JP2003030122A - Data sharing method and data processor applied to network system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a presentation function which is applicable to various fields over a wide range only by constituting a network for connecting personal computers to one another. SOLUTION: A system presentation system is constituted by connecting a personal computer for a presenter function and a personal computer 20 for a user function by the network through hubs. The personal computer 10 generates a platform 14 of the presenter function according to an installed program. The personal computer 20 generates a platform 24 by downloading from the platform 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network system configured by connecting a plurality of computers,
In particular, it relates to a distributed application system composed of personal computers.

[0002]

2. Description of the Related Art In recent years, development has been made in which a plurality of computers such as personal computers are connected to form a network system and various applications are realized. In particular, the development of a distributed application system (or a distributed computing environment) using the distributed object technology has attracted attention. The distributed application system is a system (network environment) capable of distributed processing of applications among a plurality of computers (including cases of different models).

An application of this distributed application system is a presentation system using a personal computer. The presentation system includes a personal computer operated by a presenter (hereinafter sometimes referred to as P-PC) and a personal computer operated by a user corresponding to an audience (hereinafter referred to as A-P).
(Sometimes referred to as C) constitutes a network,
It is a system that mutually communicates data to be shared (including so-called contents such as slides and pointers).

[0004]

As described above, as an application of the distributed application system in the network system, there is a presentation system in which data can be shared between computers. With such a system, contents of text (character information), still images (so-called slides), and moving images can be provided to a plurality of users without requiring conventional equipment such as an OHP and a screen. It is possible. However, the conventional presentation system generally requires not only a personal computer operated by the user but also hardware such as a server and a decoder board, and is not easily available to the user.

In recent years, notebook personal computers that can be carried by users have become widespread. Therefore, if a presentation system that can share data only between notebook personal computers can be realized without the need for special hardware such as a conventional server, it will be limited to places and computer models. Without it, it is possible to provide a presentation function that each user can easily use.

As a specific example, it can be used for a presentation when a sales person introduces a product to a user. In this case, the presenter who is an introducer (sales person) of the product connects the notebook personal computer brought by himself and the notebook personal computer on the user side to form a simple network. Then, the presenter sends various data (here, brochure information) for introducing the product from the personal computer of the presenter to the computer on the user side. Further, as another specific example, in seminars and training, the lecturer and the trainee each bring a notebook personal computer to form a network. The instructor just operates his computer,
It can be used for presentations such as presenting the contents of lectures and giving questions and answers to students.

In short, if a presentation system can be realized by simply connecting a plurality of personal computers to form a simple network, it is possible to provide a presentation function applicable to various and wide fields.

Therefore, an object of the present invention is to provide a presentation system to which a distributed application system is applied, which does not require hardware such as a server and which can be used in a wide variety of areas by simply constructing a network connecting personal computers. It is to realize the presentation function applicable to the field of.

[0009]

The first aspect of the present invention is as follows.
A data sharing method applied to a network system configured by connecting a plurality of computers, the function to generate each module for managing, distributing, and displaying the shared data on the network system, and the network system. The data sharing method is characterized by having a function of delivering shared data to each computer connected to the computer and a function of displaying the shared data by a display unit of each computer.

By setting application software which realizes such a data sharing method in a computer such as a laptop personal computer, shared data is mutually communicated and used for each computer connected to a network. be able to. Specifically, the computer on the presenter side manages shared data such as slide content (image data) on a plurality of screens and position coordinate data of a pointer,
The selection display of each slide and the movement control of the pointer on the display screen are performed. Then, the shared data such as the content and the pointer is distributed to the computer on the side of each user and displayed on each display screen.

A second aspect of the present invention is a presentation method applied to a presentation system for connecting a plurality of computers to form a network system and transmitting / receiving shared data on the network system. A step of generating a first application module for realizing a presenter function of managing, transmitting / receiving, and displaying the shared data with a user function of transmitting / receiving and displaying the shared data with the presenter function. And a step of transmitting a shared data selected by the presenter function to each computer having a user function on the network system.

Specifically, when a presentation system is constructed by a computer network,
A first application module is generated on the computer that functions as a presenter among the plurality of members. On the other hand, the second application module is generated in the computer that functions as the user among the plurality of members. The second application module is set in the computer that operates as a user function by the download function included in the first application module. Further, the second application module may be activated independently of the first application module. Furthermore, the first
The second application module and the second application module are simultaneously set in each computer, and the first application module functions in the case of the presenter function and the second application module functions in the case of the user function. It may be configured to.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a presentation system related to the embodiment.

