the means 8 with a communication control part 6 and a network 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presentation system, a method, a presentation terminal, and a recording medium for recording a program for realizing the functions of the terminal, which are applied to a video conference or the like.

[0002]

2. Description of the Related Art As a presentation system applied to a video conference or the like, a presentation terminal that performs a presentation and a receiving terminal that receives the presentation are connected to a network, and presentation information such as conference data and presentation materials is transmitted. In some cases, a presentation terminal transmits a presentation to a reception terminal via a network and displays the presentation on a display of the reception terminal so that participants in the conference can view the presentation.

As a presentation system applied to such a video conference, for example, Japanese Patent Laid-Open No. 6-16 / 1994
No. 9456 (hereinafter referred to as “publication 1”) and Japanese Patent Laid-Open No. 9-1
A technique disclosed in, for example, Japanese Patent Application Publication No. 01767 (hereinafter, referred to as “publication 2”) is conventionally known.

[0004] The technique disclosed in Japanese Patent Publication No. 1
The presentation information is transmitted in advance from the presentation information recording unit of the presentation terminal to the presentation information recording unit of the receiving terminal, and after the conference starts, only the required instructions are sent from the presentation terminal to the receiving terminal, and the receiving terminal side It is designed to be able to receive presentations.

[0005] The technique disclosed in Japanese Unexamined Patent Publication (Kokai) No. 2 (2003) discloses presentation information displayed on a presentation terminal on the transmitting side.
The presentation is transmitted to the receiving terminal via the network, stored in the storage means of the receiving terminal, and displayed on the display means so that the receiving terminal can receive the presentation.

[0006]

However, the publication 1
According to the technique described above, the presentation information is transmitted to each terminal before the conference starts, but the technique for newly transmitting the presentation information after the conference starts is not disclosed. Further, the technique disclosed in Japanese Patent Application Laid-Open No. H11-26411 does not describe the timing of transmitting and receiving presentation information from a transmitting side to a receiving side, and does not disclose any technique for transmitting and receiving presentation information at an arbitrary timing.

[0007] On the other hand, in a video conference, generally, all participants participate in the conference from the start to the end, and their terminals are generally connected to a network. However, in a video conference, there are many cases where a person joins the conference from the middle and connects the terminal to the network after the conference starts.

In such a case, in order to allow the new participant to participate in the proceedings without any trouble, the presentation information is transmitted to the terminal of the new participant at an arbitrary timing when the new participant participates. Must be able to. However, in the conventional presentation system, sending the presentation information at an arbitrary timing as described above has not been considered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and enables presentation of presentation information to an arbitrary terminal at an arbitrary timing so that a presentation can be received without any trouble. An object of the present invention is to provide a presentation system, a method, a terminal for presentation, and a recording medium on which a program for realizing the function of the terminal is recorded.

[0010]

In order to achieve the above object, a presentation system according to a first aspect of the present invention comprises a presentation terminal for distributing presentation information, and a presentation terminal connected to the presentation terminal at any time via a communication line. And a receiving terminal configured to receive presentation information distributed from the presentation terminal, wherein the presentation terminal generates presentation information according to an external input and executes a presentation. A presentation executing means, a connection request receiving means for receiving a connection request from the receiving terminal, and a play list generated by the presentation executing means when the connection request receiving means receives the connection request. First presentation information transmitting means for transmitting, via the communication line, presentation information that can be displayed on the receiving terminal among the presentation information to the receiving terminal that transmitted the connection request; and the connection request receiving means. Receiving terminal management means for managing information about the receiving terminal that has transmitted the received connection request, and when the presentation executing means newly generates presentation information, the new presentation information is transmitted to the receiving terminal by the receiving terminal management means. Second presentation information transmitting means for transmitting to the managed receiving terminal via the communication line, wherein the receiving terminal transmits a connection request to the presentation terminal via the communication line. And the first,
It is characterized by comprising presentation information receiving means for receiving presentation information transmitted from the second presentation information transmitting means, and display means for displaying information according to the presentation information received by the presentation information receiving means.

