CN102611918A - Synchronous video playing control system and method - Google Patents
Synchronous video playing control system and method Download PDFInfo
- Publication number
- CN102611918A CN102611918A CN2012100858992A CN201210085899A CN102611918A CN 102611918 A CN102611918 A CN 102611918A CN 2012100858992 A CN2012100858992 A CN 2012100858992A CN 201210085899 A CN201210085899 A CN 201210085899A CN 102611918 A CN102611918 A CN 102611918A
- Authority
- CN
- China
- Prior art keywords
- server
- audio video
- video synchronization
- card
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 19
- 238000004891 communication Methods 0.000 claims abstract description 63
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a synchronous video playing control system which comprises a server, at least two terminals and communication cables; a first industrial communication card is arranged in the server; a second industrial communication card is respectively arranged in each terminal; the number of the communication cables is the same with that of the terminals; each terminal is respectively connected with the server through the communication cable; and one end of each communication cable is connected with the first industrial communication card, and the other end of each communication cable is respectively connected with the second industrial communication card. The invention has the beneficial effects that: according to the invention, the connection between the server and the terminals is realized through the first industrial communication card, the second industrial communication cards and the communication cables, a special data channel is provided, and real-time synchronization is instantly triggered through the instant interruption and other switch quantity of a peripheral component interconnection (PCI) industrial control card, which is as a switch controls the on and the off of current; and errors caused by the instability and the uncertainty of network transmission are completely abandoned.
Description
Technical field
The present invention relates to audio/video player system, relate in particular to audio video synchronization broadcasting control system and method.
Background technology
Traditional audio video synchronization scheme is to adopt ICP/IP protocol and udp protocol to communicate; In order to keep many machine synchronous playing, eliminate each species diversity, farthest video, audio frequency and the special efficacy of realization broadcast is synchronous; Take server to send the mode of signal lock in time; Pass through UDP (User Datagram Protocol) communication protocol transmitting time signal in network by server according to certain hour interval (1 second), after each player receives time signal, come the controls playing flow process according to this signal; Eliminate difference, reach synchronous purpose.
Though more than this method considered the nonsynchronous various factors of network, this method still has very big uncertainty, at first to receive the time point of network be uncertain to each machine; Even for the separate unit machine; Current and the next time delays that receives internet message also is uncertain, repeatedly counts a tree names bag if lose, and will cause asynchronous; If it is significantly asynchronous that add up error also can cause, dodge screen if constantly can occur frame-skipping by force synchronously again.All these all are because unreliable and uncertain the causing of legacy network transmission.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of audio video synchronization broadcasting control system.
The invention provides a kind of audio video synchronization broadcasting control system; Comprise a server, at least two station terminal machines, communication cable; The first industrial communication card is installed in the said server; Be separately installed with the second industrial communication card in every said terminating machine; Communication cable quantity is identical with said terminating machine quantity, links to each other through said communication cable respectively between every said terminating machine and the said server and each said communication cable one end links to each other with the said first industrial communication card, each said communication cable other end is connected with each said second industrial communication card respectively.
As further improvement of the present invention, said first industrial communication card and the said second industrial communication card are PCI industry control card.
As further improvement of the present invention, said PCI industry control card is PCI-1733.
As further improvement of the present invention, this audio video synchronization broadcasting control system also comprises display, and said display is at least two, and each said display links to each other with each said terminating machine is corresponding one by one respectively respectively.
As further improvement of the present invention, this audio video synchronization broadcasting control system also comprises display unit, and said display unit links to each other with said server.
The present invention also provides a kind of audio video synchronization control method for playing back, comprises the steps:
A. the client of server in each terminating machine sent the joint detection signal, all normally is connected with server like all clients, so execution in step B;
B. server passes through communication cable to all client tranmitting data register synchronizing signals, so that the clock of the clock of all clients and server keeps synchronously;
C. server sends play command to all clients.
As further improvement of the present invention, this audio video synchronization control method for playing back also comprises the steps:
D. server judges whether all client terminal playing are synchronous, as asynchronous, and execution in step E so;
E. server sends speed-regulating signal, execution in step D then to playing nonsynchronous client.
As further improvement of the present invention, in step D, comprise the steps:
D1. server sends request signal to all clients;
D2. server receives the current broadcast frame number of each client;
D3. server compares all broadcast frame numbers that receive, and exceeds allowed band like error, is judged to be asynchronous so.
