CN101110960A - Multimedia broadcast data transmission method, device and system - Google Patents
Multimedia broadcast data transmission method, device and system Download PDFInfo
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- CN101110960A CN101110960A CNA2007101198908A CN200710119890A CN101110960A CN 101110960 A CN101110960 A CN 101110960A CN A2007101198908 A CNA2007101198908 A CN A2007101198908A CN 200710119890 A CN200710119890 A CN 200710119890A CN 101110960 A CN101110960 A CN 101110960A
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Abstract
The present invention discloses a multimedia broadcast data transmitting method, which comprises a generating and transmitting broadcast channel frame. The broadcast channel frame comprises at least one multiplexing frame, the multiplexing frame comprises at least one multiplexing sub-frame, the multiplexing sub-frame at least comprises a video section, an audio section, or a data section, and the section head of each video section, audio section, or data section comprises load unit amount information; a receiving end receives the broadcast channel frame, each multiplexing sub-frame is analyzed from each multiplexing frame of the broadcast channel frame, according to the load unit amount information contained in the section head of each video section, audio section, or data section which are comprised in each multiplexing sub-frame, the video unit number of the corresponding video section, the audio unit number of the corresponding audio section and the data unit number of the data section are confirmed, and the information of each video section, audio section or data section is analyzed. The present invention can improve the correct rate of the receiving end decoding.
Description
Technical field
The present invention relates to Mobile Multimedia Broadcasting, relate in particular to sending, receiving method and the corresponding device thereof and the system of multimedia broadcast data.
Background technology
In the front end system of mobile multimedia, multiplexing function is to finish information encapsulation and arrangements such as audio frequency, video, data, electron service instruction, the broadcast channel frame that generation can transmit on mobile multimedia broadcasting channel, a broadcast channel frame is made of a plurality of multiplexed frames, and a multiplexed frame is made up of multiplex frame head, multiplexed frame payload and filling; The multiplexed frame payload is made up of one or more multiplexed sub frames, can comprise 15 multiplexed sub frames at most.
As shown in Figure 1, the audio frequency of same business substantially stream, video-frequency basic flow and data flow encoded after, by segment encapsulation in same multiplexed sub frame, supplementary such as electron service instruction, user management is encapsulated in respectively in the different multiplexed sub frames, and the multiplexed sub frame control information is encapsulated in the special-purpose multiplexed frame.
Present announced GY/T 220.2-2006 standard code the multiplexed frame of video, audio frequency, data and control information in China Mobile's multimedia system and the form of multiplexed sub frame.A multiplexed sub frame is made up of subframe head, video-frequency band, audio section and data segment, looks (sound) frequency range or data segment and is made up of paragraph header and a plurality of load unit, has described the parameter of each load unit in the paragraph header.The concrete structure schematic diagram of looking (sound) frequency range and data segment as shown in Figure 2.Comprise: (for video-frequency band, its load unit is called the video load unit to a paragraph header and n load unit; For audio section, its load unit is called the audio-frequency load unit; For data segment, its load unit is called the data payload unit).Wherein comprise following field in the paragraph header again:
Paragraph header length (12bit);
Reserved field;
The parameter field of n load unit;
The Cyclic Redundancy Check field.
Because it is all multifactor that the abominable and user of wireless propagation environment is in mobile status etc., cause the loss of radio transmission, multimedia messages is responsive especially to mistake after overcompression, thus through the multimedia messages after the overcompression when wireless channel is propagated, mistake very easily appears.And the error code of transmission and packet loss can directly influence the identification of receiving terminal to video-frequency band, audio section and data segment.Usually, when receiving terminal identifies video-frequency band appearance mistake, can't continue follow-up audio section and data segment are discerned.When receiving terminal can't be known the video unit quantity that video-frequency band comprised in the multiplexed sub frame, audio unit quantity that audio section comprised and data cell quantity that data segment comprised, because video-frequency band, audio section and the data segment of being unable to estimate current reception also will comprise the data of what load units, thus the efficient and the correctness of influence decoding.
Summary of the invention
The invention provides a kind of multi-media broadcast data transmission method, by in the paragraph header of video-frequency band, audio section or data segment that multiplexed sub frame comprised, increasing the load unit quantity information, to improve the accuracy of receiving terminal decoding.