In the above presentation system, the receiving terminal can obtain necessary presentation information from the presentation terminal by transmitting a connection request to the presentation terminal at an arbitrary time including after the start of the presentation. Therefore, even during the presentation, the receiving terminal can be connected to the presentation terminal to receive the presentation without any trouble.

[0012] In the presentation system, the presentation terminal may include a voice input unit for inputting voice information, and the voice information input from the voice input unit to a receiving terminal whose information is managed by the receiving terminal management unit. The apparatus may further include a voice transmitting unit that transmits the data via the communication line. Correspondingly, the receiving terminal further includes: a voice receiving unit that receives the voice information transmitted from the voice transmitting unit; and a voice output unit that reproduces and outputs the voice information received by the voice receiving unit. Can be provided.

In this case, the receiving terminal can receive audio information in addition to the presentation information from the presentation terminal. For this reason, even if the receiving terminal is located at a remote place, the presentation from the presentation terminal can be received.

In order to achieve the above object, a presentation method according to a second aspect of the present invention comprises a presentation terminal and a reception terminal connectable to the presentation terminal at any time via a communication line. In the system, a presentation method for executing a presentation by distributing presentation information from the presentation terminal to the receiving terminal, wherein a presentation executing step of generating presentation information according to an external input in the presentation terminal; A connection request transmitting step of transmitting a connection request to the presentation terminal via the communication line, and transmitting the connection request transmitted in the connection request transmitting step to the presentation terminal. A connection request receiving step to be received by the terminal, and when the presentation terminal receives the connection request in the connection request receiving step, a display at the receiving terminal among presentation information generated so far in the presentation execution step is displayed. A first presentation information transmitting step of transmitting possible presentation information from the presentation terminal to the receiving terminal that transmitted the connection request via the communication line; and a receiving step of transmitting the connection request received in the connection request receiving step. A receiving terminal managing step of managing information about the terminal in the presentation terminal; and, when new presentation information is generated in the presentation executing step, the new presentation information is transmitted to the presentation terminal. A second presentation information transmitting step of transmitting from the presentation terminal to the receiving terminal whose information has been managed in the receiving terminal managing step via the communication line; and the first and second presentation information transmitting steps transmit from the presentation terminal. A presentation receiving step of receiving the transmitted presentation information by the receiving terminal;
Displaying the information on the display of the receiving terminal according to the presentation information received in the presentation receiving step.

[0015] In order to achieve the above object, a presentation terminal according to a third aspect of the present invention is configured to be connectable to a receiving terminal that has made a connection request at an arbitrary time via a communication line. Presentation execution means for generating presentation information and executing a presentation, connection request reception means for receiving a connection request from the receiving terminal, and when the connection request reception means receives a connection request, the presentation execution means First presentation information transmitting means for transmitting, via the communication line, presentation information that can be displayed on the receiving terminal among the presentation information generated so far, to the receiving terminal that transmitted the connection request; To the receiving terminal that transmitted the connection request received by the connection request receiving means Receiving terminal managing means for managing information to be transmitted, and when the presentation executing means newly generates presentation information, the new presentation information is transmitted to the receiving terminal whose information is managed by the receiving terminal managing means. And a second presentation information transmitting means for transmitting via a line.

[0016] The presentation terminal may further include display means for displaying the generated presentation information in accordance with the execution of the presentation by the presentation execution means.

The presentation terminal, when ending the execution of the presentation by the presentation executing means, sends end information for ending the presentation to a receiving terminal whose information is managed by the receiving terminal managing means. An end information transmitting means for transmitting the information via the communication line may be further provided.

