CN102916998A - Network public whiteboard system and method based on cloud computing - Google Patents
Network public whiteboard system and method based on cloud computing Download PDFInfo
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Abstract
The invention discloses a network public whiteboard system based on cloud computing, and the system comprises terminals and a network public whiteboard platform, wherein the terminals communicate with the network public whiteboard platform through a browser, the network public whiteboard platform further comprises a transmitting unit, a foreground U1 unit and a network public whiteboard processing unit, the foreground U1 unit at least comprises a display subunit and an interaction subunit, the display subunit is used for displaying the data in the browser of the terminals, and the interaction subunit is used for intercepting and capturing input operation on the browser of the terminals through a message hook and sending the input operation to the network public whiteboard processing unit through the transmitting unit; and the network public whiteboard processing unit is used for receiving operation data on the browser of the terminals, processing requests of different users, coordinating the parallel processing of the users, transmitting the processing result through the transmitting unit and displaying the processing result on the corresponding terminal browser through the foreground U1 unit.
Description
Technical field
The present invention relates to a kind of cloud computing technology, relate in particular to the public whiteboard system of a kind of network based on cloud computing and method.
Background technology
In collaborative work, all computers of participating in cooperation may be provided with a virtual common view, and the content on the view both can be the simple graph of Freehandhand-drawing, also can be literal, image, Voice ﹠ Video.When a user revised data in the view, it upgraded the result and is reflected in immediately on the view of other participating user, and this virtual common view is referred to as electronic whiteboard, or is referred to as the public blank of network.Because this characteristic by electronic whiteboard, both can realize sharing of data, also can realize various interactions.And the construction of network for the use of electronic whiteboard provides a good platform, can realize sharing and various interactions of resource by its.
Blank can respond user's mapping operation, and realizes showing at blank.Computer is more convenient for people's life to the support of electronic whiteboard, makes people can participate in electronic whiteboard conference whenever and wherever possible.Computer network just can add electronic whiteboard conference, and any one participant of meeting can be presented at other participant's electronic whiteboard terminal in real time to the operation of electronic whiteboard.The application of a kind of electronic whiteboard in teaching disclosed in paper " design of figure conversational system and the realization of electronic whiteboard Network Based ", figure conversational system based on electronic whiteboard comprises server end (Server) and client (Client) two parts, at first Server/ Client is carried out respectively initialization, create socket and binding address.Then Server waits for connection request by listening port, and when Client had the signal of connection to arrive, address and response that it receives Client connected.Client is after receiving confirmation signal, and expression connects successful, can begin to transmit data.The input data type of Client is divided into the objects such as text, figure.Text is used for carrying out text chat between the client, and figure then comprises straight line, rectangle, circle, ellipse and free setting-out etc.Each data type all is defined as corresponding class, and is packaged into packet in transmission over networks by another class, receives a side of data, by the decompressed data bag, figure is reduced.When network error or request are withdrawed from, releasing network resources.
Between server end and the client mainly be carry out in the following manner mutual: white board server when operation, set up corresponding server client service thread by the maximum user that can set up, circulation monitoring service device port after foundation is finished is waited for the access of user side.According to different user rights, the user logs on after the client, and is synchronous by refreshing with other client's data of electronic whiteboard administration module completing user tabulation; The user can draw at blank after being endowed certain authority, sends text in text box, perhaps sends other order to server.Wherein graph data is sent to a special thread that sends graph data of client by pipeline by customer end A pplet thread, be responsible for these graph datas are passed to the customer service thread of corresponding server end by this send-thread, the client service thread then is broadcast to it other thread again.The client server thread process of server end is then directly delivered in order except graph data by customer end A pplet thread.When user's application was withdrawed from, except will processing the command messages that withdraws from, the customer service thread of server also will be closed network connection, destroys thread, discharges the resource that thread takies.Server end and client this mutual guarantees uniformity and the harmony of deal with data between the server and client side.
