CN104333574B - Electric white board synchronous method and system - Google Patents
Electric white board synchronous method and system Download PDFInfo
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- CN104333574B CN104333574B CN201410560215.9A CN201410560215A CN104333574B CN 104333574 B CN104333574 B CN 104333574B CN 201410560215 A CN201410560215 A CN 201410560215A CN 104333574 B CN104333574 B CN 104333574B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/401—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
- H04L65/4015—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference where at least one of the additional parallel sessions is real time or time sensitive, e.g. white board sharing, collaboration or spawning of a subconference
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
- G06F9/452—Remote windowing, e.g. X-Window System, desktop virtualisation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
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- Engineering & Computer Science (AREA)
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- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The present invention discloses a kind of electric white board synchronous method, includes the following steps：At least two electronic whiteboards establish communication connection and form conference group；When conference group is formed, the electronic whiteboard participated in makees identical initialization process；When user's operation occurs, the electronic whiteboard operated generates operational order according to user's operation；The electronic whiteboard operated sends the operational order to other electronic whiteboards of conference group；All electronic whiteboards of conference group respond the operational order.A kind of synchronization of electronic whiteboards system is also disclosed.Above-mentioned electric white board synchronous method and system, only need to transmit the operational order for taking less bandwidth in synchronizing process, thus synchronous rapid, and at the same time by identical initialization so that synchronizing content is guaranteed.
Description
Technical field
It is white more particularly to a kind of electric white board synchronous method and a kind of electronics the present invention relates to electronic whiteboard technology field
Plate synchronization system.
Background technology
The application of remote synchronization technology is very extensive, and one of the most common is exactly remote desktop, and remote desktop can be used at present
In fields such as telecommuting, long-distance education, remote maintenance and remote controls.
Remote desktop is to be left away to control another electricity by a computer (main control end Remote/ clients) long distance on network
Brain (controlled terminal Host/ server ends), while picture is transmitted to master control end main frame by the picture of controlled host by network,
Realize the effect of remote desktop.
The most crucial index of remote desktop is exactly the speed transmitted, shared bandwidth, because the core of the technology is exactly long-range
The picture transmission of desktop, how more efficient, by the picture synchronization of remote desktop to control terminal, this is long-range for the mode of more bandwidth-saving
The key technology of desktop.
The technology that traditional remote desktop uses has, compression of images, the technology such as variable quantity transmission.Which kind of side either used
Method, is all to be reduced into image one by one, is then shown in Terminal Server Client.
Be synchronized to remote port by the way of image is transmitted, it is maximum the problem of be exactly bandwidth, compress, how to compile anyway
Code, if the picture of remote terminal is the very high video of a change rate, compression efficiency is very low, can not break away to bandwidth according to
Rely.
The content of the invention
Based on this, it is necessary to provide a kind of occupied bandwidth less electric white board synchronous method.
In addition, also provide a kind of synchronization of electronic whiteboards system.
A kind of electric white board synchronous method, the meeting system based on the electronic whiteboard that connection is in communication with each other including at least two
System, the electronic whiteboard include the blank main body for writing, the touch sensible component arranged on the blank main body surrounding, are used for
The control that projecting subassembly in image projection to blank main body and control touch sensible component and projecting subassembly are cooperated
Component, described method includes following steps：
At least two electronic whiteboards establish communication connection and form conference group；
When conference group is formed, the electronic whiteboard participated in makees identical initialization process；
When user's operation occurs, the electronic whiteboard operated generates operational order according to user's operation；
The electronic whiteboard operated sends the operational order to other electronic whiteboards of conference group；
All electronic whiteboards of conference group respond the operational order.
In one of the embodiments, at least two electronic whiteboard is established the step of communication connection forms conference group and is wrapped
Include：
Invited from an electronic whiteboard at least one electronic whiteboard initiating conference, when at least one electronics being invited to is white
When plate receives the invitation, the electronic whiteboard that initiating conference is invited can be mutual with receiving the electronic whiteboard composition of invitation
The conference group of communication；
Wherein, each electronic whiteboard is endowed unique identifying number, and the electronic whiteboard for initiating to invite passes through the unique mark
Number search wish invite electronic whiteboard.
