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front camera on htc hd 2

i see in fron of my htc hd2 in left side two small lens is that a fron camera.

No. It's not.

alibox87 said:
i see in fron of my htc hd2 in left side two small lens is that a fron camera.
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One is a proximity sensor (turns off the screen when it's up against your face during a call) and the other is a light sensor (for the backlight's auto-dimming function)

its how the gov't is tracking you.
actually i'm glad as all the other phones get front face cameras i won't have one, no one needs to see my ugly mug.

Lol awesome first post!

it is an eyescanner? or a whole to feed the pink elephants?

I have some Risperidone for you...

Front cameras will be the cause for many divorces or split-ups...

secano said:
Front cameras will be the cause for many divorces or split-ups...
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Actually with any luck front cameras will prevent many people from getting together in the first place

dont think its coming to this country but the rest of the world uses it, at one point last year we were headed in that direction but the minmo7 devices turned it down unless the companies are still waitin to unleash the devices but the network can handel the data

sirphunkee said:
One is a proximity sensor (turns off the screen when it's up against your face during a call) and the other is a light sensor (for the backlight's auto-dimming function)
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If you want to get real technical about it, one of the holes is a light sensor that is sensitive to daylight for backlight brightness control and IR for proximity sensing, the other hole is an IR led that turns on during a phone call. When you hold the phone next to your face the IR led bounces off your skin and back into the 1st hole telling the HD2 that you have it near your face.
Try this, initiate a cell call on the HD2, then hold a video camera over those 2 holes. you'll see the IR LED lit up. It only lights during a cell call. Even better if you have a sony camcorder with nightshot mode activated, though just about every CCD/CMOS sensor is sensitive enough to IR even with the internal IR filter in place that you should be able to see it
Im going to take a guess that the IR led isn't just constantly lit, but likely pulse width modulated to some frequency the HD2 recognizes that way the light sensor can tell the difference between the IR bounce back and ambient light. I couldn't tell with my camera that it was PWM, but it could quite likely be at a frequency greater than 30hz, which you wouldn't be able to see on a standard video camera at 30fps. you'd need a high speed camera, or another IR sensitive photo diode attached to an oscilloscope.

d0ug said:
If you want to get real technical about it, one of the holes is a light sensor that is sensitive to daylight for backlight brightness control and IR for proximity sensing, the other hole is an IR led that turns on during a phone call. When you hold the phone next to your face the IR led bounces off your skin and back into the 1st hole telling the HD2 that you have it near your face.
Try this, initiate a cell call on the HD2, then hold a video camera over those 2 holes. you'll see the IR LED lit up. It only lights during a cell call. im going to take a guess that the IR led isnt just constantly lit, but likely pulse width modulated to some frequency the HD2 recognizes that way the light sensor can tell the difference between the IR bounce back and ambient light.
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Awesome, thank you for the white paper I love that kind of stuff!

If it is quite dark, you can see the LED blink about once a second...

Heyy all,
Actually the guy was asking if that's a FRON camera. Yes it is!!!

chvvkumar said:
If it is quite dark, you can see the LED blink about once a second...
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I think you're looking at the notification led on the far left of the earpiece speaker grille. I highly doubt you can see the IR LED with your naked eyes. Were talking about the two dots under the glass just to the left of that.
matyoka said:
Actually the guy was asking if that's a FRON camera. Yes it is!!!
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That sensor is not a front camera. its a photodiode http://en.wikipedia.org/wiki/Photodiode i guess you could call it a 1 pixel camera lol

d0ug said:
I think you're looking at the notification led on the far left of the earpiece speaker grille. I highly doubt you can see the IR LED with your naked eyes. Were talking about the two dots under the glass just to the left of that.
That sensor is not a front camera. its a photodiode http://en.wikipedia.org/wiki/Photodiode i guess you could call it a 1 pixel camera lol
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Believe me i can tell if it is an LED otherwise I wouldn't be doing my masters in electronics
and to answer your question, it definitely not the notification LED or the light bleeding from it into the adjacent space. when a call is in progress and it is very dark around, you can just make out the faint blinking.

