CN101083752A - Method for displaying meeting place name of video conference and video terminal - Google Patents
Method for displaying meeting place name of video conference and video terminal Download PDFInfo
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Abstract
This invention composes and displays the name of the remote meeting house at the viewer local place to prevent the name from displaying blurry due to losing packages during data transferring.
Description
Technical field
The present invention relates to the multi-media communication technical field, the display packing and the video terminal of meeting place name in particularly a kind of video conference.
Background technology
Along with the internet popularize and based on the continuous development of TCP/IP network technology, video conference becomes a kind of common exchange way gradually.Video conferencing system realizes virtual meeting by the network communications technology, and the user who disperses on the geography is accumulated in a place, by multiple mode exchange of information such as image, sound, carries out collaborative work.Space length has been shortened in video conference to the full extent, has made things convenient between the cooperation member in real time, has exchanged intuitively.
In video conference, the Conference Room that participates in video conference is called as the meeting-place.As a rule, a meeting-place has only a video terminal, the corresponding meeting-place of video terminal.Please refer to Fig. 1, the networking schematic diagram for video network generally includes a plurality of video terminals in the video network, corresponding respectively meeting-place separately.In the video conference, each video terminal is gathered the picture and the voice data in this meeting-place, is transferred to multipoint control unit (MCU, Multipoint Control Unit) through after the encoding compression; MCU reintegrates and allocates above-mentioned data, according to conference creation person's demand the multichannel audio-video frequency data flow is integrated into an audio/video flow, is issued to each video terminal.Under the more situation in meeting-place,, need realize effectively sign to different meeting-place in order clearly to distinguish other each meeting-place in all participant meeting-place.The meeting-place label manner; the mode of the easiest understanding and acceptance is exactly to set different meeting place names for each meeting-place; for example according to the geographical position called after " meeting-place, Beijing " in meeting-place, " meeting-place, Shanghai " etc., and in video conference, show the meeting place name in the meeting-place of watching.
How in video conference, to show meeting place name, one of implementation method of prior art is at the synthetic meeting place name of MCU side, specifically comprise: MCU sets meeting place name to the video terminal that all need add video conference, convenes all video terminals to add video conference then; In the video conference, MCU can receive the image that all terminals send, and broadcast/watch requirement according to meeting-place at that time, the video data that viewed meeting-place sends over is decoded, generate the meeting field picture, on the meeting field picture, be superposed to the meeting place name that this meeting-place is set then, synthetic piece image; Again synthetic image is carried out compressed encoding, and send the video terminal place that to watch to, thereby after the video terminal of watching is decoded to data, can obtain to include the video image of meeting place name.With Fig. 1 is example, the image in the meeting-place of video terminal A is wanted to watch in the meeting-place of supposing video terminal C, then gather its meeting field picture and encode and be sent to MCU by video terminal A, the image data decoding of MCU to receiving, behind the meeting place name of synthetic video terminal A on the meeting field picture that decoding obtains, meeting field picture after synthetic is encoded once more, send to video terminal C then, the video data that video terminal C receives by decoding can obtain comprising the meeting field picture of meeting place name.The shortcoming of said method is:
1, because meeting place name is to be incorporated into (the earlier synthetic meeting place name in MCU place, coding sends again) before the transmission code stream, so meeting place name is the part of meeting field picture.Because video conference requires very high (requiring packet loss usually less than one thousandth) to network quality, when there is a small amount of packet loss in network, mosaic just inevitably appears in image, cause meeting place name fuzzy even be beyond recognition easily, thereby meeting place name can't play the effect in due sign meeting-place.
2, because meeting place name is to set before forwarding, in meeting, can not change, may take place in actual applications that meeting place name can not clearly show or the situation of the effective image of meeting place name shield portions, for example, when the background color of shown meeting place name participant field picture was close or identical, it was unclear to cause meeting place name to show easily.
3, because MCU need can field picture carry out encoding and decoding to a plurality of, the system resource that this must take more MCU influence count image effect with video conference of participant terminal that MCU calls a meeting.
