Database Develop

Black Light

Hi.
I am wondering if it is possible to use the screen of the tytn II to create a black light flashlight setting/theme or something simillar.

um... what exactly do you mean by black light?

I seriously doubt the Tilt emits much UV. "Black light" is just a name because UV doesn't give off a lot of visible light until it shines on something fluorescent (whites, bright greens and oranges, protein-based stuff, etc).
If you want a UV light for some reason, you can get cheap "fishing" lights at Wal Mart which are UV, the ones I've seen are intended to clip onto a hat and have 3 (or 5, forget) UV led's in 'em. If you want to get a serious UV light, you'll have to look around more. Terralux sells a Mag 2AA drop-in which is a rather decent UV light. There are others which have a watt or more of UV output, which is quite a lot and is quite dangerous if you're not careful.
I suspect this is way more than you were asking.

[Q] Image burn on a captivate?

Has anyone experienced LCD image burn-in on their captivate? I just noticed yesterday that when I have a web page up I can look on the left side and see Pandora Radio's controls.

well modern lcd's dont expereince burn in and the captivate doesn't have an lcd it has an oled tft not lcd tft. specifically it is "super" amoled. yes amoled screens are suseptible to burn in but not as much as standard oled. however it is very apparent on att display models in the stores. that said i run mostly dark themes and dont have any burn in that i can see, my phone is coming up on a year old.

Edit: Beaten to the LED thing.
Just to clarify, the Captivate screen uses LEDs, not LCD technology. That said, LEDs are much more susceptible to burn-in, and my screen has it. It's most noticeable around the notification bar clock at the upper right, since it's almost always displayed. It's most apparent on solid or almost solid screens.
It doesn't really bother me, I guess.
Perception 10.2 | Onix 2.0.4 | I9000UGKC1

well leds aren't suseptable to much loss of brightness but oled technology doesnt use the same type of semiconductors. it is organic light emitting diodes. the organic material deteriorates over time.
in oled there is no lcd or backlight. the organic led's are the pixels
dont associate oled too much with leds because with lcd's led backlights are far superiors to florescent backlights. not only in color balance and temperature and power consumption but also in longevity.

Thank you guys for your replys, it doesn't bother me too much. I was just checking, I leave Pandora up all the time while I am at work and now that I have this information from you all, I know to not do that so much.

PeteSeiler2010 said:
Thank you guys for your replys, it doesn't bother me too much. I was just checking, I leave Pandora up all the time while I am at work and now that I have this information from you all, I know to not do that so much.
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just turn the screen off if pandora is running.

Took a picture of our cooking hob

Took this picture of our cooking hob and noticed something weird but cool. The ring in real life is red, but in photo is bluey-purple.
Sent from my Nexus 4 using xda app-developers app

stefandunn said:
Took this picture of our cooking hob and noticed something weird but cool. The ring in real life is red, but in photo is bluey-purple.
Sent from my Nexus 4 using xda app-developers app
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Does your hob get hot? If so the camera is most probably imaging the infra red radiation from the heat. Point the camera at a remote control LED while pressing a button and look at your phone's screen.

Yeah I got a light with my camera from my optical gaming mouse, but it isn't visible to the eye! Very cool (sort of)
Sent from my Nexus 4 using Tapatalk 2

What you're seeing is near-Infra-Red (nIR) radiation. CCD and CMOS image sensors are sensitive to a much wider range of EM wavelengths than the visible spectrum. Due to the size and cost of compact sensors, filters to remove these unwanted wavelengths are not perfect. The Bayer Pattern (RGBG) colour filters on the sensor itself have different band passes; ranges of wavelengths in which they will allow light to pass. The red filter will allow a small amount of nIR to pass, as red is the closest in wavelength to nIR. The green filter blocks IR fairly effectively. The blue filter's transmission spectrum blocks red and green effectively, but is fairly transparent to nIR.
That is why nIR appears purple on CCD and CMOS camera.

[Q] Planning to grab the Nexus 6, few questions before

Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?

Svid said:
Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?
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Click to collapse
Both are true.. But I don't have any issues on my device..

Danish2980 said:
Both are true.. But I don't have any issues on my device..
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I saw some videos on youtube and they said inverting colors from time to time for a certin amount of time helps. This is true?

Svid said:
I saw some videos on youtube and they said inverting colors from time to time for a certin amount of time helps. This is true?
Click to expand...
Click to collapse
Also true..

