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LOCATION DETERMINING SYSTEM

  • US 20110022357A1
  • Filed: 10/04/2010
  • Published: 01/27/2011
  • Est. Priority Date: 11/21/1994
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a presentation device; and

    a processor configured to at least;

    detect contact with ground based upon movement over the ground;

    determine a first vertical drop based upon the movement over the ground during at least one time interval in which lack of contact with the ground is detected followed by the detection of the contact with the ground;

    compare the first vertical drop to a second vertical drop; and

    cause the presentation device to present the comparison.

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