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Accelerated data navigation

  • US 7,268,768 B2
  • Filed: 10/24/2005
  • Issued: 09/11/2007
  • Est. Priority Date: 02/26/2001
  • Status: Expired due to Fees
First Claim
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1. A system for controlling navigation of a data file, comprising:

  • an input device having a user-actuated rotational input mechanism for generating signals representative of input events; and

    memory storing computer readable instructions that perform a method of accelerating scrolling, said method comprising steps of;

    detecting a rate of user actuation of said mechanism, wherein said rate of user actuation comprises a rotational speed of said rotational member;

    determining a data file navigation rate representing a navigation amount per input event as an increasing exponential function of the detected rate of user actuation;

    detecting a direction of rotation of the rotational member, and when the direction of rotation of the rotational member changes, fixing the scroll rate at a default value for a predetermined amount of time; and

    outputting control signals indicative of said navigation rate.

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