In " computer engineering " of publishing in January, 2008, disclose a paper " a kind of design of improved cooperating type electronic whiteboard and realization ", in this paper, disclose concurrent operations how to process each user.That is:
Because electronic whiteboard is a kind of multi-user Cooperation system, therefore on any blank, the operating data that different user sends execution thereon will inevitably bring mutual conflict, for the concurrent operations of each collaboration user, how to design a kind of rational scheduling strategy and become the key that can the collaboration feature of electronic whiteboard realize.Traditional CSCW concurrency control method has following 4 kinds:
(1) method that locks.The method of locking is the conventional means that guarantees data consistency, and it provides the locking and release of shared resource, is used for control user's concurrent operations.But it is used for the CSCS system and has certain defect.The expense of at first applying for and discharging can affect user's rapid feedback, and system is difficult to determine when application and discharges lock.
(2) centralized control method.Adopt a centralized control process, leading subscriber is to the operation of shared object.All operations at first sends to the centralized control process, is distributed to other user by it again.But the centralized control process can cause the bottleneck of system, and operation must make response speed slack-off through the distribution of centralized control process.
(3) reversible executable operations.This operation is carried out immediately, but the information relevant with operation is saved.Under the effect of overall sequential, when several operating collision, one of them or several operation are cancelled and predesigned order is reformed once, and good response performance is arranged, but overall sequential is difficult to realize.
(4) operation conversion.Be the distortion that rely on to detect, i.e. conflict is automatically eliminated and is not needed manual intervention.User's operation is carried out in this locality at once, and operation is broadcast to other user with state vector.After other users receive, state vector and local state vector are compared, determine directly to carry out (without conflicting) or change (conflict is arranged).
Because said method respectively has its limitation, therefore can not use simply wherein any.In other document, also introduced other method, such as the method that adopts centralized control and timestamp.After the user has carried out operation, at first do not change local result, but operation and timestamp packing are dealt into control centre's module, control centre safeguards a buffering area, press timestamp and arrange the data that receive, periodically broadcast again time of origin operation early, allow all users upgrade.Make in this way, forwarding control to data is succinct, but server comprises the user who sends initial data to each user's broadcast data, the data volume that sends as this user is large, and the network bandwidth is when little, and the transmission of big data quantity also receives forwarding data (local initial data) from server, so easy heavy system burden, and causing data jamming, system delay strengthens.
In this paper, illustrate and centralized control can be converted into each client distribution formula processing, thereby improve above-mentioned concurrent strategy.In service end, can connect thread to the client and dispatch, making needn't be again to its forwarding from user's data.Also adopt multithreading in client, assign thread to receive and process the text message of small data quantity, coordinate information etc., other assigns a thread to receive and process the image of big data quantity, and they and user's local main thread is worked simultaneously.Delphi provides the lock function to the district that draws, when each thread accesses is drawn the district, for adding, the district that draws locks, then hang up other thread to its access, work as operating result, be the district's release of drawing, the execution that then wakes other threads up, any moment of assurance only has a thread in the district's executable operations of drawing like this, thereby realizes synchronizing multiple threads.
More than disclosed client-based whiteboard system, but there is following shortcoming in above-mentioned whiteboard system:
(1) client-based whiteboard system is the client that this electronic whiteboard need to be installed in each terminal, could use, and is very inconvenient.In addition, client need to be according to the renewal of electronic whiteboard upgrade corresponding software, very trouble.
(2) client-based whiteboard system can not use at various platforms, can only not have professional platform independence for certain whiteboard system of certain platform development, so that there is limitation in the whiteboard system of exploitation.
(3) client-based whiteboard system needs client and server to communicate with one another by network, during for the concurrent operations of each collaboration user, need to communicate between different clients and the server, so that process processing time and the network performance of concurrent operations direct relation is arranged, particularly need a plurality of packets in the forwarding of different clients and server end, have the slow technical problem of processing speed.
Summary of the invention
The first purpose of the present invention is to provide a kind of network based on cloud computing public whiteboard system, need to could use, not have the technical problem of professional platform independence in the client that each terminal is installed this electronic whiteboard to solve in the prior art.