Two of the implementation method of prior art is in viewed meeting-place side, promptly at the synthetic meeting place name of the video terminal side of encoding, specifically comprise: video terminal is provided with local meeting place name separately, before carrying out local image encoding, the meeting-place title is superimposed upon on the image frame of camera acquisition, a synthetic sub-picture, then synthetic image is carried out compressed encoding, be resent to the video terminal place of watching, show the meeting field picture that comprises meeting place name in the decoding back of watching, video terminal place.For example, among Fig. 1, video terminal A sets local meeting place name and is " meeting-place A "; After MCU called a meeting, video terminal A this meeting place name that superposes on the meeting field picture that it is gathered carried out compressed encoding to the meeting field picture again and transmits.Like this, when video terminal C watches the image of video terminal A, just comprised the meeting place name of " meeting-place A " in the image.Obviously, this method has in the method for being similar to one 1 and 2 shortcoming.Simultaneously, this method requires each video terminal place that the meeting place name of self is set voluntarily, because the meeting place name that each video terminal is provided with may be that the set meeting place name of each video terminal is inconsistent with the MCU place in advance, thereby causes the problem of site management confusion easily.
Summary of the invention
Technical problem to be solved by this invention provides a kind of display packing and video terminal of meeting place name, is used for clearly showing meeting place name.
For solving the problems of the technologies described above, it is as follows to the invention provides scheme:
The display packing of meeting place name in a kind of video conference is characterized in that may further comprise the steps:
Steps A, the terminal labels of participant video terminal and the related information between the terminal name are set up and safeguarded to video terminal;
Step B, video terminal obtain the terminal name of this remote site correspondence according to the terminal labels and the described related information of remote site, generate and preserve the remote site title figure layer of the terminal name that comprises described correspondence;
Step C, video terminal is with on the stacked meeting field picture that is added in described remote site of described remote site title figure and export display device to.
Method of the present invention wherein, further comprises before the described steps A:
MCU is provided with terminal labels and terminal name for each video terminal of all participants in advance, and the terminal labels and the terminal name information of all participant video terminals is sent to each video terminal;
In the described steps A, described related information is set up and safeguarded to the terminal labels and the terminal name information of the video terminal that video terminal further sends according to MCU.
Method of the present invention, wherein, described steps A further comprises:
When new video terminal added video conference, each video terminal upgraded described related information according to the terminal labels and the terminal name of the video terminal of current all participants in the video conference;
When video terminal left video conference, each video terminal was deleted the related information of the described video terminal that leaves in the video conference from described related information.
Method of the present invention, wherein, among the described step B, described video terminal further generates described remote site title figure layer according to the configuration parameter of meeting place name, described configuration parameter comprises color, the size of meeting place name, and the display position of meeting place name.
Method of the present invention, wherein, after the configuration parameter of described meeting place name upgraded, among the described step B, described video terminal further generated and preserves new remote site title figure layer according to the configuration parameter after upgrading;
Among the described step C, video terminal further is added on the remote site image and exports display device to described new remote site title figure is stacked.
Method of the present invention, wherein, described step C specifically comprises:
The video data decoding of the described remote site that video terminal will receive obtains the meeting field picture of remote site;
On the stacked meeting field picture that is added in described remote site of remote site title figure, and export display device to.
A kind of video terminal comprises:
The related information maintenance unit is used to set up and safeguard the terminal labels of participant video terminal and the related information between the terminal name;
Remote site title figure layer generation unit, be used for the related information safeguarded according to the terminal labels and the described related information maintenance unit of remote site, obtain the terminal name of this remote site correspondence, generate and preserve the remote site title figure layer of the terminal name that comprises described correspondence;
The meeting place name superpositing unit is used for that remote site title figure that described remote site title figure layer generation unit preserved is stacked to be added on the remote site image and to export display device to.
Video terminal of the present invention, wherein, described related information maintenance unit is further used for terminal labels and terminal name information according to the video terminal of MCU transmission, sets up and safeguard described related information.
Video terminal of the present invention, wherein, described related information maintenance unit is further used for when new video terminal adds video conference, upgrades described related information according to the terminal labels and the terminal name of the video terminal of current all participants; And when video terminal leaves video conference, the related information of the described video terminal that leaves of deletion from described related information.
Video terminal of the present invention wherein also comprises the user control interface unit,
Described user control interface unit is used to dispose and preserve the configuration parameter of meeting place name;
Described remote site title figure layer generation unit further generates described remote site title figure layer according to the configuration parameter that described user control interface unit is preserved.
