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Accelerated data navigation

  • US 6,989,819 B2
  • Filed: 03/31/2004
  • Issued: 01/24/2006
  • 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, wherein said user-actuated rotational input mechanism comprises a rotational memberdetection means for detecting a rate of user actuation of said mechanism, wherein said rate of user actuation comprises a rotational speed of said rotational member;

    determination means for 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; and

    output means for outputting control signals indicative of said navigation rate,wherein the system is adapted to monitor a direction of rotational member, and when the direction of rotation of the rotational member changes the scroll rate is fixed at a default value for a predetermined amount of time.

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