(System Configuration) This system is a network presentation system (hereinafter referred to as NPS) that realizes a presentation function on a network configured by connecting a plurality of personal computers 10 and 20 via a hub 1. In some cases) should also be called. Further, this system is an application of a distributed application system using distributed object technology. The configuration of this system will be specifically described below.

In this embodiment, one personal computer (P-PC) 10 operated by the presenter and a plurality of personal computers (P-PC) 10 operated by the user (3 in FIG. 1).
Assume a system in which a personal computer (A-PC) 20 is connected via a hub 1 to a network.

The P-PC 10 is a network interface card (NIC) 11, such as an Ethernet (registered trademark) card,
Display device 12, storage device 13, and platform 1
It has four components. The NIC 11 is an interface for transmitting / receiving shared data, which will be described later, to / from each A-PC 20 network-connected via the hub 1. The display device 12 has a display screen made of, for example, a liquid crystal display, and has a function of displaying a slide image (contents), a pointer, and the like described later. The pointer is an instruction mark (cursor pointer) for instructing an arbitrary position in the displayed slide image. The position coordinate data of this pointer is also stored in the PC 10, 20.
It is included in the shared data that is sent and received between them.

The storage device 13 is, for example, a file device such as a hard disk drive, and stores a slide set 30 to be presented in this embodiment. The slide set 30 is a content that bundles slides of a plurality of screens. Each slide is a digital image including text, a still image, and a moving image corresponding to one normal OHP page. The slide set 30 is a floppy (registered trademark) disk or CD-R.
It is stored in the storage device 13 by being installed from a disk medium such as OM or being downloaded via a network.

The platform 14 is an application program (AP) which is the main element of the embodiment.
It is a basic element including software for operating 14A and hardware such as CPU and main memory. AP
The 14A may be referred to as an NPS program, and, as will be described later, is roughly composed of six function modules (first application modules).
Here, the NPS program 14A is set in the P-PC 10 by being installed from a disk medium such as a floppy disk or a CD-ROM or being downloaded via a network.

The A-PC 20 is basically a P-PC 10.
It has the same hardware elements as. That is, NIC2
1, a display device 22, and a storage device 23. The platform 24 has the same basic elements including hardware and software such as a CPU and a main memory, but as will be described later, an application program (AP) 2 for a user function.
Perform 4A. The AP 24A is composed of modules required for user functions among the modules included in the NPS program (second application module). AP24A uses P-PC1 by the download function included in NPS program 14A.
It is downloaded from 0 and set. Also, NPS
Independent of the program 14A, the AP 24A
-It may be installed in the PC 20 from the above-mentioned disk medium or network. In practice, as will be described later, the AP 24A is the NPS program 14A.
It has the same function modules as the above, and is configured so that only the function modules required as user functions are activated.

(Presentation Function) The presentation function of the embodiment will be described below with reference to FIGS. 2 to 4 together with FIG.

Here, one P-PC 10 (including an operator) is a presenter (P) and a plurality of A-Ps.
It is assumed that each user (A) who is C20 (including the operator) is connected via the hub 1 to form a network. In other words, FIG. 3 (A)
As shown in (1), there is one group, and a presentation space S1 composed of only P as a member and a plurality of A is configured. This presentation space S
1 is a basic type of the same embodiment.

Further, it is assumed that the NPS program 14A is set on the platform 14 in the P-PC 10 and the slide set 30 is set in the storage device 13. In addition, in each A-PC 20, P-
When the NPS program is downloaded from PC10,
It is assumed that the AP 24A is set on the platform 24.

First, as a basic function, the AP 14A of the presenter (P) reads the slide set 30,
A slide (one image) required for display is selected and delivered to each user (A). In the P-PC 10, the display device 12 has a presenter (P) as shown in FIG.
The side display screen (P screen) is displayed. This P screen is
The slide image 40 selected by the operator, the slide-turning icon 41, and the pointer 42 are displayed. The presenter (P) can move the position of the pointer 42 to indicate an arbitrary portion of the displayed slide image 40.
Further, by clicking the slide-turning icon 41, the slide image 40 can be updated so that the slide is turned, so to speak.

The AP 14A of the presenter (P) delivers the slide image 40 and the pointer 42 (position coordinate data) to each user (A) by a message. As a result, as shown in FIG. 2B, the display screen (A screen) on the user (A) side is displayed on the display device 22 of each A-PC 20. This A screen is a synchronization screen of the P screen,
That is, the slide image 40 and the pointer 42 are displayed in synchronization.

