On Sat, 12 Apr 2008 02:50:11 +0200 "Marco Trevisan (Treviño)" <[EMAIL PROTECTED]> wrote:
> Since Freerunner won't have an hardware light sensor to set its LCD > brightness, I got some ideas about smartly changing the luminance of > the GTA02 screen to save its battery (still with an unknown life > time :/). Of course they aren't and never will be precise as an > hardware sensor is, but it's the only thing we have: > > 1) Setting the brightness following the hour of the day: also if the > phone can't know if it's sunny or cloudy, neither if you're indoor or > outdoor, it's clear that just knowing the hour of the day, the date > and your latitude (to be set once via GPS) the phone can easily know > when the sun will rise and set, and so it will be possible increasing > or reducing the LCD brightness. > Also if you're indoor, I guess that when the sun is "gone" you won't > need so much luminance... > > 2) Using personal profiles that follow your habits: you could define, > for each hour of each week day the "presumed" luminance, using > something like a calendar. I mean, if on working-days I generally > stay indoor every day from 8:30 to 13:00 and from 15:00 to the 19:00 > I figure that on these intervals I don't need all the LCD power, so > I'll set in my "calendar" that on such interval I'll be indoor... > I guess that many of you would follow a routine durning the week, why > don't educate your phone for it!? > > 3) Setting the luminance following the weather. Of course I've no > light sensors, neither a barometer :P, but if I've a working > connection available I could use the weather data downloaded every > few minutes (60, for example) from internet to change my screen > brightness (of course merging these informations with points 1 and 2) > > What do you think about them? > I do think that they are really simple to implement, and that also if > they won't guarantee a perferct result, they could be a "smart" > workaround. > GPS signal drops in cloudy conditions, and is usually non-existent indoors... this just leaves the 24hour cycle of the spin of the earth to worry about, all we need know is position, and rise/set times to sort that problem? -- Ewan Marshall (ewanm89/Cap_J_L_Picard on irc) http://ewanm89.co.uk/ Geek by nature, Linux by choice.
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