CN101309425A - Deplexing method, apparatus and system - Google Patents
Deplexing method, apparatus and system Download PDFInfo
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Abstract
The invention discloses a de-multiplexing method, a system and a device. The method comprises the steps that the synchronization bytes are searched in the multiplexing stream packet of the multiplexing code stream, and the multiplexing stream packet can be converted into a complex frame according to the synchronization bytes; the identification of the service which is needed to be broadcasted can be obtained, and a controlling information table can be obtained from the complex frame which can be gotten by conversion; the complex frame identification of the complex frame in which a complex sub frame is positioned and which corresponds to the service and the serial number of the complex sub frame corresponding to the service in the corresponding complex frame can be obtained according to the saved controlling information table; the obtained complex frame corresponding to the identification can be buffered, the corresponding complex sub frame can be obtained from the buffered complex frame according to the obtained serial number, and the video unit and/or the audio frequency unit of the service can be obtained from the obtained complex sub frame. By the utilization of the de-multiplexing method, the system and the device, the de-multiplexing restoration operation can be performed to the complex code stream output by the multiplexer or the remultiplexer, the effective verification mechanism can be supplied for the output code stream of the multiplexer, and the de-multiplexing method, the system and the device are in favor of malfunction positioning and troubleshooting of the terminal and/or the system.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of Deplexing method, device and system.
Background technology
At present, Mobile Multimedia Broadcasting (mobile TV) has a plurality of industry standards and deposits in the world, wherein, and China Mobile multimedia broadcasting (China Multimedia MobileBroadcasting, CMMB) be the mobile TV industry standard of Chinese independent research, and be subjected to attention widely.This standard comprises a plurality of parts, the multiplexing normalized definition in the middle of part 2 the multiplexed sub frame structure of video, audio frequency, data and control information in the mobile multimedia broadcast system and the structure of the multiplexed frame formed by a plurality of multiplexed sub frames.
Multimedia Mobile broadcasting is mainly concerned with multiplexer and re-multiplexer, wherein, multiplexer is a kind of device of realizing the multi-channel program data multiplex is become one road output code flow, generally, multiplexer be input as multichannel RTP (Real-Time Transmissionprotocol, RTP) Bao audio/video flow, through multiplexing configuration, one or more Asynchronous Serial Interfaces (Asynchronous serial interface is passed through in the synthetic back of multichannel data, ASI) interface export one the tunnel packing after multiplex stream (packetized Multiplexing Stream, PMS); Re-multiplexer is a kind of device of realizing the multi-channel program data are multiplexed into again one road output code flow, the input of re-multiplexer generally can be the audio/video flow of multichannel RTP bag, it also can be data flow by ASI interface input multichannel PMS bag, through multiplexing again configuration, one road PMS stream is exported by one or more ASI interfaces in the synthetic back of multichannel data.
Yet, demultiplexing for the data of multiplexer or re-multiplexer output, do not propose effective proof scheme at present as yet, this can't carry out the correctness judgement to the output of multiplexer or re-multiplexer with regard to causing, therefore can't be to the effective guarantee of providing of quality of service and user experience.
Although can utilize the output code flow of CMMB terminal indirect verification multiplexer, the multi-medium data of terminal plays has experienced many transmission links, just is difficult to position and analyze in case go wrong, and is unfavorable for troubleshooting of faults.
As can be seen, exist owing to carrying out demultiplexing, so can't effectively verify the problem of the correctness of output code flow in the correlation technique the output of multiplexer or re-multiplexer.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of demultiplexing mechanism, with in the mobile multimedia broadcast system that solves correlation technique because the problem that can't judge the correctness of the multi-medium data play that can't carry out that demultiplexing was caused to the output of multiplexer or re-multiplexer.
According to embodiments of the invention, a kind of Deplexing method is provided, be applied to mobile multimedia broadcast system.
This method comprises: search for sync byte in the multiplex stream bag of multiplexing code stream, according to sync byte the multiplex stream bag is converted to multi-frame; Obtain the sign of the business that needs broadcast, and from the multi-frame that is converted to, obtain the control information table; According to the control information table that obtains, obtain the multi-frame sign and the sequence number of professional pairing multiplexed sub frame in corresponding multi-frame of the multi-frame at the corresponding multiplexed sub frame place of business; From multi-frame, obtain corresponding multiplexed sub frame according to the sequence number of obtaining, and from the multiplexed sub frame that obtains, obtain professional video unit and/or audio unit.