The public whiteboard system of a kind of network based on cloud computing, comprise various terminals, the public blank platform of network, described terminal is set up and the communicating by letter of the public blank platform of described network by browser, wherein, the public blank platform of described network further comprises transmission unit, UI unit, foreground and public blank processing unit, wherein
Transmission unit: communicating by letter between the browser that is used for setting up terminal and the public blank platform of network;
UI unit, foreground, at least comprise and show subelement and mutual subelement, described demonstration subelement is used for the browser of data in described terminal shown, described mutual subelement is used for by the input operation on the message hook intercepting and capturing terminal browser, and is sent to public blank processing unit by transmission unit;
Public blank processing unit: be used for the various operating datas on the receiving terminal browser, process the request between the different user, and coordinate each user's concurrent processing, and result is shown by the terminal browser of UI unit, foreground in correspondence by the transmission unit transmission again.
The public blank control method of a kind of network based on cloud computing comprises:
Described user registers at the public blank platform of network in advance;
When this user operates the public blank of network in advance, by the public blank platform of this network of browser access;
The public blank platform of described network authenticates first, intercepts and captures input operation on the terminal browser by message hook again after authentication is passed through, and transfers to the public blank platform of network;
Various operating datas on the public blank platform of the network receiving terminal browser are processed the request between the different user, and coordinate each user's concurrent processing, and with the result transmission, data are shown in the browser of described terminal again.
Compared with prior art, the present invention has the following advantages:
(1) the present invention is based on cloud computing and realize, can come the public blank of operational network with browser, need not to install client, need not upgrading, convenient and swift; Simultaneously, native system carries out collaborative editing control beyond the clouds and picture and text are set type, and reduces the requirement to the client computing capability; Simultaneously, its cross-platform disposal ability is powerful, can support various mainstream operation system platforms and mobile-terminal platform; Simultaneously, its crawl of powerful data and data transaction ability, native system can easily various types of data importings be arrived altogether public blank, and public blank data are exported as the data format that meets international standard, so that can carry out seamless combination with other data system.
(2) in the prior art, client-based whiteboard system needs client and server to communicate with one another by network, during for the concurrent operations of each collaboration user, need to communicate between different clients and the server, so that process processing time and the network performance of concurrent operations direct relation is arranged, particularly need a plurality of packets in the forwarding of different clients and server end, have the slow technical problem of processing speed.And among the present invention, based on the whiteboard system of browser, the user directly logins to platform by browser, when platform is processed concurrent operations again, only needs to coordinate on the platform to get final product, and the speed of processing concurrent operations is fast, does not have time delay.
Description of drawings
Fig. 1 is a kind of schematic diagram of the public whiteboard system of network based on cloud computing;
Fig. 2 is the schematic diagram of the public blank platform of a kind of network based on cloud computing;
Fig. 3 is the flow chart that the public blank of a kind of network based on cloud computing is processed;
Fig. 4 A-Fig. 4 E is respectively the collaborative editing view based on lock of upgrading operation;
Fig. 5 A-Fig. 5 C is respectively the collaborative editing view of deletion action;
Fig. 6 A-Fig. 6 D is respectively the collaborative editing view based on lock of upgrading operation.
Embodiment
Below in conjunction with accompanying drawing, specify the present invention.
See also Fig. 1 and Fig. 2, the public whiteboard system of a kind of network based on cloud computing, comprise various terminals 1, the public blank platform 2 of network, terminal 1 is set up and the communicating by letter of the public blank platform 2 of described network by browser, wherein, the public blank platform 2 of network further comprises transmission unit 21, UI unit, foreground 22 and public blank processing unit 23, wherein
Transmission unit 21: communicating by letter between the browser that is used for setting up terminal 1 and the public blank platform 2 of network.Transmission unit 21 further comprises data enciphering/deciphering subelement 211 and transmission subelement 212.Data enciphering/deciphering subelement 211 is used for the enciphering/deciphering operation at data transmission procedure, namely then wish is sent data as transmitting terminal and is encrypted operation, then the data that receive is decrypted operation as receiving terminal.Transmission subelement 212 mainly is to preserve login to the address information of the terminal of this platform, namely login by terminal A such as user 1, user 2 logins by terminal B, then transmit the address information that subelement 212 need to record respectively terminal A, terminal B, and the mapping relations of recording user 1 and terminal A, the mapping relations of user 2 and terminal B are in order to send data to corresponding terminal.
