CN102447693A - Screen sharing method and system for DLNA (Digital Living Network Alliance) terminals in home network - Google Patents
Screen sharing method and system for DLNA (Digital Living Network Alliance) terminals in home network Download PDFInfo
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- CN102447693A CN102447693A CN2011103417268A CN201110341726A CN102447693A CN 102447693 A CN102447693 A CN 102447693A CN 2011103417268 A CN2011103417268 A CN 2011103417268A CN 201110341726 A CN201110341726 A CN 201110341726A CN 102447693 A CN102447693 A CN 102447693A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2807—Exchanging configuration information on appliance services in a home automation network
- H04L12/2812—Exchanging configuration information on appliance services in a home automation network describing content present in a home automation network, e.g. audio video content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a screen sharing method and system for DLNA (Digital Living Network Alliance) terminals in a home network. The screen sharing method comprises the following steps: a MRCP (Media Renderer Control Point) obtains metadata information of a media item which is played by a DMP (Digital Media Player), and sends the metadata information to a designated DMR (Digital Media Renderer) of a user to perform capability matching; after the DMR successfully completes capability matching, the MRCP obtains the playing position of the DMP; and the MRCP allows the DMR to jump to the playing position for playing the media item. By adopting the method and system, sharing of a playing screen and playing characteristics among different DLNA terminals can be realized so as to provide user experience.
Description
Technical field
The present invention relates to the digital home network field, relate in particular to the screen sharing method and the system at DLNA in a kind of home network (Digital Living Network Alliance, DLNA) terminal.
Background technology
The proposition of DLNA agreement, purpose are in order to realize the interconnection of cable network and wireless network, to make unrestricted the sharing of Digital Media and content service become possibility.In digital home network, various digital media devices are arranged, for example digital camera, TV, PC, mobile phone, DPF, MP4 player or the like.These equipment can obtain up-to-date media content (picture, music and video) through the Internet, mobile network and radio network, and DLNA can make the media resource between three nets of interoperability broadcast seamlessly between the said equipment in digital home network.
DLNA is divided into four kinds of roles with the media device in the home network: digital media server (DMS), digital media player (DMP), Digital Media controller (DMC) and Digital Media renderer (DMR); They are referred to as the DLNA terminal; Wherein, DMS shares the media content of oneself to miscellaneous equipment, and it needs to realize that contents directory is professional, connection management is professional and the audio frequency and video transport service usually; DMR then accepts the propelling movement of DMS sharing media content and represents, and it usually needs to realize the audio frequency and video transport service, connection management is professional and it is professional to play up control.DMC is used to browse DMS and goes up the media content of sharing, and it is pushed to DMR plays, and also can on local player, play, and that is to say that DMP is the integration of DMC and local player; DMC is divided into two types: MSCP (media server control point) and MRCP (media renderer control point); MSCP is towards DMS; Be used to browse the sharing media content on the DMS, and MRCP is used to control the whole process that DMR plays the sharing media content on the DMS towards DMR.
As shown in Figure 1; It is the home network sketch map; Among the figure, various media devices connect through wireless router, and for example common PC, portable PC, TV connect through wired or wireless mode; The mobile phone terminal of band WIFI can only connect through wireless mode usually, and the media device of home network is realized interconnection through wireless router; Through the DLNA network; Media content on these equipment can be shared each other; Video file on the for example common PC both can be play on mobile phone, also can on portable PC or TV, play, and need the video file on the common PC not copied on these equipment.Generally, this can satisfy the medium of user between home network and share demand, if but a media item is arranged, the user wants on mobile phone, to play, and on TV or PC, plays simultaneously, and present DLNA can't handle this situation.
Summary of the invention
The objective of the invention is, the screen sharing method and the system at DLNA terminal in a kind of home network is provided, can not share the problem of screen to solve DLNA terminal room in the existing home network.
The invention provides the screen sharing method at DLNA terminal in a kind of home network, said method is:
MRCP obtains the metadata information of the in progress media item of DMP, and the DMR that sends it to user's appointment carries out capabilities match;
After above-mentioned DMR capabilities match success, obtain the play position of above-mentioned DMP;
Make above-mentioned DMR jump to above-mentioned play position and play above-mentioned media item.
Preferably, after above-mentioned DMR receives the metadata information of media item, carry out following steps:
According to the metadata information of above-mentioned media item, judge whether self can play above-mentioned media item, if then mate successfully; Otherwise, the coupling failure.