Wherein, obtain being treated to of control information table: the multi-frame 0 from the multi-frame that is converted to obtains control information, and the control information table comprises multiplexing allocation list at least.
After having obtained the control information table, this method can further comprise: preserve the control information table that obtains.
In addition, after having obtained multi-frame sign, this method can further comprise: the pairing multi-frame of the sign that buffer memory obtains, and judge buffer memory multi-frame in whether comprise and be used to identify the mark that the control information table is updated; Again obtain and preserve the control information table under the situation that is being judged as, and utilize the control information table that obtains again that the control information table of former preservation is upgraded.
In addition, the processing of obtaining video unit and audio unit is specially: parse video-frequency band and/or audio section from the multiplexed sub frame that obtains, and obtain video unit according to video-frequency band, obtain audio unit according to audio section.
Preferably, after obtaining video unit and audio unit, this method can further comprise: according to video unit and audio unit play service, and determine whether professional multiplexed sub frame is correct.
According to another embodiment of the present invention, provide a kind of Deplexing method, this method can be applicable to mobile multimedia broadcast system.
This method comprises: search for sync byte in the multiplex stream bag of multiplexing code stream, according to sync byte the multiplex stream bag is converted to multi-frame; Obtain the sign of the business that needs broadcast, and from the multi-frame that is converted to, obtain and preserve the control information table; Obtain the multi-frame sign and the sequence number of professional pairing multiplexed sub frame in corresponding multi-frame of the multi-frame at the corresponding multiplexed sub frame place of business according to the control information table of preserving; The multi-frame that buffer memory obtains identifies pairing multi-frame, and obtains corresponding multiplexed sub frame according to the sequence number of obtaining from the multi-frame of buffer memory, and obtains professional video unit and/or audio unit from the multiplexed sub frame that obtains.
According to another embodiment of the present invention, provide a kind of Deplexing apparatus, this device can be applicable to mobile multimedia broadcast system.
This device comprises: field programmable gate array is used for searching for sync byte at the multiplex stream bag of multiplexing code stream, and according to sync byte the multiplex stream bag is converted to multi-frame, and carry out the buffer memory of multi-frame under the control of central processing unit; Central processing unit, be used to obtain the sign of the business that needs play, and from the multi-frame that is converted to, obtain and preserve the control information table, and according to the control information table of preserving, obtain the multi-frame sign and the sequence number of professional pairing multiplexed sub frame in corresponding multi-frame of the multi-frame at the corresponding multiplexed sub frame place of business, and the sequence number of obtaining from the multi-frame by the field programmable gate array buffer memory obtains corresponding multiplexed sub frame from the multi-frame of buffer memory, obtains professional video unit and/or audio unit from the multiplexed sub frame that obtains.
Wherein, central processing unit obtain the control information table processing can for: the multi-frame 0 from the multi-frame that is converted to obtains control information, and the control information table comprises multiplexing allocation list at least.
Central processing unit also can be used for: at the scene after the pairing multi-frame of sign that the programmable gate array buffer memory obtains, judge in the head of multi-frame of buffer memory whether comprise and be used to identify the mark that the control information table is updated, and obtain and preserve the control information table under the situation that is again being judged as, and utilize the control information table that obtains again that the control information table of former preservation is upgraded.
In addition, the processing that central processing unit obtains video unit and audio unit is specially: central processing unit parses video-frequency band and/or audio section from the multiplexed sub frame that obtains, and obtains video unit according to video-frequency band, obtains audio unit according to audio section.
According to still a further embodiment, provide a kind of demultiplexing system, be applied to mobile multimedia broadcast system.
This demultiplexing system comprises: Deplexing apparatus, be connected at least one multiplexer and/or at least one re-multiplexer, and this Deplexing apparatus comprises: field programmable gate array, be used to receive multiplexing code stream from multiplexer and/or re-multiplexer, in the multiplex stream bag of multiplexing code stream, search for sync byte, and the multiplex stream bag is converted to multi-frame, and under the control of central processing unit, carry out the buffer memory of multi-frame according to sync byte; Central processing unit, be used to obtain the sign of the business that needs play, and from the multi-frame that is converted to, obtain and preserve the control information table, and according to the control information table of preserving, obtain the multi-frame sign and the sequence number of professional pairing multiplexed sub frame in corresponding multi-frame of the multi-frame at the corresponding multiplexed sub frame place of business, and the sequence number of obtaining from the multi-frame by the field programmable gate array buffer memory obtains corresponding multiplexed sub frame from the multi-frame of buffer memory, obtains professional video unit and/or audio unit from the multiplexed sub frame that obtains.In addition, this system also comprises: player, be connected to Deplexing apparatus, and be used for video unit and/or audio unit play service according to business.
