CN101567798A - System and method for realizing electronic whiteboard conference based on IP multimedia system configuration - Google Patents
System and method for realizing electronic whiteboard conference based on IP multimedia system configuration Download PDFInfo
- Publication number
- CN101567798A CN101567798A CN200910142311.0A CN200910142311A CN101567798A CN 101567798 A CN101567798 A CN 101567798A CN 200910142311 A CN200910142311 A CN 200910142311A CN 101567798 A CN101567798 A CN 101567798A
- Authority
- CN
- China
- Prior art keywords
- blank
- leaf
- terminal
- sip
- mrs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
-
- 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
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- 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
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention provides a system for realizing electronic whiteboard conference based on IP multimedia system configuration, which includes AS, MRS and at least two SIP terminals which are connected through a communication network, wherein, the AS is used for carrying out whiteboard conference for the SIP terminals and the MRS through SIP signaling to control the MRS, establishing XMPP whiteboard conference channel between the SIP terminals, and receiving and forwarding whiteboard operation control information between the SIP terminals through the XMPP whiteboard conference channel so as to realize whiteboard information shared between the SIP terminals; the SIP terminals is used for establishing XMPP whiteboard conference channel between the MRS, carrying out whiteboard operation or controlling, and transmitting or receiving the whiteboard operation controlling information through the XMPP whiteboard conference channel. The system and a method of the present invention realize function of convoking the electronic whiteboard conference under IMS configuration environment.
Description
Technical field
The present invention relates in the IMS intelligent network communication field, relate in particular to a kind of realization system of the electronic whiteboard conference based on IP multimedia system framework.
Background technology
Because IMS (IP multimedia system, IP Multimedia Subsystem) is a scale and the quite wide system of range of application.From user's expenditure, not only comprise the application of PC, pocketPC client and personal mobile phone side, also comprise simultaneously the application of multimedia conferencing etc.As if in a word, so long as people's electronic information environment that can touch now, the ground of using of IMS is arranged all.In fact, the application of every field is not only powerful, between relation also inseparable.
SIP (session initiation protocol, Session Initiation Protocol) is the signaling control protocol of an application layer, is used to create, revise and discharge one or more participants' session.These sessions can seem Internet multimedia conferencing, IP phone or multimedia distribution.The participant of session can communicate by multicast (multicast), netted clean culture (unicast) or both mixtures.
(scalable message is handled on-the-spot agreement to XMPP, Extensible Messaging and PresenceProtocol) is based on extend markup language (XML, Extensible Markup Language) agreement, it is used for instant message (IM, Instant Messages) and online on-the-spot the detection.It is at the accurate real time operation that promotes between the server.This agreement may finally allow the Internet user to transfer immediate news to all other men on the internet, even its operating system is different with browser.
Electronic whiteboard (hereinafter to be referred as blank) is meant the technology of a kind of participant by certain interface Real-Time Sharing data and cooperation, the operation of any participant on electronic whiteboard, comprise simple graphic plotting, literal input etc., can share with other participants in real time.More complicated blank wants support window to share and local multimedia link and embedding, and each graphic entity can be saved in the file as object.
Though software field provides the conference software of whiteboard session to have much at present, typical representative is exactly the NetMeeting of Microsoft.The limitation of these software maximums is to set up separately independently on the platform, and be not to be based on this platform architecture exploitation of IMS, along with the extensive utilization of IMS, when need be in the IMS system holding whiteboard session between the sip terminal of a plurality of different cut-in methods, they just seem powerless.
Therefore, under the IMS environment, realize that the whiteboard session function has just needed the new method and system of a cover.This also is a driving reason of the present invention.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of realizing electronic whiteboard conference system and method based on IP multimedia system framework, to be implemented in the function of holding whiteboard session under the IMS architecture environment.
For solving above technical problem, the invention provides a kind of realizing electronic whiteboard conference system based on IP multimedia system framework, this system comprises application server AS, Media Resource Server MRS and at least two sip terminals that link to each other by communication network, wherein,
Described AS is used for by Session initiation Protocol SIP signaling described sip terminal and described MRS being carried out whiteboard session control, comprises the foundation that the establishment of controlling whiteboard session and scalable message are handled on-the-spot agreement XMPP whiteboard session passage;
Described MRS, be used to set up and described sip terminal between XMPP whiteboard session passage, and receive and transmit blank control information operation between the sip terminal by described XMPP whiteboard session passage, realize the blank information sharing between the described sip terminal;
Described sip terminal is used for XMPP whiteboard session passage between foundation and the described MRS, and carries out blank operation or control, and sends or receive the blank control information operation by described XMPP whiteboard session passage.
Further, when described sip terminal is created blank page or leaf or pel, also be used to generate unique blank page or leaf sign of the overall situation or pel sign, described sip terminal and described MRS also are used for blank page or leaf or the primitive information that buffer memory is created or received, described sip terminal or described MRS adopt described blank page or leaf or pel sign when secondary sends blank control information operation about described blank page or leaf or primitive information, and are identified at the complete information of searching described blank page or leaf or pel in the buffer memory according to described blank page or leaf or pel.
Further, described sip terminal and described MRS adopt identical page replacement algorithm and caching page number to carry out buffer memory, and described page replacement algorithm is random algorithm, fifo algorithm, recent minimum use algorithm, did not use algorithm or least often use algorithm or the page fault frequency method at most.
Further, described AS also is used for controlling the authority of described sip terminal and the state of passage thereof by the SIP signaling, the authority of described sip terminal is message pick-up power, blank operation power or blank control, corresponding channel status is unidirectional receiving media stream mode or bidirectional transmit-receive Media Stream state, and blank operation power refers to current blank page or leaf is increased, revises and deletes the right of pel operation; The blank control comprises blank operation power and creates, opens, deletes the right of blank page or leaf and page turning.
For solving above technical problem, the present invention also provides a kind of and realizes the method for electronics from the plate meeting based on IP multimedia system framework, the application server AS that this method links to each other by communication network, Media Resource Server MRS, and at least one sip terminal realize, comprising:
Described AS utilizes Session initiation Protocol and described sip terminal and described MRS to carry out Signalling exchange and creates whiteboard session, and control sip terminal and MRS set up the XMPP whiteboard session passage between described sip terminal and the described MRS;
The sip terminal that has from plate operation or control carries out blank operation or control and generating run control information;
The described sip terminal that has blank operation or a control sends to described MRS with the XMPP whiteboard session passage of described control information operation by correspondence;
Described MRS receives and is transmitted to other SIM terminals by the XMPP whiteboard session passage of correspondence.