A kind of multi-media broadcast data transmission method comprises:
Generate and send broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
Receive described broadcast channel frame, from each multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
Each load unit in described video-frequency band, audio section and the data segment also comprises the load head, in order to original position and the load length that indicates this load unit.
Comprise following field in the described load head:
Initial code is used to indicate the original position of a load unit;
Marker bit is used to indicate whether this load unit is last load unit of carrying video, audio frequency or data message;
Loadtype is used to indicate this load unit institute data carried by data stream type;
Load length, the byte number of video, audio frequency and the data message that is used to indicate this load unit to carry;
Sequence number is used for indicating the sequence number of this load unit section under it, perhaps indicates the sequence number of this load unit in each load unit of the same data stream type of carrying;
Cyclic redundancy check (CRC) is used for described load head is carried out verification.
Each load unit in described video-frequency band, audio section and the data segment also comprises the unit and finishes sign, in order to indicate the end position of this load unit.
Also comprise the hangover indication information in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment.
The present invention provides a kind of multimedia broadcast data sending method in addition, comprising:
Generate broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
Send the described broadcast channel frame that generates by air interface.
The present invention also provides a kind of multimedia broadcast data method of reseptance, comprising:
Receive broadcast channel frame;
Resolve the broadcast channel frame that receives, from each multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
The invention provides a kind of multimedia broadcast data transmission system, comprising: dispensing device and receiving system;
Described dispensing device is used to generate and send broadcast channel frame; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
Described receiving system comprises and is used to receive broadcast channel frame, from the multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
Described multimedia broadcast data dispensing device comprises: comprising: broadcast channel frame generation unit and broadcast channel frame transmitting element;
Described broadcast channel frame generation unit comprises that first generates subelement, is used to generate broadcast channel frame, and sends the broadcast channel frame transmitting element to; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
The broadcast channel frame transmitting element is used to receive the broadcast channel frame that described broadcast channel frame generation unit generates, and sends described broadcast channel frame.
Described broadcast channel frame generation unit also comprises: second generates subelement, be used for comprising the load head, indicate the original position and the load length of this load unit with the load head at described first each load unit that generates each video-frequency band, audio section or the data segment that broadcast channel frame comprised of subelement generation.
Described broadcast channel frame generation unit also comprises: the 4th generates subelement, be used in each load unit of the video-frequency band that broadcast channel frame comprised, audio section and data segment that the described second generation subelement generates, comprising the unit and finish sign, in order to indicate the end position of this load unit.
Described broadcast channel frame generation unit also comprises: the 6th generates subelement, be used for comprising the hangover indication information, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment at the described the 4th paragraph header that generates the video-frequency band that broadcast channel frame comprised, audio section and the data segment of subelement generation.
Described broadcast channel frame generation unit also comprises: the 3rd generates subelement, be used in each load unit of the video-frequency band that broadcast channel frame comprised, audio section and data segment that the described first generation subelement generates, comprising the unit and finish sign, in order to indicate the end position of this load unit.
Described broadcast channel frame generation unit also comprises: the 5th generates subelement, be used for comprising the hangover indication information, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment at the described the 3rd paragraph header that generates the video-frequency band that broadcast channel frame comprised, audio section and the data segment of subelement generation.
A kind of multimedia broadcast data receiving system comprises: comprising: broadcast channel frame receiving element and broadcast channel frame resolution unit;
Described broadcast channel frame receiving element is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit to;
Described broadcast channel frame resolution unit comprises that first resolves subelement, be used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
Described broadcast channel frame resolution unit also comprises: second resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, further parse in each load unit of each video-frequency band, audio section and data segment and parse the load head, initial code according to the indication original position that comprises in the described load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the described load head; And/or
The 3rd resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, also from each load unit of each video-frequency band, audio section and data segment, parse the unit and finish sign, finish the end position that sign is determined each load unit according to described unit; And/or
The 4th resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, also from the paragraph header of each video-frequency band, audio section or data segment, parse and comprise the hangover indication information, know that each load unit in each video-frequency band, audio section and the data segment also comprises described unit and finishes sign.
