CN101198047B - Television broadcasting method and system - Google Patents
Television broadcasting method and system Download PDFInfo
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- CN101198047B CN101198047B CN2007103056441A CN200710305644A CN101198047B CN 101198047 B CN101198047 B CN 101198047B CN 2007103056441 A CN2007103056441 A CN 2007103056441A CN 200710305644 A CN200710305644 A CN 200710305644A CN 101198047 B CN101198047 B CN 101198047B
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Abstract
The invention discloses a television broadcasting method which comprises the following steps: compressed coding of audio and video signals of television programs is performed by a server; audio and video synchronization of audio and video data after compression is performed by the server, and audio and video data after synchronization is sent to a mobile terminal through a wireless network; the mobile terminal decodes received audio and video data and plays the audio and video signals of the television programs obtained after decoding. The invention also discloses a television broadcasting system. By utilization of the television broadcasting method and the television broadcasting system, the mobile terminal can view the television programs under the condition of wireless network environment and better user experience can be obtained.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of television broadcasting method and system.
Background technology
Along with widening of development of wireless communication devices, wireless Internet application, more and more abundanter based on the various application on the wireless network, satisfied mobile phone users craving for greatly to information.The application of playing TV on portable terminal is exactly the big focus of one in the wireless application, and it has satisfied the requirement of people to portable real-time TV information, and the information on the portable terminal of having enriched represents pattern.The application of playing TV at present on portable terminal moves to maturity just fast, but what current implementation method was used for reference basically is the stream media technology of wired internet, the application model and the cable network on its upper strata are similar, and the transport layer of lower floor then is to realize the RTP/RTCP agreement of an abstract simplification of process in wireless network.Therefore need be at transport layer while transmission tone video data and synchronous control signal.After these data arrived portable terminal, portable terminal utilized synchronous control signal that audio and video streams is carried out synchronously, as sorts and alignment operation, then the audio, video data after the broadcast synchronously.
Based on the transport layer that this mode is constructed, agreement and control technology are all very complicated, implement quite difficulty.The transmission of control signal has simultaneously also taken precious bandwidth resources, has reduced the efficiency of transmission of actual useful audio, video data, and has increased the network layer burden of portable terminal.Audio, video data arrives after the portable terminal, and portable terminal need carry out synchronously audio-video signal, and the storage computation resource that takies portable terminal is bigger, also is that common mobile terminal is difficult to bear.Also have because synchronous control signal may cumulative departure in the process of transmission, when watching TV programme for a long time, may cause the step-out of audio ﹠ video.
In addition, in existing mobile terminal television Play System, the general unidirectional audio-video signal transmission of only considering server end to portable terminal, the feedback system that lacks mobile phone users, be not mutual basically between server and the portable terminal, portable terminal can only become " making a mute " terminal, and passive receives information.
In a word, in existing mobile terminal television Play System, when the user watched TV programme by portable terminal, the user experience of acquisition was not fine.
Summary of the invention
Embodiments of the invention provide a kind of television broadcasting method and system, utilize method and system provided by the invention, and portable terminal can be watched TV programme under wireless network environment, and obtain better user experience.
In order to reach purpose of the present invention, the technical scheme of the embodiment of the invention is achieved in that a kind of television broadcasting method comprises:
Server end carries out compressed encoding to the audio-video signal of TV programme;
Server end audio, video data after with described compression, that channel is identical, acquisition time is identical carries out audio-visual synchronization, and described audio, video data after is synchronously sent to portable terminal by wireless network;
The audio, video data that the portable terminal decoding receives, and the audio-video signal of the TV programme of broadcast decoder acquisition.
A kind of television broadcasting system comprises:
Content is formulated server, is used for the audio-video signal of TV programme is carried out compressed encoding; Audio, video data behind the coding is transferred to Content Management/publisher server;
Content Management/publisher server is used for audio, video data after the compression, that channel is identical, acquisition time is identical is carried out audio-visual synchronization, and the audio, video data is synchronously sent to portable terminal by wireless network;
Portable terminal, the audio, video data that is used to decode and receives, and the audio-video signal of the TV programme of broadcast decoder acquisition.