Further, when described sip terminal is created blank page or leaf or pel, generate unique blank page or leaf sign of the overall situation or pel sign, described sip terminal and described MRS carry out buffer memory to blank page or leaf or the primitive information created or receive, if described sip terminal or described MRS secondary send the blank control information operation about described blank page or leaf or primitive information, then adopt described blank page or leaf or pel sign, and be identified at the complete information of searching described blank page or leaf or pel in the buffer memory according to the described blank page or leaf or the pel that receive.
Further, described blank operation power refers to current blank page or leaf is increased, revises and deletes the right of pel operation; Described blank control comprises blank operation power and creates, opens, deletes the right of blank page or leaf and page turning that the blank operation or the control of described sip terminal are controlled by the SIP signaling by described AS.
For solving above technical problem, the present invention also provides a kind of method that realizes electronic whiteboard conference based on IP multimedia system framework, this method realizes that based on the application server AS that links to each other by communication network, Media Resource Server MRS, SIP host terminal and at least one SIP participant terminal the flow process that whiteboard session is created comprises:
Described SIP host terminal sends the whiteboard session request to create to described AS;
Described AS creates whiteboard session, and transmits described request to described MRS;
Set up the XMPP whiteboard session passage of described SIP host terminal, comprising: described AS is that described SIP host terminal is to described MRS application IMS conference medium passage; Described MRS prepares the media channel resource, and notifies described SIP host terminal by described AS; Set up described XMPP whiteboard session passage between described SIP host terminal and the described MRS;
Set up the XMPP whiteboard session passage of described at least one SIP participant terminal, comprising: described AS utilizes virtual media information to be SIP participant terminal to apply IMS conference medium passage; Described MRS prepares the media channel resource, and notifies described SIP participant terminal by described AS; Described SIP participant terminal is notified described MRS with real media information by described AS; Set up described XMPP whiteboard session passage between described SIP participant terminal and the described MRS.
Further, the blank of described whiteboard session operation control flow comprises:
Described SIP host terminal or participant's terminal are carried out blank operation or control and generating run control information, described blank operation refers to increase on current blank page or leaf, the right of revising or deleting pel, and described blank control refers to create, opens, deletes blank page or leaf or page turning;
Described SIP host terminal or participant's terminal by the XMPP whiteboard session passage between itself and the MRS to described MRS transmit operation control information;
Described MRS receives described control information operation, and transmits described control information operation by the XMPP whiteboard session passage between itself and other participant's terminal to other participant's terminals;
Described other participant's terminals receive described control information operation.
Further, described blank page or leaf or pel generate unique blank page or leaf sign of the overall situation or pel sign, blank page or leaf that described SIP host terminal, described SIP participant terminal and described MRS buffer memory are created or received or net element information and blank page or leaf sign or pel sign by described SIP host terminal or participant's terminal when creating; Described SIP host terminal, when described SIP participant terminal and described MRS send described blank page or leaf or primitive information first, in described control information operation, comprise described blank page or leaf or primitive information and blank page or leaf sign or pel sign, when secondary sends, in described control information operation, carry the blank page or leaf sign or the network element ID of described blank page or leaf or network element, described SIP host terminal, described SIP participant terminal and described MRS search buffer memory according to described blank page or leaf sign or network element ID, if do not find, then ask described SIP host terminal, described SIP participant terminal and described MRS send complete blank page or leaf or net element information.
Whiteboard session of the present invention realizes that system and method realized sharing of data in the whiteboard session by the XMPP whiteboard session passage of setting up, realized holding under the IMS architecture environment function of whiteboard session, and blank modification synchronously, page turning, mark, operating right control flexibly.
Description of drawings
Fig. 1 is the schematic diagram that the present invention is based on the realizing electronic whiteboard conference system of IMS framework.
Fig. 2 is the flow chart that the present invention is based on the realizing electronic whiteboard conference method of IMS framework.
Fig. 3 is the signaling process figure that whiteboard session of the present invention is created.
Figure 4 and 5 are medium signaling process figure of whiteboard session of the present invention.
Fig. 6 is the authority application flow chart of whiteboard session of the present invention.
Embodiment
The present invention is based on the realization system of the electronic whiteboard conference of IP multimedia system framework (IMS), as shown in Figure 1, this system 1 comprises by communication network 10 continuous application server AS (ApplicantServer) 20, Media Resource Server MRS (Multimedia Resource Server) 30 and two sip terminals (terminal 1, terminal 2) at least, wherein
Described application server 10 is used for by the SIP signaling described sip terminal and described MRS being carried out whiteboard session control, and control content comprises establishment, deletion whiteboard session, adds, withdraws from the member, provides, changes authority and foundation, disconnection passage.
Described MRS 20 is used for XMPP whiteboard session passage between foundation and the described sip terminal, and by the blank control information operation between described XMPP whiteboard session passage reception and the forwarding sip terminal, realizes the blank information sharing between the described sip terminal;
Described sip terminal is used for XMPP whiteboard session passage between foundation and the described MRS, and carries out blank operation or control, sends or receive the blank control information operation by described XMPP whiteboard session passage.
The control of blank that sip terminal carries out comprises establishments, deletes blank page or leaf, page turning, the operation of blank is comprised current blank page or leaf is increased, revises or deletes pel;
This application server AS 40 also can be set as to be had the module identical with its function and is integrated among the Media Resource Server MRS 30.Network 20 can be an IAD.
The present invention also provide application server AS that a kind of this method of method that realizes electronic whiteboard conference based on IP multimedia system framework links to each other by communication network, Media Resource Server MRS, and at least one sip terminal realize, comprising:
Step 201: described AS utilizes SIP (Session Initiation Protocol, Session initiation Protocol) carries out Signalling exchange with sip terminal and MRS and create whiteboard session, control sip terminal and MRS set up XMPP (Extensible Messaging and Presence Protocol, scalable message is handled on-the-spot agreement) the whiteboard session passage between sip terminal and the MRS;
SIP is used for initially, manages and stop the data session of packet network, particularly, is used to generate, revise and the session between one or more participants of terminating.
