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Subject: Re: Broken LCD :(
From: roland (for_spam_at_gmx.de)
Date: 2004-03-21


>through. So regardless of whether or not the pixel is illuminated the same
>amount of power is used.
not exactly,IMHO - but we shouldn`t keep an eye on that.
a LCD (the display itself, not the IC to "drive" it) drains a current < 0.5 mA.

regards
roland

----- Original Message -----
From: "David Litchman" <Davel23_at_rcn.com>
To: "Lucas" <facted_at_hotmail.com>; "Rockbox development" <rockbox_at_cool.haxx.se>
Sent: Sunday, March 21, 2004 2:34 AM
Subject: Re: Broken LCD :(

> To the best of my understanding, using inverse display would make no
> difference in power consumption. In an LCD, there are tiny little crystals
> which are suspended in liquid (hence the name). If a particular cell (or
> pixel, if you prefer) is on, then a charge is passed through it which
> aligns the crystals in such a way as to allow light through. If it's off,
> then the charge is used to align the crystals so that light will not pass
> through. So regardless of whether or not the pixel is illuminated the same
> amount of power is used. At least, that's how I understand it. If anyone
> knows better please feel free to correct me.
>
>
> At 05:48 PM 3/20/2004 -0500, you wrote:
> >Are you sure that inverse screen uses less power? That really makes no sense
> >to me, though I'm not saying you're wrong. I'm just wondering. Instead of
> >having to display color on part of the screen, you have to display color on
> >all the screen and ignore a few pixels. What's the standard, black or
> >white(green)?
> >
> >
> >"Rocker" <rocker_at_shaw.ca> wrote in message
> >news:01a201c40ecb$38ed4400$6a2e4218_at_k6kzw66eczyxgw...
> >Nice idea. I have gone and adjusted all the LCd settings that reduce the
> >battery strain. For example: Inverse screen. The white text with black
> >background uses lest power to display. hide scroll bars and hide icons
> >etc...rocker
> >
> >----- Original Message -----
> >From: "Bio Hazard" <BioHazard_at_bak.rr.com>
> >To: "Rockbox development" <rockbox_at_cool.haxx.se>
> >Sent: Saturday, March 20, 2004 3:15 PM
> >Subject: Re: Broken LCD :(
> >
> >
> >shouldnt there be a "blind" option somewhere that will turn off the LCD? im
> >sure it would save battery power for blind users right?
> >
> >
> >----- Original Message -----
> >From: "Rocker" <rocker_at_shaw.ca>
> >To: "Rockbox development" <rockbox_at_cool.haxx.se>
> >Sent: Saturday, March 20, 2004 8:41 AM
> >Subject: Re: Broken LCD :(
> >
> >
> > > Score another one for the voice UI! Broken LCD? No problem eh?
> > >
> > > Cheers!
> > >
> > > ----- Original Message -----
> > > From: "Touillaud Nicolas" <Nicolas.Touillaud_at_fr.thalesgroup.com>
> > > To: <ryan+list_at_presslab.us>; "Rockbox development" <rockbox_at_cool.haxx.se>
> > > Sent: Friday, March 19, 2004 9:18 AM
> > > Subject: RE: Broken LCD :(
> > >
> > >
> > > Hi !
> > > Is your recorder is 2 month old and out of warranty ?
> > > The Talkbox is a good start, but not fully fonctionnal at this time. If it
> > > works for blind people, it will work for dead LCD.
> > > If I understood correctly, you can manage to use the talking version to
> > > navigate through the menus, the values are not talked yet but you can play
> > > with the contrast once you reach the correct entry for sure.
> > >
> > > Good luck !
> > > Nicolas
> > >
> > > -----Message d'origine-----
> > > De : Ryan Press [mailto:ryan+list_at_presslab.us]
> > > Envoyé : vendredi 19 mars 2004 17:03
> > > À : rockbox_at_cool.haxx.se
> > > Objet : Broken LCD :(
> > >
> > > Well my two-month-old recorder 2.0 from Amazon died the other day. More
> > > specifically the unit powers up but the LCD does not show anything.
> > > Sometimes I can get it to display vertical bars for a moment. It still
> > > plays whatever was in my playlist just fine.
> > >
> > > One thing I tried was to change the contrast as in the FAQ. I have a
> >pretty
> > > new version from the CVS and I'm not sure if the FAQ button sequence
> >applies
> > > to the later versions. Can someone confirm this?
> > >
> > > So I've decided to keep it as it still makes a nifty USB 2 hard drive. I
> > > was wondering if anyone on the list might have a recorder with a good LCD
> > > but a broken something-else that I could buy. Also I've read in the
> > > archives something about TalkBox - will this really be feasible to use
> >with
> > > a dead LCD?
> > >
> > > I've seen in the archives also some talk of a replacement LCD supplier in
> > > the UK. Not positive if it would fix the problem, and it seemed a little
> > > pricey. I'm in the US so shipping and payment would be a hassle.
> > >
> > > Ryan
> > >
> > >
> > >
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