In television broadcasting method provided by the invention and the system, because carrying out at server end synchronously of audio, video data, and need not transmitting synchronous control information in wireless network, like this than prior art, increased the efficiency of transmission of actual available audio, video data, and need not to take the storage computation resource of portable terminal, the most important thing is to prevent the step-out of audio ﹠ video at portable terminal.In addition just because of in player method of the present invention and system, by server end carry out to audio, video data synchronously, server end just can be according to the instruction of portable terminal like this, audio-video signal to different channel and different image quality quality carries out synchronously in real time, and be transferred to mobile terminal playing, thereby realize the interaction of server end and portable terminal.The user can obtain better user experience when watching TV programme by portable terminal like this, and, interaction more smooth as TV programme is more or the like.
Description of drawings
Fig. 1 is the television broadcasting method of the embodiment of the invention.
Fig. 2 is the television broadcasting system of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the television broadcasting method of the embodiment of the invention.As shown in Figure 1, comprise following each step.
Step 101: server end carries out compressed encoding to the audio-video signal of TV programme.
At first with the anolog TV signals digitlization, with the TV programme audio frequency and video streaming after the digitlization collect server end, the corresponding time of record tone video in the time of collection.That can adopt digital TV set-top box or other here can be with the digitized equipment of anolog TV signals.
Secondly server end carries out compressed encoding respectively to audio frequency, the video data of TV programme, the subsidiary temporal information of gathering of the audio, video data after the compression.In view of these audio, video datas will generally all should adopt the not too big compression algorithm of compression ratio height, distortion by the wireless network transmissions of smaller bandwidth.
Here can adopt many code streams compression method, can generate the audio, video data of multiple code stream parameter like this for the TV programme audio-video signal of same channel simultaneously, the image quality quality that different code stream parameters is corresponding different.
Step 102: the audio, video data after server end will compress carries out audio-visual synchronization, and the audio, video data is synchronously sent to portable terminal by wireless network.
Audio, video data after server end will compress is put into two buffering areas respectively according to the time order and function order, is respectively audio buffer and screen buffer.In reality realized, these two buffer pool sizes were very big, and can be set to deposit with the current time is the TV programme of benchmark about 1 hour, and concrete parameter can be provided with as required.
After server end receives access request from portable terminal, from audio buffer and screen buffer, take out current available data respectively, these data are the audio, video data of a certain channel correspondence, according to subsidiary acquisition time information audio, video data is carried out synchronously, form one section synchronous audio, video data.Here can be the high image quality code stream by synchronous audio, video data, also can be low image quality code stream; Also can be that voice data is the high image quality code stream, video data be low image quality code stream.Under special circumstances, server end can also only send voice data or video data to portable terminal, only play sound of television like this on the portable terminal or only see video, or situation that portable terminal wish save flow poor especially applicable to the mobile terminal network condition.Implementation method can be, server end takes out one section blank video data from screen buffer, itself and the voice data that takes out from audio buffer are sent to portable terminal synchronously, perhaps from audio buffer, take out one section quiet data, itself and the video data that takes out from screen buffer are sent to portable terminal synchronously.In a word, server end can carry out the Voice ﹠ Video data of different image quality code streams synchronously, only needs the channel of these audio frequency, video data identical and acquisition time is identical gets final product.Audio, video data after server end will be somebody's turn to do synchronously then is assembled into a bag, sends to portable terminal by wireless network.
Audio, video data after the information that comprises in this bag comprises synchronously, the length of voice data, the length and the video frame number of video data.Because this bag will be in wireless network transmissions, thus require its size should adapt to the characteristics of wireless network, cannot establish too much, to guarantee the success rate of transmission.
