CN103873745A - Broadcasting system realizing high-definition and standard-definition simultaneous broadcasting - Google Patents
Broadcasting system realizing high-definition and standard-definition simultaneous broadcasting Download PDFInfo
- Publication number
- CN103873745A CN103873745A CN201410095227.9A CN201410095227A CN103873745A CN 103873745 A CN103873745 A CN 103873745A CN 201410095227 A CN201410095227 A CN 201410095227A CN 103873745 A CN103873745 A CN 103873745A
- Authority
- CN
- China
- Prior art keywords
- video server
- isomery
- definition
- broadcasting
- broadcast 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
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides a broadcasting system realizing high-definition and standard-definition simultaneous broadcasting. The broadcasting system comprises a video server, a broadcasting matrix and a broadcasting signal link, wherein the broadcasting matrix obtains video and audio programs from the video server and broadcasts out the programs through the broadcasting signal link, the video server comprises a plurality of video servers, the structures of the video servers are different from each other, in addition, at least two standard-definition broadcasting signal links are arranged on the broadcasting signal link, and lower converters in the two standard-definition broadcasting signal links have mutually different structures. According to the broadcasting system realizing high-definition and standard-definition simultaneous broadcasting, the video server and the broadcasting signal links are respectively set into different structures, so the reliability and the safety of the system are improved.
Description
Technical field
The present invention relates to broadcasting television technology field, relate in particular to a kind of broadcast system of high standard definition simulcast.
Background technology
In field of broadcast televisions, for the program that improves TV station broadcasts reliability, the video server of broadcast system generally adopts main video server and standby video server at present, so that in the time of main video server fault, utilizes standby video server that the service of broadcast is provided.Current, main video server and standby video server adopt video server of the same race conventionally.Along with the upgrading of software, hardware, the fast development of software engineering, can run into some and be difficult to problems of precognition while using video server of the same race as the active and standby video server of broadcast system.
In broadcast system, the source that material is reorganized and outfit can be divided into that broadcast system inside is reorganized and outfit and realize and interconnected two kinds of modes of third party's operation system by trunk platform or direct-connected mode.When interconnected with external system, in the time that external system is upgraded or change the default parameters of generating object file, material reaches behind broadcast system inside, may occur the situation of the material that None-identified is new in the time that video server is play.
Except software change easily causes broadcast accident, video server self upgrading is also abnormally dangerous.Such as, along with the appearance of new file format, existing broadcast system can not be supported these emerging file formats sometimes, now just need to upgrade to the decoder of video server.In order to ensure to broadcast safety, by first a upgrade video server trying out a period of time of meeting, if do not pinpointed the problems, comprehensively upgrade again afterwards.But because the standby video server of advocating peace of broadcast system is identical video server, if run into more special material file after upgrading, the decoding of the standby video server of advocating peace all may go wrong, and now will affect normal broadcast.If adopt isomery video server, the situation that there will not be two video server to upgrade or go wrong simultaneously.
But, not say and at random adopt the video server of two different brands to carry out isomery broadcast with regard to ensureing that broadcast normally, still easily occurs the problem that file format is incompatible sometimes, be unfavorable for safe broadcast.
Therefore, still expect the detailed settlement project of the broadcast system that a kind of isomery is provided, it can overcome the shortcoming of existing isomorphism video server, can also reduce the incompatible problem of file format simultaneously, improves and broadcasts fail safe.
Summary of the invention
The present invention is directed to the problems referred to above, proposed a kind of broadcast system of isomery, it can overcome the shortcoming of existing isomorphism video server, can also reduce the incompatible problem of file format simultaneously, improves and broadcasts fail safe.
Particularly, the invention provides a kind of broadcast system of high standard definition simulcast, it comprises video server, broadcasts matrix and broadcasting signal link, broadcast matrix and obtain video-audio program and broadcast via broadcasting signal link from video server, wherein video server comprises multiple video servers of isomery to each other; And on broadcasting signal link, at least have two SD broadcasting signal links, the downconverter in these two SD broadcasting signal links is the downconverter of isomery to each other.
