Status led on amoled

[Guest snikers]

i was thinking about program, that would use a screen as led indicator of missed calls or sms. the program would blink a group of pixels in st-by mode. i don't know anything about programing for WM but maybe someone can use this idea. what do you think?

sorry for my english 

[Guest sekobati]

i was thinking about program, that would use a screen as led indicator of missed calls or sms. the program would blink a group of pixels in st-by mode. i don't know anything about programing for WM but maybe someone can use this idea. what do you think?

sorry for my english 

nice idea really, hope one of the developers adopts it :)

[Guest Ender Psp]

i was thinking about program, that would use a screen as led indicator of missed calls or sms. the program would blink a group of pixels in st-by mode. i don't know anything about programing for WM but maybe someone can use this idea. what do you think?

sorry for my english

That wouldn't be too hard to implement. For some people would be convenient, I guess.

However, it would have to either keep the screen on or turn it on and off from time to time. I'd rather use something audible, like PhoneAlarm does for missed events, personally.

Edited January 10, 2010 by Ender Psp

[Guest KILLvino]

really good idea. would love to use this. one of the things missing is a color LED on the O2 and this would fix it nicely.

[Guest snikers]

So, about power consumption. samsung says that amoled use less power because black pixels don't glow and screen has no backlight. this leads us to 2 posibilities. 

1. screen is on whole time - display black. from time to time it lights up a group of pixels.

2. screen is off and from time to time it inicializite and lights up a group of pixels

Of course, the touch and buttons are locked and when there is no missed calls/sms device goes to st-by mode as always. The question is - which of these methods uses less power.

[Guest deepower]

+1 This idea is great!

But a while ago i read something about a S60 phone, which has a lightsensor. And that sensor has a built in LED but it was disabled from the device (by software, of course) maybe our's have something like that, too??

anyways, i believe that the first method (snikers's post) consumes less power becouse every time the app commands that the screen should be turned on (and off) that uses more CPU. (in my nooby vision) so keeping the screen on all the time is better i guess

Edited January 10, 2010 by deepower

[Guest snikers]

+1 This idea is great!

But a while ago i read something about a S60 phone, which has a lightsensor. And that sensor has a built in LED but it was disabled from the device (by software, of course) maybe our's have something like that, too??

anyways, i believe that the first method (snikers's post) consumes less power becouse every time the app commands that the screen should be turned on (and off) that uses more CPU. (in my nooby vision) so keeping the screen on all the time is better i guess

i have found datasheet of light sensor http://www.rohmsemiconductor.com/downloads...CNA09016_wp.pdf similar to omnia's shown on photos here http://www.modaco.com/content/i8000-verizo...ep-disassembly/ http://www.modaco.com/index.php?act=attach...st&id=39805 but it don't have any LED's inside. if you know what model of light sensor is used in omnia, please write.

proximity sensor has LED but it's a IR LED so it's useless for our purpose

[Guest Uboy]

It must be possible to show something on the screen without disturbing the cpu since it shows a nice battery animation when powered off. :)

[Guest a7mdo]

i think its a great idea ...maybe a vibration like every 10 secs like the one when u are scrolling...or will take much battery because i dont think it does

[Guest dwallersv]

really good idea. would love to use this. one of the things missing is a color LED on the O2 and this would fix it nicely.

The i920 has a tiny tricolor LED in the upper right corner that is relatively bright, and can display any color RGB color combo (only limitation is each channel is full-on, so the colors are limited to red, green, blue, cyan, yellow, magenta, and white). This is the LED that functionally replaced the useless red LED integrated in the Omnia power button.

It is programattically accessible. And, worth mentioning again, it's quite bright and noticable.

Doesn't the 8000 have this LED? If not, how is it indicating charging / completed charging?

Edited January 10, 2010 by dwallersv

[Guest deepower]

You unpug the charger, and then check from the batt indicator (on the screen) :)

Since theese two are *really* close relatives of each other (even the mainboard) maybe, just a small chance, we might have that too.

Maybe we should look at i920's roms?

PS. When i was experimenting wiht a serial COM driver i stumbled upon a COM port that is connected to the light sensor. Maybe , if we have the hardware, the LED can be accesible from the same COM port, huh?

we might make a big discovery,

deepower.

Edited January 10, 2010 by deepower

[Guest janekx]

So, about power consumption. samsung says that amoled use less power because black pixels don't glow and screen has no backlight. this leads us to 2 posibilities.

1. screen is on whole time - display black. from time to time it lights up a group of pixels.

2. screen is off and from time to time it inicializite and lights up a group of pixels

Of course, the touch and buttons are locked and when there is no missed calls/sms device goes to st-by mode as always. The question is - which of these methods uses less power.

AMOLED on O2 is display that not use backgroud light to show anything on screen, it emits light inself in each pixel so black is no pixel leds emits light. So on / off the display when show black in not diference :)

[Guest deepower]

@janelkx

so it doesnt matter weather the screen is turned on or off in terms of power consumption?

=====

On further investigation i found out that there's no LED located near the Light/Proximity sensor.

PS. the image of the sensors are from: Omnia 2 Disassembly

[Guest janekx]

@janelkx

so it doesnt matter weather the screen is turned on or off in terms of power consumption?

=====

On further investigation i found out that there's no LED located near the Light/Proximity sensor.