Video terminal of the present invention, wherein, described meeting place name superpositing unit is further used for receiving the video data and the decoding of remote site, obtains the meeting field picture of remote site; On the stacked meeting field picture that is added in described remote site of remote site title figure, and export display device to.
From the above as can be seen, the display packing of meeting place name provided by the invention and video terminal, local the beholder for can field picture synthesizing meeting place name, thereby avoided the fuzzy problem of the meeting place name that packet loss caused in the data transmission procedure, title that still can clear demonstration remote site under the not good situation of network packet loss rate height, picture quality, help distinguishing the problem meeting-place, orientation problem.Simultaneously, the user can the demonstration to meeting place name be configured and control at the video terminal place among the present invention, has improved the flexibility that meeting place name shows; Meeting place name is by the MCU unified management among the present invention, thereby guarantees that all terminal display result are consistent with the MCU side, helps the management of meeting place name; And because meeting place name is to handle in beholder this locality, MCU need not to handle for synthetic meeting place name carries out extra encoding and decoding again, thereby the system resource of having saved MCU.
Description of drawings
Fig. 1 is the networking schematic diagram of the video network of prior art;
Fig. 2 holds for video conference and the schematic flow sheet of image source when switching;
Fig. 3 is the flow chart of the display packing of the described meeting place name of the embodiment of the invention;
Fig. 4 is the structural representation of the described video terminal of the embodiment of the invention.
Embodiment
The invention provides the display packing of meeting place name in a kind of video conference, by the video terminal of beholder this locality, promptly decoding terminal synthesizes meeting place name, thereby has avoided the caused meeting place name of the packet loss in the data transmission procedure to show fuzzy problem.The present invention is described in detail by specific embodiment below in conjunction with accompanying drawing.
Flow process when for a better understanding of the present invention, at first introducing the medium control protocol and switch with image source about holding of video conference in H.245.Suppose that in the video network of being made up of video terminal A, B, C and MCU video terminal C is the chairman, the meeting-place of video terminal A is meeting-place viewed or that be broadcasted, video conference is held and the flow process of image source when switching as shown in Figure 2:
Step 201 during all video terminal affiliation, sends requestAllTerminalIDs message to MCU respectively, is used for asking to MCU the information in all participant meeting-place.
Step 202, after MCU receives above-mentioned request, send requestAllTerminalIDsResponse message to each video terminal, the terminal labels TerminalLabel and the terminal name TerminalID that comprise all online meeting-place in this message are used for feeding back the information in all participant meeting-place to the video terminal that sends request.
Here, TerminalLabel and TerminalID are that MCU is in advance for participating in the set terminal labels and the terminal name of each video terminal of video conference.Wherein terminal labels TerminalLabel is used for the structure at video conference sign video terminal, is usually expressed as the several to form of [MCU, Terminal], as [0,1], [0,2] etc.; Terminal name TerminalID is used for describing in video conference the meeting place name of video terminal, supposes the meeting place name of video terminal A, B, C here, and promptly TerminalID is respectively " meeting-place A ", " meeting-place B " and " meeting-place C ".
Step 203, when video terminal B need watch the meeting field picture of video terminal A, video terminal B sent the request message of sendThisSource to MCU, and carried the terminal labels TerminalLabel of video terminal A in this request message.
Step 204 if MCU accepts the request of video terminal B, is then returned acknowledge message grantedSendThisSource to video terminal B, is used to respond sendThisSource message.
Step 205, MCU sends terminalYouAreSeeing message to video terminal B, comprises the TerminalLabel of video terminal A in the message, is used to the meeting-place of informing which video terminal present its image watched of video terminal B is.
In the video conference process, when requiring the meeting field picture of broadcast video terminal A in meeting, then may further comprise the steps as chairman's video terminal C:
Step 301, video terminal C will send makeTerminalBroadcaster message to MCU, comprise the TerminalLabel of the video terminal A that is broadcasted in this message, be used for to MCU request the meeting-place of video terminal A as broadcast site.
Here, if when MCU end control meeting, the broadcast site function does not need video terminal to participate in, and behind the enterprising line operate in the control interface of MCU side, directly carries out following step 207 usually.
Step 302 after MCU receives makeTerminalBroadcaster message, sends terminalYouAreSeeing message to all participant terminals, comprises the TerminalLabel of the video terminal A that is broadcasted in this message.
From above-mentioned flow process as can be seen, MCU is provided with terminal labels TerminalLabel and terminal name TerminalID for all participant video terminals in advance.The present invention obtains terminal labels and the name information that MCU sets in advance by video terminal just, and in beholder this locality, it is the synthetic meeting place name in decoding terminal place, can show meeting place name in the field picture thereby be implemented in, the display packing of the described meeting place name of the embodiment of the invention, as shown in Figure 3, may further comprise the steps:
Step 31, the terminal labels TerminalLabel of participant video terminal and the related information between the terminal name TerminalID are set up and safeguarded to video terminal.
Here, video terminal can be according to the requestAllTerminalIDsResponse message of MCU transmission, obtain the terminal labels TerminalLabel and the terminal name TerminalID information of the video terminal in all participant meeting-place that comprise in this message, thereby set up the related information between terminal labels and the terminal name.Be example still with the video network among Fig. 2, video terminal A, B, C set up and safeguard described related information respectively according to terminal labels and terminal name information that MCU sends, for example set up TerminalLabel and TerminalID corresponding lists: { ([0,1], " meeting-place A "), ([0,2], " meeting-place B "), ([0,3], " meeting-place C ") }.
Because in the process of video conference, the video terminal that new video terminal may add meeting and participant may leave meeting, video terminal can correspondingly be safeguarded described related information according to above-mentioned situation among the present invention:
When new video terminal adds meeting, MCU will send terminalJoinedConference message to all participant terminals, this moment, all participant terminals all can send requestAllTerminalIDs message to MCU, be used to ask current participant terminal information, MCU then sends to each video terminal with the information in current all participant meeting-place by requestAllTerminalIDsResponse message.Therefore, each video terminal upgrades described related information according to current all the participant terminal information that comprise in this message after receiving requestAllTerminalIDsResponse message;
When the video terminal of participant left video conference, MCU sent terminalLeftConference message to current all participant terminals, carries the TerminalLabel of defection terminal in this message.Among the present invention, each video terminal is deleted described defection terminal information, the information of promptly deleting the TerminalLabel and the TerminalID of this defection terminal from described related information after receiving this message.
Step 32, the terminal name TerminalID that video terminal obtains this remote site correspondence according to the terminal labels TerminalLabel and the described related information of its remote site of watching generates and preserves the remote site title figure layer of the terminal name that comprises described correspondence.
In the video conference, when the remote site image source of watching when a certain meeting-place changes (no matter being to receive broadcast image or watch a certain meeting field picture), MCU can send terminalYouAreSeeing message to the video terminal in this meeting-place, described video terminal can parse the terminal labels TerminalLabel of the remote site that will watch from this message, and then according to its related information of safeguarding, obtain the terminal name TerminalID of this terminal labels correspondence, i.e. the remote site title.Still continue the example among Fig. 2, when video terminal B wants to watch the image of meeting-place A, MCU will send terminalYouAreSeeing message to video terminal B, video terminal parses video terminal A from this message terminal labels TerminalLabel is [0,1], and further the meeting place name that obtains video terminal A according to its described related information of safeguarding is " meeting-place A ".
Described video terminal can generate and preserve remote site title figure layer according to the configuration parameter of meeting place name behind the meeting place name that obtains the remote site that will watch.Here, described configuration parameter comprises: the font size of meeting place name, color, and the parameters such as display position of meeting place name in image.And above-mentioned configuration parameter can be configured in real time by the user control interface at the video terminal place, thereby makes the user can make corresponding change to meeting place name as required in video conference, improves the flexibility that meeting place name shows.For example, the color matching of the dot matrix of the meeting place name in the last example " meeting-place A " for red, is scaled the medium size size, move to image in go up the position, form remote site title figure layer, and be saved in remote site title figure layer buffer area.
Step 33, video terminal is with on the stacked meeting field picture that is added in described remote site of described remote site title figure and export display device to.