UI unit, foreground 22, at least comprise and show subelement 221 and mutual subelement 222, described demonstration subelement 221 is used for the browser of data in described terminal shown, described mutual subelement 222 is used for by the input operation on the message hook intercepting and capturing terminal browser, and is sent to public blank processing unit 23 by transmission unit 21;
Public blank processing unit 23: be used for the various operating datas on the receiving terminal browser, process the request between the different user, and coordinate each user's concurrent processing, and result is shown by the terminal browser of UI unit, foreground in correspondence by the transmission unit transmission again.
Described public blank processing unit 23 further comprises:
Cloud collaborative editing engine 231: for the treatment of the request of different user, calculating different user needs the operation carried out separately.
Cloud atlas literary composition mixing engine 232: be used for to carry out corresponding composing operation according to the request that receives.
When public blank processing unit mainly is when transmitting, show, editing the categorical datas such as literal, figure, form, audio frequency and video, cloud collaborative editing engine 231 can receive the request of different user, and process this user's request, when the parallel processing conflict appears in those users, process according to default processing contention mechanism, if the editor of literal, figure, form etc., by cloud atlas literary composition mixing engine 232 processing of setting type.How carrying out image mixed character typeset is prior art, just describes in detail at this again.
Subelement 233 is processed in the data crawl: be used for receiving terminal and from network various data grasped, and those data are added in the public blank of described network.The data crawl is processed subelement 233 and can be supported the user from network various data to be joined the common public blank of network very easily, as the picture and text of other webpage being dragged in the public blank of network, can support the document of office and pdf form is added in the public blank of network.
Cloud stores processor subelement 234: be used for receiving user's storage resource request, store the corresponding public blank data message of network as the unit take the user.
The cloud data derive subelement 235: be used for the request of receiving terminal, the service that is downloaded to user's counterpart terminal is provided.
User management subelement 236: be used for receiving and preserving user profile, when terminal is carried out the public blank operation of network, in advance user corresponding to this terminal authenticated, authentication is by carrying out the public blank operation of network.
Cloud print management subelement 237: support the user to generate printable pdf file at the platform end, and pass client back.
Say that simply the present invention proposes a kind of public whiteboard system of network of realizing based on cloud computing, can access public whiteboard system in browser, supports windows, mac, the various platforms such as ios, android.Native system is divided into three parts: foreground display module, transport module, the public whiteboard module in backstage.Wherein the foreground display module is responsible for and user interactions, accepts user's input, and the data that server returns are processed; Wherein transport module is responsible for the transfer of data between forward and backward; Wherein the public whiteboard module in backstage is responsible for processing the data that transmit on the foreground, and carries out coordinated management.
See also Fig. 3, the public blank control method of a kind of network based on cloud computing comprises:
S110: described user registers at the public blank platform of network in advance;
S120: when this user operates the public blank of network in advance, by the public blank platform of this network of browser access;
S130: the public blank platform of described network authenticates first, intercepts and captures input operation on the terminal browser by message hook again after authentication is passed through, and transfers to the public blank platform of network;
S140: the various operating datas on the public blank platform of the network receiving terminal browser, process the request between the different user, and coordinate each user's concurrent processing, and with the result transmission, again data are shown in the browser of described terminal.
When a plurality of users operate same object in the public blank, can produce conflict, for solving this conflict, the applicant has proposed the method for two kinds of collaborative editings: based on the collaborative editing of operation conversion, based on the collaborative editing of locking.
(1), the collaborative editing of changing based on operation.