PS. the image of the sensors are from: Omnia 2 Disassembly

Yes doesnt matter, it is like have 480x800 very small leds

for more info

http://en.wikipedia.org/wiki/Active-Matrix_OLED

[Guest snikers]

AMOLED on O2 is display that not use backgroud light to show anything on screen, it emits light inself in each pixel so black is no pixel leds emits light. So on / off the display when show black in not diference :)

That is what i wrote "no backlight"

display driver consume some amount of power and in that post i was wondering if going from st-by mode (modern display driver has st-mode) to power-on mode (showing black screen) take more or less power than staying in power-on mode. but people noticed that CPU usage for this operation could use more power so that is the main problem now.

Is there some developer, who would try to make this program for our i8000 B)

in my opinion beter option is to wake up the device show "led" and go to sleep mode. 

ps. i8000 don't have LED's. Charging is indicated by battery icon and notification

ps2. again sorry for my english

[Guest Apolousm]

eyyy eyyy excelent idea... let's do it B) ... any cooker arround here? :)

[Guest janekx]

As I found in http://innovator.samsungmobile.com Omnia 2 some users think that have backlight.

http://innovator.samsungmobile.com/bbs/dis...searchTextForm=

[Guest snikers]

As I found in http://innovator.samsungmobile.com Omnia 2 some users think that have backlight.

http://innovator.samsungmobile.com/bbs/dis...searchTextForm=

Those guys are retards. It's like saying plazma TV has backlight becouse in menu is a setting "backlight brightness". Windows was made for lcd technology and in screen settings you will find words like "backlight". AMOLED driver use a backlight time setting for dimming a screen.

As for the topic, we still don't have a developer for this idea :)

[Guest babyjosef17]

Those guys are retards. It's like saying plazma TV has backlight becouse in menu is a setting "backlight brightness". Windows was made for lcd technology and in screen settings you will find words like "backlight". AMOLED driver use a backlight time setting for dimming a screen.

As for the topic, we still don't have a developer for this idea :)

Hi. I never dove into these details as for me it doesn't really matter. But since we are in the topic already.

What is the simple answer for this. Does our gt-i8000 have back light? Yes or no.

Edited January 17, 2010 by babyjosef17

[Guest bluhound]

NO. It does have a backlight. Not just the Omnia II but all displays which uses AMOLED (This includes some Nokia mobile phones like the N86 etc.)

Taken from Samsung's site:-

Traditional LCD on the left and the new AMOLED on the right. Note the missing backlight.

Taken from http://omnia.samsungmobile.com/omnia2/amoled/amoled.html

I suspect the reason to why the OS (not just WM but Symbian too) still mention 'backlight' is because people are accustomed to the connection between brightness and backlight for over a decade. If they have just decided to suddenly remove all traces of the word 'backlight', the less tech savvy people will be all too confused....

Also remember, WM 6.5 is technically a souped up version of the older WM (it is still based on the 2004 Windows CE 5.2 kernel) and AMOLED was not yet mainstream in 2004 which might explain why 'backlight' still exits on it.... Just my own point of view.

Edited January 17, 2010 by bluhound

[Guest jacobgong]

i was thinking about program, that would use a screen as led indicator of missed calls or sms. the program would blink a group of pixels in st-by mode. i don't know anything about programing for WM but maybe someone can use this idea. what do you think?

sorry for my english

if you look at the screen in a completely dark room, you can see even the OLED screen is not completely black when turned on.

Yes in theory you can display black without using any power but in practice the screen controller and the active matrix itself uses power, and isn't capable of real black in this case.

[Guest Snow02]

And just to clarify, there is in fact a backlight. This was necessary to prevent the washing out of the screen in sun/bright light. Try turning it off and using the phone outdoors during the day, it's impossible. At night/indoors you can turn it off and it drastically increases battery life too. A program or script that toggles this setting at a certain time of day might be a good idea.

The difference between lcd and amoled is that lcd has a backlight by necessity, and amoled has one to improve functionality.

But here's a question, are OLED panels still subject the lifespan issues they have been in the past? i.e. blue oled's go out in about 1/3 the time of green, and overall lifespan is shorter than that of an lcd? Just wondering if the blue might start to die in the useable life of the phone.

Edited January 18, 2010 by Snow02

[Guest zangen]

It would be great to have a script that turns the backlight on and off considering its such a drain and is not required at all indoors, I have been hoping to find one that uses the light sensor.

[Guest Snow02]

It would be great to have a script that turns the backlight on and off considering its such a drain and is not required at all indoors, I have been hoping to find one that uses the light sensor.

NuShrike did something like that for the M900, which is based on the same chipset, so could be an easy port if someone wants to look into it and he would release the source.

http://forum.xda-developers.com/showthread.php?t=446434

Edited January 19, 2010 by Snow02

[Guest snikers]

And just to clarify, there is in fact a backlight. This was necessary to prevent the washing out of the screen in sun/bright light. Try turning it off and using the phone outdoors during the day, it's impossible. At night/indoors you can turn it off and it drastically increases battery life too. A program or script that toggles this setting at a certain time of day might be a good idea.

The difference between lcd and amoled is that lcd has a backlight by necessity, and amoled has one to improve functionality.

But here's a question, are OLED panels still subject the lifespan issues they have been in the past? i.e. blue oled's go out in about 1/3 the time of green, and overall lifespan is shorter than that of an lcd? Just wondering if the blue might start to die in the useable life of the phone.

AMOLED DOES NOT HAVE ANY BACKLIGHT. All so called backlight functions are simulated by brightness changing.

Read the picture! or show opened AMOLED screen with backlight plate. I saw (had in hands) monochrome OLED's and they don't have backlight - they don't need backlight, every pixel is an organic LED and emits own light.

ps.Assume AMOLED has backlight. Please tell me how does it improve screen visibility. How the screen regulates the amount of light going from backlight through screen. In lcd you have to polarize light, and so on.