CN100531398C - Method for realizing multiple audio tracks in mobile multimedia broadcast system - Google Patents
Method for realizing multiple audio tracks in mobile multimedia broadcast system Download PDFInfo
- Publication number
- CN100531398C CN100531398C CNB2006101118167A CN200610111816A CN100531398C CN 100531398 C CN100531398 C CN 100531398C CN B2006101118167 A CNB2006101118167 A CN B2006101118167A CN 200610111816 A CN200610111816 A CN 200610111816A CN 100531398 C CN100531398 C CN 100531398C
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- broadcast system
- multimedia broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/233—Processing of audio elementary streams
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2368—Multiplexing of audio and video streams
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
- H04N21/8113—Monomedia components thereof involving special audio data, e.g. different tracks for different languages comprising music, e.g. song in MP3 format
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The method comprises: when the multimedia broadcast system sends audio data stream containing one or more audio tracks in one channel; the audio data is divided into audio packet header and N audio units; in the audio packet header there are serial number of each audio unit; putting the serial numbers of audio units into one or more allocated data channel to send out.
Description
Technical field
The present invention relates to mobile multimedia broadcast system, more particularly, relate to a kind of multitone rail transfer approach of mobile multimedia broadcast system.
Background technology
Mobile Multimedia Broadcasting is a kind of Play Technique for Multimedia of rising in recent years.By portable terminal, under the situation of high-speed mobile, can watch TV.Portable terminal can receive programme by wireless protocols, and can select own programs of interest, thereby can flow by receiving multimedia data, is implemented on the portable terminal to teleview.
The aerial data of mobile multimedia broadcast system emission are divided into different channels, and by the multiplex technique transmission, portable terminal can receive relevant data, by the player on the terminal, realize the normal play of TV.
For same channel, mobile multimedia broadcast system can send 1 track, also can send a plurality of tracks.
The method that realizes the multitone rail in the prior art has following 2 kinds:
First, TS (Transport Stream, transport stream) mode, the TS agreement is MPEG (Moving PictureExpert Group, Motion Picture Experts Group) a kind of in the standard, it is placed on video, audio frequency and control information in the packet of fixing 188 byte-sized and transmits, by PID (Program Identifier, program code) field is distinguished different tracks, thereby can support the broadcast of multitone rail.
Second, ISMA (Internet Streaming Media Alliance, internet stream media alliance) mode, the ISMA standard is with RTP (Real Time Transport Protocol, RTP) transmits multimedia messages, can open a plurality of RTP passages, transmit different tracks, this mode is adapted at using on the IP network.
Yet there are the following problems for the method for above-mentioned existing techniques in realizing multitone rail: each bag of TS mode is very little, and efficient is lower, and ISMA mode range of application is little, can only use on IP network.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of multitone rail transfer approach that mobile multimedia broadcast system uses that is adapted at, and can send the voice data that comprises one or more tracks of a channel.
In order to address the above problem, the invention provides a kind of multitone rail transfer approach of mobile multimedia broadcast system, it is characterized in that:
(1) will need the unified numbering of the track that transmits, each track has unique number;
(2) each track is divided into a plurality of audio units, and audio unit is encapsulated in the audio section, with the length of each audio unit, track number, reproduction time is recorded in the audio frequency paragraph header relatively;
(3) audio section is encapsulated in the service channel and transmits.
Wherein, also add synchronous head between described each audio unit and do isolation.
Wherein, the track number of each audio unit in the described audio frequency paragraph header is by the audio unit serial number.
Wherein, the data in the described service channel also comprise the subframe head.
Wherein, also comprise the length information of audio unit in the described audio frequency paragraph header, be used for locating and cut apart each audio unit data
Wherein, described audio frequency also comprises timestamp information in the packet header, is used to indicate the time of broadcast.
Wherein, mobile multimedia broadcast system sends 1 full frames of data at a Fixed Time Interval, and this full frames of data is made up of 1 control channel and M-1 described data channel of fixed size, and M fixes.
Wherein, the bandwidth of described each data channel is a fixed value, the common data that transmit 1 channel of a plurality of data channel.
Wherein, also comprise the element number of each audio unit in the audio frequency packet header, by the audio unit serial number.
The present invention is by being encapsulated in a plurality of tracks in the channel, and the voice data in the channel is divided into a plurality of audio units, transmit by one or more passages, can realize that 1 track, 2 tracks or the track more than 2 transmit simultaneously in a channel, and have higher efficiency of transmission.
Description of drawings
Fig. 1 is that the channel data of the multitone rail transfer approach of mobile multimedia broadcast system of the present invention is sealed the assembling structure schematic diagram;
Fig. 2 is to use the inventive method to realize the schematic diagram of 2 tracks.
