CN103517095A - A set top box which enables video synchronization sharing to be carried out and a video signal synchronization sharing method - Google Patents
A set top box which enables video synchronization sharing to be carried out and a video signal synchronization sharing method Download PDFInfo
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- CN103517095A CN103517095A CN201210201710.1A CN201210201710A CN103517095A CN 103517095 A CN103517095 A CN 103517095A CN 201210201710 A CN201210201710 A CN 201210201710A CN 103517095 A CN103517095 A CN 103517095A
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- video signal
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Abstract
The invention provides a set top box which enables video synchronization sharing to be carried out and a video signal synchronization sharing method. The method comprises the following steps: information of a shared program is sent to a head terminal server; multicast group IP addresses and PORTs sent back by the head terminal server are received in order to establish a multicast group; several users are selected from an address book to be invitees; an invitation for sharing video signals are sent to all the invitees by means of an exoanded SDP protocol; SDP response information returned by all the invitees are received; account numbers and IP addresses of all the invitees are resolved according to the SDP response information, and the account numbers and the IP addresses of the invitees are sent to the head terminal server; and video decoding codes sent back by the head terminal server are received, and the multicast of the video signals begins to be carried out. According to the set top box and the video signal synchronization sharing method, one user can invite a plurality of users to watch the same video simultaneously by means of a multicast communication mechanism. Through the multicast communication mode, the data is synchronized and the communication pressure of the head terminal server is mitigated.
Description
Technical field
The present invention relates to a kind ofly carry out the synchronous shared Set Top Box of video signal and video signal is synchronously shared method, relate in particular to the synchronous shared Set Top Box of a kind of carried out video signal realizing by the mode of multicast (Multicast) communication and video signal and synchronously share method.
Background technology
When a plurality of users think simultaneously read fortune with video signal time, traditional processing mode is: each user utilizes Set Top Box with the mode head-end server of program request, to send request separately respectively, and head end server sends identical data to each user in the mode of clean culture (Unicast) communication.The session channel that each user and head end server are set up is like this independently, can not accomplish the Complete Synchronization of video signal, in the mode of clean culture communication, repeatedly sends identical data to each user, has also increased the pressure of head end server data communication.
Summary of the invention
The invention provides and a kind ofly carry out the synchronous shared Set Top Box of video signal and video signal is synchronously shared method.
Carry out the synchronous shared Set Top Box of video signal, comprising: a sharing module, for sending, share programme information to one head end server; One shares invitation module, for selecting some users as invited party from this Set Top Box one address book, and to whole invited parties, sends by expansion SDP agreement the invitation of sharing video signal; One information analysis module, for receiving the SDP response message that whole invited parties return, the SDP response message returning according to whole invited parties parses whole invited parties' account HeIP address, and whole invited parties' that this is parsed account number HeIP address is sent to described head end server; And one share communication module, when determining that in head end server have IP available address and PORT carries out multicast, receive multicast group IP address that described head end server beams back and PORT to set up a multicast group, and when head end server determines that according to invited party's account number HeIP address invited party is legal, receive the decryption of video password that head end server is beamed back, start multicast video signal.
A kind of video signal is synchronously shared method and is comprised step: send and share programme information to one head end server; When head end server determines that have IP available address and PORT carries out multicast, receive multicast group IP address that head end server beams back and PORT to set up a multicast group; From an address book, select some users as invited party, and to whole invited parties, send by expansion SDP agreement the invitation of sharing video signal; Receive the SDP response message that whole invited parties return, the SDP response message returning according to whole invited parties parses whole invited parties' account HeIP address, and whole invited parties' that this is parsed account number HeIP address is sent to described head end server; When head end server determines that according to invited party's account number HeIP address invited party is legal, receive the decryption of video password that head end server is beamed back, start multicast video signal.
The synchronous shared Set Top Box of video signal and the video signal of carrying out of the present invention synchronously shared method and made a user can invite a plurality of users to see together same video signal by cast communication mechanism simultaneously, original a plurality of users are seen to same video signal need to set up a plurality of sessions and change into and only set up a session simultaneously, head end server sends to each user in the mode of multicast (Multicast) communication data, can make like this data realize real synchronous, also alleviate the communication pressure of head end server.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the synchronous shared system of video signal under better embodiment of the present invention.
Fig. 2 is the hardware structure figure of the synchronous shared system of video signal of the present invention.
Fig. 3 be under the preferred embodiment for the present invention in the synchronous shared system of video signal invited party carry out video signal and synchronously share the method flow diagram of method.
Fig. 4 be under the preferred embodiment for the present invention in the synchronous shared system of video signal invited party carry out the method flow diagram that video signal is synchronously shared method.
Fig. 5 be under the preferred embodiment for the present invention in the synchronous shared system of video signal head end server carry out video signal and synchronously share the method flow diagram of method.