Especially multiple video servers of isomery can comprise main video server and the standby video server of isomery to each other, to each other.Further, multiple video servers of isomery also can comprise and the 3rd backup video server of main video server and the standby equal isomery of video server to each other.In addition, multiple video servers of isomery also can comprise main video server and the standby video server of isomorphism each other to each other, and back up video server with the 3rd of main video server and the standby equal isomery of video server.
Particularly, to each other multiple video servers of isomery to be specially the encoding and decoding part of video server different to each other from storage administration part.
In addition, the downconverter of isomery is specifically as follows the different downconverter of AFD information processing mechanism to each other.AFD information processing mechanism can comprise that two of requirement high-definition signals must have the first kind of AFD information and allow high-definition signal to lack the Second Type of part AFD information.Be made as the downconverter that allows high-definition signal to lack the Second Type of part AFD information for its AFD processor, in the time not embedding AFD information in certain field signal of discovery, follow the mapping mode of.
According to the broadcast system of high standard definition simulcast of the present invention, by video server and broadcasting signal link are all set to isomery, improve reliability and the fail safe of system.
Brief description of the drawings
Specific embodiments of the invention are described below with reference to accompanying drawings, wherein:
Fig. 1 shows the schematic diagram of the composition structure of video server;
Fig. 2 shows the isomery schematic diagram according to the broadcast system of high standard definition simulcast of the present invention.
Embodiment
In order to make technical scheme of the present invention and advantage clearer, below in conjunction with accompanying drawing, exemplary embodiment of the present invention is described in more detail, obviously, described embodiment is only a part of embodiment of the present invention, instead of all embodiment's is exhaustive.
In the present invention, video server refers to the server that video and audio file is provided for broadcast system in radio data system, although therefore name is called video server, but its file providing is not limited only to video file, but can also have audio file, or there is the video file of audio frequency.
As shown in Figure 1, whole video server comprises five major parts such as video and audio input/output section 101, control and network portion 102, encoding and decoding part 103, storage administration part 104 and operating system 105.These five parts are communicated with by cross point switch 106.
For video and audio input/output section 101 and control and internet transmission of virtual laboratory 102, there is general international standard at present, do not relate to the problem of isomery.Encoding and decoding part 103 is the most key parts of current video server with storage administration part 104, is also the link the most easily going wrong.Its reason is as follows: first, for broadcasting security consideration, the storage system relative closure of video server, can not directly be accessed by third party's system conventionally, causes some regular file integrity checking methods to lose efficacy, and for example MD5 verification cannot be applied; Secondly, the video server manufacturer of main flow on the market at present, still can not provide API or other interfaces of file integrality verification; Again, aspect file format compatible, although SMPTE has specified related specifications, for example MXF file format just provided clearly regulation at SMPTE377M-2004 as far back as 2004, but for the implementation of some details such as such as MetaData metadata, different vendor is slightly variant, and the video and audio file that causes different video server producer to gather output exists not by the possibility of other server-compatibles; Finally, aspect code/decode format compatible, each manufacturer server is also not quite identical, for example, once occurred the material that certain video server A gathers, the phenomenon that its audio format can not be identified by video server B.
The isomery difference that may occur according to video server, for the video server of isomery can compatible collaborative work, in the time that design isomery video server is realized, need to follow following principle: adopt active and standby video server or the 3rd backup video server of heterogeneous schemas, consistent as far as possible on framework; Including the aspect such as control characteristic, transmission characteristic, active and standby video server wants performance to approach, otherwise can in control or document transmission process, occur " wooden barrel effect "; Format compatible-file format compatibility and code/decode format compatibility, for the former, if main video server can only be used A file format, standby video server can only be used B file format, brings many unnecessary troubles will to system or later stage operation; Consider from equipment operation maintenance angle, the complexity of reduction system maintenance that be to greatest extent, easy to maintenance.
The application model of video server isomery mainly contains two kinds of situations.The first situation is active and standby video server isomery, and the standby video server of advocating peace is taked different video servers, and now as there is the 3rd backup video server, the 3rd backup video server also can all belong to isomery with the standby video server of advocating peace so; The second situation is that the standby video server of advocating peace is consistent, but the 3rd backup video server belongs to isomery with the standby video server of advocating peace.