alibox87 said:
i see in fron of my htc hd2 in left side two small lens is that a fron camera.
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Click to collapse
Wait for HD3 to solve the problem just for you

[Q] Ambient light sensor and backlight

According to the Leo/Linux status wiki (http://htc-linux.org/wiki/index.php?title=Leo/Status) the Ambient Light Sensor is still not working properly.
That would explain why auto backlight adjustment does not work.
However, when in the phone screen the light sensor seems to work in that the screen goes dark when I cover the light sensor, as expected.
So I am curious as to the status of this regarding auto backlight specifically, does anyone have any more concrete info?
Perhaps there are separate light sensors? Or perhaps the light sensor only works in a limited fashion for the time being?
Just curious, not complaining
(P.S. the free "Battery Level" widget from the Market has worked well for me in the absence of auto backlight adjustment, in case others find it useful)

well there's a proximity sensor on the phone that comes into play while you are in an active call. it disables the back as you put the phone to your ear. you were simply simulating that action by covering the sensor with your hand.

Ah ok! Thats what the proximity sensor is. That is indeed marked as working on the status wiki, so that makes sense.
Thanks!

[Q] Anyone able to locate just where the light sensor is?

This may be a total noob question, but I was just curious to know the exact location of the light sensor because I cant seem to figure out where it is located.

EricSS619 said:
This may be a total noob question, but I was just curious to know the exact location of the light sensor because I cant seem to figure out where it is located.
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That dot that looks like a front facing camera (FFC) - that is your sensor there that controls screen on/off on calls and the auto brightness.

riggsandroid said:
That dot that looks like a front facing camera (FFC) - that is your sensor there that controls screen on/off on calls and the auto brightness.
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Are you sure, because when I ran sensor test that dot did change the proximity sensor values, but the light values wouldnt change even if I covered it completely.
The only way I was able to change the light value was to move the whole phone into a darker or brighter location, but not by finding a pinpoint sensor on the phone.

Edit 2: When I cover the proximity sensor dot (the obvious one) with my finger and shine a light at the phone, nothing happens, and when I remove my finger from the dot and shine a light right on it, the screen gets brighter. I suspect both sensors are in the same spot (the plastic dot you see probably transmits ambient light to the light sensor as well as housing the proximity sensor, in the way many computers use a little clear/frosted plastic piece to indicate the status of an LED that is buried in the chassis.
Try it with a flashlight and see if you get different results.

If you are interested in disabling the light sensor go into settings and manually set your brightness.
I have to say the proximity sensor works much better than on my Hero.
Sent from my HTC Evo Shift 4G

i noticed the proximity sensor responds much faster than the one on my Evo

The light sensor is just to the right of the proximity sensor under the speaker grill. Turn on auto-brightness and test it with your finger.
Sent from my PG06100

BrandoKC said:
If you are interested in disabling the light sensor go into settings and manually set your brightness.
I have to say the proximity sensor works much better than on my Hero.
Sent from my HTC Evo Shift 4G
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thats because i dont believe there is a proximity sensor on the hero.

karnoff said:
thats because i dont believe there is a proximity sensor on the hero.
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I guess that's why it would be working better!

[Q] Ambient light sensor not present?

Just as the title says-
I am not able to locate the light ambient sensor on my A500 tab- My previous A500 got replaced by acer because the speakers were defective in some way-
I have read that the light sensor is located below the volume rocker and rotation switch on the black glass and can be seen under bright light- i tried every way to find it no success.
I tried "proximityscreenoff" and "sensorlist" from the market. Both of the freewares listed an ambient light sensor on my device as -"Lite-on al3000a Ambient Light sensor"-
BOTH THE APPS COULD NOT GET ANY DATA FROM THE SENSORS :O-
DO we even have a sensor? or is it just me without it?
Can someone please use the apps and tell me if any data is being collected from the sensors?
Highly appreciated- thanks you

I tried with Sensor List and it does indeed show up the sensor, but doesn't seem to be getting any data from it. So it's not just your tablet.