With the above-mentioned basic or indispensable presentation function, the presenter (P) points with the pointer 42 while confirming the slide displayed on the P screen of the presenter, and slides to turn the required slide. The image 40 can be updated. On the other hand, each user (A), while watching the slide displayed in synchronization with the presenter (P) side on each A screen, also confirms the portion pointed to by the pointer 42 that also moves in synchronization. You can Therefore, the presenter (P)
For example, if you create the slides required for product introduction in advance,
For each user (A), it is possible to give a presentation introducing the product via a personal computer. In this case, you need to prepare the hub 1 required for your personal computer and network connection.
No conventional OHP or screen is required. Further, shared data such as the slide image 40 used for the presentation is delivered to the A-PC 20 of each user (A). On the A-PC20 side,
By storing the delivered shared data in the storage device 23, the shared data can be read out later from the storage device 23 and used for reconfirmation or material creation.

Further, the extended presentation function of the embodiment will be described.

As an extended function, as shown in FIG. 4A, a slide list (index) window 43 is displayed on the P screen on the presenter (P) side in addition to the slide image 40 and the pointer 42. . In this window 43, a progress display pointer 42A that indicates the currently displayed slide is also displayed. This window 43 also uses the message A-P of each user (A) as the message.
By being delivered to C20, they are synchronously displayed on each A screen of each user (A).

Furthermore, on the P screen of the presenter (P) side, the participating users (A connected to the network)
Display the window 44 of the (PC) list (audience list). In this window 44, responses from the A-PC 20 of each user (A) such as questions to the content (slide) of the presentation (so to speak, raise hands).
If there is, a message to that effect is displayed. Also, there is a function to dynamically display late participants or left participants. Figure 4
In the specific example shown in (A), an icon corresponding to each user is displayed, and the icon 44A of the user who has raised his or her hand.
Change the display color of. Alternatively, it may be blinked or marked to facilitate recognition. Of course, the window 44 may be simply a list display of users.

Next, on the A-PC 20 of each user (A), each user (A) displays a window 45 called a private screen on the A screen, which is independent of the P screen synchronization screens 40 and 43. Have the function to The private screen 45 displays the slide image and the slide list included in the shared data delivered from the P-PC 10. These shared data are delivered to AP
It is stored in the storage device 23 of C20. That is, each user (A) can redisplay the already displayed slide independently of the slide selected by the presenter (P). On the private screen 45, a progress display pointer that indicates the currently displayed slide is also displayed. Figure 4
In the specific example shown in (B), a user displays a slide (1. Introduction) already displayed on the private screen 45 separately from the slide (2. Message transmission / reception) selected by the presenter (P). I'm confirming.

The presenter (P) can select and display the private screen 45 displayed by the user by selecting the corresponding icon from the user list in the window 44. That is, as shown in FIG. 4A, the private screen 45 of the selected and designated user can be synchronously displayed on the P screen. Further, the pointer 46 on the private screen 45 can be synchronously displayed on the P screen. With such a function, in question and answer with the user, it is possible to transfer the authority as a so-called sub-presenter (SP) to the user who is the questioner. That is, when the presenter (P) clicks the icon 44A of the user who has raised his hand, the private screen 45 of the questioner's user is changed to the presenter (P).
Displayed in sync on everyone's display screen including. At this time,
The pointer 46 on the private screen 45 is also displayed synchronously, and everyone including the presenter (P) can recognize the pointing portion of the pointer 46 operated by the user who is the questioner according to the content of the question.

In addition to the extended function as described above, the presenter (P) has a function of delivering a moving image embedded in the slide set 30 to each user (A). As a result, continuous content (animation, etc.) is displayed for each user (A) in addition to the slide of one sheet. In addition, especially on the user (A) side, there is a function of inputting a memo or a check into the displayed slide image. As described above, each user (A) can save the slide image provided by the presenter (P) as an electronic file in the storage device 23 of the A-PC 20. At this time, the slide image in which a memo or a check is input can be stored in the storage device 23 by the function. Here, as a kind of security function, the presenter (P) has a function of deleting the slide specified in the delivered slide image from the storage device 23 of each user, or a function of not storing the slide image in the storage device 23. In other words, each user (A) has a presenter (P)
You can save only the slide images that are allowed to be saved from the slide images provided by. As a result, it is possible to prevent copying of the slide image, which would be inconvenient if leaked to users other than the users who participated in the presentation.

