florenzi at gmail.com
Fri Jun 6 19:49:06 CEST 2008
How about keeping VGA, and making the screen bigger then 2.8"?
Just an idea,
On Fri, Jun 6, 2008 at 5:34 PM, The Rasterman Carsten Haitzler
<raster at openmoko.org> wrote:
> On Fri, 6 Jun 2008 20:16:15 +1000 (EST) "NeilBrown" <neilb at suse.de> babbled:
>> On Fri, June 6, 2008 3:39 pm, Carsten Haitzler wrote:
>> > we can just drive the vga screen at qvga. no need for scaling - just
>> > change the
>> > output at the lcd controller level. but it is a waste to pay for a vga
>> > screen
>> > when we won't use it. also it does look "blocky". it isn't about glamo or
>> > not -
>> > it's separate to glamo entirely. simply - how important is a vga screen...
>> > really? how many people out there can really see the difference? be really
>> > honest. stop thinking "my specs are bigger than your specs". scan u REALLY
>> > see
>> > all the pixels on a vga screen of that size. i bet to most people its all
>> > a
>> > blur - a qvga screen looks identical to them. only to a minority who have
>> > very
>> > good eyesight does it really make a difference, but this is just my "bet".
>> > i'm
>> > asking the question - and hoping for real honest answers.
>> Well, it's hard to know without having an actual device to look at, but
>> I'll try....
>> My notebook has a 15 inch 1920x1200 monitor which comes to 147dpi.
>> The Freerunner is 285dpi, the pixels are very close to half the width/
>> height of my pixels.
>> So at first I thought "wow, that's tiny. I don't think I need them *that*
>> small" - and I have better than average eye sight.
>> Then I resized my browser to 640x480 and found I could read it quite
>> well, though lots of web pages don't quite fit.
>> I took a screenshot of the window and displayed it at 50% in the GIMP.
>> So presumably that is how the image could look on the Freerunner.
>> If I hold this image at the same distance from my eye that I usually
>> use a notebook (say 55cm) the text looks like it would be too small
>> to comfortably read, though the reduction of resolution has made it
>> blurry and I cannot be sure.
>> If I hold it at the distance that I would typically read a book, which
>> is closer to 35cm, the text is still a bit small, but I think I would
>> be quite happy reading it - except that the low resolution has made
>> it quite blurry. If it were still 640x480, but the same size I think I
>> could read it quite happily.
>> So my conclusion is that for reading textual content, the higher resolution
>> probably is worth it for me. I doubt it would be of much value for
>> photo for videos. I just tried watching a video at 320x240 at 147dpi,
>> and it was quite acceptable for the physical size.
>> The question then becomes - how often will I be reading pages of text
>> on my Freerunner. I really don't know.
>> However maps are very similar to textual content - sharp contrast and
>> the potential for lots of information in a small space.
>> I tried a similar experiment comparing a google-maps image
>> 320x240*147dpi and simulated 640x480 at 285dpi, and the 320x240 felt
>> very constrained - not enough information on the display.
>> The 640x480 felt more comfortable and - I think - would have been
>> readable if I had the real resolution.
> cool. someone actually has done a did some experiments on themselves! well done!
> this is just the kind of stuff i was hoping for. this is one of the best
> responses. it's subjective, but using objective measurements as best possible
> with the equipment you have. good!
> so yes - the blurry scaled down in gimp @ qvga would be a qvga screen on a
> freerunner. vga would be sharper. then again - until u have a 285dpi screen
> it's hard to really compare! :) but this is the best you can do! nice! :)
> opinion noted for the future! :)
>> Maybe you could ask again we have all had our Freerunners for
>> a couple of months.
>> What was the story with 320x240x25fps video again? Is it possible
>> with the available memory bandwidth?
> argh! :)
> Carsten Haitzler (The Rasterman) <raster at openmoko.org>
> Openmoko community mailing list
> community at lists.openmoko.org
More information about the community