Technology, functions and properties of mobile output devices

Different device concepts exist to facilitate the reading of digital books. The Apple iPad or Amazon Kindle are some of the well-known representatives. What are the criteria that can be used for classifying the various concepts? What differentiates them from one another? And what technology is suitable for enabling the reader to understand extensive documents correctly, as in the case of technical documentation, for instance?

Text by Siegfried Siegel

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Technology, functions and properties of mobile output devices

Not all devices that are capable of rendering the so-called e-books fulfil all requirements for comfortable reading. Currently, there are two types of devices:

  • "Classic" e-book reading devices, which are designed primarily for reading e-books.
  • Multifunction devices, which can also represent and manage e-books, and also fulfil a whole range of additional functions.

"Classic" e-book readers

Reading devices that use so-called electronic paper are termed classic e-book readers – E-Ink. The Kindle reader from Amazon and the PRS-505 from Sony were the first devices which were widely used, among elsewhere in the German market. The advantage of the devices lies in the low power consumption and in the flicker-free screen representation. The text can be read well even under sunlight. The contents of course can be represented only in black and white, or in a few shades of grey. Hence, color ...