CN104537907B - A kind of intelligent collaboration discussing system - Google Patents
A kind of intelligent collaboration discussing system Download PDFInfo
- Publication number
- CN104537907B CN104537907B CN201510035134.1A CN201510035134A CN104537907B CN 104537907 B CN104537907 B CN 104537907B CN 201510035134 A CN201510035134 A CN 201510035134A CN 104537907 B CN104537907 B CN 104537907B
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- video
- display
- controller
- display device
- communication channel
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
- G09B5/14—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations with provision for individual teacher-student communication
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a kind of intelligent collaboration discussing system, including display device, video matrix, first communication channel, the second communication channel and controller, display device sets up communication connection by first communication channel and video matrix, the controller sets up communication connection by the second communication channel and video matrix, the controller is built-in with video module, display control module and output module, video module and display control module are electrically connected with output module respectively, and the controller is provided with least two selection display button；Selection display button and display control module electrical connection；Mobile terminal sets up communication connection by USB interface and video matrix, and the selection display button on controller is used to select display device to be shown or contrasted display, and initiates to discuss.The present invention can show in selected display device or contrast that display will be discussed video information, and contrast is discussed, interactive stronger, teaching or session discussing it is better.
Description
Technical field
The present invention relates to a kind of for meeting interactive discussion or the collaboration discussing system of interactive teaching, more particularly to one kind exists
The intelligent collaboration discussing system of convenient switching display PowerPoint, belongs to interactive device neck in interactive teaching or session discussing
Domain.
Background technology
Interactive teaching is the main trend of current educational development, and so-called interactive education system is by existing computer intelligence
Technology application integrates data communication in teaching classroom, abundant multimedia teaching and courseware development management is supported, to reach
To classroom efficiency is improved, the effect of course content is enriched.The application of common interactive education system has classroom to test, classroom ballot
Deng thering is interactive education system more quickly to carry out classroom test, classroom and vote, and feedback result is carried out effective
Treatment.There is the application of many interactive education systems in addition, such as the arrangement of operation, problem are raced to be the first to answer a question.Interaction religion
It is that the work of the cumbersome repetition that replaces conventional by computer technology improves classroom instruction matter that the purpose of system is exactly
Amount.It is still teacher-but existing interaction teaching device, simply substitutes traditional teaching equipment with computer technology
Row mode, participant can not easily carry out interactive discussion, it is impossible to easily carry out PowerPoint displaying, it is impossible to easily carry out
PowerPoint is contrasted, it is impossible to embody the effect of interactive teaching.In addition, interactive meeting is also the meeting that active conference becomes more and more popular
Pattern, but it is still leader-employee's pattern during whole meeting discussion, and the employee of participation can not easily carry out interaction
Discuss, it is impossible to easily carry out PowerPoint displaying, it is impossible to easily carry out PowerPoint contrast, it is impossible to embody the interaction of meeting
Effect, meeting inefficiency.For the above-mentioned problems in the prior art, need to develop a kind of interactive in interactive teaching or meeting
The intelligent collaboration discussing system of convenient switching display PowerPoint in discussion.
The content of the invention
It is mutual the invention aims to change the teacher-student centered on teacher that still exists in current interactive teaching
A kind of leader-employee's the pattern being still present during dynamic model formula, and the meeting discussion of interactive meeting, there is provided intelligent collaboration
Discussing system.It is mutual equality using each participant of the collaboration discussing system, such as academics and students, leader and employee
, can easily carry out interactive discussion, easily carry out oneself PowerPoint displaying, easily by the PowerPoint of oneself with
The PowerPoint of other participants is contrasted, the favourable sharp property and interest for improving participant, can preferably embody interactive teaching
With the effect of interactive meeting, the efficiency of study and session discussing is improved.