To achieve the above object, a computer-readable recording medium according to a fourth aspect of the present invention comprises:
A recording medium recording a program for executing a presentation by distributing presentation information from a computer configured to be connectable via a communication line to a receiving terminal that has made a connection request at an arbitrary time, and A presentation execution function for generating presentation information according to the input and executing a presentation, a connection request reception function for receiving a connection request from the receiving terminal, and a connection request received by the connection request reception function, A first presentation information transmission for transmitting, via the communication line, presentation information that can be displayed on the receiving terminal among presentation information generated so far by the presentation executing function to the receiving terminal that transmitted the connection request; Features and A receiving terminal management function for managing information relating to a receiving terminal that has received a connection request by the connection request receiving function; and, when new presentation information is generated by the presentation executing function, the new presentation information is transmitted to the receiving terminal. A program for causing a receiving terminal, whose information is managed by the management function, to execute a second presentation information transmission function of transmitting via the communication line is recorded.

[0019]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, a presentation in a video conference will be described as an example.

[First Embodiment] FIG. 1 is a block diagram showing a configuration of a presentation system according to this embodiment. 1, the presentation system includes a presentation terminal (hereinafter referred to as a presentation terminal) 1 and a LAN (Local Area Network).
k) and a plurality of receiving terminals 2 to 4 receiving a presentation from the presentation terminal 1 via the network 5. The receiving terminals 2 to 4 can connect to the presentation terminal 1 via the network 5 at an arbitrary timing.

First, the configuration of the presentation terminal 1 will be described. As shown in FIG. 1, the presentation terminal 1 is configured by a personal computer, a workstation, or the like, and has a communication control unit 6, a data receiving unit 7, a receiving terminal address managing unit 8, a data transmitting unit 9, a presentation ( Presentation) executing means 10 and input device 11
And a display device 12.

The communication control unit 6 receives data (including a connection request described later) from the receiving terminals 2 to 4 via the network 5.
Is received and passed to the data receiving means 7, and the receiving terminal 2
4 to be transmitted to the receiving terminals 2 to 4 via the network 5 (including presentation information).

The data receiving unit 7 receives the data received by the communication control unit 6, extracts the network addresses of the receiving terminals 2 to 4 included in the connection request, and transfers the network addresses to the receiving terminal address management unit 8. Receiving terminal management means 8
Manages the network addresses of the receiving terminals 2 to 4 passed from the data receiving means 7. The data transmission means 9
It receives data such as presentation information from the presentation executing means 10 and transmits the data to the receiving terminal managing means 8
Is transmitted from the communication control unit 6 to the receiving terminals 2 to 4 whose network addresses are managed.

The presentation executing means 10 is provided for the presentation terminal 1
When the data receiving unit 7 newly receives a connection request from the receiving terminals 2 to 4, all the presentation information that can be displayed on the receiving terminals 2 to 4 is managed. The data is passed to the data transmission means 9 and transmitted.

The presentation executing means 10 also provides presentation information (presentation data, data for processing the presentation data, conference data such as comments by the presentation executor, and display on the receiving terminals 2 to 4 in accordance with the input from the input device 11. (Including control data for switching presentation materials to be displayed), and manages the generated presentation materials.

When the presentation information is newly generated, the presentation executing means 10 passes the presentation information to the data transmitting means 9 and sends the presentation information to the receiving terminals 2 to 4 whose network addresses are managed by the receiving terminal address managing means 8. Send. Presentation execution means 10
Passes the necessary information of the managed presentation information to the display device 12 in accordance with the generated presentation information.

The input device 11 is a device for inputting presentation materials and data for processing the presentation materials and for instructing the presentation executing means 10 to execute a presentation (for example, to switch displayed data). is there. The display device 12 displays the presentation material and the like passed from the presentation executing means 10. In addition, by using a projector or the like as the display device 12, even a person who does not have the receiving terminals 2 to 4 can participate in this video conference and receive a presentation.

