Due to the fact that part of the Flash memory is occupied by the system software, the memory available to the user is less than the total memory of the flash chip. TXT, HTML, RTF, FB2, FB2.zip, DOC, DOCX, PRC, MOBI, CHM, EPUB, JPG, PNG, GIF, BMP, PDF, DjVu, MP3, WAV3 Stereo output, 3,5 mm, Speaker, Microphone DisplayĮ Ink Mobius, 13,3", touch (inductive + capacitive), resolution 1650 × 2200 DOTS, 207 ppi, 16 shades of grey, with the SNOW Field function Built-in Wi-Fi allows you to surf the Internet and connect to network libraries, and Bluetooth 5.0 support allows you to connect various external devices. #INKBOOK LARGE SCREEN ANDROID#The model is based on the Android 10.0 operating system, which allows installing third-party applications and significantly expands the functionality of MAX Lumi. #INKBOOK LARGE SCREEN PDF#A large and eye-friendly display, a powerful processor combined with 4GB of RAM and dual touch controls are optimal tools for reading PDF and DjVu files. This model will be the ideal choice for those who have to read educational or technical literature, for musicians and programmers. In order to keep power usage optimal it is highly recommended to remove or disable all code preventing Android from entering Idle mode.ONYX BOOX MAX Lumi is a top-end e-reader with a huge 13.3-inch E Ink Mobius Carta screen with MoonLight 2 and protective glass. E-reader screen does not require any power to keep it’s current state, so this problem does not exist at all. This is undesired behaviour, so Idle mode is often being disabled in reader app. Devices using standard LCD screens tend to dim or power down screen when entering Idle mode. The significant difference between reading apps designed to be used on smartphone/tablet and e-reader is how the Idle mode is handled. As result extensive WiFi usage may reduce weeks of battery lifetime to merely days. During WiFi data transfer inkBOOK power usage might increase several times above normal battery consumption. In order to keep power usage optimal all background data processing should be limited to absolute minimum to avoid high CPU loads and allow system to enter Idle state as often as possible.Īdditionally WiFi connectivity should never be used for extended period of time and especially it’s not recommended to keep WiFi connection up artificially (WiFi automatically powers down after few minutes of inactivity). Power management features Background synchronization If some of graphic are blurry, we recommend to prepare them in exact required resolution in order to avoid software scaling down or scaling up. #INKBOOK LARGE SCREEN VERIFICATION#It is highly recommended to perform visual verification of all non-SVG UI elements and icons prior to application release. In order to keep clean and sleek user interface we recommend using high contrasting colour scheme: Usageīecause of nature of E Ink screen sometimes scaled images might appear more blurry than the same images used as tablet/smartphone UI elements. #INKBOOK LARGE SCREEN HOW TO#The view and information of how to use it can be found:ĭue to nature of E Ink screen all colours are mapped to 16-level grayscale. We have made available custom paging recycler view, that can be used to replace Android RecyclerView. It is highly recommended to use list pagination instead of scrolling as often as possible. #INKBOOK LARGE SCREEN FULL#Interfaces and content with reduced grayscale does not look well, looses all of details and changing screen mode requires full screen refresh each time, which results in unpleasant screen flickering. In order to display scroll animation properly screen needs to change display mode form 16-level grayscale to black and white only or 4-level grayscale and then go back to 16-level grayscale again when animation ends. However using scrolled lists in interface and especially scrolled content in activity windows is not recommended. InkBOOK Android system is customised for E Ink and can handle scroll events animation effects. This may lead to unpleasant screen flickering, random erratic screen refreshments or at least odd behaviour of interface components. Rich animated interface will not be displayed properly in E Ink environment. Animation effectsĪll pageturn and other animation effects should be removed. It is highly recommended to follow guidelines form Recommended colour range section. When graphic is scaled to 16-level grayscale this may lead to unreadable text sections or even in most drastic scenarios to displaying black text on black background. User Interface simplifications Widget backgroundĭark backgrounds and colorful gradients should be avoided. This document gathers all information useful for adopting Android applications to be used on inkBOOK E Ink devices. InkBOOK software adaptation guide Powered by Preface
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