The presentation function including the basic function and the extended function as described above can be applied to a concrete presentation such as a seminar or a training in which the presenter (P) is a lecturer. That is, each user (A)
Presenter (P) using his own A-PC 20
You can watch the lecture while watching the slides selected by the lecturer. In this case, each user (A)
The private screen can be used to display and reconfirm the desired slide while continuing the lecture. Moreover, each user (A) can perform question and answer as needed by the said function. Furthermore, each user (A) has his or her own A-
The slide image used in the lecture can be stored in the PC 20. This makes it possible to realize a so-called electronic presentation without using a conventional OHP, equipment such as a screen, and an OHP sheet. Moreover, in the system of the present embodiment, the presenter (P) and each user (A) only need to prepare a normal personal computer such as a notebook personal computer, and require special hardware such as a server and a decoder board. Not.

In the description of the present embodiment, it is assumed that the presenter (P) platform 14 is preliminarily set with the NPS program 14A for executing the presentation function. However, as a matter of course, in practice, as described above, it is installed from a disk storage medium such as a floppy disk or a CD-ROM, or downloaded from a network and set. As a specific example, an operator who is a presenter (P) is a disk (CD-ROM) in which the NPS program 14A is stored in, for example, a CD-ROM drive equipped in the P-PC 10.
Is set and installed in the storage device 13, and then set in the platform 14. The NPS program is downloaded from the P-PC 10 to the A-PC 20 of each user (A), and the platform 24
It is assumed that AP24A is set to. In this case as well, as in the case of the P-PC 10, it may be set by installation from the disk storage medium or download from the network. However, as described later, between the presenter (P) and each user (A),
Communication of information is necessary to compose the presentation space.

Here, in the present embodiment, as the presentation space, as shown in FIG. 3A, a basic type is assumed in which one group exists and only one member P and a plurality of members A are present. Has been done. Besides this, FIG.
As shown in (B), the existing presentation space S
For 2, the development type in which an external user (Aa) can participate via a kind of mediation (mediation function) can be assumed. Further, as shown in FIG. 3C, a development type in which a plurality of presentation spaces S1 and S2 are overlapped so as to partially overlap with each other can be assumed. In this development type, one member (personal computer and operator) can duplicate the functions of the presenter (P2) and the user (A) over a plurality of groups forming the presentation spaces S1 and S2. .

(Configuration of application module)
As described above, the system of the present embodiment realizes a predetermined presentation function by generating a presentation space by the APs 14A and 24A which are NPS programs set for the presenter (P) and each user (A). is doing.

Hereinafter, each AP will be described with reference to FIGS.
The configuration and generation process of 14A and 24A will be described.

First, as shown in FIG. 5, the presentation space of the embodiment is composed of a network connection by a plurality of members M0 to M3. As will be described later, this presentation space is roughly composed of 6 function modules 60 to 66. The 6 function modules 60 to 66 are components of the APs 14A and 24A. Each member M0 to M when starting the NPS program
Similar 6-function modules 60 to 66 are generated in any of 3 (that is, each personal computer). Activation of each module is determined by the subsequent participation form (presenter or user). As a result, only the modules 61 to 6 that exist in the presentation space are present.
3, 65 and a plurality of modules 64, 66 that exist. Here, for convenience, the member M0 is set as a presenter (member having the presenter authority P), and the other members M1 to M3 are set as users.

The storage place (that is, the storage device) 13 of the 6-function modules 61 to 66 and the slide set 30 is shown in FIG.
The conceptual structure is as shown in. 6 function module 60
The following four function modules 61 to 64 among
An initialization function module (i included in the NPS program
digitalizer) (see FIG. 8).

First, the space manager (SM) 61
Is each member M0 to participate in the presentation space.
This module manages M3 attribute information (member name, authority type, registration time, etc.). The authority type means a presenter authority (P), a user authority (A), a sub-presenter authority (P), and the like. The SM 61 also includes a function of exchanging information with another presentation space via a mediator (mediation function). MR described later
The (Material Repository) manager 62, the control panel 64, and the active view 65 refer to the attribute information as needed.

The MR manager 62 is a module for managing the slide set 30 which is shared data, and specifically holds the arrangement information of the slide set 30. The material accessor 63 refers to the arrangement information as needed. The MR manager 62 reads the slide set storage information file from the storage device 13 when the system is activated. After that, the information registered by the member (presenter) is written out to the file at any time.

Material Accessor (Material)
The accessor (MA) 63 generates an active view 65 and controls the control panel 64, as described later.
The slide data (slide image) required by the At this time, the MA 63 queries the MR manager 62 to refer to the slide set arrangement information, as described above.