Next, the configuration of the receiving terminals 2 to 4 will be described. FIG. 1 shows only the receiving terminal 2 and the receiving terminal 2 will be described. However, the configurations of the receiving terminals 3 and 4 are substantially the same. As shown in FIG. 1, the receiving terminal 2 is constituted by a personal computer, a personal digital assistant, etc.
4, a data receiving means 15, a presentation (presentation) executing means 16, an external storage device 17, a display device 18, and an input device 19.

The communication control unit 13 receives data such as a connection request from the data transmission means 7 when transmitting a new participation in a presentation, and transmits the data to the presentation terminal 1 via the network 5. The data (including the presentation information) is received from the presentation terminal 1 via the PC and passed to the data receiving means 15.

The data transmitting means 14 receives the data (including the connection request) input from the input device 19 from the presentation executing means 16 and sends the data to the communication control unit 13 to the presentation terminal 1.
To send from. When transmitting a connection request, the data transmission unit 14 adds the network address of the receiving terminal 2 to it. The data receiving means 15 is a communication control unit 13
Receives the received data, and passes the presentation information to the presentation executing means 16.

According to the presentation information passed from the data receiving means 15, the presentation executing means 16 passes necessary data of the data included in the presentation information to the external storage device 17 or the display device 18.

The external storage device 17 stores the presentation executing means 1
Among the presentation information passed from 6, the presentation material, the processed data of the presentation material, the conference data, and the like are stored. The display device 18 displays the presentation material and the like passed from the presentation executing means 16.

The input device 19 is constituted by a keyboard or the like.
The user inputs data such as notes to be added to the presentation material displayed in 8. The input device 19 is also used when the owner of the receiving terminal 2 participates in a video conference to receive a presentation.
Enter an instruction to send a connection request to.

Hereinafter, the operation of the presentation system according to this embodiment will be described with reference to the flowcharts of FIGS.

FIG. 2 is a flowchart showing the processing executed in the presentation terminal 1. In the presentation terminal 1, first, it is determined whether the data receiving means 7 has received a connection request from the receiving terminals 2 to 4 (step A).
1). If it is determined that the connection request has not been received, the process proceeds to step A4 described below.

If it is determined in step A1 that connection requests from the receiving terminals 2 to 4 have been received, the data receiving means 7 extracts the network address contained in the connection request and sends it to the receiving terminal address managing means. 8 manages the network address (step A2). further,
The data transmission unit 9 acquires presentation information to be presented from the presentation execution unit 10,
A data link is established with the receiving terminals 2 to 4 that have made the connection request, and the acquired presentation information is transmitted (step A3). Then, the process proceeds to step A4.

Next, the presentation executing means 10 determines whether the start of the presentation has been instructed from the input device 11 or whether the presentation has already been executed (step A4). If it is determined that the presentation has not been started, the process returns to step A1.

When the start of the presentation is instructed, or when it is determined that the presentation has already been executed, the presentation executing means 10 generates the presentation information in accordance with the input from the input device 11 to execute the presentation. Execute (step A5). Further, the presentation executing means 10 causes the display device 12 to display information such as presentation materials according to the generated presentation information (step A6).

Next, the presentation executing means 10 passes the newly generated presentation information to the data transmitting means 9, and the data transmitting means 9 manages the received presentation information by a receiving terminal address managing means whose network address is managed. The communication control unit 6 causes the receiving terminals 2 to 4 to perform transmission via the network 5 (step A7).

Next, the presentation executing means 10 determines whether or not the end of the presentation is instructed from the input device 11 (step A8). If it is determined that the end of the presentation has not been instructed, the process returns to step A1.

On the other hand, when the end of the presentation is instructed, the presentation executing means 10 generates predetermined end information and passes it to the data transmitting means 9, and the receiving terminal address management means 8 sends the end information to the network address. Are transmitted from the communication control unit 6 via the network 5 to the receiving terminals 2 to 4 in which is managed (step A9). Then, the process of this flowchart ends, and the presentation by the presentation terminal 1 ends.

