Hello,
So today i noticed on the left side of the speaker, that there are 3 sensors, both of them are together on the same place, which should be Light sensor and proximity sensor... but what about the other one more to the left? Seems pretty much like a Small LED to me.
Check this picture guys and u will see it clear enough!
http://www.sync-blog.com/wp-content/uploads/2010/06/Samsung-Galaxy-S-Series-Smartphone.jpg
Update after a test [Post #4]
Center: Proximity
Right: Light
Left: ?
Is one the light sensor for the auto-brightness thing, and the other two possibly a 'sender/reciever' set up for detecting when it's close to your face in order to turn the screen off during a call?
petethesparky said:
Is one the light sensor for the auto-brightness thing, and the other two possibly a 'sender/reciever' set up for detecting when it's close to your face in order to turn the screen off during a call?
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I believe the proximity sensor and light sensor are both together, which leaves the left sensor... i wonder what it is
May be u r right, i am dying to find out!
I will test it with a Q-tip. I pointed a flashlight with high brigthness on the sensors now, the left one doesnt seem like a LED... so that option just kinda died
Ok tested it, qtip during the call shows that the proximity sensor is the one in the CENTER.
Used a black fabric for the light sensor... with my finger over the fabric covered the left and right sensors, result: RIGHT sensor is the light sensor!
Leaves: Left sensor.... what is it?
Center: Proximity
Right: Light
Left: ?
spy cam - big brother is watching you!
beats me i hadnt even noticed it!
I would probably guess that the two closest together are a Transmitter/ Receiver pair.
It could be emitting infra-red and using a receiver to detect how far away an object is based upon the light returned.
One way to sometimes 'see' this is to use a normal camera to look at it, if it shows a white spot, there is a good chance it's emitting IR.
Logicalstep
Related
I'm having trouble with the proximity sensor on my HD2. It works if the phone is pressed up directly on my ear, but if I move it away just the slightest, the screen comes back. Is there somewhere I can access the proximity sensor settings, and give myself a bit more room? Like, say, anything inside an inch shuts off the screen?
ROM info is in the sig, and I'm using the HTC phone dialer, if that makes any difference.
http://forum.xda-developers.com/showthread.php?t=624206
Aw balls, I hate it when there's a thread for this, and my impatience with searching failed to find it.
Thanks!
Doesn't sound like that app does anything for the sensitivity, unless i missed it. it just makes the screen stay off after the sensor is activated.
However the point of the proximity sensor is to shut off the screen so your ear isn't pressing buttons. If you've got the phone far enough away from your ear to reactivate the screen, then there's no longer a need to turn off the screen to prevent ear dialing.
If you're worried about power savings, the screen should shutoff in a minute or so, depending on your screen timeout options
d0ug said:
Doesn't sound like that app does anything for the sensitivity, unless i missed it. it just makes the screen stay off after the sensor is activated.
However the point of the proximity sensor is to shut off the screen so your ear isn't pressing buttons. If you've got the phone far enough away from your ear to reactivate the screen, then there's no longer a need to turn off the screen to prevent ear dialing.
If you're worried about power savings, the screen should shutoff in a minute or so, depending on your screen timeout options
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correct, I haven't found a way to change the sensitivity for it, just turn it on or off. I believe the way the sensor works like a motion sensor in a store, either you are there or not... Hardware driven on sensitivity, not software.
Nibbley15 said:
correct, I haven't found a way to change the sensitivity for it, just turn it on or off. I believe the way the sensor works like a motion sensor in a store, either you are there or not... Hardware driven on sensitivity, not software.
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I actually posted about the sensor in another post. The sensor is just an IR LED and a photo diode. The photo diode looks for the reflected IR when the phone is near something like your ear.
The IR LED only turns on during a phone call. Try this get a digital camera with a live preview and aim it at the 2 dots where the proximity sensor is, you'll see the IR LED light up when you initiate a call
The same photo diode is used to alter the screen brightness depending on the ambient light that hits it
what feature is this? when i put the phone near my face the screen goes blank and when i move it away from my face the menu lights up, pretty cool. anyone know how it works?
