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Re: HMD stuff; Tekgear

From: James Davidheiser <>
Date: Mon, 4 Dec 2000 17:17:25 -0500 (EST)

> 
> I would recommend adjusting the resolution numbers to what they really
> are... so instead of the Sony PLM-A35 being 800x225 it should be 266x255
> which is what I think it really is, the horizontal is usually /3 to get
> the resolution with the lower displays.. they try to make it sound bigger
> than it really is...

I did do this conversion with all of the other displays.  The factor of 3
of which you speak generally comes from the fact that there are 3 pixels
per each effective dot (RGB).

The resolutions are usually easily calculable from the pixel count, and
this has given me the correct numbers for every other display I looked at.  

However, I have never seen a display rate the lines of resolution scaled
by this factor of three.  There is a typo on the page, both the A35 and
the A55 should be by 225, not 255.

The 800*225 number is something I got from several pages advertising the
display and such.  I am not completely convinced this number is incorrect
yet.  While I agree that it makes more sense the other way, I have never
seen a manufacturer lie in this particular way.  I also somewhat vaguely
remember there being a discussion a while back on the list which said that
the 800*225 number was correct, although that could be my imagination.

For the time being, I will add a disclaimer stating that I am not sure
about the sony, and stating the other possible interpretation.  The good
thing for myself is, I don't plan on using a sony, so I personally don't
care.  I will however add the info, for the benefit of others who may be
considering a glasstron

> 
> Bryan
> 
> On Sat, 2 Dec 2000, James Davidheiser wrote:
> 
> > For those interested, I have put up a very basic page listing side-by-side
> > comparisons of different prospective hackable displays.  I plan on adding
> > to this page as I see different things on the list and so forth.  There's
> > nothing pretty or fancy about it, I pretty much put it together quick to
> > keep a record for myself for easy reference to glance at.  With all these
> > different names of HMD's, I get confused alot.
> > 
> > Also, has anyone else had trouble reaching tekgear's website?  I haven't
> > been able to get thru from three different servers on three different
> > networks.
> > 
> > The URL for the comparison page is:
> > http://jamie.dyn.dhs.org/HMD.htm
> > it's running on my own home personal server (on a DSL line) and so may be
> > somewhat slow.  If the list becomes anything more than the really basic
> > jotting down of notes that's there so far, I will move it to a real
> > server.
> > 
> > 
> > 
> > 
> > James Davidheiser
> > Drexel University
> > Department of Physics
> > 
> > "Tell a man that there are 400 billion stars and he'll believe you"
> > "Say a bench has wet paint and he has to touch it"
> > 
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> > 
> 
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