Svid said:
Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?
Click to expand...
Click to collapse
The at&t variant I personally own never gave me these issues. I have read the pink tint issues were associated with the adaptive /automatic brightness enabled?! Yet, on mine I saw no pink with it enabled or disabled.
And there are videos on YT showing burn in. It is basically the soft keys at the bottom. Triangle, circle, and the square are the culprits. But again no issues for me.
Now the very 1st day my phone did a random reboot on me - twice! But, as soon as I unlocked bootloader, rooted it, and used a custom recovery the reboots never surfaced again! Go figure?! And the nexus 6 is definately the fastest performing phone I owned yet

Svid said:
Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?
Click to expand...
Click to collapse
AMOLED's can all have that issue, but I personally have never seen it happen (I have had a gnex for almost 2 years which used AMOLED and doesn't have burn-in). The pink "issue" isn't really an issue, google allowed the screen brightness to go extremely dark on the N6. This causes the screen to take on a pink tint simply due to the way amoled's function at that low a brightness. The screen does have a warmer hue to it as well because it is AMOLED, but you can use a custom kernel to tweak RGB values and give the screen a cooler tint. Hope that helps

gambit07 said:
AMOLED's can all have that issue, but I personally have never seen it happen (I have had a gnex for almost 2 years which used AMOLED and doesn't have burn-in). The pink "issue" isn't really an issue, google allowed the screen brightness to go extremely dark on the N6. This causes the screen to take on a pink tint simply due to the way amoled's function at that low a brightness. The screen does have a warmer hue to it as well because it is AMOLED, but you can use a custom kernel to tweak RGB values and give the screen a cooler tint. Hope that helps
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Thank you for that useful information mate.
So, all AMOLED's, regardless if it's the N6 or not, suffer from this issue?

Svid said:
Thank you for that useful information mate.
So, all AMOLED's, regardless if it's the N6 or not, suffer from this issue?
Click to expand...
Click to collapse
That is correct, all AMOLED's are susceptible to this because of the O in AMOLED, which stands for Organic. The organic compounds that are used in these screens are susceptible to burn in due to the fact that the organic compounds degrade with a lot of use. Of the RGB subpixels, Blue subpixels degrade quickest. However, the N6 uses a Pentile pixel arrangement. This has upsides and downsides, but it is actually an upside as far as this issue is concerned, because the Pentile layout contains less blue subpixels, so there is less susceptibility to burn in.
If you want to combat this issue further, you can use blacked out google apps, and use ROM's with blacked out system options, use a mostly black wallpaper, etc. This is because on an AMOLED screen when the screen is black, the pixels are not displaying any light and thus are not degrading at all. This should reduce your chances of running into the issue. It will also save battery life since the screen is not using as much energy. That is one of the upsides to AMOLED screens, along with the very dark blacks you get in movies and games for the same reason (pixels are not lighting at all). Like I said, I've used other AMOLED screens and not run into this problem as of yet, to my understanding it should take years before you start to see burn in even with normal use. Some people say they have issues right away but that has not been my experience.

All screens of any technology are correctly color calibrated at a given brightness and are very far off at extremes. With an LCD, it will generally be too blue at high brightness and not blue enough at low brightness. That is because the backlights are never a 6500K source. They are basically always bluer than standard.
The Note 4, to pick an AMOLED example, does not get red at very low brightness, but that is because it (according to others) has a higher minimum brightness. My screen takes on a red tint when in a dark room with adaptive brightness enabled if I have the brightness slider set below about 30%. I consider this a handy feature since I don't like the feeling of staring into a light bulb.
Above about 30%, or in a room with a light on, the screen stays normal for me.

I have not seen thecpink issue on my N6 at all.

gambit07 said:
That is correct, all AMOLED's are susceptible to this because of the O in AMOLED, which stands for Organic. The organic compounds that are used in these screens are susceptible to burn in due to the fact that the organic compounds degrade with a lot of use. Of the RGB subpixels, Blue subpixels degrade quickest. However, the N6 uses a Pentile pixel arrangement. This has upsides and downsides, but it is actually an upside as far as this issue is concerned, because the Pentile layout contains less blue subpixels, so there is less susceptibility to burn in.
If you want to combat this issue further, you can use blacked out google apps, and use ROM's with blacked out system options, use a mostly black wallpaper, etc. This is because on an AMOLED screen when the screen is black, the pixels are not displaying any light and thus are not degrading at all. This should reduce your chances of running into the issue. It will also save battery life since the screen is not using as much energy. That is one of the upsides to AMOLED screens, along with the very dark blacks you get in movies and games for the same reason (pixels are not lighting at all). Like I said, I've used other AMOLED screens and not run into this problem as of yet, to my understanding it should take years before you start to see burn in even with normal use. Some people say they have issues right away but that has not been my experience.
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Click to collapse
Not sure about the bottom paragraph, surely you mean inverted colours? Also If you use a mostly black wallpaper you're more likely go get burn in because the pixels around navigation buttons aren't on at all and are thus not degrading whilst the navigation buttons are fully on and are degrading.
Sent from my Nexus 6 using XDA Free mobile app

letom said:
Not sure about the bottom paragraph, surely you mean inverted colours? Also If you use a mostly black wallpaper you're more likely go get burn in because the pixels around navigation buttons aren't on at all and are thus not degrading whilst the navigation buttons are fully on and are degrading.
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
Inverted, blacked out, I don't think there's a difference. The button icons themselves will eventually burn in because they are almost always on unless you opt for pie like controls, but like I said that should be over a span of years. A black background will keep everything else from wearing faster though and should give you better battery performance.

I have had the phone for a week now and have not seen either of these issues. I do keep my screen fairly dim, like minimum brightness PLUS a screen dimmer for the nights and early mornings. I do not see any pink what so ever with adaptive brightness off and the minimum setting for brightness. I only turn the screen up when outdoors. I don't know I just find the screen really bright while indoors and I would assume burn in would be more susceptible with higher brightness

So i can safely buy the device right?
Anyway i have to order the phone overseas (No 64GB avalible in my country and the price tag too high anyway).

LED gets super HOT!

I use my LED on my Nokia 8 as a torch to not wake my son up when I go to bed, he stirred one night so I covered my phone's LED with my hand & it burnt me, it got super HOT! Anyone else? No other phone has done this to me, I know LED's can get hot but wow! Cover yours up with your finger for 10-15 seconds!

ryanraven said:
I use my LED on my Nokia 8 as a torch to not wake my son up when I go to bed, he stirred one night so I covered my phone's LED with my hand & it burnt me, it got super HOT! Anyone else? No other phone has done this to me, I know LED's can get hot but wow! Cover yours up with your finger for 10-15 seconds!
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Click to collapse
Yeah mine gets hot too
Sent from my TA-1012 using XDA Labs

It is overdriven to make it so bright, normal with LEDs that are pushed so hard, i'd stop using it as a torch though, it is liable to burn it out eventually.

MrBelter said:
It is overdriven to make it so bright, normal with LEDs that are pushed so hard, i'd stop using it as a torch though, it is liable to burn it out eventually.
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Surely it shouldn't get that hot ? My G5SPlus stays cool when I use it as a torch this is too hot to touch!

Sometimes my LED is very hot too

ryanraven said:
Surely it shouldn't get that hot ? My G5SPlus stays cool when I use it as a torch this is too hot to touch!
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Click to collapse
It might not be driven as hard or it might have better cooling or it might be a different type of LED.
LED bulbs for your house have heat sinks in them, they get hot.

It's normal. Look at the warm colour that our LED has. It has to do with the type of technology that's used to cast such a bright colour and it's quite normal that it's getting hot when there's nowhere to disperse the heat.

It , itself is not HOT , but it is very bright , your hand absorbs the light as a (black object) and turn the light's energy into heat.

Ahedfares said:
It , itself is not HOT , but it is very bright , your hand absorbs the light as a (black object) and turn the light's energy into heat.
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wtf are you and the rest going on about, led power consumption is about 85% heat, as in, 1w led bulb produces about 0.15w worth of visible light and the rest is dissipated as heat. there is nothing complicated about this.

grimyhr said:
wtf are you and the rest going on about, led power consumption is about 85% heat, as in, 1w led bulb produces about 0.15w worth of visible light and the rest is dissipated as heat. there is nothing complicated about this.
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LOL , the is an LED , not a tungusten bulb , it hase higher than 96% efficiency.
Get your information checked.

Ahedfares said:
LOL , the is an LED , not a tungusten bulb , it hase higher than 96% efficiency.
Get your information checked.
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lol, at least do a quick google search before being stupid on the internet, tard...
just in case you are too ****ing lazy here you go, take a quick read, just a first result on google explains more or less what i was saying... https://www.ledsmagazine.com/articles/2005/05/fact-or-fiction-leds-don-t-produce-heat.html
100w led bulb produces more than 5 times the heat incandescent bulb does. so WAY more.
or if this is easier for you, 14W led bulb produces about as much heat as a 100W incandescent bulb