Because the quality of wireless network difference of different regions is very big, after same channel being pressed into multiple audio, video data with different code streams parameter, the measured portable terminal of map network matter, server end can issue the code stream that image quality is good, data volume is big, the ropy portable terminal of map network, server end can issue the code stream that image quality is low, data volume is little.After the change of network environment of portable terminal, server end can dynamically switch to different code streams, also can respond the interaction instruction that mobile phone users initiatively sends, thereby switch on the different code streams.
Certainly server end also can respond the interaction instruction that mobile phone users initiatively sends, thereby switch on another channel, this moment, server end directly took out the audio, video data of corresponding channel from audio buffer and screen buffer, to send to portable terminal behind the audio, video data synchronization group bag that take out, broadcast before portable terminal need not to close just can switch on another channel.
Step 103: the audio, video data that the portable terminal decoding receives, and the audio-video signal of the TV programme that obtains behind the broadcast decoder.
Because being finished by server end synchronously of audio, video data, this moment, portable terminal can be play-overed the audio-video signal that obtains after the decoding.And, therefore can stop the step-out of audio ﹠ video owing to need not the transmitting synchronous control signal.
But because the narrow bandwidth and the time delay of wireless network, server end might be slower than the processing speed of server end to the TV programme audio-video signal to the speed that portable terminal sends audio, video data, this may cause the progress of playing audio-video on the portable terminal of network condition difference to lag behind the speed that server end is gathered audio frequency and video, and the time that falls behind can be accumulated always.The data that this moment, server end can detect portable terminal automatically transmit progress or determine whether carrying out jumping backward and play by receiving interaction instruction from the active request of portable terminal.When carrying out jump broadcast backward, hopping time backward according to the server end setting, can be to jump to current up-to-date audio, video data backward when default, perhaps according to comprising hopping time backward in the mobile terminal interdynamic instruction, server end suspends current audio frequency and video transmission, but directly from audio buffer and screen buffer, take out the audio, video data of corresponding time period, to being issued to portable terminal behind the audio, video data synchronization group bag that takes out.Certainly server end also can be play the interaction instruction of TV programme according to jumping forward from the requirement of portable terminal, the audio frequency and video transmission that the same time-out of server end this moment is current, directly from audio buffer and screen buffer, take out the audio, video data of corresponding time period, to being issued to portable terminal behind the audio, video data synchronization group bag that takes out.
In above television broadcasting method, server end not only can be to portable terminal transmission tone video data, can also be according to carrying out corresponding operation from the interaction instruction of portable terminal, as the front/rear jump broadcast of code stream, TV programme etc. of switching high/low image quality.Introduce reciprocal process concrete between server end and the portable terminal below.
Server end at first sends interactive information to portable terminal, after portable terminal receives this interactive information, this interactive information is carried out feedback, promptly send interaction instruction to server end, the server end record is from the interaction instruction of portable terminal, and the execution corresponding action.Wherein server end can be captions, picture and audio frequency and video or the like to the interactive information that portable terminal sends.The content of interactive information comprises two classes at least, one class is as switching high/low image quality code stream, the front/rear jump broadcast of TV programme, switching TV channel, appointment television or the like, need the instruction of server end according to portable terminal, corresponding audio, video data is carried out synchronously, and send to portable terminal and play, one class such as TV programme ballot and interactive answer or the like need server end record and statistics.
When carrying the Play Control information of interactive information in the interactive information, after portable terminal receives interactive information from server end, show this interactive information according to the mode of the Play Control information indication that receives.When not carrying the Play Control information of interactive information in the interactive information, after portable terminal receives this interactive information, show this interactive information by the interactive display mode of giving tacit consent to.Here Play Control information indicating mobile terminal is play the mode of interactive information, as can being in television content, to intercut, be about to one section current audio-video frequency content and replace with the appointment interactive information, and the group bag sends to portable terminal, then portable terminal transfers to play interactive information, also can be to show simultaneously, as on television content, playing interactive caption information or the like by certain rule with television content.