A control panel (CP) 64 is a GUI (Graphic) for registering member names and space names and for requesting operations such as space creation / deletion / selection / leaving.
This is a function corresponding to alUser Interface). As a specific example, as shown in FIG. 6, the operation panel screens 70 to 77 corresponding to various operation contents are displayed on the display device 12.
To display. The operation panel screen 70 is an initial screen and is used to specify a jump destination to each operation panel. The operation panel screen 71 displays “Space Browse”
r ”screen, select the destination from the space list,
It is for setting participation in the presentation space, leaving, member participation list, and delegation of authority. The operation panel screen 72 is "Slide set Browser".
This is a screen for selecting / registering a slide set and for hierarchical display of the slide set. further,
The operation panel screen 73 is "Space Generation Dialog"
This is a screen and is used to create space and set access control.

The operation panel screen 74 is a "Member Registration Dialog" screen for additionally registering a new member. The operation panel screen 75 displays “Confirmation Dia.
log ”screen for deleting a member from the member list. The operation panel screen 76 displays “Confirm Di
The “log” screen is for displaying a notification message as to whether or not the slide set is used as read-only when the slide set is already used. Operation panel screen 7
Reference numeral 7 denotes a "new registration Dialog" screen, which is used to set information regarding a slide set.

Active View (Active View)
The w: AV) 65 is generated by the MA 63, holds image data (display data) of shared data shared by each member such as a slide and a pointer, and delivers it to the screen of each member. That is, in order to realize the function of displaying the slide, various usage forms are possible by generating the AV 65 and controlling where the screen is generated (the above-mentioned synchronization screen or private screen).

The screen 66 is AV6.
5 is a module having a function of generating image data of a slide and a pointer from the AV 65 and opening and displaying a window on the display of the display device. Screens S0 to S3 corresponding to displays of all members (that is, all members) including the presenter itself
Will be present (see FIG. 5).

(Process for Generating / Deleting Presentation Space) The operation of each functional module involved in the process for generating / deleting the presentation space will be described below with reference to FIGS. 8 to 11.

As described above, it is the presenter (P) who is the first participating member M0 to create the presentation space. The initialization function module (initializer) included in the NPS program 14A set in the presenter (P) is as shown in FIG.
The SM 61, the MR manager 62, the MA 63, and the CP 64 are generated in this order. This order is determined by the reference relationship between each module. That is, the functional module generated later is generated by receiving the reference of the functional module generated before that via the initializer. The generation place is inside a personal computer (including a utilization node or utilization process on the network) that has activated the NPS program. Here, the CP 64 needs to refer to the AV 65 in order to send information for slide switching and pointer movement to the AV 65.

Next, the AV 65, as described above, uses the MA
63. At this time, as shown in FIG.
Upon opening the slide, the CP 64 passes the CP 64 reference to the MA 63. The MA 63 passes the reference of the CP 64 to the AV 65 when generating the AV 65. AV65 is A
Pass the reference of V65 to CP64.

Next, the deletion of the presentation space is as follows.
Presenters can execute with or without members in the space. As shown in FIG. 10, the deletion process disables the function from CP64 to AV65 (dest.
roy) request is issued, the AV 65 responds to the request by M
A63 storage request for slide set (storage device 1
3 request to save). Furthermore, AV65 is each Scr
Issue a destroy request to een. And C
P64 notifies SM61 of the deletion request. As a result of the deletion processing of the presentation space, the state of each functional module is as shown in FIG.
The reen has disappeared.

(Operation in Presentation Space) Various operations in the generated presentation space will be described below with reference to FIGS. 12 to 26.

(Basic Operation) As described above, when the presenter (member M0) creates the presentation space, a user (audience) existing in another node on the network participates and various operations are executed. Will be. First, in order for a user (member M1) to participate in the presentation space, a procedure for connecting to the space is required as shown in FIG.

When the user 51 is network-connected to the presenter 50, the NPS program is downloaded from the presenter 50 and the AP 24A is set.
However, as described above, the AP 24A may be set in the user 51 by installing from the disk medium or downloading from the network.

Here, an initialization function module (initia) included in the downloaded NPS program is used.
control panel C on the user side
P1 is generated. Next, the host connection (IP address,
The AP 14A on the presenter side and the AP 24A on the user side are connected by the host name). In response to this connection, the control panel CP1 on the user side receives various information (attribute information) regarding the existing presentation space from the SM 61 on the presenter side. User 5
In No. 1 as well, SM, MR manager, and MA are also generated, but they are inactive because they do not generate space.