According to multi-media broadcast data transmission method provided by the invention, in the broadcast channel frame that generates, comprise at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprises the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised; After receiving terminal receives multimedia broadcast data, from multiplexed frame, parse multiplexed sub frame, and according to the information of the load unit quantity that comprises in each video-frequency band, audio section and the data segment paragraph header in the multiplexed sub frame, obtain the load unit data carried by data of respective numbers, parse corresponding video-frequency band, audio section or data segment information.Like this, because receiving terminal is before resolving some video-frequency bands, audio section or data segment, known the video unit quantity (audio unit quantity or data cell quantity) that the video-frequency band (audio section or data segment) of current reception is comprised, thereby the corresponding data that obtains the video unit of respective numbers is decoded.Even mistake occurs receiving and resolve in a certain video-frequency band (audio section or the data segment) process, the load unit quantity that receiving terminal also can be comprised according to quantity and this video-frequency band (audio section or data segment) of the current load unit that has received compares, when only remaining a spot of load unit does not receive, can resolve according to the load unit that has received, simply abandon follow-up load unit and get final product; Thereby avoid abandoning whole video section (audio section or data segment) data, improve the accuracy of receiving terminal decoding.
Description of drawings
Fig. 1 is a Mobile Multimedia Broadcasting information processing schematic diagram in the prior art;
Fig. 2 is for looking the concrete structure schematic diagram of (sound) frequency range in the prior art;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 3 provides for the embodiment of the invention 1;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 4 provides for the embodiment of the invention 2;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 5 provides for the embodiment of the invention 3;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 6 provides for the embodiment of the invention 4;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 7 provides for the embodiment of the invention 5;
The concrete structure schematic diagram of looking (sound) frequency range that Fig. 8 provides for the embodiment of the invention 6;
The multimedia broadcast data transmission system structural representation that Fig. 9 provides for the embodiment of the invention;
The multimedia broadcast data dispensing device structural representation that Figure 10 provides for the embodiment of the invention;
The multimedia broadcast data receiving system structural representation that Figure 11 provides for the embodiment of the invention.
Embodiment
Multimedia broadcast data sending and receiving method provided by the invention is described in detail with specific embodiment below in conjunction with accompanying drawing.
Embodiment 1:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, comprise the load unit quantity information, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised.
Referring to Fig. 3, be example with video (audio frequency) section, define field of increase in the paragraph header of each video (audio frequency) section, called after " load unit quantity information " in prior art.The video unit quantity that this load unit quantity information field comprises in order to indicate corresponding video-frequency band, the data cell quantity that audio frequency unit's quantity that the diaphone frequency range is comprised and corresponding data section are comprised.
After receiving terminal connects broadcast channel frame, from each multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, from the load unit of respective numbers, obtain video data (voice data or other data), parse each video-frequency band, audio section or data segment information.
A preferred example, the length of this load unit quantity information field are the integral words joint, for example are 1 byte, take 8 bits.
Because receiving terminal is before resolving some video-frequency bands, audio section or data segment, according to the load unit quantity information that comprises in the paragraph header, just can accurately learn contained video unit quantity, audio unit quantity and the data cell quantity of video-frequency band, audio section or data segment of current reception in advance, thereby the data of obtaining the load unit of respective numbers are decoded.Improved the accuracy of video-frequency band, audio section and data segment decoding.In addition, even mistake occurs receiving and resolve in a certain video-frequency band (audio section or the data segment) process, the load unit quantity that receiving terminal also can be comprised according to quantity and this video-frequency band (audio section or data segment) of the current load unit that has received compares, when only remaining a spot of load unit does not receive, can resolve according to the load unit that has received, simply abandon follow-up load unit and get final product; Thereby avoid abandoning the whole video segment data, further improve the accuracy of receiving terminal decoding.
Embodiment 2:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, comprise the load unit quantity information, and also comprise the load head in each load unit in each video-frequency band, audio section and data segment, in order to original position and the load length that indicates this load unit.
Referring to Fig. 4, be example with video (audio frequency) section, this embodiment 2 further comprises the load head in each load unit in each video-frequency band, audio section and data segment on the basis of implementation column 1, in order to original position and the load length that indicates this load unit.