In one of the embodiments, the user's operation includes clicking on and slides, and the operational order includes：
Trace graphics are generated or wiped according to sliding trace in writing region；
Instruction is zoomed in or out according to what the opposite sliding trace of multiple spot generated；
According to the menu instructions for single clicing on generation of menu area；
According to the single on file icon or the double opening file instructions for clicking on generation.
In one of the embodiments, when the operational order is generation or erasing trace graphics, zooms in or out instruction
And during menu instructions, the electronic whiteboard operated directly transmits the operational order to other electronic whiteboards of conference group.
In one of the embodiments, when the operational order is opens file instruction, the electronic whiteboard that is operated to
Other electronic whiteboards of conference group are sent first needs the file for being performed opening operation, then sends the opening file and refers to
Order.
A kind of synchronization of electronic whiteboards system, for synchronization of electronic whiteboards, the electronic whiteboard includes the blank for writing
Main body, the touch sensible component arranged on the blank main body surrounding, for by the projecting subassembly in image projection to blank main body
And the control assembly that control touch sensible component and projecting subassembly cooperate, it is characterised in that the synchronization of electronic whiteboards
System includes：
Communication module, establishes communication connection at least two electronic whiteboards and forms conference group；
Initialization module, for when conference group is formed, making initialization process to electronic whiteboard；
Identification module is operated, for when user's operation occurs, operational order to be generated according to user's operation；
The communication module is additionally operable to send the operational order to other electronic whiteboards of conference group or receive to come from it
The operational order that his electronic whiteboard is sent；
Operation executing module, for responding the operational order.
In one of the embodiments, the communication module is used to send invitation or receives invitation；Wherein, institute
State electronic whiteboard and be endowed unique identifying number.
In one of the embodiments, the operation identification module is used to identify click and slide, and：
Trace graphics are generated or wiped according to sliding trace in writing region；
Instruction is zoomed in or out according to the generation of the opposite sliding trace of multiple spot；
Generation menu instructions are single clickd on according to menu area；
Generation is clicked on according to the single on file icon or double times and opens file instruction.
In one of the embodiments, the communication module is used for：When the operational order is generation or erasing trajectory diagram
Shape, when zooming in or out instruction and menu instructions, the operational order is directly transmitted to other electronic whiteboards of conference group.
In one of the embodiments, the communication module is used for：When the operational order is opens file instruction, to
Other electronic whiteboards of conference group are sent first needs the file for being performed opening operation, then sends the opening file and refers to
Order.
Above-mentioned electric white board synchronous method and system, only need to transmit the operation life for taking less bandwidth in synchronizing process
Order, thus it is synchronous rapid, and at the same time by identical initialization so that synchronizing content is guaranteed.
Brief description of the drawings
Fig. 1 is the structure diagram of electronic whiteboard；
Synchronous method flow chart between the electronic whiteboard that Fig. 2 is Fig. 1；
Region division schematic diagram when Fig. 3 is the blank main body presentation display picture in Fig. 1；
Fig. 4 is the synchronization of electronic whiteboards system module figure of an embodiment.
Embodiment
Fig. 1 is the structure diagram of electronic whiteboard.Electronic whiteboard 10 includes the blank main body 100 for writing, arranged on institute
State the touch sensible component 200 of 100 surrounding of blank main body, for by the projecting subassembly 300 in image projection to blank main body 100
And the control assembly 400 that control touch sensible component 200 and projecting subassembly 300 cooperate.
The generally rectangular solid plate of blank main body 100, material is unlimited, and the surface for projecting or writing is usually white
Color, because of referred to herein as blank.Touch sensible component 200 mainly includes the sensing unit for being arranged on 100 surrounding of blank main body and corresponding
Circuit, for sensing writing implement and being positioned to position of the writing implement in blank main body 100, the infrared sense of generally use
Should.Projecting subassembly 300 can by image projection to blank main body 100, picture can be the picture that control assembly 400 exports or
Person's other equipment gathers or the picture of output, such as the picture of camera collection.Control assembly 400 can be based on being shown in blank
The operation of picture and user in blank main body 100 in main body 100 forms feedback, such as on original picture in superposition writing
Hold, other picture etc. is jumped to according to operation.