The technical scheme is that providing a kind of intelligent collaboration discussing system, its designing points is：Including display
Device, video matrix, first communication channel, the second communication channel and controller, display device passes through respectively described at least two
The VT of first communication channel and video matrix sets up communication connection, and the controller passes through the second communication channel
Video signal input terminal with video matrix sets up communication connection, and the controller is built-in with for regarding of sending mobile terminal
Frequency signal transmission to the video module of video matrix, for the video information that will be shown on mobile terminal in selected display dress
The display control module and output module for being shown are put, video module and display control module are electrically connected with output module respectively
Connect；The controller is provided with least two is used for the video information that will be shown on mobile terminal in selected display device
The selection display button for being shown, the selection display button and the display control module are electrically connected；The display control
The input of module is connected with the data cable electrically connected with mobile terminal.
The mobile terminal of the participant for discussing is cooperateed with to set up communication connection with the video module of controller respectively, by control
The video information that selection display button on device shows the mobile terminal being connected with the controller is transmitted through video matrix
Shown in selected at least one display device to being triggered by selection display button, and to regarding shown by display device
Frequency information is initiated to discuss；The video information that another selection display button on controller shows coupled mobile terminal
It is sent to be triggered by another button through video matrix and is shown in selected another display device, realizing will be mobile
The video information that terminal shows switches display between display device；Do not show on the controller of video information on the display apparatus
The video information that selection display button shows coupled mobile terminal is sent to aobvious by the selection through video matrix
Show that button is triggered to be shown in selected at least one display device, and replace original display in selected display device
Video information.
In the application, the technical scheme that the present invention also optimizes further below.
Further, the collaboration discussion teaching system also includes conference table and the backboard for mount display, the back of the body
Plate is arranged on an avris of conference table；The conference table is made up of desktop and table leg, table leg support desk panel.
Further, the desktop includes being arranged at the upper desktop and the lower table immediately below upper desktop at top
Panel；Multiple power outlets are provided between upper desktop and lower desktop, the conference table is built-in with multiple for receiving control
The receiver or drawer of device.
Further, be additionally provided with the controller microphone and enable microphone collection voice signal voice by
Key, the microphone and voice button are electrically connected with display control module respectively.
Further, the first communication channel is radio communication channel or wireline communication channels.
Further, second communication channel is radio communication channel or wireline communication channels..
Further, the wireline communication channels of the first communication channel are by transmission video signal and the cable of audio signal
Constitute, the VT electrical connection of one end and video matrix of the cable, the converted circuit of the other end of cable connects
It is connected to the USB interface or HDMI for being attached with display device.
Further, the wireline communication channels of second communication channel are by transmission video signal and the cable of control signal
Constitute, the video signal input terminal electrical connection of one end of the cable and video matrix, the other end of cable and controller it is defeated
Go out module electrical connection.
Further, the radio communication channel of the first communication channel is advised by wifi agreements, 3G agreements or 4G agreements
Fixed first communication channel；The radio communication channel of second communication channel is advised by wifi agreements, 3G agreements or 4G agreements
The second fixed communication channel.
Further, the mobile terminal is notebook computer or panel computer or smart mobile phone, and the display device is
LCDs or PDP or LED display.
In teaching or session discussing application, two display devices in the present invention are fixedly mounted on backboard or wall
On, video matrix is arranged on conference table bottom or backboard bottom, and display device is respectively by the first wired or wireless communication
The VT of channel and video matrix sets up communication connection, and controller is by the second communication channel and video matrix
Video signal input terminal sets up communication connection, cooperates with the multiple participants for discussing that respective mobile terminal and controller are set up logical
Letter connection.Participant presses video information that the selection display button on controller shows its mobile terminal selected by pressure
One or more display devices on shown, and to shown by display device video information initiate discuss；Participant presses
The video information for showing its mobile terminal by other the selection display button on controller is shown in other display devices
Show, the video information that realization shows mobile terminal switches display between different display devices；Do not show on the display apparatus
Participant's pressure of the affiliated mobile terminal of video information presses the video that the selection display button on controller shows its mobile terminal
Information shown in selected one or more display devices, and replaces regarding for original display in selected display device
Frequency information, and initiate new discussion.