Thinking roughly: each object records the old version of oneself, the version that each operation all can upgrading object.Each operation of user is what certain version for certain object carried out; When a plurality of users operated certain version V of an object simultaneously, the version of object can be upgraded to W after first operation was carried out.Follow-up operation since for be version V, can not directly carry out, subsequent operation need to be converted to the operation for latest edition W.
That is the concurrent processing of, coordinating each user further comprises:
Each object of user's pre-operation is arranged object old version tabulation, operate each time just this object version of upgrading in this object old version tabulation of this object;
When the multi-user operates certain version of an object simultaneously, in the operation queue of this object, operate, the operation of arrangement is carried out successively;
After first operation is carried out in the tabulation of object old version this object version of upgrading, and the result after will carrying out returns to each user's counterpart terminal and shows;
The second user of the operation queue of this object just can not directly carry out for the object of early version, subsequent operation need to be converted to for this object version after the upgrading just can operate,
Until all operations are finished in the operation queue of this object.
That the operation of object is divided into is newly-built, upgrade (such as translation, rotation, insertion character etc.), three kinds of deletions.For the newly-built collision problem that do not exist, do not need to process, the situation that renewal and deletion can be run into a plurality of users' operating collision usually, the below explains concrete principle with renewal and deletion:
(1) upgrades the collaborative editing that operates
A) the latter half is two user A and the B of simulation among Fig. 4 A, and the version number of object O all is 100 on their version.The first half is the server end of simulation, comprises " operation queue of object O " and " latest edition of object O on the server ", and version number is 100.
Party A-subscriber and party B-subscriber almost initiate operation P1 and the P2 to object O simultaneously, please note that all operations is all relevant with object and version number, and for example the implication of Fig. 4 A " O, P1,100 " is: No. 100 versions of object O are carried out the P1 operation; The implication of Fig. 4 A " O, P2,100 " is: No. 100 versions of object O are carried out the P2 operation.
B) two operations send to after the server, rank in the operation queue of object O, and the operation of queuing successively order is carried out.At first carry out the operation " O, P1,100 " (seeing also Fig. 4 B) that A initiates.
C) operation " O, P1,100 " carry out at server, with the object O on the server from 100 version updating to 101 versions.101 versions after the renewal can send to party A-subscriber and party B-subscriber's (seeing also Fig. 4 C) immediately.
D) after first operation of the operation queue of object O executes, begin to carry out second operation " O, P2,100 ".Because second operation is for No. 100 versions of object O, so can not carry out, need to operate conversion, " O, P2,100 " are converted to operation " O, P3,101 " for No. 101 versions of object O.Then executable operations " O, P3,101 " (seeing also Fig. 4 D) on the latest edition of object O.
E) on 101 versions of object O executable operations " O, P3,101 " afterwards, the object O on the server is from 101 edition upgradings to 102 versions.The latest edition that immediately goes up the O object on the server sends among party A-subscriber and the party B-subscriber and (sees also Fig. 4 E).
(2) collaborative editing of deletion action
A) collaborative editing of deletion action with upgrade class of operation seemingly, but more simple to operate than upgrading, main flow process is as follows:
The latter half is two user A and the B of simulation among Fig. 5 A, and the version number of object O all is 100 on their version.The first half is the server end of simulation, comprises " operation queue of object O " and " latest edition of object O on the server ", and version number is 100.
Party A-subscriber and party B-subscriber almost initiate operation P1 and the P2 to object O simultaneously, and wherein P1 is deletion action, and P2 upgrades or deletion action.Please note that all operations is all relevant with object and version number, for example the implication of " O, P1,100 " of figure below is: to No. 100 version executable operations P1 of object O; The implication of figure below " O, P2,100 " is: to No. 100 version executable operations P2 of object O.
B) two operations send to after the server, rank in the operation queue of object O, and the operation of queuing successively order is carried out.At first carry out the deletion action " O, P1,100 " (seeing also Fig. 5 B) that A initiates.
