Object position detector with edge motion feature and gesture recognition

  • US 5,880,411 A
  • Filed: 03/28/1996
  • Issued: 03/09/1999
  • Est. Priority Date: 06/08/1992
  • Status: Expired due to Term
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First Claim
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1. A method for recognizing an extended drag gesture made on a touch-sensor pad in a touch-sensing system providing X and Y position information to a host, including the steps of:

  • detecting a first presence of a conductive object on the touch-sensor pad of a first duration between a start and a finish of said first presence;

    comparing said first duration with a first reference amount of time;

    initiating a gesture signal to the host indicating the occurrence of a gesture if said first duration is less than said first reference amount of time;

    detecting a second presence of a conductive object on the touch-sensor pad of a second duration between a start and a finish of said second presence;

    comparing a first elapsed time between said finish of said first presence and said start of said second presence with a second reference amount of time;

    maintaining said gesture signal and repeatedly sending X and Y position information to said host for said second duration if said first elapsed time is less than said second reference amount of time;

    detecting a third presence of a conductive object on the touch-sensor pad of a third duration between a start and a finish of said third presence;

    comparing a second elapsed time between said finish of said second presence and said start of said third presence with a third reference amount of time; and

    maintaining said gesture signal and repeatedly sending X and Y position information to said host for said second elapsed time and said third duration if said second elapsed time is less than said third reference amount of time.

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