Preferably, said method is further comprising the steps of:
Monitor the broadcast state of above-mentioned DMR in real time;
If the broadcast state of above-mentioned DMR changes, then obtain the play position of above-mentioned DMR, and be synchronized to above-mentioned DMP.
Preferably, said method is further comprising the steps of:
The play property of the above-mentioned DMP of monitoring if the play property of above-mentioned DMP changes, is then obtained the current play property of above-mentioned DMP, and is synchronized to above-mentioned DMR in real time.
Preferably, said method is further comprising the steps of:
When above-mentioned DMR changes at local broadcast state, current play position is reported above-mentioned MRCP;
The play position that above-mentioned MRCP reports above-mentioned DMR is synchronized to above-mentioned DMP.
Preferably, said method is further comprising the steps of:
When above-mentioned DMP changes in local play property, current play property is reported above-mentioned MRCP;
The play property that above-mentioned MRCP reports above-mentioned DMP is synchronized to above-mentioned DMR.
Preferably, when being audio frequency and video as if above-mentioned media item, then said method is further comprising the steps of:
The play position of periodically obtaining above-mentioned DMP and above-mentioned DMR also compares;
If the difference of the play position of the play position of above-mentioned DMR and above-mentioned DMP is greater than preset threshold value, then the play position with above-mentioned DMR is synchronized to above-mentioned DMP.
The present invention also further provides the Screen sharing system at DLNA terminal in a kind of home network, comprises DMP, MRCP and DMR,
Above-mentioned DMP is used for playing media Xiang Shiwei user Screen sharing function interface and option being provided, and when user's request shared screen, user's request is sent to above-mentioned MRCP;
Above-mentioned MRCP is used to obtain the metadata information of the media item that above-mentioned DMP plays, and the DMR that sends it to appointment in user's request carries out capabilities match; And after above-mentioned DMR capabilities match success, obtain the play position of above-mentioned DMP, make above-mentioned DMR jump to above-mentioned play position and play above-mentioned media item.
Preferably, above-mentioned DMP is used for when play property changes, and current play property is reported above-mentioned MRCP;
Above-mentioned DMR is used for the metadata information according to the media item of receiving, judges whether self can play above-mentioned media item, and judged result is returned to above-mentioned MRCP; And when broadcast state changes, current play position is reported above-mentioned MRCP;
Above-mentioned MRCP is used for the play property that above-mentioned DMP reports is synchronized to above-mentioned DMR; The play position that perhaps above-mentioned DMR is reported is synchronized to above-mentioned DMP.
Preferably, above-mentioned MRCP is used for monitoring the play property of above-mentioned DMP and the broadcast state of above-mentioned DMR in real time, when the play property of above-mentioned DMP changes, obtains the current play property of above-mentioned DMP, and is synchronized to above-mentioned DMR; Broadcast state at above-mentioned DMR changes, and obtains the play position of above-mentioned DMR, and is synchronized to above-mentioned DMP; And when media item is audio frequency and video; The play position of periodically obtaining above-mentioned DMP and above-mentioned DMR also compares; In the difference of the play position of the play position of above-mentioned DMR and above-mentioned DMP during, the play position of above-mentioned DMR is synchronized to above-mentioned DMP greater than preset threshold value.
The invention solves the problem of DLNA terminal room Screen sharing; Realized the media content of playing on the DLNA terminal is synchronized on other DLNA terminal of home network and play; Make that different DLNA terminal room view screens and play property realize sharing, user experience is provided.
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 home network sketch map;
Fig. 2 is the flow chart of the screen sharing method preferred embodiment at DLNA terminal in the home network of the present invention;
Fig. 3 is the theory diagram of the Screen sharing optimum system choosing embodiment at DLNA terminal in the home network of the present invention.
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.
