CN102510405A - Screen sharing method and system - Google Patents
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- CN102510405A CN102510405A CN2011103721215A CN201110372121A CN102510405A CN 102510405 A CN102510405 A CN 102510405A CN 2011103721215 A CN2011103721215 A CN 2011103721215A CN 201110372121 A CN201110372121 A CN 201110372121A CN 102510405 A CN102510405 A CN 102510405A
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Abstract
The invention provides a screen sharing system. The system comprises a screen shareware, a web server and a client side, wherein the screen shareware is deployed on a host requiring screen sharing and used for intercepting screen image data according to a certain frequency and sending the screen image data to the web server; the web server receives the image data sent by the screen shareware, maintains connection with the client side through an http communication protocol, and sends image information to the client side according to the request of the client side; and the client side actively and regularly sends a request to the web server and acquires and displays the screen-capture. The invention also further provides a screen sharing method. According to the screen sharing method and system provided by the invention, non-interactive screen sharing of multiple client sides is supported, the server has a small load, the demand on the network environment is low, and the screen sharing function can be served so long as the client side can surf the Internet and browse web pages.
Description
Technical field
The present invention relates to computer realm, particularly relate to a kind of screen sharing method and system of stateless communication.
Background technology
The client-side program that so-called Screen sharing refers to far-end reappears server end main frame interface under the time delay that can adapt to, thereby makes the remote subscriber sensation on the machine of oneself, realizes a kind of virtual interface environments.In systems such as long-distance education, remote system monitoring, be widely used at present.
Screen sharing is divided into interactive and noninteractive two kinds by function.Interactive screen is shared, and generally the GUI vector instruction through the operating system bottom realizes that such as the remote desktop of windows system, the user can operate remote service end main frame.The non-interactive type Screen sharing generally through API copy screen picture, is transferred to client after through multiple compression algorithm image information being compressed again, shows after client decompresses.
The present non-interactive type Screen sharing of main flow, employing be that server end is promoted mainly formula and shared, as shown in Figure 1, by 3 most of compositions:
Screen sharing software 100: be deployed in the main frame that needs to share screen, call API copy screen picture data, send to streaming media server 200 after the compression according to certain frequency.
Streaming media server 200: accepted screen shareware 100 data, keep the client link information, send image information to client.
Client: the information that decompresses and accept, exhibiting pictures.
The formula Screen sharing is promoted mainly in employing:
1, adopt the Screen sharing of mode of unicast and client communication, need to keep client to connect, very high to the server load requirement, the online number of support is restricted.
2, adopt the Screen sharing of multicast mode and client communication; Load to server is less; Can support a large number of users simultaneously online; But shortcoming is to need all client place network switchs to support multicast, in the Internet, can cause a part of user because the problem of switch can't using system.
Summary of the invention
The present invention provides a kind of screen sharing method and system of stateless communication, supports the Screen sharing of noninteractive multi-client, and server load is little, and network environment is required loose, and the client webpage that can surf the web can use this function.
In order to solve above technical problem, the present invention provides a kind of Screen sharing system, comprising: Screen sharing software, and the web server, client,
Said Screen sharing software is deployed in the main frame that needs to share screen, according to certain frequency screen printing view data, sends to the web server;
Said web server, the view data that the accepted screen shareware sends keeps client to connect through the http communications protocol, and answers the request of client to send image information to it;
Said client is initiatively regularly sent request to the web server, obtains screenshot capture and also shows.
Further, said Screen sharing software comprises screen acquisition module and image sending module, wherein,
Said screen acquisition module, regularly the screen printing image is compressed into the jpg format picture;
Said image sending module sends to the web server with picture.
Further, said web server comprises client manager module and image receiver module, wherein,
Said image receiver module with the Screen sharing software communication, receives picture;
Said client manager module, identification is also preserved the identity of client in the Screen sharing service, is used for the required screen picture resource location of positioning client terminal.
Further, said client comprises the image shows module, regularly sends request to the web server, obtains screenshot capture and displaying.
In order to solve above technical problem, the present invention also provides a kind of screen sharing method, comprising:
Screen sharing software connects the web server, and client connects the web server through the http communications protocol;
Screen sharing software timing screen printing image sends to the web server;
The view data that web server accepted screen shareware sends;
Client is initiatively regularly sent request to the web server through the http communications protocol, obtains screenshot capture;
The web server sends image information through the http communications protocol and gives client;
Client receives image information and shows.