Server end to the process that portable terminal sends interactive information can also be server end with interactive information with synchronously after audio/video information be assembled into a bag and send to portable terminal, then the information that comprises in this bag further comprises the length and the interactive information of interactive information, interactive information this moment audio, video data general and in same bag has confidential relation, is TV plot guess interaction based on this audio, video data or the like as this interactive information.
Can also utilize the location technology in the wireless network accurately to send interactive information, residing roughly regional as can determine portable terminal by base station number information subsidiary in wireless network base station and the portable terminal, and the locator data when server end record portable terminal lands at every turn.Server end can be pressed regional delivering interactive information accurately according to the locator data of portable terminal like this.As when being configured at server end, issuing which kind of interactive information in which kind of geographic coverage.
When the content of interaction during for the front/rear jump broadcast of code stream, TV programme of switching high/low image quality, switching TV channel etc., can directly initiate interaction instruction by portable terminal, after server end receives this interaction instruction, carry out operation accordingly.
Can also on portable terminal, preset some interactive informations, as video.Do not receive at portable terminal before the interactive information of server end that portable terminal can be play this interactive information according to the display mode of acquiescence.In the time of waiting for the channel data buffering, also this interactive information can be play, information such as " buffering please be waited for " can be marked with significantly this moment at interactive information, to inform user's current state.
In above interaction mode, it can be indirect modes such as note, phone that mobile terminal user participates in interactive mode, also can be to use portable terminal directly interactive, concrete method such as user press a string prompting key assignments at the keyboard of portable terminal, be combined into the instruction of specific meanings, portable terminal changes into the interaction instruction packet with these key informations according to interaction protocol, be sent to server end by wireless network then, and can after sending successfully, inform the user with forms such as screen captions.
Server end also is responsible for the mobile phone users identity that checking is landed in addition, determines user's authority, managing user information etc.As determining certain TV programme that a part of mobile terminal user can be downloaded, screenshotss are not identified as copy-protected content; Or confirm that certain a part of fee family can watch some charging channel or the like.
Figure 2 shows that the television broadcasting system in the embodiment of the invention.As shown in Figure 2, this television broadcasting system comprises portable terminal, content formulation server, interactive management server, Content Management/publisher server, subscriber management server, wherein content formulation server, interactive management server, Content Management/publisher server, subscriber management server belong to server end equipment, in the realization of reality, they can be to realize on an equipment, can realize on a plurality of equipment that also the present invention does not do qualification.
It is the making source of live telecast data that content is formulated server, is responsible for gathering the TV programme audio, video data, and the audio-video signal of TV programme is carried out compressed encoding, and the audio, video data behind the compressed encoding is transferred to Content Management/publisher server.
Content Management/publisher server carries out audio-visual synchronization with the audio, video data after the compression, and the audio, video data is synchronously sent to portable terminal by wireless network.
Content Management/publisher server also is responsible for the management of television multimedia data simultaneously, comprises that channel is opened to close management, channel channel selection, management functions such as the Information Statistics of server end.Content Management/publisher server can respond mobile terminal request, and management is connected with portable terminal, and for portable terminal is organized audio, video data, integrated interactive information sends to portable terminal with audio, video data or interactive information via wireless network at last.
The interactive management server provides the administration portal of interactive information for the background work personnel, thereby by interactive management server organization issuing interactive information, and this interactive information sent to Content Management/publisher server, send to portable terminal by Content Management/publisher server.The user can be by the instruction of issuing interactive on portable terminal, thereby information feedback is arrived this interactive management server, the interactive management server is responsible for writing down feedback, and some interaction instruction that needs Content Management/publisher server to carry out corresponding actions sent to Content Management/publisher server, carry out corresponding actions by Content Management/publisher server.
