[maemo-developers] [maemo-developers] RE: brightness Re: [maemo-users] Re: Storage/Sleep Issues..

From: Igor Stoppa igor.stoppa at nokia.com
Date: Thu Jan 25 15:33:36 EET 2007
On Thu, 2007-01-25 at 14:54 +0200, Salminen Karoliina.T
(Nokia-M/Helsinki) wrote:
> Hi,
> >> > Nothinig prevents you from creating a sysfs entry wich returns
> >> > 
> >> > tahvo_get_backlight_level()
> >> > 
> >> > or even a proc one, if you really are into that sort of thing.
> >> 
> >> There is such entry - 
> >> /sys/devices/platform/omapfb/panel/backlight_level
> One related thing would interest me:
> - would it be possible to crank the level up further than the 127 the 
> number in /sys/devices/platform/omapfb/panel/backlight_level states when
> the
> display plugin has the maximum setting?
i'm no hw guru, but afaik, no, we should already be providinig the
maximum brightness possible.

> As I am part of the engine monitor and EFIS project, I would be
> interested
> if there would be some way to increase the daylight readability in
> challenging
> environment with direct sunlight hitting the screen on airplane panel
> through
> a clear canopy above the clouds where there is nothing blocking the
> sunlight coming
> with full power directly to the display where you are supposed to see
> some gauges.
> The N800 display already is somewhat better than the N770 for that, but
> more would
> be of course always better than less taking in addition that panel
> mounted airplane 
> EFIS displays commercially available use ultra high brightness displays.
> In this environment the battery consumption is non-issue because
> the device is plugged all the time to charger. Ok, it might be also so
> that
> the 127 is the maximum the physical display panel can output and no more
> can be
> achieved, but I was just wondering if it wasn't. This may be fruitless
> speculation, but
> I would be glad if anybody of the hw gurus could enlighten me some? Thx.
> Best Regards,
> karoliina
Cheers, Igor

Igor Stoppa <igor.stoppa at nokia.com>
(Nokia M - OSSO /Helsinki Finland)

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