As further improvement of the present invention, in steps A, the client of server in each terminating machine sent the joint detection signal, all normally is connected with server like all clients, so execution in step B; Normally be not connected with server like client, continue execution in step A so.
As further improvement of the present invention, in step B, clock sync signal sends through the pulse signal of communication cable.
The invention has the beneficial effects as follows: the present invention has realized being connected between server and the terminating machine through using the first industrial communication card, the second industrial communication card and communication cable; Special-purpose number a tree name passage is provided; Utilize the switching values such as instantaneous interruption of PCI industry control card to come instant the triggering in real time synchronously; Can be compared to the folding of electric brake switch Control current, abandon the unsteadiness and the uncertain error that causes of Network Transmission fully.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Fig. 2 is a method flow diagram of the present invention.
Fig. 3 is the method flow diagram of one embodiment of the invention.
Embodiment
As shown in Figure 1; The invention discloses a kind of audio video synchronization broadcasting control system; Comprise a server 1, at least two station terminal machines 2, communication cable; The first industrial communication card 5 is installed in the said server 1; Be separately installed with the second industrial communication card 6 in every said terminating machine 2, communication cable quantity is identical with said terminating machine 2 quantity, links to each other through said communication cable respectively between every said terminating machine 2 and the said server 1 and each said communication cable one end links to each other with the said first industrial communication card 5, each said communication cable other end is connected with each said second industrial communication card 6 respectively.
The said first industrial communication card 5 is PCI industry control card with the said second industrial communication card 6.Said PCI industry control card is PCI-1733.
This audio video synchronization broadcasting control system also comprises display 7, and said display 7 is at least two, and each said display 7 is corresponding one by one respectively continuous with each said terminating machine 2 respectively.
This audio video synchronization broadcasting control system also comprises display unit 8, and said display unit 8 links to each other with said server 1.
This audio video synchronization broadcasting control system also comprises the line cover, and communication cable is placed in the line cover, prevents that communication cable is impaired.It is direct-connected that server 1 and terminating machine 2 stick into row through industrial communication, and the first industrial communication card 5 on the server 1 is direct-connected with the second industrial communication card 6 of the form of a switching value and terminating machine 2.
The present invention has realized being connected between server 1 and the terminating machine 2 through using the first industrial communication card 5, the second industrial communication card 6 and communication cable; Special-purpose number a tree name passage is provided; Utilize the switching values such as instantaneous interruption of PCI industry control card to come instant the triggering in real time synchronously; Can be compared to the folding of electric brake switch Control current, abandon the unsteadiness and the uncertain error that causes of Network Transmission fully.
PCI-1733 can provide and isolate the digital quantity input channel and isolate the digital quantity output channel, and insulation blocking voltage can reach 2500VDC.They are that the ideal that requirement takes high voltage to isolate commercial Application is selected. in addition; All output channels all provide high voltage protection. and pci bus is a kind of high-performance local bus that Intel Company releases, and its main feature is: the synchronous bus that 1. has 32 of the multiplexed high-performance of address date or 64.2. the PCI local bus can reach the bandwidth of peak value 132Mbit/s when 33MHz bus clock, 32 bit data paths; At the 33MHz bus clock, can reach the bandwidth of peak value 264Mbit/s during 64 bit data paths; When the 66MHz dominant frequency,, can reach the bandwidth of 264Mbit/s or 528Mbit/s respectively for the peak value of 32 bit data paths and 64 bit data channel bandwidths; Pci bus also has linear burst capability, has guaranteed fully loaded high-speed transfer.3. the design of pci bus is independent of processor, carries out hardware easily in the microcomputer of accord with PCI Specification and the workstation system and transplants, and has become one of local bus of embedded system at present.5. the operation of many master controls of bus and asynchronous data transfer is adopted in minimum access time-delay.7. pci bus and CPU and clock frequency are irrelevant, and it can support a plurality of peripheral hardwares, and equipment room can be accomplished data through local bus and transmit fast, thereby solves the bottleneck problem of transfer of data well.8. to PCI Mezzanine Card and element, can dispose automatically, realize the plug and play of equipment.