Beneficial effect
Collaboration is participated in discussion, and the controller accessed by the conference table and mobile terminal that design, participant can sit around
The periphery of conference table, and own mobile terminal is set up by controller and the second communication channel and video matrix of the invention
Communication connection, participant has equal response priority, is participated in by the flat energy of controller and initiates to discuss.
Switch display in display device and will be discussed video information, the controller connected by set and video matrix,
Selection display button on participant's pressure controller can select one or more display devices to show institute on its mobile terminal
The video information of display, realizes that the video information of different participants contrasts display on the display apparatus, and contrast is discussed, it is interactive more
By force, it is better.
Brief description of the drawings
The theory diagram of Fig. 1 present systems.
Fig. 2 structural representations of the invention.
In figure, 101- video matrixs, 102- display devices, 103- first communication channels, 104- controllers, 105- second leads to
Letter channel, 200- conference tables, the upper desktops of 201-, desktop under 202-, 203- table legs, 204- power outlets, 205- receivers,
300- backboards.
Specific embodiment
In order to illustrate technical scheme and technical purpose, below in conjunction with the accompanying drawings and specific embodiment is to the present invention
It is described further.
As depicted in figs. 1 and 2, a kind of intelligent collaboration discussing system of the invention, including display device 102, video square
Battle array 101, first communication channel 103, the second communication channel 105, controller 104, conference table 200 and for mount display
Backboard 300.Two display devices 102 are respectively by two first communication channels 103 and two videos of video matrix 101
Signal output part sets up communication connection, and the controller 104 is believed by the video of the second communication channel 105 and video matrix 101
Number input sets up communication connection.The controller 104 is built-in with video module, display control module and output module, video
Module and display control module are electrically connected with output module respectively, and output module passes through the second communication channel 105 and video matrix
101 set up communication connection.Input electrical connection for connecting one end and video module of the vision cable of terminal installation, video
The other end converted circuit of connection of cable is connected with USB interface or HDMI for being attached with notebook computer；
Preferentially USB interface, communicates to connect for being set up between mobile terminal and controller, and display on the mobile terminal being connected
Video information transmission is to video matrix 101.Video module is used for vision signal and the controller 104 for sending mobile terminal
The control signal of selection display button triggering is transferred to video matrix 101, and display control module is used to be shown on mobile terminal
Video information be transferred to be triggered by selection display button through video matrix and shown in selected display device 102.Institute
State controller 104 and be provided with two（Can also two or more）For the video information that will be shown on mobile terminal selected
The selection display button shown in display device, the selection display button and the display control module are electrically connected.Move
Dynamic terminal is notebook computer.Second communication channel 105 is preferably radio communication channel, and the radio communication channel is
One kind in wifi agreements, 3G agreements or 4G agreements, the communication channel of two kinds or three kinds defineds, it is therefore preferable to wifi agreements institute
The communication channel of regulation.The output module of controller and installed in video matrix video signal input terminal wireless receiver it
Between by the radio communication channel 105 set up communication connection.Display device is preferably LCDs, and backboard is arranged on meeting
One avris of table, two LCDs are arranged on backboard（If conference table side Kao Qiang, LCDs can also be fixed on
On metope）, and its numbering is identified on the display apparatus, e.g., number consecutively is 1#, 2# LCDs from left to right.Video square
Battle array is arranged on the lower section of conference table.1#, 2# LCDs pass through two first communication channels 103 and video matrix 101 respectively
Two VTs set up connection, first communication channel 103 be preferably wireline communication channels, by for transmit regard
The communication cable of the vision signal of frequency and audio signal is constituted, one end of the communication cable of first communication channel and video matrix
Output end is connected, and the converted circuit of the other end of the communication cable of first communication channel is connected with for being connected with display device
The USB interface or HDMI for connecing, preferentially USB interface, is connected by USB interface and display device.