Step 202:SIP terminal is carried out blank operation or control and is generated the blank control information operation;
The sip terminal that carries out blank operation or control is the terminal that has blank operation or control, and blank operation power is meant uses the blank instrument current blank page or leaf to be increased, revises and delete the right of pel operation; The blank control comprises blank operation power and creates, opens, deletes the right of blank page or leaf and page turning; In a whiteboard session, there is and can only has a participant to have the blank control, but can have a plurality of participants to have blank operation power, the founder of meeting can authorize or permission modification.
According to the attribute of blank page or leaf, the blank page or leaf can be divided into structural blank page or leaf (do not comprise any pel, only represent a middle-level structure) and actual blank page or leaf.
Comprise a plurality of pels in the actual blank page or leaf, when reality is shared, send whole primitive information during each page turning, and some pel wherein may be a sign; To refer to the pel in the blank page or leaf be actual content rather than sign to said whole page infos among the present invention.
Step 203:SIP terminal sends to described MRS with the control information operation that the generates XMPP whiteboard session passage by correspondence, simultaneously the blank page or leaf that sent of record;
For binary pels such as pictures, should carry out the Base64 coding to its content, so that can in XMPP whiteboard session passage, transmit;
Step 204: described MRS preserves the blank page or leaf according to the replacement policy of page or leaf, receives and be transmitted to the SIM terminal of other participants simultaneously by the XMPP whiteboard session passage of correspondence;
The authority of described sip terminal comprises three kinds of message pick-up power, blank operation power and blank controls, the state of passage has two kinds of bidirectional transmit-receive Media Stream state and unidirectional receiving media stream modes, described sip terminal sends or receives authority change signaling by described AS, and revises rights state and channel status according to the authority change signaling that receives.
Step 205: other SIM terminals receive and according to described control information operation update displayed, current blank page or leaf is kept in the internal memory temporarily, rather than is kept on the hard disk, thereby has certain fail safe.
Because the operation that has a more than participant to have to revise the pel on blank page or leaf power, to the blank page or leaf that has blank control person to create, should be at MRS and other-end local cache, so effectively conserve network bandwidth, improve the efficient and the synchronism of page turning
With terminal among Fig. 11,2 two terminals of terminal is example, and one of them terminal label is UE# 1, and as the host, another terminal label is UE# 2, as conference member; Be implemented as follows:
When 1) UE# 1 sends a certain blank page or leaf first, write down the identification information (being blank page or leaf ID) of this blank page or leaf, when this blank page or leaf need send once more, the identification information that only sends this blank page or leaf got final product.For guaranteeing the uniqueness of blank page or leaf, blank page or leaf ID should adopt GUID (Globally Unique Identifier, the unified identifier of the overall situation), can guarantee like this in the blank control after changing, can not produce the problem of blank page or leaf ID conflict during page turning;
2) the blank page or leaf of MRS buffer memory some, when receiving that the blank page or leaf is identification information, in buffer memory, search the information of this blank page or leaf, as do not find, then circularize UE# 1 and require to resend complete blank page information, if find, then the blank page or leaf directly is transmitted to UE# 2, and selects blank page or leaf replacement policy/algorithm to preserve the blank page or leaf by MRS.
Wherein, the replacement algorithm of blank page or leaf can adopt random algorithm (RAND), fifo algorithm (First In First Out, FIFO), recent minimum use algorithm (Least Recently Used, LRU), do not use algorithm or least often use algorithm (Least Frequently Used at most, LFU) and page fault frequency method (Page Fault Frequency, PFF) dynamic page dispatching method etc., this example does not limit replacement policy;
When 3) MRS sent a certain blank page or leaf first, record had sent to ID number of this blank page or leaf of UE# 2, when this blank page or leaf need send once more, only sends the ID of this blank page or leaf;
4) the UE# 2 buffer memory all or the blank page or leaf of some, when receiving the ID of certain blank page or leaf, in buffer memory, search corresponding blank page or leaf, as do not find, circularize MRS and require to resend actual blank page information, if find, then show in the blank page or leaf of this ID, and select blank page or leaf replacement policy/algorithm to preserve the blank page or leaf of this ID by UE# 2.
When buffer memory part blank page or leaf, sip terminal adopts the identical page replacement policy and the number of caching page with MRS, can guarantee that sip terminal and MRS go up the consistency of the blank page or leaf of buffer memory, and then improve the hit rate that url page is searched.
Below in conjunction with accompanying drawing the constructive process of whiteboard session, the medium signaling process of whiteboard session and the authority application flow process of whiteboard session are elaborated, but not as a limitation of the invention.：
A: whiteboard session constructive process
In a whiteboard session, a SIP host terminal and at least one SIP participant terminal should be arranged in general, the flow process that whiteboard session is created comprises:
A1, described SIP host terminal send the whiteboard session request to create to described AS;
A2, described AS create whiteboard session, and transmit described request to described MRS;
A3, set up the XMPP whiteboard session passage of described SIP host terminal,
This step comprises: described AS is that described SIP host terminal is to described MRS application IMS conference medium passage; Described MRS prepares the media channel resource, and notifies described SIP host terminal by described AS; Set up described XMPP whiteboard session passage between described SIP host terminal and the described MRS;
A4, set up the XMPP whiteboard session passage of described at least one SIP participant terminal;
This step comprises: described AS utilizes virtual media information to be SIP participant terminal to apply IMS conference medium passage; Described MRS prepares the media channel resource, and notifies described SIP participant terminal by described AS; Described SIP participant terminal is notified described MRS with real media information by described AS; Set up described XMPP whiteboard session passage between described SIP participant terminal and the described MRS.
Below in conjunction with Fig. 3 the signaling process of blank conference creation is described:
As shown in Figure 3, the signaling process of whiteboard session constructive process is as follows:
Step 301:UE#1 (host's terminal) sends band SDP (Session Description Protocol, Session Description Protocol) INVITE () of information asks AS, the TCP link information (IP address and the port numbers that have this terminal among the SDP, be used for the foundation of XMPP whiteboard session passage), and the whiteboard session member who is invited tabulation;
In this step, the SDP agreement is to be used for describing Multimedia session announcement, Multimedia session invitation and the initialized agreement of other forms of Multimedia session.