Receive the video data stream of the remote site that sends from MCU when video terminal, be the remote site image then with this video data decoding, and be added on this remote site image described remote site title figure is stacked, output to display device, thereby show the remote site image that comprises meeting place name.Because meeting place name adds in beholder this locality, thereby fundamentally eliminated in the prior art because the meeting place name that data-bag lost causes shows fuzzy phenomenon.
In video conference, the user can also be configured meeting place name by user control interface according to current display requirement.For example, select whether need to show meeting place name (whether need to superpose remote site title figure layer), when not needing to show meeting place name, video terminal directly exports the remote site image to display device; When needs show meeting place name, be added in the remote site image and export display device to described remote site title figure is stacked; And the configuration parameter such as color, size, display position that reconfigures meeting place name makes it to meet display requirement.After above-mentioned configuration was finished, video terminal upgraded described remote site title figure layer according to the configuration parameter of new configuration, thereby the display effect of meeting place name is adjusted.Like this, in conference process, the user can adjust meeting place name flexibly, has improved the control ability that the user shows meeting place name.
From the above as can be seen, the method of the described demonstration meeting place name of the embodiment of the invention, by local for can field picture synthesizing meeting place name the beholder, thereby avoided the fuzzy phenomenon of meeting place name that the packet loss in the transfer of data causes, title that still can clear demonstration remote site under the not good situation of network packet loss rate height, picture quality.
Based on the method for above-mentioned demonstration meeting place name, the present invention also provides a kind of video terminal, and as shown in Figure 4, this video terminal 400 comprises related information maintenance unit 41, remote site title generation unit 42, and meeting place name superpositing unit 43, wherein,
Described related information maintenance unit 41 is used to set up and safeguard the terminal labels TerminalLabel of participant video terminal and the related information between the terminal name TerminalID.Here, described related information maintenance unit 41 also is further used for terminal labels and terminal name information according to all video terminals of MCU transmission, sets up and safeguard described related information.When new video terminal added video conference, described related information maintenance unit 41 upgraded described related information according to the terminal labels and the terminal name of the video terminal of current all participants; And when video terminal left video conference, described related information maintenance unit 41 was deleted the related information of the described video terminal that leaves from described related information.
Described remote site title figure layer generation unit 42, be used for the related information safeguarded according to the terminal labels TerminalLabel and the described related information maintenance unit 41 of remote site, obtain the terminal name TerminalID of this remote site correspondence, generate and preserve the remote site title figure layer that comprises described terminal name.
Described meeting place name superpositing unit 43 is used for that remote site title figure that described remote site title figure layer generation unit 42 preserved is stacked to be added on the remote site image and to export display device to.Here, described meeting place name superpositing unit 43 by video data and the decoding that receives remote site, obtains the meeting field picture of remote site; On the stacked meeting field picture that is added in described remote site of remote site title figure, and export display device to.
Here, described video terminal 400 can further include user control interface unit 44, is used to dispose and preserve the configuration parameter of meeting place name.Described configuration parameter comprises color, the size of meeting place name, and the display position of meeting place name.The configuration parameter of the meeting place name that described remote site title figure layer generation unit 42 further preserved according to described user control interface unit 44 generates described remote site title figure layer.
In sum, the display packing of meeting place name of the present invention and video terminal, by the meeting place name figure layer at the local generation of beholder remote site, and back output shows on the remote site image that is added to, thereby has avoided factor to show the problem of bluring according to the meeting place name that packet loss causes.
The display packing of meeting place name of the present invention and video terminal, be not restricted to listed utilization in specification and the execution mode, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the present invention is not limited to specific details, representational equipment and illustrates here and describe
Claims (11)
1. the display packing of meeting place name in the video conference is characterized in that may further comprise the steps:
Steps A, the terminal labels of participant video terminal and the related information between the terminal name are set up and safeguarded to video terminal;
Step B, video terminal obtain the terminal name of this remote site correspondence according to the terminal labels and the described related information of remote site, generate and preserve the remote site title figure layer of the terminal name that comprises described correspondence;
Step C, video terminal is with on the stacked meeting field picture that is added in described remote site of described remote site title figure and export display device to.
2. the method for claim 1 is characterized in that, further comprises before the described steps A:
MCU is provided with terminal labels and terminal name for each video terminal of all participants in advance, and the terminal labels and the terminal name information of all participant video terminals is sent to each video terminal;
In the described steps A, described related information is set up and safeguarded to the terminal labels and the terminal name information of the video terminal that video terminal further sends according to MCU.
