Method and apparatus for accelerated scrolling

  • US 8,952,886 B2
  • Filed: 12/19/2007
  • Issued: 02/10/2015
  • Est. Priority Date: 10/22/2001
  • Status: Active Grant
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First Claim
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1. A method comprising:

  • at an electronic device with a display and a rotational input device;

    displaying a user interface with a navigable region;

    while displaying the user interface with the navigable region, detecting a first input with the rotational input device;

    in response to detecting the first input;

    determining whether the first input meets navigation acceleration criteria;

    in accordance with a determination that the first input meets the navigation acceleration criteria, navigating through the navigable region based on a magnitude of a characteristic of the first input as modified by an acceleration factor; and

    in accordance with a determination that the first input does not meet the navigation acceleration criteria, navigating through the navigable region based on the magnitude of the characteristic of the first input without modification by the acceleration factor;

    after navigating through at least a portion of the navigable region, ceasing to detect the first input;

    after ceasing to detect the first input, detecting a second input with the rotational input device; and

    in response to detecting the second input;

    determining whether a predetermined amount of time elapsed between detecting the first input and detecting the second input;

    in accordance with a determination that less than the predetermined amount of time elapsed between detecting the first input and detecting the second input, navigating through the navigable region based on a magnitude of a characteristic of the first input as modified by the acceleration factor; and

    in accordance with a determination that more than the predetermined amount of time elapsed between detecting the first input and detecting the second input, navigating through the navigable region based on the magnitude of the characteristic of the second input without modification by the acceleration factor.

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