JP2003289515A - Lecture system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To record WEB materials which are used during a lecture on a WWW server as a correspondence course without loading a burden to a recording medium of a server device, and to reproduce the correspondence course easily to watch in the case of reproduction. <P>SOLUTION: A lecture server device 100 records the video and audio of participants of the lecture received from a plurality of lecture terminals 200 and the URL address of WEB materials registered in a WWW server 400 on a network and distributed during the lecture as a correspondence course together with the lapse of time from the start of the lecture and when the start of reproduction of the correspondence course is instructed from a lecture terminal, the reproduction is started to transmit the correspondence course to the lecture terminal. At the same time, the URL address is reported to the lapse of time from the start of the lecture. In the lecture terminal, when the WEB materials on the WWW server are accessed based upon the reported URL address, the WEB materials at a time point of use for the lecture are reproduced. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teacher terminal and a student terminal.
The teacher (lecturer) gives lectures to multiple students using the end
Lecture system, especially for lecture participants
Regarding the function of viewing lecture materials. 2. Description of the Related Art In actual lectures, various lecture materials are white.
Projection on the board or screen.
In the lecture system as well, video materials used during the lecture
Is stored in the video material database of the server device, and
Lectures can proceed smoothly if they can be displayed during lectures on each lecture terminal.
And play it after the lecture
It is convenient if it can be displayed. As a conventional example of this kind, for example, Japanese Patent Application Laid-Open
Japanese Patent No. 69331 discloses recording a conference in a large-capacity DVD-R.
How to record on AM, play back and display on each conference terminal
A law has been proposed. Further, as another conventional example, for example, a micro
Data conferencing called Software Net Meeting
It has been known. In this data conference, the data conference app
Application to enable communication between conference participants.
Application sharing, whiteboard sharing, chat,
Functions such as file transfer can be used. [0005] By the way, network
Lecture on WEB materials registered on the WWW server on the web
When used as material inside, this WEB material itself
Is recorded on the lecture server as part of the lecture record,
This web material can also be played at the time of playing the good record, so more
Realistic lecture record playback is possible and convenient. However
While the web material on the WWW server is
Recording on the server device reduces the load on the recording medium of the server device.
There is a problem that becomes. Here, not the WEB material itself, but the
If the URL address is recorded instead, the server device
The load on the recording medium can be reduced. However,
When each URL address of many web materials is recorded,
Which web material is used in the scene of the lecture when playing the lecture record
There is a problem that it is difficult to know whether or not it has been lost. Further, in the conventional data conference, the conference
Participants can register materials they want to share before the conference starts.
Cannot be recorded.
Must be registered using an application.
When sharing on a TCP / IP network,
Materials are distributed via multicast or unicast
Will be distributed to all participants, so the distribution network
Impact on traffic and delivery time. further,
Multiple applications for sharing documents start up
Therefore, the number of windows increases, making operation difficult. [0008] In view of the above problems, the present invention has been used during a lecture.
Of WEB data on the WWW server used by the server
It can be recorded as a lecture record without burdening the medium
Be able to play the lecture notes easily
The purpose is to provide a lecture system that can do. [0009] The present invention achieves the above object.
In order to implement this, multiple lecture terminals and lecture server
Connected via a work, and the lecture server
Video and audio of lecture participants received from a number of lecture terminals
A multi-point lecture system that combines and distributes to the plurality of lecture terminals
The lecture server device, as a lecture record,
Video of lecture participants received from the plurality of lecture terminals and
Voice and registered on the WWW server on the network
Web materials distributed during the lecture
Write the URL address together with the elapsed time from the start of the lecture
Means for recording a lecture record to be recorded; and
Playback of a recorded lecture record
And sends it to the lecture terminal,
Notification of the URL address that has elapsed since the lecture started
A lecture record reproducing means for transmitting the notice.
W on the WWW server based on the obtained URL address
EB materials have been made accessible. [0010] With the above configuration, the URL addition of the WEB material is performed.
Server is registered in the web material database.
Register WEB materials without burdening the recording media of the device
can do. Also, when playing the lecture record, the URL
Notification to the lecture terminal at the elapsed time from the start of the lecture.
Therefore, the lecture terminal is based on the notified URL address.