At least two above-mentioned electronic whiteboards 10 are in communication with each other connection, may be constructed conference system.The conference system can be used for
Including but not limited to teaching, teleconference etc..Based on the conference system, there is provided the electric white board synchronous method of an embodiment.Such as
Shown in Fig. 2, this method comprises the following steps.
Step S101：At least two electronic whiteboards establish communication connection and form conference group.The mode for establishing communication connection can
With reference to following steps：
Invited from an electronic whiteboard at least one electronic whiteboard initiating conference, when at least one electronics being invited to is white
When plate receives the invitation, the electronic whiteboard that initiating conference is invited can be mutual with receiving the electronic whiteboard composition of invitation
The conference group of communication；Wherein, each electronic whiteboard is endowed unique identifying number, and the electronic whiteboard for initiating to invite passes through described unique
Identification number searches the electronic whiteboard for wishing to invite.
In other embodiments, can also use other modes formed conference group, a for example, at least electronic whiteboard to
Same main electronic whiteboard sends meeting application, and conference group can be added by obtaining the electronic whiteboard that the main electronic whiteboard is agreed to.Example again
Such as, more electronic whiteboards are progressively invited to add meeting with chain or branched form with electronic whiteboard.The mode for forming conference group exists
This is not limited.
Communication mode between electronic whiteboard can be communicated using the TCP/IP communication agreement based on Internet.
Step S102：When conference group is formed, the electronic whiteboard participated in makees identical initialization process.The present embodiment
Synchronous method needs to make the electronic whiteboard of participation meeting to possess same operating environment, so can just possess the base for being capable of synchronization
Plinth.Therefore when conference group is formed, all electronic whiteboards for participating in meeting make identical initialization process.Initialization process bag
Include：Show identical initial picture, identical operating right etc. is provided.The initialization of electronic whiteboard is the place of electronic whiteboard in itself
Reason process, therefore need not move through network transmission picture data.After initialization process, all electronic whiteboards for participating in meeting
It will show identical picture.
Step S103：When user's operation occurs, the electronic whiteboard operated generates operational order according to user's operation.Electricity
The miscellaneous function that sub- blank demonstration is explained typically as language, therefore during meeting, can be by user to electronic whiteboard
Operated, image information is transmitted to other participants.When operated by the user, the electronic whiteboard operated can be according to user
Operation generation operational order.Such as the user of one of electronic whiteboard needs one figure of Freehandhand-drawing more clear to other participants
Chu representation language implication, it can paint in blank main body 100, and the track that electronic whiteboard is painted according to it forms one
Hand-drawing graphics are simultaneously projected in blank main body 100.
Specifically, user's operation generally comprises click and slip.It can be formed by clicking on and sliding as generated or wiping rail
Mark figure, amplification, diminution, menu instructions and opening file instruction etc..
Projected picture after initialization, including the writing region 102 of 100 larger area of blank main body is occupied, at the same time
Menu area 104 is also provided, refers to Fig. 3.Fig. 3 is a kind of informative example, writes region 102 and menu area in practice
104 can according to circumstances be divided, such as menu area 104 can also be in the top of display picture, left or right side, can be with
Breathed out in writing process.In addition, menu area 104 is also possible to be the operable area in application program picture, such as word,
The operable area of ppt.
For the user's operation in writing region 102 and menu area 104, different operational orders can be generated.Such as：
Slide is carried out in writing region, can generate or wipe trace graphics according to sliding trace.And clicking operation one
As can generate or wipe the image of a point.Therefore the slide in writing region can be used in the enterprising rower of display picture
These are marked, write erasing etc. by note, writing.
According to the opposite slide of multiple spot, what can be generated zooms in or out instruction.Such as two the finger of hand sliding
When relative motion, can generate diminution instruction, by whole picture reduce show.The finger of two hands is unlucky dynamic in slip phase, can
To generate amplification instruction, whole picture is amplified and is shown.