By technique scheme of the present invention, can carry out the demultiplexing reduction to the multiplexing code stream of multiplexer or re-multiplexer output, for the output code flow of multiplexer or re-multiplexer provides a kind of effective authentication mechanism.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the Deplexing method of the inventive method embodiment;
Fig. 2 is the block diagram according to the Deplexing apparatus of apparatus of the present invention embodiment;
Fig. 3 is the process chart of the Deplexing apparatus according to apparatus of the present invention embodiment when carrying out demultiplexing;
Fig. 4 is the block diagram of structure example of the demultiplexing system of system according to the invention embodiment;
Fig. 5 is the schematic diagram of the demultiplexing processing procedure in the demultiplexing system of system according to the invention embodiment.
Embodiment
Method embodiment
In the present embodiment, provide a kind of Deplexing method, be applied to mobile multimedia broadcast system.
As shown in Figure 1, comprise according to the Deplexing method of present embodiment: step S102, in (after the packing) multiplex stream bag of multiplexing code stream, search for sync byte, according to sync byte the multiplex stream bag is converted to multi-frame; Step S104 obtains the sign of the business that needs broadcast, and obtain the control information table from the multi-frame that is converted to; Step S106, the multi-frame that obtains the multi-frame at the corresponding multiplexed sub frame place of business according to the control information table that obtains identifies and the sequence number of professional pairing multiplexed sub frame in corresponding multi-frame; Step S108 obtains corresponding multiplexed sub frame according to the sequence number of obtaining from multi-frame, and obtains professional video unit and/or audio unit from the multiplexed sub frame that obtains.
Wherein, obtain being treated to of control information table: the multi-frame 0 from the multi-frame that is converted to obtains control information, and the control information table comprises multiplexing allocation list at least.
After having obtained the control information table, this method can further comprise: preserve the control information table that obtains.Like this, after can obtain the multi-frame sign according to the control information table of preserving.
In addition, after having obtained multi-frame sign, this method can further comprise: the multi-frame that buffer memory obtains identifies pairing multi-frame, and judge buffer memory multi-frame in whether comprise and be used to identify the mark that the control information table is updated; Again obtain and preserve the control information table under the situation that is being judged as, and utilize the control information table that obtains again that the control information table of former preservation is upgraded.And also the multi-frame that obtains of buffer memory does not identify pairing multi-frame, and directly searches corresponding multi-frame and carry out the judgement of update mark.
In addition, the processing of obtaining video unit and audio unit is specially: parse video-frequency band and/or audio section from the multiplexed sub frame that obtains, and obtain video unit according to video-frequency band, obtain audio unit according to audio section.
Preferably, after obtaining video unit and audio unit, this method can further comprise: play this business according to video unit and/or audio unit, and determine whether professional multiplexed sub frame is correct.
Device embodiment
In the present embodiment, provide a kind of Deplexing apparatus, this device can be applicable to mobile multimedia broadcast system.
As shown in Figure 2, Deplexing apparatus according to present embodiment comprises: FPGA 202, be used for searching for sync byte, and the multiplex stream bag be converted to multi-frame, and under the control of central processing unit 204 (CPU), carry out the buffer memory of multi-frame according to sync byte at the multiplex stream bag of multiplexing code stream; Central processing unit 204, be used to obtain the sign of the business that needs play, and from the multi-frame that is converted to, obtain and preserve the control information table, and according to the control information table of preserving, obtain the multi-frame sign of the multi-frame at the corresponding multiplexed sub frame place of business, and the sequence number of professional pairing multiplexed sub frame in corresponding multi-frame, and the sequence number of obtaining from the multi-frame by FPGA 202 buffer memorys is obtained corresponding multiplexed sub frame from the multi-frame of buffer memory, from the multiplexed sub frame that obtains, obtain professional video unit and/or audio unit, that is, finish the demultiplexing function jointly by CPU 204 and FPGA 202.
Wherein, CPU 204 obtain the control information table processing can for: the multi-frame 0 from the multi-frame that is converted to obtains control information, and the control information table comprises multiplexing allocation list at least.
In addition, the processing that CPU 204 obtains video unit and audio unit is specially: CPU204 from the multiplexed sub frame that obtains, parse video-frequency band and and/or audio section, and obtain video unit according to video-frequency band, obtain audio unit according to audio section.