The SIP signaling that step 302～304:AS forwarding UE# 1 sends to AS is to MRS, and MRS indicates the conference member number according to SDP information creating whiteboard session; If create successfully in the meeting-place, then reply 200OK (), AS returns ACK () after receiving answer;
Step 305～309: if whiteboard session is created successfully, AS sends INVITE () signaling to MRS, request adds this meeting with UE# 1, obtain the response 200OK () of MRS success, and return ACK () to MRS, to return MRS to UE# 1 be the ready media channel information of UE# 1 to AS then, sets up XMPP whiteboard session passage between UE# 1 and the MRS;
Step 310～318: this moment, UE# 2 did not adhere to meeting as yet, more do not inform its media information of AS, (UE# 2 adds among the MRS in order to incite somebody to action, AS wants a virtual UE# 2 terminal that possesses certain media information earlier, AS sends the INVITE signaling to MRS, media information this virtual UE# 2 in the INVITE signaling brings MRS, be UE# 2 application IMS conference medium passage, MRS carries out media negotiation and replys 200OK (), wherein carry the media information of MRS, AS returns ACK () after receiving answer, AS then sends the INVITE signaling that has the MRS media information and invites UE# 2 to add whiteboard session, if UE# 2 adheres to meeting, then in replying signaling 200OK (), add own real media information, and send to AS, AS is by sending the RE-INVITE signaling to MRS then, revise the media information of the UE# 2 on the MRS, MRS replys 200OK (), and AS returns ACK () after receiving answer; And then MRS notice UE# 2, the MRS resource is ready, can set up correct XMPP whiteboard session passage between MRS and the UE# 2;
Step 319～320:AS is by SIP signaling UE# 1, and UE# 2 has added meeting, and UE# 1 replys 200OK () to AS.
So far whiteboard session and special-purpose XMPP whiteboard session passage thereof are created and are finished.
B: blank operation and control flow
The blank operation control of described whiteboard session is shared flow process and is comprised:
B1: described SIP host terminal or participant's terminal are carried out blank operation or control and generating run control information, described blank operation refers to increase on current blank page or leaf, the right of revising or deleting pel, and described blank control refers to create, opens, deletes blank page or leaf or page turning;
B1: described SIP host terminal or participant's terminal by the XMPP whiteboard session passage between itself and the MRS to described MRS transmit operation control information;
B1: described MRS receives described control information operation, and transmits described control information operation by the XMPP whiteboard session passage between itself and other participant's terminal to other participant's terminals;
B1: described other participants receive described control information operation.
In order to improve the memory space that operation control is shared the efficient of flow process and effectively utilized each terminal and MRS, describedly when creating, generate unique blank page or leaf sign of the overall situation or pel sign, blank page or leaf that described SIP host terminal, described SIP participant terminal and described MRS buffer memory are created or received or net element information and blank page or leaf sign or pel sign by described SIP host terminal or participant's terminal from plate page or leaf or pel; Described SIP host terminal, when described SIP participant terminal and described MRS send described blank page or leaf or primitive information first, in described control information operation, comprise described blank page or leaf or primitive information and blank page or leaf sign or pel sign, when secondary sends, in described control information operation, carry the blank page or leaf sign or the network element ID of described blank page or leaf or network element, described SIP host terminal, described SIP participant terminal and described MRS search buffer memory according to described blank page or leaf sign or network element ID, if do not find, then ask described SIP host terminal, described SIP participant terminal and described MRS send complete blank page or leaf or net element information.
The medium signaling process of the blank operation control of the blank page and pel being shared in the flow process below in conjunction with Fig. 4, Fig. 5 describes:
As shown in Figure 4, the blank medium signaling process of whiteboard session specifically comprises:
Step 401:UE#1 (host's terminal) creates or opens the blank page or leaf, during page turning, sends the blank page information by XMPP whiteboard session passage to MRS;
In this step,, then send whole blank page informations and send page or leaf being labeled as in this blank page or leaf if current blank page or leaf is to send for the first time, and if current blank page or leaf had sent, then when sending the document page or leaf once more, only send the ID of this blank page or leaf;
Step 402: if MRS receives UE# 1 only is the ID of blank page or leaf, and the information of this blank page or leaf not on the MRS, then send iq (Information Query information inquiry to UE# 1, be similar to HTTP, also be a kind of message of request formula) request message, ask complete blank page information, change execution in step 403; If complete blank page information then directly is transmitted to UE# 2, select rational blank page or leaf replacement policy/algorithm to preserve this blank page or leaf simultaneously, change execution in step 404;
The iq request message of step 403:UE# 1 response MRS is replied complete blank page information;
Step 404:MRS transmits to UE# 2 by XMPP whiteboard session passage and send the blank page information.If current blank page or leaf is to send for the first time, then send whole blank page informations, and write down the member who is transmitted, otherwise, only send the ID in this blank page or leaf;
Step 405: if UE# 2 receives only is the ID of blank page or leaf, and UE# 2 do not find corresponding blank page or leaf in this locality, then sends the complete blank page information of iq message request to MRS, changes execution in step 406; Otherwise show the blank page or leaf in this blank page or leaf, select rational documentation page replacement policy/algorithm to preserve this blank page or leaf simultaneously;
The iq request message of step 406:MRS response UE# 2, reply complete blank page information to UE# 2, and if do not find corresponding complete blank page information, can take MRS directly to reply mistake, perhaps MRS is to the complete blank page information of UE# 1 request, and then is transmitted to method such as UE# 2;
Step 407～408:UE# 1 generates blank page or leaf sign to current blank page or leaf, and this blank page or leaf identification information is sent to MRS, and MRS preserves and transmits corresponding blank page or leaf identification information and gives UE# 2.
Except the processing mode by complete blank page information, primitive information and sign thereof of sip terminal and MRS buffer memory described above, also have following two kinds of processing modes:
Mode one, by sip terminal buffer memory complete blank page information, primitive information and identification information, MRS can save the storage resources on the MRS like this by the relevant only identification information of the blank page or leaf of buffer memory current active of algorithm of replacing, and improves the whiteboard session tenability of MRS;
Mode two: preserve all information by MRS, comprise blank page information, primitive information and identification information, when carrying out the transfer of blank control, obtain the terminal of blank control and can obtain blank page or leaf or the net element information that to operate easily like this.
As shown in Figure 5, the pel medium signaling process of whiteboard session specifically comprises:
Step 501, UE# 1 creates a new pel at current blank page or leaf, sends the information of this pel by XMPP whiteboard session passage to MRS, in this primitive information, except the information such as shape color of self, also must comprise pel affiliated blank page or leaf ID, pel position coordinate and level;
Step 502, MRS receives the information of newly-increased certain pel, refresh page information in the current page increases this primitive information on MRS, then transmits this primitive information and gives UE# 2, after UE# 2 receives this information, increases this pel at current page correspondence position and level
Step 503, UE# 1 revises a certain pel at current blank page or leaf, send the modification information of this pel to MRS by XMPP whiteboard session passage, in this pel modification information, except the information such as shape color of self, also must comprise pel affiliated blank page or leaf ID, pel position coordinate and level;
Step 504, MRS receives the information of revising certain pel, refresh page information in the current page is upgraded this primitive information on MRS, then transmits the modification information of this pel and gives UE# 2, after UE# 2 receives this information, upgrades this primitive information;
Step 505, UE# 1 sends the information of this pel of deletion at a certain pel of current blank page or leaf deletion to MRS by XMPP whiteboard session passage;
Step 506, MRS receives the information of certain pel of deletion, refresh page information in the current page is deleted this pel on MRS, and then transmit the information of this pel of deletion and give UE# 2, after UE# 2 receives this information, this pel of deletion in current page.
Equally, UE# 2 also can increase, revises and delete pel, and information is issued MRS, and forwarding information is to UE# 1 again for MRS then, and UE# 1 finishes corresponding operation.
C: authority change flow
Among the present invention, the authority of described SIP host terminal is the blank control, XMPP whiteboard session channel status between itself and the described MRS is a bidirectional transmit-receive Media Stream state, described SIP participant terminal is blank operation power or message pick-up power, corresponding XMPP whiteboard session channel status is bidirectional transmit-receive Media Stream state or unidirectional receiving media stream mode, and the flow process of described whiteboard session change authority comprises:
C1: the requesting party sends the change authority request by described AS to Requested Party, and described request side or Requested Party refer to described SIP host terminal or described SIP participant terminal;
C2: after described Requested Party was agreed, described AS notice described request side and described MRS revised corresponding XMPP whiteboard session channel status;
C3: other participant described request side rights state beyond the described AS notice described request side change.
As shown in Figure 6, the signaling process of UE# 2 application operation power comprises:
Step 601～602, UE#2 (rank-and-file member of conference participation) sends the INFO () message that has the applying right limit information to AS, and AS replys 200OK () to UE# 2;
Step 603～604:AS gives UE#1 (host's terminal) with the INFO () forwards that the UE# 2 application is authorized, and UE# 1 replys 200OK () to AS;
Step 605～608:AS sends INFO () message to UE# 2, changes UE# 2 and is " applying for operation power " at the state of whiteboard session, and UE# 2 replys 200OK () to AS, and AS transmits this INFO () message and gives UE# 1, and UE# 1 replys 200OK () to AS;
Step 609～610:UE# 1 passes through INFO () message to AS return authorization result---authorizes;
Step 611～613:AS sends to MRS with RE-INVITE () message, and revising the XMPP whiteboard session passage of UE# 2 on MRS is bidirectional transmit-receive Media Stream state " sendrecv ", and MRS replys 200OK () to AS, and AS returns ACK () after receiving answer;
Step 614～615:AS sends to UE# 2 and has the INFO () message of applying for successful result, and notice UE# 2 obtains in the control of whiteboard session or operation power, and UE# 2 replys 200OK () to AS;
Step 616～618:AS sends RE-INVITE () message to UE# 2, and the XMPP whiteboard session passage of revising UE# 2 is " sendrecv ", and UE# 2 replys 200OK () to AS, and AS returns ACK () after receiving answer;
It is the NOTIFY () message that associated rights is arranged that step 619～622:AS has the UE# 2 state to the UE# 1 transmission, notifies the conference site state of all participants to change: UE# 2 obtains control or operation power; UE# 1 replys 200OK () to AS, and it is the NOTIFY () message that associated rights is arranged that AS has the UE# 2 state to the UE# 2 transmission, and UE# 2 replys 200OK ().
Because of a plurality of terminals can have operation power simultaneously,, can not change operation power and the channel status thereof of UE# 1 so operate temporary when the UE# 2 application.
Above flow process is suitable for the change of control equally, and authority changes in the last step 619 and 621 of flow process and is handed down to UE# 1 and UE# 2 respectively, and UE# 1 and UE# 2 receive behind the notify according to the own corresponding rights state of the authority change that issues among the notify.If UE# 2 did not originally operate power and application control, can obtain the power of operating simultaneously, channel status can be changed into " sendrecv " in corresponding step
Terminal has three kinds of different authorities to comprise message pick-up power, blank operation power and blank control, corresponding XMPP whiteboard session channel status is respectively promptly unidirectional receiving media stream mode " recv ", bidirectional transmit-receive Media Stream state " sendrecv " and bidirectional transmit-receive Media Stream state.
For realizing above method and each flow process, realizing electronic whiteboard conference of the present invention system is specific as follows:
The realizing electronic whiteboard conference system that the present invention is based on IP multimedia system framework comprises application server AS, Media Resource Server MRS and at least two sip terminals that link to each other by communication network, wherein,
Described AS comprises transceiver module, conference management module and the passage control module that links to each other successively, and the authority management module that links to each other with conference management module, wherein,
Transceiver module, be used to receive and dispatch and described sip terminal and described MRS between the SIP signaling;
The meeting control module is used for described sip terminal and described MRS are carried out whiteboard session control, comprises that whiteboard session establishment, deletion, participant sip terminal add to withdraw from;
The passage control module, be used for described sip terminal and described MRS are carried out the whiteboard session channel management, comprise the foundation and the deletion of passage, when setting up passage, be included as described sip terminal to described MRS application IMS conference medium channel resource, and receive the ready information of resource of described MRS transmission and be transmitted to described sip terminal;
The control of authority module is used for the authority of described sip terminal and the state of XMPP whiteboard session passage are managed control.
Described MRS comprises that interconnective transceiver module and passage set up module, wherein,
Transceiver module, be used to receive and dispatch and described AS between the SIP signaling, and by the blank control information operation between the passage reception of XMPP whiteboard session and forwarding and the described sip terminal;
Described channel management module is used to carry out the IMS conference medium resource management, and the XMPP whiteboard session passage between foundation and deletion and the described sip terminal, also is used for the state of XMPP whiteboard session passage is managed.
Share information management module, be used for the blank control information operation that buffer memory receives, and identify query caching, and obtain complete blank page or leaf or primitive information to described sip terminal according to blank page or leaf that receives or pel.