FIG. 3 is a flowchart showing the processing executed in the receiving terminals 2 to 4. When the receiving terminals 2 to 4 participate in a video conference and receive a presentation from the presentation terminal 1, first, the input device 19 inputs an instruction to transmit a connection request to the presentation terminal 1. Accordingly, the data transmission means 14
Adds the network address of the terminal itself to the connection request and causes the communication control unit 13 to transmit the request to the presentation terminal 1 via the network 5 (step B1).

According to the transmitted connection request, the receiving terminals 2 to
4 is connected to the presentation terminal 1, the data receiving means 1
5 receives data (presentation information or end information) from the presentation terminal 1 and
6 (step B2). The presentation information passed to the data receiving means 15 in step B2 is
This includes the information transmitted in any of step A2 and step A7, but when the processing of this step is first executed, it becomes the presentation information transmitted from the presentation terminal 1 in step A2.

Next, the presentation executing means 16 determines whether or not the data passed from the data receiving means 15 in step A2 is presentation end information (step B3). If it is determined that the information is not end information, the data is presentation information,
The presentation executing means 16 stores the information in the external storage device 17 and displays necessary information according to the presentation information on the display device 18 (step B4).

Next, the presentation executing means 16 determines whether data for adding to the presentation material has been input from the input device 19 (step B).
5). If it is determined that no data has been input from the input device 19, the process returns to step B2.

On the other hand, when it is determined that data has been input from the input device 19, the data is written in the presentation material displayed on the display device 19, and the presentation material in which the data is written is externally stored. The presentation material stored in the device 17 is overwritten and stored (step B6).
Then, the process returns to step B2.

In step A2, the data receiving means 15
If it is determined that the data passed to the presentation executing means 16 is the end information, the processing of this flowchart is ended, and the processing of the presentation on the receiving terminals 2 to 4 ends.

Hereinafter, the operation of the entire presentation system according to the present embodiment is started by newly connecting the receiving terminal 2 to the network 5 while the presentation by the presentation terminal 1 is being executed. The following describes an example in which a user participates in a given video conference newly (the receiving terminals 2 and 3 are already connected to the presentation terminal 1 and their network addresses are managed by the receiving terminal address management means 8). Do).

First, an instruction for a connection request is input from the input device 19 of the receiving terminal 2, the network address is added to the connection request, and a presentation is made from the data transmission means 14 via the communication control unit 13 and the network 5. The terminal 1 is caused to transmit (step B1).

In the presentation terminal 1, when the data receiving means 7 receives this connection request via the communication control section 6 (step A1), it extracts the network address of the receiving terminal 2 from the connection request and manages the receiving terminal address. Means 8 is managed (step A2). Further, all the presentation information managed by the presentation means 10 is transmitted from the data transmission means 6 to the reception terminal 2 via the communication control unit 6 and the network 5 (step A3).

Next, in the receiving terminal 2, when the data receiving unit 15 receives the presentation information via the communication control unit 13 (step B2), the presentation executing unit 16 stores the presentation information in the external storage device 17 and Then, necessary information such as presentation materials is displayed on the display device 18 (step B4).

Here, since the presentation is already in the execution state (step A4), when the presentation execution means 10 of the presentation terminal 1 performs the processing to generate the presentation information (step A5), the information is transmitted according to the presentation information. 1 display device 1
2 is displayed (step A6). At the same time, the presentation information is transmitted from the data transmitting means 9 to the receiving terminals 2, 3, and 4 whose network addresses are managed by the receiving terminal address management means 8 via the communication control unit 6 and the network 5 ( Step A7).

In the receiving terminals 2, 3, and 4, when the data receiving means 15 receives this presentation information via the communication control means 13 (step B2), the receiving terminals 2, 3, and 4
In each of 3 and 4, the presentation execution means 16
This is stored in the external storage device 17, and necessary information such as presentation materials is displayed on the display device 18 in accordance with the presentation information (step B4).