As shown in Figure 2; The invention also discloses a kind of audio video synchronization control method for playing back, comprise the steps: in step S1, the client of server in each terminating machine sent the joint detection signal; All normally be connected like all clients, so execution in step S2 with server.In step S2, server passes through communication cable to all client tranmitting data register synchronizing signals, so that the clock of the clock of all clients and server keeps synchronously.In step S3, server sends play command to all clients.
The problem of the asynchronous maximum of video is the asynchronous of starting point, and can't accomplish precise synchronization synchronously through procotol.The present invention to step S3, has at first solved the synchronous problem of starting point through execution in step S1, makes video can carry out synchronous playing.
When video was play, we supposed that client can so just continue execution in step S4 because reasons such as terminal computer system cause asynchronous (certain this situation seldom occurs) in playing process.In step S4, server judges whether all client terminal playing are synchronous, as asynchronous, and execution in step S5 so.In step S5, server sends speed-regulating signal, execution in step S4 then to playing nonsynchronous client.
As shown in Figure 3, as one embodiment of the present of invention, step S4 comprises the steps: that in step S41 server sends request signal to all clients.In step S42, server receives the current broadcast frame number of each client.In step S43, server is play frame number to all that receive and is compared, and whether judgement is synchronous, exceeds allowed band like error, is judged to be asynchronous so.
In step S41, server whenever sends request signal at a distance from 1000 milliseconds to all clients.Client is installed in the terminating machine.
In step S1, the client of server in each terminating machine sent the joint detection signal, all normally is connected with server like all clients, so execution in step S2; Normally be not connected with server like client, continue execution in step S1 so.In step S2, clock sync signal sends through the pulse signal of communication cable.
, can be adjusted to synchronously to step S5 through execution in step S4, guarantee that the video playback of each client is synchronous playing nonsynchronous video.Use method of the present invention that video is carried out precise synchronization, for example be used for three-dimensional Circamara, will make picture clear and smooth more, stereoeffect is truer.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. audio video synchronization broadcasting control system; It is characterized in that: comprise a server, at least two station terminal machines, communication cable; The first industrial communication card is installed in the said server; Be separately installed with the second industrial communication card in every said terminating machine; Communication cable quantity is identical with said terminating machine quantity, links to each other through said communication cable respectively between every said terminating machine and the said server and each said communication cable one end links to each other with the said first industrial communication card, each said communication cable other end is connected with each said second industrial communication card respectively.
2. audio video synchronization broadcasting control system according to claim 1 is characterized in that: said first industrial communication card and the said second industrial communication card are PCI industry control card.
3. audio video synchronization broadcasting control system according to claim 2 is characterized in that: said PCI industry control card is PCI-1733.
4. audio video synchronization broadcasting control system according to claim 3; It is characterized in that: this audio video synchronization broadcasting control system also comprises display; Said display is at least two, and each said display links to each other with each said terminating machine is corresponding one by one respectively respectively.
5. audio video synchronization broadcasting control system according to claim 4 is characterized in that: this audio video synchronization broadcasting control system also comprises display unit, and said display unit links to each other with said server.
6. an audio video synchronization control method for playing back is characterized in that, comprises the steps:
A. the client of server in each terminating machine sent the joint detection signal, all normally is connected with server like all clients, so execution in step B;
B. server passes through communication cable to all client tranmitting data register synchronizing signals, so that the clock of the clock of all clients and server keeps synchronously;
C. server sends play command to all clients.
7. audio video synchronization control method for playing back according to claim 6 is characterized in that, this audio video synchronization control method for playing back also comprises the steps:
D. server judges whether all client terminal playing are synchronous, as asynchronous, and execution in step E so;
E. server sends speed-regulating signal, execution in step D then to playing nonsynchronous client.
8. audio video synchronization control method for playing back according to claim 7 is characterized in that, in step D, comprises the steps:
D1. server sends request signal to all clients;
D2. server receives the current broadcast frame number of each client;
D3. server compares all broadcast frame numbers that receive, and exceeds allowed band like error, is judged to be asynchronous so.