Further, said method further comprises: the web server distributes the separate, stored zone for this client.
Further, said method further comprises: Screen sharing software sends and stops sharing request, and the content of web server deletion storage area is broken off connection.
In order to solve above technical problem, the present invention also provides a kind of screen sharing method, comprising:
Screen sharing software connects the web server, and client connects the web server through the http communications protocol;
Screen sharing software timing screen printing image sends to the web server;
The web server receives the view data that the screen shareware sends, and sends image information through the http communications protocol and give client;
Client receives image information and shows.
Further, said method further comprises: the web server distributes the separate, stored zone for this client.
Further, said method further comprises: Screen sharing software sends and stops sharing request, and the content of web server deletion storage area is broken off connection.
Compared with prior art, the present invention provides a kind of screen sharing method and system of stateless communication, and the stateless http communications protocol of customer end adopted is initiatively visited the web server, obtains data.Have following advantage:
1, support the Screen sharing of noninteractive multi-client, server load is little, supports that height is concurrent, allows more multi-client Connection Service device.
2, technology realizes simply need not Image Compression is understood in depth.
3, than multicast, network environment is required loose, the client webpage that can surf the web can use this function.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation that existing employing server end is promoted mainly the non-interactive type Screen sharing of formula;
Fig. 2 is the structural representation that the present invention provides a kind of Screen sharing system of stateless communication;
Fig. 3 is the flow chart that the present invention provides a kind of screen sharing method of stateless communication;
Fig. 4 is the flow chart that the present invention provides the screen sharing method of other a kind of stateless communication.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention provides a kind of Screen sharing technology of stateless communication, and the stateless http communications protocol of customer end adopted is initiatively visited the web server, obtains data.
As shown in Figure 2, the present invention provides a kind of Screen sharing system of stateless communication, comprising: Screen sharing software 10, and web server 20, client 30,
This Screen sharing software 10 is deployed in the main frame that needs to share screen, according to certain frequency screen printing view data, sends to web server 20, and it comprises screen acquisition module 11 and image sending module 12, wherein,
Screen acquisition module 11 uses the swt graphical interfaces storehouse of java to make, and regularly the screen printing image is compressed into the jpg format picture.The visually pleasant refreshing frequency of shared image should be no more than 200 milliseconds, promptly should gather 5 pictures a second.
Image sending module 12 connects web server 20, picture is sent to the agreement catalogue of web server.
This web server 20, the view data that accepted screen shareware 10 sends keeps client 30 to connect through the http communications protocol, and answers the request of client 30 to send image information to it.It comprises client manager module 21 and image receiver module 22, wherein,
Image receiver module 22 with 12 communications of image sending module, receives picture and handles the life cycle (create, keep, deletion) of picture.
Client manager module 21, identification are also preserved the identity of client 30 in the Screen sharing service, are used for the required screen picture resource location of positioning client terminal 30.
This client 30 keeps web server 20 to connect through the http communications protocol, and active is regularly sent request to the web server, obtains screenshot capture and displaying.It comprises image shows module 31, wherein, picture presentation module 31, the man-machine interface that the graphical control of use flex is made is regularly sent request to the web server, obtains screenshot capture and also shows.
Client 30 should be used multithreading, makes full use of the network bandwidth, once obtains plurality of pictures and guarantees the picture fluency.
Can there be time-delay in the interface of Screen sharing main frame and the interface of client shows, and according to the difference of application scenarios, sustainable delay duration can be distinguished to some extent, generally at 1 to 3 second.Keep certain delay, generate consecutive image can for the service end time enough.
As shown in Figure 3, the present invention provides a kind of screen sharing method of stateless communication, comprising:
Step 1, Screen sharing software connect the web server, and client connects the web server through the http communications protocol, and submits this client-side information to.
Step 2, web server distribute the separate, stored zone for this client.
Step 3, Screen sharing software timing screen printing image send to the web server.
Step 4, web server receive the view data that the screen shareware sends.
Step 5, client are initiatively regularly sent request to the web server through the http communications protocol, obtain screenshot capture.
Step 6, web server send image information through the http communications protocol and give client.
Step 7, client receive image information and show.
Step 8, Screen sharing software send and stop sharing request, and the content of web server deletion storage area is broken off connection.