In the present invention, not only consider the isomery of video server, and be conceived to the isomery of whole broadcast system.Broadcasting signal link is that in broadcast system, video server receives instruction and video/audio signal transferred to the equipment such as matrix and the link of final output broadcasting signal from broadcasting controller.As the important component part of broadcast system, in broadcasting signal link, using isomery mode is also to improve the important application pattern of broadcast system fail safe.Other heterogeneous schemas of link level, need to consider from link signal flow process, can describe as an example of output clastotype common in high standard definition simulcasting system example.High standard definition simulcast is exactly for same program source, synchronously exports the signal of high definition and SD.The implementation of high standard definition simulcasting system can be divided into two kinds: 1, set up respectively independent high definition broadcasting signal link and SD broadcasting signal link; 2, high definition broadcasting signal link is realized high standard definition simulcast by the method for down conversion.Because current a large amount of program source is all high-definition format, in broadcast system, to realize high standard definition simulcast, employing mode 2 is the most economically viable schemes.At present, high definition down conversion is SD except when signal format changes, and width type the ratio of width to height also became 4: 3 from 16: 9.
Particularly, high-definition signal is encircled out by the HD-SDI of downconverter, as the output of high definition channel; SD signal gets by the SD-SDI output of downconverter, as the SD channel output with broadcasting.Be not difficult to find out that, on this link, the type selecting of downconverter and link design are very crucial.
Downconverter in broadcasting signal link according to the AFD of program source (Active Format Description, live image format descriptor, in SMPTE standard for describing the part of width type) information carries out the conversion of width type automatically.The effect of AFD information is to describe program current width type, so that the width type conversion while instructing follow-up use program.Program source in broadcast system requires all with AFD information, so that corresponding processing is identified and made to downconverter automatically before entering handoff links.Different downconverter manufacturers is to embedding the AFD information processing mechanism difference in HD-SDI signal.Downconverter is roughly divided into two classes to the treatment mechanism of AFD information: the first kind: the AFD information requirements that downconverter equipment embeds for HD-SDI are strict, require two of high-definition signals must have AFD information, otherwise will cause broadcasting black; Equations of The Second Kind: the AFD information requirements that downconverter equipment embeds for HD-SDI are higher, but equipment has certain fault-tolerance, if find not embed in certain field signal AFD information, acquiescence is followed the mapping mode of, when even field lacks the situation of AFD information when occurring odd field to have AFD information, still can ensure normal output and the conversion of SD.From link design angle analysis, for above-mentioned application scenarios, if main/slave link adopts heterogeneous schemas, the difference characteristic of output signal when consideration equipment isomery, video server decoded output signal need to be designed to ensure to have normally safe broadcast of a road signal at least while there is the disappearance of AFD information, and for raising broadcast system, fail safe has certain help for this.
In the present invention, in two standard definition simulcast links, can adopt the different downconverter of its AFD information processing mechanism, thereby improve the compatibility of link, improve and broadcast fail safe.
As shown in Figure 2, in broadcast system, broadcast the broadcast of matrix 210 responsible programs, the source of its program is roughly divided into two classes.One class is to be derived from video server, and main video server 201 and standby video server 202, wherein store the program through reorganizing and outfit, and this class program can directly transfer to and broadcast matrix 210.In the present invention, main video server 201 and standby video server 202 are isomery type.Another kind ofly can be described as external circuit signal, if external SD signal (SD) need to embed AFD information through AFD embedded device so, and after up conversion is high-definition signal, transfers to and broadcast matrix 210; But if external high-definition signal (HD) can, after AFD embedded device embeds AFD information, directly transfer to and broadcast matrix 210 so.Broadcast matrix 210 in the time of output broadcasting signal, for the ease of high standard definition simulcast, conventionally export high definition broadcasting signal.If broadcasting signal is chosen as high-definition signal, so can directly output after audio frequency is processed.If but need to export SD broadcasting signal, the high-definition signal that so just need to utilize downconverter to export broadcast matrix 210 carries out down conversion, changes SD broadcasting signal into, and after processing via downstream key and audio frequency, exports as SD signal.In the present invention, in order to improve reliability and the fail safe of broadcast system, be provided with two-way independently of one another and the downconverter of isomery and corresponding downstream key and apparatus for processing audio.Here, the isomery of downconverter refers to and adopts different AFD information processing mechanisms.Because the downconverter of isomery can be processed dissimilar AFD information, thereby just improve the fault-tolerance of broadcast system, thereby in the time that needs are exported SD broadcasting signal, improved reliability and the fail safe of broadcast system.