3. the method for claim 1 is characterized in that, described steps A further comprises:
When new video terminal added video conference, each video terminal upgraded described related information according to the terminal labels and the terminal name of the video terminal of current all participants in the video conference;
When video terminal left video conference, each video terminal was deleted the related information of the described video terminal that leaves in the video conference from described related information.
4. the method for claim 1, it is characterized in that among the described step B, described video terminal further generates described remote site title figure layer according to the configuration parameter of meeting place name, described configuration parameter comprises color, the size of meeting place name, and the display position of meeting place name.
5. method as claimed in claim 4 is characterized in that, after the configuration parameter of described meeting place name upgraded, among the described step B, described video terminal further generated and preserve new remote site title figure layer according to the configuration parameter after upgrading;
Among the described step C, video terminal further is added on the remote site image and exports display device to described new remote site title figure is stacked.
6. the method for claim 1 is characterized in that, described step C specifically comprises:
The video data decoding of the described remote site that video terminal will receive obtains the meeting field picture of remote site;
On the stacked meeting field picture that is added in described remote site of remote site title figure, and export display device to.
7. a video terminal is characterized in that, comprising:
The related information maintenance unit is used to set up and safeguard the terminal labels of participant video terminal and the related information between the terminal name;
Remote site title figure layer generation unit, be used for the related information safeguarded according to the terminal labels and the described related information maintenance unit of remote site, obtain the terminal name of this remote site correspondence, generate and preserve the remote site title figure layer of the terminal name that comprises described correspondence;
The meeting place name superpositing unit is used for that remote site title figure that described remote site title figure layer generation unit preserved is stacked to be added on the remote site image and to export display device to.
8. video terminal as claimed in claim 7 is characterized in that, described related information maintenance unit is further used for terminal labels and terminal name information according to the video terminal of MCU transmission, sets up and safeguard described related information.
9. video terminal as claimed in claim 7, it is characterized in that, described related information maintenance unit is further used for when new video terminal adds video conference, upgrades described related information according to the terminal labels and the terminal name of the video terminal of current all participants; And when video terminal leaves video conference, the related information of the described video terminal that leaves of deletion from described related information.
10. video terminal as claimed in claim 7 is characterized in that also comprising the user control interface unit,
Described user control interface unit is used to dispose and preserve the configuration parameter of meeting place name;
Described remote site title figure layer generation unit further generates described remote site title figure layer according to the configuration parameter that described user control interface unit is preserved.
11. video terminal as claimed in claim 7 is characterized in that, described meeting place name superpositing unit is further used for receiving the video data and the decoding of remote site, obtains the meeting field picture of remote site; On the stacked meeting field picture that is added in described remote site of remote site title figure, and export display device to.
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| CN 200710100162 CN101083752A (en) | 2007-06-05 | 2007-06-05 | Method for displaying meeting place name of video conference and video terminal |
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| CN101583011B (en) * | 2009-05-27 | 2012-04-04 | 华为终端有限公司 | Video conference control method and system, video conference network equipment and conference places |
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| WO2014187282A1 (en) * | 2013-08-23 | 2014-11-27 | 中兴通讯股份有限公司 | Method, apparatus and video terminal for establishing video conference interface |
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| CN101753329B (en) * | 2009-12-25 | 2013-08-07 | 华为终端有限公司 | Method for call setup, device and system therefor |
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| CN104427293B (en) * | 2013-08-23 | 2018-10-02 | 南京中兴新软件有限责任公司 | A kind of method, apparatus and video terminal for establishing video conference interface |
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| CN110139061A (en) * | 2019-04-04 | 2019-08-16 | 视联动力信息技术股份有限公司 | A kind of video flowing split screen methods of exhibiting and device |
| WO2022104800A1 (en) * | 2020-11-23 | 2022-05-27 | 京东方科技集团股份有限公司 | Virtual business card sending method and apparatus, and system and readable storage medium |
| US11917320B2 (en) | 2020-11-23 | 2024-02-27 | Boe Technology Group Co., Ltd. | Method, device and system for sending virtual card, and readable storage medium |
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