Preferably, as shown in Figure 5, this Deplexing apparatus can also further comprise hardware and bottom layer driving.
That is to say that the FPGA in the Deplexing apparatus externally inserts the ASI code stream, and finish the work of from multiplexing code stream, extracting multi-frame; And CPU externally adopts 100M Fast Ethernet mouth, can be used for the transmission of multi-medium data, and finishes the work that demultiplexing is handled, and multi-frame is resolved to multiplexed sub frame, and multiplexed sub frame is resolved to the discernible data of player.
Preferably, in this device, adopt data/address bus to connect between CPU and the FPGA, thereby make the transfer of data between CPU and the FPGA very convenient.
As shown in Figure 3, when carrying out demultiplexing, the processing procedure of this device is as follows:
Step (1) FPGA searches for sync byte from the PMS bag of multiplexing code stream, and converts the PMS bag to multi-frame, and CPU reads multi-frame 0 data from FPGA, the various control information tables that comprise multiplexing allocation list in the multi-frame 0 are kept at this locality;
Step (2) CPU obtains the traffic ID that needs checking to play from player, and the multi-frame ID and the sequence number of this multiplexed sub frame in multi-frame of searching for the multiplexed sub frame place multi-frame of this business correspondence according to the traffic ID that gets access in multiplexing allocation list;
Step (3) CPU is with multi-frame ID notice FPGA, and FPGA filters the multi-frame after changing, and the multi-frame of CPU needs is put into the buffering area of FPGA;
Step (4) CPU reads the data of required multi-frame from FPGA;
Step (5) is if whether various control information tables are judged in the update mark of CPU from the multi-frame head upgrades, then execution in step (6); Otherwise execution in step (7);
Step (6) is notified FPGA to switch to again and is read multi-frame 0, upgrade the local control information table of preserving with the control information table in the multi-frame 0;
Step (7) is found out corresponding multiplexed sub frame according to the sequence number of multiplexed sub frame in multi-frame;
Step (8) and (9) parse video-frequency band, audio section from multiplexed sub frame, and further parse video unit, audio unit from video-frequency band;
Step (9) and (10) CPU send to player with video unit, audio unit data with the agreement of player approval and form and play, and the resolution data paragraph header.
By using this device, just can be based on the multi-frame structure that defines in the agreement, can carry out one road code stream multiplexing and by ASI output to multi-channel program to multiplexer or re-multiplexer and carry out demultiplexing, like this, before modulate emission, just can verify it is its requirement that does not meet multiplexing standard before this program stream, thereby guarantee quality of service.
System embodiment
In the present embodiment, provide a kind of demultiplexing system, be applied to mobile multimedia broadcast system.
As shown in Figure 4, demultiplexing system according to present embodiment comprises: Deplexing apparatus 402, be connected at least one multiplexer and/or at least one re-multiplexer, and the structure of this Deplexing apparatus can be as shown in Figure 2, comprise: FPGA, be used to receive multiplexing code stream from multiplexer and/or re-multiplexer, in the multiplex stream bag of multiplexing code stream, search for sync byte, and the multiplex stream bag is converted to multi-frame, and under the control of central processing unit, carry out the buffer memory of multi-frame according to sync byte; Central processing unit, be used to obtain the sign of the business that needs play, and from the multi-frame that is converted to, obtain and preserve the control information table, and according to the control information table of preserving, obtain the multi-frame sign and the sequence number of professional pairing multiplexed sub frame in corresponding multi-frame of the multi-frame at the corresponding multiplexed sub frame place of business, and the sequence number of obtaining from the multi-frame by the FPGA buffer memory obtains corresponding multiplexed sub frame from the multi-frame of buffer memory, obtains professional video unit and audio unit from the multiplexed sub frame that obtains.In addition, this system also comprises: player 404, be connected to Deplexing apparatus, and be used for video unit and audio unit play service according to business.
As shown in Figure 4, this system can further include: encoder 406, multiplexer 408, modulator 410, transmitter 412, portable terminal 414.
Only show the situation that Deplexing apparatus 402 is connected with multiplexer 408 among Fig. 4, in actual applications, Deplexing apparatus 402 can be connected with at least one multiplexer and/or at least one re-multiplexer, to carry out demultiplexing, just video unit behind the demultiplexing and/or audio unit and be reduced into the data format that can play.