Two have been used in this example（Can also two or more）LCDs, then the controller 104 be provided with two
For the selection display button that the video information that will be shown on notebook computer is shown in selected display device, can
It is 1,2 so that selection display button is sequentially numbered；No. 1 selection display button is pressed to correspond in 1# liquid crystal displays screen display pen
Remember the video information shown on this computer, correspond in 2# liquid crystal display screen displays notebook electricity by No. 2 selection display button
The video information shown on brain, if pressing 1, No. 2 selection display button simultaneously or successively, simultaneously in 1#, 2# LCDs
The video information shown on display notebook computer.When the number of display device is less than the number that display button is selected on controller
When, the selection display button more than the big numbering of display device number ceases to be in force automatically；If for example, having 1,2, No. 3 three on controller
Individual selection display button, but only two display devices, then No. 3 select display button to cease to be in force automatically, and video matrix is not responding to No. 3
Select the trigger signal of display button.
Wherein, the conference table 200 is made up of desktop and table leg 203, the support desk panel of table leg 203, the desktop
It is used as the upper desktop 201 and lower desktop 202 of desktop including being arranged at top, lower desktop 202 is located at upper desktop 201
Underface.Multiple power outlets 204 are provided between upper desktop 201 and lower desktop 202, power outlet 204 is distributed in meeting
Around table 200, the quantity of power outlet in this example 204 and controller is respectively respectively 6, and on the side of conference table 200
6 are equipped with chair, are learnt for 6 people, discussed.The conference table 200 is built-in with 6 for receiving controller 104 and miscellaneous
The receiver 205 of thing（It can also be drawer）.6 of collaboration discussion（6 can also be more or less than）Participant is respective
The VGA video interfaces of vision cable one end of notebook computer and the controller 104 are attached, and controller 104 passes through nothing
Second communication channel 105 of line and the signal input part of video matrix set up communication connection.One of participant's pressure is by control
The video information that one on device 104 selection display button can show its notebook computer through video matrix be sent to by by
Key is triggered and shown in a selected display device, such as, if pressure has pressed No. 1 selection display button, shown in 1#
The video information that notebook computer shows is shown on device；If pressure has pressed No. 2 selection display button, show in 2# display devices
Show the video information that notebook computer shows；It is simultaneously aobvious in 1#, 2# two if pressure has pressed 1, No. 2 two selection display button
The video information that notebook computer shows is shown on showing device；Then, participant is sent out the video information shown by display device
Rise and discuss.Having shown the participant of the affiliated notebook computer of video information on the display apparatus can also press by another on controller
One selection display button, then such as No. 2 selection display button, the video information for showing its notebook computer is passed through video matrix
It is sent to be triggered by selection display button and is shown in selected 2# display devices, the video that realization shows notebook computer
Information switches display between display device 102, that is, press No. 1 selection display button, is display in 1# display devices；Press No. 2 selections
Display button, is display in 2# display devices.The participation of the affiliated notebook computer of video information not shown on the display apparatus
The video information that person's pressure is shown its notebook computer by the selection display button on controller 104 is transmitted through video matrix 101
Shown in selected one or two display device 102 to being triggered by button, and replaced former in selected display device
Come the video information for showing.
The present invention also has alternate embodiment, and e.g., the first communication channel can also be replaced by radio communication channel, the
Two communication channels can also be replaced by wireline communication channels, and the radio communication channel is wifi agreements, 3G agreements or 4G agreements
In one kind, the communication channel of two kinds or three kinds defineds.Mobile terminal can also be panel computer or smart mobile phone.Display dress
Putting can also be PDP or LED display.
