I wonder if somebody can give a solution of automatic backlight adjusting.
I think as a phone Athena need to be bright enough to use outdoor as well as in house. But it is a pity that the screen looks poor outdoor if the environment is already light.
My idea is to check the brightness via its built-in camera and adjust the backlight setting automatically. But it is again a pity that I am not able to develop on WM...
Can anybody give a solution? I would appreciate very much!!!
I have this feature on my Dell D620 notebook (dim sensor) and can tell, it's not significantly useful - at least I can see no difference, since the display itself is too dark for regular outdoor use.
Regarding your solution: I think the permanent camera-use would consume quite some power, wouldn't it? So the costs would be a faster leeching of the battery while the benefits are to automate a rather simple backlight-slider changing...
Any good? Camera+program vs. eye+hand?
will_990 said:
I have this feature on my Dell D620 notebook (dim sensor) and can tell, it's not significantly useful - at least I can see no difference, since the display itself is too dark for regular outdoor use.
Regarding your solution: I think the permanent camera-use would consume quite some power, wouldn't it? So the costs would be a faster leeching of the battery while the benefits are to automate a rather simple backlight-slider changing...
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Hello will_990,
I totally disagree with you. Form view points of benfit and battery.
I agree with you that the display itself is too dark. It is dark even if I manually turn it to max when I stay in sunlight. But won't software help a little bit? For me at least this will enable me to dail. Then the question is how to make a dail faster.
I do not see any clue it will drain larger power. If I move from a light place to a dark place, then the reduced backlight can then save some power. In addition, the camera does not have to stay on and keep acquiring brightness all the time. The use case could be:
1. User activate on screen.
2. Due to the event camera is on and light is acquired.
3. Software caculate brightness and suitable backlight.
4. The program set backlight and switch off the camera.
You have to check if a while of camera-on consumes more or lighting backlight high does. Assume that P1 is camera power and P2 is backlight power. t1 is calculation time and t3 is manual adjust delay. t2 is the duration you use it then. I expect
(P1+P2)*t1<(P2-P2')*t2.
Certainly, you can use your finger energy to adjust and thus save battery. Then P1=0 but P2*t3 is existing yet. Especially, in case you hold a device already dark, you have difficulty to find the slider so t3 becomes a consuming factor. I expect optimally even
(P1+P2)*t1<P2*t3.
I still looking for solutions...
Your opinion is well founded, however, in my opinion it is lacking at a certain point: I simply don't think that (P1+P2)*t1<P2*t3 could ever become true, unless you'd spend a really long time in changing the slider - or calculation time (and therefor CPU power consumption) would be set rather low...
I have to admit, though, that I don't know the variables' true values, therefor I can't verify or falsify your equations.
Anyway, it would certainly be interesting to test it, google is somewhat lacking on this topic.
Suppose a Case
The later equation deduces to
P1/P2 < t3/t1 - 1.
The battery is 2200mAh. I assume it lasts 3 hours with simple taping operation. So I suppose then 733mA is drawing normally without camera. Suppose the camera(the upper camera) boost the current double, addition 733mA, and calculation time is 10 seconds, and if you spend more than 20 seconds on handling the setting, you make it true.
Nevertheless I have to say, the number is just my estimation.
Even if the later one is false the feature is still attractive.
Looking for somebody to go on with this idea...
Could anybody to go on with this idea?
Although I usually have this option turned off because of battery life concerns, how much of the batt juice does this option actually use? I know there is a setting to set the intensity to low. I would like to start using this option because.... because I like it.
Thanks!
haptic vibration is created by a tiny motor.
motors tend to draw a lot of power (compared to other electrical components).
so while haptic vibration is nice to have it will have a noticeable effect on your battery.
only way to tell for sure it to run your battery down without it on, then run your battery down with it on, and see what the difference is.
Berserk87 said:
haptic vibration is created by a tiny motor.
motors tend to draw a lot of power (compared to other electrical components).
so while haptic vibration is nice to have it will have a noticeable effect on your battery.
only way to tell for sure it to run your battery down without it on, then run your battery down with it on, and see what the difference is.
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Lol, that is definitely not a way to tell, I doubt their person can properly create a perfect control group.
In short, the more stuff your phone does, the quicker you kill the battery. So almost every additional feature you add will affect your battery life negatively.
Mark271 said:
Lol, that is definitely not a way to tell, I doubt their person can properly create a perfect control group.
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you don't need to have a perfect control group.
run the test a couple times, check the averages and compare them.
I'm guessing that what with haptic feedback on the results will be obvious.
I had shut mine off (which was in full intensity) yesterday afternoon to test this very thing. Will report results today.
Sent from my SGH-T959 using XDA App
If you like it, turn it on. Its for tactile feedback after all, and turning it off would be crippling the phone's functionality, leading to more typos and more frustration. Its a small vibration, not the ring+vibrate that makes your phone leap past the edge of a coffee table. If you are really dying for battery life, I highly doubt the haptic feedback is the culprit or be a gamechanger.
I'm fairly certain that haptic feedback drains a substantial portion of the battery juice. One of the first thing I did after a few days of playing around with it was to disable haptic feedback. I use the softkeys a lot and having the phone vibrate each time i press then surely can't be good for the power supply. nothing scientific, but just a strong, common-sensical hunch.
appreciate the answer guys. I guess it only makes sense to try it out. Thought it might not be super accurate, it should be fine I actually have very good battery life right now. Even playing an hour or two of games like homerun 3d and armored strike I can usually last for over 15-18 hours. Will post back with the results.
Under Settings>Sound and display>Vibration Intensity you can adjust how strong the haptic feedback is.
Ive always had Haptic feedback on all phones that had it, i like it i mean yeah im sure it does help drain the battery faster but i would just turn the Intensity down a little. oh and the haptic feedback doesn't effect the keyboards btw (guessing this all has to do with which keyboard you are running but im not sure)
Believe it or not, audio generated from the speaker actually consumes more power than haptic feedback or vibration from most devices. You won't really notice any significant battery gain from disabling haptic feedback on the Vibrant. Screen brightness and backlight duration, radio operation, and media sound consume the most power on your device.
At this point, I choose not to believe that. Servo motors love juice.
-bZj
I'd just be curious if anyone would care to develop an app that could read hardware draw like we can on apps. I'd pay for that.
I dun use haptic also but if it helps to type more accurate.. Why not
low battery consumption/quick power reducing is a big issue of all htc users. is there any way to avoid the vibration on our ppc startup? if there is, we can have some extra battery life & it would be a great achievement.
I've been trying to find a way to disable "screen on" and vibration when putting the phone on the charging pad, and when the battery is full. The worst part is when the battery is full and the screen turns on - lights up the whole room in the middle of the night (then keeps turning on and off until I remove it från the charging pad). Has anyone found a way, app, or combination of settings that can disable all vibrations, sounds and screen ons caused på wireless charging, on stock-based ROMs? Can't use AOSP anymore for various reasons, there everything could be turned off easily.
I didn't use my phone for long before updating to N910W8VLU1ANJ3 from whatever was stock, but I noticed recently that the vibration and haptic feedback intensity is much less than I noticed out of the box. I remember remarking that the vibration and haptic intensities (turned up all the way to max in the settings) was actually far too strong. I'm not sure at what point things changed, I hardly have any apps installed, power savings are all turned off, but now with the settings maxed I find the vibration weak at best. Has anyone else experienced this? Should I try a factory reset? I'm thinking I should root and get going on some custom ROM's, but I haven't been too impressed yet with what's available for the non-US Snapdragon Note 4. Thanks in advance for your feedback.