Can comprise following field in the load head:
Initial code is used to indicate the original position of a load unit;
Marker bit is used to indicate whether this load unit is last load unit of carrying video, audio frequency or data message;
Loadtype is used to indicate this load unit institute data carried by data stream type; Data stream type comprises video flowing type and/or audio stream type; Concrete video flowing type and audio stream type can be various existing types of the prior art;
Load length, the byte number of video, audio frequency and the data message that is used to indicate this load unit to carry;
Sequence number is used for indicating the sequence number of this load unit section under it, perhaps indicates the sequence number of this load unit in each load unit of the same data stream type of carrying;
Cyclic redundancy check (CRC) is used for described load head is carried out verification.
A preferred example, the load head is according to each field of sequence arrangement of initial code, marker bit, loadtype, load length, sequence number and cyclic redundancy check (CRC).Certainly, should be except initial code as first field, putting in order of all the other each fields can be set arbitrarily, and the present invention does not limit this.
A preferred example, load head take 48 bits altogether, wherein:
Institute's initial code takies 8 bits;
Described marker bit takies 1 bit;
Described loadtype takies 7 bits;
Described load length takies 8 bits;
Described sequence number takies 8 bits;
Described cyclic redundancy check (CRC) takies 16 bits.
The shared bit of above-mentioned each field only is that the present invention does not limit this for example.
Receiving terminal parses the load head from each load unit of each video-frequency band, audio section and data segment, initial code according to the indication original position that comprises in this load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the load head.Thereby guaranteed each load unit of accurate differentiation, and received and resolve by the length of each load unit.When a load unit receives or resolves the appearance mistake, only need abandon this wrong load unit, obtain next load unit according to initial code again, receive and resolve next load unit and get final product, can not cause abandoning whole video section, audio section or the data segment at this wrong load unit place, thereby improved the accuracy of receiving terminal decoding, the corresponding efficiency of transmission that improves multi-medium data.
Embodiment 3:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, comprise the load unit quantity information, and comprise end sign in unit in each load unit in each video-frequency band, audio section and data segment, in order to indicate the end position of this load unit.
Referring to Fig. 5, be example with video (audio frequency) section, this embodiment 3 is further comprise end sign in unit on the basis of implementation column 1 in each load unit in each video-frequency band, audio section and data segment, in order to indicate the end position of this load unit.
It can be to take one of several bytes to set character string that a preferred example, this unit finish sign.
Receiving terminal parses the unit and finishes sign from each load unit of each video-frequency band, audio section and data segment, finish the end position that sign is determined each load unit, the accurate location that has further strengthened each load unit according to the unit.Make when a load unit receives or resolve the appearance mistake, only need abandon this wrong load unit, can not cause abandoning whole video section, audio section or the data segment at this wrong load unit place.
Embodiment 4:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, comprise the load unit quantity information, and also comprise the load head in each load unit in each video-frequency band, audio section and data segment, also comprise the unit in each load unit in each video-frequency band, audio section and data segment and finish sign.
Referring to Fig. 6, be example with video (audio frequency) section, this embodiment 4 further comprises unit end sign in each load unit in each video-frequency band, audio section and data segment on the basis of implementation column 2.
It can be to take one of several bytes to set character string that a preferred example, this unit finish sign.
According to this embodiment, receiving terminal can be known each video-frequency band, the load unit quantity information that audio section or data segment comprised, thereby the data of obtaining the load unit of respective numbers are decoded.Improved the accuracy of video-frequency band, audio section and data segment decoding;
Further, receiving terminal can also accurately be located the original position of each load unit according to the initial code in the load head, according to the load length that comprises in the load head, obtains the data volume of respective length and resolves load unit.Thereby guaranteed that the corresponding data that accurately obtains each load unit receives and resolves;
Further, receiving terminal also finishes sign according to the unit that parses, and determines the end position of each load unit.
Embodiment 5:
Comprise load unit quantity information and hangover indication information in the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, the hangover indication information finishes sign in order to indicate each load unit in each video-frequency band, audio section and the data segment also to comprise described unit; And comprise the unit in each load unit in each video-frequency band, audio section and data segment and finish sign.
Referring to Fig. 7, with video (audio frequency) section is example, this embodiment 5 is further comprising hangover indication information field in the paragraph header of each video-frequency band, audio section or data segment on the basis of implementation column 3, whether this hangover indication information comprises described unit end sign in order to indicate each load unit in each video-frequency band, audio section and the data segment.