In imparting knowledge to students or application is discussed, two display devices in the present invention are fixedly mounted on backboard or on wall,
Video matrix is arranged on conference table bottom or backboard bottom, and display device passes through wired or wireless first communication channel respectively
Set up communication connection with the VT of video matrix, cooperate with multiple participants for discussing respective mobile terminal and
Controller sets up communication connection by the second wired or wireless communication channel and video matrix, if mobile terminal electric energy is not
Foot, power supply adaptor can be inserted in carries out power taking on the socket of conference table.The selection that participant is pressed on controller by pressure shows
Show that the video information that button shows its mobile terminal is shown in selected one or more display devices, and to aobvious
Video information shown by showing device is initiated to discuss；Participant according to can be pressed the need for discussion by controller other select
The video information that display button shows its mobile terminal is shown in the display device that it is selected, is realized mobile terminal
The video information of display switches display between different display devices；It is mobile whole belonging to the video information not shown on the display apparatus
Participant's pressure at end presses video information that the selection display button on controller shows its mobile terminal at selected one
Or shown in multiple display devices, and the video information of original display in selected display device is replaced, oneself is moved
The video information shown in terminal is compared with the video information for having shown, initiates new discussion.Under discussion, any one ginseng
Can press the video information for its mobile terminal being shown by the selection display button on controller with person in selected display dress
Put and shown, as needed switching display at any time.Compared to the prior art, the present invention has following technological progress.
1）Collaboration is participated in discussion, and the controller accessed by the conference table and mobile terminal that design, participant can sit around
On the periphery of conference table, and own mobile terminal is built by controller and the second communication channel and video matrix of the invention
Vertical communication connection, participant has equal response priority, is participated in by the flat energy of controller and initiates to discuss.
2）Switch display in display device and will be discussed video information, the control connected by set and video matrix
Device, the selection display button on participant's pressure controller can select one or more display devices to show on its mobile terminal
Shown video information, realizes that the video information of different participants contrasts display on the display apparatus, and contrast is discussed, interactive
It is stronger, it is better.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, the present invention
Claimed scope is by appending claims, specification and its equivalent thereof.
Claims (10)
1. a kind of intellectuality cooperates with discussing system, it is characterised in that：Including display device, video matrix, first communication channel,
Two communication channels and controller, display device described at least two are believed by the video of first communication channel and video matrix respectively
Number output end sets up communication connection, and the controller is set up by the video signal input terminal of the second communication channel and video matrix
Communication connection, the controller is built-in with the video screen module for the video signal transmission for sending mobile terminal to video matrix
Display control module that block, the video information for will be shown on mobile terminal are shown in selected display device and
Output module, video module and display control module are electrically connected with output module respectively；The controller is provided with least two
It is described for the selection display button that the video information that will be shown on mobile terminal is shown in selected display device
Selection display button and display control module electrical connection；
The mobile terminal of the participant for discussing is cooperateed with to set up communication connection with the video module of controller respectively, by controller
The selection display button video information that shows the mobile terminal being connected with the controller through video matrix be sent to by
Selection display button is triggered and shown in selected at least one display device, and to the video letter shown by display device
Breath initiates to discuss；The video information that another selection display button on controller shows the mobile terminal being connected with controller
It is sent to be triggered by another selection display button through video matrix and is shown in selected another display device, it is real
The video information that now mobile terminal is shown switches display between display device；The control of video information is not shown on the display apparatus
Through video matrix be sent to the video information that the mobile terminal being connected with controller shows by the selection display button on device processed
Triggered by the selection display button and shown in selected at least one display device, and replace selected display device
The video information of upper original display.
2. a kind of intellectuality according to claim 1 cooperates with discussing system, it is characterised in that：The collaboration discussion teaching system
System also includes conference table and the backboard for mount display, and backboard is arranged on an avris of conference table；The conference table by
Desktop and table leg are constituted, table leg support desk panel.
3. a kind of intellectuality according to claim 2 cooperates with discussing system, it is characterised in that：The desktop includes setting
Lower desktop in the upper desktop at top and immediately below upper desktop；Multiple is provided between upper desktop and lower desktop
Power outlet, the conference table is built-in with multiple receivers or drawer for receiving controller.
4. a kind of intellectuality according to claim 1 cooperates with discussing system, it is characterised in that：Also set up on the controller
There is microphone and enable the voice button that microphone gathers voice signal, the microphone and voice button are respectively and display control
Module is electrically connected.
5. a kind of intellectuality according to claim 1 cooperates with discussing system, it is characterised in that：The first communication channel is
Radio communication channel or wireline communication channels.