Because the present invention carries out under the prerequisite that in home network, has media item to play, and is necessary to explain the process of setting up of home network media item broadcast, and is specific as follows:
After home network powered on, MSCP obtained device descriptive information and the business description information of the DMS (being the DLNA terminal of band DMS function in the home network) in the network, to know its ability information; Simultaneously, MRCP obtains device descriptive information and the business description information of the DMR (being the DLNA terminal of band DMR function in the home network) in the network, to know its ability information;
The device descriptive information of DMR, DMS and business description information generally have following dual mode:
A kind of is the DMP active searching, is specially: MSCP and MRCP broadcasting MS (MediaServer media server) device search message, and search DMS available under home network and DMR and obtain its device descriptive information and business description information; Another kind is that DMS, DMR initiatively report, and is specially: initiatively report MSCP from own positional information to DMP and MRCP after DMS, the DMR initialization, MSCP and MRCP obtain device descriptive information and the business description information of DMS, DMR through above-mentioned positional information;
After MSCP gets access to the business description information of DMS, browse the media item of DMS, can comprise picture, music and video, be generally the tree tissue through the CDS business of DMS; When browsing certain one-level; DMS returns the metadata information of all media item under this grade; The metadata information of media item comprises media item name, media item size, media item length of a film, content type and access mode (for example HTTP Streaming Media mode or RTSP Streaming Media mode) etc., so that the user searches own interested content;
After the user chooses the media item that will play; The metadata information of the media item that MSCP chooses according to the user; To carrying out media delivery between the DMP, the media item on the DMS is sent to DMP (being the DLNA terminal of band DMP function in the home network) at DMS, DMP plays above-mentioned media item.
After media item was play, the user wanted the media item of the current broadcast of DMP is shared to the DMR in the network, and when keeping current play position, then only needed the interface that provides through DMP, selected the DMR that view screen is shared and selection will be shared to get final product.
As shown in Figure 2, be the flow chart of the screen sharing method preferred embodiment at DLNA terminal in the home network of the present invention, the media item that present embodiment setting user chooses is audio frequency and video, and the DMR capabilities match that the user will share is successful, specifically may further comprise the steps:
Step S01:DMP playing media item, the user asks Screen sharing;
Step S02:MRCP obtains the metadata information of the in progress media item of DMP, and the DMR that sends it to user's appointment carries out capabilities match;
Step S03:DMR judges self and can play above-mentioned media item according to the metadata information of above-mentioned media item, returns the coupling success message and gives MRCP;
The media play ability of DMR and DMP and Streaming Media tenability might be different; The audio frequency and video business that provides through DMR judges that it whether can the playing media item; When DMR judges self can not play above-mentioned media item the time, then return the coupling failed message and give MRCP, this shares failure; When DMR judges self can play above-mentioned media item the time, then continue flow.
After step S04:MRCP receives the coupling success message, obtain the play position of DMP;
Step S05: the positioning action that provides through the AVT business makes above-mentioned DMR jump to above-mentioned play position and plays above-mentioned media item;
For audio frequency and video, because the difference of network condition after playing a period of time, DMP and DMR may occur and play nonsynchronous problem, the present invention guarantees the broadcast stationary problem of DMP, DMR through following steps.
Step S06: the play position of periodically obtaining DMP and DMR;
Step S07: relatively whether the difference L of the play position of the play position of DMR and DMP greater than preset threshold value K, if, execution in step S08 then; Otherwise, execution in step S06;
Step S08: the play position of DMR is synchronized to DMP.
The present invention is the situation of picture for media item, because the broadcast time-delay is less to the user experience influence, so need not carry out the synchronous of DMP and DMR; But for media item is the situation of audio frequency and video, owing to play time-delay, the inconsistent situation of picture that can cause DMP, DMR to play influence user experience, so need that DMP and DMR's is synchronous.
The present invention is after giving DMR with the Screen sharing of DMP; Also need change after (for example volume adjusting, screen intensity adjusting etc.) in the play property of DMP; Above-mentioned play property is synchronized to shared DMR; Perhaps when the broadcast state of DMR changes, its play position is synchronized to DMP, does not influence user experience with picture synchronization or the picture time-delay that guarantees the two broadcast; The present invention realizes through dual mode:
One of which is that MRCP initiatively monitors, and is specially:
MRCP monitors the play property of broadcast state and the DMP of DMR in real time, if the broadcast state of DMR changes, then obtains the play position of DMR, and is synchronized to DM P; If the play property of DMP changes, then obtain the current play property (the for example current volume of DMP, current screen brightness, current screen aberration etc.) of DMP, and be synchronized to DMR;
Another kind of be specially: local broadcast state changes for DMR, DMP initiatively report, and DMR reports current play position to give MRCP, and the play position that MRCP reports DMR is synchronized to DMP; Local play property changes, and DMP reports current play property to give MRCP, and MRCP is synchronized to DMR with the play property that DMP reports.