Here, for example, if data is input from the input device 19 in the receiving terminal 3, this data is written to the presentation material displayed on the display device 18 of the receiving terminal 3, and the data is written. The presentation material is overwritten and stored in the external storage device 17 of the receiving terminal 3 (step B6).

When the end of the presentation is instructed from the input device 11 of the presentation terminal 1 (step A).
8), the presentation unit 10 generates the end information, receives the data from the data transmission unit 9 via the communication control unit 6 and the network 5, and receives the reception terminals 2, 3 whose network addresses are managed by the reception terminal address management unit 8. 4 is transmitted to the end information (step A9). Thus, the presentation process on the presentation terminal 1 side ends.

In the receiving terminals 2, 3, and 4, when the data receiving means 15 receives the end information via the communication control means 13 (step B2), the receiving terminals 2, 3, and 4 receive the end information. By being judged (Step B
3) The presentation process on the receiving terminals 2, 3, and 4 ends.

As described above, in the presentation system according to this embodiment, even after the presentation starts, the receiving terminals 2 to 4 make a connection request to the presentation terminal 1 so that the presentation terminal 1 The presentation information managed by one presentation means 10 can be obtained. Further, after making the connection request, the network addresses of the receiving terminals 2 to 4 are managed by the receiving terminal address management means 8,
The presentation information generated thereafter can be received from the presentation terminal 1. Therefore, even after the start of the presentation, the receiving terminals 2 to 4 can connect to the presentation terminal 1 and receive the presentation without any trouble.

[Second Embodiment] FIG. 4 is a block diagram showing a configuration of a presentation system according to this embodiment. In this presentation system, a presentation terminal 1 and a receiving terminal 2 are located at remote locations,
It differs from the first embodiment (FIG. 1) in that the connection is made via the telephone line 21. Although only one receiving terminal 2 is shown in FIG. 4, it may include a plurality of receiving terminals as in the presentation system according to the first embodiment.

Further, at the receiving terminal 2 located at a remote place,
The presentation terminal 1 has a microphone 22 and the receiving terminal 2 has a speaker 23 so that the presentation terminal 1 can receive voice. Microphone 2 of presentation terminal 1
2 is converted into digital voice data and transmitted from the data transmission means 9 to the communication control unit 6 and the telephone line 2.
1 to the receiving terminal 2. The voice data is received by the data receiving unit 16 of the receiving terminal 2 via the communication control unit 13, converted into an analog signal, and output from the speaker 23.

The operation of the presentation system according to this embodiment is almost the same as that described in the first embodiment (FIGS. 2 and 3). However, in the presentation system according to this embodiment, the data transmitting means 9 of the presentation terminal 1 transmits the audio data to the receiving terminal 2 when the audio is input from the microphone 22 (Step A2). When receiving the audio data from the presentation terminal 1, the data receiving means 16 of the receiving terminal 2 causes the corresponding sound to be output from the speaker 23 (step B2).

As described above, in the presentation system according to this embodiment, even if the receiving terminal 2 is located at a remote location with respect to the presentation terminal 1, the presentation information is connected to the presentation terminal 1 at an arbitrary timing. Can be sent. The presentation terminal 1 can also receive audio, and the reception terminal 2 located at a remote location can receive a presentation from the presentation terminal 1.

[Modifications of Embodiment] The present invention is not limited to the above-described first and second embodiments, and various modifications and applications are possible. Hereinafter, modifications of the above-described embodiment applicable to the present invention will be described.

In the first and second embodiments, the presentation terminal 1 that performs a presentation and the receiving terminals 2 to 4 that receive the presentation are fixedly determined. However, among a plurality of terminals connected to the network, one used as a presentation terminal and one used as a reception terminal may be variably set.