Preferably, Deplexing apparatus (demodulation multiplexer) can adopt the ASI input interface, calmly can be directly with a plurality of ASI code stream output interfaces of multiplexer or re-multiplexer in one be connected, and realize supervising when can not influence the modulate emission of multiplexing code stream to multiplexer or re-multiplexer output code flow.Adopt Real-time Transport Protocol to come transmitting multimedia data between Deplexing apparatus and the player, on Deplexing apparatus, start the RTSP service, wait for the request message of player, after request message is confirmed, start the Deplexing apparatus task by the RTSP service multi-medium data of asking is sent to player, its operation principle and data flow are as shown in Figure 5.
In sum, by technical scheme of the present invention, can carry out the demultiplexing reduction to the multiplexing code stream of multiplexer or re-multiplexer output, can in personal computer (PC), supervise in real time any one road program data in the multiplexing code stream, intuitively, fast, verify the correctness of CMMB standard multiplexer output code flow accurately, for the output code flow of multiplexer provides a kind of effective authentication mechanism, and, when breaking down, CMMB terminal and/or CMMB system can occur in headend equipment or occur in transmission link by quick positioning question, the effectively convenient investigation of the system failure, therefore, the present invention can be used as a kind of testing authentication instrument of multiplexer, and is widely used in broadcast television industry.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.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 (12)
1. a Deplexing method is applied to mobile multimedia broadcast system, it is characterized in that, described method comprises:
In the multiplex stream bag of multiplexing code stream, search for sync byte, described multiplex stream bag is converted to multi-frame according to described sync byte;
Obtain the sign of the business that needs broadcast, and from the described multi-frame that is converted to, obtain the control information table;
Obtain the multi-frame sign and the sequence number of the pairing described multiplexed sub frame of described business in corresponding multi-frame of the multi-frame at the corresponding multiplexed sub frame place of described business according to the described control information table that obtains;
From multi-frame, obtain corresponding multiplexed sub frame according to the described sequence number of obtaining, and from the described multiplexed sub frame that obtains, obtain the video unit and/or the audio unit of described business.
2. method according to claim 1 is characterized in that, obtains being treated to of described control information table:
Multi-frame 0 from the described multi-frame that is converted to obtains described control information, and described control information table comprises multiplexing allocation list at least.
3. method according to claim 1 is characterized in that, after having obtained described control information table, further comprises:
The described control information table that preservation is obtained.
4. method according to claim 1 is characterized in that, after having obtained the multi-frame sign of described multi-frame, further comprises:
The pairing multi-frame of the sign of the described business that buffer memory obtains, and judge in the head of described multi-frame of buffer memory whether comprise and be used to identify the mark that described control information table is updated;
Again obtain and preserve the control information table under the situation that is being judged as, and utilize the control information table that obtains again that the control information table of former preservation is upgraded.
5. method according to claim 1 is characterized in that, the processing of obtaining described video unit and described audio unit is specially:
From the multiplexed sub frame that obtains, parse video-frequency band and/or audio section, and obtain described video unit, obtain described audio unit according to described audio section according to described video-frequency band.
6. method according to claim 1 is characterized in that, after obtaining described video unit and described audio unit, further comprises:
Play described business according to described video unit and/or described audio unit, and determine whether the multiplexed sub frame of described business is correct.
7. a Deplexing method is applied to mobile multimedia broadcast system, it is characterized in that, described method comprises:
In the multiplex stream bag of multiplexing code stream, search for sync byte, described multiplex stream bag is converted to multi-frame according to described sync byte;
Obtain the sign of the business that needs broadcast, and from the described multi-frame that is converted to, obtain and preserve the control information table;
Obtain the multi-frame sign and the sequence number of the pairing described multiplexed sub frame of described business in corresponding multi-frame of the multi-frame at the corresponding multiplexed sub frame place of described business according to the described control information table of preserving;
The described multi-frame that buffer memory obtains identifies pairing multi-frame, and obtains corresponding multiplexed sub frame according to the described sequence number of obtaining from the described multi-frame of buffer memory, and obtains the video unit and/or the audio unit of described business from the described multiplexed sub frame that obtains.
8. a Deplexing apparatus is applied to mobile multimedia broadcast system, it is characterized in that, described device comprises:
Field programmable gate array is used for searching for sync byte at the multiplex stream bag of multiplexing code stream, and according to described sync byte described multiplex stream bag is converted to multi-frame, and carry out the buffer memory of multi-frame under the control of central processing unit;
Described central processing unit, be used to obtain the sign of the business that needs play, and from the described multi-frame that is converted to, obtain and preserve the control information table, and according to the described control information table of preserving, obtain the multi-frame sign of the multi-frame at the corresponding multiplexed sub frame place of described business, and the sequence number of the pairing described multiplexed sub frame of described business in corresponding multi-frame, and the described sequence number of obtaining from the multi-frame by described field programmable gate array buffer memory obtains corresponding multiplexed sub frame from the described multi-frame of buffer memory, obtains the video unit and the audio unit of described business from the described multiplexed sub frame that obtains.