MRCP is set on the DMR through the professional play property with DMP of control of playing up that DMR provides, and accomplishes the synchronous of DMR and DMP play property.
As shown in Figure 3, be the theory diagram of the Screen sharing optimum system choosing embodiment at DLNA terminal in the home network of the present invention, comprise DMP, MRCP and DMR,
DMP is used for playing media Xiang Shiwei user Screen sharing function interface and option being provided, and when user's request shared screen, user's request is sent to above-mentioned MRCP, and when play property changes, current play property is reported above-mentioned MRCP;
MRCP is used to obtain the metadata information of the media item that DMP plays, and the DMR that sends it to user's appointment carries out capabilities match; And after above-mentioned DMR capabilities match success, obtain the play position of above-mentioned DMP, make above-mentioned DMR jump to above-mentioned play position and play above-mentioned media item; The play property of the above-mentioned DMP of monitoring and the broadcast state of above-mentioned DMR when the play property of above-mentioned DMP changes, obtain the current play property of above-mentioned DMP, and are synchronized to above-mentioned DMR in real time; Broadcast state at above-mentioned DMR changes, and obtains the play position of above-mentioned DMR, and is synchronized to above-mentioned DMP; The play property that perhaps above-mentioned DMP is reported is synchronized to above-mentioned DMR, and the play position that above-mentioned DMR is reported is synchronized to above-mentioned DMP; And when media item is audio frequency and video; The play position of periodically obtaining above-mentioned DMP and above-mentioned DMR also compares; In the difference of the play position of the play position of above-mentioned DMR and above-mentioned DMP during, the play position of above-mentioned DMR is synchronized to above-mentioned DMP greater than preset threshold value;
DMR is used for the metadata information according to the media item of receiving, judges whether self can play above-mentioned media item, and judged result is returned to above-mentioned MRCP; And when broadcast state changes, current play position is reported above-mentioned MRCP.
Above-mentioned explanation illustrates and has described the preferred embodiments 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. the screen sharing method at DLNA DLNA terminal in the home network is characterized in that said method is:
Media renderer control point MRCP obtains the metadata information of the in progress media item of digital media player DMP, and the renderer DMR of Digital Media that sends it to user's appointment carries out capabilities match;
After said DMR capabilities match success, obtain the play position of said DMP;
Make said DMR jump to said play position and play said media item.
2. method according to claim 1 is characterized in that, after said DMR receives the metadata information of media item, carries out following steps:
According to the metadata information of said media item, judge whether self can play said media item, if then mate successfully; Otherwise, the coupling failure.
3. method according to claim 1 is characterized in that, said method is further comprising the steps of:
Monitor the broadcast state of said DMR in real time;
If the broadcast state of said DMR changes, then obtain the play position of said DMR, and be synchronized to said DMP.
4. method according to claim 3 is characterized in that, said method is further comprising the steps of:
The play property of the said DMP of monitoring if the play property of said DMP changes, is then obtained the current play property of said DMP, and is synchronized to said DMR in real time.
5. method according to claim 1 is characterized in that, said method is further comprising the steps of:
When said DMR changes at local broadcast state, current play position is reported said MRCP;
The play position that said MRCP reports said DMR is synchronized to said DMP.
6. method according to claim 5 is characterized in that, said method is further comprising the steps of:
When said DMP changes in local play property, current play property is reported said MRCP;
The play property that said MRCP reports said DMP is synchronized to said DMR.
7. according to each described method of claim 1-6, it is characterized in that when being audio frequency and video as if said media item, then said method is further comprising the steps of:
The play position of periodically obtaining said DMP and said DMR also compares;
If the difference of the play position of the play position of said DMR and said DMP is greater than preset threshold value, then the play position with said DMR is synchronized to said DMP.
8. the Screen sharing system at DLNA terminal in the home network comprises DMP, MRCP and DMR, it is characterized in that,
Said DMP is used for playing media Xiang Shiwei user Screen sharing function interface and option being provided, and when user's request shared screen, user's request is sent to said MRCP;
Said MRCP is used to obtain the metadata information of the media item that said DMP plays, and the DMR that sends it to appointment in user's request carries out capabilities match; And after said DMR capabilities match success, obtain the play position of said DMP, make said DMR jump to said play position and play said media item.