In this case, a terminal that newly functions as a presentation terminal from the receiving terminal firstly
What is necessary is just to request all terminals connected via the network to transmit the network address.
In response to this request, the other terminal transmits a network address, and the terminal which newly functions as a presentation terminal manages those network addresses in the same manner as the receiving terminal address management means 8 of FIGS.
What is necessary is just to transmit the presentation information required in the initial stage to those terminals. After that, the newly functioning presentation terminal may operate in the same manner as the presentation terminals of the first and second embodiments.

In the first and second embodiments, the presentation is ended only by generating end information in the presentation terminal 1 and transmitting it to the receiving terminals 2 to 4. However, in a video conference, the owner of a specific receiving terminal may leave the conference on the way. Therefore, in order to cope with such a case, the end information is transmitted from the receiving terminal to the presentation terminal, and the connection between the receiving terminal and the presentation terminal is disconnected.
What is necessary is just to delete the network address of the receiving terminal managed by the presentation terminal.

In the second embodiment, the receiving terminal 2
Is present at a remote location with respect to the presentation terminal 1, the microphone 22 is connected to the presentation terminal 1, and the speaker 2 is connected to the reception terminal 2.
3 was installed so that voice could be sent from the presentation terminal 1 to the receiving terminal 2. On the other hand, a camera is further installed on the presentation terminal 1 to transmit the image data of the presentation executor to the receiving terminal 2, and this image is displayed together with the presentation information on the display device 1 of the receiving terminal 2.
8 may be displayed.

In the first and second embodiments, the processing shown in the flowcharts of FIGS. 2 and 3 is executed by the function of each means provided in the presentation terminal 1 or the receiving terminal 2. However, a program for executing the processing shown in the flowcharts of FIGS. 2 and 3 may be stored in a computer-readable recording medium such as a CD-ROM, distributed, installed in a personal computer or the like, and executed. Good.

[0068]

As described above, according to the present invention,
At an arbitrary time, an arbitrary terminal can connect to the presentation terminal, distribute presentation information from the presentation terminal, and receive a presentation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a presentation system according to a first embodiment of the present invention.

FIG. 2 shows the presentation system of FIG.
It is a flowchart which shows the process which a presentation terminal performs.

FIG. 3 shows the presentation system of FIG.
It is a flowchart which shows the process which a receiving terminal performs.

FIG. 4 is a block diagram illustrating a configuration of a presentation system according to a second embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 presentation terminal 2 to 4 reception terminal 5 network 6 communication control unit 7 data reception unit 8 reception terminal address management unit 9 data transmission unit 10 presentation execution unit 11 input device 12 display device 13 communication control unit 14 data transmission unit 15 data reception unit 16 Presentation executing means 17 External storage device 18 Display device 19 Input device 21 Telephone line 22 Microphone 23 Speaker

Claims (7)

