I own a nook color and can read books in complete darkness with the page white and the text black. Can The New Nook Touch also do this ? or do I need a light to read in the dark ??
Thanks
No, you cannot. Nook Touch has an electronic paper display that doesn't emit light, so you need an ambient light to see the display.
Currently all epaper displays are like that.
But you can use a external light for reading in the dark, which is mere 10 USD at local BN or any other site in the internet. For the really fancy, you can go up to 40 bucks for lighting, or wait for a lighted cover, such as in the 1st edition nook.
But no light on its own.
Related
Would I be correct in the assumption that if you have a program in which you can change the program's appearance, would it consume more battery power if the appearance has more "lit" pixels than "dark" or "unlit" pixels?
For example, I use a calendar program called ThumbCal. It comes with numerous skins. For the purpose of this discussion, let's assume that there are only two skins. One skin is basically a white background with black lettering, while the other is a black background with white lettering.
Clearly, the one with a white background is considerably brighter than the one with a black background. Both are equally legible, but the white background is brighter because more pixels are lit to display the white background.
My question is this, will the program use MORE battery power if the white background skin is used? It seems logical because more pixels are lit, or on.
Am I right?
Thanks,
Peter
No. On an LCD screen, like the HD2 has, there is a uniform backlight under the screen, white pixels let that light through, while black ones block it. Even on a full black image, the same amount of light is still generated, only to be blocked and dissipated in the screen just afterwards. So, consumption is independent of the displayed image.
It would be true on an OLED display, where each pixel is indeed an independent light source.
kilrah said:
No. On an LCD screen, like the HD2 has, there is a uniform backlight under the screen, white pixels let that light through, while black ones block it. Even on a full black image, the same amount of light is still generated, only to be blocked and dissipated in the screen just afterwards. So, consumption is independent of the displayed image.
It would be true on an OLED display, where each pixel is indeed an independent light source.
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Great explanation, and completely understood. Thank you.
Peter
So I was playing around with lightflow on my nexus 4 and I noticed that the red LED is kind of prominent when the notification light pulses when I have any color selected with red in it. There's a red glow at the top of the notification light when it pulses, which makes blue half purple, yellow half red-orange, and white pink/purple. The picture is kind of bright, but you can kind of see what I mean (it's supposed to be yellow). It's a lot more visible in real life... Does anyone else have this too?
cheeseypuffles said:
So I was playing around with lightflow on my nexus 4 and I noticed that the red LED is kind of prominent when the notification light pulses when I have any color selected with red in it. There's a red glow at the top of the notification light when it pulses, which makes blue half purple, yellow half red-orange, and white pink/purple. The picture is kind of bright, but you can kind of see what I mean (it's supposed to be yellow). It's a lot more visible in real life... Does anyone else have this too?
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Looks yellow to me brotato.
But yes, I think it's normal to get glimpses of other colors. Happened on gnex and gs3 too.
-Sent from my Nexus 7.-
How do you even configure the LED I couldn't find a way to do this (never had a phone with notification LED before)
In fact I haven't seen the notification LED at all, I can't test SMS messages because my Micro-SIM isn't here yet, but all other kind of notifications had no effect.
Where do I find the LED settings
EDIT: Ok, It seems like there is a notification if I receive a mail (gmail), but not for all notifications. Is this normal?
(If you can tell me how it works I can check if I have a red glow)
Use light flow, download from play.
Sent from my HTC Explorer A310e using xda premium
Slightly topic related question. (apology for slight double post - question sits better here - not worth another thread)
Q1 : When charging I have no lights/led indicators illuminated (on both stock and aokp) - is this the normal? - intended behavior?
I'm used to HTC/Samsung, that tend charge at one colour (amber/red) and then display another colour when full (green). This would seem sensible to me, so that we ensure that we don't over charge the battery and over heat the phone?
Q2 : Another favour to ask: can someone please post a close up picture, of the two Nexus 4 USB cable plugs, as I've managed to confuse several USB leads and don't know which came with the Nexus, which I may need for an RMA return?
Thanks in advance
An RGB LED is basically 3 LEDs crammed into one housing. It's just like a pixel on your monitor, but larger. If you were to zoom in on your monitor you would notice the three individual colors. It just so happens that the red part of the LED doesn't diffuse throughout the housing as well as the other colors do.
karanrajpal14 said:
Use light flow, download from play.
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I see, it's done using an app.
I can see a small red glow at the top (I guess) but it's really small and I wouldn't even have noticed without this thread. (Maybe it's because I am red-green colorblind, but I don't think this has a great effect here)
BTW: Is there a more advanced possibility to control the LED in Cyanogenmod or is it a good idea to pay for light flow (I'm especially interested in support of steam)?
ben_pyett said:
Q1 : When charging I have no lights/led indicators illuminated (on both stock and aokp) - is this the normal? - intended behavior?
I'm used to HTC/Samsung, that tend charge at one colour (amber/red) and then display another colour when full (green). This would seem sensible to me, so that we ensure that we don't over charge the battery and over heat the phone?
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Click to collapse
Yes, by default there is no LED notification of the charge status. You can use Light Flow (including the free version) from the Play Store to add this behavior, as well as controlling notifications for all sorts of events (not just LED notifications -- sounds and vibrations, as well).
You don't need to worry about overcharging the battery, though. There is a protection circuit built in that prevents issues of that sort.
ben_pyett said:
Slightly topic related question. (apology for slight double post - question sits better here - not worth another thread)
Q2 : Another favour to ask: can someone please post a close up picture, of the two Nexus 4 USB cable plugs, as I've managed to confuse several USB leads and don't know which came with the Nexus, which I may need for an RMA return?
Thanks in advance
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Click to collapse
--Here you go--
Hidden92 said:
BTW: Is there a more advanced possibility to control the LED in Cyanogenmod or is it a good idea to pay for light flow (I'm especially interested in support of steam)?
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CM allows you to set colors and flash rate per app, Lite flow allows this too, Lite flow (paid) allows you to add additional apps beyond the standard ones (Gmail, SMS, Facebook, etc).
Brad S said:
--Here you go--
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thanks, but I wasn't able to see any attachment? *confused*?
EDIT: I can now, XDA/browser issue, seen it now - so resolved and thanks
I'd suggest you try out the lite version of light flow first then decide to buy it or not. It's worth the price AFAIK!
Sent from my HTC Explorer A310e using xda premium
I broke my screen a few days ago and had it taken in to be replaced. A few hours after receiving it I noticed the LED was blinking, but in strange colors different than those I set in Light Flow. The normally white notification is now cyan, yellow is now green, purple is blue. Red however doesn't display at all, so it seems that the red portion of the RGB scale is not functioning. Does anybody know what during the screen repair process might be causing this to happen? I'm almost certain its not software related as prior to having it repaired the LED was working correctly. Thanks!
There's a kind of filter for the LED on the display, not all replacement parts come with it and it's pretty easy to overlook.
DrFredPhD said:
There's a kind of filter for the LED on the display, not all replacement parts come with it and it's pretty easy to overlook.
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There does seem to be a blue hue around the notification light area when held in the light... So could it be that this filter was mistakenly left on the old screen, instead of transferred to the new part? Or is it something attached to the screen that can't be moved from one part to the other?
It wound up being a damaged LED light
I recently dropped something on my Nook Simple Touch with Glowlight and created a "hole" in the light guide layer :crying:. I have found a way to minimize this distraction and thought I would share it here. I have my Nook rooted and have AIReader installed. I noticed that if I use white text on a black background the "hole" in the light guide is much less distracting. It seems the bright spot from the "hole" appears much smaller when the light does not reflect off of a white background. With the Glowlight off the defect it not noticeable, so reading in normal light is fine and when I have the Glowlight on switching to the black background doesn't seem so strange because the room is dark anyway.
I suspect others have this all too common problem, so I hope this information helps someone.
Do you want to look into trying any of these products? I found them a while ago and I was thinking perhaps the uniformity tape could reduce the glare properly and finally be a fix to the glowlight issue. I looked into other light guiding films to replace the entire screen "protector" but it looks like it has to be specifically designed to distribute the light evenly.
I noticed when photographing clothes to sell on FB that black shirts and hoodies look navy blue and orange looks reddish orange and light grey looks bluish. the outside blue sky was shining in the window and the overhead light is warmer. if i hold the camera facing the window it's fine. but as soon as i point it anywhere else then the color balance goes to hell. i tried the stock and Gcam. Also noticed in the living room the green and orange blanket looked like a funny shade of orange instead of green and a yellowish orange on the orange. It seems impossible to get the colors right indoors with some things. anyone else notice this?
Do you have it in manual mode or auto ?
This is quite common. Digital cameras can either automatically or manually decide what is white. It can be hard to get this right in all situations - usually there are some assumptions made in auto mode, but "white" obviously varies based on lighting.
In manual mode, you can additionally turn on RAW saving (it will save jpegs too in this mode). The white balance can easily be adjusted after-the-fact on the raw images (but then you need to use something to convert them from raw to jpeg).
If you want accurate color rendition and you need to use your phone for the pictures, use manual mode. Put a white sheet of paper in the lighting conditions you are photographing in and adjust the color temperature until it looks white. Take a test shot and look at it on another device since everyone's display can vary. Once you get that right, see if your colored objects look right as well (and then maintain the same lighting for everything!).
Oh, and this actually is a problem with film too - only the color balance is a permanent part of the film There used to be tungsten and daylight films or you could use a filter to compensate.
Although automatic white balance works reasonably well most of the time, certain scenarios can confuse the algorithm. The mixed lighting scene you describe is one of them. The camera detects your indoor lighting but most of the ambient light is cool , from the outside. Use manual mode in these situations, and adjust the white balance yourself. If you're going to be taking a lot of photos in the same sitting with the same lighting, it is probably worthwhile to use a neutral or white card to set it. If its just a one time casual photo, just adjust the WB by eye until the look of the preview looks right.
railfan-eric said:
I noticed when photographing clothes to sell on FB that black shirts and hoodies look navy blue and orange looks reddish orange and light grey looks bluish. the outside blue sky was shining in the window and the overhead light is warmer. if i hold the camera facing the window it's fine. but as soon as i point it anywhere else then the color balance goes to hell. i tried the stock and Gcam. Also noticed in the living room the green and orange blanket looked like a funny shade of orange instead of green and a yellowish orange on the orange. It seems impossible to get the colors right indoors with some things. anyone else notice this?
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jshames said:
Although automatic white balance works reasonably well most of the time, certain scenarios can confuse the algorithm. The mixed lighting scene you describe is one of them. The camera detects your indoor lighting but most of the ambient light is cool , from the outside. Use manual mode in these situations, and adjust the white balance yourself. If you're going to be taking a lot of photos in the same sitting with the same lighting, it is probably worthwhile to use a neutral or white card to set it. If its just a one time casual photo, just adjust the WB by eye until the look of the preview looks right.
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Thanks, the mixed lighting and all what you said is what i figured. I didn't take the time to use manual. i just wanted to get the pictures done and posted to the FB groups before i got lazy and put it off.