Compression

Robert Schmidt rsc "at" vingmed.no
Fri, 27 Feb 1998 14:16:30 +0000


Such a pattern appeared only on your desktop background in your specific
case.  

I connected to my UNIX workstation from home via a modem.  twm draws a
dithered (red-white-red-white...) pattern in the title bar of the
currently active window.  This means I have to wait about 10 seconds
every time I activate a new window.  I immediately shut down the
vncviewer and started Timbuktu Pro.

Your suggested remedy would *not* save me a lot of time.  A proper
compression technique *would* save a lot of time, not only in your
specific case or in my specific case, but also in 80% (wild guess) of
the possible cases (excluding when the screen is filled with just noise
and rubbish, which rarely happens on modern workstations).  Agreed, your
solution will probably yield better efficiency in your specific case,
though.

Why make a difficult solution to a simple case, when a slightly more
complex solution would gain you so much more?

Dr. Joel M. Hoffman wrote:
> 
> >I suggest going one better, using some proper compression technique,
> >like gzip or PNG, instead of proprietary techniques like that.  VNC was
> 
> This would be helpful, but my point is that VNC >was< usable over a
> modem, for everything except drawing the desktop background.  But
> that's just a tiny repeating pattern, and the pattern is listed in the
> registry.  VNC could look up the pattern and send that as one of it's
> pre-encoded patterns.  That would save a lot of time.
> 
> -Joel
> (joel "at" exc.com)

--
Robert Schmidt <rsc "at" vingmed.no>
Software Developer / Vingmed Sound tel +47 67124237 fax +47 67124355
Private tel +47 22606076 WWW http://www.nvg.unit.no/~rsc

    jeg lukker et oye og ser halvt
    jeg  lukker begge  og ser  alt            -- seigmen