Control of a computer through a position-sensed stylus

CAFC
  • US 5,347,295 A
  • Filed: 10/31/1990
  • Issued: 09/13/1994
  • Est. Priority Date: 10/31/1990
  • Status: Expired due to Term
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First Claim
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1. An apparatus for controlling a computer system, the computer system comprising a screen for displaying information and a stylus having a tip for inputting information into the computer, including:

  • first detecting means coupled to said computer for detecting a stroke of the stylus tip in contact with the screen;

    second detecting means coupled to said computer for detecting a departure of the stylus tip from the screen;

    means coupled to said computer for defining termination of a gesture comprising at least one stroke in response to said departure of the stylus tip;

    means coupled to said computer for recognizing a plurality of said gestures, said recognizing means including means for comparing each said gesture to at least one predefined shape;

    means coupled to said computer for implementing each said recognized gesture, said implementing means including means for performing a predetermined action associated with each said predefined shape, said predetermined action being determined by the context in which said gesture was used, including a first context in which said action is executed upon an operating system level object and a second context in which said action is executed upon an application level object.

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