To access WEB materials on the WWW server,
Therefore, reproduction can be performed easily. BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment will be described. FIG. 1 shows a lecture system according to the present invention.
It is a lineblock diagram showing one embodiment of a stem. [0012] In the system shown in FIG.
For a server device (also simply referred to as a server device) 100
Up to eight lecture client terminals (hereinafter simply referred to as “terminals”)
200) is a LAN or WAN (hereinafter LAN / WA).
N) 300. In the server device 100
A hard disk (HD) 120 as a mass storage device
Is provided. In addition, LAN / WAN 300 is
Can be connected to the WWW server 400 in the
The definition server device 100 is also a WWW server. FIG. 2 shows a terminal in the system shown in FIG.
200 is on the WWW server 400 (and the lecture server
The operation of accessing the web material of
The terminal 200 has a browser. And the lecture server equipment
100 is the WEB material name and UR on the WWW server 400.
Web material data for registering L address correspondingly
Has a base. In addition, this web material database
Then, the user's own web material is registered. WEB materials are good
Files, images such as JPEG, GIF, BMP
Is a file that contains The procedure (1) in FIG.
The procedure to "see" the web material on 00 is shown, and the procedure (2)
Indicates a “show” procedure. (1) Client of terminal 200a on the viewing side
Selects the web material name on the WWW server 400
The terminal 200a operates the lecture server by operating the “view” button.
When the web material name is sent to the device 100, the lecture server
The device 100 sends the URL address in response.
As a result, the terminal 200a
You can access EB materials. (2) Client of the terminal 200a to be shown
URL of the web material on the WWW server 400
Select the address of the other terminal 200b
Operate the "I want to show" button to the client
Sends the URL address to the lecture server 100.
When sent, the lecture server device 100 is displayed on the terminal 2
00b of the URL address. This
The terminal 200b to be shown is the WWW server 400
Because you can access the web material above,
The client of 200a is the client of another terminal 200b
To show the web material you want to show. As described above, the WEB on the WWW server 400
While viewing the material (during access), the lecture server 1
There is no burden of 00. Referring to FIG. 3, server device 100 will be described.
explain in detail. This server device 100 is software
And communication control means 10 constituted by hardware
1, user authentication means 102, reservation management means 103, server
Control means 104, character synthesizing means 105, video synthesizing means
106, voice format conversion means 107, voice synthesizer
Stage 108, WWW server means 111, storage means 113,
And the load monitoring control means 115 and the
User management database 109, reservation management database
Source 110, web material database 112, video data
Database 114 and screen composition definition database 116
Have. The communication control means 101 is a client terminal 2
As data / control command 1 received from 00, video
Voice data, user authentication data, reservation registration information, terminal information
Information, video material data, WEB material data, URL data
Data, enlarged video request command and other control data
And sends it to the client terminal 200
Video / audio data, HT as data / control command 2
ML data, lecture information data, user authentication result notification,
It also sends other control data. Communication control means 101 and user authentication means 10
Between two, user authentication data and user authentication result notification 3
Are exchanged, and the communication control means 101 and the reservation management means 1
03, the reservation information data 4 is exchanged. Through
Between the communication control means 101 and the server control means 104.
The request data 5 is exchanged, and the communication control unit 101
The character information data 6 is sent to the character synthesizing unit 105.
There is no video between the communication control means 101 and the video synthesizing means 106.
The image data and the composite video data 7 are exchanged,
From the synthesizing means 105 to the image synthesizing means 106.
Is sent. Voice control from the communication control means 101
GSM voice data 8 is sent to mat conversion means 107.
The voice synthesizing means 108 sends the information to the communication control means 101.
The generated GSM audio data 9 is sent. Audio format change
Between the conversion means 107 and the speech synthesis means 108.
Composed voice data and GSM synthesized voice data 11 exchange
Is done. User authentication means 102 and user management data
User authentication data 12 is exchanged with the base 109.
The reservation management means 103 and the reservation management database 1
10, the reservation information data 13 is exchanged.
Between server control means 104 and WWW server means 111
Now, HTTP request data and HTTP response
The data 14 is exchanged, and the server control unit 104
Between the voice synthesis means 108 and the voice synthesis control data 15,
Exchanged. The video synthesizing hand from the server control means 104
The video composition control data 16 is sent to the stage 106.