Embodiment
Be further described below in conjunction with the multitone rail transfer approach of accompanying drawing mobile multimedia broadcast system of the present invention.
Mobile multimedia broadcast system sends 1 full frames of data at a Fixed Time Interval, and Fixed Time Interval can be 1 second, also can be the other times value.Full frames of data is made up of M passage, is divided into 1 control channel and M-1 data passage.Port number M fixes.
Wherein passage 0 is a control channel, is used for control information transmission and the rendition list.Passage 1 is a data channel to passage M-1, is used for the transmission channel data.
As shown in Figure 1, channel data comprises: subframe head, video-frequency band, audio section and data segment, voice data all are encapsulated in audio section.Wherein, the subframe head is mainly control information.Audio section is divided into audio frequency paragraph header and N audio unit, does isolation with synchronous head between each audio unit, to reach wrong function of isolating.
Comprise the descriptor to N audio unit in the audio frequency paragraph header, comprising: the length of each audio unit, the track number of audio unit, wherein, the length of audio unit can be used for locating cuts apart each audio unit data, can be provided with flexibly.Reproduction time is meant the time of broadcast relatively, and track number is to be used for identifying this audio unit to belong to which track.In addition, can also be to the audio unit serial number, as element number.
By said method, just realized in a channel, comprising a plurality of tracks, so just can transmit by aerial with the form of wireless multi-media broadcast signal.
Fig. 2 is to use the multitone rail transfer approach of mobile multimedia broadcast system of the present invention to realize the schematic diagram of 2 tracks.Audio frequency paragraph header and synchronous head have been omitted among the figure.Suppose that first track has 15 audio units, the 2nd track has 10 audio units, as shown in Figure 2, the 1st track comprises: 1,3,5,7,9,11,13,15,17,19,21,22,23,24,25, the 2 tracks of audio unit comprise: audio unit 2,4,6,8,10,12,14,16,18,20.Among the figure, there is synchronous head to cut apart each audio unit between each audio unit.
The audio unit of 2 tracks can not exclusively be arranged according to above-mentioned order, and its order can be adjusted flexibly.
According to mentioned above principle, can realize that 1 track, 2 tracks or the track more than 2 transmit simultaneously in the one or more data channel that channel distributed.
For example, comprise under the situation of 2 tracks at 1 channel, each data channel has the speed of 256Kbit/s.
Wherein: long 122 bytes of subframe, video-frequency band has the 22.5K byte, audio frequency segment length 8K byte, data segment length 1K byte for the part of not enough 32K byte, can fill complete 0.Audio section comprises 2 tracks, and each track has 32Kbit/s.Compare the efficient that has improved transmission greatly with the TS mode.
Such channel can satisfy the transmission of the AAC audio track data of the transmission of video data of the H264 of 1 QVGA resolution, 25 frames or AVS and 2 32Kbit/s, can provide the mobile broadcast television program with quite satisfied high-quality track to the user.
Claims (9)
1, a kind of multitone rail implementation method of mobile multimedia broadcast system, it is characterized in that: mobile multimedia broadcast system send a channel comprise the voice data of one or more tracks the time, these voice datas are divided into audio frequency packet header and N audio unit, the track number that comprises each audio unit in the audio frequency packet header places it in then to this channel is distributed one or more data channel and sends.
2, the method for claim 1 is characterized in that, also adds synchronous head between described each audio unit and does isolation.
3, the method for claim 1 is characterized in that, the track number of each audio unit in the audio frequency paragraph header is by the audio unit serial number.
4, the method for claim 1 is characterized in that, the data in the service channel also comprise the subframe head.
5, the method for claim 1 is characterized in that, also comprises the length information of audio unit in the described audio frequency paragraph header, is used for locating cutting apart each audio unit data.
6, the multitone rail implementation method of mobile multimedia broadcast system as claimed in claim 1 is characterized in that, described audio frequency also comprises timestamp information in the packet header, is used to indicate the time of broadcast.
7, the multitone rail implementation method of mobile multimedia broadcast system as claimed in claim 1, it is characterized in that, mobile multimedia broadcast system sends 1 full frames of data at a Fixed Time Interval, this full frames of data is made up of 1 control channel and M-1 described data channel of fixed size, and M fixes.
8, the multitone rail implementation method of mobile multimedia broadcast system as claimed in claim 7 is characterized in that, the bandwidth of described each data channel is a fixed value, the common data that transmit 1 channel of a plurality of data channel.