Main element symbol description
| The synchronous shared system of |
1 |
| Invited |
10 |
| Invited |
20 |
| |
30 |
| Sharing module | 101 |
| Share and invite module | 102 |
| Information analysis module | 103 |
| Share communication module | 104 |
| Communication module | 201 |
| Reminding module | 202 |
| Share and participate in module | 203 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1 and Fig. 2, the synchronous shared system 1 of video signal comprises an invited party 10, an invited party 20 and a head end server 30.In the present invention, take 1 invited party as example describes, be not limited to 1.Invited party 10 can be the Set Top Box of DVB-T, and invited party 20 can be the Set Top Box of DVB-T or the electronic installation of the watched video signal that registration is used in the synchronous shared system 1 of video signal, and head end server 30 is a webserver.
This invited party 10 comprises that a sharing module 101, is shared invitation module 102, an information analysis module 103 and is shared communication module 104.The function of concrete module describes in connection with Fig. 3.
Invited party 20 comprises a communication module 201, a reminding module 202 and a shared module 203 that participates in.The function of concrete module describes in connection with Fig. 4.
The concrete function of head end server 30 describes in connection with Fig. 5.
Fig. 3 be under the preferred embodiment for the present invention in the synchronous shared system of video signal invited party 10 carry out video signals and synchronously share the method flow diagram of method.
In step S11, sharing module 101 sends shares programme information to head end server 30;
In step S12, share communication module 104 when head end server 30 determines that having available IP address and PORT carries out multicast, receive multicast group IP address that described head end server 30 beams back and PORT to set up a multicast group;
In step S13, share and invite module 102 to select some users as invited party 20 from this Set Top Box one address book, and to whole invited parties 20, send the invitation of sharing video signal by expansion SDP agreement;
In step S14, information analysis module 103 receives the SDP response message that whole invited parties 20 return, and parses whole invited parties' 20 account HeIP address, and be sent to head end server 30 according to the SDP response message returning;
In step S15, share communication module 104 when head end server 30 determines that according to invited party 20 account number HeIP address invited party 20 is legal, the decryption of video password that receiving terminal server 30 is beamed back, starts multicast video signal.
Wherein, content by expansion SDP agreement realizes that to share the invitation of video signal as follows: if video signal is called out, the SessionName(s of SDP when send inviting) value is set to " tv ", and increases Media Description (m) and property column (a).As follows, m value is set to " tv ", (a): IP is the group address of multicast video signal, and (a): PORT is its port numbers, (a): the title that NAME is film, tell the content that invited party invites.Adopt the mode of this expansion SDP agreement, when normal telephone is called out, carried the information of video signal, thereby carried out when having realized video signal and phone.
Session Name(s):tv
(m):tv
(a):IP=224.XXX.XXX.XXX
(a):PORT=XXXX
(a):NAME=XXXXXX
Fig. 4 be under the preferred embodiment for the present invention in the synchronous shared system of video signal invited party carry out the method flow diagram that video signal is synchronously shared method.
In step S21, communication module 201 receives the invitation request that invited party 10 sends;
In step S22, reminding module 202 identification request contents, prompting user selects, for example, on display interface, show: XXX invites your Kan<Jurassic Park together >, please select: 1. accept phone; 2. accept video signal; 3. accept video signal also converses simultaneously; 4. abandon;
In step S23, share participation module 203 and generate corresponding SDP response message and be sent to invited party according to user's selection result;
In step S24, after head end server 30 determines that invited party 20 is validated user, communication module 201 receives the decryption of video password that head end server 30 is beamed back, and starts multicast video signal.
Suppose that the SDP that invited party 10 sends invites as follows:
Session Name(s):tv
(m):audio 49174 RTP/AVP 18 98 13
(a):xxxxxx
......
(m):tv
(a):IP=224.XXX.XXX.XXX
(a):PORT=XXXX
(a):NAME=VIDEO NAME
It is as follows that the shared SDP response message that participates in module 203 generations can be divided into 3 classes:
Class1: only receive calls,
Session Name(s):
(m):audio 49174 RTP/AVP 18 98 13
(a):xxxxxx
......
Type 2: only accept video signal,
Session Name(s):tv
(m):tv
(a):IP=XXX.XXX.XXX.XXX
(a):PORT=XXXX
(a):NAME=ACCOUNT NAME
Type 3: accept video signal and also converse simultaneously,
Session Name(s):tv
(m):audio 49174 RTP/AVP 18 98 13
(a):xxxxxx
......
(m):tv
(a):IP=XXX.XXX.XXX.XXX
(a):PORT=XXXX
(a):NAME=ACCOUNT NAME
Fig. 5 be under the preferred embodiment for the present invention in the synchronous shared system of video signal head end server 30 carry out video signals and synchronously share the method flow diagram of method.
