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Methods and devices for removing unintentional movement in free space pointing devices

  • US 20060028446A1
  • Filed: 05/02/2005
  • Published: 02/09/2006
  • Est. Priority Date: 04/30/2004
  • Status: Active Grant
First Claim
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1. A handheld, pointing device comprising:

  • a first rotational sensor for determining rotation of said pointing device about a first axis and generating a first rotational output associated therewith;

    a second rotational sensor for determining rotation of said pointing device about a second axis and generating a second rotational output associated therewith;

    an accelerometer for determining an acceleration of said pointing device and outputting an acceleration output associated therewith; and

    a processing unit for receiving said first and second rotational outputs and said acceleration output and for;

    (a) detecting a user-initiated event;

    (b) determining a velocity of said handheld pointing device based upon at least one of said first and second rotational outputs and said acceleration output;

    (c) if said velocity of said handheld device is below a predetermined velocity threshold, then discarding or attenuating data generated by said first rotational sensor, said second rotational sensor and said accelerometer until either said handheld device has moved more than a predetermined distance or a predetermined time has expired; and

    (d) otherwise, if said velocity of said handheld pointing device is above said predetermined velocity threshold, then filtering said data generated by said first rotational sensor, said second rotational sensor and said accelerometer to remove unintended motion associated with said user-initiated event.

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