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Chance of low end talking about light transmits a variety of medium application
From;    Author:Stand originally
The broadcasting television of our country is in the phase that transfers to the number from imitate. Digitlization brings suffer numerous the biggest feeling is program quality rises, program more rich and colorful. Nowadays, people rises increasingly to the requirement of the TV program, it is OK to just get TV signal not only, seek perfect picture and distinct voice even. For this, photograph advancedly, collection, make up, it is admittedly important to sow digitlization equipment, but if do not solve transmission equipment to be opposite the problem of ” of this “ bottleneck of signal lag, everything is infructuous. Generally speaking, city class TV station uses imitate equipment to undertake transmission, as a result of yuan the ageing of parts of an apparatus and make the not stable element of equipment increases greatly, often cause transmit interrupt, transmit what affect signal badly normally reach mass. So, in mature equipment on the foundation of sex of advanced sex, form a complete set of compatibility, whole, signal transmission system is adopted give priority to with digital facilities, the advantage that has use imitate equipment to be able to not be likened to.

Spot direct seeding

In TV spot direct seeding, use a number to transmit can divide commonly for two kinds of means.


The first kind is front transcribe, transmit reach later period to make use digital device entirely. Its composition is: (Of 1) signal source get, (Match place) of TV signal make affirmatory with digital facilities (digital hookup car) give priority to; (2) signal is transmitted, with the number fiber-optic transmit give priority to (use SDI fiber-optic transmit) , other is complementary (key hookup) , signal provides news orgnaization of each broadcasting television is used inside the center, provide a variety of function services. The characteristic that the video of SDI-1000 set number of my company transmits a system is: Compensate the catapult of road of annulus wire back; Two weigh the receiver of time output mouth; Sheet can transmit 60km below modular environment; Transmit quality of whole process signal not deterioration, can satisfy the requirement of this kind of means well. This kind is not had seam join, can utmost ground assures to inspect / frequency quality.


The 2nd kind is front transcribe uses imitate means, the number is used to transmit means to transmit loss of the signal in the process in order to reduce among, later period is made inspect oneself circumstance to use a number or imitate means. Chance of end of SDI-2000 series light can be in fiber-optic on transmit all heft video (Y-PB-PR, Y-CB-CR, YUV, Y/R-Y/B-Y) and two frequency; Do not establish regulator, be handled for pure number and transmit; Frequency input, output can press requirement proper motion to configuration is a balance or be not a balance by the user, below this kind of means, can assure to inspect / frequency signal quality, achieve very good result. Its composition is: (Of 1) signal source get, (Match place) of TV signal make affirmatory with imitate equipment (imitate hookup car) give priority to; (2) signal is transmitted, pass with the number fiber-optic transmit give priority to (use a number to transmit light to carry machine) , other is complementary (key hookup adds a satellite to transmit) ; (System of center of 3) TV news, offer transmission way news by the signal that delivers through matrix allocation orgnaization of each broadcasting television is used inside the center, provide a variety of function services. Because this kind of means avoided the loss of the picture signal in transmitting, can maintain higher picture quality, and need not change existing imitate equipment, small TV station is very charming in be opposite.
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