Next, the user (member M1) 51
As shown in FIG. 3, registration processing as a member of the presentation space designated via the control panel CP1 is executed. As described above, the SM 61 of the presenter 50 holds the attribute information according to the member registration, and updates the member list participating in the space by the AV 6 of the presenter 50.
Notify 5. Further, the screen S1 under the AV 65 of the presenter 50 is generated for the registered user 51. In FIG. 13, the suff of the screen S1
"0" of ix means that it is under the control of the corresponding AV65.

When the user 51, who is a member of the presentation space, exits the space, a member registration deletion request is issued via the control panel CP1 as shown in FIG. The SM 61 of the presenter 50 selects the user (member M) from the member list in response to the deletion request.
The registration of 1) is deleted, and the AV 65 of the presenter 50 is notified of the update of the member list due to the deletion. Presenter 50
AV65 of the de
Issue a stroy request. As a result, as shown in FIG. 15, the user 51 deletes the unnecessary screen S1 (inactive state).

(Transfer of Presenter Authority) In the presentation space, the presenter 50 can transfer the presenter authority (P) to the user 51 who is a member in the same space. Here, the presenter authority (P) is represented by a token (including reference to AV65, encryption key, etc.) in implementation. Therefore, presenter authority (P)
Delegation is realized by passing tokens.

Specifically, as shown in FIG. 16, the presenter 50 passes the token to the user 51, which is a member of the transfer destination, via the CP 64. SM of the presenter 50
Reference numeral 61 registers the member (M1) that is the transfer destination of the presenter authority (P) (updates the attribute information). When the presenter authority (P) transfer procedure is completed, as shown in FIG. 17, the original presenter 50 (member M0) is transferred.
The AV 65 and the MA 63 of this function will function by receiving the control from the control panel CP1 of the new presenter 51 (old user M1).

By delegating the presenter authority (P), conceptually, as shown in FIG. 27, after the member M0 first creates the presentation space S1 as the presenter (P), for example, the member M1 who is the user (A). Will function as a presenter (P). Of course, the transfer of the presenter authority (P) from the member M1 to the member M2 is not particularly limited as long as it is within the same space. In short, all the members who participated in the presentation space can function as the presenter (P).

(Delegation of Sub-Presenter Authority) The presenter 50 delegates a part of the presenter authority (P) to the user 51 who is a member in the same space, and the sub-presenter (S)
It is possible to set the authority of P). The user 51 who is authorized as a sub-presenter (SP) can open a unique window (that is, generate a screen) and control a window that can be shared by all members in the space.

Specifically, as shown in FIG. 18, the presenter 50 passes the token to the user 51, which is a member of the transfer destination, via the CP 64. SM of the presenter 50
Reference numeral 61 registers the member (M1) that is the transfer destination of the sub-presenter authority (SP) (updates the attribute information). Further, the SM 61 issues a request for generating an active view (denoted as AV1) by the sub-presenter (user 51) to the AV 65. In response to the generation request, as shown in FIG. 19, the sub presenter (user 51) has an AV
1 (copy of AV65) is generated. This AV1 is
The subordinate screen (S1) is generated for all members including the presenter 50. With this screen (S1),
The slide image displayed by the sub-presenter (user 51) in its own window can be displayed on the displays of all members. That is, as shown in FIG.
AV1 of the sub-presenter (user 51) has his CP
Image data such as a slide image is supplied to the subordinate screen (S1) based on the control from 1.

Here, in the delegation of the sub-presenter authority (SP), the reference of the AV 65 owned by the presenter 50 is not passed. Further, as the use of the sub-presenter authority (SP), there is a question and answer process between the user and the presenter described above. The sub-presenter who is the questioner (user 51)
Can display an unknown part on its own window (private screen) and simultaneously display it on the window of the presenter 50.

On the other hand, the presenter 50 can arbitrarily revoke the authority of the sub-presenter (SP) set for the user 51. When the authority of the sub-presenter (SP) is revoked, the function regarding the authority (SP) of the sub-presenter (SP) is invalidated, and the original user (A) is returned to.

Specifically, as shown in FIG. 21, the presenter 50 is a sub-presenter (SP) via the CP 64.
Delete the token given to 51. Sub-presenter (S
In P) 51, the control panel CP1 issues a destroy request to AV1. In response to this,
AV1 is displayed on the subordinate screen S1 set for all members.
Issue an estroy request. As a result, as shown in FIG. 22, the AV1 and the entire screen S1 are deleted (inactivated). Therefore, in the space, the A of the presenter 50
It is only a slide display on the screen S0 under the control of V65.