Described sip terminal comprises transceiver module and the blank that is connected with transceiver module operation control module and passage are set up module, wherein,
Transceiver module, be used to receive and dispatch and described AS between the SIP signaling, and send and receive the blank control information operation that described MRS sends to described MRS by XMPP whiteboard session passage;
Blank operation control module is used for blank is operated or controlled, and generates the blank control information operation; Also be used for the blank control information operation that buffer memory receives or creates, and when creating blank page or leaf or pel, generate unique blank page or leaf sign of the overall situation or pel sign, and in the described control information operation that sends, carry described blank page or leaf sign or pel sign; When sending certain blank page or leaf or net element information, secondary only sends the blank page or leaf sign or the network element ID of described blank page or leaf or network element; And search buffer memory according to the blank page or leaf in the control information operation that receives sign or network element ID, if do not find, also be used to ask described MRS to send complete blank page or leaf or net element information.
The operation of blank is included in current blank page or leaf to be increased, revises or the deletion pel, and the control of blank is comprised establishment, opens, deletes blank page or leaf or page turning.
Whiteboard session of the present invention realizes that system and method realized sharing of data in the whiteboard session by the XMPP whiteboard session passage of setting up, realized holding under the IMS architecture environment function of whiteboard session, and blank modification synchronously, page turning, mark, operating right control flexibly.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1, a kind of realizing electronic whiteboard conference system based on IP multimedia system framework is characterized in that, this system comprises application server AS, Media Resource Server MRS and at least two the Session initiation Protocol sip terminals that link to each other by communication network, wherein,
Described AS is used for by the SIP signaling described sip terminal and described MRS being carried out whiteboard session control, comprises the foundation that the establishment of controlling whiteboard session and scalable message are handled on-the-spot agreement XMPP whiteboard session passage;
Described MRS, be used to set up and described sip terminal between XMPP whiteboard session passage, and receive and transmit blank control information operation between the sip terminal by described XMPP whiteboard session passage, realize the blank information sharing between the described sip terminal;
Described sip terminal is used for XMPP whiteboard session passage between foundation and the described MRS, and carries out blank operation or control, and sends or receive the blank control information operation by described XMPP whiteboard session passage.
2, realization as claimed in claim 1 system, it is characterized in that: when described sip terminal is created blank page or leaf or pel, also be used to generate unique blank page or leaf sign of the overall situation or pel sign, described sip terminal and described MRS also are used for blank page or leaf or the primitive information that buffer memory is created or received, described sip terminal or described MRS adopt described blank page or leaf or pel sign when secondary sends blank control information operation about described blank page or leaf or primitive information, and are identified at the complete information of searching described blank page or leaf or pel in the buffer memory according to described blank page or leaf or pel.
3, system as claimed in claim 2, it is characterized in that: described sip terminal and described MRS adopt identical page replacement algorithm and caching page number to carry out buffer memory, and described page replacement algorithm is random algorithm, fifo algorithm, recent minimum use algorithm, did not use algorithm or least often use algorithm or the page fault frequency method at most.
4, the system as claimed in claim 1, it is characterized in that: described AS also is used for controlling the authority of described sip terminal and the state of passage thereof by the SIP signaling, the authority of described sip terminal is message pick-up power, blank operation power or blank control, corresponding channel status is unidirectional receiving media stream mode or bidirectional transmit-receive Media Stream state, and blank operation power refers to current blank page or leaf is increased, revises and deletes the right of pel operation; The blank control comprises blank operation power and creates, opens, deletes the right of blank page or leaf and page turning.
5, a kind ofly realize it is characterized in that the method for electronic whiteboard conference based on IP multimedia system framework, the application server AS that this method links to each other by communication network, Media Resource Server MRS, and at least one sip terminal realize, comprising:
Described AS utilizes Session initiation Protocol and described sip terminal and described MRS to carry out Signalling exchange and creates whiteboard session, and control sip terminal and MRS set up the XMPP whiteboard session passage between described sip terminal and the described MRS;
The sip terminal that has blank operation or control carries out blank operation or control and generating run control information;
The described sip terminal that has blank operation or a control sends to described MRS with the XMPP whiteboard session passage of described control information operation by correspondence;
Described MRS receives and is transmitted to other SIM terminals by the XMPP whiteboard session passage of correspondence.
6, method as claimed in claim 5, it is characterized in that: when described sip terminal is created blank page or leaf or pel, generate unique blank page or leaf sign of the overall situation or pel sign, described sip terminal and described MRS carry out buffer memory to blank page or leaf or the primitive information created or receive, if described sip terminal or described MRS secondary send the blank control information operation about described blank page or leaf or primitive information, then adopt described blank page or leaf or pel sign, and be identified at the complete information of searching described blank page or leaf or pel in the buffer memory according to the described blank page or leaf or the pel that receive.
7, method as claimed in claim 5 is characterized in that: described blank operation power refers to current blank page or leaf is increased, revises and deletes the right of pel operation; Described blank control comprises blank operation power and creates, opens, deletes the right of blank page or leaf and page turning that the blank operation or the control of described sip terminal are controlled by the SIP signaling by described AS.
8, a kind of method that realizes electronic whiteboard conference based on IP multimedia system framework, it is characterized in that: this method realizes that based on the application server AS that links to each other by communication network, Media Resource Server MRS, SIP host terminal and at least one SIP participant terminal the flow process that whiteboard session is created comprises:
Described SIP host terminal sends the whiteboard session request to create to described AS;
Described AS creates whiteboard session, and transmits described request to described MRS;
Set up the XMPP whiteboard session passage of described SIP host terminal, comprising: described AS is that described SIP host terminal is to described MRS application IMS conference medium passage; Described MRS prepares the media channel resource, and notifies described SIP host terminal by described AS; Set up described XMPP whiteboard session passage between described SIP host terminal and the described MRS;
Set up the XMPP whiteboard session passage of described at least one SIP participant terminal, comprising: described AS utilizes virtual media information to be SIP participant terminal to apply IMS conference medium passage; Described MRS prepares the media channel resource, and notifies described SIP participant terminal by described AS; Described SIP participant terminal is notified described MRS with real media information by described AS; Set up described XMPP whiteboard session passage between described SIP participant terminal and the described MRS.
9, method as claimed in claim 8 is characterized in that: the blank operation control flow of described whiteboard session comprises:
Described SIP host terminal or participant's terminal are carried out blank operation or control and generating run control information, described blank operation refers to increase on current blank page or leaf, the right of revising or deleting pel, and described blank control refers to create, opens, deletes blank page or leaf or page turning;
Described SIP host terminal or participant's terminal by the XMPP whiteboard session passage between itself and the MRS to described MRS transmit operation control information;
Described MRS receives described control information operation, and transmits described control information operation by the XMPP whiteboard session passage between itself and other participant's terminal to other participant's terminals;
Described other participant's terminals receive described control information operation.
