Video frequency synchronization broadcast system
system characteristic:
This system is uses in the exhibition hall or the dem***tration hall video frequency synchronous system, it can on the self-synchronization multi-Taiwan computer broadcast video frequency content, thus completes multi-screen splicing, the combination dem***tration special video frequency effect.
With other video frequency synchronization plan comparison:
一． Simultaneously opens the video frequency document with the network or the serial port single mode
Merit: The realization is extremely simple, but only carries on the synchronization to the video frequency outset time is actually cannot achieve in completely the broadcast process throughout the synchronization.
Shortcoming: The modern operating system all right and wrong real-time operating system, in the system has many duties to carry out in turn by the time piece way, even if therefore the use software and ha***are disposition identical broadcast computer, only depends on the synchronized video frequency the outset time, along with broadcast march, between each computer can appear the latency, and this latency can accumulate gradually and more and more ***ious.
二．Ha***are synchronization broadcast machine
Merit: Uses is the real-time operating system, uses the ha***are completely for the video frequency decoding, therefore the video frequency broadcast synchroni*** is extremely good, only needs to guarantee the video frequency is simultaneously starts to broadcast, can realize in the broadcast process the synchronization.
Shortcoming: The support video frequency form are few, very difficult to support each kind of emerging media form, for instance RealVideo, H.264 and so on.
Not easy to replace the video frequency document, when the use the flexibility quite is bad.
The cost is high, after the damage services or the replacement cost very is also high.
三． Video signal broadcast way
Merit: Uses a server to carry on the video signal the broadcast, the operation convenience and the flexibility is all good.
Shortcoming: Only can provide in view of the multi-Taiwan broadcast computer broadcast same video frequency content situation, very difficult simultaneously to broadcast several different signals and to guarantee their synchronization.
Is unable to achieve the video frequency the true synchronization, because RTP/RTCP agreement itself in order to fault-tolerant and so on reas***, is the permission big time delay.
When needs to broadcast when the video frequency resolution is big, is very high to the server and the local area network band width request.
This system main characteristic:
• In the synchronized local area network on the computer video frequency broadcast, between various computers error only is 30 milliseconds (1-2 video frequency frame, human eye is very difficult to realize).
• In the broadcast process entire journey use synchronized signal carries on the synchronization to all broadcast machine on video frequency, therefore cannot appear the accumulation the time delay error.
• Does not limit may control computer quantity, you will only h***e to possess the computer turning on local area network then.
• Supports all conventional video frequency form, the software can automatically use the video frequency decoder which in the system installs.
• May increase the new broadcast computer as necessary, only must enter its company the local area network, and carries on the corresponding establishment on the main engine then.
Now you may free obtain our system test compact disc, please relate and informs your concrete demand with us.
The successful case introduced that,
一. In dem***tration hall application:
Mixed in the dem***tration hall has used the multi-Taiwan LCD monitor and the projecting apparatus, was resp***ible by ours system for all equipment to provide synchronized the video frequency supply oscillator, has obtained the very good broadcast effect.
二． In person or household who refuses to move and bargains for unreasonably high compensation when the land is requisitioned for a c***truction project theater application:
Has used the Asian area biggest area projection curtain wall in the person or household who refuses to move and bargains for unreasonably high compensation when the land is requisitioned for a c***truction project theater, our software is resp***ible on two independent computers to carry on the high clear video frequency the synchronized broadcast, this video signal is transported to two video frequency fusi*** in, finally carries on the video frequency by 4 University of Taiwan projecting apparatus the broadcast.
三． Is unfolding the application which can hit:
In unfolds meets, participation business has used five ordinary computers, separately broadcasts the different content video frequency document which manufactures in advance, and uses this system to achieve the broadcast the synchronization.