Not sure of the technical aspects, but I've heard it has a sensor - much like a car has headlight sensor. When it gets dark, the headlights go on, when it's daylight, headlights shut off. Phone is the opposite, dark to your face - light off, pulled away from face, lights up. I agree, cool feature - helps to conserve battery a little bit too.
It's a proximity sensor. The screen turns off so that it doesn't accidently register the screen touching your face as a touch input (aka your face touches the 'end call' button while in the middle of talking).
Lol all phones have done this using a proximity sensor for about 4 years now;-). It's nice though! Otherwise your cheek would press all kinds of buttons during a phone call, likely the end button as one of them.
These have been around for about six years now on mobiles.
Yes, this is nothing new on phones. If you're interested, look very closely at the phone's front, to the left of the speaker as you look at it. Opposite side of the camera lens. You may have to tilt it a bit, and bright light will help. You'll see two very small transluscent spots. One is the light sensor, the other is the proximity sensor.
I dont know if this is an issue with other handsets.
I installed proximity screen off application . The purpose was to have the phone turn the screen off when i close my flip case.
However i found something strange.
When the flip case is very close to the screen the proximity sensor does not seem to detect that there is something covering it.
Is this an issue with every one ?
Any solution
Please see the videos
As you can see from the videos when i bring the shield very close the proximity sensor does not seem to detect the sheild.
Edit : However if u use ur finger this is not seen
I've noticed the same behavior, it's quite annoying because it kills one of NoLed's best features (screen off using prox. sensor).
[deleted]
Still really annoying that the original flip cover won't work with the proximity sensor. A workaround might be a third party flip case. A diy modification of to the original one won't work since if I close it AND hold whatever object that alone is enough for a positive result over the flip cover, the sensor will still not register positive [because a minimal distance between an object and the glass surface is required, see below].
mine works even with a finger...
I've done it a few times accidently when i was trying to access the notification bar while on the phone
ph00ny said:
mine works even with a finger...
I've done it a few times accidently when i was trying to access the notification bar while on the phone
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Thats the thing i was saying.
With finger i works great even if u touching the screen
Dial *#0*# and press sensor. If it vibrates, the proximity sensor is registering an object.
Maybe it comes in handy with testing.
It's working for me, thanks for the tip about the app!
edit:
Okay, I tested and found that indeed when you set the app to:
"Cover an hold to lock the screen" to say 5 seconds.
Close the flipcover.
It does not register.
However. If I set:
"Disable Accidental Lock" to .25 seconds.
Close the flipcover.
It works quite well.
Coming back to the sensor. It indeed does not register the flipcover when it's closed and touching the screen.
Weird thing is it does not register your hand anymore either.
Recreating issue:
Remove flipcover and lay it completely flat over the sensor.
Dial *#0*#.
Press "Sensor".
No registration.
Now hover your hand over where the proximity sensor is, and... How about that, no registration.
This indeed messes up NoLed's battery saving feature.
This can also be a problem when:
You set screen timeout to 10 min.
In the app's settings set "Disable in landscape" to on.
Then use an app in landscape mode.
Close flipcover while in landscape mode.
Then rotate to portrait. At this point it should start registering again and turn off screen..
The sensor does not register and screen stays on.
Drains battery.
It is a really cool idea, but it does not function properly.
It's too flaky, also when just handling your phone. I find myself accidentally turning off the screen.
Maybe if you use a case or some other cover with a different or thicker material it would work better.
I ordered a Zenuscase, I'll give it a try with that one.
Don't know how long it'll take to arrive though
reflective color
heey i found the problem , the sensor is working fine ... but when so close with any black object the light is not reflected back to the proximity sensor.(black color absorbs light).
Repeat your video with any white object and you will notice the difference..
Now i am using Autostart and it works great with samsung original flip cover (white flipcover).
you can use any white sticker on the black one.
ahmedtaha7 said:
heey i found the problem , the sensor is working fine ... but when so close with any black object the light is not reflected back to the proximity sensor.(black color absorbs light).
Repeat your video with any white object and you will notice the difference..
Now i am using Autostart and it works great with samsung original flip cover (white flipcover).
you can use any white sticker on the black one.
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ya correct, just few day back i have asked this issue to developer
http://forum.xda-developers.com/showpost.php?p=22170417&postcount=5
But it will work perfact if you use proximity + light both sensor enabled.