You. Between server control means 104 and storage means 113
Storage control data and read control data 17 are exchanged
Between the video synthesizing means 106 and the storage means 113
Stored video data and read-out video data 18 are exchanged
Is done. Between the voice synthesis means 108 and the storage means 113
Indicates that the stored voice data and the read voice data 19 are exchanged.
Is WWW server means 111 and WEB material data
Database 112 and web data
Data 20 is exchanged, and the storage means 113
Video / audio data and video materials between the base 114
Data 21 is exchanged. Also, the storage means 113
Web materials and data are exchanged with the Web material database 112.
And WEB material data 20 are exchanged. Video synthesis
Between the column 106 and the screen composition definition database 116
The screen composition definition data 24 is exchanged. Load monitoring system
The control means 115 monitors the load with the LAN / WAN 300
Packet data and load monitoring response packet data 2
2 to exchange the rate control instruction data 23
Send to control means 101. The basic functions of the server device 100 will be described. -Proxy function: WWW server function. LAN / WAN3
Is a multipoint lecture HTTP request or a normal
Internet access request, and in the latter case,
Deliver to Internet proxy. -User authentication function: Is the user registered in advance?
Determine whether or not.・ Video composition / delivery function: Specify video from each terminal 200
Combined into one with the layout set and distributed to all terminals 200
I do. -Voice synthesis / delivery function: Specify voice from each terminal 200
And distribute to all terminals 200
I do.・ Character composition function: A slash at the bottom of the video from each terminal 200
The chair data is combined into one frame. Recording function: video and sound from each terminal 200
The voice is recorded on the HD 120. Recording / playback function: video / audio data recorded on HD 120
The data is reproduced and distributed to each terminal 200. download
If so, convert to MPEG-1 format and download
You. Rate control function: network to which terminal 200 is connected
Investigate the work bandwidth and determine the video bit rate according to the bandwidth.
And a voice coding method. Next, detailed functions will be described. <Lecture reservation>-Lecture registration: Function to register the lecture to be held. At the time of reservation
The content to be registered in is the date / time / name of lecture held / comment / participation
Video materials used for user authentication settings / lectures. -Delete lecture: Delete the lecture reservation contents that have already been registered.
function.・ List of registered lecture contents: Date of registered lecture contents
Function to display as a list of contents of the specified day. -Lecture participation authentication: When a user attends a lecture, the lecture
Judge whether it is registered in righteousness, it is not registered
The ability to refuse lecture participation in cases. <Web data> Web material registration: URL used as WEB data
Register the name associated with the dress as "Web material name"
Function to do. -Delete WEB material: Delete the registered WEB material name
Function. -Web material list display: registered in server device 100
A function to display a list of existing web material names.・ Web material display: Select the registered Web material name
WEB of URL address associated with WEB material name
Function to display page information. If you are in a lecture,
The rear is reduced and displayed.・ Reflection of WEB materials: Contents of currently displayed WEB materials
A function to reflect to other lecture participants. <Video material>-Video material registration: DV (abbreviation for digital video: hereinafter the same)
E) Convert the video recorded in the camera to MPEG-1
Server device 100. -Deletion of video materials: Deletes video materials that have already been registered.・ Video material preview (play / pause / fast forward / winding)
Rewind): Play the already registered video material, pause playback,
Fast forward and rewind functions.・ Video material list display: List of already registered video materials
Function to display.・ View video materials (play / pause / fast forward / rewind)
S): Synthesizing and distributing the registered video materials during the lecture
The ability to refer alone by that.・ Show video material: Synthesize registered video material during lecture
And distribute it to everyone. <Lecture record> ・ Record of lecture record: video / audio, video material, W currently being lectured
A function of recording EB materials on the server device 100.・ Lecture record download: Registered on server device 100
The lecture record in HTML format on the recording medium of the terminal 200.
Ability to download. -Lecture record browsing: Lecture record registered on server device 100
A function to distribute while receiving rate control. -Lecture record list display / deletion: registered on server device 100
A function to list and delete deleted lecture records. -Lecture record playback (Web material playback): Downloaded lecture
A function to refer to the right list with a web browser. <Display>-Lecture participant name display: Participant name is displayed in a part of the video display area.