10, method as claimed in claim 9, it is characterized in that: described blank page or leaf or pel generate unique blank page or leaf sign of the overall situation or pel sign, blank page or leaf that described SIP host terminal, described SIP participant terminal and described MRS buffer memory are created or received or net element information and blank page or leaf sign or pel sign by described SIP host terminal or participant's terminal when creating; Described SIP host terminal, when described SIP participant terminal and described MRS send described blank page or leaf or primitive information first, in described control information operation, comprise described blank page or leaf or primitive information and blank page or leaf sign or pel sign, when secondary sends, in described control information operation, carry the blank page or leaf sign or the network element ID of described blank page or leaf or network element, described SIP host terminal, described SIP participant terminal and described MRS search buffer memory according to described blank page or leaf sign or network element ID, if do not find, then ask described SIP host terminal, described SIP participant terminal and described MRS send complete blank page or leaf or net element information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910142311.0A CN101567798A (en) | 2009-05-27 | 2009-05-27 | System and method for realizing electronic whiteboard conference based on IP multimedia system configuration |
| PCT/CN2009/073702 WO2010135876A1 (en) | 2009-05-27 | 2009-09-02 | System and method for implementing electronic whiteboard conference based on ip multimedia subsystem architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910142311.0A CN101567798A (en) | 2009-05-27 | 2009-05-27 | System and method for realizing electronic whiteboard conference based on IP multimedia system configuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101567798A true CN101567798A (en) | 2009-10-28 |
Family
ID=41283761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910142311.0A Pending CN101567798A (en) | 2009-05-27 | 2009-05-27 | System and method for realizing electronic whiteboard conference based on IP multimedia system configuration |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101567798A (en) |
| WO (1) | WO2010135876A1 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110061005A1 (en) * | 2008-05-14 | 2011-03-10 | Huawei Technologies Co., Ltd. | Method, device, and system for implementing electronic whiteboard in audio/video conference |
| CN102035835A (en) * | 2010-12-13 | 2011-04-27 | 山东科技大学 | Interactive electronic whiteboard system based on cooperative work |
| WO2011140750A1 (en) * | 2010-05-12 | 2011-11-17 | 中兴通讯股份有限公司 | Method and device for implementing file sharing |
| CN102413128A (en) * | 2011-11-10 | 2012-04-11 | 青岛海信移动通信技术股份有限公司 | Method for sharing electronic whiteboard and network conference system |
| CN102801708A (en) * | 2012-06-28 | 2012-11-28 | 大唐移动通信设备有限公司 | Electronic white board realization method and user equipment |
| CN103532829A (en) * | 2013-09-03 | 2014-01-22 | 国家电网公司 | Instant messaging system electronic white board access method based on XMPP (xml based messaging and presence protocol) |
| CN103532828A (en) * | 2013-09-03 | 2014-01-22 | 国家电网公司 | Rich text format realization system and method based on expanded XMPP (xml based messaging and presence protocol) |
| WO2014047935A1 (en) * | 2012-09-29 | 2014-04-03 | 华为技术有限公司 | Method for implementing multimedia conference, related device and system |
| CN103997486A (en) * | 2014-04-30 | 2014-08-20 | 广州视睿电子科技有限公司 | Interaction method and system for white boards of different operating system platforms |
| CN104106037A (en) * | 2012-02-13 | 2014-10-15 | 日立麦克赛尔株式会社 | Projector, graphical input/display device, portable terminal and program |
| CN104133873A (en) * | 2014-07-23 | 2014-11-05 | 华为技术有限公司 | Terminal device, communication system and data processing method of communication system |
| CN104635989A (en) * | 2015-02-13 | 2015-05-20 | 无锡市崇安区科技创业服务中心 | Pressure trail processing method based on point-to-point two-way transmission meeting writing board |
| WO2015123977A1 (en) * | 2014-02-21 | 2015-08-27 | 中兴通讯股份有限公司 | Video conference-based electronic whiteboard interaction method and terminal |
| CN105138299A (en) * | 2015-08-17 | 2015-12-09 | 北京京东尚科信息技术有限公司 | Safe information sharing |
| CN106462679A (en) * | 2014-05-14 | 2017-02-22 | 微软技术许可有限责任公司 | Claiming data from a virtual whiteboard |
| CN108718243A (en) * | 2014-03-05 | 2018-10-30 | 华为技术有限公司 | A kind of group technology of user terminal, Conference server, conference system |
| US10270819B2 (en) | 2014-05-14 | 2019-04-23 | Microsoft Technology Licensing, Llc | System and method providing collaborative interaction |
| WO2019237675A1 (en) * | 2018-06-12 | 2019-12-19 | 广州视源电子科技股份有限公司 | Whiteboard content displaying method and device, whiteboard device, and server |
| CN111107065A (en) * | 2019-12-05 | 2020-05-05 | 视联动力信息技术股份有限公司 | Method, device, equipment and storage medium for electronic whiteboard authority management |
| CN112711374A (en) * | 2020-12-31 | 2021-04-27 | 安徽听见科技有限公司 | Multi-terminal cooperation method, device and equipment based on conference whiteboard application |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114765603A (en) * | 2020-12-31 | 2022-07-19 | 中兴通讯股份有限公司 | Screen sharing method of mobile terminal, mobile terminal and storage medium |
| CN113434187B (en) * | 2021-06-18 | 2022-10-28 | 聚好看科技股份有限公司 | Server and whiteboard version compatible method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102211B (en) * | 2007-07-09 | 2010-07-14 | 中兴通讯股份有限公司 | A method for sharing the document in data conference and its system |
| CN101286865B (en) * | 2008-05-14 | 2010-11-10 | 华为技术有限公司 | Electronic white board realizing method, device and system in audio and video meeting |
-
2009
- 2009-05-27 CN CN200910142311.0A patent/CN101567798A/en active Pending
- 2009-09-02 WO PCT/CN2009/073702 patent/WO2010135876A1/en active Application Filing
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110061005A1 (en) * | 2008-05-14 | 2011-03-10 | Huawei Technologies Co., Ltd. | Method, device, and system for implementing electronic whiteboard in audio/video conference |
| WO2011140750A1 (en) * | 2010-05-12 | 2011-11-17 | 中兴通讯股份有限公司 | Method and device for implementing file sharing |
