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Sport ball athletic activity monitoring methods and systems

  • US 10,369,411 B2
  • Filed: 01/13/2016
  • Issued: 08/06/2019
  • Est. Priority Date: 04/13/2012
  • Status: Active Grant
First Claim
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1. A method for determining a speed of a ball used for an athletic activity, the method comprising:

  • sensing acceleration data, using a sensor module coupled to the ball;

    determining a drag force applied to the ball, based on the acceleration data;

    comparing the drag force with a drag profile that expresses drag as a function of ball speed, wherein the drag profile is based on experimental data; and

    determining the speed of the ball based on the comparison.

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