Function to combine.・ Lecture information display: Lecture information currently being held (lecture name / held
Function to display date / time / organizer name / participant name). Image enlargement / reduction [0030] Next, the terminal 200 will be described in detail with reference to FIG.
I will explain it. This terminal 200 is a voice input / output unit 20
1. Image input means 202, WWW display means 203, operation
Input means 204, audio format conversion means 205,
Image format conversion means 206, WWW control means 20
7, audio codec control means 208, video codec control
Control means 209, terminal control means 210, storage means 211,
It has a recording medium 212 and communication control means 213,
The control means 213 is a LAN / WAN 300 (see FIGS. 1 and 3).
Connected). The audio input / output means 201 sends an audio format
PCM voice input signal 31 is sent to
From the audio codec control means 208 to the audio input / output means.
An audio output signal 32 is sent to 201. Video input means
202 to the video format conversion means 206
An image signal 33 is sent. WWW control means 207 to WW
The W display means 203 displays the HTML file control information 34.
Sent from the WWW display means 203 to the WWW control means 20
7, the CGI form information 35a is sent. Operation input
From the means 204 to the WWW display means 203
The data 35b is sent. The audio from the audio format conversion means 205
The codec control means 208 includes a PCM downsampler.
Audio data 36 is sent to the
The video codec control means 209 sends the DV video
Data 37 is sent. Video codec control means 209
From the MPEG-1 video data to the WWW control means 207.
38 is sent. Terminal control means from WWW control means 207
The control data 39 is sent to the stage 210,
Between the control data 210 and the storage means 211, the control data 40
Exchanged. Between the storage means 211 and the recording medium 212
Intermediate data for video / audio data, video materials and WEB materials
(HTML) 41 is exchanged. Communication control from the voice codec control means 208
The GSM voice data 42 and the like are sent to the control means 213,
From the communication control unit 213 to the audio codec control unit 208
Is sent GSM voice data 43. Video codec
From the control means 209 to the communication control means 213, MPEG-
1 The video data 44 is transmitted and is transmitted from the communication control unit 213.
The image codec control means 209 stores MPEG-1 video data.
Data 45 is sent. Terminal control means 210 and communication control means
213, the control data 46 is exchanged. Next, the main functions of the terminal 200 will be described.
You.・ Audio data distribution: audio from DV camera / microphone input
Function to capture and distribute audio data to server device.
(Sound input PCM data from DV camera / microphone input
Is converted to GSM after downsampling, and the GSM
Packetized by frame and distributed by HTTP protocol
I do.・ Audio playback: ・ Video data distribution: Video from DV camera / USB camera
A function to capture video and distribute video data to server devices.
(Video data from DV camera / USB camera in DV format
Is converted to MPEG-1, and the frame unit of MPEG-1
And packetized by the HTTP protocol. Next, referring to FIG. 5 to FIG.
The display screen will be described. <Menu screen> On the menu screen, as shown in FIG.
"Lecture reservation screen display button", "Video material registration screen display"
Button "," Web material registration screen display button "," Lecture "
Button for viewing the record download screen "," Currently being held
Button to participate in the lecture of
Display area '', `` State of whether or not a lecture is currently being held
Area for displaying the status "," Request for lecture information currently being held "
Button '', `` D
Rear "etc. are displayed. <Reservation screen> “Lecture reservation screen” on the menu screen shown in FIG.
When the “Surface Display Button” is operated, the lecture as shown in FIG.
The reservation screen is displayed, and you can reserve a lecture from this lecture reservation screen
can do. <Lecture Screen> On the menu screen shown in FIG.
When the “Lecture Start Button” is operated, as shown in FIG.
The lecture screen is displayed. This lecture screen shows "Lecture Information Table
Display area '', `` video material display area '',
"Show" button, "Show" button, "Registration WE"
B material list display area "and the selected WEB material
Button, the lecture recording start / stop button,
-"Go to menu" button to return to the screen, "Lecture video
A "display area" is provided. "Lecture video display area
As shown in detail in FIG. 8, approximately half of the lower side is 4 × 2
= Split into 8 windows, each split window has
The video of each of the eight lecture participants is displayed. Ma
The upper half is divided into 2 × 1 = 2 windows.
