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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Wait for HD3 to solve the problem just for you
Related
does hd has proximity sensor as my screen turns of even that my phone is far from my face
hoss_n2 said:
does hd has proximity sensor as my screen turns of even that my phone is far from my face
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I dont think so it has a light sensor though, if you dont want it to turn off as many people dont you can download HD Tweak which will allow you to turn of the feature
Hope that helps
ozmoran said:
I dont think so it has a light sensor though, if you dont want it to turn off as many people dont you can download HD Tweak which will allow you to turn of the feature
Hope that helps
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but in gsm arena it is said that it has proximity sensor
mmm interesting someone who knows more about the HD will answer this
sorry i couldnt help more
Correct me if I'm wrong but the CMOS camera on the front is used as a light sensor.
Slothie said:
Correct me if I'm wrong but the CMOS camera on the front is used as a light sensor.
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You're wrong
The HD has a true light sensor (next to the earpiece, the little 2mm transparent plastic), but has not proximity sensor.
lpaso said:
You're wrong
The HD has a true light sensor (next to the earpiece, the little 2mm transparent plastic), but has not proximity sensor.
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but why the screen turns off when closing the device to your face
hoss_n2 said:
but why the screen turns off when closing the device to your face
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The HD uses the light sensor when you call.
I don't use the stock rom anymore, but I think it's functioning like that :
* You're in a light environment :
- you dial / receive a call, but keep the phone on the desk : the screen is on for about 10s then shutdown.
- you dial / receive a call and immediatly put it near your ear : the light sensor detects the difference of light, and shuts off the screen.
* You're in a dark environment :
- you dial / receive a call, and keep in on the desk or put it near you ear, it's exactly the same (I don't remember if it's shut immediatly or waits the default "about 10s" timeout).
The main difference between a light sensor and a proximity sensor is that the proximity sensor emits infrared that is reflected by your skin : it "knows" that you have the phone near your face, while the light sensor only know if "it's dark" or "it's light".
Another thing to know is that the light sensor doesn't work when the screen is off : that's why, in an environment with plenty of light, the screen is not powered back if you take away the phone from your face.
lpaso said:
The HD uses the light sensor when you call.
I don't use the stock rom anymore, but I think it's functioning like that :
* You're in a light environment :
- you dial / receive a call, but keep the phone on the desk : the screen is on for about 10s then shutdown.
- you dial / receive a call and immediatly put it near your ear : the light sensor detects the difference of light, and shuts off the screen.
* You're in a dark environment :
- you dial / receive a call, and keep in on the desk or put it near you ear, it's exactly the same (I don't remember if it's shut immediatly or waits the default "about 10s" timeout).
The main difference between a light sensor and a proximity sensor is that the proximity sensor emits infrared that is reflected by your skin : it "knows" that you have the phone near your face, while the light sensor only know if "it's dark" or "it's light".
Another thing to know is that the light sensor doesn't work when the screen is off : that's why, in an environment with plenty of light, the screen is not powered back if you take away the phone from your face.
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from what you are saying we deduce that gsm arena is not an accurate site to get specifications from
hoss_n2 said:
from what you are saying we deduce that gsm arena is not an accurate site to get specifications from
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At least, they're wrong about the "proximity sensor" of the Touch HD
The first HTC with proximity sensor is the Touch Pro2. The TP2 has light sensor AND proximity sensor
you can try touch incall which allows you to change how the phone works during call !!
for example... turn off when held upright to face..
turn screen on when horizontal : )
On front side, wildfire has two LEDs, on either side of phone speaker, on is for msg/call/charging and many, what is second for?
Sent from my HTC Wildfire using XDA App
Hi,
On the Front one Led is the msg/call/charging etc, and the other is a sensor.
While calling someone,if you put the phone to your ear,it will go black as if it is switched on however if you pull it away from your ear it will wake up again. i think it prevents and keys being Unnecessary being touched / pressed..
but i`m not 100% sure
Hope that helps.
True, also light sensor is for automatic brightness.
no, on right of phone speaker there is one sensor as well as LED.
sensor is for all what you guys said, don't know what's second LED for.
I hope you're not talking about the camera flash..
On the left side of the speaker is green/red notification/charge LED. Two holes on the right side of the speaker are NOT LEDs, theese are sensors. The one closer to speaker is proximity sensor (locks the screen and turns it of during a call if it is close to your head) and the second one is light sensor (for automatic brightness) Install sensor list from market to test this
Thanks mate
Sent from my HTC Wildfire using XDA App
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!
There's the two blue-ish ones on the bottom and the one blue-ish one by the camera.....But what exactly are those? And what are the two just to the left of the top speaker? I'm sure one is probably a light sensor or something, but is one a flashing LED that has no purpose yet?
I didn't see it in any of the manuals or reviews online.
@tele_jas the Moto X has 4 Infra Red (IR) sensors. Detect motion so you can wave to make the screen light up.
The two you have circled are the ambient light sensor and the proximity sensor. The 3 small blue dots you see are the IR sensors that wake up the phone when you wave your hand over it, remove it from your pocket, or flip it over. Then to the right of the speaker is the front facing camera and flash.
Omen87 said:
The two you have circled are the ambient light sensor and the proximity sensor. The 3 small blue dots you see are the IR sensors that wake up the phone when you wave your hand over it, remove it from your pocket, or flip it over. Then to the right of the speaker is the front facing camera and flash.
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Geordie Affy said:
@tele_jas the Moto X has 4 Infra Red (IR) sensors. Detect motion so you can wave to make the screen light up.
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Thank you!
Does anyone know what it means when you get feint red glowing LED's at the bottom of the display? There are 2 of them. One on each side near the speaker and microphone grills. Actually if I pass my hand over the phone the notification comes up and they go away for a moment than come back when the notification vanishes so I think they are to do with the sensor.
yeah, they are the infrared sensors, usually it is too hard to really see them light up, but it is possible
dino-zor said:
yeah, they are the infrared sensors, usually it is too hard to really see them light up, but it is possible
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So it does have infra red LED's then. Shame they can't be used as IR blasters.
They are there for Moto's active display technology.