C) carry out on the server after the deletion action to object O, can be synchronized to immediately party A-subscriber and party B-subscriber, its object O is deleted; And on the server in the operation queue of object O all subsequent operations all will lose efficacy, need not to carry out (seeing also Fig. 5 C).
(2), based on the collaborative editing of locking.
Thinking roughly: each object records the old version of oneself, the version that each operation all can upgrading object.Each operation of user is what certain version for certain object carried out; When a plurality of users operate an object simultaneously, all need to the server request of object of initiating to lock, synchronization only has a user to obtain the lock of this object, only has the user who obtains lock could operate this object.
That is the concurrent processing of, coordinating each user further comprises:
Each object of user's pre-operation is arranged object old version tabulation, operate each time just this object version of upgrading in this object old version tabulation of this object;
When the multi-user operates certain version of an object simultaneously, send the processing that locks of this object to server, server gives locking of this object according to certain mechanism to a certain user, receives this user to the operation of this object;
After operation is carried out in the tabulation of object old version this object version of upgrading, and the result after will carrying out returns to each user's counterpart terminal and shows;
Discharge the lock of this object, server receives the request of locking.
That the operation of object is divided into is newly-built, upgrade (such as translation, rotation, insertion character etc.), three kinds of deletions.For the newly-built collision problem that do not exist, do not need to process, the situation that renewal and deletion can be run into a plurality of users' operating collision usually, the below explains concrete principle with renewal and deletion:
1,Upgrade the collaborative editing of operation
A) Fig. 6 A the latter half is two user A and the B of simulation, and the version number of object O all is 100 on their version.The first half is the server end of simulation, comprises " Lock manager of object O " and " latest edition of object O on the server ", and version number is 100.
Party A-subscriber and party B-subscriber almost initiate lock request LR1 and the LR2 to object O simultaneously.Please note that all operations is all relevant with object and version number, for example the implication of Fig. 6 A " O, LR1 " is: execution adds latching operation LR1 to object O; The implication of Fig. 6 A " O, LR2 " is: execution adds latching operation LR2 to object O.
B) Lock manager of the object O of server end finds that the party A-subscriber initiates first application, so give the party A-subscriber with the lock of object O, means and only have the party A-subscriber can operate the O object that B can't operate the O object.At this moment, the party A-subscriber initiates operation " O, P1,100 ", and implication is No. 100 version executable operations P1 (seeing also Fig. 6 B) for object O.
C) on the server after No. 100 version executable operations P1 to object O, edition upgrading to No. 101 is synchronized to party A-subscriber and party B-subscriber simultaneously immediately, with the edition upgrading of its object O to 101 versions (seeing also Fig. 6 C).
D) party A-subscriber need to discharge the row that is locked into of object O at last.A initiates operation " O, RL ", and server is carried out after this operation, and object O is in not locking state, can again accept each user's the request of locking (seeing also Fig. 6 D).
2,The collaborative editing of deletion action
The collaborative collaborative editings than those several together renewal operations of deletion action.
When described terminal is set up with the communicating by letter of the public blank platform of described network by browser, be encrypted processing at transmitting terminal, be decrypted processing at receiving terminal.
The method also comprises:
Receiving terminal grasps various data from network, and those data are added in the described blank;
Receive user's storage resource request, store the corresponding public blank data message of network as the unit take the user;
The request of receiving terminal provides the service that is downloaded to user's counterpart terminal.
The preferred embodiment of the present invention just is used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and only is described embodiment.Obviously, according to the content of this specification, can make many modifications and variations.These embodiment are chosen and specifically described to this specification, is in order to explain better principle of the present invention and practical application, thereby the technical field technical staff can utilize the present invention well under making.The present invention only is subjected to the restriction of claims and four corner and equivalent.