Same thing with "AndroSensor", it shows it but no data change in it either. Hopefully we can figure out what the issues is? Are both of you using the factory install rom? Or a rooted one with a tweaked kernel?

sda.171 said:
Just as the title says-
I am not able to locate the light ambient sensor on my A500 tab- My previous A500 got replaced by acer because the speakers were defective in some way-
I have read that the light sensor is located below the volume rocker and rotation switch on the black glass and can be seen under bright light- i tried every way to find it no success.
I tried "proximityscreenoff" and "sensorlist" from the market. Both of the freewares listed an ambient light sensor on my device as -"Lite-on al3000a Ambient Light sensor"-
BOTH THE APPS COULD NOT GET ANY DATA FROM THE SENSORS :O-
DO we even have a sensor? or is it just me without it?
Can someone please use the apps and tell me if any data is being collected from the sensors?
Highly appreciated- thanks you
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Click to collapse
I got Sensorlist and tried it and I do get data from it.
xhz/xxxx or xxxxxms and a red line. The upper limit is 227 and lower limit is -227 and the red checked number changes. It's nowhere as quickscrolling as the other sensors but I get a jagged red line moving across.

okay guyz i think i figured this whole thing out most probably-
I just came back from this electronic store, i closely examined the iconia on display- a500 - noticed the black glass under the volume rocker and rotation lock and THE LIGHT SENSOR WAS THERE! :O - looking like just any ordinary light sensor-
This made me come up to the following conclusions- since i have had another iconia before i returned it for warranty- i was able to identify the following differences-
1st variant-model
Light sensor present
Mic volume low
Volume locker button hard to push
Power button sorta pushed inside
2nd variant model -( the one i currently have)
Light sensor absent? Or hidden under black glass? (Manufacturing defect?)
Loose rotation lock (hardware) toggle
Mic volume high (as in proper)
-(i faced these additional problems)-> glass over the camera came off and the glossy label on the side slipped out.
So if u have the first variant, the one i previously had and the one i examined in the shop today- that should give u data from the light sensor, and the 2nd variant with hidden/absent light sensor won`t.
These are my findings. Feel free to point out and discuss-
What should we do? I m considering a second replacement now -_____-

With AndroSensor app open, try to put some direct light above the sensor and see if it shows some readings. I noticed that the sensor is in a sort of sleep status until it sees some light; after then it kinda wakes up and works properly.

I appear to have what you call the second variant model. I just checked with Androsensor, and the light sensor does appear to be present beneath the black glass, just under the volume up rocker. I agree it does appear to sleep until it senses a light source.

cm0901 said:
With AndroSensor app open, try to put some direct light above the sensor and see if it shows some readings. I noticed that the sensor is in a sort of sleep status until it sees some light; after then it kinda wakes up and works properly.
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I just downloaded andro sensor-
Under light sensor it sed-waiting for event-
I took my hd2, turned on the flash! Pointed it right above the sensor and no response, it just kept saying waiting for event- so does this mean i have a defective sensor?
Can this be a kernel/rom related issue?
Pls someone try this and let us all noe.
Thanks

It's a long shot but you might attempt flipping the check mark a few times under the brightness setting and "auto adjust" as that probably toggles the sensor as well, though these apps are supposed to do it. Or close and start the app a few times and then check the sensor. I don't know what activates it but I can confirm that it has some kind of threshold where it sleeps or isn't active and another where it is, so you might want to try various things to, as others have mentioned, wake it up.
Are you using any ROMS by any chance or are you on stock? Have you done any sort of modification of the system - rooted and removed things or replaced kernels, etc?
If you are on a ROM or have done any modifications, you may want to try going back to full stock 3.2 or 3.1 and seeing if that helps before you decide it's actually defective.

Just double checked mine running a 3.2 rooted with thor's kernel. The sensor is working fine. But i did have to uncheck the box for the auto screen brightness to wake it up. Then i used a led maglight on the senor.
Readings from Androsensor:
Light (0.5mA)
55.0 lux
With the maglight cut on it.
65790.0 lux.
Please note with the maglight cut on you can see the light sensor hole then.

