Re: Finally!

Number 6 ([email protected])
Fri, 16 Jun 1995 18:53:41 +0100 (BST)

OK, ok, folks- A phenomenon that I feel is worth mentioning. I just
finished a little experiment, and downloaded an uncompressed .wrl from
lightscape. It was about 9 MB. It took ages, and this was an a T1. I
then got my brother to download the same model via Compuserve's Internet
access on a 14.4k modem, and it was almost BLINDINGLY quick- I am talking
about 4 hours on the T1, and 50 MINUTES on the 14.4. I think to a little wonder knows as LAPM. As far as I know, this is a compression
protocol built into modems, which involves the use of a compression
'dictionary'. On text files, where similar letters are frequently used, a
position marker is set and the letter transmitted once, not x-thousand
times. So, when downloading a complex .wrl, which has MILLIONS of often
repeated words and phrases, the cunning modems negotiated with each other
to only send each bit once! Why can that be built into a vrtp 'virtual
reality transfer protocol'?

BCnU

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| James Forrester |
| [email protected] |
| http://www.york.ac.uk/~jmf101/ |
| Madness take its toll. No chanb> given. |
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