Claims (10)
1. public whiteboard system of the network based on cloud computing, it is characterized in that, comprise various terminals, the public blank platform of network, described terminal is set up and the communicating by letter of the public blank platform of described network by browser, wherein, the public blank platform of described network further comprises transmission unit, UI unit, foreground and public blank processing unit, wherein
Transmission unit: communicating by letter between the browser that is used for setting up terminal and the public blank platform of network;
UI unit, foreground, at least comprise and show subelement and mutual subelement, described demonstration subelement is used for the browser of data in described terminal shown, described mutual subelement is used for by the input operation on the message hook intercepting and capturing terminal browser, and is sent to public blank processing unit by transmission unit;
Public blank processing unit: be used for the various operating datas on the receiving terminal browser, process the request between the different user, and coordinate each user's concurrent processing, and result is shown by the terminal browser of UI unit, foreground in correspondence by the transmission unit transmission again.
2. the public whiteboard system of the network based on cloud computing as claimed in claim 1 is characterized in that, described public blank processing unit further comprises:
Cloud collaborative editing engine: for the treatment of the request of different user, calculating different user needs the operation carried out separately;
Cloud atlas literary composition mixing engine: be used for to carry out corresponding composing operation according to the request that receives.
3. the public whiteboard system of the network based on cloud computing as claimed in claim 2 is characterized in that, described public blank processing unit also comprises:
Subelement is processed in the data crawl: be used for receiving terminal and from network various data grasped, and those data are added in the described blank.
4. the public whiteboard system of the network based on cloud computing as claimed in claim 2 is characterized in that, described public blank processing unit also comprises:
Cloud stores processor subelement: be used for receiving user's storage resource request, store the corresponding public blank data message of network as the unit take the user
The cloud data derive subelement: be used for the request of receiving terminal, the service that is downloaded to user's counterpart terminal is provided.
5. the public whiteboard system of the network based on cloud computing as claimed in claim 2 is characterized in that, described public blank processing unit also comprises:
The user management subelement: be used for receiving and preserving user profile, when terminal is carried out the public blank operation of network, in advance user corresponding to this terminal authenticated, authentication is by carrying out the public blank operation of network.
6. the public blank control method of the network based on cloud computing is characterized in that, comprising:
Described user registers at the public blank platform of network in advance;
When this user operates the public blank of network in advance, by the public blank platform of this network of browser access;
The public blank platform of described network authenticates first, intercepts and captures input operation on the terminal browser by message hook again after authentication is passed through, and transfers to the public blank platform of network;
Various operating datas on the public blank platform of the network receiving terminal browser are processed the request between the different user, and coordinate each user's concurrent processing, and with the result transmission, data are shown in the browser of described terminal again.
7. method as claimed in claim 6 is characterized in that, the concurrent processing of coordinating each user further comprises:
Each object of user's pre-operation is arranged object old version tabulation, operate each time just this object version of upgrading in this object old version tabulation of this object;
When the multi-user operates certain version of an object simultaneously, in the operation queue of this object, operate, the operation of arrangement is carried out successively;
After first operation is carried out in the tabulation of object old version this object version of upgrading, and the result after will carrying out returns to each user's counterpart terminal and shows;
The second user of the operation queue of this object just can not directly carry out for the object of early version, subsequent operation need to be converted to for this object version after the upgrading just can operate,
Until all operations are finished in the operation queue of this object.
8. method as claimed in claim 6 is characterized in that, the concurrent processing of coordinating each user further comprises:
Each object of user's pre-operation is arranged object old version tabulation, operate each time just this object version of upgrading in this object old version tabulation of this object;
When the multi-user operates certain version of an object simultaneously, send the processing that locks of this object to server, server gives locking of this object according to certain mechanism to a certain user, receives this user to the operation of this object;
After operation is carried out in the tabulation of object old version this object version of upgrading, and the result after will carrying out returns to each user's counterpart terminal and shows;
Discharge the lock of this object, server receives the request of locking.
9. method as claimed in claim 6 is characterized in that, also comprises: when described terminal is set up with the communicating by letter of the public blank platform of described network by browser, be encrypted processing at transmitting terminal, be decrypted processing at receiving terminal.
