Touch-screen image scrolling system and method

CAFC
  • US 6,690,387 B2
  • Filed: 12/28/2001
  • Issued: 02/10/2004
  • Est. Priority Date: 12/28/2001
  • Status: Active Grant
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First Claim
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1. An improved touch-screen image scrolling system, comprising:

  • an electronic image display screen;

    a microprocessor coupled to said display screen to display information thereon and to receive interactive signals therefrom;

    timer means associated with said microprocessor to provide timing capacity therefor;

    a source of scroll format data capable of display on said display screen;

    a keyboard coupled to said microprocessor to provide input control signals thereto;

    finger touch program instructions associated with said microprocessor for sensing the speed, direction and time duration of a finger touch contact with said display screen;

    scrolling motion program instructions associated with said microprocessor responsive to said duration of said finger touch contact such that, when said duration exceeds a first given preset minimum time and is accompanied by motion along the surface of said screen followed by separation of said finger touch from said screen, a scroll format display on said screen is caused to begin to scroll in said sensed direction and at said sensed initial speed;

    time decay program instructions associated with said microprocessor for reducing the rate of scrolling displacement on said display screen at a given rate until motion is terminated;

    stopping motion program instructions associated with said microprocessor for terminating scrolling displacement of the image on said screen upon first occurrence of any signal in the group of signals comprising;

    (a) a substantially stationary finger touch on the screen enduring for a period longer than a preset minimum time, and (b) an end-of-scroll signal received from said scroll format data source.

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