(Update of window) Presenter (P) 5
0 or the sub-presenter (SP) updates the window on the display when switching the slide image to be displayed or moving the pointer. Specifically, FIG.
As shown in, a request for slide switching or pointer movement is sent from the CP 64 to the AV 65. In response to this request, the AV 65 issues a window update request to the subordinate screen (S0). This allows the presenter 50
The display contents of the windows on the display of all members including is updated. Here, as shown in FIG.
Each screen (S0) under 5 acquires the image data relating to the slide image and the movement (positional coordinate) of the pointer from the AV 65, and executes the window display processing on the display. Each screen (S0) normally manages a cache memory, acquires already acquired image data from the cache memory, and acquires from the AV 65 when there is no hit from the cache memory.

(Slide Set Opening Operation) As described above, the presenter 50 (including the sub-presenter SP) opens the slide set 30 stored in the storage device 13 to display the slide image (slide data) required for display. ) Take out. However, in actuality, as described above, the slide set 30 is a floppy disk or a CD.
-It is stored in the storage device 13 by being installed from a disk storage medium such as a ROM or downloaded through a network. Specifically, as shown in FIG. 25, a slide set is designated by CP64. MA6
3 inquires the MR manager 62, refers to the arrangement information of the designated slide set, and extracts the slide data from the slide set. Further, the MA 63 generates an AV 65 and, as shown in FIG. 26, passes the image data which is the extracted slide data to the AV 65. AV
65 analyzes the content of the slide data, specifies the slide image selected and designated via the CP 64, and supplies it to the subordinate screen 66 (including the screen of each member).

[0067]

As described in detail above, according to the present invention, a network connecting personal computers is configured as a presentation system to which a distributed application system is applied, without requiring hardware such as a server. Only by doing so, it is possible to realize a presentation function that can be applied to a wide variety of fields.

[Brief description of drawings]

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

FIG. 2 is a conceptual diagram for explaining a basic function of a presentation function related to the embodiment.

FIG. 3 is a conceptual diagram for explaining a presentation space that can be assumed in the same embodiment.

FIG. 4 is a conceptual diagram for explaining an extended function of a presentation function related to the same embodiment.

FIG. 5 is a conceptual diagram for explaining a related presentation space of the same embodiment.

FIG. 6 is a conceptual diagram for explaining a function of a control panel related to the embodiment.

FIG. 7 is a block diagram showing a conceptual configuration of six related functional modules of the same embodiment.

FIG. 8 is a conceptual diagram for explaining a process of creating / deleting a presentation space related to the embodiment.

FIG. 9 is a conceptual diagram for explaining a process of creating / deleting a presentation space related to the embodiment.

FIG. 10 is a conceptual diagram for explaining a process of creating / deleting a presentation space related to the embodiment.

FIG. 11 is a conceptual diagram for explaining a process of creating / deleting a presentation space related to the embodiment.

FIG. 12 is a conceptual diagram for explaining a basic operation in a presentation space related to the same embodiment.

FIG. 13 is a conceptual diagram for explaining a basic operation in a presentation space related to the same embodiment.

FIG. 14 is a conceptual diagram for explaining a basic operation in a presentation space related to the same embodiment.

FIG. 15 is a conceptual diagram for explaining a basic operation in a presentation space related to the same embodiment.

FIG. 16 is a conceptual diagram for explaining a pre-center delegation operation in a presentation space related to the embodiment.

FIG. 17 is a conceptual diagram for explaining a pre-center delegation operation in a presentation space related to the embodiment.

FIG. 18 is a conceptual diagram for explaining a sub presenter delegation operation in a presentation space related to the embodiment.

FIG. 19 is a conceptual diagram for explaining a sub-presenter delegation operation in a presentation space related to the embodiment.

FIG. 20 is a conceptual diagram for explaining a sub presenter delegation operation in a presentation space related to the embodiment.

FIG. 21 is a conceptual diagram for explaining a sub presenter delegation operation in a presentation space related to the embodiment.

FIG. 22 is a conceptual diagram for explaining a sub presenter delegation operation in a presentation space related to the embodiment.

FIG. 23 is a conceptual diagram for explaining a window update operation in a presentation space related to the same embodiment.

FIG. 24 is a conceptual diagram for explaining a window updating operation in the presentation space related to the embodiment.