9. according to each described audio video synchronization control method for playing back of claim 6 to 8; It is characterized in that: in steps A; The client of server in each terminating machine sent the joint detection signal, all normally is connected with server like all clients, so execution in step B; Normally be not connected with server like client, continue execution in step A so.
10. audio video synchronization control method for playing back according to claim 9 is characterized in that: in step B, clock sync signal sends through the pulse signal of communication cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210085899.2A CN102611918B (en) | 2012-03-28 | 2012-03-28 | Audio video synchronization broadcasting control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210085899.2A CN102611918B (en) | 2012-03-28 | 2012-03-28 | Audio video synchronization broadcasting control system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102611918A true CN102611918A (en) | 2012-07-25 |
| CN102611918B CN102611918B (en) | 2015-08-26 |
Family
ID=46529033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210085899.2A Active CN102611918B (en) | 2012-03-28 | 2012-03-28 | Audio video synchronization broadcasting control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102611918B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106375824A (en) * | 2016-10-08 | 2017-02-01 | 广东欧珀移动通信有限公司 | Clock adjustment method and device, terminal and multimedia synchronous playing system |
| CN106375823A (en) * | 2016-10-08 | 2017-02-01 | 广东欧珀移动通信有限公司 | Clock adjustment method and device, terminal and multimedia synchronous playing system |
| CN106385598A (en) * | 2016-10-08 | 2017-02-08 | 广东欧珀移动通信有限公司 | Clock adjusting method and device, terminal and multimedia synchronous playing system |
| CN110248213A (en) * | 2018-03-08 | 2019-09-17 | 上海分众软件技术有限公司 | Multimachine real-time synchronization play system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988667A (en) * | 2006-12-07 | 2007-06-27 | 中兴通讯股份有限公司 | Clock synchronizing method in broadcast network |
| WO2008151995A1 (en) * | 2007-06-12 | 2008-12-18 | Thomson Licensing | Phase control of a synchronization signal in a packet switching network |
| CN101969552A (en) * | 2010-11-17 | 2011-02-09 | 广东威创视讯科技股份有限公司 | System and method for parallel processing of video data |
| CN102271276A (en) * | 2010-12-24 | 2011-12-07 | 中国航空工业集团公司第六三一研究所 | Intelligent detection method and system for video signal conversion device |
-
2012
- 2012-03-28 CN CN201210085899.2A patent/CN102611918B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988667A (en) * | 2006-12-07 | 2007-06-27 | 中兴通讯股份有限公司 | Clock synchronizing method in broadcast network |
| WO2008151995A1 (en) * | 2007-06-12 | 2008-12-18 | Thomson Licensing | Phase control of a synchronization signal in a packet switching network |
| CN101969552A (en) * | 2010-11-17 | 2011-02-09 | 广东威创视讯科技股份有限公司 | System and method for parallel processing of video data |
| CN102271276A (en) * | 2010-12-24 | 2011-12-07 | 中国航空工业集团公司第六三一研究所 | Intelligent detection method and system for video signal conversion device |
Non-Patent Citations (1)
| Title |
|---|
| 张博，朱民耀: "基于FPGA的两路视频同步播放系统的设计", 《微计算机信息》, vol. 24, no. 62, 31 December 2008 (2008-12-31), pages 1 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106375824A (en) * | 2016-10-08 | 2017-02-01 | 广东欧珀移动通信有限公司 | Clock adjustment method and device, terminal and multimedia synchronous playing system |
| CN106375823A (en) * | 2016-10-08 | 2017-02-01 | 广东欧珀移动通信有限公司 | Clock adjustment method and device, terminal and multimedia synchronous playing system |
| CN106385598A (en) * | 2016-10-08 | 2017-02-08 | 广东欧珀移动通信有限公司 | Clock adjusting method and device, terminal and multimedia synchronous playing system |
| CN106375823B (en) * | 2016-10-08 | 2018-03-27 | 广东欧珀移动通信有限公司 | A kind of clock adjustment, device, terminal and multimedia synchronous play system |
| CN106375824B (en) * | 2016-10-08 | 2018-05-18 | 广东欧珀移动通信有限公司 | A kind of clock adjustment, device, terminal and multimedia synchronous play system |
