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Originally Posted by towny
are you saying it is not possible for a box to be made that would work with all three? Or that one modulation method could never work perfectly adequately for all three?
I'm afraid that when big corporations with big sales and marketing departments get involved with technology, the outcome is certainly not guaranteed to be in the best interests of the customer. Just look at the ridiculous format war now going on over the various kinds of DVD and CD, or the old VHS/Betamax war, or the way the world ended up with three different colour TV systems. I have no doubt that the various manufacturers can all advance arguments in favour of their own product.
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Yeah sorry mate. A slight attack of Fosters induced overreaction!!! ;-)
But yes thats exactly what I'm saying. The three modulation methods are required as the mediums the signals have to travel through are different.
They could produce a single box which could handle all three types of signal, but it would effectively require three demodulators and hence would be more expensive than any of the stb's available now. I have test equipment which can handle the different signal formats, but we are talking 15 or so grand a time.
The different transmission methods werent decided upon by manufacturers, it was the DVB. Thats why the three methods are known as DVB-C, DVB-S and DVB-T. The american ATSC Digital standard again uses different methods to us.
The different colour systems were'nt decided by manufacturers either, ultimately its the governments that decide what will be the standard.
The VCR/CD/DVD standards are more of a manufacturer battle as the accepted standard then needs to be licensed for other companies to use.