FIG. 25 is a conceptual diagram for explaining a slide opening operation in a presentation space related to the embodiment.

FIG. 26 is a conceptual diagram for explaining a slide opening operation in a presentation space related to the embodiment.

FIG. 27 is a conceptual diagram for explaining transfer of presenter authority in a presentation space related to the embodiment.

[Explanation of symbols]

1 ... Hub 10 ... Personal Computer (Presenter P) 11 ... Network Interface Card (NI
C) 12 ... Display device 13 ... Storage device 14 ... Platform 14A ... NPS program (first application
Module) 20 ... Personal computer (User A) 21 ... Network interface card (NI
C) 22 ... Display device 23 ... Storage device 24 ... Platform 24A ... NPS program (second application
module)

Claims (9)

[Claims] 1. A data sharing method applied to a network system configured by connecting a plurality of computers, wherein each module for managing, transmitting / receiving, and displaying shared data is generated on the network system. And a function for delivering the shared data to each computer connected to the network system, and a function for displaying the shared data by a display unit of each computer. Data sharing method. 2. A network interface unit for connecting to a plurality of computers to form a network system, and a storage unit for storing shared data to be shared with each computer on the network system. And a means for generating each module for managing, transmitting / receiving, and displaying the shared data on the network system. 3. A computer-readable storage medium provided with network interface means for connecting to a plurality of computers to form a network system, wherein shared data is managed and transmitted / received on the network system. And a function of generating each module for displaying, a function of delivering the shared data to each computer connected to the network system, and displaying the shared data by a display unit of each computer. And a storage medium that stores a program that is set to be executed by the computer. 4. A network interface unit for connecting to a plurality of computers to form a network system, and a storage unit for storing shared data to be provided to and shared with each computer on the network system. And a means for generating each module for realizing a presentation function of managing, transmitting / receiving, and displaying the shared data on the network system. 5. A presentation method applied to a presentation system for connecting a plurality of computers to form a network system and transmitting / receiving shared data on the network system, wherein the shared data is managed in the computer. A first application module for realizing a presenter function of transmitting, receiving, displaying, and displaying the shared data between the presenter function and a download function included in the first application module. Generating a second application module in the computer for realizing a user function of transmitting and receiving and displaying the shared data selected by the presenter function on the network system. And a step of transmitting to each computer having a user function. 6. A computer-readable storage medium that realizes a presentation function of transmitting and receiving shared data on a network system by connecting a plurality of computers, the storage medium comprising: Between a step of generating a first application module for realizing a presenter function of managing, transmitting / receiving, and displaying shared data, and a download function included in the first application module, between the presenter function. Generating a second application module in the computer for realizing a user function of transmitting and receiving the shared data and displaying the shared data, and the shared data selected by the presenter function in the network system. And a step of transmitting the program to each computer having the user function on the computer, and storing a program set to be executed by the computer. 7. A distributed system for connecting a plurality of computers to form a network system and distributing and processing shared data on the network system, wherein transmission and reception of the shared data are mutually performed on the network system. Means for causing each computer to function as a plurality of members for executing the above, a means for generating a distributed function for delivering and displaying the shared data to each computer, and a function related to the distributed function A distributed system comprising means for generating a display function for displaying the shared data on each computer. 8. A presentation method applied to a presentation system for connecting a plurality of computers to form a network system and transmitting / receiving shared data on the network system, wherein the shared data is managed in the computer. A first application module for realizing a presenter function of transmitting, receiving, displaying, and displaying, and a second application for realizing a user function of transmitting and receiving the shared data to and from the presenter function and displaying the shared data. Generating a module, connecting the first application module and the second application module, and in the case of the presenter function, the shared data selected and specified, to the user function on the network system. And transmitting the shared data transmitted from the computer having the presenter function in the case of the user function by connecting the first application module and the second application module to each other. A presentation method comprising the steps of receiving and displaying. 9. A computer-readable storage medium that realizes a presentation function of transmitting and receiving shared data on a network system by connecting a plurality of computers, the storage medium comprising: A first application module for realizing a presenter function of managing, transmitting / receiving, and displaying shared data, and a first application module for realizing the user function of transmitting / receiving and displaying the shared data with the presenter function. Generating a second application module, connecting the first application module and the second application module, and in the case of the presenter function, selecting the designated shared data on the network system. Of the above Transmitting to each computer having a user function, the first application module and the second application module are connected, and in the case of the user function, transmitted from the computer of the presenter function. A step of receiving and displaying the shared data, the storage medium storing a program set to be executed by the computer.