A preferred example, this hangover indication information fields account are with 1 bit, for example:
Represent also to comprise in each load unit in each video-frequency band, audio section or the data segment unit with " 1 " and finish sign;
Represent not comprise in each load unit in each video-frequency band, audio section or the data segment unit with " 0 " and finish sign.
After receiving terminal receives the paragraph header of each video-frequency band, audio section or data segment, be " 1 " if parse hangover indication information field, know that promptly also comprising the unit in each load unit in each video-frequency band, audio section or the data segment finishes sign, when resolving each load unit of each video-frequency band, audio section or data segment, finish the end position that sign is determined load unit data according to the unit, thereby correctly receive the data and the parsing of each load unit.Be " 0 " if parse hangover indication information field, know that promptly not comprising the unit in each load unit in each video-frequency band, audio section or the data segment finishes sign.
Embodiment 6:
In the paragraph header of each video-frequency band, audio section or the data segment that each multiplexed sub frame comprised of broadcast channel frame, comprise load unit quantity information and hangover indication information, comprise the load head in each load unit in each video-frequency band, audio section and data segment, also comprise the unit in each load unit in each video-frequency band, audio section and data segment and finish sign.
Referring to Fig. 8, with video (audio frequency) section is example, this embodiment 6 is further comprising hangover indication information field in the paragraph header of each video-frequency band, audio section or data segment on the basis of implementation column 4, whether this hangover indication information comprises described unit end sign in order to indicate each load unit in each video-frequency band, audio section and the data segment.
More than with specific embodiment the sending and receiving method of multimedia broadcast data is described in detail.The sending and receiving method of the multimedia broadcast data that provides according to the above embodiment of the present invention, the present invention also provides a kind of multimedia broadcast data dispensing device, multimedia broadcast data receiving system and multimedia broadcast data transmission system.
Referring to Fig. 9, the multimedia broadcast data transmission system structural representation for the embodiment of the invention provides comprises: dispensing device 10 and receiving system 20;
Dispensing device 10 is used to generate and send broadcast channel frame; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised.
Dispensing device 10 specifically comprises: broadcast channel frame generation unit 101 and broadcast channel frame transmitting element 102; Wherein:
Broadcast channel frame generation unit 101 is used to generate broadcast channel frame, and sends broadcast channel frame transmitting element 102 to;
Broadcast channel frame transmitting element 102 is used to receive the broadcast channel frame that described broadcast channel frame generation unit 101 generates, and sends described broadcast channel frame.
Receiving system 20 comprises and is used to receive broadcast channel frame, from the multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
Receiving system 20 specifically comprises: broadcast channel frame receiving element 201 and broadcast channel frame resolution unit 202; Wherein:
Broadcast channel frame receiving element 201 is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit 202 to;
Broadcast channel frame resolution unit 202 is used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parses each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame.
The present invention also provides a kind of multimedia broadcast data dispensing device 10, and its structural representation comprises as shown in figure 10: broadcast channel frame generation unit 101 and broadcast channel frame transmitting element 102; Wherein:
Broadcast channel frame generation unit 101 is used to generate broadcast channel frame, and sends broadcast channel frame transmitting element 102 to;
Broadcast channel frame transmitting element 102 is used to receive the broadcast channel frame that described broadcast channel frame generation unit 101 generates, and sends described broadcast channel frame.
Broadcast channel frame generation unit 101 comprises that first generates subelement 1011, is used to generate broadcast channel frame, and sends broadcast channel frame transmitting element 102 to; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised.
Broadcast channel frame generation unit 101 may comprise that also second generates subelement 1012; Second generates subelement 1012 is used for comprising the load head at first each load unit that generates each video-frequency band, audio section or the data segment that broadcast channel frame comprised of subelement 1011 generations, indicates the original position and the load length of this load unit with the load head.
Broadcast channel frame generation unit 101 may comprise that also the 3rd generates subelement 1013; The 3rd generates subelement 1013 is used for comprising unit end sign in each load unit of the video-frequency band that broadcast channel frame comprised, audio section and data segment that the first generation subelement 1011 generates, in order to indicate the end position of this load unit.