| CN102035835A (en) * | 2010-12-13 | 2011-04-27 | 山东科技大学 | Interactive electronic whiteboard system based on cooperative work |
| CN102413128A (en) * | 2011-11-10 | 2012-04-11 | 青岛海信移动通信技术股份有限公司 | Method for sharing electronic whiteboard and network conference system |
| CN104106037A (en) * | 2012-02-13 | 2014-10-15 | 日立麦克赛尔株式会社 | Projector, graphical input/display device, portable terminal and program |
| CN104106037B (en) * | 2012-02-13 | 2017-10-03 | 日立麦克赛尔株式会社 | Projecting apparatus, figure input and display device, portable terminal device and program |
| CN102801708A (en) * | 2012-06-28 | 2012-11-28 | 大唐移动通信设备有限公司 | Electronic white board realization method and user equipment |
| CN102801708B (en) * | 2012-06-28 | 2016-08-10 | 大唐移动通信设备有限公司 | Electronic white board realization method and subscriber equipment |
| WO2014047935A1 (en) * | 2012-09-29 | 2014-04-03 | 华为技术有限公司 | Method for implementing multimedia conference, related device and system |
| CN103532829A (en) * | 2013-09-03 | 2014-01-22 | 国家电网公司 | Instant messaging system electronic white board access method based on XMPP (xml based messaging and presence protocol) |
| CN103532828A (en) * | 2013-09-03 | 2014-01-22 | 国家电网公司 | Rich text format realization system and method based on expanded XMPP (xml based messaging and presence protocol) |
| CN103532828B (en) * | 2013-09-03 | 2017-07-07 | 国家电网公司 | A kind of rich text format of the XMPP based on extension realizes system and method |
| WO2015123977A1 (en) * | 2014-02-21 | 2015-08-27 | 中兴通讯股份有限公司 | Video conference-based electronic whiteboard interaction method and terminal |
| US11290539B2 (en) | 2014-03-05 | 2022-03-29 | Huawei Technologies Co., Ltd. | User terminal grouping method, conference server, and conference system |
| CN108718243B (en) * | 2014-03-05 | 2021-08-31 | 华为技术有限公司 | User terminal grouping method, conference server and conference system |
| CN108718243A (en) * | 2014-03-05 | 2018-10-30 | 华为技术有限公司 | A kind of group technology of user terminal, Conference server, conference system |
| CN103997486A (en) * | 2014-04-30 | 2014-08-20 | 广州视睿电子科技有限公司 | Interaction method and system for white boards of different operating system platforms |
| CN103997486B (en) * | 2014-04-30 | 2017-08-11 | 广州视睿电子科技有限公司 | Interaction method and system for white boards of different operating system platforms |
| US10270819B2 (en) | 2014-05-14 | 2019-04-23 | Microsoft Technology Licensing, Llc | System and method providing collaborative interaction |
| CN106462679A (en) * | 2014-05-14 | 2017-02-22 | 微软技术许可有限责任公司 | Claiming data from a virtual whiteboard |
| CN106462679B (en) * | 2014-05-14 | 2019-08-27 | 微软技术许可有限责任公司 | Data are advocated from virtual whiteboard |
| CN104133873A (en) * | 2014-07-23 | 2014-11-05 | 华为技术有限公司 | Terminal device, communication system and data processing method of communication system |
| CN104635989A (en) * | 2015-02-13 | 2015-05-20 | 无锡市崇安区科技创业服务中心 | Pressure trail processing method based on point-to-point two-way transmission meeting writing board |
| CN105138299B (en) * | 2015-08-17 | 2018-05-15 | 北京京东尚科信息技术有限公司 | Information dispensing method, reading method and content source, electronic equipment |
| CN105138299A (en) * | 2015-08-17 | 2015-12-09 | 北京京东尚科信息技术有限公司 | Safe information sharing |
| WO2019237675A1 (en) * | 2018-06-12 | 2019-12-19 | 广州视源电子科技股份有限公司 | Whiteboard content displaying method and device, whiteboard device, and server |
| CN111107065A (en) * | 2019-12-05 | 2020-05-05 | 视联动力信息技术股份有限公司 | Method, device, equipment and storage medium for electronic whiteboard authority management |
| CN112711374A (en) * | 2020-12-31 | 2021-04-27 | 安徽听见科技有限公司 | Multi-terminal cooperation method, device and equipment based on conference whiteboard application |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010135876A1 (en) | 2010-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101567798A (en) | System and method for realizing electronic whiteboard conference based on IP multimedia system configuration | |
| CN101102211B (en) | A method for sharing the document in data conference and its system | |
| CN102388632B (en) | Application message method for pushing, system and network element | |
| KR101457217B1 (en) | System and method for session transfer between multi-clients | |
| CN101232413B (en) | Server, system and method for transferring conversation control power | |
| US8144185B2 (en) | Communication control method, computer system, conference management server, communication method and portable terminal | |
| CN101056320B (en) | A file transfer method and its system in the data meeting | |
| CN102150443A (en) | System and methods for communication between instant message users and short message service users | |
| CN105531979B (en) | It is a kind of for exchanging the method and server of data between a client and a server | |
| CN101647255A (en) | Method and apparatus for management of an application ensemble | |
| CN104753877A (en) | Group communication method and device | |
| CN105141971A (en) | Method and system for realizing live broadcast based on session initialization protocol | |
| CN104125145A (en) | Web browser based communication method, web browser based communication equipment and web browser based communication system | |
| CN101834730A (en) | Multimedia conferencing control method and system | |
| CN101599921B (en) | Enterprise instant communication system and file transfer method thereof | |
| CN102223293A (en) | Routing method of information requests and processing system | |
| CN104580247A (en) | Information synchronization method and information synchronization device based on IMS multi-party calls | |
| CN101404628A (en) | System and method for increasing non-friend communication mode in instant communication | |
| CN101277478A (en) | Method and system for playing advertise during group conversation | |
| US9473430B2 (en) | Method and system for group number-based microblog aggregation | |
| CN110971873B (en) | Real-time monitoring method, monitoring system and storage medium | |
| CN100542098C (en) | A kind of method and system that present User Status and information | |
| CN101047691B (en) | Method for integral controlling subscribe | |
| KR101268895B1 (en) | Method and apparatus for controlling presence information of the user terminal in communication network | |
| CN105282115A (en) | Method and device for realization of RCS (Rich Communication Suite) system communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091028 |