| CN110248213A (en) * | 2018-03-08 | 2019-09-17 | 上海分众软件技术有限公司 | Multimachine real-time synchronization play system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102611918B (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103237191A (en) | Method for synchronously pushing audios and videos in video conference | |
| KR100352510B1 (en) | Apparatus and method for recovering clock of MPEG signal | |
| CN108880722B (en) | Clock synchronization method, system and optical transmission equipment | |
| CN1826742B (en) | Synchronous circuitry and system, method for synchronizing circuitry | |
| CN101809906A (en) | Synchronizing related data streams in interconnection networks | |
| CN103686325A (en) | Method and system for continuously playing media in multi-screen interaction | |
| US8547995B2 (en) | High definition video/audio data over IP networks | |
| US9800642B2 (en) | Communication of multimedia data streams over multiple communication lanes | |
| US20070286234A1 (en) | Synchronous transmission over packet based network | |
| KR101200070B1 (en) | Apparatus and method for inserting or extracting a timestamp information | |
| CN102611918A (en) | Synchronous video playing control system and method | |
| FR2498855A1 (en) | CHANNEL TIME DIVISION DIGITAL SWITCHING SYSTEM IN CIRCUIT AND PACKET MODE | |
| CN103051635A (en) | Method of communication between streaming media server and terminal | |
| CN113132552B (en) | Video stream processing method and device | |
| CN110602542B (en) | Audio and video synchronization method, audio and video synchronization system, equipment and storage medium | |
| CN104918042A (en) | Video signal network damage simulation device, system and method | |
| CN112866390B (en) | Data transmission method, device, terminal equipment and storage medium | |
| CN101316161B (en) | Synchronous indication method and system for distributed video | |
| CN111208866A (en) | System time adjusting method and device | |
| CN202503613U (en) | Video synchronous play control system | |
| Cisco | Interface Commands | |
| US7508813B2 (en) | Local area network contention avoidance | |
| KR101805850B1 (en) | Apparatus for packetizing non compressed video of multi video source in 10gigabit ethernet network and method threrof | |
| US7436847B2 (en) | Method for internet-protocol-based transmission of communication data | |
| KR20140088121A (en) | Services, systems and methods for precisely estimating a delay within a network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Room 501-525B39 Huarong Building 518000 Guangdong city of Shenzhen province Futian District Futian District Center Street Patentee after: SHENZHEN PLAYFUN CULTURE SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District Shennan Avenue and Xiangmi Lake at the junction of the southeast side of Green Plaza building 23 layer 23G Patentee before: SHENZHEN PLAYFUN CULTURE & TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |
Address after: 518000 Chegongmiao Tianan Innovation Technology Plaza A1403-28, Shatian Street, Futian District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN PLAYFUN CULTURE SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 518000 Room 501-525B39, Huarong Building, Futian Street Center, Futian District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN PLAYFUN CULTURE SCIENCE AND TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Video synchronous playback control system and method Effective date of registration: 20211221 Granted publication date: 20150826 Pledgee: Shenzhen Longgang sub branch of Agricultural Bank of China Ltd. Pledgor: SHENZHEN PLAYFUN CULTURE SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2021980015801 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230317 Granted publication date: 20150826 Pledgee: Shenzhen Longgang sub branch of Agricultural Bank of China Ltd. Pledgor: SHENZHEN PLAYFUN CULTURE SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2021980015801 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |