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Motion detection for sensors sensitive to motion induced noise

  • US 7,725,187 B1
  • Filed: 11/06/2006
  • Issued: 05/25/2010
  • Est. Priority Date: 11/06/2006
  • Status: Expired due to Fees
First Claim
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1. In an implantable system, a method for estimating a level of noise in a signal produced by an implantable sensor that is sensitive to motion induced noise, the method comprising:

  • (a) obtaining sample data representative of a window of the signal produced by the implantable sensor that is sensitive to motion induced noise, the sample data including a plurality of samples each having a magnitude;

    (b) assigning each of at least some of the samples to one of a plurality of bins based on the magnitude of the sample, wherein each bin corresponds to a different range of magnitudes; and

    (c) estimating a level of motion induced noise in the sensor signal based on a distribution of the samples to the bins, wherein the level of motion induced noise comprises a level of motion artifacts.

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