Broadcast channel frame generation unit 101 may comprise that also the 4th generates subelement 1014; The 4th generates subelement 1014 is used for comprising unit end sign in each load unit of the video-frequency band that broadcast channel frame comprised, audio section and data segment that the second generation subelement 1012 generates, in order to indicate the end position of this load unit.
Broadcast channel frame generation unit 101 may comprise that also the 5th generates subelement 1015; The 5th generates subelement 1015 is used for comprising the hangover indication information at the 3rd paragraph header that generates the video-frequency band that broadcast channel frame comprised, audio section and the data segment of subelement 1013 generations, also comprises described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment.
Broadcast channel frame generation unit 101 may comprise that also the 6th generates subelement 1016; The 6th generates subelement 1016 is used for comprising the hangover indication information at the 4th paragraph header that generates the video-frequency band that broadcast channel frame comprised, audio section and the data segment of subelement 1014 generations, also comprises described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment.
The present invention also provides a kind of multimedia broadcast data receiving system 20, and its structural representation comprises as shown in figure 11: broadcast channel frame receiving element 201 and broadcast channel frame resolution unit 202; Wherein:
Broadcast channel frame receiving element 201 is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit 202 to;
Broadcast channel frame resolution unit 202 is used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parses each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame.
Broadcast channel frame resolution unit 202 comprises that first resolves subelement 2021, be used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
Broadcast channel frame resolution unit 202 may comprise that also second resolves subelement 2022, be used for resolving video-frequency band, audio section and the data segment information that subelement 2021 parses according to first, further parse in each load unit of each video-frequency band, audio section and data segment and parse the load head, initial code according to the indication original position that comprises in the described load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the described load head.
Broadcast channel frame resolution unit 202 may comprise that also the 3rd resolves subelement 2023, be used for resolving video-frequency band, audio section and the data segment information that subelement 2021 parses according to first, also from each load unit of each video-frequency band, audio section and data segment, parse the unit and finish sign, finish the end position that sign is determined each load unit according to described unit.
Broadcast channel frame resolution unit 202 may comprise that also the 4th resolves subelement 2024, be used for resolving video-frequency band, audio section and the data segment information that subelement 2021 parses according to first, also from the paragraph header of each video-frequency band, audio section or data segment, parse and comprise the hangover indication information, know that each load unit in each video-frequency band, audio section and the data segment also comprises described unit and finishes sign.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (24)
1. a multi-media broadcast data transmission method is characterized in that, comprising:
Generate and send broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
Receive described broadcast channel frame, from each multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
2. the method for claim 1 is characterized in that, each load unit in described video-frequency band, audio section and the data segment also comprises the load head, in order to original position and the load length that indicates this load unit.
3. method as claimed in claim 2 is characterized in that, comprises following field in the described load head:
Initial code is used to indicate the original position of a load unit;
Marker bit is used to indicate whether this load unit is last load unit of carrying video, audio frequency or data message;
Loadtype is used to indicate this load unit institute data carried by data stream type;
Load length, the byte number of video, audio frequency and the data message that is used to indicate this load unit to carry;
Sequence number is used for indicating the sequence number of this load unit section under it, perhaps indicates the sequence number of this load unit in each load unit of the same data stream type of carrying;
Cyclic redundancy check (CRC) is used for described load head is carried out verification.
4. method as claimed in claim 1 or 2 is characterized in that, each load unit in described video-frequency band, audio section and the data segment also comprises the unit and finishes sign, in order to indicate the end position of this load unit.
5. method as claimed in claim 4, it is characterized in that, also comprise the hangover indication information in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment.
6. a multimedia broadcast data sending method is characterized in that, comprising:
Generate broadcast channel frame, described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
Send the described broadcast channel frame that generates by air interface.
7. method as claimed in claim 6 is characterized in that, each load unit in described video-frequency band, audio section and the data segment also comprises the load head, in order to original position and the load length that indicates this load unit.