The right window displays the information you want to see or
The video material shown to the participants is displayed in the left window
Displays an enlarged image of the video material. <Lecture Screen (Video Material Display)>
"View" button for the selected video material on the lecture screen and
When the “show” button is operated, an image as shown in FIG. 9 is displayed.
The lecture screen for image material display is displayed. In this lecture screen
Is displayed in the lecture video display area.
In addition to the display of the lecture screen shown in FIG.
Play / Pause / Stop / Slider / End video material "
Each button is displayed. <Lecture screen (Web display)> On the lecture screen shown in FIG.
When the "View" button is operated on the selected WEB material,
A web-based lecture screen as shown in FIG. 10 is displayed.
You. This lecture screen includes the display of the lecture screen shown in FIG.
In addition, the "Web page display area"
Image display area "," URL input field "," Web page "
Operation button ", the displayed web page to another terminal
"Show" button, "End WEB document display" button
Is displayed. <Video material registration screen (during preview)>
The video material registration screen during the review is as shown in FIG.
List of video materials registered on the server 100,
The video material list above, the video material list in the external recording device,
Move / Delete button for selected video material, "Go to menu"
Button, video material playback display area, slider bar, video
Image material play / pause / stop button, video material name input field
Is displayed. <Web material registration screen> Web material registration screen
Enter the name of the WEB document to be registered on the screen as shown in FIG.
Field, input web material name registration button, already registered
Web material name display list, display / deletion from Web material list
Remove button, "go to menu" button, enter URL address
Columns, web page display area, web operation buttons, etc.
Is displayed. <Lecture record browsing screen (download)> Dow
Fig. 13 shows the screen for browsing the lecture record for downloading.
Button to go to the menu,
A, Download / View / Delete button from lecture list
And the download destination designation area are displayed. <Lecture record browsing screen> The lecture record browsing screen is shown in FIG.
Sea urchin information display area, video / web material display mode
Mode switching button, slider bar, lecture record play / pause
/ Stop button, button to browse and download screen, lecture
A just-in-time video display area and the like are displayed. <Lecture Record Viewing Screen (Web Display)> WEB
As shown in FIG. 15, the lecture record browsing screen shown in FIG.
In addition to the display shown in the above, the URL address input field, WEB page
Display area (instead of the lecture video display area)
Lecture record video display area, web page operation button
Is displayed. <Lecture Record> Next, referring to FIG.
The process of starting the recording of the lecture record of the device 100 will be described. First, the end
End 200 is the lecture when the "record lecture record start" button is operated
A record registration start command is transmitted to the server device 100.
In the server device 100, the communication control means 101
Receive command (lecture record recording start command) from 0
And instruct command analysis to server control means 104
(Step S1), the server control means 104
When the command is analyzed as the start
A recording instruction is issued to the storage means 113 (step S2).
Then, the storage unit 113 records the video / audio during the lecture
To the video database 112 on the HD 120
Start (step S3). <Video Material Registration> Next, referring to FIG.
The process of registering the video material by the server apparatus 100 will be described. Ma
Terminal 200 operates the "video material registration" button.
And a video material registration command to the server device 100
You. In the server device 100, the communication control means 101
Receive command (video material registration command) from 200
Command analysis to the server control means 104.
(Step S21), and received by the server control unit 104.
If the command is analyzed as a video material registration command, video material
Is issued to the storage means 113 (step
S22). Then, the storage means 113 stores the video material registration frame.
The video material specified by the
Records the management data to the user 114
It is recorded in the management database 109 (step S23). <Video Material Reproduction> Next, referring to FIG.
A description will be given of a process of reproducing video material by the server apparatus 100. Ma
Terminal 200 operates the “view” button,
A fee reproduction command is transmitted to server device 100. server
In the device 100, the communication control means 101
When a command (video material playback command) is received,
Command analysis to the server control means 104 (step
(Step S31), the server control means 104
Analyzed with video material playback command, access right judgment instruction
Is issued to the server control means 104 (step S32),
The server control means 104 determines the access right of the user
(Step S33). In the case of "with access right",
The storage means 113 is instructed by the video material reproduction start command
Refer to the user management database 109 for video materials.