Carry out single clicing on operation in menu area, the menu that the region is indicated can be generated according to the position of click and is referred to
Order.Such as showing multiple icons for representing common operational order in menu area, each icon occupies certain region, is accounted at it
According to being clicked in region, and corresponding operational order can be generated.
Normally, folder picture can also be shown in writing region.Multiple files may be shown under file, can be with
Write or mark in folder picture.Meanwhile can also carry out single or double secondary clicking operations on file icon, according to the list
Secondary or double secondary clicking operations can generate opening file instruction.
Based on above-mentioned generation or erasing trace graphics, amplification, diminution, menu instructions and open file instruction etc. can be with
Complete all demands needed for conference presentation.
Step S104：The electronic whiteboard operated sends the operational order to other electronic whiteboards of conference group.At it
In a participant when operating oneself electronic whiteboard, the operational order generated can also be sent to other electronic whiteboards.Its
In, above-mentioned generation or erasing trace graphics, amplification, diminution, menu instructions can directly transmit.And opening file instruction then has
Institute is different.Other participants of the file of demonstrator may not have, when operational order is opens file instruction, the electronics that is operated
Blank first sends this document on backstage to other electronic whiteboards, then sends the opening file instruction.In the process, operated
Electronic whiteboard can first suspend execution open file instruction, treat that this document is sent completely and perform again.
It should be noted that the operation for transferring file is to be instructed to complete by the special menu not transmitted, and transferring text
The picture for transferring file is temporarily shown during part in the display picture of demonstrator, the picture is not same with other participants
Step, question paper again return to synchronizing picture after the completion of transferring.
File Open has two ways：
The meeting existing functional areas for being called bookcase that file needed for meeting is added to electronic whiteboard, the function before starting
The file in area can be automatically synchronous with all participants on backstage, if synchronously completed, opening operation only needs send instructions in fact
It can complete to open.
If transferring other external files on hard disk in meeting temporarily, other participants need to wait a time
It can open, temporary transient picture may synchronously some postpone, and the opening time of file is related with size, for example the file of a 2-3M is beaten
More than ten seconds may be needed by opening, so, the file opened in meeting should not be too large.
It is generally desirable to which the file opened should not be too large temporarily, participant otherwise should be sent in advance.
Step S105：All electronic whiteboards of conference group respond the operational order.Since initial operating environment is the same,
Result of all electronic whiteboards according to performed by the operational order also will be the same.Then on same operating result into one
Step operation, will also generate the same further operating result.It may finally realize the simultaneous display of all electronic whiteboards.
The above method is illustrated with an example below.
User A (such as teacher) is dialled by electronic whiteboard a to the electronic whiteboard b of user B (such as student), invites meeting
View.User B is accepted the invitation by electronic whiteboard b, and electronic whiteboard a and electronic whiteboard b form conference group.Electronic whiteboard a and electronics
Blank b is initialized, it is assumed that forms display picture as shown in Figure 3.
User A needs to tell user B how mono- Chinese character is write by word writing, books of the user A on electronic whiteboard a
Write region and write the Chinese character, handwriting trace is sent to electronic whiteboard b by electronic whiteboard a, when electronic whiteboard a and electronic whiteboard b are equal
After responding the handwriting trace, the trace graphics of formation are projected in blank main body, the Chinese that user A writes on electronic whiteboard a
Word may also appear on the electronic whiteboard b of user B.
User A will further illustrate the usage of the Chinese character to user B, and relevant example sentence is stored in portion as teaching notes
In word or ppt.User A operations electronic whiteboard a transfers the teaching notes file, while performs opening operation.Electronic whiteboard a is on backstage
The teaching notes file and opening operation instruction are sent to electronic whiteboard b, after the completion of to be sent, electronic whiteboard b automated executions open religion
Case file.There is the teaching notes file opened at the same time on the electronic whiteboard b of electronic whiteboard a and user B in user A at this time.
On this basis, user A can perform the operational order of the teaching notes file, such as scroll through pages, can also be into rower
Note and writing.User B can also equally perform the operational order of the teaching notes file and be labeled and write.