Color has no influence, distance between an object and the proximity sensor is what matters. I've just tested this using pieces of paper, cloth, metal and wood in white and black colors. The sensor seems unable to correctly register anything that is less than approximately 1 mm away from the glass (it may report 0 cm or jump to 5 cm). Also it seems it only reports changes of a certain minimal distance between two readings, even if the reported value remains the same as the old one. Anything below the threshold of the 5 cm reading will always result in a reported value of 0 cm, but if the effective distance between reading A and reading B was below a certain threshold, the sensor will not report a new reading of 0 cm (thus an object hovering stable over the sensor will not produce a 2nd post). I'm not sure if the sensor has a state that can be read at any time. From my tests using AutomateIt Pro, it seems only new posts can be used by apps. And if the delta between two readings is to small to make the sensor post a "new" result, then this can be problematic under certain circumstances (like trying to turn the screen off after the flip cover got closed (prox. sensor = 0 for 0 sec) and stays closed (light sensor = 10 for 5 sec) while preventing the screen from going off after an accidental wipe over the prox. sensor e.g. with the hand).
@Dr. Ketan: I've tested Power Switch (again) and I'm quite certain that for the Note + Flip Cover it only works through the light sensor (which is unsatisfying since it then won't work correctly in the dark). Covering the proximity sensor only doesn't make the app reliably react.
Power switch works ok for me with the Samsung flip cover. I have the confirmation set to minimum Abe theactivation delay set to 0 seconds.
It doesn't always work from the lock screen but works fine from the home screen or apps
Sent from my GT-N7000 using xda premium
so is it a hardware issue of software?
might it be fixes in ICS? it's fu***ng annoying! just bought the flip cover(black) yesterday and also bought smart cover app, my note's screen keeps on turn off (when flip closed) then it turns back on (flip still closed)!
Any solution for gingerbread? like proximity calibrator perhaps? (while waiting for final version of ics to come out)
Power switch will work if you use proximity + light sensor both.
Sent from my GT-N7000 using xda premium
dr.ketan said:
Power switch will work if you use proximity + light sensor both.
Sent from my GT-N7000 using xda premium
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It's so sensitive that the moment my finger move over the sensor, the shutdown menu pops up.
Any app that works with the flip cover?
Front camera, ALS, infrared sensor and what's the fourth one?
I found in the video that the led is on the left of the speaker and cannot be recognized as a hole,which is the same as S3.
I don't have any idea. I tried to search too, but I can't find any information. Anyone can help us?
I believe the fourthopening maybe a microphone for recording sound bits that can be added to the camera shot.
The four are (left to right):
gesture sensor, infrared emitter, infrared sensor (those two make up the proximity sensor, and then the camera.
Also even more to the left but usually not visible unless turned on, is the notification led.
I suggest you watch this:
http://www.youtube.com/watch?v=diLD42QafIo (starting at bout 1:30).
Hironimo said:
The four are (left to right):
gesture sensor, infrared emitter, infrared sensor (those two make up the proximity sensor, and then the camera.
Also even more to the left but usually not visible unless turned on, is the notification led.
I suggest you watch this:
http://www.youtube.com/watch?v=diLD42QafIo (starting at bout 1:30).
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IR emitter is on the top edge isn't it?
Al Gore said:
IR emitter is on the top edge isn't it?
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Yes, the emmitor for remote controlling is on the side of the top of the phone.
See here: http://i-cdn.phonearena.com/images/reviews/129885-image/Samsung-Galaxy-S4-vs-Apple-iPhone-5-08.jpg
It's the round black 'spot' on the right in the 'metal' band.
I have noticed that only 2 of my IR sensors emit red light now which earlier used to be 3. Now the sensor on the bottom left and sensor near the ear piece light up. The sensor on the bottom right used to light up earlier bit now ot doesn't. Is anybody facing the same problem ? Please answer and suggest a solution if there's any.
Thanks.
rishabh098 said:
I have noticed that only 2 of my IR sensors emit red light now which earlier used to be 3. Now the sensor on the bottom left and sensor near the ear piece light up. The sensor on the bottom right used to light up earlier bit now ot doesn't. Is anybody facing the same problem ? Please answer and suggest a solution if there's any.
Thanks.
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Yep just noticed mine isn't lighting up either.