6. a kind of intellectuality according to claim 1 cooperates with discussing system, it is characterised in that：Second communication channel is
Radio communication channel or wireline communication channels.
7. a kind of intellectuality according to claim 5 cooperates with discussing system, it is characterised in that：The first communication channel
Wireline communication channels are made up of the cable of transmission video signal and audio signal, one end of the cable and the video of video matrix
Signal output part is electrically connected, and the converted circuit of the other end of cable is connected with the USB interface for being attached with display device
Or HDMI.
8. a kind of intellectuality according to claim 6 cooperates with discussing system, it is characterised in that：Second communication channel
Wireline communication channels are made up of the cable of transmission video signal and control signal, one end of the cable and the video of video matrix
Signal input part is electrically connected, the output module electrical connection of the other end and controller of cable.
9. the intelligent collaboration discussing system of one kind according to claim 5 or 6, it is characterised in that：The radio communication letter
Road is the communication channel of wifi agreements, 3G agreements or 4G agreement defineds.
10. the intelligent collaboration discussing system of one kind according to claim 1-8 any claims, it is characterised in that：Institute
Mobile terminal is stated for notebook computer or panel computer or smart mobile phone, the display device is LCDs or plasma
Display screen or LED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510035134.1A CN104537907B (en) | 2015-01-23 | 2015-01-23 | A kind of intelligent collaboration discussing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510035134.1A CN104537907B (en) | 2015-01-23 | 2015-01-23 | A kind of intelligent collaboration discussing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104537907A CN104537907A (en) | 2015-04-22 |
| CN104537907B true CN104537907B (en) | 2017-06-16 |
Family
ID=52853426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510035134.1A Expired - Fee Related CN104537907B (en) | 2015-01-23 | 2015-01-23 | A kind of intelligent collaboration discussing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104537907B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045938B (en) * | 2019-04-17 | 2022-07-29 | 杭州迈杰教育科技有限公司 | Packet discussion control system |
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| WO2003047172A1 (en) * | 2001-11-28 | 2003-06-05 | Nokia Corporation | Instructional method and system using wireless communication |
| JP2005293599A (en) * | 1993-05-24 | 2005-10-20 | Sun Microsyst Inc | Apparatus and method for controlling remote device |
| CN201138466Y (en) * | 2007-12-07 | 2008-10-22 | 周宪忠 | Wireless interactive apparatus for discussion of multi-person meeting and teaching with storage card plugging function |
| CN203025982U (en) * | 2012-12-28 | 2013-06-26 | 上海籍多艺术设计有限公司 | Multi-screen linkage intelligentized teaching and showing device |
| CN203405965U (en) * | 2013-05-09 | 2014-01-22 | 何凯佳 | Auxiliary system for classroom teaching |
| CN103646572A (en) * | 2013-11-08 | 2014-03-19 | 赤壁市巨龙科教高技术有限公司 | Classroom system with group cooperative learning function |
-
2015
- 2015-01-23 CN CN201510035134.1A patent/CN104537907B/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| JP2005293599A (en) * | 1993-05-24 | 2005-10-20 | Sun Microsyst Inc | Apparatus and method for controlling remote device |
| WO2003047172A1 (en) * | 2001-11-28 | 2003-06-05 | Nokia Corporation | Instructional method and system using wireless communication |
| CN201138466Y (en) * | 2007-12-07 | 2008-10-22 | 周宪忠 | Wireless interactive apparatus for discussion of multi-person meeting and teaching with storage card plugging function |
| CN203025982U (en) * | 2012-12-28 | 2013-06-26 | 上海籍多艺术设计有限公司 | Multi-screen linkage intelligentized teaching and showing device |
| CN203405965U (en) * | 2013-05-09 | 2014-01-22 | 何凯佳 | Auxiliary system for classroom teaching |
| CN103646572A (en) * | 2013-11-08 | 2014-03-19 | 赤壁市巨龙科教高技术有限公司 | Classroom system with group cooperative learning function |
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| CN104537907A (en) | 2015-04-22 |
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Granted publication date: 20170616 Termination date: 20180123 |