10. method as claimed in claim 6 is characterized in that, also comprises:
Receiving terminal grasps various data from network, and those data are added in the described blank;
Receive user's storage resource request, store the corresponding public blank data message of network as the unit take the user;
The request of receiving terminal provides the service that is downloaded to user's counterpart terminal.
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| CN2012100820389A Pending CN102916998A (en) | 2012-03-26 | 2012-03-26 | Network public whiteboard system and method based on cloud computing |
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| CN103281314A (en) * | 2013-05-13 | 2013-09-04 | 南昊（北京）科技有限公司 | Electronic whiteboard based on priority and interaction method thereof |
| CN103281315A (en) * | 2013-05-13 | 2013-09-04 | 南昊（北京）科技有限公司 | Electronic whiteboard and interaction method thereof |
| CN103997486A (en) * | 2014-04-30 | 2014-08-20 | 广州视睿电子科技有限公司 | Method and system for interaction between different operating system platform whiteboards |
| CN106127065A (en) * | 2016-06-15 | 2016-11-16 | 实创时新（北京）科技有限公司 | A kind of data conversion method serviced for online collaborative editing and system |
| CN108667820A (en) * | 2018-04-20 | 2018-10-16 | 苏州科达科技股份有限公司 | Shared electronic whiteboard encryption method, system, electronic equipment, storage medium |
| CN109194642A (en) * | 2018-08-28 | 2019-01-11 | 深圳市创维群欣安防科技股份有限公司 | Blank remote synchronization processing method, system and storage medium |
| CN109753620A (en) * | 2018-12-27 | 2019-05-14 | 永中软件股份有限公司 | web document processing method and system |
| CN109766093A (en) * | 2019-01-17 | 2019-05-17 | 宜创(北京)科技有限公司 | Cooperate with method, apparatus, electronic equipment and the storage medium of real-time edition |
| CN111245801A (en) * | 2020-01-04 | 2020-06-05 | 深圳市编玩边学教育科技有限公司 | Online interactive collaboration system |
| CN111404946A (en) * | 2020-03-19 | 2020-07-10 | 北京比特安索信息技术有限公司 | Browser-based account authentication method and server |
| CN113157192A (en) * | 2021-03-12 | 2021-07-23 | 杭州海康威视系统技术有限公司 | Whiteboard editing method and device, electronic equipment and storage medium |
| CN115706811A (en) * | 2021-08-17 | 2023-02-17 | 上海幻电信息科技有限公司 | Data processing method and device |
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| CN109753620A (en) * | 2018-12-27 | 2019-05-14 | 永中软件股份有限公司 | web document processing method and system |
| CN109753620B (en) * | 2018-12-27 | 2021-02-12 | 永中软件股份有限公司 | Webpage document processing method and system |
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| CN111245801A (en) * | 2020-01-04 | 2020-06-05 | 深圳市编玩边学教育科技有限公司 | Online interactive collaboration system |
| CN111245801B (en) * | 2020-01-04 | 2022-06-17 | 深圳市编玩边学教育科技有限公司 | Online interactive collaboration system |
| CN111404946A (en) * | 2020-03-19 | 2020-07-10 | 北京比特安索信息技术有限公司 | Browser-based account authentication method and server |
| CN111404946B (en) * | 2020-03-19 | 2023-06-06 | 北京比特安索信息技术有限公司 | Account authentication method based on browser and server |
| CN113157192A (en) * | 2021-03-12 | 2021-07-23 | 杭州海康威视系统技术有限公司 | Whiteboard editing method and device, electronic equipment and storage medium |
| CN113157192B (en) * | 2021-03-12 | 2024-02-27 | 杭州海康威视系统技术有限公司 | Whiteboard editing method and device, electronic equipment and storage medium |
| CN115706811A (en) * | 2021-08-17 | 2023-02-17 | 上海幻电信息科技有限公司 | Data processing method and device |
| WO2023020091A1 (en) * | 2021-08-17 | 2023-02-23 | 上海幻电信息科技有限公司 | Data processing method and apparatus |
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