In step S31, head end server 30 receives invited party 10 and sends the programme information of sharing;
In step S32, head end server 30 determines whether to have available IP address and PORT carries out multicast, when confirming to have available IP address and PORT, send multicast group IP address and PORT to invited party 10 to set up a multicast group;
In step S33, head end server 30 receives the invited party's 20 of invited party 10 transmissions account HeIP address;
In step S34, head end server 30 determines that according to invited party 20 account number HeIP address whether invited party 20 is legal, sends decryption of video password to invited party 10 and invited party 20 when legal, starts multicast video signal.
Under other execution modes of the present invention, invited party 20 can propose at any time to exit in video signal process, because phone and video signal are two processes independently separately after share setting up, hanging up the telephone and exiting video signal is independent of each other.
Under other execution modes of the present invention, after video signal finishes, head end server 30 sends video signal ending message to each user in the mode of clean culture communication.
Under other execution modes of the present invention, invited party 10 returns to head end server 30 by group IP after cancelling current multicast group.
Under other execution modes of the present invention, after invited party 10 receives ending message, group report is exited in transmission.
Claims (6)
1. can carry out the synchronous shared Set Top Box of video signal, it is characterized in that, this Set Top Box comprises:
One sharing module, shares programme information to one head end server for sending;
One shares invitation module, for selecting some users as invited party from this Set Top Box one address book, and to whole invited parties, sends by expansion SDP agreement the invitation of sharing video signal;
One information analysis module, for receiving the SDP response message that whole invited parties return, the SDP response message returning according to whole invited parties parses whole invited parties' account HeIP address, and whole invited parties' that this is parsed account number HeIP address is sent to described head end server; And
One shares communication module, when determining that in head end server have IP available address and PORT carries out multicast, receive multicast group IP address that described head end server beams back and PORT to set up a multicast group, and when head end server determines that according to invited party's account number HeIP address invited party is legal, receive the decryption of video password that head end server is beamed back, start multicast video signal.
2. the synchronous shared Set Top Box of video signal of carrying out as claimed in claim 1, is characterized in that, described Set Top Box returns to head end server by ZuIP address after cancelling current multicast group.
3. the synchronous shared Set Top Box of video signal of carrying out as claimed in claim 1, is characterized in that, described Set Top Box sends and exits group report after receiving ending message.
4. video signal is synchronously shared a method, comprises step:
Send and share programme information to one head end server;
When head end server determines that have IP available address and PORT carries out multicast, receive multicast group IP address that head end server beams back and PORT to set up a multicast group;
From an address book, select some users as invited party, and to whole invited parties, send by expansion SDP agreement the invitation of sharing video signal;
Receive the SDP response message that whole invited parties return, the SDP response message returning according to whole invited parties parses whole invited parties' account HeIP address, and whole invited parties' that this is parsed account number HeIP address is sent to described head end server;
When head end server determines that according to invited party's account number HeIP address invited party is legal, receive the decryption of video password that head end server is beamed back, start multicast video signal.
5. video signal as claimed in claim 4 is synchronously shared method, it is characterized in that, the method also comprises step: after cancelling current multicast group, ZuIP address is returned to head end server.
6. video signal as claimed in claim 4 is synchronously shared method, it is characterized in that, the method also comprises step: after receiving ending message, send and exit group report.
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| CN201210201710.1A CN103517095A (en) | 2012-06-18 | 2012-06-18 | A set top box which enables video synchronization sharing to be carried out and a video signal synchronization sharing method |
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| CN201210201710.1A CN103517095A (en) | 2012-06-18 | 2012-06-18 | A set top box which enables video synchronization sharing to be carried out and a video signal synchronization sharing method |
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Cited By (2)
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| CN106162236A (en) * | 2015-03-23 | 2016-11-23 | 腾讯科技（深圳）有限公司 | A kind of method and device of sharing video frequency |
| CN106506444A (en) * | 2016-09-21 | 2017-03-15 | 中国电子科技集团公司第三十研究所 | A kind of media negotiation system and method towards LTE group systems |
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| CN1852431A (en) * | 2005-12-23 | 2006-10-25 | 华为技术有限公司 | System and method for realizing video frequency information sharing |
| CN101836417A (en) * | 2007-10-26 | 2010-09-15 | 朗讯科技公司 | Method and terminal for forwarding an IPTV program to an SIP terminal |
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| CN106162236A (en) * | 2015-03-23 | 2016-11-23 | 腾讯科技（深圳）有限公司 | A kind of method and device of sharing video frequency |
| CN106162236B (en) * | 2015-03-23 | 2019-07-19 | 腾讯科技（深圳）有限公司 | A kind of method and device of sharing video frequency |
| CN106506444A (en) * | 2016-09-21 | 2017-03-15 | 中国电子科技集团公司第三十研究所 | A kind of media negotiation system and method towards LTE group systems |
| CN106506444B (en) * | 2016-09-21 | 2019-04-26 | 中国电子科技集团公司第三十研究所 | A kind of media negotiation system and method towards LTE group system |
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