subject: [photo] Of The Digital Broadcast System, Reform Drive Program - Broadcast System, Hard Disk Systems, [print this page] Shaanxi TV analog, digital, mixed broadcasting system hard disk after a period of gestation, has been on the agenda, how to overcome the six-channel broadcast system deficiencies hard drive, combined with ad series series system, and build a Five plus one new hard drive system, and makes the system hard disk with the original six-channel broadcast system resource sharing and the physical structure of the separation of one another, their difficulty can be imagined, therefore, the selection of topology is important.
Shaanxi old system of the original six-channel television stations broadcast the Department of hard drive structure, shown in Figure 1.
Figure 1 Upload Shaanxi TV has two servers, Profilo in 1044 and 062,1044 code I have 4, 4 decoder; 1062 has six coding port, 2 decoder; on the set with the broadcast server, the server separation, with FC and Ethernet connected to the broadcast server has two Profilo in 1008, the 8-channel decoding.
Combination of the above structure, how to compile the system to expand this series of ads and optimizing the structure, we have the following options and explore their advantages and disadvantages.
Program a Is building five-plus-one hard disk system and the ad series compilation system, shown in Figure 2.
Figure 2 Five plus one video server system to break the original six-channel system, server and broadcast server to upload the pattern of separation, will be uploaded on the same server with broadcast integration, the use of multiple-channel video server (12 or 16-channel server). 4 video broadcast channel, a delayed broadcast channel, an alternate channel. Ad series is a compilation video server video server, database server in one, its main function is to SDI signal transcoded into MPEG-2IBP frame data stream, and can be compiled under the field attribute calendar packaged or demolition, and according to satisfaction conditions of implementation of the transfer.
This system is characterized by simple structure, least expensive, best cost performance, the biggest advantage is the use to upload and broadcast servers rolled completely changed due to upload and broadcast separation, leading to As with the video material can not be used, transmission of video depends entirely on the server itself, the migration speed, and material management software on the bottleneck. Significantly reduces the material management software scheduling pressures. The system can do with the sowing, broadcast on immediate material benefits of speechless on the ratio. However, this structure has its fatal shortcomings. Serial code of advertising on the SDI video server software encoding conversion, its speed can not be with knowledge, reliability can not be guaranteed, especially for real-time broadcast of advertising is more elusive.
To inherit the advantages of the above, overcoming the shortcomings, we consider the program 2. Option Two is to program a series of advertising series video server upload break up into a server and a data server.
Option II. Program two of the five-plus-one video server upload and broadcast is set on the same server. Ad Code system consists of the string containing the server and database servers. Upload server take on the video material encoding, storage; database server is responsible for the compilation of historical material, packing, dismantling, shown in Figure 3.
Figure 3 This system is characterized by simple, more programs to spend more than one, so cost performance declined. The biggest advantage is still to upload and broadcast rolled into the server, thus changing the separation due to upload and broadcast material migration caused by the bottleneck. Reduce the pressure of material management software. The program for the outstanding merits of instant news broadcast. Upload SDI signals, the advertising server hardware MPEG-2IBP frame coding, better real-time, ad series calendar convenience, any is better. For the advertising package, demolition just a pointer to the advertisement recorded, queuing, packaging and unpacking, no video material to edit or delete. However, fatal flaws. For real-time nature of advertising material can not be broadcast. After the need for packaging to determine the migration of the video material. The requirements of the material management software to further enhance, in particular, what kind of material on the package need to be relocated, what kind of material package without migration; need to move the material package in the end is moved to the old broadcast server or move to a new five-plus broadcast system server, the problem is the material most difficult task management software. The new system of database server database server with the old system, there is a major and minor interface issues, what kind of a new database data can be registered on the old database, what kind of a new database data can not be registered on the old database, how to register, broadcast over The material to be removed only in the old database, without deleting the new database data. In the new database, how to remove the material broadcast over the package, without removing almost no data of these problems are caused by such structural problems. Which we must consider.
Tackling the issue we still have ideas and methods to solve the problem, I believe that if we adopt this program, the problem must be resolved.
Combined program two problems, we should strive to overcome the programming has been able to realize the problem, find the optimum structure of the program, the system as safe, reliable, and cost performance as much as possible to high. Option Three is to overcome two shortcomings of the program, upload the ad server to upload and broadcast as a set in one of the multi-channel (12 or 16 channels) server, the server as eight channels of broadcast advertising, advertising material to address migration issues .