KILLER_K said:
Just double checked mine running a 3.2 rooted with thor's kernel. The sensor is working fine. But i did have to uncheck the box for the auto screen brightness to wake it up. Then i used a led maglight on the senor.
Readings from Androsensor:
Light (0.5mA)
55.0 lux
With the maglight cut on it.
65790.0 lux.
Please note with the maglight cut on you can see the light sensor hole then.
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Same as Killer, seems to be working, rooted 3.2, couldnt see until bright light on it.
Anyone have any idea where the mic(s) are, not really important just wanna know which end to scream into when doing voice search

Mic is located directly in the top center of the front face, in the space between the glass and the bezel. You should be able to see it with just a small amount of light shining on it.

FINALLY!
after various non stop auto brightness toggle on and offs - waiting for event went and 1 lux came xD - i shone light the reading increased - and stopped working agen :|
I dunnu maybe the apps are not fully compatible.
I can say it is working because i changed my brightness to full manually and then turned auto on and the brightness level set itself automatically.
So will we have to wake up the sensor from a state of sleep all the time or is it just for the apps xP - last confusion.
Thanks every1 for ur responses, the mystery is finally coming to an end xD!

[Q] Proximity sensor on all the time

Hello everyone ... Can someone help me please... I have my s5 for a few days ... And now I saw that my proximity sensor Is always on, I can see the red light even if my phone is locked... And I'm worried that is using my battery I got 5 or 6 h display max with 1 day of usage

Proximity sensor doesn't utilize a red light. Maybe you have a malfunctioning notification light?
Notification light is on the left. Proximity and light sensors are on the right.

mediumsteak said:
Proximity sensor doesn't utilize a red light. Maybe you have a malfunctioning notification light?
Notification light is on the left. Proximity and light sensors are on the right.
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It is on the right side... I barrely see it... But it s there and I know when is not on..... And trust me I'm not a NOOB
U can see it just in very low light.... At night )

Yup! Have noticed that with other phones too. It will be a very faint glow that you can see in the dark. I've seen it on at times too but it hasn't affected function so I never gave it a second thought

terrorblade23 said:
And now I saw that my proximity sensor Is always on, I can see the red light even if my phone is locked... And I'm worried that is using my battery I got 5 or 6 h display max with 1 day of usage
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This is not a concern. The proximity sensor is an infra red sensor and emits a faint amount of visible red light. All of the S5's do that, it's normal and it is no barrier to great battery life.
If you did a forum search you would find existing threads where this has been asked and answered before. The glow probably represents the average bias current as the sensor periodically polls it's environment every x ms. In any event it's normal and expected behaviour.
.

fffft said:
This is not a concern. The proximity sensor is an infra red sensor and emits a faint amount of visible red light. All of the S5's do that, it's normal and it is no barrier to great battery life.
If you did a forum search you would find existing threads where this has been asked and answered before. The glow probably represents the average bias current as the sensor periodically polls it's environment every x ms. In any event it's normal and expected behaviour.
.
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Thank you man... I was just worried because after I restart, it doesn't remain on and it s ok for some time (I think) ... And I can't see that infrared light... But after some time it stay on always )

After a fresh reboot, there may not be any apps using the proximity sensor. But a lot of apps do make use of it, so as soon as you use an app that does, the sensor will start monitoring and there will be that glow.
I don't think that the sensor uses much battery in most apps as mine is usually on. Even my screensaver makes use of the sensor and I still get great battery life.
.

fffft said:
After a fresh reboot, there may not be any apps using the proximity sensor. But a lot of apps do make use of it, so as soon as you use an app that does, the sensor will start monitoring and there will be that glow.
I don't think that the sensor uses much battery in most apps as mine is usually on. Even my screensaver makes use of the sensor and I still get great battery life.
.
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please can you tell me name of these apps who are using proximity sensor becoz in my case i haven't installed any app that will use it

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amolmk said:
please can you tell me name of these apps who are using proximity sensor becoz in my case i haven't installed any app that will use it
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finally i solved it.... it was Smart remote software and that software using air gesture.... i disabled "use air gestures" option from setting in smart remote app and problem solved :good:
i hope this information helpful for everyone....