Subscriber management server is responsible for verifying the identity of login user, determines user's authority, managing user information etc.
Portable terminal receives TV audio, video data and the interactive information from Content Management/publisher server, and audio, video data that responsible decoding receives and interactive information are also play.Portable terminal receives user's key command input, will instruct and feed back to interactive management system by wireless network, thereby control content management/publisher server is carried out corresponding operating.
A kind of television broadcasting method and system that the utilization embodiment of the invention proposes, can on existing wireless network, realize the live of TV programme easily, allow the user in moving, still can see up-to-date TV programme, the acquisition smoothness, real-time viewing experience by portable terminal.Wherein in an embodiment of the present invention, portable terminal can be that mobile phone terminal, notebook, PDA or the like can be linked in the wireless network and have the terminal of certain disposal ability.
Can also realize simultaneously the interaction of TV, the guiding user participates in the TV programme, and carry out and answer the activity of grade with lottery unexpectedly, or according to user's needs customizing programming etc.Even can allow the user when TV is seen on the limit, with other spectators' dialogues that coexist and watch, share information etc.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a television broadcasting method is characterized in that, comprising:
Server end carries out compressed encoding to the audio-video signal of TV programme;
Server end audio, video data after with described compression, that channel is identical, acquisition time is identical carries out audio-visual synchronization, and described audio, video data after is synchronously sent to portable terminal by wireless network;
The audio, video data that the portable terminal decoding receives, and the audio-video signal of the TV programme of broadcast decoder acquisition.
2. method according to claim 1 is characterized in that, described server end carries out compressed encoding to the audio-video signal of TV programme and comprises:
Described server end carries out many code streams compressed encoding to the audio-video signal of the TV programme of each channel, for the audio, video data that the TV programme audio-video signal of each channel obtains having multiple code stream parameter respectively, the subsidiary temporal information of gathering of the audio, video data after the wherein said compression.
3. method according to claim 1 is characterized in that further comprise, portable terminal sends interaction instruction by wireless network to server end;
After server end receives interaction instruction from portable terminal, carry out operation accordingly.
4. as method as described in the claim 3, it is characterized in that, when described interaction instruction comprises the front/rear jump broadcast of code stream, the TV programme of switching high/low quality, switching TV channel, appointment television, described server end is carried out corresponding operation and is comprised according to interaction instruction and select corresponding audio, video data to carry out synchronously from the audio, video data after the compression.
5. as method as described in the claim 4, it is characterized in that, when described interaction instruction comprises the code stream that switches high/low quality, described according to selecting corresponding audio, video data to comprise synchronously the audio, video data of interaction instruction after compressing: as from the audio, video data after the compression, to select to carry out synchronously according to the audio, video data after the code stream compression of parameters of high/low quality according to interaction instruction;
When comprising the front/rear jump of TV programme, described interaction instruction plays, and described according to selecting corresponding audio, video data to comprise synchronously the audio, video data of interaction instruction after compressing: as directly from the audio, video data after the compression, to select the audio, video data of corresponding time period correspondence to carry out synchronously according to interaction instruction;
When described interaction instruction comprises switching TV channel, appointment television, describedly from the audio, video data after the compression, select corresponding audio, video data to comprise synchronously: from the audio, video data after the compression, to select the audio, video data of corresponding television channel or predetermined TV programme correspondence to carry out synchronously according to interaction instruction according to interaction instruction.
6. as method as described in the claim 3, it is characterized in that described portable terminal, further comprised by wireless network before server end sends interaction instruction:
Server end sends interactive information by wireless network to portable terminal;
Portable terminal receives interactive information;
Wherein, when described server end carried the Play Control information of interactive information in the interactive information that portable terminal sends, after described portable terminal received described interactive information, the mode of indicating according to the Play Control information that receives showed interactive information;
When described server end does not carry the Play Control information of interactive information in the interactive information that portable terminal sends, after described portable terminal receives described interactive information, according to the interactive display mode demonstration interactive information of acquiescence.
