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Digital Book

  • US 20120098752A1
  • Filed: 09/21/1998
  • Published: 04/26/2012
  • Est. Priority Date: 09/19/1997
  • Status: Active Grant
First Claim
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212. A mobile display device, in particular for displaying text and image information, comprising:

  • a casing having a planar display unit with at least one planar display screen disposed on a first side of the casing;

    at least one manipulation region for operation by a user, said manipulation region being provided at a border zone of the display unit in such a way that the user can perform operating actions with one or more fingers of one hand; and

    at least one actuatable operating element that is arranged within the manipulation region on a second side of the casing that faces in a direction different than the first side, wherein actuation of the at least one operating element individually or in combination initiates at least one of leafing-through functions to navigate document content displayed on the display screen, scrolling functions to navigate document content displayed on the display screen, and providing functions for selection menus;

    wherein specific operating elements are allocated, in an initial state, to a specific first functionality, wherein said specific operating elements, immediately after triggering a providing function for a selection menu, are automatically re-programmed to trigger, in a selection state, a selection function within the provided selection menu;

    wherein the first side of the casing is a front side and the second side of the casing is a rear side.

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