The content is reproduced from the video database 114 (step S3).
4 → S35), then play the reproduced video and audio
The image is synthesized by the image synthesizing unit 106 and the voice synthesizing unit 108.
(Step S36) Then, this is transmitted to the communication control unit 101.
To the terminal 200 (step S37). other
In the case of "no access right", the server control means 1
04 generates a transmission command of “no access right” (S
(Steps S34 → S38), and then the communication control means 1
01 to the terminal 200 (step S39). <Web Material Registration> Next, referring to FIG.
A process of registering WEB materials by the server device 100 will be described.
First, the terminal 200 operates the “register web material” button.
Sends a Web material registration command to the server device 100
I believe. In the server device 100, the communication control means 101
A command (Web material registration command) from the terminal 200
Upon reception, the command is transmitted to the server control unit 104.
Analysis (step S71), and the server control means 104
Parses the received command as a web material registration command
Accumulating means 11 for writing a WEB material management table
3 (step S72). And storage means 1
13 creates a WEB material management table and stores it on the HD 120
Is recorded in the WEB material database 112 (step
S73). <Web Material Event Registration> Next, FIG.
Refer to record of Web material event of server device 100
The processing will be described. First, the terminal 200 reads “Web
When the "Record" button is operated, the Web command
Is transmitted to the server device 100. In the server device 100
Means that the communication control means 101 issues a command (W
EB material recording control command)
Command analysis to the control means 104 (step
S41), the server control means 104 WE the received command
Analyzed with B material recording control command, the video being displayed
Issues an instruction to record the URL of the material to the storage unit 113
(Step S42). Then, the storage means 113 stores
Lecture information (lecture name /
Event date / organizer name / participant name) and the
The URL address and the time elapsed since the lecture started
0 in the web material database 112 (step
Step S43). <Show web material> Next, referring to FIG.
Notification processing of the WEB material event of the server device 100
explain. First, the "show" button is operated on the terminal 200.
When this is done, the Web command URL notification control command is sent to the server.
Transmit to the device 100. In the server device 100, the communication system
The control means 101 issues a command (WEB data U
RL notification control command), the server control
Command analysis is instructed to the stage 104 (step S5).
1), the server control means 104 transmits the received command to a web resource
When analyzed as a charge URL notification control command, the URL notification
A command generation instruction is issued (step S52). Then, the server control means 104 sends the URL
The communication control means 10 generates an intelligent command and sends its transmission instruction.
1 (step S53), and then the communication control unit 1
01 transmits this URL notification command to another terminal 200
(Step S54). This allows you to “show”
Of the web material being displayed on the terminal 200 on which the user has operated
Since the L address is displayed on another terminal 200, the other terminal 200
The end 200 receives the URL address and the WWW server 400
(And access to the web material of the server device 100)
Can be displayed. <Lecture Record Reproduction> Next, referring to FIG.
A description will be given of a lecture record reproduction process of the server 100. First, the terminal
When the “Play Lecture Record” button is operated, 200
The raw command is transmitted to the server device 100. Server device
In 100, the communication control means 101
When a command (lecture record playback command) is received, the server
Means 104 to instruct command analysis (step S
61), the server control means 104 records the received command in the lecture
When analyzed with playback command, lecture record and WEB material event
Issue a readout instruction to the storage means 113 (step
Step S62). Next, the storage means 113 stores the lecture record and the WEB resources.
Charge event is read from the HD 120 (step S6)
3), and then the server control means 104
Judge whether it is the elapsed time (reference time)
S64). In the case of elapsed time (reference time),
The server control means 104 generates a URL notification command and
Is issued to the communication control means 101 (step S
65) Then, the communication control means 101
Command to the terminal 200 (step S66), and
Then, the process proceeds to step S67. Elapsed in step S64
If it is not time (reference time), go directly to step S67
move on. In step S67, the video and audio of the lecture record
Synthesized by video synthesizing means 106 and audio synthesizing means 108
And issues a distribution instruction to the communication control means 101.
While the communication control means 101 performs rate control,
Transmit the synthesized video and audio to terminal 200 (step
S68). Therefore, after the lecture participant finishes the lecture,
Video material is displayed during the lecture
When the URL is registered as a web material, the URL
Is notified, and a reproduction instruction is given at the URL address.
