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Digital book

  • US 8,654,082 B2
  • Filed: 09/21/1998
  • Issued: 02/18/2014
  • Est. Priority Date: 09/19/1997
  • Status: Expired due to Fees
First Claim
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1. 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 at least one said operating element is adapted to actuate, on selection in an initial state, a specific first functionality, and, immediately after actuating the first functionality, is automatically re-programmed to be adapted to actuate, in a next state, a selected second functionality;

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

    wherein at least a portion of the display screen within the manipulation region includes a touch-sensitive touchscreen;

    wherein at least a border zone of the display screen includes the touch-sensitive touchscreen, andwherein at least one of a screen corner region and a region in the middle of the border zone is actuatable for initiating specific functions.

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