9. device according to claim 8 is characterized in that, described central processing unit obtains being treated to of described control information table:
Multi-frame 0 from the described multi-frame that is converted to obtains described control information, and described control information table comprises multiplexing allocation list at least.
10. device according to claim 8, it is characterized in that, described central processing unit also is used for: after the pairing multi-frame of described sign that described field programmable gate array buffer memory obtains, judge in the head of described multi-frame of buffer memory whether comprise and be used to identify the mark that described control information table is updated, and obtain and preserve the control information table under the situation that is again being judged as, and utilize the control information table that obtains again that the control information table of former preservation is upgraded.
11. device according to claim 8 is characterized in that, the processing that described central processing unit obtains described video unit and described audio unit is specially:
Described central processing unit parses video-frequency band and audio section from the multiplexed sub frame that obtains, and obtains described video unit according to described video-frequency band, obtains described audio unit according to described audio section.
12. a demultiplexing system is applied to mobile multimedia broadcast system, it is characterized in that, described demultiplexing system comprises:
Deplexing apparatus is connected at least one multiplexer and/or at least one re-multiplexer, and comprises:
Field programmable gate array, be used to receive multiplexing code stream from described multiplexer and/or re-multiplexer, in the multiplex stream bag of multiplexing code stream, search for sync byte, and described multiplex stream bag is converted to multi-frame, and under the control of central processing unit, carry out the buffer memory of multi-frame according to described sync byte;
Described central processing unit, be used to obtain the sign of the business that needs play, and from the described multi-frame that is converted to, obtain and preserve the control information table, and according to the described control information table of preserving, obtain the multi-frame sign of the multi-frame at the corresponding multiplexed sub frame place of described business, and the sequence number of the pairing described multiplexed sub frame of described business in corresponding multi-frame, and the described sequence number of obtaining from the multi-frame by described field programmable gate array buffer memory obtains corresponding multiplexed sub frame from the described multi-frame of buffer memory, obtains the video unit and/or the audio unit of described business from the described multiplexed sub frame that obtains;
Player is connected to described Deplexing apparatus, is used for playing described business according to the video unit and/or the audio unit of described business.
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| CN2008101305590A CN101309425B (en) | 2008-07-07 | 2008-07-07 | Deplexing method, apparatus and system |
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| CN2008101305590A CN101309425B (en) | 2008-07-07 | 2008-07-07 | Deplexing method, apparatus and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674485B (en) * | 2009-10-13 | 2012-02-08 | 中兴通讯股份有限公司 | Selected output device of packaging multiplexing code stream and method thereof |
| CN102547252A (en) * | 2010-12-09 | 2012-07-04 | 盛乐信息技术（上海）有限公司 | Method and system for multiplexing other data in audio-video code stream by using FPGAs (field programmable gate arrays) |
| CN106060645A (en) * | 2016-05-30 | 2016-10-26 | 北京海尔集成电路设计有限公司 | Method and device for Chinese digital audio broadcasting demultiplexing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100755434B1 (en) * | 2004-12-14 | 2007-09-04 | 삼성전자주식회사 | Device and method for demultiplexing received transport stream in digital broadcasting receiver |
| CN100551076C (en) * | 2007-07-10 | 2009-10-14 | 北京中星微电子有限公司 | Transmission flow demultiplexing apparatus and method |
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2008
- 2008-07-07 CN CN2008101305590A patent/CN101309425B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674485B (en) * | 2009-10-13 | 2012-02-08 | 中兴通讯股份有限公司 | Selected output device of packaging multiplexing code stream and method thereof |
| CN102547252A (en) * | 2010-12-09 | 2012-07-04 | 盛乐信息技术（上海）有限公司 | Method and system for multiplexing other data in audio-video code stream by using FPGAs (field programmable gate arrays) |
| CN106060645A (en) * | 2016-05-30 | 2016-10-26 | 北京海尔集成电路设计有限公司 | Method and device for Chinese digital audio broadcasting demultiplexing |
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| CN101309425B (en) | 2010-06-09 |
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