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User interface systems and methods for manipulating and viewing digital documents

DC CAFC
  • US 7,450,114 B2
  • Filed: 04/16/2001
  • Issued: 11/11/2008
  • Est. Priority Date: 04/14/2000
  • Status: Expired due to Term
First Claim
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1. A computer device having a system for simulating tactile control over a document, comprisinga processor, memory, and a touch-sensitive display,system code stored within the memory and adapted to be executed by the processor to provide a digital representation of a document including data content and a page structure representative of a page layout of the document,an engine for rendering an image of at least a portion of the page layout of the digital representation on the touch-sensitive display,a display monitor in communication with the touch-sensitive display screen for detecting motion of a pointer across the touch-sensitive display,a velocity detector for determining a velocity vector based on a velocity of the detected motion,an interface process in communication with the display monitor for processing the motion detected by the display monitor to detect one of a plurality of commands, wherein the plurality of commands includes a pan command,wherein, in response to the command detected by the interface process being the pan command, the engine pans the displayed document on the display at a rate based on the determined velocity vector.

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