By broadcast system is configured to heterogeneous schemas, can realize following advantage:
(1) avoid because software defect causes active and standby video server simultaneous faults.In server, moving a series of software, and software test cannot be found all random errors completely, can avoid due to software defect by isomery, and cause the major disaster of active and standby simultaneous faults.
(2) avoid upgrading impact.Because software upgrading frequency is high, inadequate for the test environment emulation degree of upgrade version software vendors, stability test is insufficient, is upgraded and may be able to be avoided simultaneously influenced by isomery.
(3) improve opposing malicious attack ability.The redundancy of hardware can improve the reliability of system, and software redundancy improves limited to system reliability.Isomorphism exists and is subject to the possibility that malicious code is attacked simultaneously, and platform isomery is conducive to improve entire system resists the ability of malicious code.
Above embodiment is only in order to technical scheme of the present invention to be described, but not is limited.Therefore,, in the situation that not deviating from spirit of the present invention and essence thereof, those skilled in the art can make various changes, replacement and modification.Obviously, but within these changes, replacement and modification all should be covered by the protection range of the claims in the present invention.
Claims (8)
1. a broadcast system for high standard definition simulcast, it comprises video server, broadcasts matrix and broadcasting signal link, and broadcast matrix and obtain video-audio program and broadcast via broadcasting signal link from video server, wherein:
Described video server comprises multiple video servers of isomery to each other; And
On described broadcasting signal link, at least have two SD broadcasting signal links, the downconverter in these two SD broadcasting signal links is the downconverter of isomery to each other.
2. broadcast system as claimed in claim 1, is characterized in that, multiple video servers of described isomery to each other comprise: the main video server of isomery and standby video server to each other.
3. broadcast system as claimed in claim 2, is characterized in that, multiple video servers of described isomery to each other also comprise: with the 3rd backup video server of main video server and the standby equal isomery of video server.
4. broadcast system as claimed in claim 1, it is characterized in that, multiple video servers of described isomery to each other comprise: the main video server of isomorphism and standby video server each other, and back up video server with the 3rd of main video server and the standby equal isomery of video server.
5. as the broadcast system as described in arbitrary in claim 2-4, it is characterized in that, the encoding and decoding part that multiple video servers of described isomery are to each other specially video server is different to each other from storage administration part.
6. broadcast system as claimed in claim 1, is characterized in that, the downconverter of described isomery is to each other specially the different downconverter of AFD information processing mechanism.
7. broadcast system as claimed in claim 6, is characterized in that, described AFD information processing mechanism comprises that two of requirement high-definition signals must have the first kind of AFD information and allow high-definition signal to lack the Second Type of part AFD information.