Above-mentioned synchronous method, only needs to transmit the operational order for taking less bandwidth in synchronizing process, thus synchronous rapid,
And at the same time by identical initialization so that synchronizing content is guaranteed.
As shown in figure 4, the synchronization of electronic whiteboards system module figure for an embodiment.The synchronization system 20 is used for foregoing implementation
It is synchronous between the electronic whiteboard 10 of example.The synchronization system typically operates in control assembly 400.
Synchronization of electronic whiteboards system 20 includes：Communication module 210, initialization module 220, operation identification module 230 and
Operation executing module 240.Communication module 210 establishes communication connection at least two electronic whiteboards and forms conference group；Initialization
Module 220 is used for when conference group is formed, and makees initialization process to electronic whiteboard；Operation identification module 230 is used for when using
When family operates, operational order is generated according to user's operation；Communication module 210 is additionally operable to other electronic whiteboards transmission to conference group
The operational order receives the operational order sent from other electronic whiteboards；Operation executing module 240 is used to respond described
Operational order.
Communication module 210, initialization module 220, the specific reality for operating identification module 230 and operation executing module 240
Existing mode can refer to the embodiment of aforementioned synchronization method.
Communication module 210 is used to send invitation or receives invitation；Wherein, the electronic whiteboard is endowed uniquely
Identification number.Communication module 210 is additionally operable to：When the operational order for generate or erasing trace graphics, zoom in or out instruction with
And during menu instructions, the operational order is directly transmitted to other electronic whiteboards of conference group.Communication module 210 is additionally operable to：When
When the operational order is opens file instruction, being sent first to other electronic whiteboards of conference group needs to be performed opening operation
File, then send the opening file instruction.
Identification module 230 is operated to be used to identify click and slide, and：Generated in writing region according to sliding trace
Or erasing trace graphics；Instruction is zoomed in or out according to the generation of the opposite sliding trace of multiple spot；According to the single of menu area point
Hit generation menu instructions；Generation is clicked on according to the single on file icon or double times and opens file instruction.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of electric white board synchronous method, it is characterised in that based on the electronic whiteboard that connection is in communication with each other including at least two
Conference system, the electronic whiteboard include for write blank main body, the touch sensible arranged on the blank main body surrounding
Component, for by the projecting subassembly in image projection to blank main body and control touch sensible component and projecting subassembly cooperate with work
The control assembly of work, described method includes following steps：
At least two electronic whiteboards establish communication connection and form conference group；
When conference group is formed, the electronic whiteboard participated in makees identical initialization process；Initialization process includes：Show identical
Initial picture, identical operating right is provided；
When user's operation occurs, the electronic whiteboard operated generates operational order according to user's operation；
The electronic whiteboard operated sends the operational order to other electronic whiteboards of conference group；
All electronic whiteboards of conference group respond the operational order；
The operational order includes：According to the single on file icon or the double opening file instructions for clicking on generation；
When the operational order is opens file instruction, other electronic whiteboards from the electronic whiteboard that is operated to conference group first
Transmission needs to be performed the file of opening operation, then sends the opening file instruction；Opening behaviour is performed sending needs
During the file of work, the electronic whiteboard operated first suspends execution opening file instruction, treats that this document is sent completely and holds again
OK.
2. electric white board synchronous method according to claim 1, it is characterised in that at least two electronic whiteboard is established
The step of communication connection forms conference group includes：
Invited from an electronic whiteboard at least one electronic whiteboard initiating conference, when at least one electronic whiteboard being invited to connects
During by the invitation, the electronic whiteboard that initiating conference is invited is formed and can be in communication with each other with receiving the electronic whiteboard of invitation
Conference group；
Wherein, each electronic whiteboard is endowed unique identifying number, and the electronic whiteboard for initiating to invite is looked into by the unique identifying number
Look for the electronic whiteboard for wishing to invite.
3. electric white board synchronous method according to claim 1, it is characterised in that the user's operation includes clicking on and slides
Dynamic, the operational order includes：
Trace graphics are generated or wiped according to sliding trace in writing region；
Instruction is zoomed in or out according to what the opposite sliding trace of multiple spot generated；
According to the menu instructions for single clicing on generation of menu area.
4. electric white board synchronous method according to claim 3, it is characterised in that when the operational order for generation or is wiped
Except trace graphics, zoom in or out instruction and menu instructions when, the electronic whiteboard operated is white to other electronics of conference group
Plate directly transmits the operational order.
5. a kind of synchronization of electronic whiteboards system, for synchronization of electronic whiteboards, the electronic whiteboard includes the blank master for writing
Body, the touch sensible component arranged on the blank main body surrounding, for by the projecting subassembly in image projection to blank main body with
And the control assembly that control touch sensible component and projecting subassembly cooperate, it is characterised in that the synchronization of electronic whiteboards system
System includes：
Communication module, establishes communication connection at least two electronic whiteboards and forms conference group；
Initialization module, for when conference group is formed, making initialization process to electronic whiteboard；Initialization process includes：Display
Identical initial picture, provide identical operating right；
Identification module is operated, for when user's operation occurs, operational order to be generated according to user's operation；The operation identification mould
Block is used to click on generation opening file instruction according to the single on file icon or double times；
The communication module is additionally operable to send the operational order to other electronic whiteboards of conference group or receives from other electricity
The operational order that sub- blank is sent；When the operational order for open file instruction when, the communication module to conference group its
His electronic whiteboard is sent first needs the file for being performed opening operation, then sends the opening file instruction；Needed sending
During the file for being performed opening operation, the electronic whiteboard operated first suspends execution opening file instruction, treats this article
Part is sent completely to be performed again；
Operation executing module, for responding the operational order.
6. synchronization of electronic whiteboards system according to claim 5, it is characterised in that the communication module is used to send meeting
Invite or receive invitation；Wherein, the electronic whiteboard is endowed unique identifying number.
7. synchronization of electronic whiteboards system according to claim 5, it is characterised in that the operation identification module is used to identify
Click and slide, and：
Trace graphics are generated or wiped according to sliding trace in writing region；
Instruction is zoomed in or out according to the generation of the opposite sliding trace of multiple spot；
Generation menu instructions are single clickd on according to menu area.
8. synchronization of electronic whiteboards system according to claim 7, it is characterised in that the communication module is used for：When described
Operational order is generation or wipes trace graphics, zooms in or out instruction and during menu instructions, to other electronics of conference group
Blank directly transmits the operational order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560215.9A CN104333574B (en) | 2014-10-20 | 2014-10-20 | Electric white board synchronous method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560215.9A CN104333574B (en) | 2014-10-20 | 2014-10-20 | Electric white board synchronous method and system |
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| CN104333574A CN104333574A (en) | 2015-02-04 |
| CN104333574B true CN104333574B (en) | 2018-04-27 |
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| CN201410560215.9A Active CN104333574B (en) | 2014-10-20 | 2014-10-20 | Electric white board synchronous method and system |
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| CN106484195B (en) * | 2015-08-27 | 2019-07-23 | 华为技术有限公司 | Control method, device and the system of electronic whiteboard |
| US9998883B2 (en) * | 2015-09-30 | 2018-06-12 | Nathan Dhilan Arimilli | Glass pane for collaborative electronic communication |
| CN105589606A (en) * | 2015-11-17 | 2016-05-18 | 苏州久腾光电科技有限公司 | Interactive electronic whiteboard with video communication function |
| CN106020681A (en) * | 2016-05-05 | 2016-10-12 | 乐视控股（北京）有限公司 | Method and system for acquiring and projecting painting through touch screen |
| KR101738667B1 (en) * | 2016-10-18 | 2017-06-08 | 주식회사 아이티앤베이직 | Method and system for providing real-time contents |
| CN106534188B (en) * | 2016-12-14 | 2019-08-06 | 上海溢米教育科技有限公司 | Classroom operation trace synchronous method and system |
| CN106790547B (en) * | 2016-12-23 | 2019-07-26 | 维沃移动通信有限公司 | A kind of PPT sharing method and mobile terminal |
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| CN107370982A (en) * | 2017-08-15 | 2017-11-21 | 北京北纬天辰科技有限公司 | Tele-conferencing system based on electronic whiteboard |
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