8. method as claimed in claim 7 is characterized in that, comprises following field in the described load head:
Initial code is used to indicate the original position of a load unit;
Marker bit is used to indicate whether this load unit is last load unit of carrying video, audio frequency or data message;
Loadtype is used to indicate this load unit institute data carried by data stream type;
Load length, the byte number of video, audio frequency and the data message that is used to indicate this load unit to carry;
Sequence number is used for indicating the sequence number of this load unit section under it, perhaps indicates the sequence number of this load unit in each load unit of the same data stream type of carrying;
Cyclic redundancy check (CRC) is used for described load head is carried out verification.
9. as claim 6 or 7 described methods, it is characterized in that each load unit in described video-frequency band, audio section and the data segment also comprises the unit and finishes sign, in order to indicate the end position of this load unit.
10. method as claimed in claim 9, it is characterized in that, also comprise the hangover indication information in the paragraph header of each video-frequency band, audio section or data segment that each multiplexed sub frame comprised, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment.
11. a multimedia broadcast data method of reseptance is characterized in that, comprising:
Receive broadcast channel frame;
Resolve the broadcast channel frame that receives, from each multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
12. method as claimed in claim 11 is characterized in that, also comprises:
From each load unit of each video-frequency band, audio section and data segment, parse the load head, initial code according to the prompting original position that comprises in the described load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the described load head.
13. method as claimed in claim 12 is characterized in that, also comprises:
From each load unit of each video-frequency band, audio section and data segment, parse the unit and finish sign, finish the end position that sign is determined each load unit according to described unit.
14. method as claimed in claim 13 is characterized in that, also comprises:
From the paragraph header of each video-frequency band, audio section or data segment, parse the hangover indication information that comprises, determine and comprise the unit in each load unit of each video-frequency band, audio section or data segment and finish sign.
15. a multimedia broadcast data transmission system is characterized in that, comprising: dispensing device and receiving system;
Described dispensing device is used to generate and send broadcast channel frame; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
Described receiving system comprises and is used to receive broadcast channel frame, from the multiplexed frame of described broadcast channel frame, parse each multiplexed sub frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
16. system as claimed in claim 15 is characterized in that, described dispensing device comprises: broadcast channel frame generation unit and broadcast channel frame transmitting element; Wherein:
The broadcast channel frame generation unit is used to generate broadcast channel frame, and sends the broadcast channel frame transmitting element to;
The broadcast channel frame transmitting element is used to receive the broadcast channel frame that described broadcast channel frame generation unit generates, and sends described broadcast channel frame to receiving system;
Described receiving system comprises: broadcast channel frame receiving element and broadcast channel frame resolution unit; Wherein:
The broadcast channel frame receiving element is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit to;
The broadcast channel frame resolution unit is used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, parses each video-frequency band, audio section or the data segment information that are comprised from each multiplexed sub frame.
17. a multimedia broadcast data dispensing device is characterized in that, comprising: broadcast channel frame generation unit and broadcast channel frame transmitting element;
Described broadcast channel frame generation unit comprises that first generates subelement, is used to generate broadcast channel frame, and sends the broadcast channel frame transmitting element to; Described broadcast channel frame comprises at least one multiplexed frame, described multiplexed frame comprises at least one multiplexed sub frame, described multiplexed sub frame comprises video-frequency band, audio section or data segment at least, comprise the load unit quantity information in the paragraph header of each video-frequency band, audio section or the data segment that is comprised, in order to the video unit quantity of indicating corresponding video-frequency band to comprise, the data cell quantity that audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised;
The broadcast channel frame transmitting element is used to receive the broadcast channel frame that described broadcast channel frame generation unit generates, and sends described broadcast channel frame.
18. dispensing device as claimed in claim 17 is characterized in that, described broadcast channel frame generation unit also comprises:
Second generates subelement, be used for comprising the load head, indicate the original position and the load length of this load unit with the load head at described first each load unit that generates each video-frequency band, audio section or the data segment that broadcast channel frame comprised of subelement generation.
19. dispensing device as claimed in claim 18 is characterized in that, described broadcast channel frame generation unit also comprises:
The 4th generates subelement, is used for comprising the unit in each load unit of the video-frequency band that broadcast channel frame comprised, audio section and data segment that the described second generation subelement generates and finishes sign, in order to indicate the end position of this load unit.
