reducing screen update size using XOR.

[Thong Nguyen]

Sounds good to me, I'm going to give it a go on WinVNC.
(PS.  WinVNC & XVNC has unofficial Zlib compression now)

..Tummy..
/----------------------------\
Thong (Tum) Nguyen
UIN: 1488812
MSBETA: 282702
tummy "at" technologist.com
http://tummy.veridicus.com
\----------------------------/

> -----Original Message-----
> From: owner-vnc-list "at" uk.research.att.com
> [mailto:owner-vnc-list "at" uk.research.att.com]On Behalf Of Leonard Tulipan
> Sent: Thursday, 18 November 1999 3:27 a.m.
> To: 'vnc-list "at" uk.research.att.com'
> Subject: RE: reducing screen update size using XOR.
>
>
> > it XOR the new screenshot with the previous one.
> > The resulting chunk of data is mostly full of zeros, which can then be
> > compressed very well by most algorithms.
> >
> Sounds good to me. But then you MUST use zlib or ssh to compress,
> don't you?
> And the server must keep the "old screen" in memory and generally
> will have
> a bit more to do.
> But it still sounds good, though it must be a major code-rewrite?
>
> Just my two cents
>
> Regards
> Leo
>
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