[Claims] 1. A presentation system comprising: a presentation terminal for delivering presentation information; and a receiving terminal connectable to the presentation terminal at any time via a communication line and receiving presentation information distributed from the presentation terminal. The presentation terminal, wherein the presentation terminal generates presentation information according to an external input, and executes a presentation. A presentation requesting unit that receives a connection request from the receiving terminal. When the receiving unit receives the connection request, the presentation executing unit transmits the presentation information that can be displayed on the receiving terminal among the presentation information generated so far by transmitting the connection request. First presentation information transmitting means for transmitting to the receiving terminal via the communication line, receiving terminal managing means for managing information on the receiving terminal that has transmitted the connection request received by the connection request receiving means, and the presentation execution A second presentation information transmitting means for transmitting, via the communication line, the new presentation information to a receiving terminal whose information is managed by the receiving terminal managing means when the means newly generates presentation information; And a connection request transmitting means for transmitting a connection request to the presentation terminal via the communication line; and a presentation for receiving presentation information transmitted from the first and second presentation information transmitting means. Information receiving means; Accordance presentation information station information received by the receiving means, the presentation system comprising: a display means for displaying information. 2. The communication terminal according to claim 1, wherein the presentation terminal includes: a voice input unit for inputting voice information; and a communication terminal for transmitting the voice information input from the voice input unit to a reception terminal whose information is managed by the reception terminal management unit. Voice receiving means for transmitting the voice information transmitted from the voice transmitting means; voice receiving means for receiving voice information transmitted from the voice transmitting means; and reproducing and outputting the voice information received by the voice receiving means. The presentation system according to claim 1, further comprising an audio output unit. 3. In a system comprising a presentation terminal and a reception terminal connectable to the presentation terminal at any time via a communication line, by distributing presentation information from the presentation terminal to the reception terminal. A presentation method for executing a presentation, wherein: a presentation execution step of generating presentation information according to an external input in the presentation terminal; and a connection transmitting a connection request from the reception terminal to the presentation terminal via the communication line. A request transmitting step; a connection request receiving step in which the presentation terminal receives the connection request transmitted in the connection request transmitting step; When the presentation terminal receives the connection request, the presentation information that can be displayed on the receiving terminal among the presentation information generated so far in the presentation execution step is transmitted from the presentation terminal via the communication line. A first presentation information transmitting step of transmitting to the receiving terminal that has transmitted the connection request; and a receiving terminal managing step of managing, in the presentation terminal, information on the receiving terminal that has transmitted the connection request received in the connection request receiving step. When new presentation information is generated in the presentation executing step, the new presentation information is managed in the receiving terminal management step from the presentation terminal via the communication line. A second presentation information transmitting step of transmitting to the receiving terminal, a presentation receiving step of receiving the presentation information transmitted from the presentation terminal in the first and second presentation information transmitting steps, Displaying the information on a display of the receiving terminal according to the presentation information received in the presentation receiving step. 4. A presentation terminal configured to be connectable via a communication line to a receiving terminal which has made a connection request at an arbitrary time, wherein the presentation terminal generates presentation information in accordance with an external input and executes a presentation. Executing means, a connection request receiving means for receiving a connection request from the receiving terminal, and when the connection request receiving means receives a connection request, receiving among the presentation information generated by the presentation executing means so far. A first presentation information transmitting unit that transmits presentation information that can be displayed on the terminal to the receiving terminal that transmitted the connection request via the communication line; and a connection request received by the connection request receiving unit. Receiving terminal management means for managing information about the receiving terminal; A second presentation information for transmitting, via the communication line, the new presentation information to a receiving terminal whose information is managed by the receiving terminal managing means when the presentation executing means newly generates presentation information; A presentation terminal comprising transmission means. 5. The presentation terminal according to claim 4, further comprising display means for displaying the generated presentation information in accordance with the execution of the presentation by said presentation execution means. 6. When ending execution of a presentation by said presentation executing means, end information for ending said presentation is transmitted to said receiving terminal whose information is managed by said receiving terminal managing means via said communication line. 6. The presentation terminal according to claim 4, further comprising end information transmitting means for transmitting the presentation information. 7. A recording medium recording a program for executing a presentation by distributing presentation information from a computer connectable via a communication line to a receiving terminal that has made a connection request at an arbitrary time. A presentation execution function for generating presentation information according to an external input and executing a presentation, a connection request reception function for receiving a connection request from the receiving terminal, and a connection request received by the connection request reception function. When the presentation execution function transmits presentation information that can be displayed on the receiving terminal among the presentation information generated so far, to the receiving terminal that transmitted the connection request via the communication line. 1 presentation information A transmitting function, a receiving terminal management function for managing information relating to a receiving terminal that has received a connection request with the connection request receiving function, and when new presentation information is generated by the presentation execution function, the new presentation information is transmitted. Recording a program for causing a receiving terminal, whose information is managed by the receiving terminal management function, to execute a second presentation information transmitting function of transmitting via the communication line, recoding media.