9, the multitone rail implementation method of mobile multimedia broadcast system as claimed in claim 1 is characterized in that, also comprises the element number of each audio unit in the audio frequency packet header, by the audio unit serial number.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101118167A CN100531398C (en) | 2006-08-23 | 2006-08-23 | Method for realizing multiple audio tracks in mobile multimedia broadcast system |
| PCT/CN2006/003783 WO2008028367A1 (en) | 2006-08-23 | 2006-12-30 | A method for realizing multi-audio tracks for mobile mutilmedia broadcasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101118167A CN100531398C (en) | 2006-08-23 | 2006-08-23 | Method for realizing multiple audio tracks in mobile multimedia broadcast system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1960498A CN1960498A (en) | 2007-05-09 |
| CN100531398C true CN100531398C (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101118167A Expired - Fee Related CN100531398C (en) | 2006-08-23 | 2006-08-23 | Method for realizing multiple audio tracks in mobile multimedia broadcast system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100531398C (en) |
| WO (1) | WO2008028367A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101453286B (en) * | 2007-12-07 | 2011-04-20 | 中兴通讯股份有限公司 | Method for digital audio multiplex transmission in multimedia broadcasting system |
| WO2013122387A1 (en) | 2012-02-15 | 2013-08-22 | Samsung Electronics Co., Ltd. | Data transmitting apparatus, data receiving apparatus, data transceiving system, data transmitting method, and data receiving method |
| WO2013122385A1 (en) | 2012-02-15 | 2013-08-22 | Samsung Electronics Co., Ltd. | Data transmitting apparatus, data receiving apparatus, data transreceiving system, data transmitting method, data receiving method and data transreceiving method |
| WO2013122388A1 (en) * | 2012-02-15 | 2013-08-22 | Samsung Electronics Co., Ltd. | Data transmission apparatus, data receiving apparatus, data transceiving system, data transmission method and data receiving method |
| WO2013122386A1 (en) | 2012-02-15 | 2013-08-22 | Samsung Electronics Co., Ltd. | Data transmitting apparatus, data receiving apparatus, data transreceiving system, data transmitting method, data receiving method and data transreceiving method |
| CN102739587B (en) * | 2012-06-16 | 2014-05-21 | 天地融科技股份有限公司 | Audio data transmission method |
| CN103595672B (en) * | 2012-06-16 | 2017-06-06 | 天地融科技股份有限公司 | Audio data transmission method |
| CN103595673B (en) * | 2012-06-16 | 2017-04-19 | 天地融科技股份有限公司 | Audio data transmission method |
| CN102769591B (en) | 2012-06-21 | 2015-04-08 | 天地融科技股份有限公司 | Self-adaptive method, self-adaptive system and self-adaptive device for audio communication modulation modes and electronic signature implement |
| CN102769590B (en) * | 2012-06-21 | 2014-11-05 | 天地融科技股份有限公司 | Self-adaptive method, self-adaptive system and self-adaptive device for audio communication modulation modes and electronic signature implement |
| CN102821076B (en) * | 2012-06-29 | 2014-12-24 | 天地融科技股份有限公司 | Audio communication modulation way self-adaptive method, system, device and electronic sign tool |
| CN112000308B (en) * | 2020-09-10 | 2023-04-18 | 成都拟合未来科技有限公司 | Double-track audio playing control method, system, terminal and medium |
| CN113542688B (en) * | 2021-07-14 | 2023-03-28 | 杭州海康威视数字技术股份有限公司 | Audio and video monitoring method, device, equipment, storage medium and system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4797879A (en) * | 1987-06-05 | 1989-01-10 | American Telephone And Telegraph Company At&T Bell Laboratories | Packet switched interconnection protocols for a star configured optical lan |
| US5956674A (en) * | 1995-12-01 | 1999-09-21 | Digital Theater Systems, Inc. | Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels |
| KR100247345B1 (en) * | 1997-01-28 | 2000-03-15 | 윤종용 | Dvd audio disc reproducing apparatus and method |
| JP2003198495A (en) * | 2001-12-27 | 2003-07-11 | Victor Co Of Japan Ltd | Method and device for encoding data and method and device for decoding data |
| US7305043B2 (en) * | 2002-10-17 | 2007-12-04 | Ibiquity Digital Corporation | Method and apparatus for formatting signals for digital audio broadcasting transmission and reception |
| CN100379285C (en) * | 2003-06-13 | 2008-04-02 | 苹果电脑公司 | Synthesis of vertical blanking signal |
-
2006
- 2006-08-23 CN CNB2006101118167A patent/CN100531398C/en not_active Expired - Fee Related
- 2006-12-30 WO PCT/CN2006/003783 patent/WO2008028367A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN1960498A (en) | 2007-05-09 |
| WO2008028367A1 (en) | 2008-03-13 |
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