As shown in Figure 4, the present invention provides a kind of screen sharing method of stateless communication, comprising:
Step 1, Screen sharing software connect the web server, and client connects the web server through the http communications protocol, and submits this client-side information to.
Step 2, web server distribute the separate, stored zone for this client.
Step 3, Screen sharing software timing screen printing image send to the web server.
Step 4, web server receive the view data that the screen shareware sends, and send image information through the http communications protocol and give client.
Step 5, client receive image information and show.
Step 6, Screen sharing software send and stop sharing request, and the content of web server deletion storage area is broken off connection.
Compared with prior art, the present invention provides a kind of screen sharing method and system of stateless communication, and the stateless http communications protocol of customer end adopted is initiatively visited the web server, obtains data.Have following advantage:
1, support the Screen sharing of noninteractive multi-client, server load is little, supports that height is concurrent, allows more multi-client Connection Service device.
2, technology realizes simply need not Image Compression is understood in depth.
3, than multicast, network environment is required loose, the client webpage that can surf the web can use this function.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention; But as previously mentioned; Be to be understood that the present invention is not limited to the form that this paper discloses, should do not regard eliminating as, and can be used for various other combinations, modification and environment other embodiment; And can in invention contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of accompanying claims of the present invention.
Claims (10)
1. a Screen sharing system is characterized in that, comprising: Screen sharing software, and the web server, client,
Said Screen sharing software is deployed in the main frame that needs to share screen, according to certain frequency screen printing view data, sends to the web server;
Said web server, the view data that the accepted screen shareware sends keeps client to connect through the http communications protocol, and answers the request of client to send image information to it;
Said client is initiatively regularly sent request to the web server, obtains screenshot capture and also shows.
2. the system of claim 1 is characterized in that, said Screen sharing software comprises screen acquisition module and image sending module, wherein,
Said screen acquisition module, regularly the screen printing image is compressed into the jpg format picture;
Said image sending module sends to the web server with picture.
3. the system of claim 1 is characterized in that, said web server comprises client manager module and image receiver module, wherein,
Said image receiver module with the Screen sharing software communication, receives picture;
Said client manager module, identification is also preserved the identity of client in the Screen sharing service, is used for the required screen picture resource location of positioning client terminal.
4. the system of claim 1 is characterized in that, said client comprises the image shows module, regularly sends request to the web server, obtains screenshot capture and displaying.
5. a screen sharing method is characterized in that, comprising:
Screen sharing software connects the web server, and client connects the web server through the http communications protocol;
Screen sharing software timing screen printing image sends to the web server;
The web server receives the view data that the screen shareware sends;
Client is initiatively regularly sent request to the web server through the http communications protocol, obtains screenshot capture;
The web server sends image information through the http communications protocol and gives client;
Client receives image information and shows.
6. method as claimed in claim 5 is characterized in that, said method further comprises: the web server distributes the separate, stored zone for this client.
7. method as claimed in claim 6 is characterized in that, said method further comprises: Screen sharing software sends and stops sharing request, and the content of web server deletion storage area is broken off connection.
8. a screen sharing method is characterized in that, comprising:
Screen sharing software connects the web server, and client connects the web server through the http communications protocol;
Screen sharing software timing screen printing image sends to the web server;
The web server receives the view data that the screen shareware sends, and sends image information through the http communications protocol and give client;
Client receives image information and shows.
9. method as claimed in claim 8 is characterized in that, said method further comprises: the web server distributes the separate, stored zone for this client.
10. method as claimed in claim 9 is characterized in that, said method further comprises: Screen sharing software sends and stops sharing request, and the content of web server deletion storage area is broken off connection.
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| CN2011103721215A CN102510405A (en) | 2011-11-18 | 2011-11-18 | Screen sharing method and system |
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| CN114363315A (en) * | 2022-01-10 | 2022-04-15 | 京东方科技集团股份有限公司 | Method and system for monitoring playing of screen equipment and storage medium |
| WO2023131269A1 (en) * | 2022-01-10 | 2023-07-13 | 京东方科技集团股份有限公司 | Method and system for monitoring playing of screen device, and storage medium |
| CN114374870A (en) * | 2022-01-24 | 2022-04-19 | 武汉卡比特信息有限公司 | Method and system for screen projection of mobile equipment |
| CN116055510A (en) * | 2023-01-31 | 2023-05-02 | 西安万像电子科技有限公司 | Cloud desktop screen sharing method and system, electronic equipment and storage medium |
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