7. method according to claim 1 is characterized in that, further comprises, the mobile phone users identity that described server end checking is landed is determined user's authority, managing user information.
8. a television broadcasting system is characterized in that, comprising:
Content is formulated server, is used for the audio-video signal of TV programme is carried out compressed encoding, and the audio, video data behind the coding is transferred to Content Management/publisher server;
Content Management/publisher server is used for audio, video data after the compression, that channel is identical, acquisition time is identical is carried out audio-visual synchronization, and the audio, video data is synchronously sent to portable terminal by wireless network;
Portable terminal, the audio, video data that is used to decode and receives, and the audio-video signal of the TV programme of broadcast decoder acquisition.
9. as system as described in the claim 8, it is characterized in that, further comprise:
The interactive management server is used to organize issuing interactive information, and interactive information is sent to Content Management/publisher server; Receive and write down interaction instruction, and the interaction instruction that will need Content Management/publisher server to carry out corresponding actions sends to Content Management/publisher server from portable terminal;
Described Content Management/publisher server is further used for receiving the interactive information from the interactive management server, and interactive information is sent to portable terminal; Reception is carried out operation accordingly from the interaction instruction of interactive management server;
Described portable terminal is further used for receiving and shows interactive information, according to the interactive information that receives or initiatively send interaction instruction to the interactive management server.
10. as system as described in the claim 9, it is characterized in that, further comprise:
Subscriber management server is used to verify the identity of the mobile phone users that lands, and determines user's authority, managing user information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007103056441A CN101198047B (en) | 2007-12-26 | 2007-12-26 | Television broadcasting method and system |
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| CN2007103056441A CN101198047B (en) | 2007-12-26 | 2007-12-26 | Television broadcasting method and system |
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| CN101198047A CN101198047A (en) | 2008-06-11 |
| CN101198047B true CN101198047B (en) | 2010-04-21 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924955A (en) | 2009-06-16 | 2010-12-22 | 中兴通讯股份有限公司 | Method and system for improving play quality of mobile TV |
| CN102263990A (en) * | 2011-07-29 | 2011-11-30 | 宇龙计算机通信科技(深圳)有限公司 | Method, device and system for playing digital TV programs |
| CN103974020B (en) * | 2013-02-06 | 2018-09-25 | 深圳市腾讯计算机系统有限公司 | Audio, video data acquisition method and device |
| CN104427394A (en) * | 2013-09-02 | 2015-03-18 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN104683823A (en) * | 2013-11-29 | 2015-06-03 | 红板凳科技股份有限公司 | Multi-screen linked audio and video synchronizing system |
| CN103905881B (en) * | 2014-03-13 | 2018-07-31 | 北京奇艺世纪科技有限公司 | The method, apparatus and equipment that a kind of video data and audio data are played simultaneously |
| CN103986966B (en) * | 2014-05-28 | 2017-09-29 | 广州视源电子科技股份有限公司 | It is a kind of that intelligent television image is pushed to the system and method that mobile terminal is shown |
| CN105578245B (en) * | 2014-10-09 | 2018-11-16 | 宏碁股份有限公司 | The method and its electronic device of multimedia document transmission |
| CN104717522A (en) * | 2015-03-20 | 2015-06-17 | 深圳市环球数码创意科技有限公司 | System and method for carrying out playing with multiple video devices synchronized with one audio device |
| CN106998495A (en) * | 2016-01-22 | 2017-08-01 | 百度在线网络技术（北京）有限公司 | A kind of video broadcasting method and device |
| CN106804004A (en) * | 2017-03-10 | 2017-06-06 | 北京百变悟空科技有限公司 | A kind of television video control method and system |
| CN109951650B (en) * | 2019-01-07 | 2024-02-09 | 北京汉博信息技术有限公司 | Campus radio station system |
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