20. dispensing device as claimed in claim 19 is characterized in that, described broadcast channel frame generation unit also comprises:
The 6th generates subelement, be used for comprising the hangover indication information, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment at the described the 4th paragraph header that generates the video-frequency band that broadcast channel frame comprised, audio section and the data segment of subelement generation.
21. dispensing device as claimed in claim 17 is characterized in that, described broadcast channel frame generation unit also comprises:
The 3rd generates subelement, is used for comprising the unit in each load unit of the video-frequency band that broadcast channel frame comprised, audio section and data segment that the described first generation subelement generates and finishes sign, in order to indicate the end position of this load unit.
22. dispensing device as claimed in claim 21 is characterized in that, described broadcast channel frame generation unit also comprises:
The 5th generates subelement, be used for comprising the hangover indication information, also comprise described unit end sign in order to indicate each load unit in described video-frequency band, audio section and the data segment at the described the 3rd paragraph header that generates the video-frequency band that broadcast channel frame comprised, audio section and the data segment of subelement generation.
23. a multimedia broadcast data receiving system is characterized in that, comprising: broadcast channel frame receiving element and broadcast channel frame resolution unit;
Described broadcast channel frame receiving element is used to receive broadcast channel frame, and sends described broadcast channel frame resolution unit to;
Described broadcast channel frame resolution unit comprises that first resolves subelement, be used for parsing each multiplexed sub frame from the multiplexed frame of described broadcast channel frame, the load unit quantity information that comprises in the paragraph header according to video-frequency band, audio section or data segment that each multiplexed sub frame comprised, determine the data cell quantity that video unit quantity that corresponding video-frequency band comprises, audio unit quantity that the diaphone frequency range is comprised and corresponding data section are comprised, parse each video-frequency band, audio section or data segment information.
24. receiving system as claimed in claim 23 is characterized in that, described broadcast channel frame resolution unit also comprises:
Second resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, further parse in each load unit of each video-frequency band, audio section and data segment and parse the load head, initial code according to the indication original position that comprises in the described load head is distinguished each load unit, and, obtain the data volume of respective length and resolve this load unit according to the load length that comprises in the described load head; And/or
The 3rd resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, also from each load unit of each video-frequency band, audio section and data segment, parse the unit and finish sign, finish the end position that sign is determined each load unit according to described unit; And/or
The 4th resolves subelement, be used for resolving video-frequency band, audio section and the data segment information that subelement parses according to described first, also from the paragraph header of each video-frequency band, audio section or data segment, parse and comprise the hangover indication information, know that each load unit in each video-frequency band, audio section and the data segment also comprises described unit and finishes sign.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101198908A CN101110960A (en) | 2007-08-02 | 2007-08-02 | Multimedia broadcast data transmission method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101198908A CN101110960A (en) | 2007-08-02 | 2007-08-02 | Multimedia broadcast data transmission method, device and system |
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| CN101110960A true CN101110960A (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101198908A Pending CN101110960A (en) | 2007-08-02 | 2007-08-02 | Multimedia broadcast data transmission method, device and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101272220B (en) * | 2008-04-30 | 2010-05-12 | 中兴通讯股份有限公司 | Data resolution method |
| CN101330398B (en) * | 2008-07-25 | 2010-06-16 | 中兴通讯股份有限公司 | Method for transmitting business data flow |
| WO2013034073A1 (en) * | 2011-09-05 | 2013-03-14 | 中国移动通信集团公司 | 3d video code transmission method and device |
| CN109257688A (en) * | 2018-07-23 | 2019-01-22 | 东软集团股份有限公司 | Audio distinguishes method, apparatus, storage medium and electronic equipment |
-
2007
- 2007-08-02 CN CNA2007101198908A patent/CN101110960A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101272220B (en) * | 2008-04-30 | 2010-05-12 | 中兴通讯股份有限公司 | Data resolution method |
| CN101330398B (en) * | 2008-07-25 | 2010-06-16 | 中兴通讯股份有限公司 | Method for transmitting business data flow |
| WO2013034073A1 (en) * | 2011-09-05 | 2013-03-14 | 中国移动通信集团公司 | 3d video code transmission method and device |
| CN109257688A (en) * | 2018-07-23 | 2019-01-22 | 东软集团股份有限公司 | Audio distinguishes method, apparatus, storage medium and electronic equipment |
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