We all know that the nexus one has in the top left hand corner 2 types of sensors:
1. Proximity Sensor
2. Light Sensor
I dont know which one is which but in this demo of the day 2 conference one of them lights up during the demonstration of a call. Can someone explain why that is?
Take a look at timestamp 23:02 in http://www.youtube.com/watch?v=IY3U2GXhz44
That could very well be an infrared light flashing and being picked up on the camera.
Is that how the proximity sensor works? Sends out flashes and looks for a reflection?
Could possibly do that when a call initiates and whenever motion is detected to check the proximity.
Try it yourself. Start a call while looking at your phone through a webcam. I just did and can see it flashing while the call is active. It doesn't flash the same way as on the phone in the demo, but more of a steady flashing on mine. Could be that it is more efficient in FroYo or the version they were running.
Nice find, I overlooked it when I watched it earlier.
Link with time jump: http://www.youtube.com/watch?v=IY3U2GXhz44#t=23m01s
Not sure which sensor it is but
1) infra red light does show up when you look at it through a lense with filter/coating/film. Try looking at your tv remote with your digital camera.
2) the blinking could be the video framerate
I think it's most likely the proximity sensor. The light sensor should just take in data and never give out any type of signal. Also I did over look the way a proximity sensor works. It does send out some type of signal and it needs to collect information such as reflection index and velocity to get an accurate measurement of distance
Didn't notice it lol.
Like britoso said:
It looks like infrared sensor. probally the proximity sensor.
Related
Hey guys, I'm fairly new here, but there's something that keeps bothering me.
On the left side of the LG there's this 3(?) LED lights or something..
Does anyone have a clue on how they work, or if they even work?
Well, they are not LEDs, they are sensors. Two of them are obvious, one is proximity sensor and the other one would be light sensor. Don't have a clue about the third though...
I'm secretly hoping the third to be a notification LED of some sort
Thanks though
.:george:. said:
Well, they are not LEDs, they are sensors. Two of them are obvious, one is proximity sensor and the other one would be light sensor. Don't have a clue about the third though...
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- Accelerometer sensor
- Proximity sensor
- Gyro sensor
eh, what?
tenchars
@xmoo
That makes no sense. The gyro and accelerometer have no need for visual input, hence highly(!) unlikely that they are what you say they are.
i suspect the first 2 from the left are both proximity sensors, it could be to increase reliability.
the 3rd is the light sensor.
The proximity sensor is based on an IR diode and an IR receiver, just "film" your O2X with a camera and you should see the IR LED flashing.
Thank you guys
Still think they should've put a LED in it though.
Alright boys and girls
An idea.
We know that there is no Infra-red output on the Note 8, (unlike S6, s7 etc) rendering remote control apps useless.
However, there is an infra-red diode on the front of the note 8 for the iris scanner.
In our house we have infra-red controlled dimmer switches for our lights. Upon messing around having far too much time on my hands, I have managed to get our dimmer switches to respond to the Note 8`s iris scanner LED. Meaning when I have my case open, the lights dim and go up again.
What are the chances of being able to manipulate this LED for a remote app. It seems pretty powerful, dimming our lights from across the room. Can make a vid if anyone wants to see - pretty basic stuff.
Could the LED on the front of the Note 8 be switched (pulsed) fast enough do you think? ie 34khz / 38 khz to enable use as as an IR remote control?
There is obviously an API for accessing the IR diode.
Any thoughts?
Pretty sure it's locked up for security reason.
Samsung obviously say it isnt posible:
http://www.samsung.com/ph/support/skp/faq/1126303
Pd:I also miss the ir emitter from my note 4. It was very usefull for my arduino control proyects
Yes I have seen that. I think Samsung are assuming that it isnt possible as they only provide the API for off and on maybe?
It would involve manipulating the LED at a high rate
After all, all a remote control is, is the light turned on and off really fast (ie 34000 per second / 34 khz) in a set pattern to align with the requirements of the receiver / tuner.
Would need to be rooted obviously with kernel level access.
I may investigate further. Samsung say it isnt possible. That means it must be!
Just read in another post that this isnt possible because the hardware. Ir control remote leds wavelength is tipically 940-950 nm, and IR led for iris scanner is emitting in 810nm. That is why we can see clearly a red dot in the led, I didnt see anything in my note 4 with my eyes (only seen it throught any IR sensible camera). Anyway I will build a simple ir reciver with a PIC when I finish my finals next month in order to check if a IR reciver can get some information with the IR emitter. Hope is the last that we lose hehe
anon_durden said:
Just read in another post that this isnt possible because the hardware. Ir control remote leds wavelength is tipically 940-950 nm, and IR led for iris scanner is emitting in 810nm. That is why we can see clearly a red dot in the led, I didnt see anything in my note 4 with my eyes (only seen it throught any IR sensible camera). Anyway I will build a simple ir reciver with a PIC when I finish my finals next month in order to check if a IR reciver can get some information with the IR emitter. Hope is the last that we lose hehe
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Click to collapse
Forget the red dot.
There is actual IR that is completely invisible. Take a photo of your Note 8 from another handset. There is clearly IR in the 900nM range. Use another phone camera, it transverts the IR into visible light.
I do not mean the visible red light you can see when using iris unlock. I do not even have iris unlock / face unlock enabled and it is there.
IR blaster - dimmer switch
N10AP said:
Alright boys and girls
An idea.
We know that there is no Infra-red output on the Note 8, (unlike S6, s7 etc) rendering remote control apps useless.
However, there is an infra-red diode on the front of the note 8 for the iris scanner.
In our house we have infra-red controlled dimmer switches for our lights. Upon messing around having far too much time on my hands, I have managed to get our dimmer switches to respond to the Note 8`s iris scanner LED. Meaning when I have my case open, the lights dim and go up again.
What are the chances of being able to manipulate this LED for a remote app. It seems pretty powerful, dimming our lights from across the room. Can make a vid if anyone wants to see - pretty basic stuff.
Could the LED on the front of the Note 8 be switched (pulsed) fast enough do you think? ie 34khz / 38 khz to enable use as as an IR remote control?
There is obviously an API for accessing the IR diode.
Any thoughts?
Click to expand...
Click to collapse
Hi,
I would like to ask if it has managed to solve somehow. ?
I'm currently tackling the same problem.
Note 8 turns off the remote control of the lights without wanting.
It can not turn off
N10AP said:
Forget the red dot.
There is actual IR that is completely invisible. Take a photo of your Note 8 from another handset. There is clearly IR in the 900nM range. Use another phone camera, it transverts the IR into visible light.
I do not mean the visible red light you can see when using iris unlock. I do not even have iris unlock / face unlock enabled and it is there.
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Click to collapse
That invisible ir you are speaking of is part of the proximity sensor.
Just throwing a suggestion, the heartbeat sensor also uses infra red, so we might be able to use that too
This looks really promissing, we have iris LED and heartrate sensor LED, both infrared, this is xda FFS we can do it!
well guys, proximity sensor has an IR LED as well, and almost every phone has a proximity sensor. but still, there's no way to turn all of them into IR remotes till now...
Recently bought galaxy m31 and found out that i have to press my phone real hard on my ear to screen to go off during call. I never faced such issue with previous devices. So i searched on google and found *#0*# to check sensor working or not. Sensor is working correctly but there is no fixed place of sensor, seems like whole upper part of touch screen is used as sensor and there is no actual optical proximity sensor inside this phone. It's also clearly written Virtual Proximity sensing. Anyone facing same issue on this device or any other phone which uses this technology and any fix for this?
I have also the same problem. Thanks, at least you dig deeper "virtual proximity sensor".
gouravchugh09 said:
Recently bought galaxy m31 and found out that i have to press my phone real hard on my ear to screen to go off during call. I never faced such issue with previous devices. So i searched on google and found *#0*# to check sensor working or not. Sensor is working correctly but there is no fixed place of sensor, seems like whole upper part of touch screen is used as sensor and there is no actual optical proximity sensor inside this phone. It's also clearly written Virtual Proximity sensing. Anyone facing same issue on this device or any other phone which uses this technology and any fix for this?
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Click to collapse
It doesn't have any separate proximity sensor, rathor the front camera works as a proximity sensor. Try covering the front camera properly.
Hello,
does anyone know how the virtual proximity sensor works?
AIDA64 and other apps say it is a "Ear Hover Proximity Sensor (ProToS)"
The same sensor should be in the Galaxy A51 as I found here
http://stools.gleamolabs.com/sensors/devices/1698
I know that it has no more real infrared proximity sensor.
Just accidentally stumbled over this post. Can you tell me how this ear hover proximity sensor performs? From the name I'd guess it only detects proximity if an ear is actually covering the sensor, and pocketing the device or waving your hand over the sensor will not trigger it, correct?
https://www.reddit.com/r/GalaxyS20FE/comments/jel1bw
https://www.reddit.com/r/GalaxyS20FE/comments/kt76c4
when I first heard about this phone it sounded like a fantastic device, that impression keeps getting eroded.
Dear all,
I had problems with my Note 10 virtual proximity sensor over the last months and it went worse from day to day.
Reading details in how the sensor works, I tried to figure out what might cause it not working properly.
The sensor seems to use the top ear phone speaker to broadcast ultrasonic sound and detecting whether it reflects.
So this lead me to the assumption, that a dirty speaker might cause trouble.
Now that speaker is so small that cleaning it is difficult.
This is what I tried:
I took a very small needle and rubbed it from left to right and back and forth on that speaker. I tried to get off as much dirt and dust as possible from it very small holes.
Difficult approach, but you might try that a well. A needle, some cleaning liquid, something to blue away that dust.
After I tried I first noticeably that the ear phone speaker was much louder again and testing with a WhatsApp voice message and with the CIA test menu, the sensor reacted much much better.
I'll give it some more days of testing but wanted to share those thoughts with you!
Let me know if you also have success
Best regards,
Christian
is there any fixed or module?
Promoting my app that blocks screen during phone calls.
It will help to minimize effects from non-reliable ultrasonic proximity sensor.
So even if screen suddenly turns on you'll not press something by ear or cheek.
Bonoboo said:
Promoting my app that blocks screen during phone calls.
It will help to minimize effects from non-reliable ultrasonic proximity sensor.
So even if screen suddenly turns on you'll not press something by ear or cheek.
Click to expand...
Click to collapse
hi i download the app in playstore but not helped why? have android 12