8. broadcast system as claimed in claim 7, it is characterized in that, be made as the downconverter that allows high-definition signal to lack the Second Type of part AFD information for its AFD processor, in the time not embedding AFD information in certain field signal of discovery, follow the mapping mode of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410095227.9A CN103873745B (en) | 2014-03-14 | 2014-03-14 | A kind of broadcast system of high standard definition simulcast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410095227.9A CN103873745B (en) | 2014-03-14 | 2014-03-14 | A kind of broadcast system of high standard definition simulcast |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103873745A true CN103873745A (en) | 2014-06-18 |
| CN103873745B CN103873745B (en) | 2018-03-09 |
Family
ID=50911839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410095227.9A Active CN103873745B (en) | 2014-03-14 | 2014-03-14 | A kind of broadcast system of high standard definition simulcast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103873745B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114727118A (en) * | 2022-04-06 | 2022-07-08 | 北京广播电视台 | Television station ultra-high definition broadcasting framework capable of realizing light weight broadcasting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202085232U (en) * | 2011-06-07 | 2011-12-21 | 北京世纪睿科系统技术有限公司 | Television program broadcasting system |
| CN202334793U (en) * | 2011-12-08 | 2012-07-11 | 成都东方盛行电子有限责任公司 | Whole process high-standard definition simulcast integrated system |
| CN202334699U (en) * | 2011-12-08 | 2012-07-11 | 成都东方盛行电子有限责任公司 | Multi-channel high standard definition video server system |
-
2014
- 2014-03-14 CN CN201410095227.9A patent/CN103873745B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202085232U (en) * | 2011-06-07 | 2011-12-21 | 北京世纪睿科系统技术有限公司 | Television program broadcasting system |
| CN202334793U (en) * | 2011-12-08 | 2012-07-11 | 成都东方盛行电子有限责任公司 | Whole process high-standard definition simulcast integrated system |
| CN202334699U (en) * | 2011-12-08 | 2012-07-11 | 成都东方盛行电子有限责任公司 | Multi-channel high standard definition video server system |
Non-Patent Citations (3)
| Title |
|---|
| 周宏飞: "电视台高清播出系统设计", 《广播与电视技术》 * |
| 张杰: "乌鲁木齐电视台高标清数字化硬盘播出系统特点分析", 《中国传媒科技》 * |
| 沈炜: "基于AFD的高标清同播系统方案探析", 《电视工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114727118A (en) * | 2022-04-06 | 2022-07-08 | 北京广播电视台 | Television station ultra-high definition broadcasting framework capable of realizing light weight broadcasting |
| CN114727118B (en) * | 2022-04-06 | 2023-06-16 | 北京广播电视台 | Television station ultra-high definition broadcasting architecture for realizing light-weight broadcasting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103873745B (en) | 2018-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9218265B2 (en) | Monitoring and controlling the operation of devices in a distributed network of broadcast devices | |
| US20210117273A1 (en) | System and method for detection of, prevention of, and recovery from software execution failure | |
| US20110013772A1 (en) | Method and Apparatus for Fast Switching Between Source Multimedia Devices | |
| US20140040972A1 (en) | Fail-safe switch for media insertion server in a broadcast stream | |
| CN106303430A (en) | The method playing monitoring in real time without plug-in unit in browser | |
| KR101320280B1 (en) | Tv software upgrade using tv internet adapter | |
| US10484726B2 (en) | Playlist error tags for delivery and rendering of streamed media | |
| CN102833543B (en) | Device and method for detecting video coding format of video and audio media files | |
| WO2019071680A1 (en) | Plug-in loading method and apparatus | |
| CN101212689A (en) | Method for software upgrade for digital TV signal receiver | |
| CN109375934A (en) | A kind of upgrade method of network cluster device systems | |
| KR20150139595A (en) | Syntax-aware manipulation of media files in a container format | |
| CN101682753A (en) | System and method for reducing the zapping time | |
| CN104410917A (en) | Realization method for cable interactive television cross-domain video service connection system | |
| CN101563684A (en) | Unified storage security model | |
| US20160037366A1 (en) | Detection and reporting of network impairments | |
| CN112423070A (en) | IPTV remote operation monitoring method, device system and equipment | |
| US20190069010A1 (en) | Online Video and Audio Broadcasting System, Method, and Computer Program Product Thereof | |
| US20080168299A1 (en) | Recovery Mechanism for Embedded Device | |
| CN103152617B (en) | A kind of interactive TV long-distance disaster system and method | |
| CN103873745A (en) | Broadcasting system realizing high-definition and standard-definition simultaneous broadcasting | |
| CN105472418A (en) | Abnormal state recovery method of set-top box system and set-top box | |
| US9218238B2 (en) | Contents data recording apparatus and contents data recording method | |
| US9307204B1 (en) | Enhancement of media sink compatibility | |
| US20170150208A1 (en) | Audio and video playing device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |