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13

I beleive you are asking "can the power usage of an eink screen be quantified?" As long as you don't change the page/image it is not using anypower. E Ink's technology is commonly referred to as "bistable". What does this mean? Bistable means that the image on an E Ink screen will be retained even when all power sources are removed. In practice, this ...


12

Take a look at the earl, it is an android device with a 6” Flexible, sunlight viewable, E-ink screen (1024x758) with front light. It also comes with a solar panel, so you might want to put it on the outside of your pack (as long as you don't go hiking in the UK). It has not been released yet, but it should be available this summer (I certainly hope I have ...


12

Older Kindles On older generation Kindles (with keyboard) it is actually possible out of the box. You just have to store them in a very specific way. Create a folder named pictures in your Kindle's root directory. Create folders with arbitrary names for the collections you want to create. Copy the images into those collections. Press Alt+Z to start the ...


11

I guess it is because having colors reduces resolution. The Triton eink that is used in the JetBook referred to is basically a black and white eink display with a color filter on top. So for each 2x2 square of pixels there is one pixel each tinted red, green and blue and one staying in black and white. So effectively you have a resolution of 800x600 with ...


9

The biggest issue is likely to be background network use. For example, Amazon's Kindles will continue to use Whispernet and/or WiFi in the background. Assuming you have turned those features off, you would want to power it off entirely only if: You plan to store it for a long period, on the order of months. You plan to open up the physical case for some ...


8

E-ink have had their Triton technology for a few years, which has been available in several commercial products: Hanvon color eReader, JetBook Color and PocketBook Color Lux. I cannot find the reference, but IIRC there are multiple layers through which the light needs to reflect. Therefore the lighting conditions need to be better than for monochrome eInk ...


8

It depends on specific device and its architecture. Those that are built on top of Android, typically tend to get AOSP ports, e.g. Nook (here's Simple Touch instructions), or Kindles - the latter even has CyanogenMod ROM. Sony PRST 1 was hacked to expose full underlying rooted Android but I'm not sure if AOSP based ROM is available for it - this might be ...


7

No they don't. Otherwise Kindle screen pictures/ and similar picture on other e-ink devices would have been discouraged and the screen would had been blank on shutdown.


7

e-Ink is, generally, a synonym of electronic paper. The form used in most e-readers is E Ink (proprietary and trademarked), produced by the E Ink Corporation. The technology basically uses microcapsules filled with white and black charged particles. The charged particles are manipulated by electrodes at the top and bottom of the capsule. When the top ...


6

Eink devices usually don't have screens with a smooth surface, they have a slight roughness, in order to simulate the look and feel of printed paper and to prevent unwanted light reflections on the surface during reading. Applying a protective film over it will remove this feature; I don't know if such films with a non-smooth surface are in existance, but ...


5

The Kindle eInk devices do not run the Android OS, they run Linux. I believe most of the other eInk devices run Linux as well. That being said, your question is difficult to answer because the energy usage of an eInk screen is so much lower and the way energy is used is very different. The easiest answer to your question is that 1% is as accurate an ...


5

I have found some of my Kindles have ghosting on the screens. I've bought at least 30 e-ink kindles, many previously owned by other owners. The ghosting tends to vanish as I use the devices, so it may be related to other causes e.g. where the device doesn't refresh every pixel. See http://www.dummies.com/how-to/content/common-problems-and-solutions-for-...


5

E-ink displays have to be mounted on a surface. In this case I assume that was done on the glass. This keeps the E-ink nice and flat (good for equal visibility of all pixels) and for extra reflectiveness of ambient light, if the glass is part of a mirror (as it seems to be). The display is actually a thin film transistor array and my guess is that if the ...


4

The Triton display is an E Ink display so it should greatly reduced power consumption when compared to a conventional LCD display. According to the E Ink website the Triton display has a similar crispness as an monochrome E Ink display. The price for the Ectaco Jetbook Color using this display is $499.95. However the price of future color E Ink displays ...


4

Sony seems to be developing an device based on the flexible e-ink Mobius display. I don't know when it will come out (has come out). The review states: This new eReader was recently announced by Sony and E-Ink. It looks pretty rugged – the new Mobius e-paper display technology is lightweight and shatterproof. The extra large size (13.3"), compared to ...


4

I have 3 eReaders and Sekhemty's answer applies to the one without touchscreen/self-lighting like my Sony PRS-T1. The other two have glass fronts (Bookeen Odysey HD and the venerable Sony PRS-700). Those glass fronts are hard enough not to need any protection in the form of semi-permanent stick on film, assuming you are just using your fingers for ...


4

Technically it isn't a screensaver since the images are static (unless of course the device cycles through images at regular intervals). Either way, e-ink doesn't suffer from burn-in, so it really isn't necessary. What a screensaver (we'll call it that) does do is show that the device is sleeping, so it will not respond to commands (either via touchscreen ...


3

Buy an ereader based on the features and get a case for your lifestyle.


3

A few years ago at the Tools of Change conference in New York, I got to see a demo of a color eInk display. It was really pretty uninspiring--without any backlight, the colors were all really washed out, more like pastels than anything vibrant--and that's being generous. Even Qualcomm's Mirasol display, which is similar to eInk, didn't have really bright, ...


3

The preferred solution (and the one I use) is to create default css outside of the media query breakpoints, and then this css will apply to e-ink devices (which don't support media queries -- even the amzn-mobi one, to my knowledge) You should check the PDF of "Amazon Kindle Publishing Guidelines" on their website. Current version is 2015.4 I think your ...


3

Apparently E-ink does age due to various physical processes. There is lost of contrast (greying), but also freezing of some microcapsules to the black state where they are kept too consistently in that state (typical for some parts of device state display which stays on-screen). I am not a specialist, but you can get more (layman level) details on the web, ...


3

Learning to develop apps for eBook readers is very practical: The reason being, the same technology that applies to creating ebooks; also applies to developing websites, software, etc. Meaning that the skills you learn from developing apps for eBook readers improves your overall skills as a Web or App Developer in general. These skills in turn can allow ...


3

There is a hidden picture viewer in Kindle ( reverse engineered by Igor Skochinsky ): Connect your Kindle to your computer. Create a new pictures folder in the root of the Kindle ( next to documents, music, ... ). Create subfolders e.g. book1, book2. Copy image files onto the subfolders. Disconnect your Kindle. Press ALT-Z in the Home screen. New e-books ...


2

I done this with a Python program that resizes the photos on the fly to the screen resolution and then combine the photos as individual images in a simple EPUB, specifying no borders in the generated HTML and CSS. The program was originally for combining scanned Manga images, but works for photos as well.


2

There is a project, called PRS+, for older Sony PRS devices (PRS-300, PRS-505, PRS-600, PRS-350, PRS-650, PRS-950).


2

For kindle devices, redpepper cases are very rugged and waterproof.


2

In a personal conversation, somebody raised my attention to the following concerns: many ebooks have colourful pictures and diagrams, so a black-and-white e-ink display might not be suitable for all documents and a tablet could come handy one does not want multiple devices but one portable thing, that has a proper web browser I'm still in favor of a large ...


1

Unfortunately the Earl "backcountry survival tablet" crowdfunded project seems to be dead and those who preordered are asking for refunds on their forums. Since you'll probably want a waterproof device while you're out there, the only viable alternative right now seems to be the Kobo Aura H2o waterproof e-reader. A thin tempered glass screen protector (...


1

Indeed. I have a kindle fire (not the best for backpacking because of battery use) but with an m-edge case it's almost bulletproof. For backpacking you'll want to pay more attention to battery life than to construction - a case solves the protection problem.


1

There are eink devices out there running Android and allowing access to the system preferences, namely rooted devices. Those can give you exactly that graph. Here is an image of the graph as of my device: But as others noted due to the technology difference the percent value of the display usage does not make any sense here. It is not very helpful without ...


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