By doing so, it is possible to play and display WEB materials
You. In steps S65 and S66, the URL notification is issued.
Instead of sending a command to the terminal 200, its WEB
Automatically play and display material based on URL address
You may do so. Here, in FIG. 1, eight terminals 200 and 1
Although only one server device 100 is shown in FIG.
As shown in FIG. 3, arbitrary 8 terminals of N terminals 200 and M terminals
One lecture using any one of the server devices 100
Can be held. As described above, according to the present invention, W
URL address of EB material to WEB material database
The registration will be a burden on the recording media of the server device
Web materials can be registered without any
At the time of birth, the URL address is the elapsed time from the start of the lecture
The UR that the lecture terminal was notified
Web data on the WWW server is uploaded based on the L address.
Accessible and therefore playable
It can provide a lecture system that can do

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing an embodiment of a lecture system according to the present invention. FIG. 2 is an explanatory diagram showing a procedure for accessing WEB materials in the system of FIG. FIG. 4 is a block diagram showing the client terminal shown in FIG. 1 in detail. FIG. 5 is an explanatory diagram showing a menu screen of the terminal shown in FIG. 1. FIG. 6 is a lecture reservation of the terminal shown in FIG. FIG. 7 is an explanatory diagram showing the lecture screen of the terminal of FIG. 1. FIG. 8 is an explanatory diagram showing the lecture video display area of FIG. 7 in detail. FIG. 9 is a lecture screen of the terminal of FIG. FIG. 10 is an explanatory diagram showing a lecture screen (Web display) of the terminal shown in FIG. 1. FIG. 11 is an explanatory diagram showing a video material registration screen (during preview) of the terminal shown in FIG. Explanatory diagram showing a WEB material registration screen of the terminal of FIG. 1 [FIG. FIG. 14 is an explanatory diagram showing a lecture record browsing screen (download) of the terminal of FIG. 1. FIG. 14 is an explanatory diagram showing a lecture record browsing screen of the terminal of FIG. 1. FIG. 15 is a lecture record browsing screen of the terminal of FIG. )
FIG. 16 is a flowchart showing a process of recording a lecture record of the server device of FIG. 1. FIG. 17 is a flowchart showing a process of registering video material of the server device of FIG. 1. FIG. FIG. 19 is a flowchart showing a process of reproducing video material. FIG. 19 is a flowchart showing a process of registering WEB material in the server device of FIG. 1. FIG. 20 is a flowchart showing a process of recording event of a web material of the server device of FIG. 1 is a flowchart showing a web material event notification process of the first server device. [FIG. 22] A flowchart showing a lecture record playback process of the server device of FIG. 1. [FIG. 23] A configuration diagram showing an application example of the lecture system of FIG. Description 100 server device (lecture server device) 112 WEB material database 114 video material database 120 hard disk HD) 200 client terminal (lecture client terminal)
(Lecture terminal or simply terminal) 300 LAN / WAN 400 WWW server

Continuation of front page    (72) Inventor Yasuo Hogita             Kanagawa Prefecture Yokohama City Kohoku Ward Tsunashima Higashi 4-3-1             No. Matsushita Communication Industrial Co., Ltd. F term (reference) 2C028 BB04 BC05 BD03                 5C064 AA02 AB03 AB04 AC04 AC06                       AC12 AC16 AC22 AD07 AD14

Claims (1)

Claims 1. A plurality of lecture terminals including a teacher terminal and a student terminal and a lecture server device are connected via a network, and the lecture server device receives the lecture participants from the plurality of lecture terminals. A lecture system for synthesizing the video and audio of the lecture participants, and delivering the lecture and lecture data to the plurality of lecture terminals. Lecture record recording means for recording the URL address of the WEB material registered in the above WWW server and distributed during the lecture together with the elapsed time from the start of the lecture; When the instruction to start the lecture record is received, the reproduction is started and transmitted to the lecture terminal, and the recorded URL address is opened. A lectures reproducing means for notifying the elapsed time from the time, lecture system the lecture terminal has made accessible WEB article on the WWW server on the basis of the notified URL address.