9. system according to claim 8 is characterized in that,
Said DMP is used for when play property changes, and current play property is reported said MRCP;
Said DMR is used for the metadata information according to the media item of receiving, judges whether self can play said media item, and judged result is returned to said MRCP; And when broadcast state changes, current play position is reported said MRCP;
Said MRCP is used for the play property that said DMP reports is synchronized to said DMR; The play position that perhaps said DMR is reported is synchronized to said DMP.
10. according to Claim 8 or 9 described systems, it is characterized in that said MRCP; Be used for monitoring in real time the play property of said DMP and the broadcast state of said DMR; When the play property of said DMP changes, obtain the current play property of said DMP, and be synchronized to said DMR; Broadcast state at said DMR changes, and obtains the play position of said DMR, and is synchronized to said DMP; And when media item is audio frequency and video; The play position of periodically obtaining said DMP and said DMR also compares; In the difference of the play position of the play position of said DMR and said DMP during, the play position of said DMR is synchronized to said DMP greater than preset threshold value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103417268A CN102447693A (en) | 2011-11-02 | 2011-11-02 | Screen sharing method and system for DLNA (Digital Living Network Alliance) terminals in home network |
| PCT/CN2012/076928 WO2013063941A1 (en) | 2011-11-02 | 2012-06-14 | Screen sharing method and system for dlna terminal in home network |
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| CN2011103417268A CN102447693A (en) | 2011-11-02 | 2011-11-02 | Screen sharing method and system for DLNA (Digital Living Network Alliance) terminals in home network |
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| WO2013063941A1 (en) * | 2011-11-02 | 2013-05-10 | 中兴通讯股份有限公司 | Screen sharing method and system for dlna terminal in home network |
| CN104584570A (en) * | 2012-08-23 | 2015-04-29 | 三菱电机株式会社 | Synchronization transmission server |
| CN104584570B (en) * | 2012-08-23 | 2018-10-09 | 三菱电机株式会社 | Synchronous publisher server |
| CN103634621B (en) * | 2012-08-27 | 2019-04-16 | 中兴通讯股份有限公司 | Synchronisation control means and device, system are played in a kind of video recommendations business |
| US9723368B2 (en) | 2012-08-27 | 2017-08-01 | Zte Corporation | Method, device and system and for play synchronization control in video recommendation service |
| WO2013178190A3 (en) * | 2012-08-27 | 2014-01-09 | 中兴通讯股份有限公司 | Method, device and system and for play synchronization control in video recommendation service |
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| WO2014110898A1 (en) * | 2013-01-21 | 2014-07-24 | 中兴通讯股份有限公司 | Media resource synchronous playback method and system based on dlna |
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| CN105284095A (en) * | 2013-05-07 | 2016-01-27 | 耐瑞唯信有限公司 | A media player for receiving media content from a remote server |
| CN104618785B (en) * | 2014-04-16 | 2018-01-05 | 腾讯科技（北京）有限公司 | Audio and video playing method, apparatus and system |
| CN104618785A (en) * | 2014-04-16 | 2015-05-13 | 腾讯科技（北京）有限公司 | Audio and video playing method, device and system |
| WO2015172546A1 (en) * | 2014-05-14 | 2015-11-19 | 华为技术有限公司 | Multimedia data processing device, system and method |
| CN104244070A (en) * | 2014-09-16 | 2014-12-24 | 广东欧珀移动通信有限公司 | Multimedia file playing method and device |
| CN104268208B (en) * | 2014-09-23 | 2018-06-22 | 广东欧珀移动通信有限公司 | A kind of method and device of centralized displaying file |
| CN104268208A (en) * | 2014-09-23 | 2015-01-07 | 广东欧珀移动通信有限公司 | Centralized file display method and apparatus |
| CN105763933A (en) * | 2014-12-19 | 2016-07-13 | 中兴通讯股份有限公司 | Media file current playing position sharing method |
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| CN107562174A (en) * | 2017-08-22 | 2018-01-09 | 维沃移动通信有限公司 | A kind of screen control method and terminal device |
| CN111212090A (en) * | 2020-02-20 | 2020-05-29 | 上海聚力传媒技术有限公司 | Terminal list acquisition method and device, computer equipment and storage medium |
| CN111258526A (en) * | 2020-05-06 | 2020-06-09 | 上海幻电信息科技有限公司 | Screen projection method and system |
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